tangedco dcdr spec vol ii tech

TAMILNADU GENERATION AND DISTRIBUTION CORPORATION LIMITED

SPECN.NO.CE/IT/SE/CPB/EE/ITCELL/DC&DR/CC-71/2010-11 of 158

Volume-II

Technical Specification



Section-I

Design and Layout of Data Centre



1.1 Layout of the Data Centre

1.2 Data Centre Layout Details:

Sl.No. Layout Details Area in Sq.Ft.

1 Server Room 966

2 NOC Room 188

3 Network Room 169

4 MUX Room 98

5 PAC Room 267

6 Staging Room 170

7 BMS Room 90

8 UPS Room-1 188

9 UPS Room-2 219

10 Spares Room 77

11 Media Storage Room 77

12 Manager Room 90

13 Meeting Hall 90

14 Reception Passage Area

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1.2.1 Server Room:

The server room area of 966 sq.ft. is proposed to accommodate 30 server Racks in Three rows with Tier-III Architecture and electric power consumption per fully loaded Rack 5 KVA.

1.2.2 NOC Room

This room with an area of approx. 188 sq.ft. will have all the necessary arrangements for the Database, Systems, Application and other Server Administrators. Per shift it is expected to employ one administrator for each of the categories.

Data Centre shift operators taking care of daily operational activities of Data Centre will use this area. There will be one Data Center In charge per shift sitting in this area along with shift operators (one each for specific activities like backup, daily Data Center administration / operations etc.)

1.2.3 Network Room

This room with 169 sq.ft. shall consist 3 Nos. Network Rack of all the back bone cables and Networking Cables along with the Public Address system.

1.2.4 MUX Room

This room with 98 Sq.ft with 3 Nos. Rack shall consist of service providers WAN and communication Equipment.

1.2.5 PAC Room

This room with 267 Sq.ft. shall accommodate the PAC units which cater to the main critical Server Room area.

1.2.6 Staging Room

This Room with area of 170 Sq.ft. shall be used to install and configure the new servers and to rectify the defective Servers and components.

1.2.7 BMS Room

This Room with area of 90 Sq.ft shall house all the panels for the BMS components including Closed Circuit Television, Fire Detection & Suppression System, Access Control, Fire Alarm, VESDA, etc.



1.2.8 UPS Room (UPS Room – I & UPS Room – II)

This Room with area of 188 Sq.ft. & 219 Sq.Ft shall house all the Un-Interrupted Power Supply Units, Batteries, Main Power Distribution Units (PDU) and Sub Distribution Units to feed the components such as PAC, UPS, lighting, fixtures etc.

1.2.9 Spares Room

This Room with area of 77 Sq.ft. will be used for storing the spares for Server and other components.

1.2.10 Media Storage Room

This Room with area of 77 sq.ft. will be used for storing all backed up Digital Linear Tapes (DLT). This area will house a fireproof cabinet for storing roughly 300 tapes.

1.2.11 Manager Room

This room with area of 9 0 sq.ft. shall be used by the Manager Incharge of the Data Centre.

1.2.12 Meeting Hall

This room with approx. 90 sq.ft. shall be used by the Manager to discuss the migration of the applications etc. of the user departments and also for day-to-day operations and maintenance of the Data Centre.

1.2.13 Reception

The reception area will be the passage area sq.ft. shall be used for the external visitors to the State Data Centre.

1.3.0 CUSTOMER CARE CENTRE

The Customer Care Centre area will be 1000 Sq.ft. at first floor of the Data Centre

building at Chennai. No Customer Care Centre has been proposed at DR site at

Madurai. The infrastructure like Electrical works including earthing, Civil and Interior

works, Air conditioning system, Fire Detection and protection system, Access Control

System, Public Address system and Telephone lines with pilot number, Furniture etc.

The quantity of items may be added with Data Centre while quoting as per price

schedule given in the volume-I.



Section-II

Physical Infrastructure



2.1 Specifications for Data Centre Design & Implementation:

This section details the technical specifications, mandatory compliance of the Implementation Agency (IA) to these specifications in implementation of TNEB‘s Data Centre, Customer Care Centre and Disaster Recovery Centre. The Data Centre Building is G+3 Floors with approximate space for Data Center is about 3150 Sq.ft in the ground floor of the building and 1000 Sq.ft. for Customer Care Centre at First Floor of the same Data Centre building. The proposed Data Centre and Disaster Recovery Centre for TNEB shall be a Tier-III Data Centre based on TIA-942 guidelines.

The basic Data Centre guidelines have been provided in this section of this tender. The tenderers can use the same as the basis while proposing their Technical Design of the Data Centre / Disaster Recovery Centre. However the vendor shall also provide the cost of data center preparation per Sq.ft in the commercial bid.

The physical infrastructure work consists of the following;

1. Civil work 2. Electrical Work 3. Precision Air Conditioning 4. Comfort Air Conditioning 5. Water Leakage Detection System 6. Rodent Control System 7. Access Control System 8. CCTV 9. Public Address System 10. Fire / Smoke Detection and suppression System 11. Diesel Generator Set 12. Building Management System

RFP for



2.2 Civil Works :

The scope for civil work in this RFP is to furnish the data center area in all aspects. The furnishing includes but not limited to the following:

1. Fire rated Insulation on existing brick wall

2. False flooring

3. False Ceiling

4. Fire rated Glass partition

5. Normal Glass Partition

6. Gypsum partition

7. Tiled Flooring

8. PoP

9. Painting

10. Door

11. Furniture

12. Ramp

The selected bidder should adhere to the following civil and interior specifications:

2.2.1 Fire rated Insulation on existing brick wall:

Providing and Fixing Fire rated of 9mm thick on existing brick wall using 25mm GI channels on walls, to achieve a 2 hour fire rating of the entire system. All vertical and horizontal channels to be clad with 100mm wide cover strips of same board material, and all perimeter gaps to be filled with fire resistant acrylic sealant. Complete installation as per manufacturer's specifications. Providing and applying Fire Retardant paint of approved make and shade as per Manufacturer's specifications and as directed.

2.2.2 False flooring:

Providing and fixing Cavity floor systems of approved make as per site requirement and as per the following specifications.

System: Access floor system to be installed shall provide a maximum finished floor height of 600mm from the existing floor level. The system shall provide for suitable pedestal and under-structure designed to withstand various static loads and rolling loads subjected to it in an office / server / DCS / panel / rack area. The entire Access floor system shall provide for adequate fire resistance, acoustic barrier and air leakage resistance.

Panels: Panels shall be made from steel. The panel shall be of 600 X 600 mm in size

with bottom pan embossed of 49 hemispherical and 36 reverse cones with overall thickness of 35mm to give strength and flexural rigidity. The top



sheet shall be plain and resistant welded at various locations after the top and bottom sheets have been degreased and phosphated. The above hollow panel shall have an infill of light weight cementitious material. The entire panel shall be coated with epoxy coating on the exposed surface.

Panels shall remain flat through and stable unaffected by humidity or fluctuation in temperature throughout its normal working life.

Panels shall provide for impact resistance top surfaces minimal deflection, corrosion resistance properties and shall not be combustible or aid surface spread of flame.

Panels shall be insulated against heat and noise transfer. Panels shall be 600 x 600mm fully interchangeable with each other within the range of a specified layout. Panels shall rest on the grid formed by the stringers which are bolted on to the pedestals. Panels shall be finished with 1mm fire retardant floor grade anti-static Laminate/ ESD Laminate-PVC/ Condutive/ Dissipative PVC on a Semi-Automated lamination to ensure maximum bonding to the steel structure of approved colour and PVC beading / trimming along the edges. The panel should be designed for a concentrated point load of 675 kgs and a uniformly distributed load (UDL) of 2025 kg/sq.m. The maximum permissible deflection should not exceed 2mm.

Perforated panel, Grating panel, Vision panel, kold Lok, Grommet of required size etc. shall be provided where ever necessary. Special two cup suction panel lifting tool shall be provided for heavy load carrying capacities.

Pedestals : Pedestal installed to support the panel shall be suitable to achieve a finished floor height of 150mm to a maximum of 600mm from the existing floor level. Pedestal design shall confirm speedy assembly and removal for relocation and maintenance. Pedestal base to be permanently secured to position on the subfloor. Pedestal assembly shall provide for easy adjustment of leveling and accurately align panels to ensure lateral restrain. Pedestals shall support an axial load of 2200 Kgs, without permanent deflection and an ultimate load of 3500 Kgs. Pedestal head shall be designed to avoid any rattle or squeaks.

Pedestal Assembly: The pedestal head assembly shall consist of 75 x 75 x 3.50mm thick galvanized epoxy polyester coated MS Base plate die-pressed orbitally riveted to a 100 mm. long 19 mm dia rolled formed stud and check nuts for level adjustment and arresting vertical movement. The pedestal head shall consist of an anti-vibrational PVC cap for panel location. The pedestal base assembly shall consist of 22 mm OD pipe mechanically locked on a press for perpendicularity and then welded to a base plate of 100 x 100 x 2 mm thick stiffening rods. The sub-structure assembly shall be suitably anchored to the floor with suitable adhesive or fastener as recommended by the manufacturer. All the components shall be zinc electro plated.



Understructure: Understructure (US) system consists of stringers of size 21 X 32 X

1.2 X 570 to form a grid of 600 x 600mm. These stringers are locked into the pedestal head and run both ways. The US system shall provide adequate solid, rigid and quiet support for access floor panels. The US system shall provide a minimum clear, uninterrupted height of 550 mm between the bottom of the floor and bottom of the access floor for electrical conduiting and wiring.

Stringers: Stringer system is hot dipped galvanized steel cold rolled specially

designed with ribs embossed on 3 sides for strength, lateral stability, and for enhanced rolling loads performance and to support the panels on all four sides for alignment. The stringer to have a counter sunk holes at both ends for securing the stringers on to the pedestal head ensuring maximum lateral stability in all directions. The grid formed by the pedestal and stringer assembly shall receive the floor panel. The stringer shall be 21 x 32 x 1.2mm length.

Providing Class-'0' 19mm thick Nitrile rubber of approved make as a subfloor insulation fixed with approved non-formaldehyde based adhesive to the entire area of existing floor (Below false flooring) as per manufacturer's specification.

Rate shall include preparation of surface, wastages, lead & lift, grouting the system with anchor fastener, removing all debris from the premises etc.

Rate shall be inclusive of providing ramp and landing in the entry, finished with the antistatic laminate panel.

2.2.3 False Ceiling

Metal False Ceiling (Plain, Reflective & Perforated)

Description Requirement

Specifications for Metal Ceiling

In general all materials used should conform to the latest international or equivalent Indian standards.

Size 600 X 600 mm

Thickness 0.5 mm

Weight 3.10 kg/m

Density of insulating material

45 kg/cum.

Tensile Strength 185 to 230 Mpa

0.2% yield strength 150 Mpa min.



Elongation 2% min. on 50mm guage length

Bending There shall be no cracking

Sound Absorption 0.6 (with Acoustic pad)

Fire resistance Shall be as per BS 476. Fire resistance shall be for about 80 minutes.

Perforation 2mm

Light reflectance 85%

The false ceiling shall have 1‘6‖ of space from the actual roof ceiling.

Materials

Metal tiles, planks, strips for false ceiling:

Metal false ceiling shall be in the form of tiles, planks or strips as required. Metal tiles, planks, strips shall be made out of GI of thickness as per the specific requirements. The tile / strip ends will be raised with pips and stops to ensure positive engagement into the spring to enable de-mounting of individual panels. All tiles will be bevelled edged, and all tiles/strips shall be 35 micron pure polyester powder coated to approved shade. Tiles/strips shall be clipped into clip in profile of 0.5 mm thick G.I. The clip in profile shall be supported from slab by means of rigid suspension system. All tiles shall be square edged. Metal reflective ceiling shall be installed in selected locations as required using metal panels having reflective effect.

For perforated ceilings, the pattern of perforations shall be based on the acoustic

calculations so as to ensure required sound dampness.

Acoustic felt:

In case of perforated ceiling, non-woven felt pad made of glass reinforced fibre shall be wrapped in polyethylene bags over the perforation for sound absorption as per

acoustic requirements.

Framework:

Primary suspension

Rows of galvanised steel common profiles shall be installed on specified centre to centre distance by means of rod hangers fixed to the upper structure at an appropriate distance. Primary suspension profiles will be fixed at both ends to prevent

upward movement.

Secondary suspension

Clip in profiles as described above shall be fastened to the primary suspension by

means of rail connectors at the correct distance to support the tiles.



Testing

The false ceiling system installed shall be tested for straightness and levels. The panels shall be true to shape and size as specified and shall be from any bends, scratches or visible marks, patches etc. The framework should be carefully examined for rigidity. If there is any unevenness, the panels should be dismantled and re-

erected complete to the satisfaction of the Employer‘s Representative.

Workmanship

The ceiling shall be erected in a continuous sequence. All hardware shall be in G.I. If the ceiling is to be constructed in a curved shape, the same shall be done true to profile as shown in the drawings complete to the satisfaction of the Employer‘s Representative. The Contractor shall make adequate provisions for supports for lighting fittings, making cut-outs and extra framework for light fixtures, A.C. grills, speakers, sprinklers, trap doors, sensors, all detectors, cameras light fittings, etc., complete all as per lay-out / pattern as per design.

Protection

The Contractor shall be responsible for providing adequate protection of finished work.

Rate shall include necessary wastage, clips, GI screws, etc. complete. Rate to include making necessary cut-outs or opening for light fixture etc, complete. The rate inclusive of labour & material all complete. For false ceiling work, the measurement shall be for the actual area covered. No deductions will be made for the cutouts, for light fittings, speakers, column up to 5.00 Sq.ft. / 0.5 Sq.M. Horizontal Area will only be measured for payment.

2.2.4 Partition works:

2.2.4.1 Gypsum partitioning:

Providing and fixing in position of 75 mm thick Gypboard partition using 12.5 mm thick gyp-board single skin on both sides with G.I steel metal stud frame of size 48 mm thick using floor and ceiling channels of 50 mm thick i.e. 0.55 mm thick and having equal flanges of 36 mm with GI stud 48 mm width ie. 0.55 mm thick and having one flange of 6 mm placed @ every 600 mm c/c in vertical direction up to ceiling and the ends should be crimped / screwed rigidly at top and bottom etc. complete. Rate shall include to stiffen the partition horizontally with GI fixing channel of 0.99 mm thick, 99 x 2440 mm long size and screw it on either side of the G.I frame etc. and also ensure that the stud frame at the top level of the joinery opening with joints staggered to avoid continuous joints etc. Fixing of channels shall also provide for suitable attachment of fixtures to the partitions and the perimeter opening should be trimmed with G.I metal studs packed with best quality



treated Malaysian Sal wood to required size and shape with 2 coats of fire proof paint over a coat of anti-termite treatment / anti-corrosive primer to receive screws /anchor fasteners to fix Joinery frame in position etc. complete. Rate shall include Gypboard on both sides of the frame work vertically spanning from floor to ceiling fixed with dry wall screws to a suitable diameter and length at every 300 mm c/c. The screws should be of zinc chromium plated, self drilling etc. The joints between the gyp-boards shall be finished flush and even with jointing compound and paper tape and the surface shall be painted with 2 coats of plastic emulsion paint of approved make and shade over a coat of primer suitable for gyp-board after E-Mix / P.O.P / Gypsum putty and allas per manufacturer‘s specification etc complete and all as directed. Rate shall include necessary arrangement to ensure proper anchorage / fixing from the ceiling to get sufficient rigidity (to the required level).

Rate shall include fixing of 100 mm high recessed skirting made out of 12mm tk. Comm. Ply and finished with 1mm laminate of approved shade.

2.2.4.2 Glazed partitioning:

Type-I: Providing and fixing glazed partitions of 10mm thick toughened glass using Stainless Steel Patch fittings. Rate shall include for transport charges, handling, loading and unloading,

installation of glass and clear sealant between butt joints and perimeter on all sides.

Type-II: Providing and fixing running glazing for Vision panel of 10mm thick clear glass within the partitions. 12mm thick MDF beading finished with paint of approved shade shall be used to fix the glass. Care shall be taken to paint the inner faces of the MDF beading before

fixing the glass.

Rate shall include for transport charges, handling, loading and unloading, installation of glass and clear sealant between butt joints and perimeter on all sides. 2.2.4.3 Fire rated partitioning:

2.2.4.3.1 Fire rated panel partition: Providing and Fixing partition with Fire rated board of 9mm thick on both sides using GI channels as per above specifications, with 50mm thick Rockwool insulation filling of 96 kg/cu.m density, to achieve a 2 hour fire rating of the entire system. All vertical and horizontal channels to be clad with 100mm wide cover strips of same board material, and all perimeter gaps to be filled with fire resistant acrylic sealant. Complete installation as per manufacturer's specifications.

2.2.4.3.2 Fire rated Glazed partition:

Providing and fixing of Fire Rated Glass partition with 10mm thick Glass and framed with fire retardant MDF beading finished with fire retardant paint of approved shade, to achieve 2 Hrs.

fire rating of the entire system.



2.2.4.3.3 Fire rated Wall paneling:

Providing and Fixing Fire rated panel of 9mm thick on existing brick wall using 25mm GI channels on walls as per above specifications, to achieve a 2 hour fire rating of the entire system. All vertical and horizontal channels to be clad with 100mm wide cover strips of same board material, and all perimeter gaps to be filled with fire resistant acrylic sealant. Complete installation as per manufacturer's specifications.

2.2.5 DOORS: 2.2.5.1 Glass Door: Providing and Fixing Style-less Glass Doors with Patch fittings made of 12mm thick toughened glass. Rate shall include all necessary hardware such as heavy duty floor spring, top pivot, floor-recessed locking arrangement, 450mm high S.S door handle of approved makes & sample, etc complete.

a) Single Door of size

b) Double Door of size 2.2.5.2 Flush Door with Vision panel: Providing and fixing 35 mm thick Flush Door shutters with 1.5mm tk. laminate finish single leaf of solid core of block board type bonded with phenol formaldehyde synthetic resin thermo pressed with 8 mm thick teak wood external lipping. The construction procedure of the shutter should be as per IS 2202. The shutter shall be shop prepared for taking mortice lock or latches suitable lock block of wood may be provided for fixing the hardware. The size of block, shall perfectly correspond to the maximum size of lock, covered in IS 2209. All the four edges of the door shutter shall be square. The shutter shall be free from twist or warp in its plane and of required size etc. Complete as directed. Rate to include providing and fixing necessary lever handle with mortise lock, door closers, ball bearing hinges all of approved make. Rate also to include 200 x 600mm glass vision panel of 6mm thick with suitable wooden beading duly polished / painted.

a) Single Door of size 2.2.5.3 Fire Rated Doors: 2.2.5.3.1 Fire Rated Metal Door: Providing and fixing of 2-hour rated Hollow metal fire door with Vision Panel of fully flush type of 46 mm thick, Pressed Galvanised steel Double leaf Guardian of approved make, which consists of frame, shutter, infill and finish as detailed below and conforming to IS:277



Door frame shall be double rebate profile of size 143 x 57 mm with bending radius of 1.4 mm having 1.6 mm thick galvanised steel sheet (16 gauge ) with steel door shutter of 46 mm thick fully flush, double skin door shall manufactured from 1.25 mm thick galvanised steel sheet (18 gauge).The infill material shall be resin bonded honey comb paper with thermal insulation. Door frames and shutter shall be finished with etched primer coating, stored zinc phosphate primer and thermosetting synthetic enamel paint (35 micron DFT) of approved colour. The rate shall include for supply and fixing of 3 mm thick base plates, all joints of frames with provision for anchor bolt fixing to wall / partition / RC surface, reinforcement pad for fixing of door closers of approved make, factory finish pre-punched cut outs to receive hardware and iron mongery, 3mm thick hinge plates predrilled to receive hinges for screw mounted fixing, stainless steel double bearing butt hinges of size 102 x 89 x 3 mm thick, mortice sash lock with 5 pin tubular brass cylinder 70 mm thick with internal thumb / knob operation and external key provision with knob, brass / nickel lever handles and heavy duty automatic door closer of approved make. Rate shall also include for grouting the frame with cement slurry including providing necessary Elastic fire stop Sealant at the Joints between Wall & Frame to the required thickness and to be applied by using Dispensor tool CS 201 P1as per manufacture's specification etc complete and as directed. Rate shall be inclusive of providing and fixing Vision Panel of size 200 x 300mm of approved make fire rated glass of required thickness. Rate shall be inclusive of making cut-outs, provisions, etc for receiving Access Control provision.

a) Single Door FD1 of size 1200 x 2400 mm with Panic Bar

b) Double Door FD2 of size 1500 x 2250 mm. Rate shall include providing and fixing of plywood framework below Cavity floor to receive the Door floor spring, other hardware, etc. The plywood framework shall be properly anchored from the existing floor to ensure proper rigidity and avoid vibration during door movement. The plywood shall be finished with 2 coats of fire proof paint over a coat of anti-termite treatment / anti-corrosive primer to receive screws / anchor fasteners to fix Joinery frame in position etc. complete.

c) Single Door FD3 of size 900 x 2100 mm.

d) Double Door FD4 of size 1800 x 2250 mm.Rate shall include providing and fixing of plywood framework below Cavity floor to receive the Door floor spring, other hardware, etc. The plywood framework shall be properly anchored from the existing floor to ensureproper rigidity and avoid vibration during door movement. The plywood shall be finishedwith 2 coats of fire proof paint over a coat of anti-termite treatment / anti-corrosiveprimer to receive screws / anchor fasteners to fix Joinery frame in position etc.complete.



e) Single Door FD5 of size 1200 x 2400 mm. f) Double Door FD6 of size 2400 x 2400 mm. g) Double Door FD7 of size 1500 x 2400 mm.

Providing and Fixing 2 hour fire rated fixed glass with frame of Promat or approved make. Rate shall include all hardware and assembly arrangements.

2.2.5.3.2 Fire Rated Glass Doors: Providing and fixing Fire Rated Glass Doors made up of 12 mm thick fire rated glass, the rate shall includes all necessary hardware such as heavy duty floor spring, top pivot, floor recessed locking arrangement, S.S door handle of approved makes and sample, etc. complete.

1. Double Door of size 2. Single Door of Size

2.2.6 Tiled Flooring:

Providing vitrified tile flooring and skirting for the area which are not provided with false flooring. The vitrified tiles shall be got approved by the TNEB. Size of tiles shall be 600mm x 600mm and 10mm thick.

2.2.7 Plaster of Paris work:

Providing and applying good quality of ISO branded Plaster of Paris throughout the internal brick wall surface. POP punning thickness should be 12mm & above across all the internal surface and finished to uniform smooth finish. 2.2.8 Painting work

2.2.8.1 Providing and applying Fire Retardant paint of approved make and shade as per Manufacturer's specifications and as directed

2.2.8.2 Providing and applying two coats of Plastic emulsion paint to existing brick walls

& RC Columns of approved colour over a coat of water based primer including preparation of surface by thorough cleaning and wetting and applying POP / Gypsum powder putty as per manufacturer‘s specification fully to give an even shade before painting and curing as per manufacturers specifications and as directed. Paint to be applied with roller.

2.2.9 CARPENTRY / FURNITURE WORKS: 2.2.9.1 Providing and fixing Filing storage unit in the BMS room, Staging room, Media &

storage room, Manager room, Meeting room etc. shall be made out of 19 mm thick commercial plywood on all sides. The storage unit shall include adjustable



intermediate shelves made of 19mm comm. Plywood placed on necessary S.S stud supports. The openable shutter shall be made out of 19mm thick comm. plywood with necessary teakwood supports etc complete. Rate shall include for providing teak wood moulding of size 40 x 15mm at top level etc. complete. All exposed surfaces shall be finished with 1mm thick laminate of approved shade and all inner / recessed surfaces shall be painted with sealer finish. Rate to include all hardware, tower bolt, magnetic catch, heavy duty hinges, S.S handles - of approved make, including locking arrangements with master key of approved make etc. complete.

2.2.9.2 Providing and fixing Desk of size 1200 x 600 x 750 mm height at reception, shall be made of 19 mm thick commercial plywood as table top, sides, front and rear side with adequate supports as directed in both horizontal and vertical directions. The table shall be provided with pencil drawer, drawer unit with openable shutters and one intermediate shelf with lock arrangement, etc. complete. All external surfaces shall be finished with 1 mm thick laminate of approved shade and the internal surfaces shall be of sealer finish.

2.2.9.3 Providing and Fixing the following MODULAR FURNITURE 2.2.9.3.1 Single-sided W/s row - size 1200 x 600mm, 60mm thick partition of height

1200mm; Data raceway at skirting level; Power raceway at below table-top level; 25mm thick laminate table-top with post-formed edges; individual 3-drawer mobile pedestal storage unit; Pin-up soft boards with approved colour felt cloth; Keyboard tray; CPU trolley; Gable end support.

2.2.9.3.2 Double-sided W/s row - size 1200 x 600mm, 60mm thick partition of height

1200mm; Data raceway at skirting level; Power raceway at below table-top level; 25mm thick laminate table-top with post-formed edges; individual 3-drawer mobile pedestal storage unit; Pin-up soft boards with approved colour felt cloth; Keyboard tray; CPU trolley; Gable end support.

2.2.9.3.3 Running Table-top counter in Staging area - 25mm thick countertop with

Laminate finish and Postformed edges with required intermediate Gable ends; 2 nos. of mobile 3- drawer pedestal storage unit.

2.2.9.3.4 Running Table-top counter in NOC room - 25mm thick countertop with laminate

finish and Postformed edges with required intermediate Gable ends; 3 nos. of mobile 3- drawer pedestal storage unit.

2.2.9.3.5 Running Table-top counter in BMS room - 25mm thick countertop with Laminate finish and Postformed edges with required intermediate Gable ends; 1 no. of mobile 3-drawer pedestal storage unit.

2.2.9.3.6 Meeting Table- Suitable size with 25mm thick countertop with Laminate finish

and Postformed edges; and 2 sets of required concealed Flip-top boxes for Electrical and Data outlets.



2.2.9.3.7 Manager Table- Suitable size with 25mm thick countertop with Laminate finish and Postformed edges.

2.2.9.3.8 Suitable rolling Chairs in BMS room, NOC room, Manager Room, Meeting Room, Staging room, Reception etc. shall be provided.

2.2.9.4 Furnishings:

2.2.9.4.1 Providing and fixing of vertical blinds of good quality wherever required in data

centre. Installation shall be complete in all respects.

2.2.9.4.2 Providing and fixing soft board panel of specified sizes having 12 mm thick soft board covered with felt fabric of approved make and shade of premium quality and cost of fabric not less than Rs. 150/- per Rm. The board shall have teakwood/cedar/beech/matching wooden beading, lipping around. The board shall be fixed on prepared surface with necessary hardware fittings etc. complete. All concealed wood works shall have sealer polish as directed. Rate quoted shall be for the complete finished work including all the materials and labour mentioned above.

2.3 Control Systems: The proposed Data Centre/ Disaster Recovery Centre shall have the following control systems adhering to the L1 BS 5839. The Control system includes the following:-

1 Access Control System 2 Closed Circuit Surveillance System (CCTV) 3 Intelligent Fire Alarm System 4 Gas based fire suppression system 5 Very Early Smoke Detection System 6 Water Leak Detection System 7 Rodent Repellent System 8 Public Address System

2.3.1.1 Access Control System (ACS): The proposed design shall be a minimum of 3 tier Access Security System coupled with dual factor authentication (bio-metric & smart card) for entering the high security zones – Server Room. The auxiliary areas will have 2-tier Access Security. The multipurpose smart cards are proposed for secured physical access & to record the daily attendance of individuals. The Access Control System shall be deployed with the objective of allowing entry and exit to and from the premises to authorized personnel only. The system deployed shall be based on Proximity as well as Biometric Technology for the critical areas and Proximity technology for noncritical areas. An access control system consisting of a central PC, intelligent controllers, proximity readers, power supplies, proximity cards and all associated accessories is required to make a fully operational on line access control system. Access control shall be provided for



doors. These doors shall be provided with electric locks, and shall operate on fail-safe principle. The lock shall remain unlocked in the event of a fire alarm or in the event of a power failure. The fire alarm supplier shall make potential free contacts available for releasing the locks in a fire condition especially for staircase and main doors. Entry to the restricted area shall be by showing a proximity card near the reader and exit shall be using a push button installed in the secure area. The system shall monitor the status of the doors through magnetic reed contacts. The system should be designed and implemented to provide following functionality:

• Controlled Entries to defined access points • Controlled exits from defined access points

• Controlled entries and exits for visitors

• Configurable system for user defined access policy for each access point

• Record, report and archive each and every activity (permission granted and / or

rejected) for each access point. • User defined reporting and log formats • Fail safe operation in case of no-power condition and abnormal condition such as

fire, theft, intrusion, loss of access control, etc. • Day, Date, Time and duration based access rights should be user configurable for

each access point and for each user. • One user can have different policy / access rights for different access points.

2.3.1.1.1 Smart Card Readers General Description:

1. Provide surface mounting style 13.56 MHz contact less smart card readers

suitable for minimal space mounting configurations. 2. Contact less smart card readers shall comply with ISO 15693, ISO 14443A

(CSN), and ISO 14443B and shall read credentials that comply with these standards.

3. Contact less smart card readers shall output credential data in compliance with

the SIA AC-01 standard as follows:

a. Reads standard proximity format data from HID iCLASS cards and outputs data as encoded.

b. Reads card serial number (CSN) of a MIFARE card with configurable outputs as 26-bit, 32-bit, 34-bit, 40-bit, or 56-bit.



4. Data security with HID iCLASS cards shall use 64-bit authentication keys to

reduce the risk of compromised data or duplicate cards. The contactless smart card reader and HID iCLASS cards shall require matching keys in order to function together. All RF data transmission between the card and the reader shall be encrypted, using a secure algorithm. Card readers shall be provided with keys that are compatible with the i Class cards.

a. Optionally, readers with site-specific custom keys shall be available from the

factory or on site through the use of HID programmers. b. Optionally, card data may be protected with DES or 3DES encryption through

the use of HID programmers. c. Optionally, custom keys uniquely matched to individual sites/customers are

available to provide a non-interchangeable, high level of security through the use of the HID iCLASS Elite formatting program.

5. The contactless smart card reader shall provide the ability to change operational

features in the field through the use of a factory-programmed command card. Additionally, firmware may be updated by flashing the reader. Command card operational programming options shall include:

a. Output configurations b. LED & Audio configurations c. Keypad configurations

6. Contactless smart card readers shall provide the following programmable

audio/visual indication:

a. An audio transducer shall provide various tone sequences to signify: access granted, access denied, power up, and diagnostics.

b. A high-intensity light bar shall provide clear visual status (red/green/amber) that is visible even in bright sunlight.

7. Typical contactless smart card read range shall be:

a. 2‖ – 3‖ (5.0 – 7.6 cm) using HID iCLASS card. b. 1‖ (2.5 cm) using HID iCLASS Key c. 1‖ (2.5 cm) using HID iCLASS Tag d. 1‖ – 1.5‖ (2.5 – 3.8 cm) using HID iCLASS Prox e. 1‖ – 2‖ (2.5 – 5.0 cm) using MIFARE Card (card serial number only)

8. Contactless smart card readers shall meet the following physical specifications:

a. Dimensions: 1.90‖ x 4.04‖ x .80‖ (4.83cm x 10.26 cm x 2.03 cm) b. Weight: 3.2.oz (90.7 g) c. Material: UL94 Polycarbonate d. Three-part design with separate mounting plate, reader body, and cover. e. Color: As approved by the TNEB.



9. Contactless smart card readers shall meet the following electrical specifications:

a. Operating voltage: 10 – 16 VDC, reverse voltage protected. Linear power supply recommended.

b. Current requirements: (average/peak) 61/178mA @ 12 V DC

10. Contactless smart card readers shall meet the following certifications:

a. UL 294 b. Canada/UL 294 c. FCC Certification d. Canada Radio Certification e. EU and CB Scheme Electrical Safety f. EU – R&TTE Directive g. CE Mark (Europe) h. IP55 Rated i. C-Tick (New Zealand/Australia/Taiwan)

11. Contactless smart card readers shall meet the following environmental

specifications:

a. Operating temperature: -30 to 150 degrees F (-35 to 65 degrees C) b. Operating humidity: 5% to 95% relative humidity non-condensing c. Weatherized design suitable to withstand harsh environments

12. Contactless smart card reader cabling requirements shall be:

a. Cable distance: 500 feet (150m) b. Cable type: 5-conductor #22 AWG w/overall shield c. Standard reader termination: 18‖ (.5m) cable pigtail

2.3.1.1.2 Biometric Readers GENERAL DESCRIPTION: • The Biometric reader shall have industry‘s fastest matching speed (1 to 1000 in less than 1

second) • The Biometric Reader shall be compatible with any standard access control system accepting 26 bit format.



• The readers shall be latest and most versatile Biometric readers for highly secure access control requirements using the capacitive Fingerprint Biometric Technology.

