20kva ups manual

Installation and Maintenance Manual S400D-230/110V UPS

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Dear Customer, Please accept our thanks for giving us the privilege to serve you by choosing a Liebert make ‘UPS’. If this is your first Liebert UPS, we hope it is the beginning of a long relationship Which delivers value to your organisation. If you already own and use a Liebert Product, we are doubly honored by your decision of continuing this relationship. It is our constant endeavor to partner you for the growth and success of your Business. This philosophy is reflected in our Mission statement “To deliver value through Air & Power Quality solutions to achieve customer delight”. Please do give us feedback to help us realize our Mission.

Emerson Network Power (India) Private Limited


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IMPORTANT

This manual contains information concerning the installation, operation and Maintenance of the S400D Uninterruptible Power System (UPS) for the single Module and one plus one Systems. All relevant parts of the manual should be read prior to commencing installation. The UPS must be commissioned by an engineer approved by the manufacturer (or his agent) before being put into service. Failure to observe this condition will invalidate any implied warranty. The S400D UPS has been designed for Commercial / Industrial use only. The S400D has not been designed for direct use in any life support application. If you encounter any problem with the procedures contained in this manual you should seek immediate assistance from Emerson Network Power (India) Pvt. Ltd. Sales Office from whom the equipment was purchased. Alternatively contact the Emerson Network Power (India) Pvt. Ltd Customer Service & Support department at the address shown below: EMERSON NETWORK POWER (INDIA) PRIVATE LIMITED Plot No. C-20, Road No. 19 Wagle Industrial Estate Thane – 400 604, INDIA Phone: (00 91 22) 33154400 Fax: (00 91 22) 25828358 25800829 Emerson Network Power (India) Private Limited pursues a policy of continual product development and reserves the right to change the equipment without notice.

@ Copyright 1999 by Emerson Network Power

Unauthorized reproduction prohibited

All rights reserved


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***SOUTH ZONE***

Banglore No. 412, Jindal Center, Opp Sukhsagar Hotel, 3rd Flr, 100 Fleet Road,

Koramangalam, Bangalore - 560 095.

Tel: 91-080-33154000

Fax: 91-080-41135570

Chennai Oms Court, No.1, Nathamuni Street, T.Nagar, Chennai - 600 017.

Tel: 91-044-33154000 to 4039

Fax: 91-44-33154035

Cochin No. 40 / 9338, (New No. 59 / 4517), 4th Floor, Chakos Towers, Padma

Pullepady Road, Cochin - 682035

Tel: 91-484-3325400/405

Fax: 91-484-2341 986

Hyderabad 405/406 First Floor,No. 62, Navketan Complex, S D Road , Hyderabad -500003

Tel: 91-40-33154000

Fax: 91-40-2780 6777

Coimbatore 343/ B-17, SVP Complex, 2nd floor, Avaram Palayam Road, Sidha Pudur,

Coimbatore- 641044

Tel: 0422 33254000

Fax: 0422-4389625/3325403

Mangalore Raj Business Centre , 3rd Floor, Balmatta Road, Mangalore - 575001 Tel: 9901055188

Fax:

Vishakhapatanam No.7,Vishakha Executiva Centre, 47-11-1/5,1st Floor Eshwar Arcade, Dwarkanagar,1st Lane,Vishakhapatnam - 530 016.

Tel: 9908400029

Fax:

Trivandrum 2nd Floor , Megabyte , Business Centre , Capital Tower, Statue Junction , Trivandram-695001

Tel: 0471-6450388

Fax:

TELEPHONE: (00 91 22) 33154400

FAX: (00 91 22) 25800829 / 25828358


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***NORTH ZONE***

Gurgaon Plot no-2 udog, Vihar phase-iv, Gurgaon, Haryana, India-122016 Tel: 91-0124-3315500

Fax: 91-0124-3315480

Lucknow NO.-05, 3rd floor, Raja Ramkumar Plaza, On Top Of City Mart, 75,

Hazratganj, Lucknow - 226001.

Tel: 0522-33154000, 9838074281

Fax: 0522-2239877

Chandigarh SCO 58, 2 ND Floor, Sector 47 – C, Chandigarh - 160047

Tel: 0172-3931893

Fax: 0172-5016531

Guwahati Institution of Enginners Building (3rd floor), Near Lakhtakia Overbridge, Panbazar, Guwahati - 781 007.

Tel: 91-361-2734485

Fax: 91-361-2734486

Allahabad Emerson Network Power , 18/4, Tagore town, Bhansi Bhavan, In

front of old LIC building, Allahabad

Tel: 9838074007

Fax:

Varanasi Ananat Complex, D-64/132 KA, SIGRA,Varanasi- 221010 Tel: 9838074007

Fax:


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***WEST ZONE***

Mumbai 414-424, 'b' wing, "Bhaveshwar arcade", opp. Shreyas cinema, LBS Marg,

Ghatkopar (west), Mumbai-400086.

Tel: 91-22-67208800

Fax: 91-22-67208805

Pune Office No. 7, II nd Floor, Pratibha Towers, Opp. Jog Center, Pune - Mumbai

Road, Wakdewadi, Shivaji Nagar, Pune - 411 016

Tel: 020-33154024

Fax: 020-66235001

Baroda 39/2, Arunodaya Society, Alkapuri, Baroda - 390 005.

Tel: 91-265- 3929500

Fax: 91-265-2343937

Ahmedabad 205, Sukhsagar complex, beside Fortune Landmark Hotel, Usmanpura, Ashram

Road, Ahmedabad. Gujarat – 380 013

Tel: 079 – 27560230/40

Fax 079-7-27560230

Nagpur 69, Hindustan Colony, Vivekanand Nagar Post, Wardha Road, Nagpur-440015 Tel: 0712-25634997

Fax: 0712-25634997

Vikroli Dheeraj Kawal, 1st floor, Near Vikroli Station, LBS Road, Vikroli(w)

Tel 022-40780308, 40780303

Fax 022-40110183

Bhopal Emerson Network Power , Plot No. 18, Second floor , Liberty chamber , Near

Batra Hospital, Zone 1 , Maharana Pratap Nagar, Bhopal, MP - 462011

Tel 9993590589

Indore 109, Ratnamani Complex, 7/1 New Palasra, Indore - 452 001

Tel: 0731-4023806

Fax:

***EAST ZONE***

Kolkata Advantage Tower, 7th Floor, Plot EN27, Sector-V, Salt Lake, Kolkata-700091

Tel: 91-33-33154000

Fax: 91-33-33154001

Jamshedpur Ground Floor, Contractor’s Area, Kashi Kanj, Road no.2, Bistupur,

Jamshedpur-831001

Tel: 0657-6546636

Fax:

Bhubaneswar Plot No. 267, AN Plaza, Rasulgarh, Bhubaneshwar, BHUBANESHWAR - 751 010

Tel: 0674-2586003

Fax: 0674-2580058


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Instructions for safe use: Note that the S400D series of UPS is a highly sophisticated piece of instrument designed to meet the critical power requirements of you valuable load. Hence it becomes imperative that this UPS be installed by a service personnel trained by EMERSON NETWORK POWER (INDIA) PVT LTD in the installation and operation of this instrument. Failure to observe this condition will invalidate any implied warranty. This manual provides complete information required for safely operating [by a qualified personnel] the S400D UPS that you have purchased. Any attempts to operate the UPS should be carried out only after the operator has completely read this manual.

I. If you encounter any problem with the procedure contained in the manual you should seek immediate assistance from the dealer / distributor from whom you have purchased this unit or contact the nearest ENP (I) service office. In case of a emergency you can get in touch with the “ Technical Support Department " at

EMERSON NETWORK POWER (INDIA) PVT LTD Plot no. C/20, Road No. 19, Wagle Industrial Estate, Thane (West) - 400 604, Phone No: (022) 67208000,67208200,67208800. FAX No.: (022) 25824286, 25828358.

II. The Customer Sales and Service wing can also arrange for service contract and full commissioning service.

III. The S400D UPS and its accessories must be installed by an

ENP (I) qualified technician only.

IV. The S400D UPS must be properly earthed at all time. The S400D UPS has been designed for indoor UPS. It should be protected from rain or excessive moisture and installed in a clean environment, free from inflammable liquids, asses or corrosive substances. Do not stand beverage containers, plants or any other product containing liquid, on the top of the unit.

V. Do not place any type of magnetic storage media on the top of the unit

as this may cause data corruption.

VI. The S400D UPS has been designed to protect your load and itself under such a condition it will be not advisable to provide supply to the load by bypassing the UPS via the maintenance bypass. Please consult the manual for finding out the cause of supply disruption before resorting to any further course of action.


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VII. Do not operate the UPS before the ENP (I) Approved service

personnel has commissioned the unit. He will validate the installation work and install the required site information in to the micro-controller memory. This information is required to substantiate any warranty claims that might be made.

VIII. When working on the unit it must be remembered that the unit will be

having live voltage at all time unless it is isolated from the mains supply and the batteries. It is hence necessary that the safety and precautionary notes contained in various sections of this manual be read and thoroughly understood before touching any of the internal components of the UPS. Pay special attention to the safety warnings concerning the handling and fitting of the UPS batteries.

IX. Weight and mobility hazards: The S400D units should be handled

using proper lifting aids during transportation and installation. Pay attention to the handling tips provided in the installation instructions.

X. Contact qualified service personnel’s if any of the following conditions

are observed A. Power cables have been damaged B. Fluids have been spilt on the unit or battery.


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CHAPTER 1

GETTING THE UPS CONNECTED 12 1.1 Safety Warnings 12 1.2 Equipment’s Accessories 12 1.2.1 UPS 12 1.3 Installation Considerations 12 1.3.1 Environmental Considerations 13

1.3.2 Access Considerations 13 1.3.3 Weight Considerations 13 1.3.4 Electrical Considerations 13 1.3.5 Battery Considerations 14 1.4 Installation Procedure 14 1.4.1 Unpacking and visual examination of UPS 14 1.4.2 Final Positioning of UPS 15 1.4.3 Installing Batteries in Battery Cabinet 17 1.5 Power connection points on the UPS 20 1.5.1 External Power cable connections for Single Module 21 1.5.2 External Power Cable connections for Parallel Module (1+1) 23 CHAPTER 2

OPERATING INSTRUCTIONS 28 2.1 Introduction 28 2.2 Operator control switches 28 2.2.1a Main control rotary switch (S1) 29 2.2.1b Output & Maintenance Bypass MCBs ‘S7’ and ‘S8’ 30 2.2.2 Run / Standby switch (S2) 31 2.2.3 Black Start Disable Switch (S4) 31 2.3 Operating procedure 32 2.3.1 Important notes 32 2.3.2 Initial condition 32 2.4 UPS Startup Process (For single Module) 32 2.5 Load Power Down / Up Procedure 34 2.5.1 LOAD POWER DOWN PROCEDURE (for the single module) 34 2.5.2 LOAD POWER UP PROCEDURE (for Single Module) 35 2.6 UPS Shut Down Procedure (for Single Module) 35 2.7 UPS Startup Procedure [for (1+1) parallel module] 36 2.8 Load Power Down/Up Procedure for PARALLEL module 37 2.8.1 Load power down procedure 37 2.8.2 Load power up procedure 38 2.9 UPS Shutdown Procedure for (1+1) Parallel Systems 38


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2.10 Alarms and Indications 39 2.10.1 Normal operation 39 2.10.2 Mains failure 40 2.10.3 Other fault or alarm conditions 40 2.11 Operator Trouble shooting Guide 41 CHAPTER 3

MAINTENANCE 42 3.1 Daily or Routine Checks 42 3.2 Monthly Checks 42 3.3 Scheduled Maintenance Checks 43


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1.1 Safety Warnings

• The equipment must be installed by a Company’s approved qualified person.

• Do not switch on the electrical power to the UPS equipment before the arrival

of the commissioning engineer.

• Special care should be taken when working with the battery associated with

this equipment. When connected together the terminal voltage exceeds 300Vdc

and this is potentially lethal.

• Eye protection & hand glows should be worn while working with batteries to

prevent any injuries from accidental electrical arcs or chemicals.

• If a battery leaks electrolyte, or is otherwise physically damaged, it should be

contained in a container resistant to sulphuric acid.

1.2 Equipment’s Accessories

This section describes the parts, which are supplied along with the UPS. These parts

have to be examined on receipt of the system.

1.2.1 UPS

The UPS is mounted on a wooden base palette and fixed on to the same. The unit is

wrapped in polythene sheets and enclosed in corrugated box. Enclosed along with

each unit are • Battery and Bypass fuses (if not fitted on fuse base)

• Communication kit (optional)

• Paralleling flat cable (optional)

1.3 Installation Considerations

In this section we will have a look at a certain point which need to be considered

while choosing a location for UPS and the process of Installation.


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1.3.1 Environmental Considerations

The internal ruggedness and external aesthetics of the S400D unit allows the UPS to

be installed in an office environment or in a general plant room. Wherever the UPS is

installed ensure the following points:

• The location must be cool, dry and clean with adequate ventilation to keep the

ambient temperature below 450C. If the UPS is supplied with Sealed Maintenance

Free Batteries, place the batteries in Air Conditioning atmosphere. Not keeping

the batteries in controlled temperature of 25-270C will drastically reduce its life.