• The Biometric Reader shall be powerful access readers that integrate fingerprint Biometry and iClass technologies into one device. • Fingerprint templates shall be stored on a contactless smart card and transmitted to

the biometric reader to be authenticated with the card holder‘s fingerprint. The user shall authenticate himself by flashing the smart card on the reader and then placing the finger on the sensor. Carrying a fingerprint template on a smart card eliminates the difficulties of fingerprint registration and management issues.

• Biometric readers shall replace smart readers in existing access control systems without any

additional wiring for networking thus making the migration very easy and convenient. • Template storage shall be on iCLASS contactless smart cards. • The Biometric Reader shall have 1:1 search mode by flashing card & placing the finger on

the biometric sensor. • Biometric Readers shall be with capacitive sensor. • The fingerprint sensor shall be Touch chip capacitive with Perfect Print technology. • The reader shall be suitable for Indoor as well as outdoor application. • The Biometric Reader shall be capable of storing up to 9000 templates. • The template size shall be 384 bytes default. (Reducible to 256 bytes) • The biometric reader shall include advance auto correction techniques with features to avoid

problems of finger damage. • The Biometric Reader shall be capable to reject, dummy, non-living proxy objects/ images. 2.3.1.1.3 Controllers: GENERAL DESCRIPTION: The Access control panel shall consist of a 4 reader intelligent 32 bit Arm processor & shall be Ethernet based. It shall communicate with compatible software using an onboard Ethernet 100Base T-port or using a communication card for RS485 or Can bus communication. The ACCESS CONTROL PANEL shall support up to 5 lac transaction buffer memory and 1lac card user buffer.



The ACCESS CONTROL PANEL shall support standard based proximity reader or smart card reader or biometric readers or Keypad readers. The ACCESS CONTROL PANEL Door Module shall store card history and event history in its memory and communicates to central server using PUSH technology. When not connected to central server, it shall be capable of processing Access Control requests and storing all history locally. The ACCESS CONTROL PANEL shall be able to manage following applications: a. Door Access Control b. Smart Card & Biometric Management c. Vehicle Boom Gate Access Control d. Elevator Control e. Intrusion Alarm monitoring f. Lighting and Utilities control The ACCESS CONTROL PANEL shall have following Hardware capabilities: a. The architecture shall be based on Peer to Peer communication. b. Hardware interface and card format settings shall be loaded through central software. c. The door inputs/outputs shall be custom configured. d. The inputs shall support normally open / normally closed / supervised / non-supervised circuits. e. The relays shall be configured for fail safe or fail secure operations. The ACCESS CONTROL PANEL shall have following System Parameters a. 255 Access Levels b. 255 Time zones each with 4 intervals c. 255 holidays d. 5 Lac Transaction records e. 12 digital input points f. Anti-Passback Capability g. 8 output points h. Ability to work in offline mode i. Support all card formats j. Communicate to central software EAMS The ACCESS CONTROL PANEL shall have following Card Parameters a. 1 Lac card capacity b. Card only, Card + Pin mode operation c. Card Add / Delete Feature d. Card + PIN to Arm / Disarm Alarm Function e. Dual-Card Access Function (2-man rule) f. Card with Time / Date Activation & Expiration Function g. Card Control Function to Trigger Up to 64 events.



h. 2 access levels per card user The ACCESS CONTROL PANEL shall have following Door Parameters a. Auto Lock / Unlock (Schedule Controlled) b. Lock / Unlock of Doors by Card Reader Control c. Door Strike Control, 1-255 secs. d. DOTL Alarm, 1-255 secs. The ACCESS CONTROL PANEL shall have following Alarm Parameters a. Door Held Open / Forced Open Alarm b. Fire Alarms Input Triggering c. Tamper Alarm (Enclosure Opening) d. Unauthorized swipes e. Flexible programming of all inputs and outputs linking through user definable logic 2.3.1.1.4 ACCESS CONTROL SOFTWARE: General Description: The Access Management Software (AMS) shall be Web Based Access Control software for managing IP based Access Control Systems. The AMS shall be a complete system in a ―box‖, with the complete web server and database maintained in the central server and the relevant data distributed on the field devices. It shall provide access control and I/O functions in a single compact platform. It shall provide fully integrated access control using door modules and Input / Output modules. The software shall be available in different versions with respect to no. of readers used in the system. Thus shall provide solutions that shall able to address simple basic access control to a very large installation or unlimited scalability. It shall support access control and alarm monitoring for an almost unlimited number of cardholders and events, minimum 4 to almost unlimited number of card readers. The software shall be scaled up as and when required by using additional value pack licenses which shall help in addressing small additions to an existing Access Control System without the need to necessarily scale up to the next version. Value packs available for additional requirements: • 4 reader Connection license • 4 IFIO8 Connection license • 4 Camera Connection license The software shall connect and communicate with the IFIO, controllers through a variety of communication protocols - serial communication on:



• RS485 • CAN BUS • WIFI • GSM / GPRS • Dial up phone lines • Leased lines All user interaction shall be through a standard web browser requiring no software installation and no client licenses. Software shall be easily upgraded to take care of additional Access Control requirements in future as and when the need arises without any difficulty. There shall be an option to add value pack licenses for small increases or opt for the next version. The standard options shall include Access Control with Alarm Management and Time & Attendance System. The software shall have following features: • Network Ready • Central Access Control and Alarm management • Web Control Interface • Inbuilt Integrated Access Control functions • Inbuilt web and database server • Communication on RS485/232, TCP/IP, CAN bus, WIFI, GPRS/GSM, modem • Modular system expansion, Scalable • Data security with encryption • Internet Email and SMS support • Integrated video alarm • Alarm handling procedures • Web reports • Audit Trail • Backups • System can run remotely over dial-up or VPN • Integration to payroll. The software shall be able to give following Access Control Features: • Alarm monitoring for Fire, Battery, AC, DOTL, Door forced Open, Unauthorized swipe, tamper. • Virtually unlimited card and transaction database. • Shall manage unlimited number of door modules and input / output modules. • Virtually unlimited access levels, time zones & holidays. • Card operations: - Card mode, Card and Pin mode. • Unlimited number of card reader interfaces. • Can specify Card activation and Expiry date. • Shall support all proximity card formats, including smart card and biometric devices. • Shall manage dual access levels to one card.



• Remotely lock/unlock doors. • Shall manage dual card rule. • Shall manage devices remotely. • Anti-passback modes: - Full, Soft & Time based APB. Global Anti-Passback mode available. • Shall automatically control the on / off action of electrical equipment. • Customized door open time for each user. • Alarm messaging via Email, SMS. • 25 User license to control and manage the system with 8 concurrent users. • 255 Alarm priorities with operator instructions. • Arm / Disarm alarm monitoring functions The software shall have following specifications but not limited to Operating System: Windows (default), Linux RDBMS: MYSQL, SQL SERVER, ORACLE, Web Server: Apache Tom Cat Communications: • TCP/IP • RS 485 • CAN bus using communication card • WIFI Two stages of Alarm Management: • Acknowledgement on receipt • Closure after investigation 2.3.1.1.5 Locks:

Locks shall be used to keep the door closed in normal condition so that only authorized persons are allowed to enter the premises. Locks shall be a Electromagnetic Lock, Drop Bolt or a Door Strike based on the type of the door. 2.3.1.1.6 Magnetic Contact

The door controller to monitor the door status shall use this contact. The magnetic contact shall be of flush / surface mount type. 2.3.1.1.7 Exit Push Button

This shall be used to cut-off the power supply to the lock and open the door during exit. 2.3.1.1.8 Emergency Release Box: The emergency release box shall be re settable press to open glass type, similar to a rest table manual call point and shall be green in colour. In case of any emergency, the plastic facia in the box shall be pressed to cut-off the power supply to the electro magnetic lock. A key shall be used to reset the Release Switch Box to normal close position.



2.3.1.1.9 Integration with Fire Alarm System: The system shall be capable of being integrated to the fire detection system. Any door controller on the Network shall be capable of receiving an output from the fire alarm system over a single pair of wire, against which all doors shall be automatically force open without any need for manual interface. 2.3.1.1.10 Electro Magnetic Lock – Single Leaf:

Electro Magnetic Locks shall be compatible with virtually any access control system without additional optional brackets. They shall be available in failsafe and fail-security modes. The Electro Magnetic Lock shall have fully concealed mounting feature to enhance aesthetic appearance. The Electro Magnetic Lock shall have following options available: • Basic • Lock Status Sensor, LED • Lock Status Sensor, LED and Timer • Lock Status Sensor, LED, Timer and Door Status Sensor 2.3.1.1.11 Cables :

Cabling between UPS point to the Controllers etc., shall be in the scope of the Implementing Agency. The 8 core 0.75 Sq mm cable connecting the readers, EM Locks, Door Sensors shall be PVC insulated copper, multi strand, Shielded cables shall be 650V grades and shall generally confirm to IS –1554 – 1988 and meet the signal cabling requirement of the system manufacturer. The 4 core 0.75 Sq mm networking cable connecting the door controllers shall be PVC insulated copper, multi strand, Shielded cables shall be 650V grades and shall generally confirm to IS–1554 – 1988 and meet the signal cabling requirement of the system manufacturer. All the cables shall be of fire Retardant and Low Smoke flexible copper cables. 2.3.1.2 Closed Circuit Television (CCTV): The proposed Data Centre/ Disaster Recovery Centre shall have CCTVs with high horizontal resolution of minimum 480 TV lines, wall mounted, fixed (no rotation) type dome camera. The dome cameras with 120 degree video spread and focal length extending up to 7 meters are planned to be strategically mounted so as to facilitate continuous monitoring of predetermined locations such as hot & cold isle in server room etc. The proposed design attempts to ensure non-stop unambiguous face-image capture at predetermined locations in the Data Centre. The storage capacity of the recorder would be of 30 days.

The Critical Data Centre along with the Non Critical area needs to be under constant video surveillance. The primary objective of implementing a CCTV system is to ensure effective surveillance of the area and also create a record for post event analysis. Monitoring cameras should be installed in proper areas to cover all the critical areas of the data centre. The scope of work involves supply, installation, commissioning, testing and maintenance of the Closed Circuit Television system for TNEB Data Centre / Disaster Recovery Centre.



The CCTV system shall provide an on-line display of video images on monitor. The entire setup shall be monitored from the control room on 24/7 basis. Cameras with suitable lenses shall be used to view all the critical areas of the Data Centre, Reception and Corridor.

The CCTV system shall be based on the use of fixed dome cameras and integrated Pan/Tilt/ Zoom cameras that can be controlled from control room location.

The CCTV System shall be a combination of color fixed and PTZ (Pan / Tilt / Zoom) designed for continuous duty. The system and each of its devices shall be designed to meet the site ambient temperature and the site environmental conditions and shall operate satisfactorily under the specified permitted voltage and frequency variation band of the power supply source system.

All outdoor cameras shall be IP 66 rated. (Ingress Protection) 6-Dust proof and 6-Water proof) The CCTV System proposed to fulfill the overall surveillance / Observation requirements and enhance the level of security necessary in a software establishment, which shall be complete in all respects and shall comprise of following minimum items. A set of fixed dome cameras and integrated Pan / Tilt / Zoom (PTZ) cameras with remote control operation of focus and zoom.

A professional housing with internal and external cooling fans to protect both the camera and lens from the rigors of all environments and at the same time it should be designed and built for ease of installation and maintenance.

A complete CCTV control facility that performs all the functions with provision to increase the total number of inputs for each monitor site.

CCTV Cabinets as required complete with all cable termination facilities, cable distribution system for video and power system along with any additional video amplifiers and other video equipment as may be required.

End point amplifiers as may be required to achieve satisfactory system operation.

Test equipment covering all tools, tackles and testing equipment / kits as required for preventive and first line maintenance including test monitors, camera adjustment and testing facilities.

Complete range of accessories as required.

All necessary relay boxes connectors, extension cables and adapter boxes as required at each of the ends of the CCTV System as required.



2.3.1.2.1 General

All systems and components shall have been thoroughly tested and proven in actual use.

All systems and components shall be provided with a one-day turnaround repair and 24-hour parts replacement. The manufacturer on warranty and non- warranty items shall guarantee the repair and parts.

Specifications included in this section are indicative and considered as a minimum. Component and software that shall be acquired at the time of implementing the project shall be the latest versions available in the market.

The system also should provide clear & accurate indication of an intruder or abnormal movement within and around the Facility.

2.3.1.2.2 System Capabilities: The system shall provide visual images from the cameras located throughout the facility. The cameras located shall be fed into the Digital Video Server (DVS) located in the security room. The Digital Video Server shall consist of 16 channels Digital Multiplexer with built-in recording system into Hard Disk. The Main Security Control Room which shall house the Monitors and the Digital Video Management Server. The CCTV should be equipped with Digital recording facility for later scrutiny, with at least 30 days of recording facility. 2.3.1.2.3 Technical Requirements: 2.3.1.2.3.1 Cameras: The cameras will be of 1/3‖ format CCD pickup device for fixed lens camera and 1/4‖ format for PTZ cameras. The cameras are being used for special observation purposes and are being located both indoor and outdoor & mounted on specially designed suitable mounting arrangement for operation under all severe environmental conditions to which these will be subjected especially the outdoor locations. The cameras being used at these locations shall have the following basic minimum requirements.



The cameras shall be fixed dome cameras and the integrated Pan/Tilt/Zoom cameras type that can be controlled from its monitor position, such that the cameras can be panned, tilted, zoomed and focused on to any part or entire area which they have been located to bring under observation from keyboard location.

The cameras shall be complete with the latest state of the art optical systems, filters, light sensitive pickup systems suitable for capturing images with very low light levels, and necessary interlaced scanners, encoders, decoders, associated amplifiers, synchronization facilities and any interfacing adapters as required, with all systems of that type suitable for a compact, durable, distortion free and clear image processing type camera.

The color cameras (Integrated Pan/Tilt/Zoom dome) shall have a minimum resolution

of 480 TV Lines and sensitivity of 0.08 lux (colour) and 0.013 lux (monochrome). The outdoor PTZ cameras shall be day/night camera with a minimum of 23X-optical zoom and 12X-digital zoom.

The Outdoor PTZ camera shall have a minimum of 80X wide dynamic range, to

withstand complex light variations in the environment.

The preset accuracy for the camera shall be +/- 0.1degree maximum.

The Outdoor PTZ camera shall have a preset speed of 360 deg /sec Pan and 200 deg /sec tilt.

The camera shall resume after alarm to the previously programmed state of alarm after alarm acknowledgement.

The outdoor PTZ camera shall have auto flip feature, whereby which the dome shall rotate at 180 deg at the bottom of the tilt travel.

The cameras shall have automatic level control complete with auto iris, and gain control of the amplifier and shall be complete with spot filter as required.

The cameras shall have automatic shutter or 100% closing iris to prevent burning-in of

image pickup device when the camera is not in use, both the shutter and iris shall fully close upon failure of power supply in order to prevent damage.

The cameras shall have standby circuitry for when the camera is not selected on any of the monitors. The beam current of the camera pickup device shall be switched off automatically.

The cameras shall have automatic circuitry which relates the black level in the signal to the darkest spot of the picture (black level control), limits the video signal in case of scene high-lights in order to prevent overloading of the monitor (White limiter), and prevents the automatic sensitivity control from reacting to strong highlights (Peak white eliminator).



The cameras shall have the features that shall prevent the occurrence of internal condensation or condensation on the window, necessary heaters/thermostats shall be provided as required.

The cameras shall be equipped with Pan & Tilt heads to allow for rotation over a

Minimum 360 degrees.

The cameras shall be provided with a local power distribution junction box, with local isolation switches and fuses to isolate each of the power circuits of the camera related to main camera power, and other circuits related to Pan & Tilt head, cooling fan, blower etc.

The camera housing shall have a rain/sun shield and a weather protection feature with a minimum IP protection of IP66 for outdoor mounted cameras. For indoor cameras, the protection class shall be IP45.

The aperture ratio (f-number) of the lenses shall be selected such that, a good picture

is obtained at night.

Power supply units, as required for the cameras, shall be provided.

Each of the CCTV cameras shall be located, mounted, positioned and install such that:

The camera and its supporting structures shall be present with least obstruction of view and least obstruction for satisfactory movement and operation of the camera due to remote and local controls.

The cameras shall not be mounted on vibrating structures, where this is not possible

than special structures or other facilities/measures for reducing vibrations shall be provided.

All the camera movements along with Pan and Tilt, and associated forces on structures are taken in to account during the design and installation of the cameras.

The installation shall be done with least risk of accidental damage.

The equipment and its components are accessible for maintenance.

The vibration of any object shall be less than that specified for the camera. 2.3.1.2.3.2 Monitors There shall be total of 3 Nos. (2 Nos. – 36‖ and 1 No. - 42‖) monitors for each Digital Video Recorder to view the multiplexed (36‖&42‖) output and the third one to view the switched (36‖). Two monitors should be located in the BMS room and one Monitor at Security Cabin. The monitor shall be positioned such that room lights and windows are minimized.



The monitors may also be built into the control desk as appropriate. Each of the monitors used at the main control room and operator status shall have the following basic minimum requirements:

The monitor shall be suitable for use as desktop units.

The monitors shall be high-resolution video monitors. The monitor shall have a bandwidth of at least 10 MHz (-3dB) and a horizontal resolution in the center of the picture minimum 480 lines in the case of color monitor.

The monitors shall have the facilities to loop the video signal through the other monitor.

Each monitor shall have local control knobs and remote control equipment and panel

for monitor controls associated with power on/off switch standby on/off switch and for adjustment brightness, contrast, horizontal hold, vertical hold etc.

Monitor shall be suitable for use as desktop units.

2.3.1.2.3.3 Video & Telemetry Cables The video signal shall be transmitted using co-axial cable and control of all zoom lens and Pan-Tilt functions through twisted pair interconnected between receiver and DVR. Cabling for CCTV shall cover:

Video link Remote control of cameras in terms of its control of pan tilts zooms & focus. Power supply cables.

The cable shall be shielded or provided with facilities to avoid interference between signals. The transmission losses shall be minimized and where required for satisfactory operation correction amplifiers or cable equalizers shall be provided in the monitors on the CCTV cabinets. 2.3.1.2.3.4 Cabinets: CCTV cabinets shall be provided near set of monitors. The cable from the cameras shall be terminated in this cabinet from where these signals are distributed to the monitors. All necessary video amplifiers, interfaces etc. that forms the part of the CCTV system shall be installed in the cabinet. 2.3.1.2.3.5 Dome Camera The Dome camera unit shall be 1/3‖ CCD Color Dome camera and shall provide a minimum of 540 TV lines resolution. It shall have built-in 3-9mm varifocal lens. The camera shall operate



on minimum lux level not more than 0.15 lux. The complete unit shall be housed in an integrated dome and base unit, both preferably made from injection moulded plastic. It shall be possible to adjust the camera head inside the dome in both the planes so that it can be wall or ceiling mounted. The camera shall operate on 24 V AC or 12 volts D.C. 2.3.1.2.3.6 Digital Video Recorder (DVR) The DVR shall provide a high quality recorder capable of storage and play back of images at a rate of up to 400 FPS (PAL) and shall posses an internal watchdog, duplex operation, windows Operating system, watermarking of each frame, 8 alarm inputs, software configurable video motion detection and scheduled event recording. The digital recorder shall comply or exceed the following design and performance specifications:

The DVR (Digital video recorder) shall have 400 images/sec viewing speed as well as 40 images / sec recording speed.

The recorder shall have a minimum of 16 video inputs. It shall also have looping inputs for all 16 inputs.

The recorder shall run on Windows Platform

The recorder shall provide PAL , the following recording resolutions shall be possible

320 x 288 / 640 x 288 / 640 x 576 / 352 x 288 / 704 x 288 / 704 x 576

The DVR shall have 6 high speed USB ports

The DVR shall be in a position to display 36 video images simultaneously on the DVR or the remote client from Multiple DVRS on the LAN.

The recorder shall support instant playback and shall have programmable favorite

channel selection.

The recorder shall allow a minimum of 6 X digital zoom on playback

The recorder shall support simultaneous playback and record full duplex operation.

The recorder shall have the feature of an internal hardware watchdog. The reorder shall have an internal hard disc capacity of min 2 TB and shall be possible to connect a RAID 5 back up.

The DVR shall be of the same make as that of the cameras to ensure 100% system compatibility. All the components in the DVR including hard disc etc shall be provided from the manufactures factory and not locally assembled DVRS shall be provided. 100 % finished goods shall be supplied from the manufacturer.



The DVR shall have each channel individually programmable.

Remote workstation shall be in a position to administer / view live images / search and view playback images.

The recorder shall have 32 hard-wired alarm inputs, which shall be capable of configuring globally as normally open or normally closed. Each of these inputs shall be assigned to any or all of the cameras to trigger recording at custom record rates. Up to 5 seconds of pre-alarm shall also be available on each camera.

The recording of the recorders are watermarked and encrypted requiring backup

software to open and view them. In addition, images backed up in bitmap or JPEG format can be verified for authenticity.

The recorder shall be suitable for mounting on a standard 19‖ rack. There shall be a network management Digital Video Recorder (DVR) if more than DVR

is any or all of the cameras to trigger recording at custom record rates. Up to 5 seconds of pre-alarm shall also be available on each camera.

The recorder shall provide 24 dry contact outputs, each of which shall be associated

with any or all of the camera inputs and/or alarm inputs.

The recorder shall provide an extremely flexible scheduling on a week-by-week basis. Each 24-hour period shall be divided into 15-minute blocks enabling different configurations of recording triggers to be available during each 15-minute period.

The recorder shall provide onscreen controls for operation of PTZ cameras. All fully functional cameras shall be controlled via a PC USB / Ethernet which shall use an additional converter to communicate via RS485/422.

The recorder shall provide an Ethernet port as standard. If required in addition free

client software shall be supplied which enables remote control and connectivity via TCP/IP.

The DVR shall support Gigabit port 10/100/1000 base T.

The recorder shall be tested to comply with UL regulations/certifications.

The recorder shall provide a screen resolution of 1280 x1024 ( XVGA output )

The recorder shall have a built in watchdog that will automatically restart after a power failure and begins to record as per its configured settings.

The recorder shall provide the ability to manually ‗back up‘ recorded data to hard disk or DVD / RAID while the unit continues to record.

The recorder shall be programmed using a keyboard and mouse via on screen menus.



The recording of the recorders are watermarked and encrypted requiring backup software to open and view them. In addition, images backed up in

bitmap or JPEG format can be verified for authenticity The recorder shall be suitable for mounting on a standard 19‖ rack.

There shall be a network management Digital Video Recorder (DVR) if required to allow viewing of cameras from multiple DVR‘s in any combination.

The DVR shall support pre-alarm and post alarm recording.

The DVR shall support CIF / 2CIF and 4 CIF resolutions while recording.

Required to allow viewing of cameras from multiple DVR‘s in any combination.

The DVR shall support pre-alarm and post alarm recording.

The DVR shall support CIF / 2CIF and 4 CIF resolutions while recording. 2.3.1.3 Fire Alarm System (FAS): Fire can have disastrous consequences and affect operations of a Data Center. The early detection of fire and employing means for automatic suppression of the fire is important for effective functioning of a Data Center.

The FAS system should completely meet the NFPA (National Fire Protection Association) standards. 2.3.1.3.1 System Description: The Fire alarm system shall be an automatic 1 to n (e.g. 24) zone single loop addressable fire detection and alarm system, utilizing conventional detection and alarm sounders. Detection shall be by means of automatic heat and smoke detectors located throughout the Data Center (ceiling, false floor and other appropriate areas including Switch gear area where fire can take place) with break glass units on escape routes and exits.



2.3.1.3.2 Control and indicating component: The control panel shall be a microprocessor based single loop addressable unit, designed and manufactured to the requirements of EN54 Part 2 for the control and indicating component and EN54 Part 4 for the internal power supply.

All controls of the system shall be via the control panel only.

All site-specific data shall be field programmable and stored in an integral EEPROM. The use of EPROM‘s requiring factory ‗burning‘ and re-programming is not acceptable.

All internal components of the control panel shall be fully monitored.

The control panel shall be capable of supporting a multi device, multi zone 2-wire detection loop. Removal of 1 or more detection devices on the loop shall not render the remaining devices on the loop inoperable.

The system status shall be made available via panel mounted LEDs and a backlit 8 line x 40-character alphanumeric liquid crystal display.

All user primary controls shall be password protected over 4 access levels in accordance with EN54 Part 2. Essential controls, such as Start / Stop sounders and Cancel fault buzzer, etc. will be clearly marked.

Cancel fault and display test functions shall be configurable to be accessed from level 1 or level 2.

All system controls and programming will be accessed via an alphanumeric keypad.

The control panel will incorporate form fill menu driven fields for data entry and

retrieval.

The control panel shall log a minimum of 700 events comprising of 100 event fire log and 200 event fault, disablement and historic logs, giving time, date, device reference and status of indication.

Fire, fault and disablement events shall be logged as they occur. Visual and audible conformation shall be given on an array of LEDs, the Liquid Crystal Display and the internal supervisory buzzer.

The control panel shall have an integral automatic power supply and maintenance free

sealed battery, providing a standby capacity of a minimum 72 hours and further 30 minutes under full alarm load conditions. The system shall be capable of full recharge within 24 hours following full system discharge. The performance of the power supply and batteries shall be monitored and the fault should be detected when alarmed. The system shall protect the batteries from deep discharge.



All terminations within the control panel with the exception of the 230V mains connection will be via removable terminal screw fixing points.

The control panel will have a programmable maintenance reminder to inform the user that maintenance of the system is required. This function shall provide the user with the option of a monthly, quarterly, annually or bi-annually reminder prompts. The maintenance reminder will be indicated on the control panel. This message shall be resettable by the user and will not require the intervention of specialist support. The control panel will provide programmable free text field as part of the maintenance reminder facility.

The system will include a detection verification feature. The user shall have the option to act with a time response to the fire condition. This time shall be programmable up to 10 minutes to allow for investigation of the fire condition before activating alarm outputs. The operation of a manual call point shall override any verify command.

2.3.1.3.3 Manual Controls: • Start sounders • Silence sounders • Reset system • Cancel fault buzzer • Display test • Delay sounder operation • Verify fire condition • Enter or modify device text label • Setup maintenance reminder • Assign or modify zones • Disable zones, device, sounders, FRE contact and auxiliary contacts • Enable zones, device, sounders, FRE contact and auxiliary contacts • Action weekly test • Disable loop 2.3.1.3.4 Cable entries: The control panel will include the necessary top entry and rear entry cable entry points via 20mm knockouts. 2.3.1.3.5 Manual call points (MCP):

MCP‘s shall be addressable and of the steady pressure break glass type manufactured to the requirements of BS 5839: Part 2. A test key shall be provided to allow the routine testing of the unit to meet the requirements of BS 5839 Part 1 1988, without the need for special tools or the need to unfasten the cover plate.

The device shall be automatically addressed by the CIE (Control and indicating Equipment) on power up of the loop without the need of the insertion of a pre-



programmed EPROM or setting of DIL (Dual-In Line) switches. The device shall incorporate a short circuit isolation device and a red LED indicator.

The MCP (Manual Call Point) shall be suitable for surface or flush mounting. When flush mounted the device shall be capable of fixing to an industry standard single gang box.

2.3.1.3.6 Smoke detectors:

Smoke detectors shall be of the optical or ionization type. Devices shall be compatible with the CIE conforming to the requirements of EN54 Part 7 and be LPCB approved.

The detectors shall have twin LEDs to indicate the device has operated and shall fit a

common addressable base. 2.3.1.3.7 Heat detectors:

Heat detectors shall be of the fixed temperature (58° C) or rate of temperature rise type with a fixed temperature operating point.

Devices shall be compatible with the CIE conforming to the requirements of EN54 Part 5 and be LPCB approved.

The detectors shall have a single LED to indicate the device has operated and shall fit a common addressable base.

2.3.1.3.8 Addressable detector bases:

All bases shall be compatible with the type of detector heads fitted and the control system component used. Each base shall comprise all necessary electronics including a short circuit isolator.

The device shall be automatically addressed by the CIE on power up of the loop without the need of the insertion of a pre-programmed EPROM or setting of DIL switches.

Detector bases shall fit onto an industry standard conduit box.

2.3.1.3.9 Audible Alarms: Electronic sounders shall be colored red with adjustable sound outputs and at least 3 sound signals. The sounders should be suitable for operation with a 24V DC supply providing a sound output of at least 100dBA at 1 meter and 75 dBA/ min, for a bed head or sounder base type device. The sounder frequency shall be in the range of 500Hz to 1000Hz.



2.3.1.3.10 Commissioning:

The fire detection and alarm system will be programmable and configurable via an alpha numeric keypad on the control panel.

The labeling of Device and Zone labels should be part of the system.

Necessary Software to the control panel. 2.3.1.4 Fire Alarm Safety Control System: 2.3.1.4.1 Manual Addressed Module:

The Manually Addressed Module shall allow the connection and addressing of conventional detectors and call points and offer a Micro Input, Micro Output and conventional Sounder driver/address Module. The Module shall provide the facility to upgrade all the components of a conventional system to a full addressable system, ideal for retrofit installations using its small physical size and convenient 8 way DIL switch for address setting and configuration. The Module shall be fully compatible with all standard address modules, addressable sounders, addressable manual call points and detectors facilitating extensions to the existing systems. To assist easy identification the Manually Addressed Module shall be supplied in different colored plastic housings for: Manual call point interface / Micro Input Module. Micro Output Module / LOOP SOUNDER / BEACON Controller Smoke / Heat Detector interface. 2.3.1.4.2 Addressable Input / Output Module: The Addressable Input/Output Module shall be a fully monitored device which permits the interfacing of third party equipment with the Fire Alarm Control panel using normally open dry contact connections while also providing a changeover output relay to control ancillary equipment. The connection to the input is monitored for fault (open or short circuit) and Alarm conditions. The output relay shall be powered from the detection loop (default) or optionally by an external 24V DC supply. Relay operation shall be confirmed by an on board yellow LED. The interface shall be used to monitor the contacts of an external system which must be interfaced to the Fire Alarm System, for example a Flow Switch in a sprinkler system to indicate if the sprinklers have been activated or extinguishant level monitoring in Gas Extinguishing systems etc. The output relay shall be programmed to close fire doors, activate smoke removal systems etc. The factory default setting for the relay shall be such that it shall receive it‘s operating power from the Loop. Opening a link on the underside of the PCB shall allow the use of



external power which is optically isolated from the detection loop. This option is recommended in the event that many I/O units are connected to the same Loop. The Addressable I/O module shall be available as an electronic module with four fixing holes or as a boxed unit for field installation. 2.3.1.4.3 Manual Call Point: Manual Call Point shall be used as manual alarm at the fire site when the person confirms that there is a fire. Each Manual Call Point shall have push button enclosed in to it. 2.3.1.4.4 Analog Addressable Module: The detector shall use the light-scattering principal to measure smoke density and shall send data to the FACP indicating analog level of smoke density. Detectors shall be Analog and Addressable, and shall connect to the Fire Alarm Control Panel using Signaling Line Circuits. The Detector shall have following features: • Dual LEDs for 360°visibility • Advanced detection and discrimination algorithms • Easy installation and maintenance • Sleek low-profile housing design • Durable sensor head, no need for replacement • Sensor base option: standard and Schottky Diode The Detector shall be EN-54 approved. The Addressable INPUT Module shall be a fully monitored device which permits the interfacing of third party equipment with the Fire Alarm Control panel using normally open dry contact connections. The connection to the Addressable INPUT Module shall be monitored for fault (open or short circuit) and Alarm conditions. The interface shall be used to monitor the contacts of an external system which must be interfaced to the Fire Alarm System, for example a Flow Switch in a sprinkler system to indicate if the sprinklers have been activated or extinguishant level monitoring in Gas Extinguishing systems etc. The module shall be powered by the detection loop and is available as an electronic module with four fixing holes or as a boxed unit for field installation. 2.3.1.4.5 Analog Addressable Control Panel The Fire Alarm Panel shall be Analogue Addressable Fire Alarm control system with networking capabilities that facilitate the configuration of complex wide area Fire detection systems. Its Modular construction and distributed intelligence shall allow systems of up to 96 Loops to be constructed. With a high level of built in redundancy and emergency backup



features, the offered Fire Alarm System shall be fully equipped to control the most complex installations. The Panel shall be available as a standalone system of up to 12 Loops in a single cabinet and can be expanded up to 96 Loops via a networked array of sub-panels. The sub Panels shall be supplied in a blank box version or combined with a repeater to allow remote display and control of the system. Networking shall be carried out by a monitored redundant RS422/485, Fibre optic loop or TCP/IP network. It shall be possible to enhance the networking capabilities by a wide range of programming options which provide the capability to customize the system according to the needs of the customer. Flexible cause and effect programming of I/O devices and warning devices shall ensure that Fire or Fault warnings trigger the appropriate response. An interactive Graphic representation of the system shall be displayed on the user‘s computer via the Graphics software. This shall be available as optional feature of the system. All the devices on the system shall be displayed on a building plan showing their status in real time. In the event of Fire or fault it shall be possible for customer to control the system and access all the necessary information with a few mouse-clicks. To reduce the time spent at the commissioning stage, the panel shall perform Automatic Device detection at start up. In Installation mode, the system shall detect and recognize addressed and connected devices with the system being fully operational in less than two minutes. The default programming shall ensure that the system is ready to detect Fire / fault alerts from the moment that power is applied. Additional programming, to customize the system shall be implemented via the onboard keypad, IR programmer, PS 2 Keyboard or with a laptop PC running the Loader software. The Fire Alarm Control Panel should be listed under EN54. It shall be possible to integrate addressable fire alarm system with BMS. It shall be possible to have 3 Different Communication Mediums (RS485/Fiber Optics/TCP I/P) in one System. Offered system shall have Class – connectivity. The panel shall have following features:

The addressable fire alarm system shall be expandable from 1-96 Loops with distributed intelligence for added security.