• The installation location must be kept clear of contaminants such as excessive

moisture, inflammable or combustive vapours, chemical fumes and corrosive

gasses or liquids.

• If needed install extractor fans in the room to aid air circulation. Use suitable air

filtration system for locations where the UPS is to operate in dusty environments.

1.3.2 Access Considerations

The UPS is forced cooled with the aid of internal cooling fans. Cooling air enters the

UPS from the front and is exhausted through the ventilation grills located at the back

of the UPS. Hence you must allow a minimum gap of 150mm behind the equipment

to allow for adequate airflow.

The unit requires access from all four sides and top for the purpose of

troubleshooting or maintenance. Hence ensure that all sides and top of UPS are

easily accessible.

Being mounted on castors, it is possible to install the UPS as a Mobile unit, provided

that its input and output power cables are held in suitably flexible conducts. This

type of installation allows the UPS to be flush fitted as a part of an equipment suit

and pulled forward for service access when required.

1.3.3 Weight Considerations

The weight of the UPS makes it difficult to move the equipment over certain floor

surface such as carpets. This should be taken into consideration during the

positioning of the equipment for installation, and when deciding whether or not to

install the UPS as a Mobile unit. 1.3.4 Electrical Considerations

Follow the table given below to select Power cables for S400D UPS external

connections. The table shows current ratings when UPS is loaded to its 100%

capacity. Note: - Since UPS has 150 % overload capacity, select the cables considering the 150% overload capacity

for 60 seconds.


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Table for current ratings for UPS loading to 100% -

S400D UPS 10 kVA 10 kVA 20 kVA 5 kVA Rating 110V 230V 230V 230V Nominal Input Current at 415VAC 15A 15A 30A 19A Maximum Battery Current (Discharge) 30A 30A 60A 18A Maximum Output Current (100%) 91A 44A 87A 22A Maximum Bypass Current (100%) 91A 44A 87A 22A

Note: 1. For Common Bypass UPS, Input cable rating should be same as Output cable rating.

2. S400D UPS with 110V output does not support the common Bypass.

3. S400D UPS can be used for 220V, 240V also as per customer requirement.

4 .S400D 5kVA UPS nominal input current at 24A battery charging current.

1.3.5 Battery Considerations

The UPS has been designed for the use with various variety of batteries. If the

batteries are being installed at a distance from the UPS ensure that the cable used is

such that the total voltage drop in the cable does not exceed 3 Volts. In case the

batteries are being installed in a separate room ensure that DC isolators of adequate

rating is mounted on each Battery rack. These isolators should be easily accessible.

These will be useful for isolating the Batteries from UPS for safe maintenance.

1.3.5.1 Float/ Boost Charging Specifications of S400D

1.3.5.1.1. Definitions

1. FBC – Float/ Boost Charger.

2. SMF – Sealed Maintenance Free Batteries.

3. Ni-Cd – Nickel Cadmium Batteries.

4. Lead-Acid – Lead Acid (Wet Cell) Batteries.

5. VRLA – Valve regulated Lead Acid

6. EOD: End of Discharge Voltage

7. VPC: Volts per cell

1.3.5.1.2. Float/ Boost Voltage Levels

Following table shows the float voltage and boost voltage levels for different types of

battery cells/ Block.

*For Boost charging in SMF/VRLA, VPC value depends on Manufacturers

Specifications/ recommendation; also applicable only if cyclic operation of the

battery is selected.

NA : Not Applicable.

Battery

Type

V / Cell Rectifier Voltage No.of

Cells /block

No. Of

Blocks

total cells V / Block

Float Normal Boost Float Normal Boost

SMF/VRLA 2.25 NA 2.35 * 351 NA 367 6 26 156 12

Lead Acid

Wet cell 2.18 2.4 2.7 314 346 389

6 cells per

block / 1 cell

24 blocks /

144 cells 144

12v per block /

2v per cell

Ni-Cd 1.42 NA 1.55 351 NA 383 1 247 247 1.2


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Rectifier Voltage in S400D will be automatically generated depending on the type of

Battery selected from the MIMIC LCD display.

SMF Battery can be selected to charge (a) In NON-Cyclic mode as “CVCC”, and

(b) In Cyclic mode as “FBC”

1.3.5.1.3. Battery charge current limit

The Battery Charge current limit is settable from MIMIC LCD display.

In S410D UPS, Battery current limit is adjustable from 1A to 4A.

In S420D UPS, Battery current limit is adjustable from 1A to 7A.

In S400D 5kVA UPS, Battery current limit is adjustable from 1A to 24A.

1.3.5.1.4. End of Discharge

EOD for SMF/ VRLA : 1.67V / cell

EOD for Lead Acid Wet cell: 1.80V/ cell

EOD for Ni-Cd: 1.05V/ cell.

1.3.5.1.5. Over voltage protection for the battery

The batteries will get isolated by the DC Contactor if the DC Voltage is above

(V boost+10V)

1.4 Installation Procedure

In this section we will study the procedure for installation of the UPS.

1.4.1 Unpacking and visual examination of UPS

Remove the packing and all the packing derbies, base pallet, as per the Instruction

sheet attached on the UPS cabinet. Carry out a through external visual check of the

UPS to verify that it is complete and free of shipping damage. Report any such

damage to the shipper immediately.

Note: - Before installing the UPS ensure that you have received all the accessories as mentioned in the

purchase order or packing list.

1.4.2 Final Positioning of UPS

1. Move the UPS to the final position but leave adequate room for working.

2. Remove the Top and Front cover as shown in figure 1.1. Locate the Bypass fuses

(if available) and Battery fuses packed separately and retain for fitment at a later

stage.

3. Remove both side covers and open the top PCB tray. Carefully examine the

interiors of the whole UPS for signs of shipping damages, general component

loose connection etc. Report any damage immediately.

4. Fix the stabilizing bracket again in a new orientation with adjustable jacking

feets facing the ground as shown in figure 1.2.


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Fig.1.1 Opening of top, front and side covers

5. Ensure that the brackets are properly seated in their locating channels and

secured correctly as they support large proportion of the equipment weight once

the feet’s are screwed down.


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1.4.3 Installing Batteries in Battery Rack

Arrange the Batteries inside the Battery rack as shown in figure 1.3. Secure the

batteries to their final position. Pay attention to the polarity of each individual block

of battery.

Interconnect the batteries using the battery links supplied. Pay careful attention to

the polarity of connection. Please ensure that the positive terminal of any battery

should be connected to the negative terminal of the next battery.


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NOTE: Observe Battery Polarity carefully.

Fig. 1.3 Battery Arrangement & Cable connections


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Fig. 1.4 Battery cabinet & UPS

Using Power cable, connect the +ve terminal of extreme battery (battery no. 28) to

the +ve terminal of Battery isolator, and –ve terminal of extreme battery (battery

no. 1) to the –ve terminal of Battery isolator.

Keep F1 and F2 of UPS open and connect cable from battery isolator +ve to Battery

+ve terminal of the UPS. Connect cable from battery isolator -Ve to the Battery –ve

terminal of the UPS.

Mount Temperature Sensor PCB on one of the battery, connect other end of the

temperature sensor PCBs wire to the Socket below S2 switch, on the back side of

UPS.


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1.5 Power connection points on the UPS

Figure 1.5 illustrates the front side of power connection points on the S400D unit.

Fig. 1.5 Front side Power connectors for the External connection

Note: There are additional terminal blocks provided in the UPS. The reason for having two identical sets

of power terminals is to provide flexibility in power cable inter-connection in the case of a 1+1 system.

This will be evident when we discuss power cabling for a 1+1 system.

For the individual UPS system following are the Input / Output / battery

cables • UPS Input: 3 phase, 4 wire with pin type lug for UPS terminals connection.

• Bypass input: Single Phase - 2 wire with pin type lug for UPS terminal

connection.

• UPS Output: Single Phase - 2 wire with pin type lug for UPS terminal

connection.

• Battery: DC - 2 wire with pin type lug for UPS terminal connection.

• Earth: 6mm2 green wire

Note: All UPS are dispatched as common bypass by shorting R phase (U1) to bypass live (U3) and input

neutral (N1) to bypass Neutral (N3) through links.


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1.5.1 External Power cable connections for Single Module

Fig 1.6 Input, Bypass, Load and Battery Power connections for Common and Split Bypass

CAUTION

S410D UPS with 110Vac does not support common bypass. Before giving input supply to the UPS ensure the split bypass connections.

1. Three phase input supply connection.

Connect 3-phase supply of the Mains to 3 PHASE input terminals – U1, V1, W1 and

N1 of MCB in UPS. Connect the other end of cable coming from U1 terminal to R

phase, V1 terminal to Y phase, W1 terminal to B phase and N1 terminal to Neutral of

input circuit breaker.

2. Load connection

Connect Output load cable to U2 & N2 terminals on the front side of the UPS.

Connect the other end of U2 cable (live) and N2 cable (neutral) to the Load breaker.

3. Common bypass connection from main supply

By default the UPS is configured in common bypass mode by shorting input U1-U3 &

Neutral N1-N3.

OR


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3. Split bypass from external supply

Remove Shorting links (*) as shown in figure 1.6. These shorting links are connected

at Input (U3 – U1) and Neutral (N1 – N3). Connect input phase of Bypass to U3 and

input neutral to N3 terminal of UPS.

4. Battery connection

Note: Ensure that the Battery fuse switch (F1 & F2) of the UPS are kept open.

Connect the Battery cables to +ve and –ve terminals on the front side of UPS. The

other end of +ve terminal (UPS) is connected to positive terminal of Battery Isolator,

and –ve terminal (UPS) is connected to negative terminal of Battery Isolator, which

is located near or on the Battery rack.

5. Battery Temperature Sensor

On the backside of the UPS below S2 switch there is a battery sensor plug. Remove

the plug and connect Battery sensor PCB wires plug into the socket. Mount Battery

temperature PCB on one of the Battery inside the Battery rack.

6. Remote Stop

If Remote Stop is used there is a REMOTE STOP Socket on the backside to the UPS.

Remove the plug from the socket and connect Remote stop wire plug into the socket.

Connect other end of the wire to Remote stop Switch.

7. Earth Connections

Connect dedicated Earth connections to the UPS on the Earth terminals provided on

the front side of UPS.

Note: Voltage between Earth and Neutral should be 5V


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1.5.2 External Power Cable connections for Parallel Module (1 +1]

Fig. 1.7 Parallel module cable connections with Split Bypass.

1. Three phase input supply connection of UPS 1

Connect 3-phase supply of the Mains to 3 PHASE input terminals – U1, V1, W1 and

N1 of MCB for UPSI. Connect the other end of cable coming from U1 terminal to R

phase, V1 terminal to Y phase, W1 terminal to B phase and N1 terminal to Neutral of

input circuit breaker.

2. Three phase input supply connection of UPS 2

Connections for the Input supply to UPS 2 should be done in similar way, as for

UPSI.

Note: There could be two different or one single 3 phase input supply breakers for both the UPS’s.

3. Load connection of UPS 1

Connect Output load cable to U2 & N2 terminals on the front side of the UPSI.

Connect the other end of U2 cable (live) and N2 cable (neutral) to the Load breaker.


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4. Load connection of UPS 2

Connect Output load cable to U2 & N2 terminals on the front side of the UPS2.

Connect the other end of U2 cable (live) to U2 terminal of UPSI, and N2 cable

(neutral) to the N2 terminal of UPSI.

5a. Split bypass supply connection of UPS 1

Note: - for S400D 110V UPS, bypass should be supplied by 110V separate AC source.

Remove shorting links between R phase (U1) & Bypass live (U3) and input Neutral

(N1) and bypass neutral (N3). Connect Bypass cables to U3 & N3 terminals on the

front side of the UPSI. Connect the other end of cable coming from U3 terminal to

the live phase and N3 to the neutral of the Bypass supply breaker.

6a. Split Bypass connection of UPS 2

Connect Bypass cables to U3 & N3 terminals on the front side of the UPS2. Connect

the other end of cable coming from U3 terminal to U3 terminal of UPSI, and the

cable coming from N3 terminal to the N3 terminal of UPSI.

OR

5b. Common Bypass supply connection of UPS 1

Note: - common bypass in not supported by S400D 110V UPS

Common bypass is factory set by shorting R phase (U1) to bypass live (U3) and

input neutral (N1) to bypass neutral (N3). External cable connection is not

necessary.

6b. Common Bypass connection of UPS 2

Common bypass is factory set by shorting R phase (U1) to bypass live (U3) and

input neutral (N1) to bypass neutral (N3). External cable connection is not

necessary.


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Fig. 1.8 Parallel module cable connections with Common Bypass

(Note: S410D with 110Vac doesn’t common Bypass.)

6. Separate Battery Connection of UPSI – Battery 1 & UPS2 – Battery 2

Note: Ensure that the Battery fuse switch of the UPS is kept open.