The addressable fire alarm system shall be able to connect 125 device addresses per loop. And up to 96 Loop sounders with 32 individually programmable addresses per Loop.

The addressable fire alarm system shall have 2 Fire output changeover relays.

The addressable fire alarm system shall have open collector outputs for Fire, Fault and pre-alarm remote indication.

The addressable fire alarm system shall also have 2 fully monitored sounder outputs on main panel and each sub panel.

Repeaters shall be available with optional integrated Sub-Panels.

Black box option shall be available for Sub Panels.



The addressable fire alarm system shall have detector loops which shall be fully monitored for integrity.

The addressable fire alarm system shall have 384 programmable zones.

The addressable fire alarm system shall have 512 fully programmable sounder and I/O groups.

The addressable fire alarm system shall have event Log of 2000 entries with FIFO principle.

The addressable fire alarm system shall have Backlit LCD display 4 * 40

The addressable fire alarm system shall have multiple programming options, onboard keypad, Remote IR(Optional), PS2 Keyboard

The addressable fire alarm system shall come with Windows™ based Loader Software for Programming with Laptop PC.

The addressable fire alarm system shall provide Windows™ based PC Graphics package for alarm management and reporting as an optional feature.

The addressable fire alarm system shall provide a Multiple Language support (menu

selectable)

The addressable fire alarm system shall provide BMS output RS 232 as an optional feature.

Evacuate / Class Change input 2.3.1.4.6 Power Supply: The power supply unit shall accept 85-265 V AC Power Supply. The Power supply unit shall supply DC Power to all Modules/ within Fire Alarm Panel as well as to all devices wired on all the FACP Loops. Batteries shall be rechargeable, sealed maintenance-free type. Battery Capacity shall be sized to provide backup power to Fire Alarm Panel. 2.3.1.4.7 Cabling: 2C X 1.5Sq. mm FRLS (Flame retardant Low Smoke) armoured cable, PVC insulated and screened copper wire. 2.3.1.4.8 Addressable Isolator Module: The Isolator shall be designed to provide protection against short circuit faults on Analogue Addressable systems. The isolator shall protect the loop in the event of a short circuit by



disconnecting the section of the loop where the short circuit has occurred. After rectifying the fault, isolating circuitry shall reconnect the affected part of the System. The Isolator shall be delivered in a White round junction box with knockouts that permit easy cable entry. Two Yellow LED indicators shall be provided to indicate on which side of the Device there is a short circuit (Loop In and Loop Out) to facilitate easy localization of the fault. It shall be not necessary to look for two isolators to confirm the location of the affected section. It shall be possible to connect up to 32 devices between two isolator (EN54) or 20 devices for BS5839 compliance. Under Normal conditions the Isolator shall provide a low resistance of 0.3ohm in either direction. When a short circuit condition is detected the isolator shall switch to the open state thereby isolating the Loop ―IN‖ and Loop ―OUT‖ lines. An Isolator shall be polarity sensitive. The isolated section shall be tested every 3 seconds with a voltage pulse and shall be automatically reconnected when the load resistance is greater than 175 ohm. The Addressable INPUT Module shall be a fully monitored device which permits the interfacing of third party equipment with the Fire Alarm Control panel using normally open dry contact connections. The connection to the Addressable INPUT Module shall be monitored for fault (open or short circuit) and Alarm conditions. The interface shall be used to monitor the contacts of an external system which must be interfaced to the Fire Alarm System, for example a Flow Switch in a sprinkler system to indicate if the sprinklers have been activated or extinguishant level monitoring in Gas Extinguishing systems etc. The module shall be powered by the detection loop and is available as an electronic module with four fixing holes or as a boxed unit for field installation. 2.3.1.4.9 Addressable Sounder: The Sounder shall be a surface mount Addressable sounder with low power consumption available in either Red or White housings. Sounder shall have provision of different tones selection by jumper settings and lowering Sound levels by using potentiometers. Sounders shall be capable of freeing up addresses for more detection devices, i.e., when individual address reporting is not required. Up to 32 individually addressed sounders shall be possible to install in per loop. The address shall be set using switches 1 to 5 of the 6 way DIL switch. Shadow sounders shall not report back to the control panel so their presence on the loop shall not be monitored. Shadow sounders shall draw current from the loop (3.5mA in alarm) and shall be included in loop load calculations.



2.3.1.4.10 Cables: All PVC insulated copper, armoured/ unarmoured, multi strand, FRLS, Twisted Pair, Shielded cables shall be 650V grades and shall generally confirm to IS –1554 – 1988 and meet the signal cabling requirement of the system manufacturer. The strands of cable shall not be cut to accommodate & connect the terminals. Terminals shall have sufficient cross sectional area to take in all the strands. Cables shall be laid by skilled and experienced workmen. Great care shall be taken while laying cables to avoid links. At all changes in directions (vertical & horizontal planes) the cables shall be bent smooth with a radius as recommended by the manufacturers. 2.3.1.5 Aspiration Smoke Detection (ASD) System: Aspiration Smoke Detection System is the vital system for any critical area. Its high sensitivity of detecting smokes at the level of 0.005 obs/m ensures alerts at very early stages of fire. The ASD system shall be designed for server room only. (obs/m Obscuration level – Make less visible or unclear) 2.3.1.5.1 Technical Compliance for Aspiration Smoke Detection The Aspiration Smoke Detection (ASD) system shall provide an early warning of fire in its incipient stage, analyze the risk and provide alarm and actions appropriate to the risk. The system shall include, but not be limited to, a Display Control Panel, Detector Assembly and the properly designed sampling pipe network. The system component shall be supplied by the manufacturer or by its authorized distributor. Regulatory Requirements: • National Electrical Code (NEC) • Factory Mutual • Local Authority having Jurisdiction 2.3.1.5.2 Codes and standards:

The ASD System shall comply one or more of the following codes and standards NFPA Standards, US British Standards, BS 5839 part :1 2.3.1.5.3 Approvals All the equipments shall be tested, approved, and/or listed by : LPCB (Loss Prevention Certification Board), UK FM (Factory Mutual), US UL (Underwriters Laboratories Inc.), US ULC (Underwriters Laboratories Canada), Canada



2.3.1.5.4 Design Requirements: The System shall consist of a high sensitive LASER-based smoke detector, aspirator, and filter. It shall have a display featuring LEDs and Reset/Isolate button. The system shall be configured by a PC software or a hand held programmer. The system shall allow programming of:

Multiple Smoke Threshold Alarm Levels.

Time Delays.

Faults including airflow, detector, power, filter block and network as well as an indication of the urgency of the fault.

Configurable relay outputs for remote indication of alarm and fault Conditions.

It shall consist of an air sampling pipe network to transport air to the detection system, supported by calculations from a computer-based design modeling tool.

Performance Requirements

Shall provide very early smoke detection and provide multiple output levels corresponding to Fault, Pre-Alarm, and Fire. These levels shall be programmable and shall be able to set sensitivities ranging from 0.005 – 20% obscuration / metre

Shall report any fault on the unit by using configurable fault output relays.

Shall monitor for filter contamination. 2.3.1.5.5 Materials and Equipments Both Light Scattering and Particle Counting shall be utilized in the device as follows:

The Laser detection Chamber shall be of the mass Light Scattering type and capable of detecting a wide range of smoke particle types of varying size. A particle counting method shall be employed for the purposes of preventing large particles from affecting the true smoke reading.

Monitoring contamination of the filter (dust & dirt etc.) to notify automatically when

maintenance is required.

The Laser Detection Chamber shall incorporate a separate secondary clean air feed from the filter; providing clean air barriers across critical detector optics to eliminate internal detector contamination.



The detector shall not use adaptive algorithms to adjust the sensitivity from the set during commissioning. A learning tool shall be provided to ensure the best selection of appropriate alarm thresholds during the commissioning process.

2.3.1.5.6 Detector Assembly: The Detector, Filter, Aspirator and Relay Outputs shall be housed in a mounting box and shall be arranged in such a way that air is drawn continuously from the fire risk area by the Aspirator and a sample passed through the Dual Stage Filter and then to the detector. The detector shall be LASER-based and shall have an obscuration sensitivity range of 0.005 – 20% obs/m. The detector shall have three independent field programmable smoke alarm thresholds across its sensitivity range with adjustable time delays for each threshold between 0-60 seconds. The Detector shall also incorporate facilities to transmit the following faults

Detector Zone Airflow System

Network Filter Power

Urgent and Minor faults. Minor faults shall be considered as servicing or maintenance signals. Urgent fault shall indicate that the unit may not be able to detect. The detector shall have single pipe inlet which must be reporting both Minor and Urgent flow faults. The filter must be a two-stage disposable filter cartridge. The first stage shall be capable of filtering particles in excess of 20 microns from the air sample. The second stage shall be ultra-fine, removing more than 99% of contaminant particles of 0.3 microns or larger, to provide a clean air barrier around the detector‘s optics to prevent contamination and increase service life. The aspirator shall be a purpose-designed rotary vane air pump. It shall be capable of allowing/ supporting for a single pipe run with a transport time of less than 90 seconds. The Assembly must contain relays for fire alarm and fault conditions. The relays shall be software programmable (latching or non-latching). The relays must be rated at 2 A at 30V DC. Remote relays shall be offered as an option and either configured to replicate those on the detector or programmed differently. The Assembly shall have built-in event and smoke logging. It shall store smoke levels, alarm conditions, operator actions and faults. The date and time of each event shall be recorded. Each detector (Zone) shall be capable of storing up to 12000 events. The detector shall be programmed through a PC software.



2.3.1.5.7 Displays on the Detector Assembly: The detector shall have a LED display for the multiple alarm threshold levels indicated and faults such as detector fault, airflow fault and indication for Isolate and Reset. 2.3.1.5.8 Sampling Pipe: The PVC sampling pipe shall be smooth bore with an internal diameter between 15-25mm. Normally, pipe with an outside diameter of 25mm and internal diameter of 21mm should be used. The PVC pipe material should be suitable for the environment in which it is installed, or should be the material as required by the specifying body. All joints in the sampling pipe must be air tight except at entry to the detector. The PVC pipe shall be identified as Aspirating Smoke Detector Pipe along its entire length at regular intervals not exceeding the manufacturer‘s recommendation or that of local codes and standards. All PVC pipes should be supported at not less than 1.0 m centres , or that of the local codes or standards. The far end of each trunk or branch pipe shall be fitted with an end cap and drilled with a hole appropriately sized to achieve the performance as specified and as calculated by the system design. 2.3.1.5.9 Sampling Holes: Sampling Holes of 2 – 6 mm, or otherwise appropriately sized holes, shall not be separated by more than the maximum distance allowable for conventional detectors as specified in the local codes & standards. Intervals may vary according to calculations. Each sampling point shall be identified in accordance with Codes or Standards. 2.3.1.6 Gas Based Fire Suppression (GBFS) System: The proposed design shall be based on NFPA standards, taking the minimum design concentration of 6.25% (0.485 gm/m3) as applicable to class ‗A‘ & ‗C‘ risks.

2.3.1.6.1 Technical Compliance for Gas Based Fire Suppression System: The Clean Agent Fire Suppression system cylinder, CCOE, Nagpur approved seamless cylinders, discharge hose, fire detectors and panels and all other accessories required to provide a complete operational system meeting applicable requirements of NFPA 2001 Clean Agent Fire Extinguishing Systems, NFPA 70 National Electric Code, NFPA 72 National Fire Alarm Code or ISO standards must be considered to ensure proper performance as a system with UL/FM approvals and installed in compliance with all applicable requirements of the local codes and standards.



The Clean Agent system considered for Total flooding application shall be in compliance with the provisions of Kyoto Protocol.

Care should be taken that none of the Greenhouse Gases identified in the Kyoto Protocol is used for fire suppression application.

The minimum criterion for the selection of the Clean Agent will be on the following parameters

Zero Ozone Depleting Potential. Global Warming Potential not exceeding one. Atmospheric Lifetime not exceeding one week.

The clean agent fire suppression system with FK-5-1-12 and Inert Gas based systems are accepted as a replacement of HCFC and HFC as per Kyoto Protocol.

The Clean Agent considered for the suppression system must be suitable for man

occupied areas with NOAEL Level (No observable adverse effect level) of 10% as compared to the design concentration to ensure high safety margin for the human who might be present in the hazard area.

The minimum design standards shall be as per NFPA 2001, 2004 edition or latest

revisions.

Care shall be given to ensure proper early warning detection system with minimum sensitivity of 0.03% per foot obscuration as per NFPA 318 & NFPA 72 to ensure that one gets a very early warning to investigate the incipient fire much before the other detectors activate the fire suppression system automatically.

All system components furnished and installed shall be warranted against defects in design, materials and workmanship for the full warranty period which is standard with the manufacturer, but in no case less than five (5) years from the date of system acceptance.

Additionally, Portable Extinguishers (CO2 or Halon based Extinguishers are not acceptable) shall be placed at strategic stations throughout the Data Centre.

OR

Fire suppression system shall deploy FM-200 (ETG-5) based gas suppression systems with cross-zoned detector systems for all locations. These detectors should be arranged in a manner that they activate the suppression system zone wise to cater to only the affected area.

Illuminated Signs indicating the location of the extinguisher shall be placed high enough to be seen over tall cabinets & racks across the room. Linear heat detection cable should be placed along all wire pathways in the ceiling. This should not directly trigger the suppression system—rather; it should prompt the control system to sound an alarm.



The OEM (/ Bidder) shall give a Certificate stating that their FM-200 system is approved by UL / FM / VdS / LPC/CNPP for use with Seamless Steel Cylinders (Component as well as System Approval).

The OEM (/ Bidder) shall also provide a Letter that the OEM has FM-200 Flow Calculation software suitable for Seamless Steel cylinder bided for as per the Bill of materials and that such Software shall be type approved by FM / UL / VdS / LPC.

The Storage Container offered shall be of Seamless type, meant for exclusive use in

FM- 200 systems, with VdS/FM/UL/LPC/CNPP component approval. Welded cylinders are not permitted.

The Seamless storage cylinder shall be approved by Chief Controller of Explosives, Nagpur and shall have NOC from CCoE, Nagpur for import of the same. Documentary evidence to be provided for earlier imports done by the bidder.

The FM-200 valve should be Differential Pressure Design and shall not require an Explosive / Detonation type Consumable Device to operate it.

The FM-200 Valve operating actuators shall be of Electric (Solenoid) type, and it should be capable of resetting manually. The Valve should be capable of being functionally tested for periodic servicing requirements and without any need to replace consumable parts.

The individual FM-200 Bank shall also be fitted with a manual mechanism operating facility that should provide actuation in case of electric failure.

The system flow calculation is to be carried out on certified software, suitable for the Seamless Steel Cylinder being offered for this project. Such system flow calculations shall be also approved by VdS / LPC/ UL / FM.

The system shall utilize 25 Bar / High pressure (362 psi) technology that allows for a higher capacity to overcome frictional losses and allow for higher distances of the agent flow; and also allow for better agent penetration in enclosed electronic equipments such as Server Racks/ Electrical Panels etc.

The designer shall consider and address possible Fire hazards within the protected volume at the design stage. The delivery of the FM-200 system shall provide for the highest degree of protection and minimum extinguishing time. The design shall be strictly as per NFPA standard NFPA 2001.

The suppression system shall provide for high-speed release of FM-200 based on the concept of total Flooding protection for enclosed areas. A Uniform extinguishing concentration shall be 7% (v/v) of FM-200 for 21 degree Celsius or higher as recommended by the manufacturer.



The system discharge time shall be 10 seconds or less, in accordance with NFPA standard 2001.

Sub floor and the ceiling void to be included in the protected volume.

The FM-200 systems to be supplied by the bidder must satisfy the various and all requirements of the Authority having Jurisdiction over the location of the protected area and must be in accordance with the OEM‘s product design criteria.

The detection and control system that shall be used to trigger the FM-200 suppression shall employ cross zoning of photoelectric and ionization smoke detectors. A single detector in one zone activated, shall cause in alarm signal to be generated. Another detector in the second zone activated, shall generate a predischarge signal and start the pre-discharge condition.

The discharge nozzles shall be located in the protected volume in compliance to the limitation with regard to the spacing, floor and ceiling covering etc. The nozzle locations shall be such that the uniform design concentration will be established in all parts of the protected volumes. The final number of the discharge nozzles shall be according to the OEM‘s certified software, which shall also be approved by third party inspection and certified such as UL / FM / VdS / LPC.

The Cylinder shall be equipped with differential pressure valves and no replacement parts shall be necessary to recharge the FM-200 containers.

FM-200 shall be discharged through the operation of an Electric (solenoid) operated device or pneumatically operated device, which releases the agent through a differential pressure valve.

The bidder shall provide all documentation such as Cylinder Manufacturing Certificates, Test and Inspection Certificates and Fill Density Certificates.

The FM-200 discharge shall be activated by an output directly from the `FM-200‘ Gas

Release control panel, which will activate the solenoid valve. FM-200 agent is stored in the container as a liquid. To aid release and more effective distribution, the container shall be super pressurized to 600 psi (g) at 21°C with dry Nitrogen.

The releasing device shall be easily removable from the cylinder without emptying the

cylinder. While removing from cylinder, the releasing device shall be capable of being operated, with no replacement of parts required after this operation.

Upon discharge of the system, no parts shall require replacement other than gasket, lubricants, and the FM-200 agent. Systems requiring replacement of disks, squibs, or any other parts that add to the recharge cost will not be acceptable.

The manual release device fitted on the FM-200 Cylinder(s) shall be of a manual lever type and a faceplate with clear instruction of how to mechanically activate the system.



In all cases, FM-200 cylinders shall be fitted with a manual mechanical operating facility that requires two-action actuation to prevent accidental actuation.

FM-200 storage cylinder valve shall be provided with a safety rupture disc. An increase in internal pressure due to high temperature shall rupture the safety disc and allow the content to vent before the rupture pressure of the container is reached.

The contents shall not be vented through the discharge piping and nozzles.

FM-200 containers shall be equipped with a pressure gauge to display internal

pressure.

Brass Discharge nozzles shall be used to disperse the `FM-200‘. The nozzles shall be brass with female threads and available in sizes as advised by the OEM system manufacturer. Each size shall come in two styles: 180° and 360° dispersion patterns.

All the Major components of the FM-200 system such as the Cylinder, Valves and

releasing devices, nozzles and all accessories shall be supplied by one single manufacturer under the same brand name.

Manual Gas Discharge stations and Manual Abort Stations, in conformance to the requirements put forth in NFPA 2001 shall be provided.

Release of FM-200 agent shall be accomplished by an electrical output from the FM- 200 Gas Release Panel to the solenoid valve and shall be in accordance with the requirements set forth in the current edition of the National Fire Protection Association Standard 2001. 2.3.1.6.2 Specification for FM 200 gas based fire suppression system 2.3.1.6.2.1 Introduction: FM 200 is one of the clean agents to replace Halon - 1301 in total flooding applications. FM 200 is the product from Great Lakes Chemical Corporation (GLCC). It is a member of the hydro fluorocarbon (HFC) family of chemicals and is referred to as HFC-227 ea. The most notable property of FM 200 is an Ozone depleting potential (ODP) of zero. 2.3.1.6.2.2 SPECIFICATION: The fire suppression system shall include and not be limited to gas release control panel, CCE approved seamless cylinders, discharge valve (with solenoid or pneuma -tic actuator) as the case may be, discharge pipe, non-return valve and all other accessories required to provide a complete operation system meeting applicable requirements of NFPA 2001 or ISO standards and installed in compliance with all applicable requirements of the local codes and standards. The system design should be based on the specifications contained herein, NFPA 2001 & in accordance with the requirements specified in the design manual of the agent. The bidder shall confirm compliance to the above along with their bid.



2.3.1.6.2.3 Design and Engineering: FM 200 systems shall be designed taking the minimum design concentration of 6.25% (0.485 gm/m3) as applicable to class ‗A‘ & ‗C‘ risks. The system design must consider the limitations caused by the void height. It should also consider temperature in the void. The qualifying bidder should clearly indicate the qty. of the gas in Kgs. to be used for the system. All voids within each hazard shall be discharged simultaneously. Each hazard shall have an independent system, unless otherwise specifically stated, when a centralized system with directional valves can be used. FM 200 systems shall have a working pressure of 25 bar. A fill density between 0.56 Kg / lt. to 0.85 Kg/lt. should be considered for the agent to be discharged within the specified time of 10 seconds maximum. The system engineering company should carry out the piping Isometric design and validate the same with a hydraulic flow calculation generated by using the agent's design software. The appropriate fill density shall be arrived based on the same. The design & calculation shall be checked & certified by Manufacturer. The calculation is the only guarantee that the system will work, provided the system is installed exactly as per the design. The contractor has to take into consideration the routing available while designing the pipe network. A certification (from the manufacturer of the agent or their direct distributor) on the authenticity with gas chromatography and quality of the agent filled in the system procured should be submitted by the system engineering company. 2.3.1.6.2.4 Refilling and Maintenance: In case of any leakage or accidental discharge of the agent, it should be possible to refill the cylinders in India itself. The contractor should indicate the source of refilling and time that will be taken for refilling and replacement. 2.3.1.6.2.5 Discharge Time: As gas has to be fully discharged within 10 seconds for effective quenching of fire as per the relevant standards, the contractor has to ensure that the design meets this requirement. Once the discharge takes place there should be warning signs restricting personal from entering the protected area until the gas has been cleared from the area. 2.3.1.6.2.6 Materials and Equipments: All materials and equipments shall be from approved manufacturers and shall be suitable for the performance of their respective functions. The cylinders should be complete with all accessories. The contractor shall indicate the dimensions of the cylinders required for each area while quoting. 2.3.1.6.2.7 Cylinder: The cylinder shall be high pressure, seamless steel gas cylinder, flat type, concave bottom as per IS 7285 complete with neck ring welded and cylinders without CCE approval shall not be accepted. The maximum fill density of FM 200 in a cylinder shall not be less than 0.56 kg/lt. and not exceed 0.85 Kg/lt. of internal volume. Appropriate fill density shall be chosen based



on the cylinder location and piping retrofit. The hydraulic calculations should prove that the fill density is appropriate and total discharge will take place within 10 seconds. The cylinders shall be super-pressurized with dry nitrogen to 25 bar at 20°C. The cylinder shall be capable of withstanding any temperature between -30° C and 70°C. Cylinder shall be mounted according to manufacturer recommendations. The cylinder shall withstand Hydrostatic test pressure up to 250 bar and maximum working pressure at 15°C shall be 150 bar. The discharge valve shall be approved or listed for use with FM 200. All the gaskets, O-ring, sealant and other valve component shall be constructed of materials compatible with the clean agent. The system should be engineered using hardware approved for use with FM 200 systems. This would include main discharge valve, solenoid, check valve / non-return valve and pneumatic actuators. 2.3.1.6.2.8 Pipes & Fittings: All Pipes shall be of ASTM - A-106, Gr: B, schedule - 40 seamless mild steel pipes and fittings shall be as per ASTM-A-105 standard. 2.3.1.6.2.9 Discharge Nozzle: Nozzle shall control the flow of FM 200 to ensure high velocity, proper mixing in the surrounding air and uniform distribution of the agent throughout the enclosure. The number of nozzles and their positions must be chosen so that the design concentration is maintained everywhere in the enclosure. Nozzle shall be located where they can be adequately supported on walls, ceiling or structural members. Software generated calculation supporting the nozzle design shall be submitted by the successful bidder before signing of contract. 2.3.1.6.2.10 Documentation: The system engineering company should prepare & submit along with the bid documents, the piping Isometric drawing and support the same with a hydraulic flow calculation generated by using the agent's design software. The calculations shall validate the fill density assumed by the bidder. The bidder shall submit copies of the datasheets of the hardware used in the system. The bidder shall also submit copy of CCE approval letter for the cylinder proposed to be used. These documents shall be attached to the bid. The bidder shall also submit calculations to evidence the qty of agent considered for the system. The qualifying bidder must submit, along with the supply invoice, a certificate of authenticity, for the agent from the system engineering company duly checked and verified by distributor. 2.3.1.7 Water Leakage Detection (WLD): Water Leak Detection System shall have water leak cable sensor to detect single or multiple zones of water leaks runs around the perimeter of the server room where mission-critical equipment is being maintained. It requires minimum 15 sets of 10 meter Cables (hydro–wire)



and 15 meter to cover entire perimeter of the server room, Network Room and electric room of the proposed DC/ DR. 2.3.1.7.1 Water Leakage Prevention System: The water leak detector shall be commissioned to detect any seepage of water into the critical area and alert for such leakage. It shall consist of after leak detection cable and an alarm module. The cable shall be installed in the ceiling & floor areas around the periphery. Water Leak Detection system should be for the Server and Network room Areas to detect and water flooding below the floor of the DC/DR. Water Leak Detection System should be wire based solution with alarm; the wire needs to lay in DC/DR surrounding the PAC units, which is the probable source of water leakage. The system consist of intelligent cable sensor to detect single or multiple water leaks in a specific area or areas in conjunction with a zone control panel. Companies typically divide a visible area into several zones and monitor each zone using a multi-zone control panel. The sensing cable is placed on the floor or the sub-floor around the potential leak sources, with each cable monitoring one zone. This allows each zone's sensitivity to be adjusted. If water or other conductive liquids contact the cable anywhere along its length, the control panel annunciates the water leak and the zone in which the leak is located. 2.3.1.7.2 Technical Compliance for Water Leak Detection: The water leak detector shall be installed to detect any seepage of water into the critical area and alert the Security Control Room for such leakage. It shall consist of water leak detection cable and an alarm module. The cable shall be installed in the ceiling & floor areas around the periphery.

Water Leak Detection system should be for the Server and Network room Areas to detect and water flooding below the floor of the DC/DR.

Water Leak Detection System should be wire based solution with alarm; the wire needs

to lay in DC/DR surrounding the PAC units, which is the probable source of water leakage. Supply Voltage: 230Vac @ 50Hz Supply current 50mA max. Output 12A @ 250Vac Response time <1 sec. after exposure Electrical Terminals for 0.5-2.5 Sq.mm cable Connections Rising cage

LED Status indication for: Error condition Input sensitivity Relay output mode Learning Mode Alarm hysteresis Dependent on sensitivity



Audible alarm output [email protected] @ 10cm

Ambient: Temperature -10 to 50°C RH 0-80% non-condensing Material PVC Twisted pair with stainless 316 elements Max. sensor cable length 200m (with leader cable) Dimensions 72 x 64 x 55mm

2.3.1.8 Rodent Repellant System: The Rodent Repellent system shall be deployed for both below false flooring & above false ceiling in the entire area of DC/DR. The UV transducers shall be placed at interval of 200-300 Sq.ft depending on the presence of UV absorption materials intervening between the transducers. The optimal number of transducers shall be deployed cartering to the entire area of DC/DR. Rodent Repellent are electronic transmitters of high frequency sound waves above 20 KHz frequency in the upper limit of the hearing range of the human ear. They emit intensive sound at high decibel levels (sound pressure) that is audible and painful to pests, but is inaudible and harmless to humans. The pests usually leave the area being protected by ultrasound. They do not get killed. The system is designed for server room and Transducers which emit UHF sound waves are placed in the desired location to cover the entire room including the false ceiling and false flooring area. These transducers are connected to the main controller which controls the entire operation of the system. 2.3.1.8.1 Technical Compliance for Rodent Repellent: The entry of Rodents and other unwanted pests shall be controlled using non-chemical, non-toxic devices. Ultrasonic pest repellents shall be provided in the false flooring and ceiling to repel the pests without killing them. • Configuration : Master console with necessary transducer • Operating Frequency : Above 20 KHz (Variable) • Sound Output : 50 dB to 110 dB (at 1 meter) • Power output : 800 mW per transducer • Power consumption : 15 W approximately • Power Supply : 230 V AC 50 Hz • Mounting : Wall / Table Mounting 2.3.1.9 Public Addressable (PA) Systems: The Proposed DC/ DR shall have min of 6 Watt speakers with inbuilt 100V Line Matching Transformer, wide opening angle, optimized for music & speech applications with mounting clamps are proposed to be strategically placed to ensure maximum audible sound dispersion for the entire DC/ DR. The proposed design also envisages Central Control Station equipped



with Priority Module, Digital Voice Recorder and 6 Zone Announcement Console with MIC and rack mounted booster amplifier. 2.3.1.9.1 Ceiling Mounted Speakers:

The speaker shall be flush mounted in the False Ceiling cavity and shall be suitable for a general purpose applications such as Public Address, Music Reproduction etc., The Speaker shall consists of a single piece 6 W dual cone loudspeaker, frame, a 100 V line matching transformer and a circular metal grill. The speaker shall come with a screw terminal block for line matching transformer connection. The speaker shall be screw mounted to the ceiling and it shall have a protective steel fire cover to prevent entry of fire into the false ceiling void area through the speakers. The speakers shall also be provided with Volume Control facility, wherever required. 2.3.1.9.2 Wall Mounted Speakers:

The speaker shall be wall mounted type and shall be suitable for a general purpose applications such as Public Address, Music Reproduction etc., The Speaker shall consists of a wall mount enclosure, 6 W high quality speakers and a 100 V line matching transformer. The speaker shall come with a screw terminal block for line matching transformer connection for full load and shall also have a provision for secondary tapings. Connectors shall be provided on the rear of the speakers for cable connections. There shall be a uniformity of sound both in loudness & quality. The speaker shall be designed to minimize reverberation effects, howling etc., caused due to reflection of sound from hard surfaces. 2.3.1.9.3 Booster Amplifier: The main function of the power amplifier shall be the amplification of audio signals for the speakers. It shall be possible to select the output voltage between 100V, 70V or 50V by changing outputs The Booster mono amplifiers shall be capable of operating for speech and music applications. They shall be mounted on a suitable 19‖ Euro Racks. The amplifier shall cum with an operating console which shall connect to a table top stem type microphone. The system shall necessarily be capable of taking a voice feed from the builder PA. The power amplifiers shall have adequate continuous power output to meet the requirement of the configuration. The unit shall be capable of delivering the rated output watts with less than 0.1% harmonic distortion in the design band width. The amplifier shall have a broad band frequency response of 50 Hz to 20 KHz. The output voltage and impedance shall meet with the system requirements. Amplifiers shall be protected against over loads and output shorts and a special thermal overload on the heat sink. Additionally, all booster amplifiers have an overheat protection circuit that switches off the power stage if the internal temperature reaches a critical limit due to poor ventilation or overload. A temperature-controlled fan shall be provided to ensure high reliability at high output power and low acoustic noise at lower power output. A table top goose neck microphone is connected to the amplifier in each Module. balanced input and a loop-through connector shall



be available for easy connection of multiple booster amplifiers to increase the available output power. The power amplifier shall obtain two balanced inputs with priority control, each with a loop-through facility. This allows for easy and automatic switching between e.g. a local music source and a priority announcement from a remote system. It shall be possible to connect multiple Booster amplifiers for single zone by using just loop through connectors and it shall also be possible to connect one amplifier to multiple zones through router. 2.3.1.9.4 Cables: Cabling between UPS to the System controllers/call stations shall be in the scope the qualifying bidder. The 2 Core 24/0.2 ATC twin twisted shielded over all PVC sheathed speaker cable connecting the Speakers to the Controllers shall be PVC insulated copper, multi strand, Shielded (armoured or unarmoured) cables meeting the cabling requirement of the system manufacturer.

2.3.1.9.5 Technical Compliance for Public Address System: The PA system is required for:

Making public announcement from the Control Room and Facility Manager‘s room. Clear and crisp announcement should reach to the entire Facility area.

Microphones should be provided to make announcements / respond to announcement from the designated location within the Facility.

To play light music if required. Rated voltage 100 V AC Rated impedance 1667 Ohms Effective frequency range 70 to 18000 Hz Power handling capacity Min 6 watts with a tapping facility for 1.5,3,6 Watts Connection 2 pole Push Connection Operating Temperature -25°C to +55°C Rated voltage 100 V AC Rated impedance ~ 1667 Ohms Effective frequency range 75 to 18000 Hz Opening angle(1 KHz/ 4 KHz) 100°/ 80° Power handling capacity Min 6 watts with a tapping facility for 1.5, 3, 6 Watts Connection 3-way screw connector Operating Temperature -25°C to +55°C EMC emission EN 55103-1 & EN 55103-2 Performance

Frequency response 50 Hz – 20 kHz (+1/-3 dB, @ -10 dB ref. rated output) Distortion <1% @ rated output power, 1 kHz



Inputs Line input (3-pin XLR, 6.3mm phone jack,

balanced) Sensitivity 1 V Impedance 20 kOhm CMRR >25 dB (50 Hz-20 kHz) Line input 1, 2 (3-pin XLR, balanced) CMRR >25 dB (50 Hz-20 kHz) 100V input (Screw, unbalanced) Sensitivity 100 V Impedance 330 kOhm

Outputs Line loop through output (3-pin XLR, 6.3mm phone jack, balanced)

Nominal level 1 V Impedance direct connection to line input

Line loop through output 1,2 (3-pin XLR, balanced)

Impedance direct connection to line input Loudspeaker outputs (Screw, floating) Output power @ 24 V Battery operation -1 dB ref. rated power.

Environmental Conditions Operating temperature range min -10 to +550C Relative humidity min 90%

2.4 Integrated Building Management System (BMS): 2.4.1 General: The BMS Room is so located so as to oversee the Server room through a Fire resistant Vision panel. BMS room shall house all the panels for the BMS components including Closed Circuit Television, Fire Alarm, Fire Detection & Suppression System, Access Control etc Time synchronization solution shall also be implemented by using GPS Clock along with BMS solution and all the Data Centre System shall be integrated with Time synchronsiation.

The building management system shall be implemented for effective management, monitoring and Integration of various components like HVAC systems, Access Control systems, fire detection system, Closed Circuit Television etc. The BMS shall perform the following general functions including but not limited to: • Building Management & Control • Data Collection & archival • Alarm Event & Management



• Trending • Reports & MIS Generation • Maintenance & Complaint Management The scope of work shall include designing, supplying and installing of Building management (Automation) System. The BMS shall be a MODBUS/BACNET based Integrated Building Management system. All building controllers, application controllers, and all Input/output devices shall communicate using the protocols and network standards as defined by ANSI/ASHRAE Standard. The work shall consist of furnishing all materials, equipment's and appliances necessary to install the said system, complete with Sensors, Direct Digital Controllers, Communication Controllers and Supervisory Software complete with necessary software/hardware support for interfacing with other systems. It shall include laying of cabling duct, conduits and power supply etc., necessary for installation of the system with supply of appropriate type products as indicated in the specification and Bill of Quantities. The controller shall be 32 bit based Microprocessor Controller and shall sit directly on the TCP / IP network. The Controller shall be Web Based, Web Enabled, Real Time Clock, and Web Browser with Communication speed min of 10 Mbps. Agency shall design & provide a full Building automation system on the basis of truly distributed intelligence and shall comprise of the following general functional sub systems.

The Integrated Building Management System is designed on a truly distributed intelligence and shall comprise of the following functional sub systems but not limited to

DG sets( MODBUS/BACNET on RS 485)

There will be integration of the DG system status, fuel tank level, fuel pump Operation, Panel with the BMS system. Necessary provisions to be made in respective areas.

DG Set on MODBUS/BACNET Protocol with RS 485 Communication Port

Heating Ventilation & Air Conditioning (RS 485 with MODBUS/BACNET protocol) Precision AC Units - Temperature monitoring and controls at all specified

positions/locations

Energy Management ( MODBUS/BACNET on RS 485)

Energy Meter on MODBUS/BACNET Protocol with RS 485 Communication Port LT Panel Energy Monitoring

UPS Monitoring (MODBUS/BACNET on RS 485) Efficiency (at various loads, Overall Efficiency, etc)



Control Systems Integration (MODBUS/BACNET on RS 485)

Fire Alarm System Integration (which in turn is internally connected with Aspiration Smoke Detection, Water Leak Detection & Gas Based Suppression System)

There should be a provision for integrating the BMS & Enterprise Management System (EMS) to render a consolidated SLA report in the prescribed format. The qualifying bidder has to ensure by deploying the necessary software/hardware tool for generating the consolidated report.

The Integrated building management system shall be commissioned for effective management, monitoring and Integration of various physical/support infrastructures such as HV/LV panels, relays, transformers, DG sets, DC panel, UPS, PAC, Fire alarm, Gas Suppression (FM 200), Water Leakage fire detection system. The system shall comprise of all materials, equipment's and appliances necessary to commission & operate the said system, complete with Sensors, Direct Digital controllers, Communication Controllers and Supervisory Software complete with necessary software/hardware support for interfacing with other systems, cabling duct, conduits and power supply etc., The BMS shall be comprised of a network of interoperable stand-alone digital controllers, a computer system, graphical user interface software, printers, network devices, valves, BTU Meters, Temperature & Pressure sensors, and other devices as specified herein. It shall be a PC based system with web based operator interface and shall combine latest state of the art technology with simple operating techniques. All systems and software shall be Year 2000 compliant and shall be supported by compliance documentation from the manufacturer. The installed system shall provide secure password access to all features, functions and data contained in the overall IBMS. The system will consists of flat open architecture that utilizes MODBUS/BACNET talk protocol between all controlled and controlling devices. The controller shall have resident real time clock, peer to peer communication and minimum 32 bit processor. The entire BMS shall be comprised of a network of interoperable, stand-alone digital controllers communicating via MODBUS/BACNET RS-485 communication protocols to a Network Area Controller (NAC). 2.4.2 Specification Nomenclature Acronyms used in this specification are as follows: TCS - Temperature Control System NAC - Network Area Controller DDC - Direct Digital Controller GUI - Graphical User Interface WBI - Web Browser Interface POT - Portable Operator‘s Terminal



PMI - Power Measurement Interface LAN - Local Area Network WAN - Wide Area Network OOT - Object Oriented Technology 2.4.3 Open, Interoperable, Integrated Architectures: This architecture shall provide a peer-to-peer networked, stand-alone, distributed control system with the capability to integrate MODBUS technology, OPC, and other open and proprietary communication protocols in one open, interoperable system. The software shall employ object-oriented technology (OOT) for representation of all data and control devices within the system. Physical connection of MODBUS/BACNET devices shall be via Ethernet (MODBUS/BACNET IP and/or RS-485 (MODBUS/BACNET RTU) as specified. The software shall have the ability to access all data using standard GUI without requiring proprietary operator interface and configuration programs. This data shall reside on predefined database server. Systems requiring proprietary database and user interface programs shall not be acceptable. 2.4.4 Third Party Integrations: The System shall be open architecture & support based for industry standard integrations with third party mechanical & electrical sub-systems. The same shall be capable to support multiple protocols over TCP/IP Network allowing many equipment items to be connected directly to the main backbone IT protocol. The system shall allow for seamless interconnection to equipment using MODBUS/BACNET. The above utility system shall be incorporated for options such as alarming, automatic demand reduction and utility bills. It should control everything from mission critical cooling to emergency back-up generators. Features like ―Holiday‖ schedule to save energy in different space of the building. A hierarchical topology is required to assure reasonable system response times and to manage the flow and sharing of data without unduly burdening the customer‘s internal Intranet network. Systems employing a ―flat‖ single tiered architecture shall not be acceptable. Maximum acceptable response time from any alarm occurrence (at the point of origin) to the point of annunciation shall not exceed 5 seconds for network connected user interfaces. Maximum acceptable response time from any alarm occurrence (at the point of origin) to the point of annunciation shall not exceed 60 seconds for remote or dial-up connected user interfaces.



2.4.5 Networks The Local Area Network (LAN) shall be a minimum of 100 Megabits/sec Ethernet network supporting MODBUS/BACNET, Java, XML, HTTP, and SOAP for maximum flexibility for integration of building data with enterprise information systems and providing support for multiple Network Area Controllers (NACs), user workstations and, if specified, a local server. 2.4.6 Network Area Controller (NAC) The Network Area Controller (NAC) shall provide the interface between the LAN or WAN and the field control devices, and provide global supervisory control functions over the control devices connected to the NAC. It shall be capable of executing application control programs to provide:

Calendar functions Scheduling Trending

Alarm monitoring and routing Time synchronization Integration of MODBUS/BACNET controller data Network Management functions for all MODBUS/BACNET based devices

The NAC shall provide multiple user access to the system and support for ODBC or SQL. A database resident on the NAC shall be an ODBC-compliant database or must provide an ODBC-data access mechanism to read and write data stored within it.

2.4.7 Event Alarm Notification and Actions:

The NAC shall provide alarm recognition, storage, routing, management, and analysis to supplement distributed capabilities of equipment or application specific controllers.

The NAC shall be able to route any alarm condition to any defined user location whether connected to a local network or remote via dial-up telephone connection, or wide-area network.

Alarm generation shall be selectable for annunciation type and acknowledgement requirements including but limited to:

To alarm Return to normal To fault

Provide for the creation of a minimum eight of alarm classes for the purpose of routing types and or classes of alarms, i.e.: security, HVAC, Fire, etc.

Provide timed (schedule) routing of alarms by class, object, group, or node.



Provide alarm generation from binary object ―runtime‖ and /or event counts for equipment maintenance. The user shall be able to reset runtime or event count values with appropriate password control.

Control equipment and network failures shall be treated as alarms and annunciated.

Alarms shall be annunciated in any of the following manners as defined by the TNEB.

Screen message text

Email of the complete alarm message to multiple recipients. Provide the ability to route and email alarms based on: Day of week/Time of Day/Recipient

Alarm actions may be initiated by user defined programmable objects created for that purpose.

Defined users shall be given proper access to acknowledge any alarm, or specific types or classes of alarms defined by the user.

A log of all alarms shall be maintained by the NAC and shall be available for review by TNEB.

Provide a ―query‖ feature to allow review of specific alarms by user defined parameters.

A separate log for system alerts (controller failures, network failures, etc.) shall be

provided and available for review by the user.

An Error Log to record invalid property changes or commands shall be provided and available for review by the user.

2.4.8 Data Collection and Storage: • The NAC shall have the ability to collect data of the defined objects and store this data for

future use. • The data collection shall be performed by log objects, resident in the NAC that shall have, at

a minimum, the following configurable properties:

Designating the log as interval or deviation. For interval logs, the object shall be configured for time of day, day of week and

the sample collection interval.

For deviation logs, the object shall be configured for the deviation of a variable to a fixed value. This value, when reached, will initiate logging of the object.



For all logs, provide the ability to set the maximum number of data stores for the log and to set whether the log will stop collecting when full, or rollover the data on a first-in, firstout basis.

Each log shall have the ability to have its data cleared on a time-based event or

by a user-defined event or action.

All log data shall be stored in a database in the NAC and the data shall be accessed from a standard Web browser or System.

All log data shall be available to the user in the following data formats but not limited to HTML, XML, Plain Text, comma or tab separated values

The NAC shall have the ability to archive its log data either locally (to itself) or other NAC on the network. Provide the ability to configure the following archiving properties, at a minimum:

Archive on time of day Archive on user-defined number of data stores in the log (buffer size) Archive when log has reached its user-defined capacity of data stores Provide ability to clear logs once archived

2.4.9 Audit Log:

Provide and maintain an Audit Log that tracks all activities performed on the NAC. Provide the ability to specify a buffer size for the log and the ability to archive log

based on time or when the log has reached its user-defined buffer size.

Provide the ability to archive the log locally (to the NAC), to another NAC on the network, or to a server. For each log entry, provide the following data:

Time and date User ID Change or activity: i.e., Change set point, add or delete objects, commands,

etc. 2.4.10 Database Backup and Storage:

The NAC shall have the ability to automatically backup its database. The database shall be backed up based on a user-defined time interval.

Copies of the current database and at the most recently saved database shall be stored in the NAC. The age of the most recently saved database is dependent on the user-defined database save interval.

The NAC database shall be stored, at a minimum, in XML format to allow for user viewing and editing, if desired. Other formats are acceptable as well, as long as XML format is supported.



2.4.11 Direct Digital Controller:

Complementing existing standard protocols, the controller shall be uniquely identified over the network. This facility of online network device search and simplify reconfiguration. All configurations changes are protected via password setting, either through standard network protocol.

All related information/helps are available through the controller. Information such as

registers details, wiring diagram, device specification and etc are provided to assist the user.

A Reset Switch has been proposed for the system reset without power removal.

The Broadcast Switch has been proposed which allows the controller to broadcast itself to the network during installation and implementation.

Network communication and operation parameters can be changed via RS485/Ethernet

with the built-in boot-loader and terminal program

All I/Os should be connected via field removable terminal block connectors for easy maintenance. The controller casing should fits standard DIN rail mounting for easy fixing and removing.

2.4.12 Graphical User Interface Software:

The GUI shall run on preferably on an Open Source environment. The GUI shall employ browser like functionality for ease of navigation. It shall include a tree view (similar to Windows Explorer) for quick viewing of, and access to, the hierarchical structure of the database. In addition, menu pull downs, and toolbars shall employ buttons, commands and navigation to permit the operator to perform tasks with a minimum knowledge of the HVAC Control System and basic computing skills. These shall include, but are not limited to, forward/backward buttons, home button, and a context sensitive locator line (similar to a URL line), that displays the location and the selected object identification. Real-Time Displays. The GUI, shall at a minimum, support the following graphical features and functions: Graphic screens shall be developed using any drawing package capable of generating a GIF, BMP, or JPG file format. Use of proprietary graphic file formats shall not be acceptable. In addition to, or in lieu of a graphic background, the GUI shall support the use of scanned pictures. Graphic screens shall have the capability to contain objects for text, real-time values, animation, color spectrum objects, logs, graphs, HTML or XML document links, schedule objects, hyperlinks to other URL‘s, and links to other graphic screens.



Graphics shall support layering and each graphic object shall be configurable for assignment to a layer. Modifying common application objects, such as schedules, calendars, and set points shall be accomplished in a graphical manner. Schedule times will be adjusted using a graphical slider, without requiring any keyboard entry from the operator. Holidays shall be set by using a graphical calendar without requiring any keyboard entry from the operator. Commands to start and stop binary objects shall be done by right-clicking the selected object and selecting the appropriate command from the pop-up menu. No entry of text shall be required. Adjustments to analog objects, such as set points, shall be done by right-clicking the selected object and using a graphical slider to adjust the value. No entry of text shall be required. 2.4.13 System Configuration: At a minimum, the GUI shall permit the operator to perform the following tasks, with proper password access: • Create, delete or modify control strategies. • Add/delete objects to the system. • Tune control loops through the adjustment of control loop parameters. • Enable or disable control strategies. • Generate hard copy records or control strategies on a printer.

• Select points to be alarmable and define the alarm state.

Select points to be trended over a period of time and initiate the recording of values automatically. 2.4.14 On-Line Help: Provide a context sensitive, on-line help system to assist the operator in operation and editing of the system. On-line help shall be available for all applications and shall provide the relevant data for that particular screen. Additional help information shall be available through the use of hypertext. All system documentation and help files shall be in HTML format. 2.4.15 Security: Each operator shall be required to log on to that system with a user name and password in order to view, edit, add, or delete data. System security shall be selectable for each operator. The system administrator shall have the ability to set passwords and security levels for all other operators. Each operator password shall be able to restrict the operators‘ access for viewing and/or changing each system application, full screen editor, and object. Each operator shall automatically be logged off of the system if no keyboard or mouse activity is



detected. This auto log-off time shall be set per operator password. All system security data shall be stored in an encrypted format. 2.4.16 System Diagnostics: The system shall automatically monitor the operation of all workstations, printers, modems, network connections, building management panels and controllers. The failure of any device shall be annunciated to the operator. 2.4.17 Alarm Console: The system will be provided with a dedicated alarm window or console. This window will notify the operator of an alarm condition, and allow the operator to view details of the alarm and acknowledge the alarm. The use of the Alarm Console can be enabled or disabled by the system administrator. When the Alarm Console is enabled, a separate alarm notification window will supersede all other windows on the desktop and shall not be capable of being minimized or closed by the operator. This window will notify the operator of new alarms and un-acknowledged alarms. Alarm notification windows or banners that can be minimized or closed by the operator shall not be acceptable. 2.4.18 System Programming: The Graphical User Interface software (GUI) shall provide the ability to perform system programming and graphic display engineering as part of a complete software package. Access to the programming functions and features of the GUI shall be through password access as assigned by the system administrator. A library of control, application, and graphic objects shall be provided to enable the creation of all applications and user interface screens. Applications are to be created by selecting the desired control objects from the library, dragging or pasting them on the screen, and linking them together using a built in graphical connection tool. Completed applications may be stored in the library for future use. Graphical User Interface screens shall be created in the same fashion. Data for the user displays is obtained by graphically linking the user display objects to the application objects to provide ―real-time‖ data updates. Any real-time data value or object property may be connected to display its current value on a user display. Systems requiring separate software tools or processes to create applications and user interface displays shall not be acceptable. 2.4.19 Programming Methods: Provide the capability to copy objects from the supplied libraries, or from a user-defined library to the user‘s application. Objects shall be linked by a graphical linking scheme by dragging a link from one object to another. Object links will support one-to-one, many-to-one, or one-to-many relationships. Linked objects shall maintain their connections to other objects regardless of where they are positioned on the page and shall show link identification for links to objects on other pages for easy identification. Links will vary in color depending on



the type of link; i.e., internal, external, hardware, etc. Configuration of each object will be done through the object‘s property sheet using fill-in the blank fields, list boxes, and selection buttons. Use of custom programming, scripting language, or a manufacturer-specific procedural language for configuration will not be accepted. The software shall provide the ability to view the logic in a monitor mode. When on-line, the monitor mode shall provide the ability to view the logic in real time for easy diagnosis of the logic execution. When off-line (debug), the monitor mode shall allow the user to set values to inputs and monitor the logic for diagnosing execution before it is applied to the system. All programming shall be done in real-time. Systems requiring the uploading, editing, and downloading of database objects shall not be allowed. The system shall support object duplication within a customer‘s database. An application, once configured, can be copied and pasted for easy re-use and duplication. All links, other than to the hardware, shall be maintained during duplication. 2.4.20 Object Libraries: A standard library of objects shall be included for development and setup of application logic, user interface displays, system services, and communication networks. The objects in this library shall be capable of being copied and pasted into the user‘s database and shall be organized according to their function. In addition, the user shall have the capability to group objects created in their application and store the new instances of these objects in a user-defined library. In addition to the standard libraries specified here, the supplier of the system shall maintain an on-line accessible library, available to all registered users to provide new or updated objects and applications as they are developed. 2.5.1 Precision Air Conditioning (PAC):

2.5.1.1 General: The Data Centre/ Disaster Recovery Centre shall be provided with fully redundant Microprocessor based Precision Air conditioning system. Cool air feed to the DC/ DR shall be bottom-charged or downward flow type using raised floor as supply plenum using perforated aluminum tiles for Air flow distribution. The return air flow shall be through false ceiling to cater to the natural upwardly movement of hot air. Cooling shall be done by the Precision Air-Conditioning system only. Forced cooling using Fans on False floor etc is not acceptable. A/C should be capable of providing sensible cooling capacities at design ambient temperature & humidity with adequate airflow. The PAC should be capable to be integrated with the Building management.



System for effective monitoring. The Agency will be required to design, supply, transport, store, unpack, erect and test the successful commissioning and satisfactory completion of trial operations of the PAC systems for the Data Centre. This shall also include • Connecting the indoor unit with the mains electrical point. • Connecting indoor and outdoor units mechanically. • Connecting indoor and outdoor unit electrically. • Nitrogen pressure testing, triple vacuum, final gas charging. • Connecting the humidifier feed line with the point provided. • Connecting the drain line with the point provided. • Commissioning and handing over the unit to the customer. • Operation and routine maintenance training to two to three persons nominated by the

customer while commissioning the units at site. 2.5.1.2 Temperature Requirements: The environment inside the DC/DR shall need to be continuously maintained at 20 ±1° Centigrade. It is advised that the temperature and humidity be controlled at desired levels. The necessary alarms for variation in temperatures shall be monitored on a 24x7 basis and logged for providing reports. 2.5.1.3 Relative Humidity (RH) requirements: Ambient RH levels shall need to be maintained at 50% ± 5 non-condensing. Humidity sensors shall be deployed. The necessary alarms for variation in RH shall be monitored on a 24x7 basis and logged for providing reports. 2.5.1.4 Temperature & Relative Humidity Recorders: Temperature and Relative Humidity Recorders shall preferably be deployed for recording events of multiple locations within the DC/DR. Automatic recording of temperature and humidity using sensors located at various locations within the DC/DR is necessary. 2.5.1.5 Air quality levels: The DC/DR shall be kept at highest level of cleanliness to eliminate the impact of air quality on the hardware and other critical devices. The DC/DR shall be deployed with efficient air



filters to eliminate and arrest the possibility of airborne particulate matter which may cause air-flow clogging, gumming up of components, causing short-circuits, blocking the function of moving parts, causing components to overheat etc. Air filters shall be 95% efficiency & provide up-to 5 Micron particulate shall be deployed. 2.5.1.6 Additional Points: • The precision air-conditioners should be capable of maintaining a temperature range of 20

degree with a maximum of 1 degree variation on higher and lower side and relative humidity of 50% with a maximum variation of 5% on higher and lower side.

• The precision air-conditioners shall have 2 independent refrigeration circuits (each

comprising 1 no scroll compressors, refrigeration circuit and condensers) and dual blowers for flexibility of operations and better redundancy.

• The unit casing shall be in double skin construction on the side panels & single skin on the

front & back panels for longer life of the unit and low noise level. • For close control of the DC/DR environment conditions (Temp. and RH) the controller shall

have (PID) proportional integration and differential. • The precision unit shall be air cooled refrigerant based system to avoid chilled water in

critical space. • The internal rack layout design shall follow cold aisle and hot aisle concept as recommended

by ASHRAE. • The refrigerant used shall be environment friendly HFC, R-407-C/ equivalent in view of long

term usage of the data center equipments, availability of spares and refrigerant. • Fully Deployed Dynamic Smart Cooling with Auto sequencing Provision and Auto Power

Management Features. • The fan section shall be designed for an external static pressure of 25 Pa. The fans shall be

located downstream of the evaporator coil and be of the electronically commuted backward curved centrifugal type, double width, double inlet and statically and dynamically balanced. Each fan shall be direct driven by a high efficiency DC motor.

• The evaporator coil shall be A-shape coil Straight Slant coil (for down flow) incorporating

draw-through air design for uniform air distribution. The coil shall be constructed of rifled bore copper tubes and louvered aluminum fins, with the frame and drip tray fabricated from heavy gauge aluminum. Face area of coil shall be selected corresponding to air velocity not exceeding 2.5 m/sec.

• Dehumidification shall be achieved by either reducing effective coil area by solenoid valve

arrangement or using Dew point method of control. Whenever dehumidification is required,



the control system shall enable a solenoid valve to limit the exchange surface of the evaporating coil, thereby providing a lower evaporating temperature.

• The humidifier and heaters shall be a built in feature in each machine individually.

Humidification shall be provided by boiling water in a high temperature polypropylene steam generator. The steam shall be distributed evenly into the bypass airstreams of the environment control system to ensure full integration of the water vapor into the supply air without condensation. The humidifier shall have an efficiency of not less than 1.3 kg/kW and be fitted with an auto flush cycle activated on demand from the microprocessor control system. The humidifier shall be fully serviceable with replacement electrodes. Wastewater shall be flushed from the humidifier by the initiation of the water supply solenoid water valve via a U-pipe overflow system. Drain solenoid valves shall not be used. Microprocessor should be able to control the humidification and heating through suitable sensors.

• Microprocessor Controls: Following features should be displayed on the units Room temperature and humidity. Supply fan working status Condenser fans working status Electric heaters working status Humidifier working status Manual / Auto unit status Temperature set point Humidity set point Working hours of main component i.e. compressors, fans, heater, humidifier etc. Unit working hours Current date and time Type of alarm (with automatic reset or block) The last 10 intervened alarms

• The microprocessor should be able to perform following functions Testing of the working of display system Password for unit calibration values modification Automatic re-start of program Cooling capacity control Compressor starting timer Humidifier capacity limitation Date and time of last 10 intervened alarm Start / Stop status storage Random starting of the unit. Outlet for the connection to remote system Temperature and humidity set point calibration Delay of General Alarm activation Alarm calibration

• Following alarms shall be displayed on screen of microprocessor unit: Air flow loss



Clogged Filters Compressor low pressure Compressor high pressure Smoke - fire Humidifier Low water level High / Low room temperature High/Low room humidity Spare External Alarms Water Under floor

• The control system shall include the following settable features: Unit identification number Startup Delay, Cold start Delay and Fan Run on timers Sensor Calibration Remote shutdown & general Alarm management Compressor Sequencing Return temperature control Choice of Modulating output types

• The unit shall incorporate the following protections: Single phasing preventors Reverse phasing Phase imbalancing Phase failure Overload tripping (MPCB) of all components

The Precision Environmental Control Systems shall be Self contained factory assembled unit with Down flow Air delivery. The system shall have a total cooling capacity of 51 TR for Server Room Area and 10 TR for the Network & MUX Room is to be supplied with 415Volt, 3Phase and 50Hz electrical services. 2.5.1.7 PRODUCT

The frame shall be constructed of 2.5, 2.0 and 1.2 mm folded galvabond steel. The external panels shall be constructed of 1.2mm zinc coated sheet steel. Front, rear and end panels shall be fitted with 25 mm glass fibre insulation, fire rated to Australian Standard 1530 (indices 0,0,0,3). The cabinet shall be powder coated with and have a texture finish. The hinged front panels shall be removable and include captive ¼ turn fasteners. The cabinet shall be assembled with pop rivets providing ease of disassembly. 2.5.1.8 FILTRATION

The filter chamber shall be an integral part of the system and withdrawal from the front of the unit. Filtration shall be provided by deep V form G4 performance dry disposable media to ASI324.



2.5.1.9 FANS

The fan section shall be designed for 4400 L/s at an external static pressure of 25Pa. The fan shall be located downstream of the evaporator coil and be of the forward curved centrifugal type, double width, double inlet and statically and dynamically balanced to G6.3 DIN ISO 1940 part I. Each fan shall be separately driven by a high efficiency electric motor with an IP22 enclosure rating. The drive arrangement shall be self-tensioned and provide for belt replacement without the use of tools. The motor base plate shall include locators to ensure optimum axial alignment of the motor. 2.5.1.10 SCROLL COMPRESSOR

The compressor shall be of the high efficiency complaint scroll design, with E.E.R (Energy Efficiency Ratio) of not less than 11.1 BTUH/Watt (C.O.P (Coefficient of Performance) not less than 3.25) at ARI rating conditions. The compressor shall be charged with mineral oil and designed for operation on HCFC R22. 2.5.1.11 REFRIGERATION CIRCUIT

The refrigeration system shall be of the direct expansion type and incorporate one or more hermetic scroll compressors, complete with crankcase heaters. Cooling steps shall be a maximum of 50% of total unit cooling capacity for two compressor models. A hot gas bypass solenoid valve shall be used on single compressor models. The system shall include a manual reset high pressure control, auto reset low pressure switch, externally equalized thermal expansion valve, high sensitivity refrigerant sight glass, large capacity filter drier and charging/ access ports in each circuit. Each refrigeration circuit shall include rigidly mounted isolation valves in the discharge and liquid lines to aid servicing and installation (air cooled units only). 2.5.1.12 EVAPORATOR COIL

The evaporator coil shall be an A-coil configuration incorporating draw-through air design for uniform air distribution. The coil shall be constructed of rifled bore copper tubes and louvered aluminium fins, with the frame and drip tray fabricated from heavy gauge aluminium. All metal parts in contact with condensate shall be of the same material to prevent electrolytic corrosion. The drip trays shall ensure the collection of condensate and be accessible for cleaning. The cooling shall be a maximum of 4 rows and 55I fins per meter and the face velocity shall not be more than 2.5 m/s. 2.5.1.13 DEHUMIDIFICATION

Multiple Compressor Models A specific dehumidification cycle (split-liquid) shall operate by reducing the operating surface temperature in a section of one of the refrigeration coils by means of a solenoid valve in the liquid line. Full air flow of the unit will be maintained at all times to ensure consistent air distribution to the conditioned space.



2.5.1.14 REMOTE AIR COOLED CONDENSER

The Air cooled condenser shall be the low profile, weatherproof type incorporating high efficiency, direct drive, external rotor motors with axial blade fans. The condenser shall balance the heat rejection of the compressor at 40° C ambient. The condenser shall be constructed from heavy duty aluminium and corrosion resistant components. Heavy duty mounting legs and all assembly hardware shall be included. Condensers shall be suitable for 24 hours operation and be capable of providing vertical or horizontal discharge. The condenser shall be fully factory wired and require a 230 volt, single phase,50Hz electrical service. 2.5.1.15 HUMIDIFIER

Humidification shall be provided by boiling water in a high temperature polypropylene steam generator. The steam shall be distributed evenly into the bypass air stream of the environmental control system to ensure full integration of the water vapour in to the supply air without condensation. The humidifier shall be capable of providing steam per hour. The humidifier shall have an efficiency of not less than 1.3 kg/kW and be fitted with an auto flush cycle activated on demand from the microprocessor control system. The humidifier shall be fully serviceable with replaceable electrodes. Waste water shall be flushed from the humidifier by the initiation of the water supply solenoid valve via a U-pipe overflow system. Drain solenoid valves will not be used. The humidifier shall be type test certified for direct connection to portable water supplies in accordance with Australian Standard MP52. 2.5.1.16 ELECTRICAL HEATING

The electric heating elements shall operate at a heat density level not exceeding 60 kW/m2. The low watt density elements shall be of finned tubular steel construction finished in high temperature paint. The heating circuit shall include dual safety protection through loss of air and manual reset high temperature controls. 2.5.1.17 UNIT SIZE

The maximum foot print area of the unit shall not exceed:- 1.45 m2 above 35 and up to 70 kW The unit shall require front access only for routine service and installation work. 2.5.1.18 UNIT CONTROLLER

The unit controller shall be microprocessor based and include a large 115 x 65mm (240 x 128 pixel) LCD backlit graphic display for clear visibility of text and graphics. The display and control buttons shall be accessible from the front without removing any external panels. The controller shall feature ISP (In-System-Programming) technology to support program upload via a PC.



Control strategies shall be P-I-D with dew point compensation for accurate temperature and humidity control. A selection of return or supply air control shall be provided to suit the application. The controller shall have a user-friendly menu driven interface with supporting help screens and shall use multi-protocol data communications. Access to the controller setting shall be protected with three levels of passwords to prevent against unauthorized access. In normal operating mode the main screen shall display unit number, temperature and relative humidity set points and actual, graphs, time, date and operating status. Dynamic icons shall identify the system operating mode. A 48 hour real time log of temperature and humidity data shall be retained by the control system. All parameters and data shall be protected in memory by an onboard battery. An EIA-232 communications interface shall provide the capability of remote monitoring with the option of an EIA-485 interface on a 2 or 4 wire connections. 2.5.1.19 CONTROL

The control system shall allow programming of the following conditions: - Temperature set point : 17 to 32° C (return), 10 to 16° C (supply) - Humidity set point : 35 to 65% RH (return) - High temperature alarm : 15 to 35° C - Low temperature alarm : 5 to 35° C - High humidity alarm : 30 to 80% RH - Low humidity alarm : 10 to 70% RH 2.5.1.20 ALARMS The microprocessor shall activate an audible, visual and general alarm in the event of following conditions: - High temperature - Low temperature - High humidity - Low humidity - Loss of air - Water under floor These alarms shall have selectable control action enabled, disabled or off. The microprocessor shall activate a visual alarm only in the event of any of the following conditions: - Service intervals (cool, filter and humidifier) - Compressor short cycle - Low battery - Unit off (history only) All alarm occurrences shall be time and date stamped.



2.5.1.21 GENERAL ALARM OUTPUT: A general alarm output shall be provided to interface enabled alarms via a set of normally open dry contacts. A selection to invert the contact action shall be provided in the controller. 2.5.1.22 DATA LOGGING The control system shall maintain cumulative operating hours of model (cool, heat, humidify, dehumidify) and component (compressors, heater, humidifiers and fans). The 100 most recent alarms shall be retained in memory. 2.5.1.23 COMMUNICATIONS The microprocessor shall be compatible with all remote monitoring and control devices. 2.5.1.24 BMS Integration PAC shall get integrated to BMS with MODBUS Protocol through RS 485 2.5.1.25 2 Stage Electric Heating A second stage of electric heating, complete with manual reset high temperature safety switch, shall be provided to satisfy temperature space conditions. 2.5.1.26 Design of Heat Ventilation and Air-Conditioning:

The design is based on ASHRAE (American Standard) standards for Air Conditioning. The temperature and humidity shall be controlled inside the server room to support continuous operations. Therefore a Precision Air Conditioning (PAC) for maintaining the Dry Bulb Temperature (DBT) at 20° C with +/- 1° C and humidity 50% +/- 5% is envisaged in the server room. The server room and the PAC room are separated by a concrete wall and hence PAC‘s will not be commissioned inside the server room as per the site condition. To improve the efficiency and as well as to prevent mixing of hot & cold air of the PAC, the conditioned air enters the server room through ‗L-Shaped KWAL passes through the separating concrete wall. The capacity of the PAC for the server room is deduced in the following manner. We know that as per industry practices it has assumed that • 1 Ton of refrigerant required to maintain ambient conditions for every 125 sq.ft • The equivalent of 1 KVA = 0.2275 ton



2.5.1.26.1 The PAC for the Server Room is designed in the following manner • Therefore Refrigerant required for the Server Room Considered Critical Power 150 KVA (H)(30 racks x 5 KVA) =(150 x 0.2275) = 34.13 Ton • Server Room area = 1000 Sq.ft • Refrigerant required for Server Room Area (I) =(1000/125) = 8 Ton • Total Refrigerant required (J) = (H + I) = 34.13 Ton + 8 Ton = 42.13 Ton

for Server Room Area

• Safety Factor for Air Conditioning (K)@ 10% =4.2 Ton • Total Refrigerant required (J + K) = 42.13 Ton+4.2 Ton = 46.33 Ton For Server Room Area The Server Room shall be designed for a minimum refrigerant capacity of 51 tones. In order to have (N+1) redundancy and an additional unit of required capacity is also planned which would be connected in parallel as backup. 2.5.1.26.2 The PAC for the Network Room & Mux Room is designed in the

following manner • Therefore Refrigerant required for the Network Room & Mux Room Considered Critical Power 30 KVA (H)(6 racks x 5 KVA) =(30 x 0.2275) =6.825 Ton or 7 Ton • Network Room & Mux Room area = (170+100) = 270 Sq.ft • Refrigerant required for Network Room & Mux Room Area (I) =(270/125) = 2 Ton • Total Refrigerant required (J) = (H + I) = 7 Ton + 2 Ton = 9 Ton

for Network Room & Mux Room Area

• Safety Factor for Air Conditioning (K)@ 10% =1 Ton • Total Refrigerant required (J + K) = 9 Ton+1 Ton = 10 Ton For Network & Mux Room Area The Network & MUX Room shall be designed for a minimum refrigerant capacity of 10 Tones. In order to have (N+1) redundancy, an additional unit of required capacity is also planned which would be connected in parallel as backup.