Connect the Battery cables to +ve and –ve terminals on the front side of UPSI. The

other end of +ve terminal (UPSI) is connected to positive terminal of Battery

Isolator, and –ve terminal (UPSI) is Connected to negative terminal of Battery

Isolator, which is located near the Battery rack. Repeat same cabling for UPS 2

battery connections as UPS 1 battery connections.

7. Battery Temperature Sensor (UPSI & UPS2)

On the backside of the UPS below S2 switch there is battery sensor plug. Remove

the plug and connect Battery sensor PCB wires plug into the socket. Mount

Temperature sensor PCB on one of the battery inside the Battery cabinet

8. Remote Stop (UPSI and UPS2)

If Remote stop has to be used, there is a Remote Stop Socket on the backside of the

UPS 1. Remove the plug from socket and connect Remote stop wires plug into the

socket. Connect other end of the wire to Remote stop switch. Repeat the same

procedure for UPS 2.


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9. Earth Connections

Connect dedicated Earth connections to both the UPS - UPS 1 and UPS 2 on the

Earth terminals provided on the front side.

Note that the unit that you receive has been set to work as per the requirements

specified by you in the purchase document. In such a case use the information provided in the following paragraph as a means of cross checking the settings. DO NOT DISTURB ANY SETTING IF YOU HAVE ANY DOUBT ABOUT THE SAME AND /OR ARE NOT WELL AWARE OF THE IMPLICATIONS OF CHANGING ANY PARTICULAR SETTINGS.

IN CASE OF DOUBT ASK

The regional office representative or Technical Support at Head office.


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CHAPTER 2CHAPTER 2CHAPTER 2CHAPTER 2

OPERATING INSTRUCTIONS

2.1 Introduction

This chapter describes the procedure for operating the UPS.

Note that here the following conditions are assumed –

• It is assumed that the UPS has been properly installed by Company’s trained

service personnel and needs no further internal settings.

• Batteries are connected.

• The input, bypass and battery fuse are OK and their respective fuse holders are

open. (If not base mounted fuse)

In this chapter we will have a look of the following major issues

• Operator controls.

• Startup and shut down procedure.

• Interpretation of alarm conditions and actions to be taken.

In the latter part of this chapter we will have a look at the operation of the UPS

when connected in parallel.

2.2 Operator control switches

S400D uses both DSP based and powerful H8 micro controllers for controlling the

power, display & annunciation and communication. The firmware has been designed

so at to make the system operation fully automatic and reduce the operator

involvement at start up and shutdown to the bare minimum. In fact in the event of

any negligence on the part of the operator the UPS system controller takes care of

the system with appropriate alarm. However, ensure that the UPS system is

operated by a qualified technician who has read this manual and fully understood the

operation of the system.

As described in the last chapter here are five switches which are used to control the

operation of the UPS viz.,

Output MCB S7, Maintenance Bypass MCB S8 Run / Standby switch (S2)

Black start disable switch (S4)


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2.2.1 Output & Maint Bypass MCBs ‘S7’ and ‘S8’

UPS Position (Output MCB ‘S7’ ON)

Ensure that the MCB ‘S8’ is OFF and then turning ON MCB ‘S7’ the load is connected

to the output of the UPS i.e. from the inverter, thus depending on the status of the

static switch the load will either be on Static Bypass source or on the Inverter. This is

the position in which the switch should be for Normal operation.

Maintenance bypass (Maintenance Bypass MCB ‘S8’ ON) Note: - for S400D 110V UPS, bypass should be supplied by 110V separate AC source.

While on maintenance bypass the load will be connected directly to the bypass

supply source and will be isolated from the output of the static switch assembly. To

switch ON MCB ‘S8’ first keep the UPS in Bypass mode and then Switch ON this MCB

‘S8’.

This MCB ‘S8’ is used for powering the critical load from the bypass source while the

UPS can be shutdown by the service personnel for the sake of maintenance or

trouble shooting the UPS system. Do note that this MCB ‘S8’ should be ON only in

emergency situations where the UPS has to be shut down for maintenance or

troubleshooting of the UPS and is not for normal supply of power to the load.


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2.2.2 Run / Standby switch (S2)

This switch allows you to turn OFF the UPS if required as a part of the day to day

operation - at the end of the working day for example.

When the switch is in the STANDBY or OFF position the microcontroller switches OFF

inverter, bypass and inverter static switch. Thus the load power is removed from the

UPS output terminal but the rectifier remains ON so as to charge the batteries. In

this position it will be noted that the upper and lower load LED’s on the front mimic

panel will be OFF. When the switch is turned on to RUN or ON position the inverter

turns ON and the output of the inverter is switched over to the load terminal.

2.2.3 Black start disable switch (S4)

This switch is to Enable or disable the black start facility. In case of mains failure UPS

shutdown due to fully discharge of batteries. Here batteries still keep on discharging

through black start & bleeder resistors. This can be avoided by switching OFF this

switch i.e. black start Disabling. This switch can be accessed after removing the front

panel.

Note: As per factory setting, this switch will be kept OFF


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2.3 Operating procedure

Usually the UPS can be considered to be one of the four selected operating states. :

- Shutdown

- Maintenance Bypass

- Stand by

- Normal operation

The following Operating procedures enables you to start and stop the UPS (i.e.

change from the ‘shutdown’ or ‘maintenance bypass’ condition to ‘normal operation’

and vice versa) in safe logical manner.

The procedures take the form of charts containing a sequence of actions along with

the appropriate equipment response (i.e. LED indication and messages).

We will have a look at how to start or stop the UPS in a safe and logical manner.

2.3.1 Important notes

1. The operator controls and indicators have been fully described in the previous

section.

2. Audible alarms may sound at various points of the start up procedures. It can

be cancelled at any time by pressing the alarm reset switch on the front display

panel.

3. During the first 10 seconds of start-up LCD & Audible warning status are

random.

4. When turning ON the UPS, if LCD display panel does not respond as indicated in

the procedure then shut down the UPS immediately and follow trouble shooting

charts. 2.3.2 Initial condition

1. UPS has been installed in all respects and all the necessary internal settings

have been done.

2. The input, bypass and battery isolators are open.

3. MCB’s ‘S7’ & ‘S8’ are in OFF position.

4. Switch ‘S2’ is in OFF / STANDBY position 5. Batteries have been connected to the battery input terminal [Pay attention to the

polarity of the Battery connection, keeping the battery fuse open]

6. 3 phase input supply has been connected with proper phase sequence.

2.4 UPS Startup Process (For single Module)

Action Results

1. Remove the UPS front panel

2. MCB’s ‘S7’, ‘S8’ are in OFF mode.

3. Ensure that run stand by switch ‘S2’ on rear side of the unit is in ‘OFF’ position.

4. Ensure that UPS input supply, bypass and battery supply cable are connected but there is no power given to UPS.


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5. Select F1, F2 battery fuses, F3 bypass fuse according to the rating of the UPS.

6. Switch on 3 phase input mains supply, also switch on the 3-phase input MCB of UPS.

7. Switch ON ‘Run standby switch’ ’S2’ on

rear of the unit.

8. Connect multimeter across the

upper terminals of Battery fuse

switch on the front side of the UPS.

Remove Top panel of the UPS Unit.

Locate Micon board and Switch ON

rectifier switch ‘SW3’. Hear turn ON

sound of battery Contactor. At the

same time monitor the soft start DC

bus voltage, it should not increase

beyond 356±1% VDC.

9. Check the polarity of Battery

terminals, and the UPS Battery

terminals With Multimeter. Ensure

positive is connected to positive and

negative is connected to negative

terminal. Switch ON the Battery

isolator.

10. Close Battery Fuse F1, F2. By DC

clamp meter measure battery

charging current in battery cables, it

should not be more than 3.0A

(Factory set).

Note: Set Battery charging current as per AH

capacity of the Battery.

11. Connect multimeter across the

OUTPUT terminals of the UPS.

Ensure the polarity. Switch ON the

Inverter Switch ‘SW4’ on Micon

Board. Inverter will turn ON.

12. Check Output voltage, it should not

increase beyond 235VAC/115VAC. If

necessary set this voltage to 230V/

110V by R284 on the Micon board.

13. Close Bypass Fuse (& Switch ON

Bypass MCB ‘S6’ if it is present),

switch ON bypass supply. (Note: In case of 20KVA UPS systems fuse is

mounted on the Base instead of fuse holder).

Hooter Sounds and LCD display will turn

on. "Initialising S400D" will appear, followed by Default screen. Input LED will glow.

Rectifier will turn On. Rectifier LED on

LCD display will glow. On LCD display, Inverter LED and Inverter

Load LED will glow. Output KVA, Voltage &

frequency will be displayed on LCD display in main screen.

Inverter will get synchronized with Bypass.


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14. Locate Micon board & Switch ON

Bypass Switch ‘SW5’.

15. By multimeter check is there any

short circuit at load side.

16. Connect AC clamp meter in the load

cables. Switch ON the MCB ‘S7’,

Load will be connected to the UPS.

Check the load current.

17. Check Input, Output. Bypass

voltage & current readings on LCD

Display. If necessary, set the output

voltage by preset R244A and output

current by preset R267A on Micon

board.

18. To check battery connections,

switch OFF 3 phase input supply.

Check inverter is running on battery

19. Check UPS output voltage & current

on LCD display when UPS is running

on battery.

20. Switch ON 3-phase input again.

Check battery current by DC clamp

meter again. It should not be more

than set value.

Bypass LED on LCD display will glow.

Output KVA, Voltage & frequency will be

displayed on LCD display main screen.

On LCD Display, input & rectifier LED will

be switched OFF and battery LED will glow.

On LCD Display, Input & rectifier LED will

glow.

2.5 Load Power Down / Up Procedure: 2.5.1 Load power down procedure (for the single module)

Note: You should follow this procedure if you want to shut down your load for a

short period or at the end of working day.

Action Response

1. Open the front cover of the UPS

2. Put Switch the MCB ‘S7’ in OFF

position.

3. Switch OFF ‘ON\STANDBY’ switch‘S2’.

4. Close the front cover of UPS

Load will turn OFF

Inverter, bypass & load will turn OFF.

2.5.2 Load power up procedure (for single module)


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Action Response

1. Switch ON ‘ON\STANDBY’ Switch ‘S2’.

2. Open the front cover of UPS. Switch

ON the MCB ‘S7’.

3. Close the front cover of UPS.

Inverter, bypass & load LED will glow.

Load will be connected to the UPS.

2.6 UPS Shut Down Procedure (for Single Module) Following steps are to be followed if you want to shut down the UPS.

Action Response

1. Open front panel. Switch OFF MCB

‘S7’.

2. Remove the UPS Top cover locate

Micon Board, switch OFF SW5. Bypass

will be switched OFF.

3. Switch OFF inverter switch ‘SW4’ on

micon board. Inverter will be

switched OFF. Note: inverter & Bypass can be switched OFF

only by switching OFF STANDBY switch S2

mounted on the backside of UPS. (no need to

follow steps 2,3).

4. Switch OFF rectifier switch ‘SW3’ on

Micon board. Rectifier will be switched

OFF.

5. Switch OFF 3-phase input supply&

bypass supply. Open the input

breaker of UPS. Also open bypass

fuse switch F3.

6. Open the battery fuse F1, F2 LCD

Display will be switched OFF.

7. Close the front cover of UPS.

Load will turned OFF.

On LCD display Bypass LED will turn OFF.

On LCD display inverter & inverter load

LED will turn OFF.

On LCD Display the rectifier LCD will be

turned OFF

ON LCD Display input LED will turn OFF

2.7 UPS Startup Procedure [for (1+1) parallel module]


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Note 1: Switch ON the UPS as per start up procedure mentioned in section 2.4 for single module.

Note 2: Switch OFF the UPS individually as per UPS shut down procedure mentioned in section 2.6 for

single module.

After ensuring the above procedure following steps are to be followed,

Action Response

1. Switch OFF Load Externally (by load breaker).

2. Do not Switch ON the MCB ‘S7’.

3. Locate parallel Interface board

100216120044 at the backside

(inside the box) of the UPS I &

Dummy Interface Board -

100204120018 at the backside of the

UPS II. Connect paralleling flat cables

(supplied along with UPS system) one

end to parallel interface boards

connector CN2 of UPS I. Connect

other end of the flat cable to Dummy

interface boards connector CN2 of

UPS II.

4. Switch ON 3-phase power supply at a

time to both the UPS (UPS I & UPS

II).

5. Follow single module switch ON

procedure to switch on UPS I. As the

UPS I turns ON, follow same

procedure to turn ON UPS II. Keep

battery fuses (F1, F2) open. Check

voltage between UPS I o/p L (U2) and

UPS II o/p L (U2). It should not be

more than 6VAC. If necessary set o/p

voltage of UPS I & II to 230/ 110(in

case of S400D, 110V UPS) VAC to get

this value less than 6V.

6. If the voltage difference is less than

6V then Switch OFF UPS I & then UPS

II as per the single module switch

OFF procedure.