2.5.2 Commissioning of High Performance Air Conditioning System For UPS Room: 2.5.2.1 Microprocessor Based high performance Air-conditioning Unit: UPS Room shall be air-conditioned with floor discharge type High Performance Air conditioning Unit along with bottom through air plenum of 6 TR nominal capacity & Dehumidified air quantity of 4100 CFM. Units should be designed for 24x7 continuous running. In order to have (N+1) redundancy, an additional unit of required capacity is also planned which would be connected in parallel as backup. The room temperature shall be maintained at 22 deg C +/- 2 Deg C and Max 65% RH and Outside temperature being 40 degree C. The outlet temperature from the unit should be less than 18 deg C. The air-conditioning unit shall be designed specifically for high sensible heat ratio applications. The system shall contain Scroll compressor, Evaporator blower & coil, Heater, Microprocessor & electrical and Thermostatic expansion valve (TXV) all of which shall be contained within the cabinet of the unit. The outdoor unit shall comprise of a Condenser unit, fan, motor & cooling coil. The Technical specifications of the construction of unit are as under: 2.5.2.2 Cabinet Construction

The frame & panel shall be constructed of heavy gauge Cold rolled cold annealed sheet steel duly powder coated. 2.5.2.3 Refrigeration Circuit

The refrigeration system shall be of the direct expansion type and incorporate hermetic scroll compressor. The system shall include HP control and LP switch, Thermostatic expansion valve, filter drier, sight glass and charging port. Each refrigeration circuit shall include rigidly mounted Isolation valves in the discharge and liquid lines to aid servicing and installation. 2.5.2.4 Evaporator Coil

The evaporator coil shall be constructed of copper tubes and louvered aluminium fins, with the frame and drip tray fabricated from heavy gauge aluminium. The drip trays must be double angled for condensed flow easily removable for cleaning. 2.5.2.5 Compressor

The compressor shall be of high efficiency SCROLL design, with an E.E.R. of not less than 11.1 BTU-H/Watt (COP of not less than 3.25). Compressor shall have inbuilt overloads, and shall be mounted on anti vibration mountings.



2.5.2.6 Evaporator Fans

Fan shall be of forward curved centrifugal type, separately driven by a high efficiency electric motor. The drive arrangement shall be self tensioning and provide for belt replacement with-out the use of tools. 2.5.2.7 Service Area

The foot print area of unit shall not exceed 0.50 Sqm. The unit shall be serviceable with a maximum service space of 1000mm in front of the unit. No side & rear access required for servicing. 2.5.2.8 Air Filtration

Filtration shall be provided by dry media disposable filters capable of filtering air to 95% down to 5 micron efficiency and shall be replaceable from the top of the unit. 2.5.2.9 Air-cooled condensers

Condenser shall be the low profile, weather proof type incorporating high efficiency direct drive, external rotor motors with axial blade fans. Condenser shall be suitable for 24 hours operation and be capable of providing vertical or horizontal discharge. 2.5.2.10 Controls

The unit should be advantages on Control System as below:

LED indication of operating modes and set points. Alarm codes to indicate type of alarm. Password protection of high-level control parameters.

2.5.2.11 Safety Protections:

Type of Alarm that will active remote Alarm:

a. Faulty Sensor, b. Memory Error, c. HP or LP Trips, d. High Temp. Alarm

2.5.2.12 Refrigerant Piping: Each refrigerant circuit shall be suitable for operation on R-22 and shall include the following items:



a) Thermostatic expansion valve with pressure equalization; b) Removable liquid line drier / filter. c) Liquid line sight glass with moisture indicator. d) Hand shut off valves.

2.5.2.13 High Sensible CFM Unit (UPS room) The UPS room air conditioning which doesn‘t demand precision cooling similar to the server room is provided with High Sensible CFM unit without a humidifier. This system is an economic proposition that supports 365 days continuous operation coupled with less power consumption than PACs and will have better reliability & efficiency than comfort AC. UPS room area = 450 sft • Refrigerant required for Area (L) =(450/125) = 4 Ton • Safety Factor Air Conditioning (M)@ 10% = 0.4 Ton • Total Refrigerant required (N) =(L + M) = 4.4 Ton Considering the heat dissipation rate from UPS the Refrigerant required for the UPS Room area shall be designed with a minimum 6 Ton High Sensible CFM unit. In order to have (N+1) redundancy, an additional unit of required capacity is connected in parallel as backup. 2.5.2.14 Technical Compliance for High Sensible CFM Unit Type Air Cooled Top Discharge Unit Type of Duty Operation 24 Hrs Total Cooling Capacity (At Out Door / In Door 6 Tr Conditions Location of Installation Indoor (Condenser open to Atmosphere) Total Air Quantity Handling 4200 CFM Type Hermetic Scroll No of Compressor / unit 1 No Power supply 415V / 3 Ph / 50 Hz in V / Ph / Hz Capacity Control Arrangement 0% & 100% Method of Lubrication Splash Grade of Lubrication Oil Mineral / eqvt. For R22 Starting & unloading arrangement On / Off Motor protection Internal Protection Type Copper tubes with rifled bore, louvers

aluminium fins No of Coil / unit 1 Rows deep 2 Nos. Type of Fan Forward curved Centrifugal fan



Material Fan / Frame Galvanized Steel or equivalent Type of Drive Belt No of Fan / unit 1 No. Power supply 415/3/50 in V / Ph / Hz Motor rpm 1400 rpm Motor class of insulation Class F Type of Bearing Ball Race type shaft bearing Type Thermostatic Expansion Type Dry media disposable G4

(Performance to AS1324) Filtration efficiency 95% / 5 micron size Pressure drop (clean condition) ~ 2 mm wc Pressure drop (dirty condition) ~ 4 mm wc 2.5.3 Comfort AC:

2.5.3.1 General:

The comfort Air Conditioners is desired for maintaining the ambient room temperatures at optimum levels in Staging Room, BMS Room, Manager Room, Meeting Hall, NOC Room, Media Storage & Spares Room including Reception and pathway of the DC/DR. Adequate care has to be considered to ensure the cool in the open area (reception) from escaping out. The following table illustrates the comfort AC planned for the various rooms.

The Hi-Wall Split AC are planned for all the closed room the rooms are (Staging Room, BMS Room, Manager Room, Meeting Hall, NOC Room, Media Storage & Spares Room,etc) and their refrigerant capacity is estimated and given below. The cassette AC is planned for the reception & passage (pathway) area, a total of 4 ton of AC capacity is allocated for these open areas.

Sl. No.

Area Description

Type of AC Total Capacity required (in Tons)

Required No. of indoor Units

Capacity per unit (in Tons)

1 Staging Room Hi-Wall Split AC 6 2 3

2 BMS Room Hi-Wall Split AC 1 1 1

3 NOC Room Hi-Wall Split AC 2 2 1

4 Manager Room Hi-Wall Split AC 1 1 1

5 Meeting Hall Hi-Wall Split AC 2 1 2

6 Media Storage Hi-Wall Split AC 1 1 1

7 Spares Room Hi-Wall Split AC 1 1 1

8 Reception and Pathway

Cassette AC 4 2 2

Note: Air conditioning system for Customer Care Centre in the first floor of Data Centre building at Chennai shall be designed and quote accordingly. The Size of the Customer Care Centre is 1000Sq.ft. (30 Seats). No Customer Care Centre has been proposed at Disaster Recovery Centre at Madurai.



2.5.3.2 Star Rating:

All the Hi Wall Split AC should have a minimum of 3 star rating. 2.5.3.3 Moisture Removal:

The comfort air conditioning to ideally suit a moisture removal rate around 1 litre / hour for 1.5 tonner Hi-Wall Split AC and 2 litre / hour for Cassette AC. 2.5.3.4 Compressor

The compressor shall be of Rotary type for the Hi-Wall Split AC and high efficiency Scroll or reciprocating type for Cassette AC. Compressor shall have inbuilt overloads, and shall be mounted on anti vibration mountings. 2.5.3.5 Evaporator Fans

Fan shall be of forward curved centrifugal type, separately driven by a high efficiency electric motor. The drive arrangement shall be self tensioning and provide for belt replacement with-out the use of tools. 2.5.3.6 Air Filtration

Filtration shall be provided by dry media disposable filters capable of filtering air to 95% down to 5 micron efficiency and shall be replaceable from the top of the unit. 2.5.3.7 Air-cooled condensers Condenser shall be the low profile, weather proof type incorporating high efficiency direct drive, external rotor motors with axial blade fans. Condenser shall be suitable for 24 hours operation and be capable of providing vertical or horizontal discharge. 2.5.3.8 Controls The unit should be advantages on Control System as below

a. LED indication of operating modes and set points. b. LCD display Remote control

2.5.3.9 Conduits: Required supply of piping for refrigerant flow and necessary electrical wiring to be provided for effective installation. The same should be installed & tested for successful operation at the project site.



2.5.3.10 Stabilizers Appropriate high quality stabilizers to be provided with the comfort AC.

3.0 ELECTRICAL INFRASTRUCTURE:

3.1.0 SCOPE:

This specification covers design, engineering, manufacture, assembly, testing at

manufacturer‘s works, supply, delivery at site, unloading, handling, proper storage at site,

erection, testing and commissioning at site of complete Electrical System and Equipment for

the proposed Data Centre / Disaster Recovery Centre to be installed at TANGEDCO as detailed

in the specification, complete with all accessories required for efficient and trouble free

operations.

The entire electrical power distribution for Data Centre shall provide Dual distribution path so

that there is no Single Point of Failure [SPOF] available from the HT/ LT panel of Data centre

to IT Equipment. So all elements of the electrical systems, including backup system, are

typically fully duplicated, and critical servers are connected to both the "Source-1 side" and

"Source-2 side" power feeds so as to achieve N+1 Redundancy in the systems. The power

distribution is to be designed for a 24 hour/365 day operation and for 100 % uptime.

VCB at HT side/ ACB at LT side with auto changeover are suggested for use to ensure

instantaneous switchover from one supply (Main from 11KV/433V 500 kVA Transformer) to

the other and Standby from 385kVA DG in the event of a total power failure and vice-versa

when concerned power is restored.

Backup power shall consist of uninterruptible power supplies and diesel generators.

The electrical system shall provide power to other utilities like Precision Air Conditioning

System, Comfort Air Conditioning System, Lighting System, Power Distribution Boards, Utility

UPS etc.

For IT loads it has been considered 30 nos Serve-racks (Out of 30 Rack loads 2 Mainframe

servers, 1 No. Storage system and 1 No. Tape library) and 5 Nos. Networks and MUX racks

with dual source for each.

All electrical installations shall conform to the relevant Indian Standard Specifications and

Indian Electricity Rules. For Safety, OHSAS 18001, ISO14000 related risk and aspect

mitigation system should be established especially for electrical and fire safety.

http://en.wikipedia.org/wiki/N%2B1_Redundancy

http://en.wikipedia.org/wiki/Uninterruptible_power_supply

http://en.wikipedia.org/wiki/Electrical_generator



Bidder shall apply their own mind towards implementation of the philosophy of power distribution as exemplified above and propose the supply of items accordingly irrespective of the SLD. An electrical room dedicated to house all electrical components is proposed at near the Data Centre Building . It will specifically house Switch Gear, Transient Voltage Surge Suppression system, HV Panel, LV Panel etc.

All the Electrical Equipments shall be integrated with BMS for monitoring (Mini SCADA), Operation and protection. And Necessary additional provision for connecting the HT side VCBs with Utilities SCADA system shall have to be provided.

Foregoing Sections would provide Technical Specifications of major equipment/systems.

3.2. OPERATIONAL LOGIC OF POWER SUPPLY :

The data centre power supply is from two nos 500 KVA Transformers for lighting, power and HVAC loads in addition to IT loads through UPS. The standby power also has 2 numbers of 385 KVA DG Sets for Entire loads. Normally, both the transformers shall remain charged and share load. Failure of supply from either of the loaded transformers will lead to automatic transfer of total load to the next transformer. When there is loss of power from both the transformer sources, the DG sets shall start immediately and run. Upon restoration of any Transformer Power, the changeover from DG power to Main Power will be automatically done by the system by switching off the DG set after a specified period of time. The Intelligent Micro-controller will maintain the logic of such load management and operational sequence.

3.3.POWER LOAD CALCULATION FOR DATA CENTRE:

A total of 1000 KVA Raw Power would be provided by TNEB. The total Raw Power requirement for the Server Room Area is 337 KVA. Additional 126 KVA has been catered for certain auxiliary areas like NOC room, BMS Room, UPS Room, Staging Room, Network Room, Media Storage, Manager Room and Meeting Room etc. and for Customer Care Centre a total load of 61 KVA has been provided . The balance capacity is proposed for other Floors and lift.

For Proper and uninterrupted working of Data Centre, supply of clean and uninterrupted power is essential. This can be ensured by having the Data Centre Power distribution system with redundancy at three levels, as follows:

Two Incoming HT feeder supply from different substations. Even if one feeder is down, the other one keeps the power available.



Emergency Diesel-Generator backup on Mains failure of both the feeders.

3.3.1. For Server Room Area:

Critical Power requirements: The proposed Data Centre / Disaster Recovery Centre shall have Server room area of 1000 Sq.ft. to accommodate 30 regular racks. All the 30 racks proposed are Regular Racks (RR) and hence the power consumption per rack is assumed as 5KVA. The total critical power required for servicing the servers amounts to, • No of proposed Regular Rack = 30 nos. • Power required per Regular Rack = 5 KVA • Power to service 30 RR = (30 x 5) = 150 KVA The Critical Power for ―Server Room Area‖ (A) = 150 KVA 3.3.2.For Network and MUX (B) • No of proposed Network & Mux Rack = 6 nos. • Power required per Regular Rack = 1 KVA • Power to service 6 Nos. of Network & Mux Rack= (6 x 1) = 6 KVA The Critical Power for ―Network and MUX” (B) = 6 KVA

1) Total Critical Power Requirement (A) + (B) =156 KVA

3.3.3.For Auxiliary Service Area:

• UPS power required for per computer =0.25KW/comp. • No of computers = 20 comp. • Power Required for 20 computers in KW = 5 KW • Power Required for 20 computers in KVA = 6 KVA • Power required for BMS room & Control System Panel = 10 KVA • Total Power required for Auxiliary Area = 16 KVA or 20 KVA

2) Total Power required for Auxiliary Area = 20 KVA

(UPS for Auxiliary Area is proposed with capacity of 50 KVA) 3.3.4. Lighting load Power requirement for Data Centre:

Lighting Load power rating (A) = 0.0025KVA per Sq.ft.

Total area of Data Centre (B) = 3150 Sq.ft.



3) Lighting Load Power requirement (AXB) = 7.875 KVA or 8 KVA

3.3.5. For PAC: (Server Room, Network & MUX Room)

Total PAC capacity requirement (A) = 61 Tons

Power requirement per Ton (B) = 2.35 KW

Total power requirement for PAC in KW ( C )= (A) X (B) = 143.35 KW

Total power requirement for PAC in KVA (D) = ( C )/0.9 = 159.27 KVA

4) Total power requirement for PAC (D) = 160 KVA

3.3.6. For High sensible CFM AC: (for UPS Room)

Total CFM AC capacity requirement (A) = 6 Tons


Total power requirement for CFM AC in KW ( C ) = (A) X (B) = 14.1 KW

Total power requirement for CFM AC in KVA (D) = ( C )/0.9 = 17.625 KVA

5) Total power requirement for CFM AC = 20 KVA

3.3.7. For Comfort AC: (for Auxiliary Area)

Total Comfort AC capacity requirement (A) = 18 Tons


Total power requirement for Comfort AC in KW ( C ) = (A) X (B) = 42.30KW

Total power requirement for Comfort AC in KVA (D) = ( C )/0.9 = 52.875 KVA

6) Total power requirement for Comfort AC = 60 KVA

3.3.8.For raw Power Points:

Total number of 15A power point required for Data Centre = 29 Nos.

Raw power requirement for 29 Nos. of 15A Power point = 104.4 KVA

7) Total power requirement for raw power points = 105 KVA

Total Power requirement for Data Centre (Ground Floor) (1 to 7) = 563 KVA

3.4. Power requirement for Customer Care Centre:

3.4.1.Critical Load power requirement:



• UPS power required for per computer = 0.25KW/comp. • No of computers envisaged = 30 comp. • Power Required for 30 computers in KW = 7.5 KW • Power Required for 30 computers in KVA = 9 KVA • Total Power required for CCC = 9 KVA or 10 KVA Critical load at Customer Care Centre = 10 KVA

3.4.2.For AC:

Total Comfort AC capacity requirement (A) = 10 Tons


Total power requirement for Comfort AC in KW ( C ) = (A) X (B) = 23.5 KW

Total power requirement for Comfort AC in KVA (D) = ( C )/0.9 = 26.11 KVA

For AC for Customer Care Centre = 30 KVA

3.4.3. For Lighting Load:

Lighting Load power rating (A) = 0.0025KVA per Sq.ft.

Total area of Customer Care Centre (B) = 1000 Sq.ft.

Lighting Load Power requirement (AXB) = 2.5 KVA or 3 KVA

Total power requirement for Lighting Load for CCC = 3 KVA

3.5.4.For Power Points:

Total number of 15A power point required for Customer Care Centre = 5 Nos.

Raw power requirement for 5 Nos. of 15A Power point = 18 KVA

For raw power point = 18 KVA

Total Power requirement for Customer Care Centre: = 61 KVA

Total power requirement for Data Centre and Customer care Centre

= 563 KVA + 61 KVA

= 624 KVA

Maximum power demand in KVA with Diversity factor of 0.8 = 499.2 KVA

= 500 KVA



3.5.Description of Electrical Work Schedule & Specifications:

All electrical work including the commissioning of DGs, ACs should be done by an Electrical Contractor possessing a valid Licensee EA/ESA grade issued by Tamil Nadu Electrical Licensing Board. If possesses License issued by any other Government, the same has to be endorsed by Tamil Nadu Electrical Licensing Board. 3.6.Electrical Drawing: MAIN SCHEMATIC DIAGRAM - Single Line Drawing (SLD) showing detailed electrical layout.



3.7 .Raw Power: The Data Centre shall be fed with both EB Power and DG set power with an Auto changeover through Interlocking arrangements. 11 KV, power supply from two different sources with 1000KVA Demand will be provided by

TNEB.

Raw Power will be obtained at 433V level from the Main Panel at 11KV / 433V Indoor Substation for Power and Lighting. LT Power from the Main Panel of 11KV / 433V Indoor Substation will be distributed to the following:

1. 160KVA UPS 2. 50KVA UPS 3. Server room PAC Power Panel 4. Network & MUX room PAC Power Panel 5. Power Distribution Board of CFM AC and Comfort AC Unit. 6. Power Distribution Board for Data Centre. 7. Lighting Distribution Board for Data Centre. 8. Critical Load UPS Power Panel at Customer Care Centre. 9. Power Distribution Board at Customer Care Centre. 10. Lighting Distribution Board at Customer Care Centre.

Two Numbers of 385KVA DG sets has been proposed to be installed in the OTS area near the Power Room at Ground Floorl. Moulded Case Circuit Breakers along with Air Circuit Breakers shall be used in the construction of distribution panels. The final distribution shall be done using Miniature Circuit Breakers. All underground cables are of XLPE sheathed Aluminium cable for the rating above 25 Sq.mm. PVC sheathed Aluminium cable for the rating below 25 Sq.mm. The Panels shall have MCCBs as components and not FSUs. The panels / switch boards shall have sufficient spares as required to provide for future additions or alterations. From the Main panels, Underground PVC insulated XLPE sheathed cables shall be used to transmit power to the Data Centre / Disaster Recovery Centre building. The cables shall be laid in the permanent constructed trench with precast slab as cover.

The final distribution boards (LDBs and PDBs) which feed the socket outlets, lighting circuits and other requirements are protected by ELMCBs which in turn protect the downstream circuits too.

From the final distribution boards, copper cabling will be laid above false ceiling will be enclosed in MS conduits as a safety measure against spread of fire in case of some accident. MS conduits shall be used incase of concealed wiring.



3.8.Detailed Electrical Work Schedule: 3.8.1. 11KV / 433 V Indoor Sub Station: General: The Substation shall be of modular construction consisting of HT Control Panel with VCB, and all other metering and protection, LT Control Panel with ACB, MCCB and all other metering and protection and 11KV / 433V Oil Cooled Transformer installed in OTS as detailed in the enclosed diagram with all protections like Over current, Earth fault and under voltage etc. The Substation shall have minimum maintenance requirement with no accidental access to live parts and fully complied with all statutory requirements. The substation shall be fully compartmentalized and the substation shall be suitable for bottom cable entry. Selection of HT/ LT Board and Transformer components rating shall be as per the enclosed specifications. System Requirements: 1. System HT : 11kV, 3 phase, 3 wire, 50 Hz, 1000KVA. 2. System LT : 433V, 3 phase, 4 wire, 50 Hz, 3. Installation : Outdoor. 4. Transformer : 500KVA rating 5. Busbar : Epoxy encapsulated copper busbar shall be provided. Epoxy Seal off bushings shall be used between compartments 3.8.2. PANELS HT SWITCH GEAR 1.General:

i) The switch gear shall be part of substation with two different sources of supply from two different substations of 11 kV, 3 phase, 50 HZ solidly earthed neutral system. Highest system voltage will be 12 kV.

ii) The switch gear section shall have provision for two incomers and two outgoing to two

different 11KV/433V Transformers.

iii) Specification and other particulars of the switchgear are broadly categorized under the following heads.

a) Cubicle with busbars, relay, instruments, earthing device etc. b) Vacuum Circuit breaker.



c) Instrument transformer (PTs, CTs) d) Panel lighting.

2.Cubicle: Construction:

i) The switch gear along with the VCB shall be one section of the substation and all the components of the switch gear section shall be accessible for easy maintenance.

ii) Sheet steel shall be of minimum 2 mm thickness for partition between sections and 3

mm for hinged front and bolted rear doors.

iii) Electrical continuity between all metal parts not alive and the earth terminals of the unit shall be ensured.

iv) Insulated partition shall be provided for Busbars, CTs, PTs, outgoing cables & circuit

breaker and relays and controls. Tinned copper busbars with suitable heat shrink sleeves shall be provided. Wiremesh shall be provided wherever necessary to prevent inadvertent touching of busbars.

v) Hinged doors shall be provided for accessing the switchgear section.

vi) Three point locking arrangement with single operating handle shall be provided for all

hinged doors. Hinge locks, lock covers etc., shall be fabricated from anti-corrosive material. The hinges shall be sturdy and robust. The doors shall be provided with additional members for strengthening to avoid any warping (or) bending.

vii) Cubicles will be exposed to high winds, dust and rain. Neoprene gaskets of high quality

shall be used. The top cover of outdoor shall have necessary slope to avoid stagnation of rain water.

viii) Base frame shall be of sufficient thickness and tar painted to give corrosion

resistance even if water accumulation is there.

ix) All mechanical indications of breaker / LBS position, operation shall be visible from outside. Suitable transparent cover shall be provided on the front door of compact unit.

x) Emergency push button shall be accessible from outside.

xi) Safety shutters to cover live part to prevent accidental contact, and explosion vents to

release the gases during fault occurrences shall be provided.

xii) Lifting lugs, base frame of adequate thickness, foundation bolts of min. 19mm dia with suitable washers shall be provided. Lifting guides shall be provided at the top to prevent touching of wire ropes with body of unit while lifting the substation equipments.



3. Cable termination:

i) Both incoming and outgoing cables of the Substation are with bottom entry. Cable terminations shall be made with the sealing kits of specified type.

ii) Blank G.I. plates gasketed and bolted to the cubicle for glanding and terminating

control and power cables shall be provided.

iii) Double compression type brass cable glands shall be used. Tinned heavy duty copper lugs shall be supplied for all cables. Adequate space shall be provided for splicing and termination of cable. The cable shall be secured properly with suitable support.

4. Relays

i) All relays specified shall be flush mounted in dust proof cases and shall match the appearance of the instruments mounted on the same panel. Each relay shall be identified with relay number indicated in the approved control scheme.

ii) Protective relays shall be of easy with drawable type. Trip circuits shall be

automatically broken and current transformer secondary circuits shorted, when a relay is withdrawn from its case. A marking strip shall be provided in front of each terminal block and diagram plate at the back of each case to identify connections.

iii) Relay contacts shall withstand repeated operation and shall make or break the maximum currents in their circuit without deteriorating. All spare contacts shall also be wired upto the external terminals.

iv) Relay coils shall carry their normal currents indefinitely and such currents as can occur

under fault conditions. Relay mechanism shall not be affected by vibration or external magnetic fields, which may occur in normal operation.

v) All relays in tripping circuits shall have mechanically operated flag indicators. Indicators, mechanical or electrical, shall also be provided on other relays to identify type of fault that may have occurred.

vi) Indicators shall be capable of being reset without opening the relay case. It shall not

be possible to operate the relay by hand or to alter its setting, without opening the case. All relays shall operate satisfactorily from 70 to 110% of rated voltage.

5. Indicating Instruments

i) All indicating instruments shall conform to IS 1248 and integrating meters to IS 722.

ii) Indicating instruments shall be of size 96 x 96 mm and shall conform to 1.0 accuracy class. Meters shall be suitable to PT secondary of 110V (line) and CT secondary of 5A. Scales shall be suitably provided depending on the ratio of instrument transformer. All



indicating instruments shall have non-reflecting bezels, clearly divided and legibly marked scales and sharply outline pointers. They shall be provided with zero adjusting devices for external operation. Indicating instruments shall be taut band type.

6.Control Circuits: i) Control switches shall be suitable for use in AC circuits up to 440V and rating of 5A.

ii) All incoming control and power circuits shall be fed through isolating ON/OFF rotary

switch and HRC fuses with insulating base and holder. Closing circuit, tripping and control circuit, lamp circuit shall be segregated and protected by independent fuses.

7.Control wiring and ferrules: i) All wiring shall be carried out with 1100 volts grade core wires having multistrand

copper conductor. All control circuit shall be with copper conductor having a minimum cross-sectional area of 1.5 sq.mm per core and CT circuit shall be 2.5 sq.mm copper conductors. The wire shall be insulated with PVC.

ii) All control wiring shall be terminated using eye type tinned copper lugs on to the stud type terminals. More than two wires shall not be terminated onto a single terminal.

iii) All holes or tubes for wiring runs shall be bushed and shall have room for reasonable future additions. All cable runs shall clear injurious gases and heat emitted by control gear operation or shall be adequately protected from them.

iv) Control cables when laid in HT busbar chamber, cable shall be taken through conduits. No joints or tees shall be made in wires between terminals. The wire shall be identified by numbered ferrules at each end, all in accordance with the connection diagram, equipotential terminals shall have the same ferrule numbers.

v) All ferrules shall be made of non-deteriorating materials. They shall be white except in

case of warning ferrules, which shall be red. Ring type ferrules shall have the character engraved on it. The ferrules shall be firmly located in each wire so that they cannot move freely on the wire. Wiring across hinges shall be by flexible wires.

vi) The colour code for control wiring shall be as enumerated below:

a) Metering circuits – Black b) Closing, tripping, protection relays and main power supply circuits – Red. c) Annunciation and indication circuits – White.

8.Inscription

i) Each unit and each component shall be clearly labeled to indicate its purpose.



ii) Owner‘s nameplates at front and back of each cubicle shall be engraved on white back

ground with black lettering of 10mm size.

iii) Each component label shall include the component symbol shown on the connection or schematic diagram.

iv) All components mounted inside the cubicle shall be provided with screwed inscription

plate.

v) The characters to be engraved on the cubicle labels shall be furnished at later stage.

9.Earthing An earth bar of adequate cross section shall be fixed preferably at the back of the switchboard. The earth bar shall be electrically continuous and shall run the full extent of each board. The earth bar shall be of same material as the busbars and shall have a minimum cross section of 300 sq.mm. Each unit shall be constructed to ensure satisfactory electrical continuity between all metal parts not intended to be alive and the earth terminals of the unit. Double earthing shall be provided from each equipment to the earth bus by suitable size of wire (or) flat. 10.Paintings The switch gear unit cubicle shall be furnished with colour code to be indicated at the time of drawing approval conforming to IS 5-1961 latest. The sheet metal parts shall be subjected to following pre-treatment before final painting. Degreasing

b) Pickling for complete rust removal c) Phosphating d) Corrosion resistant primer painting. Two final coats spray painting shall be given. e) The cubicle shall be painted with colours as follows:-

Internal – Glossy white 11.Space heater Space heater with isolating switch fuse unit shall be provided for each cubicle. 12.Testing & commissioning



Routine tests as per relevant IS standards to be conducted at works & site and test certificates shall be furnished. Type test certificates for identical equipment shall be provided. 13.Drawing The following drawings shall be submitted for approval. Copies of approved drawings along with reproducible and soft copies in CDs shall be furnished at the time of supply of equipment. As built drawings incorporating site modifications along with reproducible and soft copies in CDs shall be furnished.

a) Dimensional GA drawing of switchgear indicating foundation details, cable gland plate location for each cable plan and elevation of switchboard.

b) Cross sectional drawing of cubicle busbars CTs, cable breaker LV chambers and indicating all electrical clearances between busbars and earth.

c) Control schemes of each feeder / breaker with components specification.

d) Terminal plan and internal wiring drawings of all the cubicles

e) Inter panel wiring drawings. 3.8.3. 11 KV SWITCHGEAR SECTION - TECHNICAL i) Thickness of sheet steel : a) Partitions between panels : 2mm sheet steel b) Front and rear hinged doors : 3mm sheet steel and top covers sides and bottom ii) Rated voltage : 3 Phase, 11 KV, 50 Hz iii) Continuous rated current at 50 deg C : 1000 A iv) Short circuit withstand : Capability to switchboard Including bus bars a) Short time rating : 25 KA (RMS) for 3 secs. b) Dynamic rating : 63 KA peak



v) Bus bars : a) Materials of bus bars & rating : 50 x 12mm ,Copper, 1000 A for phase, Size

of dropper shall be same as main bus bars.

b) Temperature rise of bus bars : 40 deg C at rated current over 50 deg C ambient

c) Bus bar chamber partition : Cast resin bushings to beprovided

d) Bus bar joints : 1. Cadmium plated bolts and

tinned surfaces. 2. Flexible connection if required

e) Insulation : 1.1 KV PVC sleeved f) Phase identification : Colour tapes g) Support insulators : Non-hygroscopic, non-tracking,

resin cast insulators.

vi) Insulation level

a) Impulse withstand value : 75 KV (P) b) 1 min. PF withstand value : 28 KV (RMS) vii) Auxiliary connections : Silver plated, 16A plug and

socket

viii) Safety shutters : Automatically operated shutters ix) Accessories with each cubicle

a) HT section illumination lamp with : To be provided Switch b) Space heater : 230V, AC, 50 Hz heater with control

switch c) 3 Pin power socket with : to be provided



switch d) Base channel : Base channel of minimum 100 x

50 mm with cross bracings and 19mm foundation bolts.

e) Name plates, inscription : As specified plates for components, switches feeder identification

f) Flexible copper connections : To be provided between hinged doors and cubicle for earthing g) Breaker accessories visible : Mechanical breaker position and accessible from outside

- Breaker ON / OFF - Mechanical trip push Button accessible from Outside with panel door close. - Mechanical close push button

h) Removable welded wire : To be provided wherever mesh behind the panel necessary. i) Danger notice boards and : To be provided instruction plates j) Operation counter : To be provided k) i) Components to be : Push buttons, control and

mounted on the front selector switches (operating door of cubicle height shall not exceed 1800mm) lamps, meters, relays (all as per approved layout)

ii) Components to be mounted : Nil on the outer door of panel l) Termination type at incomer : 3 phase, cable termination for

suitable XLPE cable. Cable entry from bottom

m) Cable terminations for outgoing feeders : 3 phase, cable termination for



suitable size XLPE cable Cable : Bottom cable entry at the rear

Side of cubicle

Control cable : Bottom cable entry at the rear Side of cubicle with necessary Shielding.