7. Connect the O/P shorting cables one

end to output terminal U2-N2 of UPS

I & the other end to the output

terminal U2-N2 of UPS II

respectively.

8. Connect True RMS AC clamp meter in

Output shorting cable.

On LCD Display Input LED of both the UPS

will turn on.

On LCD display in OPERATION – UPS MODE menu, Display will show UPS I & II are

paralleled. Master UPS will be synchronised to Bypass & slave UPS will be synchronised to

Master.


35

9. Switch ON 3 phase power supply at

time to both the UPS (UPSI & UPS II).

10. Follow single module switch ON

procedure to switch ON UPS I. As the

UPS I turns ON, follow same

procedure to turn ON UPS II. At the

same time monitor the circulating

current in the Output shorting cable.

It should not be more than 10% of

full load current (for 10KVA, 230V <

4.3A & for 20kVA, 230V<8.6A & for

10kVA, 110V<8.6A, for 5kVA,

230V<8.6A) Keep fuses (F1, F2)

open.

11. Switch On Load externally (by load

breaker). By True RMS AC clamp

meter in the Output cable of UPS I &

UPS II measure approximately 50%

load sharing.

12. Close the battery Fuses / breaker

(F1, F2) of UPS I & then of UPS II.

13. At a time switch OFF Input supply of

both the UPS. Check both the UPS

inverters are running on batteries.

Check the 50% load sharing between

UPS I &UPS II By DC clamp meter

Check both battery current of UPS I &

UPS II in their battery cables, It

should be as per set value (by AH of

battery).

14. At a time switch ON Input supply of both

the UPS.

On LCD display in OPERATION – UPS MODE menu, Display will show UPS I & II are

paralleled. Master UPS will be synchronised to

Bypass & slave UPS will be synchronised to

Master.

In the main screen of LCD approximately

50% KVA of the 100% load KVA will be displayed.

On LCD display, INPUT & RECTIFIER LED’S

will turn OFF and BATTERY LED will turn ON.

On LCD display INPUT & RECTIFIER LED’S will turn ON & BATTERY LED will turn OFF.

2.8 Load Power Down/Up Procedure for PARALLEL module 2.8.1 Load power down procedure

Action Response

1. Remove Front cover of both the UPS,

Switch OFF MCB ‘S7’ of UPS I in OFF

Position. Check total LOAD will

transfer to UPS II.

2. Switch OFF MCB ‘S7’ of UPS II in OFF

position. Check total load will be

switched OFF.

3. Switch OFF ‘ON/STANDBY’ Switch ‘S2’

Inverter load LED of UPS I will turn OFF.

Inverter load LED of UPS II will turn OFF.


36

of UPS I & then of UPS II. This will

switch OFF Inverter & Bypass but

battery charger will remain ON to

charge the batteries.

4. Close the front cover. Note: This will continue battery charging.

Inverter & bypass LED of UPS I & UPS II will

turn OFF.

2.8.2 Load power up procedure

Action Response

1. Remove front cover of both the UPS.

Switch ON / STANDBY Switch ‘S2’ of

UPS I & then of UPS II. UPS I & UPS

II turns ON.

2. Switch ON the MCB ‘S7’ of UPSI.

Check total LOAD will be on UPS I.

3. Switch ON the MCB ‘S7’ of UPS II.

Check 50% load sharing between UPS

I & UPS II.

4. Close the front cover.

Inverter & bypass LED of UPS I & UPS II

will turn ON.

Inverter load LED of UPS I will turn On.

Inverter load LED of UPS II will turn On.

2.9 UPS Shutdown Procedure for (1+1) Parallel Systems

Following steps are to be followed if you want total shut down of the UPS.

Action Response

1. Remove top & front cover of both the

UPSI and UPS II.

2. Switch OFF MCB ‘S7’ of UPSI. Check

total LOAD will transfer to UPS II.

3. Switch OFF MCB ‘S7’ of UPSII. Check

total load will be switched OFF.

4. Locate Micon Board. Switch OFF ‘SW5’

“Bypass Switch” on Micon Board of

UPS I. Switch OFF SW4 “Inverter

Switch” on Micon Board of UPS I

Inverter will be Switched OFF.

5. Switch OFF ‘SW3’ “Rectifier Switch”

on Micon Board of UPS I Rectifier of

UPS -I. Rectifier will be switched OFF.

6. Repeat same procedure for UPS II.

7. Switch OFF ‘S2’ on the backside of

Inverter load LED of UPS I will turn OFF

Inverter load LED of UPS II will turn OFF.

On LCD Display Bypass LED of UPS I

will turn OFF.

On LCD display Inverter LED of UPS I will turn OFF.

On LCD Display Rectifier LED of UPS I

will turn OFF.


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both the UPS. Switch OFF Input/

bypass supply of both the UPS.

8. Open fuses F1, F2 and F3 (& bypass

breaker ‘S6’ in case S410D-110VAC)

of both the UPS.

9. If required remove parallel flat cable

between UPS I & UPS II.

10. Close top & side covers of both the

UPS. Note:For 20KVA since bypass fuse is mounted on Fuse Base, Switch OFF Bypass

breaker.

LCD Display of both the UPS will be switched

OFF

2.10 Alarms and Indications What follows is a description of the status of the LED’s for various state of operation

of the UPS. Do note that the verbose description of each of the UPS status is

displayed on the LCD screen.

2.10.1 Normal operation

The LED indications in this mode of operation is as follows

LED Name Status

1 Input ON

2 Rectifier ON

3 Battery OFF

4 Inverter ON

5 Load [Inverter] ON

6 Load [Bypass] OFF

7 Bypass ON/OFF

8 Alarm OFF

Do note that in this case the Bypass LED state depends on the status of the bypass

and in no way poses a problem to the load.

Parameters such as the output voltage, load and battery charge status can be read

OFF the LCD display.

2.10.2 Mains failure


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The LED indications in this mode of operation is as follows

LED Name Status

1 Input OFF

2 Rectifier OFF

3 Battery ON

4 Inverter ON

5 Load [Inverter] ON

6 Load [Bypass] OFF

7 Bypass ON/OFF

8 Alarm ON

There are two cases of mains failure –

1. If the UPS looses mains supply at the input, LED1 will go OFF.

2. The mains voltage goes out of the acceptable input voltage specification the input

LED will flash.

Both these conditions have to be considered as mains failure since in both the cases

the input supply is not deemed it for rectification as a result the rectifier will be

switched OFF and the inverter will start supplying the load power by taking the

battery power as the input supply source.

In both the above conditions a reset table audio alarm will be sounded.