Safety clearances in air between : 127mm (Minimum) phases and phase & earth xi) Control schemes : As per specification 3.8.4. 11 KV VCB – VACUUM CIRCUIT BREAKER

Circuit Breaker: 11 KV VCB

i) The circuit breaker shall be three pole vacuum circuit breaker with spring charged operating mechanism. Plug in isolating contacts and 6 NO+6NC auxiliary contacts all mounted on a withdrawable carriage.

ii) The air clearance between phases and between phase to earth at the breaker incoming

and outgoing terminals shall not be less than those indicated in the IS/IEC/British standards, corresponding to the basic insulation level of the circuit breaker as indicated in the criteria.

iii) The temperature rise of the breaker contacts / terminals while carrying the rated

continuously or the rated short circuit current of rated duration shall not exceed 40 deg C. Over ambient of 50 deg C. Further to minimize burning and pitting of contacts all parts exposed to the arc created by current interruption shall be protected by special arc resistance material.

iv) The circuit breaker shall be designed such that the peak short circuit current (i.e. 2.5

times the RMS short circuit current) specified can be interrupted without causing appreciable damage to main contacts.

v) The arc extinguishing chambers and the contact assembly shall be enclosed in an

insulating tube made of FRP/tough glass/ ceramic or other suitable arc resistant material with sufficient strength to with stand the internal pressure / forces developed while clearing rated short circuit current.

vi) Surge Arrestor shall be provided wherever necessary.



vii) 30V DC for operation of the Circuit Breaker and protection relays shall be taken from power pack (30V DC). This is to ensure the operation of breaker in case of power supply failure. (2 open and 2 close operations).

Operating Mechanism

i) Circuit breakers shall be provided with spring charged, manual & electrical independent closing and shunt trip and series trip for opening.

ii) Trip coil shall operate satisfactory between 70% and 110% of rated voltage.

iii) The closing and tripping circuits shall be self opening on completion of their respective

functions irrespective of position of the breaker ON/OFF switch.

iv) A readily identifiable mechanical emergency trip device as well as provision for manual charging of springs through the cubicle door shall be provided for each breaker.

v) In case of circuit breakers with more than one operating spring, they shall be so

interlocked such that the springs are charged to the same extent and the breaker can be closed only if all the springs are charged to the required values. Further in case of multiple pole / phase breakers equal current sharing between poles shall be ensured by means of current balance schemes.

vi) In order to ensure the reliability and long operating life for the mechanism, the

mechanism shall be light, with a high mechanical strength and abrasion resistance to avoid high rate of wear and tear and with few components. The number of components in the breaker and operating mechanism shall be kept to a minimum and they shall be designed to be free of undue stresses during normal or short circuit operations. Further they shall ensure a high frequency of operations indicated in technical particulars. All the moving parts of the mechanism requiring inspection, maintenance and lubrication shall be easily accessible.

vii) Operation counter shall be provided on the breaker for recording number of ON/OFF

operations.

viii) A visual ON/OFF indication and SPRING CHARGED indication shall be provided positively coupled to the operating mechanism and visible from front with the cubicle door closed. Indications shall be provided for limit switches for spring charged and discharged condition. The Mechanism shall be TRIP FREE as per IEC.

ix) The life of the operating mechanism shall not be less than 30,000 operations. It shall

not be possible to open the doors without opening the Circuit Breaker.

Auxiliary Contacts



i) Each circuit breaker shall have adequate 6NO+6NC of auxiliary contacts to control circuit changes for indication, protection, interlocking, supervision, metering and others.

ii) Breaker auxiliary contacts shall be available in test and service position and those

available in service position only shall be clearly indicated.

iii) Normally open and normally closed contacts shall be interchangeable at site.

iv) All auxiliary contacts shall be positively operated by the main apparatus and all contacts shall be adequate to make, carry and interrupt the currents in their circuits.

v) Emergency push button to trip the VCB shall be provided. 3.8.5. VCB – TECHNICAL: i) System : 11 KV, 50Hz, 3Phase system neutral

earthed

ii) Highest system voltage : 12 KV iii) Design ambient : 50 deg C iv) Rated current in IP55 : 630A enclosure at 50 deg C ambient v) Symmetrical breaking : 25 KA (RMS)

capacity at 12 KV or less

vi) Making capacity and : 63 KA peak dynamic stability rating vii) Short time current rating : 25 KA for 3 sec viii) Operating duty : 0-3 min- co-3 min – co ix) Total break time : Less than 4 cycles x) Critical current : Shall be restrike free xi) Arc extinction medium : Vacuum



xii) First pole to clear factor : 1.5 xiii) Operating Mechanism

a) Type of closing : Spring charged stored energy

manual independent closing.

b) Method of closing : Manual and electrical c) Rated voltage of shunt trip : 30 V DC

d) Operating range : 70 – 110% of rated voltage

xiv) No. of poles / Phase : One xv) No. of breaks / pole : One xvi) Auxiliary contacts : 6 No + 6NC (Silver plated

contacts )

xvii) Rating of auxiliary contacts : 5A at 110 V AC xviii) Wiring of auxiliary contacts : All auxiliary contacts wired to

terminal block, external to draw out truck.

xix) Material of fixed and moving : Silver plated copper contacts with contacts self. Aligning feature having contact pressures.

xx) Interlock : Door interlock with breaker xxi) Breaker fully type tested as per : IEC – 56 and IS 2516 xxii) There should be provision for shunt trip and series trip. Shunt coil should be rated for 110 V DC. 3.9. No of VCB: Totally 5 Nos. of VCB is proposed including BUS coupler. 2 Nos. for Incoming, 2 Nos. outgoing to Transformer and 1 No. BUS coupler. Suitable BUS riser, BUS PT and Line PT shall be provided. 3.10.Instrument Transformer: 3.10.1.Current Transformer (CT)



(i) Separate cores shall be used for metering and protection. (ii) All current transformers shall be designed to have over current factors to withstand

the fault currents of the associated system as applicable to the switchboard.

(iii) Current transformer used for protection shall have an accuracy limit factor not less

than 15. Those used for metering shall have a saturation factor of 2.

All current transformers shall have 5 Amp. secondaries and shall be of resin cast with bar primary. Polarity of primary and secondaries of all the CTs shall be clearly marked. Current Transformer - TECHNICAL i) Type : Resin cast, bar primary ii) Ratio, burden accuracy : a) 50 / 25 / 5/ 5A, 15VA, class

class, cores 0.5 for metering, 5P20 for protection for transformer feeder.

iii) Short time rating : 25 KA for 3 sec. iv) Dynamic stability current : 63 KA peak v ) Insulation level

a) Impulse withstand voltage : 75 KV peak b) PF withstand voltage : 28 KV (RMS)

vi) Thermal overload capacity : 120% continuous vii) Applicable standard : IS 2705 3.10.2.Potential Transformer (PT)

(i) Potential transformer shall be built up of CRGO electrical steel. The Potential transformers shall be resin cast dry type. The PTs shall be 3 nos. of single – phase type of suitable ratio and burden.

(ii) HT side and LT side of PTs shall be protected by HRC fuses. LT terminals shall be

terminated on separate power terminal block located in the same panel. (iii) Control supply 110V AC shall be derived from 11KV Bus PT for the following

purpose.



a) ON,OFF & Auto trip LED Indications for 11 KV VCB.

b) ON,OFF & Auto trip LED Indications for 433 V ACB.

c) Working supply for 4 element relay meant for Transformer protection.

d) Input source for 30V DC Power pack. 30V DC for operation of the circuit Breaker and protection relays shall be taken from power pack (30V DC). This is to ensure the operation of breaker in case of power supply failure. (2open and 2 close operations).

e) PT signal to the static Energy meter (only in the case of 11 KV entry point) 11KV Bus PT burden shall be suitably designed to cater the above needs also.

Potential transformers - TECHNICAL i) Type : Resin cast, natural air cooled ii) Ratio : 11KV /3 / 110 V/ 3 iii) Connection :Three single phase PT with

suitable power pack for DC shunt trip

iv) Rated burden : 100 VA / Phase, class 0.5. v) Voltage factor : 1.1 continuous, 1.5 for 30sec vi) Neutrals : Neutrals to be brought out for

earthing on HV and LV side.

viii) Insulation level :

a) Impulse withstand voltage : 75 KV (P) b) PF withstand voltage : 28 KV RMS

ix) Protection

a) HV side : 2 Amp. HT HRC fuse for each

phase



b) LV side : Link type HRC fuse

x ) Mounting of PT : Fixed type xi) Applicable standard : IS 3156 3.11. Indicating meters i) Type of meters : Ammeters, voltmeters ii) Type of movement : Taut band iii) Size : 96 x 96 mm iv) Dial finish : White painted dial with pointer

type needle

v) Mounting : Flush mounting vi) Accuracy Class : 1.0 vii) Voltage / current : 110 V PT, 5A CT sec current

i) Range : As specified

ix) Applicable standard : IS 1248 3.12. Auxiliary equipment (i) Protection relays : Drawout type aux. Voltage

30 V DC

(ii) Control switches : 16A, 440V AC quick make quick break, flush mounted stay put / spring return, IS4064

(iii) Push buttons : 10A, 440V, 1NO +1 NC flush mounted, IS 1336

(iv) Indicating lamps : 110V AC, Clustered LED type. (v) Control circuit protection : Link type HRC fuse with

Fuses Insulating base with holder



(vi) Control schemes : As per specification 3.13. Selector Switches: i) The rating and other features of the switches shall be suitable for the application. The

number of positions and the number of contacts required for each switch shall be as indicated in the schemes enclosed.

ii) Selector switches shall be stay put type, provided with properly designated escutcheon

plates clearly marked to show operating position. iii) Terminals carrying potential above 120V shall be shrouded to prevent accidental contact

with personnel. iv) Ammeter selector switches shall have make before break contacts. v) The switches shall be suitable for semi-flush mounting with the front plate and operating

handle projecting out. All connections to the switches shall be from the back.

vi) The arrangement for front mounting of these devices shall be such as to make them reasonably dust free so as not to interfere with normal operation.

3.14. Indicating Lamps: i) Indication lamps shall be complete with lens covers and holders.

ii) Each lamp shall be fitted with a durable resistance integrally wired in series within the

lamp. Alternatively, lamps with built in transformers are acceptable.

iii) The lamp cover (lens) shall be translucent of red colour.

iv) Bulbs and covers shall be interchangeable, easily replaceable from the front without the need for any special means.

v) Terminals having potential above 120V shall be shrouded to prevent contact with personnel.

3.15. Terminals: i) Terminals shall be stud type of copper material.

ii) Terminals shall be provided with transparent cover(s).



iii) Separate terminals shall be available for each termination of loop-in and loop-out power connections.

iv) Terminals shall be suitable for ring type copper cable lugs of size depending upon the

circuit rating. V) Also Test terminals shall be provided for metering & protection circuits 3.16. Labelling: i) Labels to identify all the main assemblies, sub-assemblies and components of the panel

shall be provided. ii) Name and rating plate/marking shall be provided as required by relevant standard

applicable to each component/assembly to be identified. iii) Labels shall be of two colour, three layer plastic material with matt or semi matt finish or

of the anodized Aluminium sheet. iv) All labels other than ―danger‖ or ―warning‖ labels shall have black lettering on a white

background. Danger label shall be as per applicable standard and shall not be fixed on to removable parts.

v) All labels shall be securely fixed on to the equipment by means of self tapping screws or

other approved means. vi) Stick-on type labels of good quality and permanent mounting shall be acceptable for

internally mounted components only.

3.17. Surface Treatment:

1. All metal parts and the surfaces(exterior & interior) of equipment, unless stated otherwise in case of reflectors, shall be degreased by dipping in hot alkaline solution and rubbed with wire brush to remove oil & scale from them & then rinsed in water. Alternatively, they may be shot/sand blasted.

2. Parts shall be pickled by dipping in hydrochloric acid tank to remove the rust from the

surfaces formed during storage of sheets & then rinsed to remove traces of the acid. The cleaning and pre treatment of all metal parts shall be as per applicable standards.

3. All parts shall then be subjected to a coat of red oxide primer paint.

4. All inside and outside surfaces of panel shall be spray painted with synthetic enamel of

the shade.

5. The surfaces to be painted shall then be prepared by phosphatizing to protect them from further rusting & to create a good bond with the paint. The pretreatment shall confirm to the applicable standard.



6. Paint thickness shall be as per applicable standard.

7. Electrostatic or powder painting shall be acceptable subject to purchaser‘s approval.

8. Wherever possible, finished parts shall be coated with peelable compound by spraying method to protect the finished product from scratches, grease, dirty and oily spots during handling and transportation.

3.18. Additional Requirements:

1. 1 No emergency trip push button (mechanical).

2. Mimic: A single line diagram showing the direction of power flow shall be dawn on the front of load break switch. The mechanical operation of switch shall automatically indicate ON/OFF status of both main switch as well as the earth switch in the mimic diagram.

3. 1 set of epoxy encapsulated copper busbar interconnection arrangement for

transformer.

4. Fluorescent lamps for sufficient illumination shall be provided and for that power

supply shall be provided from LT side of Substation.

5. DC Fluorescent lamps for emergency lighting shall be provided.

3.19. 11KV / 433 V TRANSFORMER: 3.19.1.1 General

The transformer shall be of 500 KVA, 11KV / 433 V, 3Ø, two winding, ONAN, Dyn 11, Oil immersed, Naturally cooled core type, for operation in highly humid tropical climate with range of temperatures varying from 5o C to 50o C , Lightning / Non-lightning areas suitable for outdoor installation with cable termination box with ± 5% off circuit tap changer in steps of 2.5% as per Technical Specification and IS 2026 with all fittings and accessories enclosed . The transformer is fed from HT switchgear. On the LT side, it is connected to LT switchboard through ACB Switchgear. 3.19.1.2.Transformer Rating and Over loading (i) Transformers shall be capable of delivering the rated current at a voltage equal to 105

percent of the rated voltage without exceeding the temperature limits.

(ii) Transformer shall operate satisfactorily without injurious heating at rated kVA, at any voltage within ± 10% of the rated voltage of the particular tap.



(iii) Transformers shall be designed for 50 Hz. +3%, - 5%, unless otherwise specified in data sheet.

(iv) Transformers for two or more limits of voltage or frequency or both shall operate

satisfactorily at its rated kVA without injurious heating under all the rated conditions of voltage or frequency or both, provided increase in voltage is not accompanied by decrease in frequency.

(v) Transformers shall be suitable for over loading as per IS 6600, unless specified otherwise. Off circuit tap switch, terminal bushings, other auxiliary components / equipment shall be designed for maximum permissible overloading. Short time over loading to the extent of 50% shall be considered for this purpose, for all transformers unless specified otherwise.

3.19.1.3.Short Circuit withstand capability i) Transformers shall be capable of withstanding thermal and mechanical stresses during 3

phase, line to line, double line to earth and line to ground dead short circuits at the transformer terminals, for a period specified, without any injury. Temperature of the windings prior to the short circuit to be considered for this shall be that corresponding to the maximum permissible value applicable to the overloading cycle specified.

ii) For this purpose, infinite supply system and solidly earthed systems shall be considered. 3.19.1.4. Flux Density i) The maximum flux density in any part of the core and yokes at normal voltage and

frequency shall be such that the flux density under over voltage condition shall not exceed the maximum permissible values for the type of laminations used and core construction adopted.

ii) In case of transformers with variable flux, the voltage variation, which would affect flux

density at every tap, shall be kept in view while designing the transformer.

iii) Transformers shall be designed to withstand the following over fluxing conditions:

110% of maximum density: Continuous for all transformers corresponding to rated voltage. 3.19.1.5.Magnetic circuit: (i) The cores shall be constructed from high grade, low loss, high permeability cold rolled

non-ageing grain oriented silicon steel laminations. Thickness of laminations shall be 0.3 mm or less surface insulation of laminations shall be rust resistant and have high inter laminar resistance. Insulation shall withstand annealing temperature as high as 850 deg.C. The insulation shall be resistant to the action of hot cooling medium.

(ii) The insulation structure for the core to bolts and core to clamp plates shall be such as to

withstand a voltage of 2000V AC for one minute.



(iii) Wherever the CRGO (Cold-Rolled Grain Oriented silicon steel) sheets are punched or

sheared into laminations, laminations shall be annealed in a non-oxidising atmosphere to relieve stresses and restore the original magnetic properties of CRGO sheets. The laminations shall be free of all burrs and sharp projections.

(iv) The design of magnetic circuit shall be such as to avoid static discharges, development of

short circuit paths within itself or to the earthed clamping structure and production of flux components at right angles to the plane of the laminations which may cause local heating.

(v) Ducts shall be provided where ever necessary to ensure adequate cooling. The winding

structure and major insulation shall not obstruct the free flow of cooling medium through such ducts.

(vi) All steel sections used for supporting the core shall be shot or sand blasted after

fabrication.

(vii) The finally assembled core and coil assembly shall be rigidly fixed to the tank to avoid shifting during transport, handling and short circuits. Adequate provision shall be made for lifting the complete core and coil assembly.

(viii) The supporting frame work of the cores shall be so designed as to avoid the presence

of pockets which would prevent complete emptying of the tank through the drain valve, or cause trapping of air during filling.

3.19.1.6.Windings (i) Transformers shall be suitable for solidly earthed neutral system.

(ii) The coil clamping arrangement and the finished dimensions of any ducts shall be such as

to not impede the free circulation of cooling media through the ducts.

(iii) The windings / and connection of transformer shall be braced to withstand shocks, which may occur during transport or due to short circuits, repeated peak loads and other transient conditions during service.

(iv) Windings shall be subjected to a shrinkage treatment before final assembly, so that no

further shrinkage occurs during service. Adjustable device shall be provided for taking up any possible shrinkage of coils in service if required.

(vi) The conductors shall be transposed at sufficient intervals in order to minimize eddy

currents and equalize the distribution of currents and temperature along the windings. (vii) Coil clamping rings shall be of steel or of a suitable insulating material. Axially

laminated material other than bake lite paper shall not be used.



(viii) Completed core and winding assembly shall be dried in full vacuum to eliminate presence of moisture. After drying process, the full assembly shall be impregnated immediately.

(ix) No strip conductor, wound on edge shall have a width exceeding six times its thickness.

(ix) The winding material shall be copper Windings shall not have sharp bends, which might

damage insulation and / or produce high dielectric stresses.

(x) Coils shall be supported using dried and high – pressure compressed wedge type insulation spacers at frequent intervals.

(xi) All threaded connections shall be locked. Leads from the winding to the terminal board

and bushings shall be rigidly supported to prevent injury during short circuits / vibration. (xii) Permanent current carrying joints in the windings and leads shall be welded or brazed. (xiii) Clamping bolts for current carrying parts inside the transformer shall be compatible with

liquid under all service conditions. 3.19.1.7. Tapping: (i) Tapping as specified shall be provided on the higher voltage winding of each transformer

and shall be arranged so as to maintain as far as possible the electromagnetic of the windings.

(ii) The Taps shall be changed by links. 3.19.1.8.Temperature Measurement i) Winding temperature shall be monitored with RTD‘s. The RTD leads shall be brought out

and connected to temperature scanner. ii) Each scanner shall have potential free Normally Open Contacts for alarm and trip contacts.

Temperature setting of each contact shall be independently adjustable at site. A manual reset type maximum temperature indicator shall be provided for each scanner.

iii) All contacts shall be rated to make 0.5 A (min) and break 0.2 A (min) at 110 V AC. All

contacts shall be wired to marshalling box. 3.19.1.9. Internal earthing arrangements All metal parts of the transformer with the exception of individual core laminations, core bolts and associated individual clamping plates shall be earthed internally.



3.19.1.10. Tests All the transformers shall be subjected to the following routine tests and one transformer shall be type tested at the manufacturer‘s works. Test procedure as per IS-2026 shall be adopted. 3.19.1.11 .Routine Tests

1. Transformer shall be fully assembled with all fittings and accessories including wheels

to ascertain that all the parts fit correctly. 2. Resistance of each winding of each phase at principal tap and at all other taps. 3. Voltage ratio at all taps. 4. Checking of voltage vector relationship. 5. Impedance voltage at rated frequency and principal tap, lowest and highest taps. 6. Load loss at rated current. 7. Zero sequence impedance at principal tap, rated frequency. 8. No load loss and no load current at rated frequency and 100%, 110% of rated voltage

on HV side. Test shall be repeated with 415V, 3 Phase supply connected to LV side (if the LV side rated voltage is more than 415V). No Load & Load Losses shall be as per CBIP / IS with tolerance.

9. One minute power frequency withstand voltage test. 10. Induced over voltage withstand test. 11. Polarity check, ratio check, measurement of secondary winding resistance, excitation,

characteristic curve, insulation resistance of all bushing CTs. 12. Calibration of winding temperature indicators.

The routine test certificate for each transformer in duplicate shall be furnished by the tenderer.

ii) Type test

1. Temperature rise test.

2. The Contractor shall submit Type Test certificates for similar capacity Transformer supplied by him elsewhere for (i) Short time withstands capability Test and (ii) Impulse Voltage withstand Test (iii) Dynamic short circuit withstand test showing no load losses and load losses at 75 degree C. The type test certificates should conform to the technical terms detailed in this specification.

3.19.1. 12. Additional Requirements:

1. Fluorescent lamps for sufficient illumination shall be provided and for that power supply shall be provided from LT side of Substation

2. DC Fluorescent lamps for emergency lighting shall be provided.



3.19.2.TECHNICAL PARTICULARS OF 11 / 0.433 kV Transformer

1. Power supply system in which transformer is to be used.

a) Primary side (HV) max. voltage : 12 kV

b) System earthling

- Primary side (HV) : Solidly earthed - Secondary side (LV) : Solidly earthed

2. Max. and min. 3 phase and ground Fault levels

- Primary side (HV) : 350 MVA

3. Direction of power flow : Bi-directional 4. Transformer application : industrial distribution 5. Transformer type

a) indoor / outdoor : outdoor

b) Dry type / oil filled : Oil filled c) Core type / shell type : Core type

6. Auto wound / Two winding / three : two winding Winding 7. Number of phases : Three 8 Rated frequency : 50Hz 9 Rated no load voltage: - HV winding : 11kV - LV winding : 433 V 10 Cooling : a) Cooling medium : Oil b) Method of cooling : ONAN



11 Rated kVA at no load voltage and Principle tap : 500 KVA 12 Overloading as per IS 6600 : Required 13 Max. temp. rise at rated KVA and Principle tap a) Top oil by thermometer method : 50 deg C Over design ambient temp of 50 Deg C b) Any winding (HV & LV ) by : 55 deg C resistance method over design ambient temp. of 50 deg C 14. Permissible Variations a) Percentage impedance : 4 .5 % voltage at rated current frequency, principle tap tap 75 deg C b) Frequency variation : +3%, -5% of 50 Hz c) Voltage variation : +/- 12% of rated voltage 15. Tappings a) Off-Circuit / ON load : Off Circuit b) Manual / Automatic : Manual, by changing

links, by isolating Power

c) No. of Steps : +5%, +2.5%, +0 –

2.5% -5% d) Percentage variation / step : 2.5 % e) Winding in which tappings are : HV required 16 Short circuit withstand capability : Not less then 2 secs of transformer on any tapping for 3 phase and line to ground faults across LV winding



17. Insulation a) One minute power frequency

withstand voltage HV winding : 28 kV RMS LV winding : 2.5kV RMS b) 1.2 x 50 micro second impulse withstand voltage level HV winding : 75 kV Peak c) Induced over voltage withstand HV winding kV (RMS) : As per IS 2026 Part III LV winding kV (RMS) : - do – 18. Windings insulation category a) HV – uniform / non – uniform : Uniform b) LVL – uniform / non – uniform : Uniform 19. Winding data

a) No. of winding : Two

b) Winding material : Copper

c) Winding connection - HV winding : Delta - LV winding : Star with neutral brought out

fully insulated

d) Vector groups (HV-LV) : Dyn 11 20. Core laminations

Type : CRGO Material : Silicon steel Thickness, mm : 0.3

21. Diagram required : yes

22. Parallel operation : Suitable for parallel operation

23. Transformer size & limitation & Construction data :



i. Type of installation : outdoor ii. Terminal Details : HT & LT suitable for Bus bar

connection iii. Fittings and accessories required : Lifting lugs, name plate,

terminal marking plate, bidirectional rollers, earthing lugs, winding temperature indicator with alarm and Trip contact

24. Class of Protection : IP23 25. Cable box : Suitable for 3C X 185 sq.mm 11 KV XLPE

aluminium cable on primary side and suitable for 3 runs of 3.5 C X 400 Sq.mm 1100V PVC /

XLPE aluminium armoured cable on secondary side

26. Tank : The transformer tank suitable for 500KVA as per the IS standard may be provided.

27. Oil : The insulating Oil in the transformer shall complied with IS 335 of latest issues.

28. Conservator :1) The total volume – 10 % of Total quantity of oil.

2) Shall be provided with drain plug and filling hole (30 mm dia with cover).

3) Plain oil level indicator on one side of the conservator with minimum oil level marking.

29. Radiator : Heat dissipation by fin type radiator 1.25mm thick.

30. Explosion vent : 1) Explosion vent like swan‘s neck is to be

fitted at an angle of about 75 Deg. 2) The diaphragm shall be made of hylam

sheet of 0.3mm thickness. 3) The pipe dia shall be 70 mm fixed by

welding on top of tank. 31. Breather : Dehydrating Silicagel Breather. 32. Painting : Paint should conform to IS of latest issues. 33. Bushings : The bushings (HV/LV) shall be provided

suitable for cable termination at cable box and as per IS.



34. Bushing Terminals : HT/LT bimetallic connectors conforming to IS shall be provided.

3.19.3. OTHER DETAILS: 1. General: The transformer shall be suitable for continuous run and for all type of loads with high efficiency, the transformer shall confirm to IS 2026/1997 IEC 726 & IS 11171 / 1985 reaffirmed in 1991 for dry type transformers as amended up to date. The supplier should give sufficient spacing between various terminals so that it can be properly terminated. 2. RTD’S: RTD‘s shall be embedded in transformer winding (both primary and secondary side) and the leads shall be brought out. The bidder shall supply Temperature Scanner to read the winding temperature. The temperature scanner shall have provision for generating ―winding temperature high‖ trip signal to HT switch gear. The temperature scanner shall be mounted in such a way that operator has access to monitor the temperature periodically. 3.Integration with BMS of Data Centre: Transformer monitoring panel shall be integrated with BMS of Data Centre. 3.20. LV 433V POWER PANEL: 3.20.1.LV BUS -1 INCOMER ACB -1 FROM TRANSFORMER 1 - 500KVA, 800A INCOMER ACB -1 FROM DG SET 1 - 385 KVA , 800 A OUTGOING MCCB TO CRITICAL LOAD UPS-1 - 160 KVA , 400A OUTGOING MCCB TO SERVICE LOAD UPS-1 - 50 KVA , 120A OUTGOING MCCB TO SERVER ROOM PAC POWER PANEL-1 - 160 KVA, 400A OUTGOING MCCB TO NET & MUX ROOM PAC POWER PANEL-1 – 50 KVA, 120A OUTGOING MCCB TO CRTICAL LOAD UPS OF CCC – 10 KVA, 40A OUTGOING MCCB TO CFM AC UNIT AT UPS ROOM1 - 20KVA, 90A OUTGOING MCCB TO PDB OF DATA CENTRE – 105 KVA, 160A OUTGOING MCCB TO LDB OF DATA CENTRE – 8 KVA, 40A SPARE MCCB – 160 KVA, 400 A SPARE MCCB – 50 KVA, 120 A 3.20.2.LV BUS -2 INCOMER ACB -2 FROM TRANSFORMER 2 - 500KVA, 800A INCOMER ACB -2 FROM DG SET 2 – 385 KVA, 800A OUTGOING MCCB TO CRITICAL LOAD UPS-2 – 160KVA, 400A OUTGOING MCCB TO SERVICE LOAD UPS-2- 50KVA, 120A OUTGOING MCCB TO SERVER ROOM PAC POWER PANEL-2 – 160KVA, 400A OUTGOING MCCB TO NET & MUX ROOM PAC POWER PANEL-2 – 50 KVA, 120A OUTGOING MCCB TO LDB & PDB OF CUSTOMER CARE CENTRE – 20KVA, 90A OUTGOING MCCB TO CFM AC UNIT AT UPS ROOM2 – 20KVA, 90A



OUTGOING MCCB TO COMFORT AC UNIT AT DATA CENTRE – 60KVA, 175A OUTGOING MCCB TO AC UNIT FOR CCC – 30 KVA, 120 A OUTGOING MCCB TO LDB & PDB OF 1st FLOOR OTHER THAN CCC – 40 KVA 120A OUTGOING MCCB TO LDB & PDB OF SECOND FLOOR – 65 KVA, 175A OUTGOING MCCB TO LDB & PDB OF THRID FLOOR – 65 KVA, 175A OUTGOING MCCB TO PDB OF LIFT – 10 KVA, 40A SPARE – 160 KVA, 400A SPARE – 50 KVA, 120 A 3.20.3.LV BUS BAR: Supply and erection of 2 Sets, 1200 Amps capacity floor mounting panel board (Cubical type) with bus bar chamber made up of 14/16 SWG MS sheet for 3 phase 4 wire system with suitable size of copper flat for phases and neutral, cable chamber, switch chamber and with 2 Nos. 25mm X 6mm tinned copper flat for the earth bus on the rear side of the panel board, necessary interconnections by copper flat of suitable sizes, suitable PVC colour sleeves for interconnecting copper flats/rigid copper wire, earth connections to all switches/bus bar by copper flats of suitable sizes from the earth bus, hylem sheet separation between bus bar and switches. 3.21. LT Circuit Breakers (ACB):

The 5Nos. ACB of 800 A, 4P, 50 KA, Mechanical Draw Out type with microprocessor over current and earth fault releases shall be provided for the following:

Incoming from Transformer – 1 Incoming from Transformer – 2 Incoming from DG set – 1 Incoming from DG set – 2

Bus coupler

The incoming ACBs with separate instrument compartment with 1 No.0- 500V Voltmeter with selector switch and 1 No. 0-800A Ammeter with selector switch, and RYB LED indication lamps with adequate capacity CTs and control fuses with fine wiring; suitable angle iron frame size of 40mm X 40mm X 6mm with powder coated painting over one coat of red primer and with numbering superscription of cables sizes, capacity of switches etc.

i) The ACB which is provided in incomer shall be of 4 Pole, air break and of Mechanical draw

out type. All current carrying contacts or the breaker shall be silver plated. The main contacts shall have ample area and contact pressure for carrying the rated current of the circuit breaker. Arc chute shall be provided on each pole and so fitted that it can be easily removed for inspection of the main contacts.

ii) The breaker shall have independent motorised spring charged stored energy mechanism.

The operating mechanism shall be trip free and designed to reduce mechanical shocks to a minimum during operation. The operating mechanism shall operate normally even when the circuit breaker is closed on to fault.



iii) All breakers shall be provided with mechanical trip push button, accessible from outside.

iv) All mechanism shall be designed to give trouble free service over extended periods and

shall not deteriorate with normal usage, require attention more often than every 1000 operations or once a year whichever is earlier. Each breaker shall be equipped with mechanical ‗ON‘ ‗OFF‘ indications visible from the front of the panel.

v) ACB shall be provided with earth fault, earth leakage and over current protections.

vi) ACB shall be of 4 pole construction arranged for simultaneous 4 pole manual / Auto closing and opening and for automatic tripping at short circuit and overload.

vii) Operating mechanism shall be quick make, quick break and trip free system. viii) The ON, OFF & TRIP positions of the ACB shall be clearly indicated so as to be visible

to the operator when mounted as in service. Operating handle shall be provided in front of the Kiosk.

ix) ACB shall be capable of withstanding the thermal stresses caused by overloads and short

circuits. The maximum tripping time under short circuit shall not exceed 20 milli seconds. Rated breaking capacity (rms) at 433 V is 10kA. Rated making current (peak) is 21kA.

x) ACB terminals shall be shrouded and designed to receive cable lugs for cable sizes

relevant to circuit ratings.

xi) ACB shall be integrated with BMS for monitoring and protection.