Here again the status of the Bypass LED depends on the presence or absence with in

specification of the bypass supply. Do note that if the bypass supply is not present

then the load power will be shutdown if the mains power fails to return before the

batteries gets fully discharged.

The beeping rate will increase as soon as the backup time reaches the set battery

low time limit. As soon as this stage is reached you should immediately save your

data and shutdown all the connected loads, because soon the battery will reach the

end of discharge limit and shutdown the inverter. 2.10.3 Other fault or alarm conditions

Fault conditions are those which has hindered the normal operation of the UPS e.g.

rectifier failure or inverter failure etc.

Alarm conditions are those conditions which do not affect the operation i.e. continued

supply of load power, of the unit immediately but which may lead to the cause of

disruption of load power, e.g. mains failure.

In the case of S400D all these conditions are displayed on the LCD panel in the

default screen. In case of multiple alarm or fault condition you can browse through

the same using the UP/DOWN cursor keys.

2.11 Operator Trouble shooting Guide


39

The following section will give you a detailed interpretation of the status indicated by

the LED and LCD display and the action to be carried out if the same is encountered.

In any case seek qualified assistance - in the first instance this should be sought

from the site engineer who will then contact the nearest ENP Customer support

center for further assistance.

The front panel display consisting of the LED mimic and the LCD display act as a

excellent tool for diagnosing the present status of the system.

Lets start with the LED display.

CHAPTER 3


40

MAINTENANCE

In this chapter we will have a look at the various issues involved in the maintenance

of the S400D unit. Maintenance of any unit ensures that you get the maximum out of

the equipment and prevents any last moment crisis. The maintenance routine on the

S400D unit can be differentiated in to the following categories based on the time

interval between successive maintenance routine.

• Daily checks

• Monthly checks

• Scheduled maintenance

3.1 Daily or Routine Checks Although the UPS is maintenance free the following checks will ensure the effective

and trouble free working of the UPS.

• Ensure that the ventilation space around the front and back of the UPS is not

obstructed. • Check that the ambient temperature of the room is with in 40 degree centigrade

and that the room is well ventilated and dust free. • Check for any fault indications on the LCD/LED display. In case of any refer to

the user manual or call for assistance.

3.2 Monthly Checks

In this case carry out all the steps as mentioned in the above section – 3.1 Daily or

routine checks and then carry out the following steps.

When the UPS is fully loaded log the UPS output voltage and load current. This will

help in detecting any output voltage variation and will also help in keeping a track of

the output load thus preventing any in-advert ant overload. In case of a variation in

output voltage outside the specified limit of the S400D unit contact the nearest ENP


41

representative immediately. In case of a increase in load, find out the cause for the

increase in load and whether the load qualifies to be put at the UPS output.

3.3 Scheduled Maintenance Checks

• Before shutting down the system note down the output voltage, frequency and

load on the unit.

• If any fault or warning conditions are found being displayed on the LCD/LED

display serve the same before proceeding with the maintenance of the UPS.

• Shutdown the UPS following the recommended shutdown procedure. (refer section

2.6 or 2.9)

• Gain full access to the UPS PCB compartment at the top and the power

compartments by removing the front top and side covers.

• In case the load is not being supplied via the maintenance bypass disconnect the

input, bypass and battery power connections in order to ensure that the UPS is

totally isolated. If the load supply is being supplied via the maintenance bypass

isolate the UPS from the mains using the input MCB, bypass and battery fuse holder.

Double check the same using a multi-meter.

• Carry out a through visual examination of the UPS power component and

subassemblies, pay particular attention to the following:

o Electrolytic capacitor : Check for signs of leakage or buckling.

o Magnetic components : Check for signs of overheating, security of fixture

and signs of de-lamination.

o Cables and connections : check all cables for chaffing, fraying or signs of

over heating. Also check that all cable connections are tight and all printed

circuit board connectors are secure.

o Printed circuit board : Check the cleanliness and integrity of the circuit

boards and replace if any signs of deterioration are found.

• Thoroughly check the batteries paying attention to the following points

o General condition : Examine the battery case for signs of deformation, cracks

or general physical deterioration.

o Cables and connections : Examine the cables for signs of deterioration and

ensure that all connections are securely fastened.

• If necessary thoroughly clean out the inner sections of the UPS using low pressure

air to remove any dust or debris.

• Re-assemble the UPS. However keep the top cover open so as to have access to

the micon board.


42

• Follow switch ON procedure to start the UPS (refer section 2.4 or 2.7) Maintenance log

To be filled on a daily basis

Legend:

Vout: Output Voltage Vbyp: Bypass Voltage Mode: DC Bus Mode Vin:

Input Voltage

Iout: Output Current Fbyp: Bypass Frequency Vbat: Battery Voltage Iin:

Input Current

Fout: Output Frequency Vdc: DC Bus Voltage Ibat: Battery Current Fin:

Input Frequency


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Alarm log

To be filled at the occurrence of an alarm condition

Alarm log no.:

Corresponding Maintenance log no.:

Date: Time:

Problem observed:

LED NAME STATUS

1 INPUT

2 RECTIFIER

3 BATTERY

4 INVERTER

5 LOAD (INVERTER)

6 LOAD (BYPASS)

7 BYPASS

8 ALARM

PARAMETER VALUE

OUTPUT VOLTAGE

OUTPUT CURRENT

OUTPUT FREQUENCY

BYPASS VOLTAGE

BYPASS FREQUENCY

DC BUS VOLTAGE

DC BUS MODE

BATTERY CURRENT

INPUT VOLTAGE

INPUT CURRENT

INPUT FREQUENCY


44

LCD ALARM MESSAGE YES / NO

MAINS VOLT NOT OK

RECT ANTISAT. TRIP

RECTIFIER OVER VOLT

RECTIFIER SW OFF

DC VOLT HIGH

DC VOLT LOW

INVERTER VOLT HIGH

INVERTER VOLT LOW

INVERTER ANTISAT. TRIP

TRANS-RETRANS FAULT

BYPASS VOLT NOT OK

BYPASS NOT AVAILABLE

BYPASS FREQUENCY BAD

OUTPUT OVERLOAD

O/P OVERLOAD TRIP

OUTPUT SWITCH OFF

FRONT PANEL UPS OFF

UPS REAR SWITCH OFF

HIGH TEMPERATURE

AMBIENT TEMP HIGH

INV/RECT OVER TEMP

UPS IN FREE-RUN

BATTERY TEST FAILED

BATTERY TEST PASSED

BATTERY UNDER TEST

BATTERY PATH OPEN

BATTERY FUSE OPEN

BATT LOW PREALARM

DIAGNOSTIC MODE SET

20kva ups manual

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