3.21.1. Technical Specification of ACB: (i) Type of breakers : Draw out type air breakers (ii) Standards applicable : IS 2516 (iii) (a) Rated service voltage : 433V, 3 Ph. 50 Hz (b) Highest system voltage : 500V, 3 Ph. 50 Hz (iv) Rated current at design : 800 A ambient for breakers (v) Symmetrical breaking capacity in kA (RMS) (a) at 415V, 0.25 PF : 20 kA RMS (b) at 440V, 0.25 PF : 20 kA RMS (vi) Making capacity kA (peak) : 47 kA peak (vii) Capacitor breaking capacity : Incomer :600A (min.) at 440V



Outgoing : 300 A (min.) (viii) 1 sec. short time rating kA : 20 kA RMS (RMS) (a) With release in any : 20 kA RMS setting (ix) Thermal release setting : 600-120 A ranges (temp.compensated) (x) (a) Short circuit release : 2-4/3-6kA range (b) Short circuit release : 0.1 to 0.5 sec. mechanical timer setting range timer/static trip release (xi) Operating mechanism a)Fixed trip/trip free : Trip free b) Spring assisted /spring : Stored energy mechanism Charged stored energy c) Electrical operation / : BOTH Manual operation xii) Auxiliary contacts a) Type : Silver plate copper contents b) Number : 6 NO + 6 NC c) Breaking capacity at : 5A 440 V AC

3.22. MODULAR CASE CIRCUIT BREAKERS (MCCB):

3.22.1.GENERAL:

i) MCCBs shall be of 4 pole construction arranged for simultaneous 4 pole manual / Auto closing and opening and for automatic tripping at short circuit and overload.

ii) Operating mechanism shall be quick make, quick break and trip free system.

iii) The ON, OFF & TRIP positions of the MCCB shall be clearly indicated so as to be visible to the operator when mounted as in service. Operating handle shall be provided.

iv) MCCBs shall be capable of withstanding the thermal stresses caused by overloads and short circuits. The maximum tripping time under short circuit shall not exceed 20 milli



seconds. Rated breaking capacity (rms) at 433 V is 10kA. Rated making current (peak) is 21kA.

v) MCCB terminals shall be shrouded and designed to receive cable lugs for cable sizes

relevant to circuit ratings.

vi) MCCB shall be provided with plug-in bases with safety interlocks and draw out assemblies.

vii) MCCB shall be integrated with BMS for monitoring and protection.

3.22.2. TECHNICAL: (i) Type of MCCB : Fixed type air break (ii) (a) Rated service voltage : 433V, 3 Ph. 50 Hz (b) Highest system voltage : 500V, 3 Ph. 50 Hz (iii) Rated current at design : 63A - 400A ( as per scheme )

ambient for breakers

(iv) Thermal release setting : 80% - 150% ranges (temp. compensated)

(v) (a) Short circuit release : as per standard range (b) Short circuit release : 0.1 to 0.5 sec. mechanical timer setting range timer/static trip release (vi) Operating mechanism

Electrical operation / : Both Manual operation (vii) Auxiliary contacts a) Type : Silver plate copper contents b) Number : 2 NO + 2 NC c) Breaking capacity at 440V AC : 5A 3.22.3. MCCB ON LV PANEL-I

TO CRITICAL LOAD UPS-1 TO SERVICE LOAD UPS-1

TO SERVER ROOM PAC POWER PANEL-1 TO NET & MUX ROOM PAC POWER PANEL-1 TO CRTICAL LOAD UPS OF CUSTOMER CARE CENTRE



TO CFM AC UNIT AT UPS ROOM1 TO PDB OF DATA CENTRE TO LDB OF DATA CENTRE

SPARE - 2 Nos. 3.22.4. MCCB ON LV PANEL-II

TO CRITICAL LOAD UPS-2 TO SERVICE LOAD UPS-2 TO SERVER ROOM PAC POWER PANEL-2 TO NET & MUX ROOM PAC POWER PANEL-2 TO LDB & PDB OF CUSTOMER CARE CENTRE

TO CFM AC UNIT AT UPS ROOM2 TO COMFORT AC UNIT AT DATA CENTRE TO LDB & PDB OF FIRST FLOOR OTHER THAN CCC TO LDB & PDB OF SECOND FLOOR TO LDB & PDB OF THRID FLOOR TO PDB OF LIFT

SPARE – 2 Nos.

3.23. BUSBARS : ALUMINUM RATING : 1200 AMPS The Phase Bus bar shall be 2R of 25 x 6 mm. and Neutral bar shall be of 1R of 25 x 6 mm. The Earth bar shall be 2 Runs of 50 x 12mm. There shall be Two Sets of Metering Compartment for Incomer 01 and 02 and each shall be incorporated with the following.

i) 3 Nos. Dual Core tape wound CTs of ratio 1000 / 5 A of Class1.0 for measurement and class 5P10for Protection. The CT burdenshall be 15VA.

ii) 1 No. Load Manager with RS 485 Interface with Maximum Demand Controller. iii) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided. iv) Single phase preventer shall also be provided.

There shall be One Set of Metering Compartment for DG Incomer incorporated with the following.

i) 3 Nos. Dual Core tape wound CTs of ratio 1000 / 5 A of Class1.0 for measurement and class 5P10for Protection. The CT burden shall be 15VA.

ii) 1 No. Load Manager with RS 485 Interface without Maximum Demand Indication. iii) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided.



3.24.BUSCOUPLER 800 AMPS 4P ACB 50 KA (Ics) with standing Capacity of Electrically draw out type and with Microprocessor based releases (with Over current / Earth fault/ Short circuit / shunt trip coil with under voltage releases ) …01No. 3.25.INTERLOCKING ARRANGEMENT : Electrical and mechanical interlocking arrangement shall be provided between the INCOMER # 01, # 02, DG INCOMER and Bus Coupler 3.26. Technical Compliance for Diesel Generator : 3.26.1.Scope: The qualifying bidder has to supply, install and commission DG set comprising of 2 Nos. 385 KVA, for the Data Centre/ Disaster Recovery Centre as per following requirements & specifications as per the detailed Technical Specifications & drawings as given in the tender. 3.26.2.Introduction: Two DG Sets of each 385 KVA prime output capacity is required for this project. The set shall automatically start one after the other upon mains power failure depending on the line loads, run up to full speed within 6 seconds of power failure. The set shall be provided with a multiple start mechanism with indication of alarm for ―failed to start‖ condition. A Tachometer switch shall provide control for the start mechanism and also for the "run‖ indications. The set shall be skid mounted on independent foundation. The acoustic treatment shall ensure a maximum sound pressure not more than 68 dB (A) at 1 meter distance during the day and 45 dB (A) at the neighbour‘s premises during night, while running on partial or full load. This condition shall apply to the engine exhaust noise levels also. A vertical type ―Critical‖ silencer shall be fitted on the exhaust pipe after the flexible coupling to reduce the exhaust noise. The exhaust gases shall be piped to the top of the building covering full height of the building. The pipe shall be thermally insulated with ceramic insulation and covered overall with aluminum jacketing. The exhaust pipe and Critical Silencer shall be fixed on a steel structure which shall be rigidly fixed to external wall vertically. 3.26.3.Specification for Equipments: A. ENGINE The basic diesel engine shall be Water cooled diesel engine with exhaust Turbo charging and charge air cooling, four valve, individual cylinder heads with exhaust valve rotators, fuel oil pump, fuel duplex filter with diverter valve, fuel injection system, electronically controlled injection, lube oil circulation and coolant thermostats for main cooling and charge air cooling circuit, necessary drives, dry exhaust manifolds, vibration dampers, all necessary pipe work,



electric starter suitable for 24 V DC, Generator 28V DC, Electronic speed governor, Fuel filters, Oil dip stick, Oil extraction equipment with hand pump, set of air filters including maintenance indicators, exhaust bellows with connecting flange.

Diesel Engine – Diesel Engine, water cooled, Naturally Aspirated, developing 385 KVA @ 1500 RPM, under NTP conditions of BS: 5514, with Dry Type Air Cleaner, Compact Radiator with Recovery Bottle and Pusher type Fan, Engine with Coolant, Engine mounted panel with wiring harness, Holset Coupling and Industrial Silencer, as per engine manufacturers design standards. B. GENERATOR Two Nos. of Standard design Alternator, rated at 385KVA Output, 0.8 PF, 415 Volts, 3 Phase, 4 wires, 50 cycles/sec, 1500 RPM, self-excited and self regulated, with brushless excitation, Self- ventilated, Screen Protected Drip Proof, Insulation Class ―H‖, enclosure IP 23. The A.C. Generator shall be Horizontal foot mounted single bearing type and shall be fitted with Automatic Voltage Regulator (AVR) for Voltage regulation of +/- 1% or better having response time not more than 1 second. The Alternator generally conforms to BS: 5000/IS: 4722 and suitable to deliver output of the engine capacity having 385 KVA. AUTO START LOGIC The DG set with enclosure and Auto Start Logic. The Panel should have provision to receive reference EB Supply through potential free contacts to enable connection of external audio alarm in case EB Supply has resumed. Separate battery charger cost to be indicated and the reference EB Supply can be used to charge the batteries. The Auto Start Logic shall be in such a way that the moment EB supply has failed or if the voltages reduce to a pre-determined level, it shall be detected through a voltage monitor and a command shall be given to DG to start with a timer.

After the DG voltage has built up to a certain level, the command for changing over of motorized MCCBs from EB to DG or vice versa shall be given. When the EB supply gives normal voltage or has resumed, the command to change over shall be issued with a timer. However, the stopping of the DG shall be only after the DG has run for about 5 minutes on no load basis for it to cool down.

D. BATTERY CHARGER AND BATTERY 24 Volts Battery with Float cum boost charger. Control Panel – Cubicle type, floor mounting Control Panel, with hinged doors, bottom gland plate and accommodating the following:

1-No. ACB or Molded Case Circuit Breaker 3-No.‘s Ammeters /1 No. Ammeter with Selector Switch

1 No. Voltmeter with Selector Switch 1 No. frequency meter 1 Set Pilot Lamps LOAD ON/GENERATOR ON



1 Set Instrument Fuses E. CABLES Power cables & Control cables are interconnected to use between Generator and Auto Sync Auto load Sharing panel. The required cables for all auxiliary equipment are to be included in the scope of supply.

All Starters and auxiliary devices / drives if any required should be Included in the scope of supply.



3.26.4. Audio Alarm and Indicators:

A separate 24 Window annunciation panel shall be installed in the panel for indicating the following conditions on both sets. A common alarm shall also be sound locally. • Engine Run Condition • Set failed to start • High Water temperature • Low Lub Oil Pressure • Engine Over Speed • System Power ON • MCCB Open • Under Voltage • Over Voltage • Frequency Out of Limit • Over current trip • Earth Fault • Reverse Power Trip • Reverse KVA Trip • Low and High Fuel level • Fail to Synchronize • Load exceeding limit • Low and High Coolant level in the radiator • High Alternator Stator temperature • High Alternator Bearing temperature Alarm • Restricted earth fault trip. 3.26.4.1. INDICATORS: The indication shall be provided with the following:- • Set On • Load On • Auto / Manual Load • DG Set Trip due to Over Load • DG Set Trip due to Short Circuit • EB supply fails • EB supply restored and Reset • Battery charging (Trickle charger with Volt Meter and Ammeter required) Indicator for Battery charging and discharging in one Ammeter shall be provided. • Mains On



3.26.5. BATTERY CHARGER: Proper DC Charging circuits shall be incorporated in the control panel to boost and trickle charge the24V DC batteries used for starting the engine. The Control circuit voltage shall be 48 V DC.

Proper DC charging circuits shall be incorporated in the Control Panel to boost and trickle charge the 48V batteries used to power the control circuit. The selection of battery shall be done in such a way that the batteries will be able to power the circuit even if charging does not take place for 48 hours. 3.26.6. AUDIO ALARM: Audio Alarm along with indication shall be provided whenever the synchronizing Batteries as well as the control circuit batteries reach a voltage level below 20 V and 40V respectively. 3.26.7. AUTO MANUAL SELECTOR SWITCH: The function of the Auto Manual Selector switch is to • Make the operation of the entire panel including operation of change over MCCBs. DG Set

starting, stopping etc., selectable between Auto & Manual. • Care should be taken in such a way that the panel does not remain partly in Auto and

partly in Manual mode when the switch is operated. 3.26.8.MEASURING DEVICES IN CONTROL PANEL: The following Meters shall be provided in the Control Panel Compartment:- • DC Ammeter in the DG Charging Kit • DC Voltmeter to measure battery voltage • DC Ammeter in the trickle charging Kit. • DG Set speed in RPM • Hours Run Meter • 2 Nos. CTs of 1000/ 5 A of Class 5 P 10 for Protection. 3.26.9. Base Frame – Sturdy, fabricated, welded construction, channel iron Base Frame for mounting the above Engine and Alternator. 3.26.10. Fuel Tank – Necessary liters capacity Fuel Tank with mounting brackets to run for 8 hours complete with level indicator, fuel inlet and outlet, air vent, drain plug, inlet arrangement for direct filling and set of fuel hoses for inlet and return. Diesel storage requirement for minimum 24 hours should be maintained.



3.26.11. Battery – Dry uncharged maintenance free batteries with leads and terminals. 3.26.12. Management - The DG set should be manageable via Building Management System/ NOC with MODBUS Protocol with RS 485 Communication Port so that all software features like Diesel Consumption, Power, and Current etc. can be monitored on the BMS screen. 3.26.13.DUTY CONDITIONS: The Generator shall be capable of starting and running continuously for about 12 hours. 3.26.14.GENERAL o The DG must be stiffened properly and reading for noise and vibration at full variable

condition to be checked before dispatch to Site. Expansion bellows to be provided before and after silencer.

o The Qualifying bidder would be responsible for conducting the Load Test of D.G set for 6

hours with Diesel (Load to be arranged by the Tenderer). o All consumables towards testing of DG at the factory and project site shall arranged by the

Qualifying bidder till the issue of commissioning certificate. o The qualifying bidder shall obtain permission / approval from the Board for the installation

of the DG Set as per exact Rules at their own cost. o BMS integration through MODBUS protocol with RS485 interface should be provided o DG set shall be installed outdoor. Note : The cost Diesel will be reimbursed by TNEB on the actual consumption in DG set operation. Normal Diesel shall be used. 3.26.15. All HV,/ LV Switch Gear panels, relays shall have adequate provision for extending the status SCADA (BMS) and for tripping/closing of breaker /DG sets from SCADA (BMS) . 3.26.16. Necessary design, supply and commissioning of adequate battery provisions with battery stands, battery charges of static type with float cum boost charging facilities ( with standby charger ). The area shall be provided with exhaust fan, acid proof flooring, etc. The battery capacity shall be of sufficient Ampere Hour capacity to cater the HV /LV switch Gear operation and other requisite DC operation of 11KV/433V Sub-station. 3.26.16.1 Adequate DC ditribution panel provision may be made for catering the various purpose in the room provided in Switch Gear area



4.0.SUB POWER PANEL 4.1. PAC SERVER ROOM

Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB POWER PANEL with necessary foundation channels, etc., The cost shall also including unloading, positioning, etc.,

The panel shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: PANEL -1 400 AMPS 4P MCCB 35 KA (Ics) Withstanding Capacity of Motorized … 01No. PANEL-2 400 AMPS 4P MCCB 35 KA (Ics) Withstanding Capacity of Motorized … 01No. OUTGOING: PANEL-1 Suitable MCCB with required withstanding capacity for each unit of PAC. Spare MCCB – 1 No. PANEL-2 Suitable MCCB with required withstanding capacity for each unit of PAC. Spare MCCB – 1 No. BUSBARS: RATING:400 AMPS Suitable BUSBAR for the above rating shall be provided. There shall be One set of Metering Compartment incorporated with the following:-

i) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided.



ii) All outgoing terminals should be monitored through BMS. Voltage, Current, Frequency, Power.

4.2.NETWORK & MUX ROOM Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB POWER PANEL with necessary foundation channels, etc., The cost shall also including unloading, positioning, etc.,

The panel shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: PANEL -1 120 AMPS 4P MCCB 35 KA (Ics) Withstanding Capacity of Motorized … 01No. PANEL-2 120 AMPS 4P MCCB 35 KA (Ics) Withstanding Capacity of Motorized … 01No. OUTGOING: PANEL-1 Suitable MCCB with required withstanding capacity for each unit of PAC. Spare MCCB – 1 No. PANEL-2 Suitable MCCB with required withstanding capacity for each unit of PAC. Spare MCCB – 1 No. BUSBARS: RATING: 120 AMPS Suitable BUSBAR for the above rating shall be provided. There shall be One set of Metering Compartment incorporated with the following:-

i) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided.



ii) All outgoing terminals should be monitored through BMS. Voltage, Current, Frequency, Power.

4.3. ATS (Automatic Transfer Switch) Suitable size double-input-single-output Automatic Transfer Switches consisting of an inherently double throw power transfer switch mechanism and a microprocessor controller to provide automatic operation. Each such switch shall be with required number of poles, ampere capacity, voltage withstand and close-on ratings. The double-input to each ATS shall be fed from of Precision Air Conditioning (PAC) Supply Panels while the single output shall feed the PAC cooling unit to be installed at Data Centre Server Room & Network/ MUX room so as to ensure N+1 topology for redundancy of the critical system of precision cooling for the data centre 4.4. UPS

POWER PANEL FOR UPS OUTGOING SUPPLY (160 KVA UPS – 1 & 2) Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB POWER PANEL with necessary foundation channels, etc., The cost shall also including unloading, positioning, etc.,

The panel shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: PANEL -1 400 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized … 01No. PANEL-2 400 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized … 01No. OUTGOING: PANEL-1 32 AMPS TPN MCCB 35 KA Withstanding Capacity (RACK). 21 Nos. 120 AMPS TPN MCCB 35 KA Withstanding Capacity (Z10 SYSTEM) - 1 No. 16 AMPS TPN MCCB 35 KA Withstanding Capacity (Tape Library) 1 No. 32 AMPS TPN MCCB 35 KA Withstanding Capacity (Storage) - 1 No.



Spare MCCB – 1 No. PANEL-2 32 AMPS TPN MCCB 35 KA Withstanding Capacity -- 21 Nos. 120 AMPS TPN MCCB 35 KA Withstanding Capacity (Z10 SYSTEM) - 1 No. 16 AMPS TPN MCCB 35 KA Withstanding Capacity (Tape Library) 1 No. 32 AMPS TPN MCCB 35 KA Withstanding Capacity (Storage) - 1 No. Spare MCCB – 1 No. BUSBARS: RATING: 400 AMPS Suitable BUSBAR for the above rating shall be provided. There shall be One set of Metering Compartment incorporated with the following:-

i) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided. ii) All outgoing terminals should be monitored through BMS. Voltage, Current, Frequency,

Power. 4.5. POWER PANEL FOR SERVICE LOAD UPS OUTGOING SUPPLY (50 KVA UPS – 1

& 2) with Synchronization Panel. Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB POWER PANEL with necessary foundation channels, etc., The cost shall also include unloading, positioning, etc.,

The panel shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: (from UPS 1 &2) 120 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized … 02Nos. OUTGOING: 63 AMPS TPN MCCB 35 KA Withstanding Capacity - 4 Nos. BUSBARS:



RATING: 300 AMPS Suitable BUSBAR for the above rating shall be provided. There shall be One set of Metering Compartment incorporated with the following:-

i) RYB Indicating Lamps of LED Clustered type and Control MCBs shall be provided. ii) All outgoing terminals should be monitored through BMS. Voltage, Current, Frequency,

Power. SYNCHRONISATION CONTROL PANEL: Suitable required synchronization Panel with meters, protection relays, control components, control and power wiring etc. shall be provided.

4.6. SUB POWER PANEL FOR POWER LOAD at UPS Room of Data Centre:


The Board shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: 160 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized .01Nos. OUTGOING: 63 AMPS TPN MCCB 35 KA Withstanding Capacity. 02Nos.

4.7. SUB POWER PANEL FOR LIGHTING LOAD at UPS Room of Data Centre:

Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB LIGHTING PANEL with necessary foundation channels, etc., The cost shall also including unloading, positioning, etc.,

The Board shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: 40 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized - 1Nos. OUTGOING: 20 AMPS TPN MCCB 35 KA Withstanding Capacity - 2Nos.

4.8. SUB POWER PANEL FOR LDB & PDB at UPS Room of Customer Care Centre:



Supplying, erecting, connecting and commissioning of FLOOR MOUNTED CUBICLE TYPE SUB POWER PANEL FOR LDB & PDB with necessary foundation channels, etc., The cost shall also including unloading, positioning, etc.,

The Board shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: 90 AMPS 4P MCCB 35 KA Withstanding Capacity of Motorized - 1Nos. OUTGOING: LIGHTING LOAD - 32 AMPS TPN MCCB 35 KA Withstanding Capacity - 1 No. POWER LOAD – 40 AMPS TPN MCCB 35 KA Withstanding Capacity - 2 Nos.

4.9. SUB POWER PANEL FOR CRITICAL LOAD UPS at Customer Care Centre:



4.10.SUB POWER PANEL FOR AC UNIT at Customer Care Centre:





4.11. SUB POWER PANEL FOR CFM UNIT at UPS ROOM (1&2):


The Board shall be incorporated with the following:- All MCCBs shall be of Thermal Magnetic Type with adjustable overloads and fixed short circuits INCOMING: Supply 1&2 Each 20KVA (90A) through Automatic Transfer Switch. Suitable Automatic Transfer Switch shall be provided with protection and control. OUTGOING: 63 AMPS TPN MCCB 35 KA Withstanding Capacity. 04Nos. 4.12. MCB DBs Supplying, erecting, connecting and commissioning the following MCB DBs with necessary foundation brackets / frame, interconnections and other associated accessories. The cost of providing adaptor box above the DB shall also be included. 4.13. LDB at Data Centre: LDB 1 & 2 - 4WAY TPN 3 TIER MCB DB INCOMER: 63 AMPS TPN MCB … 01No. OUTGOING: 6- 10 AMPS SP MCB .. 12Nos.

4.14. PDB at Data Centre: PDB 1, 2&3 - 4 WAY TPN 3 TIER MCB DB INCOMER : 63 AMPS TPN MCB .. 1 No. OUTGOING : 16 - 32AMPS SP MCB .. 12 Nos. 4.15. PDB for Service Load UPS PDB 1, 2 - 4 WAY TPN 3 TIER MCB DB INCOMER : 63 AMPS TPN MCB .. 1 No. OUTGOING : 16 - 32AMPS SP MCB .. 12 Nos. 4.16. LDB for Service Load UPS



LDB 1 & 2 - 4WAY TPN 3 TIER MCB DB INCOMER: 63 AMPS TPN MCB … 01No.

OUTGOING: 6- 10 AMPS SP MCB .. 12Nos.

4.17. LDB AT CUSTOMER CARE CENTRE LDB 1 - 4WAY TPN 3 TIER MCB DB INCOMER: 32 AMPS TPN MCB … 01No.


4.18. PDB AT CUSTOMER CARE CENTRE PDB 1- 4 WAY TPN 3 TIER MCB DB INCOMER : 40 AMPS TPN MCB .. 1 No. OUTGOING : 16 - 32AMPS SP MCB .. 12 Nos. 4.19. CUSTOMER CARE CENTRE UPS OUTGOING PDB PDB - UPS PDB 1 - 4 WAY TPN 3 TIER MCB DB INCOMER : 63 AMPS TPN MCB .. 1 No. OUTGOING : 15 AMPS SP MCB .. 12 Nos. LDB - UPS LDB 1 - 4WAY TPN 3 TIER MCB DB INCOMER: 32 AMPS TPN MCB … 01No.


LDB 1, 2 & 3 - 8WAY TPN 3 TIER MCB DB INCOMER: 63 AMPS TPN MCB … 01No. OUTGOING: 63 AMPS DP 100 mA ELCB .. 3 Nos.

6- 10 AMPS SP MCB .. 24 Nos.



4.20. TECHNICAL SPECIFICATION FOR LIGHTING SYSTEM: The specification covers design, manufacture, supply, delivery, erection, and commissioning

of illumination system for all rooms of data centre, Customer Care Centre at Chennai &

Disaster Recovery Centre.

This also includes supply, erection and commissioning of all associated parts and

accessories required for construction, operation and maintenance of complete system

comprising of lighting fixtures complete with lamps, supports and accessories, ceiling fans

complete with regulators and accessories, lighting panels, lighting wires, G.I. earthwire,

receptacles, switchboards, switches, junction boxes, pull out boxes complete with

accessories, power cables, conduits, and allied accessories for such illumination system.

There shall be provision for emergency lighting system from Service Load UPS to strategic

locations viz., corridors, server rooms, UPS room, BMS Room, NOC room, LT switchgear

room etc so that the operating personnel can safely find their way even during emergency of

a total AC failure. These lights will be normally ‗OFF‘ and will be switched ‗ON‘ automatically

when under voltage or total AC failure occurs in the main AC system. GLS (General lighting

Service) lamp down lighters in false ceiling area and Bulkhead fixtures in non false ceiling

areas are to be used.

The equipments and materials to be furnished under this specification shall be designed,

manufactured and tested in accordance with the latest revision of relevant Indian

Standards, IS : 3646.

The electrical installations shall meet the requirement of Indian Electricity Act - 2003.

DEVIATION FROM SPECIFICATION :

Normally the offer should be as per technical specification without any deviation. But

any deviation from this specification felt necessary to improve performance, efficiency,

utility and quality of the equipment must be mentioned in the Deviation Schedule with

reasons duly supported by documentary evidence. Such deviations suggested may or may not

be accepted by the Board. Deviations not mentioned in Deviation Schedule will not be

considered.

DESIGN CRITERIA :

There shall be main lighting system for full illumination under normal AC supply condition.

There shall be minimum lighting system for all important places during total failure of

AC supply with the help of supply from UPS via its DB.



The main lighting system shall operate through separate Lighting Distribution Boards (LDB)

which shall receive power from the L.T AC Utility switchboard installed at the UPS room.

The maintenance factor shall be taken as 0.6 and 0.7 for different outdoor and indoor lighting

systems respectively.

Illumination level for all the locations of data centre may be properly designed as per the

Illumination standards.

Server room illumination system should be automatic type based on the movement sensors.

Selection of lights should be based on their longevity, foot-candles emitted, ease of

maintenance (Changing of bulbs and no dust collectors) and cost. Selection of correct type of

fixture for all the locations of data centre shall be based on the requirements.

Temperature rise of different components shall be limited to the specified value as per

relevant standard over an ambient temperature of 500C. All equipments and accessories shall

be suitable for continuous operation.

All lighting fixtures complete with lamps, tubes and accessories shall be within the scope of

the bidder.

Light fittings shall be so arranged that the required lux values are maintained, with supply of

required fixtures and supports.

LIGHT FIXTURES:

The luminaries will be selected to suit architectural, functional and aesthetic requirement. For

office areas 4x18w or 2x36w fluorescent fixtures and for other areas energy saving

fluorescent lamps and high efficiency lamps will be used. Common areas will be provided with

1 x11w or 1x18w CFL lamps, decorative light fixture both surface mounted & recess mounted

shall be mirror optic low glare type with ‗V‘ shaped double parabolic cross louver. Reflector

shall be made out of high purity aluminium scientifically designed for high optical

performance.

All fluorescent tubes shall be bi-pin type and white coloured.

Bidder shall submit detailed calculation for reaching the required lux level. They shall

conform to the LUX levels at different locations by measurement. During commissioning, the

contractor shall arrange for measurement of achieved lux level at different points in presence

of TNEB representatives.



The distribution of fittings over the three-phase supply shall be such that any particular area

is not completely void of supply in case of failure in any phase.

One no. A-type Aluminium ladder of 2.5 metres vertical height shall be supplied by the

contractor for maintenance purpose.

4.24.ACCESSORIES :

Each fluorescent fixtures shall be furnished complete with suitable ballast, capacitors,

starters etc. as per individual requirement.

4.25.DRAWING AND CATALOGUE:

The contractor shall furnish with each copy of Bid, a typical layout drawing showing

lighting system inside the Data Center, Customer Care Centre, Power Room and DR Centre.

Leaflets /Catalogues of the lighting tube / lamps with fixtures, fittings etc. shall also be

submitted .

4.26. Cables and Terminations

4.26.1. Cable

All Power cables shall be of aluminium / copper conductors only. All control cables shall be of

solid or stranded copper conductors. The control cables used for mobile equipment shall be

flexible type. Power cables for 433 V AC and upto 1000 V DC and control cables for wiring

within the building shall be of PVC insulated and PVC sheathed armoured / unarmoured heavy

duty 1100 V grade. Cross-sectional areas of multi core power cables shall not exceed 400

sq.mm unless otherwise specified. Minimum cross-sectional area of power cable shall be 6

sq.mm in case of aluminium conductor and 1.5 Sq.mm in case of copper conductor. The

cross-sectional area of neutral conductor of multicore cables shall constitute about 50% of

phase conductor for cables having cross-sectional are of 25 sq.mm and above. However this

is not applicable for UPS distribution. For cables below 25 sq.mm as well as flexible trailing

cables, the neutral conductor shall be of same cross-section area as the phase conductor. All

cables 10 sq.mm and above shall be of stranded type.

PVC Cables: PVC insulated, XLPE Sheathed / PVC sheathed armored/unarmored heavy duty

cable shall be designed, manufactured and tested in accordance with IS : 1554 (PART - I).

The insulation shall consist of polyvinyl chloride compound suitably extruded with softeners

and plasticizers. The inner sheath shall be either vulcanized rubber or PVC. The outer sheath

shall be of XLPE compound. The armoring of multi-core cables where ever required shall be of

single layer galvanized steel round wire or flat strip.



ALL CABLE SHALL BE OF FIRE RATED

Cable Selection

The power cable sizes shall be adopted on the basis of current loading, ambient temperature

condition, method of installation and permissible voltage drop in each circuit. The minimum

cross-section of the cable shall be determined on the basis of available short circuit current

and tripping characteristics of the circuit protective devices. Color code will be maintained for

the entire wiring installation (i.e) Red, Yellow and Blue for the three phases, Black for neutral

and Green for earthing. Besides, ferruling will be provided with number coding and easy

identification for maintenance purposes.

4.26.2.Cable Terminations

Cable jointing shall be done as per the recommendations of the cable manufacturer. Jointing

shall be done by qualified cable jointers. Each terminations shall be carried out using brass

compression glands and cable sockets. Hydraulic crimping tool shall be used for making the

end terminations. Cable gland shall be bonded to the earth by using suitable GI Wire / tape.

Suitable identification tags with the feeder designation inscribed on an aluminum / G.I. Sheet

steel be tied to either ends of each cable.

Cables conduit tray

Cables shall be laid on cable trays/ racks wherever specified. Cable racks/ trays shall be of

perforated steel section slotted angles for suitable purpose. The trays / racks shall be

complete with plates, tees, elbows, risers and all necessary hardware. The steel trays shall be

painted. Cable trays shall be erected properly to present a neat and clean appearance.

Suitable cleats or saddles shall be used for securing the cables to the cable trays. The cable

trays shall comply with the following requirements:-

• The trays are ladder type and shall have suitable strength and rigidity to provide adequate

support for all contained cables.

• It shall not present sharp edges, burrs of projections injurious to the insulation of the wiring

/cables.

• If made of Sheet metal, it shall be adequately strength protected against corrosion or shall

be made of corrosion resistant material.



• It shall have side rails or equivalent structural members.

• It shall include fittings such as horizontal, vertical bends, tie rods, hooks etc., or other

suitable means for changes in direction and elevation of runs, fish plates and hard wire.

Cable support systems

Method of Laying Cables:

Cables laid exposed in racks/trays/hooks and routed from trenches to individual equipments

etc. shall be taken in embedded / exposed rigid G.I pipes or flexible conduits unless directly

terminated to the equipment in the panels located above the trench. Extra length of cables

shall be provided wherever possible for any future contingency to the extent of 10% of the

length of any section. The cables laid fully buried in ground or partly in trench and partly in

ground shall be armoured type. Cables are laid fully in rack/tray/hook or laid in G.I. pipes,

shall be also armoured type. The installation work shall be carried out in a neat workman like

manner by skilled, experienced and competent workmen particularly with experience in

jointing termination of aluminium conductor cables. Cables runs shall be uniformly spaced

properly supported and protected in an approved manner. All bends in runs shall be well

defined and made with due consideration to avoid sharp bending and linking of the cable. The

minimum bending radius of cables shall not be less than twelve times the overall diameter.

Cable installation shall be property co-ordinates at site with the routing of other services,

utilities and the cable routings with a view to avoid interference with any part of the building,

structure, equipment, utilities and services.

All cables shall be provided with identification tags indicating the cable numbers in

accordance with the cable/circuit schedule. Tags shall be fixed at both the ends of cable at

joints and at 20 m. spacing for straight runs. When a cable passes through a wall, tags shall

be of durable fibre of aluminum sheet with the numbers punched on them, and securely

attached to the cables with non-corrosive wire. For single core cables wire shall be non-

ferrous material. All cables shall be tested for proper insulation prior to laying.

The cable drums shall be transported on wheels to the place of work. The cables shall be laid

out in proper direction as indicated on the drum using cable drum stands. In case of higher

size cables, the laid out cables shall run over rollers placed at close intervals and finally

transferred carefully on to the trenches and racks. Care shall be taken so that links and twists

or any mechanical damage does not occur in cables.

Only approved cable pulling grips or other devices shall be used. Adequate length of cables

shall be pulled inside the switchboards, control panels, terminal boxes etc. so as to permit

neat termination of each core/conductor.

Control cables cores entering switchboard or control panels shall be neatly bunched and

strapped with PVC perforated tapes and suitably supported to keep it in position at the

terminal block.



All spare cores shall be neatly dressed and suitably taped at both ends. Power cable

terminations shall be carried out in such a manner to avoid strain on the terminals by

providing suitable clamp near the terminals.

All power cable terminations shall be by means of crimping type cable lugs. Control cables

shall be terminated by crimping or directly clamped in the terminal blocks by screws.

No jointing shall normally be made at any intermediate point in through runs of cables unless

the length of the run is more than the length of the standard drum supplied by cable

manufacturers. In such cases when jointing is unavoidable, the same shall be made by means

of standard cable jointing boxes/kits.

All cables entry openings in the equipment shall be sealed and made proof against entry of

creeping reptiles.

Laying of Cables on Racks / Trays / Brackets

All power cables in trenches and on structures shall be laid on racks and shall be clamped by

means of single or multiple galvanized MS saddles. The saddles shall be placed at an interval

of 1000 mm. in both horizontal and vertical straight runs, at each bend and turnings from

horizontal to vertical direction and vice versa.

All 1100 V grade power cables shall be laid touching each other. Multi-core control cables

shall be laid touching each other on trays and wherever required may be taken in two layers.

G I Ladder type cable racks shall be selected from two sizes viz 600 mm. and 1500 mm.

Ladder type trays shall be galvanized after fabrication. And inside the module shop only G I

perforated type cable trays shall be used.

Vertical spacing between cable racks/trays shall be 250 mm. Power cables of different voltage

grades shall be laid in separate racks / brackets / hooks. Control cables as well as signal and

communication cables shall be laid in separate trays. However, in cases where smaller size

power cables (below 16 sq.mm.) of fewer numbers are provided with suitable vertical barriers

are installed between them. As far as possible AC/DC Power cables shall be laid in separate

trays. Order of laying of various cables in racks/trays / brackets/hooks shall be such that

control cables are located at the bottommost tier and 1100 V grade cables at top tier.

Where there is possibility of mechanical damage, cable rack / trays shall be adequate

protected by sheet steel covers. For future installation of cables, provision shall be made to

keep 20% space as spare on each tray/rack/bracket.



Cables in Indoor Trenches

Cables shall be laid in indoor trenches wherever specified. Suitable angle iron brackets,

clamps, hoods and saddles shall be used for securing the cable in position.

Cables on Trays / Racks

Cables shall be laid on cable trays / racks wherever specified. Cable racks / trays shall be of

perforated steel section slotted angles for suitable purpose. The trays / racks shall be

complete with plates, tees, elbows, risers and all necessary hardware. The steel trays shall be

painted. Cable trays shall be erected properly to present a neat and clean appearance.

Suitable cleats or saddles shall be used for securing the cables to the cable trays. The cable

trays shall comply with the following requirements:-

• The trays are ladder type and shall have suitable strength and rigidity to provide adequate

support for all contained cables.

• It shall not present sharp edges, burrs of projections injurious to the insulation of the

wiring / cables.

• If made of Sheet metal, it shall be adequately strength protected against corrosion or shall

be made of corrosion resistant material.

• It shall have side rails or equivalent structural members.

• It shall include fittings such as horizontal, vertical bends, tie rods, hooks etc., or other

suitable means for cha8nges in direction and elevation of runs, fish plates and hard wire.

Installation

Cable trays shall be installed as a complete system. Trays shall be supported properly from

the building structure. The entire cable tray system shall be rigid.

Each run of the cable tray shall be completed before the installation of cables.

In- portions where additional protection is required , non-combustible covers / enclosure shall

be used.

Cable trays shall be exposed and accessible.

Where cables of different system are installed on the same cable tray, non- combustible solid

barriers shall be used for segregating the cables.



Cable trays shall be grounded by two nos. earth continuity wires. Cable trays shall not be

used as equipment grounding conductors.

CABLES / TERMINATIONS

Supplying, Laying, connecting and commissioning 1.1 KV Grade AYFY /AYWY (or) YFY / YWY

Underground Armoured cables with necessary clamps, screws, etc. in the following methods.

The cost of laying of AYFY /YFY/YWY cables 1.1KVgrade on the existing cable tray or in

underground trench or on wall on MS angle supports, including fixing of indication tags on

following cables. This also includes necessary GI spacers, saddles, screws, etc.,

CABLES LAID IN THE CABLE TRAY / BARE GROUND

The COST OF THE CABLE LAID in TRAY/ CLAMPED ALONG WALL / COLUMN along with all

necessary accessories shall be included.

NOTE: Supply of Anchor Fasteners and necessary 1.5 mm. thick GI Flat, clamps shall be

included in the laying cost.

i) 3 1/2 x 400 Sq.mm. ALU.

ii) 3 1/2 x 185 Sq.mm. ALU.

iii) 3 1/2 x 50 Sq.mm. ALU.

iv) 3 1/2 x 25 Sq.mm. ALU.

v) 4 x 16 Sq.mm. ALU.

vi) 4 x 10 Sq.mm. Cu.

Supplying, terminating, connecting and commissioning the above Underground armoured

cables with double compression type Cable glands. The cost of earthing earthing gland

copper strips/wires shall also be included. The cables shall be terminated with heavy duty

Copper / Aluminum lugs after crimping. End termination of the below cable sizes using (i)

double compression weather proof glands with hoods at equipments. The termination shall be

made with Dowell‘s lugs/sockets only.

3 1/2 x 400 Sq.mm. ALU.

3 1/2 x 185 Sq.mm. ALU.

3 1/2 x 50 Sq.mm. ALU.



3 1/2 x 25 Sq.mm. ALU.

4 x 16Sq.mm. ALU.

4 x 10Sq.mm. Cu.

4.27. POWER SOCKETS & WIRING ( ALL CONDUITS ABOVE FALSE CEILING SHALL

BE PROPERLY FIXED ON RCC CEILING)

Supplying, laying, connecting and commissioning 2Runs of 4 Sq. mm and 1Run of

2.5Sq.mm.PVC Insulated flexible copper cable enclosed in 16 SWG thick MS conduits in ceiling

/wall / partitions or laid in open fashion above false ceiling with necessary clamps, screws

etc., from DB to Power points.

Supplying, and fixing 5/15 AMPS Switched Socket combined in Manufacturer‘s MS mounting

box fixed flush with the wall/ partitions with necessary accessories as Raw Power.

4.28. RECEPTACLE WITH PLUG :

All receptacles shall be of flush mounting type complete with individual plug and switches.

The receptacle shall be 15A/230V, 2-Pole, 3-Pin type with 3rd pin grounded and suitable for

indoor and outdoor installation.

4.29. SWITCH AND SWITCHBOARD:

All switchboard/boxes shall be fabricated from 14 SWG sheet steel and shall be hot dip

galvanised.

All switchboards shall have adequate space to accommodate all accessories and wires.

All switches shall have quick make and quick break mechanism. Small duty switches shall be

piano type with service marking on the switches. The switches shall be standard product of

reputed manufacturer and shall conform to relevant Indian Standards.

4.30. MAINS WIRING

HV Cables:

From HV panel to Transformer

Supplying, laying, connecting and commissioning 11 KV, 3 x 120 Sq.mm XLPE, Aluminium

power cable with necessary accessories viz. Cable termination Kit, cable gland etc. from HV

Panel to Transformer HV through underground cable trench.



LV Cables:

Incoming to LV Main Panel:

Transformer to LV Main Panel

Supplying, laying, connecting and commissioning 2 runs of 1.1 KV, 3½ x 400 Sq.mm,

Aluminium power cable with necessary accessories viz. Cable termination Kit, cable gland etc.

from both the Transformer LV terminal to LV Main Panel through underground cable trench.

DG Set to LV Main Panel

Supplying, laying, connecting and commissioning 2 runs of 1.1 KV, 3½ x 240 Sq.mm,

Aluminium power cable with necessary accessories viz. Cable termination Kit, cable gland etc.

from both the Transformer LV terminal to LV Main Panel through underground cable trench.

Outgoing from LV Main Panel:

Critical Load UPS- 1&2 (160 KVA Each)- 3 ½ x 240 Sq.mm

Supplying, laying, connecting and commissioning of 1.1 KV, 3½ x 240 Sq.mm, Aluminium

power cable with necessary accessories viz. Cable termination Kit, cable gland etc. from both

the LV panel to critical load ups sub power panel through underground cable trench.

Service Load UPS- 1&2 (50 KVA Each)- 3 ½ x 25 Sq.mm



the LV panel to service load ups sub power panel through underground cable trench.

Server room PAC Power Panel-1&2 (160 KVA)- 3 ½ x 240 Sq.mm



the LV panel to server room PAC sub power panel through underground cable trench.

Network & MUX room PAC Power Panel-1&2 (50 KVA)- 3 ½ X 25 Sq.mm



the LV panel to Network & MUX room PAC sub power panel through underground cable

trench.

Critical Load UPS of CCC (10KVA)- 3½ x 25 Sq.mm

Supplying, laying, connecting and commissioning of 3½ x 25 Sq.mm, Aluminium power cable

with necessary accessories viz. Cable termination lugs, cable gland etc. from both the LV

panel to critical load ups of CCC sub power panel through underground cable trench.



CFM AC Power Panel-1&2 (20KVA)- 3½ x 25 Sq.mm

Supplying, laying, connecting and commissioning of 3½ x 25 Sq.mm, Aluminium power cable


panel to CFM AC Unit sub power panel through underground cable trench.

CCC AC Unit Power Panel (30KVA)- 3 ½ X 25 Sq.mm

Supplying, laying, connecting and commissioning of 3.5 X 25 Sq.mm, Aluminium power cable


panel to CCC AC unit sub power panel through underground cable trench.

Comfort AC Unit Power Panel(60KVA)- 3 ½ X 120 Sq.mm

Supplying, laying, connecting and commissioning of 3.5 X 120 Sq.mm, Aluminium power

cable with necessary accessories viz. Cable termination lugs, cable gland etc. from both the

LV panel to Comfort AC Unit sub power panel through underground cable trench.

Data Centre PDB (105 KVA)- 3 ½ X 120 Sq.mm

Supplying, laying, connecting and commissioning of 3.5 X 120 Sq.mm, Aluminium power

cable with necessary accessories viz. Cable termination lugs, cable gland etc. from both the

LV panel to Data Centre PDB sub power panel through underground cable trench.

Data Centre LDB (8 KVA)- 3 ½ X 25 Sq.mm



panel to Data Centre LDB sub power panel through underground cable trench.

CCC LDB & PDB (20 KVA)- 3 ½ X 25 Sq.mm



panel to CCC LDB & PDB sub power panel through underground cable trench.

WIRING (ALL CONDUITS ABOVE FALSE CEILING SHALL BE PROPERLY FIXED ON

RCC CEILING)

Supplying, wiring, connecting and commissioning the Light Points with 3 Runs of

1.5Sq.mmPVCInsulated multi stranded copper conductor wires enclosed in 16 SWG thick MS

Conduits concealed in wall/ ceiling /partitions or laid in open fashion above false ceiling with

necessary clamps, screws, etc., including supplying and fixing 5AMPS SWITCH mounting box

fixed flush with the wall.

One Light Controlled by one Switch.



Supplying, wiring, connecting & commissioning the light points with 3 Runs of 1.5Sq.mm.PVC

insulated flexible copper conductor wires enclosed in 16SWG Thick MS Conduits concealed in

wall/ceiling/ partitions or laid in open fashion above false ceiling with necessary clamps,

screws, etc. for additional points.

Supplying, wiring, connecting and commissioning the Light Points with 3 Runs of 2.5Sq.mm

PVC Insulated multi stranded copper conductor wires enclosed in 16 SWG thick M S Conduits

concealed in wall/ ceiling /partitions or laid in open fashion above false ceiling with necessary

clamps, screws, etc., light fitting control by 6 AMPS SP MCB control including primary and

secondary points.

NOTE:

THE COST OF SUPPLYING, LAYING & PULLING CIRCUIT MAINS WIRING WITH 3Runs of

2.5SQMM. PVC INSULATED COPPER CONDUCTOR WIRES IN M S CONDUITS SHALL BE

INCLUDED IN THE POINT RATE.

UPS POWER WIRING

Supplying, laying, connecting and commissioning 4 core 4 Sq.mm Copper flexible cables in

the cable tray with necessary clamps, screws etc., from DB to PowerPoint.

Supplying, and fixing 5/15 AMPS Switched Socket combined of MS mounting box fixed flush

with the wall/ partitions (or) in open fashion with necessary accessories (or) with a M S

powder coated clamp to be fixed on the roof but inside the false flooring and with necessary

accessories like clamps, screws, etc.,

Supplying, and fixing 5 AMPS Switched Socket combined of MS mounting box fixed flush with

the wall/ partitions with necessary accessories in BMS Room.

Supplying, and fixing 5/15 AMPS SWITCH in manufacturer‘s MS mounting box fixed flush

with the wall/ partitions with necessary accessories for OHP.

Supplying, erecting, connecting and commissioning 32Amps TPN + E metal clad plug and

sockets in M S enclosure with 32Amps 4Pole MCB with necessary foundation arrangements,

interconnections, etc. for 3Phase server racks.

Supplying, erecting, connecting and commissioning 3 x 5Amps socket with 1No. 15Amps

switch in manufacturer's M S mounting box with necessary Accessories for tables.

Supplying, laying, connecting and commissioning 3Runs of 2.5Sq.mm.PVC insulated

multistranded copper conductor wires in M S conduits with necessary accessories for UPS

Sockets.



Supplying, laying, connecting and commissioning 2Runs of 4 Sq. mm and 1Run of

2.5Sq.mm.PVCInsulated flexible copper cable enclosed in 16 SWG thick MS conduits in ceiling

/wall / partitions or laid in Open fashion above false ceiling with necessary clamps, screws

etc., from DB to Power points for UPS Sockets.

4.31. EMPTY PVC CONDUITS

Supplying and laying the following PVC Conduits concealed (or) open in wall/ceiling/false

ceiling with necessary accessories clamps, screws etc. with 1 Run of 16SWG G.I. Fish wire.

25mm DIA PVC CONDUITS

32mm DIA PVC CONDUITS

4.32.JUNCTION BOXES

Supplying, fabricating, erecting 14SWG thick Junction boxes with cover and other associated

accessories. The Junction boxes shall be of powder coated type and fixed flush with the floor

/ Wall /above false ceiling.

4.33.EMPTY M S CONDUIT

Supplying and laying the following M S Conduits concealed (or) open in wall/ceiling/false

ceiling etc. with necessary accessories clamps, screws etc. with 1 Run of 16SWG G.I. Fish

wire.

25 mm DIA M S CONDUIT

32 mm DIA M S CONDUIT

4.34. 0.Earthing Network

General Earthing System Distributed earthing will be carried all along the LT distribution

system, through local earth stations effectively bonding the cables / equipment. For Main

building, Substation and Electrical Panel Room Data Centre, one main earthing ring will be

provided along the building periphery connected to required number of earth electrodes. The

earthing ring will be taken 1525 mm away from building column / wall and will be laid directly

buried in ground. Main earthing ring will be further cross-connected and a mesh formed

depending on the layout and location of the equipment. The cross-connections will generally

run in cable trenches, or embedded in concrete floor based on the layout.

All non-current carrying metallic parts of various electrical equipment as well as cable

armouring metallic conduit/GI pipe system, cable racks/trays brackets, supporting structures

etc. will be effectively earthed. Earthing of medium and high voltage equipment will be done



by means of two separate earth conductors connected either directly to earth electrodes or to

an earthing ring irrespective of use of armoured cable or metallic conduit/GI pipe.

Building / technological steel structures, metallic utility pipes will not be used as earth

continuity conductor.

All earthing system will be so designed as to ensure effective operation of protective gears in

case of earth faults. The total earth resistance at any point of the earthing system for

substations and main plant buildings will not be more than one ohm. However, at other points

the value will not exceed 3 Ohms. Generally, main earthing rings and earthing leads will be

directly buried in ground. Additional earthing rings wherever provided inside plant

buildings/substations and earth continuity conductors will be taken either exposed on cable

racks/trays, structures, walls, ceiling etc. or embedded in concrete depending on installation.

Earth conductor directly buried shall be taken at a depth of 600mm. It shall be provided with

one coat of bituminised paint, at all welded joints to prevent corrosion. Earthing ring

wherever embedded in concrete will be laid parallel to the column rows of buildings. Earth

continuity conductor embedded in concrete will generally follow the shortest route and

wherever possible will be taken along pipes embedded for laying of cables. Earth conductors

lay on cable racks, trays etc. will be placed in accessible location keeping adequate clearance

to facilitate easy connections All 3 phase equipments will have duplex earthing, whereas

single phase equipments will have only one run.

1.Earth system:

The Earthing for light and power points will be carried out using insulated copper earth wire

running throughout the length of circuits and will be terminated at boxes, fixtures etc. with

effective bonding to main earth. Separate and distinct earth stations and electrodes will be

provided for UPS System, and Server Racks. Earthing for UPS Neutral, Server Racks points

will be carried out with insulated copper earth wires. The total earth resistance at any point

shall not be more than 1 Ohm.

Note:

1. Special care shall be taken during design of earthing system, since 400KV SS in the same

complex near the power room is proposed to be established by the utility.

2. Suitable isolation transformer shall be provided wherever required in the LT distribution

system in the Data Centre / Disaster Recovery Centre.

2.Technical Specification for Earthing system of pipe earth.

2.5 Mtr. long 40 mm. dia G.I. Pipe with holes drilled diametrically opposite to each other once

every 150mm. in an earth pit of 380 x 380 x 3000 mm. filled with salt and charcoal mixed

with sand in alternate layers 150 mm. each upto a height of 2500 mm. from bottom. The pipe

shall have provision for watering through a funnel. It shall also have for connecting providing



the 50 x 6 mm. GI Flat on two sides. A masonry structure shall be constructed to a depth of

750 mm. and a heavy-duty C.I Cover shall be used to cover the pit.

3.Technical Specification for Earthing system of plate earth.

Copper plate of size 600mm.x 600 mm.x 3.15mm. at a depth of 2000 mm. in an earth pit of

700 x 700 x 2500 mm. filled with salt and charcoal mixed with sand in alternate layers 150

mm. each upto a height of 2000mm. from bottom. The pipe shall have provision for watering

through a funnel. It shall also have for connecting 25 x 6 mm. Copper Flat on two sides. A

masonry structure shall be constructed to a depth of 750mm. and a heavy duty C.I Covers

shall be used to cover the pit.

4.Earthing conductors

2R x 1c 120Sq.mm. PVC Insulated copper conductor wires enclosed in PVC Conduits with

necessary clamps, screws, interlinks etc. for 160KVA UPS. 2R x 1c 25 Sq.mm. PVC Insulated

copper conductor wires enclosed in PVC Conduits with necessary clamps, screws, interlinks

etc. for 50KVA UPS and other power equipment. 1R x 1c 50 Sq.mm. PVC Insulated copper

conductor wires enclosed in PVC Conduits with necessary clamps, screws, interlinks etc. for

server rack earthing from the erath electrode. 1c 10 Sq.mm. PVC Insulated copper conductor

wires enclosed in PVC Conduits with necessary clamps, screws, interlinks etc. for server rack

earthing. 40 x 6 mm. copper Flat laid in open fashion with necessary clamps, screws,

interlinks etc., for neutral of DG. 50 x 6 mm. GI Flat laid in open fashion with necessary

clamps, screws, interlinks etc., for cable tray ,MV Panel. MLP, MPP Body earthing. 10SWG

bare enamelled copper wire for DB earthing. 8 SWG bare enamelled copper wire for VPDB

earthing.

5.Precautions:

All jointing of earth flats shall be done in such a way that all surfaces shall be thoroughly

cleaned and rubbed with emery paper before jointing. Ensure that there is no air gap

between the flats after jointing.

6. EARTH PITS:

Supplying, installing and connecting a Copper plate of size 600mm.x 600mm. x 3.15mm. at a

depth of2000 mm. in an earth pit of 700 x 700 x 2500 mm. filled with salt and charcoal mixed

with sand in alternate layers 150 mm. each upto a height of2000mm. from bottom. The pipe

shall have provision for watering through a funnel. It shall also have provision for connecting

25 x 6 mm. Copper Flat on two sides. A masonry structure shall be constructed to a depth of

750mm. and a heavy duty Cast Iron Cover shall be used to cover the pit. The cost of digging

and back filling shall also be included Sand, salt and charcoal are in the scope of Qualifying

Bidder.



Supplying, installing and connecting a 2.5 Mtr. long 40 mm. dia G.I. Pipe with holes drilled

diametrically opposite to each other once every 150mm. in an earth pit of 380mm x 380mm x

3000mm. filled with salt and charcoal mixed with sand in alternate layers 150 mm.each upto

a height of 2500mm. from bottom. The pipe shall have provision for watering through a

funnel. It shall also have provision for connecting 40 x 6 mm. Copper Flaton two sides. A

masonry strucutre shall be constructed to a depth of 750 mm. and a heavy duty Cast Iron

Cover shall be used to cover the pit. The cost of digging and back filling shall also be

included. Sand, salt and charcoal are in the scope of the Qualifying bidder.

EARTH CABLES / CONDUCTORS / FLATS / WIRE

Supplying, laying and connecting 2Runs x 1 X 120Sq.mm. PVC Insulated copper conductor

with earth link with SMC/DMC wires in open or concealed fashion enclosed in PVC Conduits

with necessary clamps, screws, interlinks etc. for UPS from the UPS Earth electrode to Busbar

near UPS.

Supplying, laying and connecting 1Run x 1 x 120Sq.mm. PVC Insulated copper conductor with

earth link with SMC/DMC wires in open or concealed fashion enclosed in PVC Conduits with

necessary clamps, screws, interlinks etc. for UPS from the Busbar to the UPS.

Supplying, laying and connecting 2Runs x 1 x 25 Sq.mm. PVC Insulated copper conductor

with earth link with SMC/DMC wires in open or concealed fashion enclosed in PVC Conduits

with necessary clamps, screws, interlinks etc. for UPS from the UPS Earth electrode to Busbar

near UPS

Supplying, laying and connecting 1Run x 1 X 25 Sq.mm. PVC Insulated copper conductor with


necessary clamps, screws, interlinks etc. for UPS from the Busbar to the UPS.

Supplying, laying and connecting 1Run x 1 x 50 Sq.mm. PVC Insulated copper conductor with


necessary clamps, screws, interlinks etc. for server rack from Earth electrode to busbar at

server room.

Supplying, laying and connecting 1Run x 1 x 10 Sq.mm. PVC Insulated copper conductor with


necessary clamps, screws, interlinks etc. for server rack from Busbar to server rack.

Supplying, laying and connecting 40 x 6 mm. copper Flat laid in open fashion with necessary

clamps, screws, interlinks etc., for neutral of DG.



Supplying, laying and connecting 50 x 6 mm. GI Flat laid in open fashion with necessary

clamps, screws, interlinks etc., for cable tray ,Main Panel, MLP,MPP Body earthing.

Supplying, laying, connecting and commissioning 10 SWG bare Enameled copper wire with

necessary clamps, screws etc.

Supplying, laying, connecting and commissioning 8 SWG bare Enameled copper wire with

necessary clamps, screws etc.

4.35.SAFETY EQUIPMENTS

All safety equipments shall be positioned optimally as well as the procedures followed by the

local authorities. All safety equipments shall be as per IS standards as specified in the Bill Of

Quantity.

Supplying, erecting and connecting a 5 KG CO2 FIRE EXTINGUISHER properly fixed on the

wall with necessary clamps, screws, bolts and nuts etc. The extinguisher shall be suitable for

all types of fires (A, B & C).

Supplying, erecting and connecting a 2 KG CO2 FIRE EXTINGUISHER properly fixed on the

wall with necessary clamps, screws, bolts and nuts etc. The extinguisher shall be suitable for

all types of fires (A, B & C).

Supplying, erecting and connecting Treatment Chart in English and Tamil directly fixed onto

the wall with necessary screws etc.

Supplying, and laying 10mm. Thick ISI Marked Rubber mats in Front of the Panel Boards.

Supplying and fixing 440 V Danger Board.

4.36.LADDER TYPE GI CABLE TRAY

Supplying, fabricating, erecting & connecting the following 2.0mm Thickness G I type Cable

Trays with necessary supports, tees, elbows, bends, bolts and nuts and any other associated

accessories to complete the job.

900mm (wide) x 100mm (collar height)


4.37.PERFORATED TYPE G I CABLE TRAY for Communication and Power

Supplying, fabricating, erecting & connecting the following 2.0mm Thickness G I Perforated

type Cable Trays with necessary supports, tees, elbows, bends, bolts and nuts and any other

associated accessories to complete the job.





4.38. FABRTICATED TYPE SUPPORTS

Supplying, fabricating, erecting and connecting M S angles, M S Flats, M S channels, M S flats

as required with necessary fabrication arrangements painted with two coats of red oxide

primer paint and two coats of Approved color. The cost shall also includes necessary

supports, foundation bolts, etc.,

Wherever needed, these supports shall be provided to suit the requirements. All supports

shall be painted as specified. All supports shall be properly fixed on to the ceiling with

necessary anchor fasteners.

4.39. Distribution boards and MCB classifications

All the MCB Distribution Boards shall be of the phase segregated type, fabricated out of 16

SWG thick sheet steel and shall be of the totally enclosed dust proof type suitable for wall

mounting. The Panel shall have welded back and sides and gasketted fully hinged front door.

Detachable gland plates shall be provided at the top and bottom with suitable gaskets for

cable entry. All DBs will be single / double door only as specified in the BOQ. 150mm height

adaptor box shall be fixed above the DB for terminating and segregating the wires. Incoming

MCB of required rating is in an independent. The incoming terminals shall be fully shrouded.

Three phase segregated compartments, each housing MCB's connected to one phase of the

power supply system. Each of the sections shall have a DP Earth Leakage Circuit Breaker

(ELCB) on the incoming and SP MCB's for Lighting/power on outgoing. In each section, a

separate neutral bus and independent earth bus shall be provided. The MCB's shall be of

current limiting type. The busbars shall be of Copper having continuous current ratings equal

to that of the incoming switch. The busbars shall be designed to withstand a fault level of not

less than 31 MVA for one second. The MCB's shall have a lockable switching lever. The

minimum electrical endurance shall be 20,000 operations.

The housing of the MCB shall be mounted self-extinguishing thermoset plastic material. The

short circuit current shall be brought to zero within 4 to 5 milli seconds from the time they are

established. All MCBs shall have a minimum short circuit capacity of 10 KA RMS. Undrilled

gland plates shall be provided both at the top and bottom. The degree of protection shall

confirm to IP 50. Phase separation barriers shall be provided C curve MCBs shall be provided

for Lighting and D Curve MCBs shall be provided for Power and UPS DBs.



4.40.MCCB control and MCB Control

MCCBs should comply with IEC 947 Part 2. The MCCB shall be suitable for universal mounting

(i.e) the Load / Line must be interchangeable. The MCCB shall be suitable for operating

Voltage of 415 V minimum and an Insulation Voltage of 600 V. The withstanding capacity

mentioned against each MCCBs shall be Ics only. All MCCBs shall be of Thermal Magnetic type

with adjustable over load releases and fixed short circuits.

4.41.Circuit Breaker

Besides the normal operating current, the adequate circuit breakers for handling in-rush and

surge current to the equipment. Each of equipments should be provided with a separate

circuit and a circuit breaker. Circuit breaker and its related power point/socket should be

properly labeled to identify the branch circuit it is controlling.

Lighting Circuits : C - Curve MCB

Power/Motor Circuit : D - Curve MCB

UPS Circuits : D - Curve MCB

4.42. WIRING CABLES AND CONDUCTORS

1.System of wiring

The system of wiring will consist of Fire Retardant and Low Smoke (FRLS) flexible copper

cables (or) PVC insulated PVC sheathed FRLS copper conductor wires in M S conduits.

Minimum size of copper conductor will be 1.5 sq.mm. for lighting and 4 sq.mm. for power.

Color code will be maintained for the entire wiring installation (i.e) Red, Yellow and Blue for

the three phases, Black for neutral and Green for earthing. Besides, ferruling will be provided

with number coding and easy identification for maintenance purposes. M S conduits shall be

used if they are concealed in the wall / slab.

The following cable sizes shall be used in the installation:-

a) Lighting circuits : 2.5Sq.mm.copper

b) Point Wiring : 1.5Sq.mm.Copper

c) Power Circuits (16 Amps) : 4.0Sq.mm.copper

d) Incomer to single phase LDB : 3 core 4.0 Sq.mm. copper

e) Incomer to Three phase LDB : 4 c 10 Sq.mm.Aluminium

f) Incomer to PDBs : 16.0 Sq.mm. Aluminium to 25.0 Sq.mm. Aluminium



depending on requirement.

g) UPS Circuit (server room) : 3 core 4 SQmm flexible copper wire in MS conduit

h) UPS Circuit (workstation room) : 3 runs 2.5 SQmm copper wire in MS conduit

2.Wiring on walls and above false ceiling.

All wiring shall be carried out only with M S conduits all light, fan sockets and any other

equipment must be earthed. Wiring shall be carried out with 650 V grade PVC insulated single

core multi stranded copper conductor wires as per IS : 694. The method of wiring shall be as

recommended in IS: 732 and its several parts. The physical and electrical continuity of the

conduit system shall be maintained throughout. No wire shall be left exposed at any location;

metallic flexible pipe shall be used to cover the same. Color coding of wire shall be carried out

as detailed below:

PHASES : RED/YELLOW/BLUE

NEUTRAL : BLACK (OR) GREY

EARTH : GREEN

The minimum diameter of the conduits shall be 25 mm. only. The following sizes of PVC

insulated multi stranded copper conductor wires shall generally be followed throughout:

From the final switch to individual outlets 1.5 sq.mm

From Distribution Boards to First Switch Board and 2.5 sq.mm

subsequent switchboards

All 15A socket (Only Phase & Neutral) 4.0 Sq.mm.

Earth wire throughout for Lighting. 1.5 Sq.mm.

Earth wire for raw power 2.5 Sq.mm



4.43. Light Fittings fixtures work

The adequate Light fittings shall be deployed in the Data Centre, Power room, Customer Care

Centre etc. The light fittings shall be preassembled with necessary ballasts, lamp holders,

lamps, interconnections, terminal connectors and other associated accessories. The light

fittings shall be carefully installed at site. Until hand over necessary protection sheets like

polyhthene covers shall be provided so that no insects can go in.

4.44. Electro Static Discharge (ESD) Control

The Data Centre shall be provided with appropriate methods & equipment to effectively

reduce ESD. It is required that the personnel handling sensitive equipment shall use wrist

straps, heel grounders, etc. to reduce the likelihood of human instigation of ESD. Cabinets,

Racks, cages shall be properly grounded & operated by trained officials during inspection,

maintenance and repairs. Usage of room ionisers is preferred to attract charged objects for

neutralization.

4.45. Emergency Power Supply

Emergency supply system with Service Load UPS system will be provided to maintain minimal

light levels thro‘ an Service Load UPS system. Emergency lighting fixtures will be located

strategically.

The Diesel Generators sets to support the UPS in providing emergency power supply to the

computer equipment in a prolonged power outage. The need of diesel generator depends on

the service requirements of the computer system. However, the generator should also be able

to support other essential facilities and equipment such as the airconditioning system,

security and access control system and lighting. The DG set shall come online automatically

within 10 seconds of AC mains failure.

The Qualifying bidder should make an arrangement with a Fuel Supply Company for

continuous supply of Diesel to DG sets in case the Fuel supply is erratic, not available or is

deficient on any reason whatsoever.



The Qualifying bidder should store diesel sufficient enough to last for a minimum of 7 days.

The qualifying bidder shall provide the details and formal arrangement copy with the Fuel

Company to ensure that Qualifying bidder is guaranteeing fuel availability. The qualifying

bidder shall also provide the diesel storage and replenishment policy to TNEB. TNEB shall

provide space for parking their Fuel Replenishment vans etc.

4.46. Energy Saving

Apart from implementing effective maintenance & service schedules and use of energy

efficient drives, especially motors, the following is proposed for implementation.

• Use of LED indicators in EXIT signs with battery backup instead of incandescent lamps

• Use of energy efficient transformer

• Use of CFL lamps / LED panel(Lamps) which are more efficient.

• The LT side voltage will be maintained constant as an energy saving concept.

4.47. MISCELLANEOUS

Preparation of electrical schematic layout & physical layout drawings approval for the all

electrical installation, equipment, like PAC, DG, etc. and obtaining safety certificate

from the CEIG. The submission of drawings follow up actions & statutory fee and coordination

with CEIG. And also responsibility of the Qualifying Bidder Providing temporary

connections with necessary socket outlets, light fittings With wiring in various locations for

execution of the work. (Lump Sum)

4.48. CEIG Approval:

The Qualifying Bidder shall be responsible for preparation of electrical schematic layout &

physical layout drawings approval for the all electrical installation, equipment, like,

PAC, DG, etc, and obtaining safety certificate from the CEIG. The submission of drawings

follow up actions & statutory fee and coordination with CEIG are the also responsibility of the

Qualifying Bidder.

tangedco dcdr spec vol ii tech

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