SCHEDULE-II TECHNICAL SPECIFICATION OF 0.5S CLASS HT STATIC TRI-VECTOR ENERGY

METER (FOR CONSUMER NET METERING) 1. SCOPE:

This specification covers design, manufacturing, testing and supply of high precision three phase four wire static tri-vector energy meters of accuracy class 0.5S or better, capable of performing functions of tariff meters for HT consumers & load survey applications.

2. STANDARD APPLICABLE : The meters shall be of class 0.5S accuracy and shall meet all the requirements specified in standard specifications IS:14697/1999, IEC:62053-22 and CBIP report no.325, with its latest amendment.

3. CLIMATIC CONDITIONS : The meter shall be suitable for operating under the following climatic conditions and shall be capable of maintaining desired accuracy under duly hot tropical climates.

a Maximum ambient air temperature 55oC B Maximum ambient air temperature in shade 45oC C Maximum temperature attainable by the meter

exposed to sun 60oC

D Minimum ambient temperature (-) 5oC E Average daily ambient air temperature 40oC F Maximum relative humidity 95% G Number of months of tropical monsoon condition 4 months h Maximum altitude above mean sea level 1000 meters I Average annual rain fall 150 cms J Maximum wind pressure 200 kg/sq.m K Isokeraunic level (days per year) 40 L Seismic level (horizontal accn.) 0.30 g m Permitted noise level 45.db

4. TECHNICAL REQUIREMENT & DESIGN CRITERION 4.1 Meters are required for installation in the premises of HT consumers or in sub-stations.

The basic system parameters for which these meters will be used shall be as under:-

Primary voltage 11KV/√3, 33KV/√3, (phase to neutral) Secondary voltage 110/√3 volts (phase to neutral) Primary current 11KV – 5A to 25 Amp. for tariff meters

33KV – 5A to 150 Amp. for tariff meters Secondary current 1Amp, 5 Amps

Meters shall be designed on 3 phase 4 wire measurement principle & should have 3

current & 3 voltage measuring circuit i.e. one for each phase. 4.2 The meters shall work satisfactorily in the absence of neutral and shall work even if any

two voltage wires are extended to the meter. 4.3 The meters shall be designed for 1Amp or 5Amps CT Secondary and 200% overloading.

4.4 Accuracy - 0.5S

4.5 The meters shall have Non Volatile Memory (NVM) for storage of Billing and Tamper data. There shall be no battery back up for retaining data.

4.6 Computation of demand shall be on the basis of Real Time Clock of the meter itself.

4.7 Meters covered under this specification shall be fully static type with non volatile memory to register various billing parameters and complete with other features as detailed in this specification. Any other design meeting technical specification requirements or features/accuracy etc., better than this specification and as per relevant IEC/IS shall also be acceptable.

4.8 Meters shall be suitable for measurement of energy and other billing parameters within the specified limits of errors under balanced and unbalanced load conditions in a poly phase network.

4.9 POWER FACTOR RANGE:- Meters shall be suitable for measurement of billing parameters with specified accuracy for PF range Zero (lag) – unity – Zero (lead)

4.10 Computation of apparent energy shall be based on following principle. P2=Pa2 + Pb2 + Pc2 Q2=Qa2 + Qb2 + Qc2 S2=P2 + Q2 S stands for Total apparent power Sa, Sb & Sc stands for apparent power in phase A, B & C P stands for Active energy Q stands for Reactive energy

4.11 KVAh computation shall be on the basis of power factor lag+lead Principle / lag only principle. It should also be possible to change from (lag+Lead) to lag only principle with the help of MRI & BCS.

4.12 Dial multiplying factor for the specified CTs & PTs ratio shall be unity.

4.13 The display of energy & also demand shall have minimum seven digits with fixed decimal. The energy & demand shall be displayed in KWH & KVA or MWH & MVA respectively depending on CT and PT ratio.

4.14 The meter shall be programmable by the user for TOD timings, billing dates etc.

4.15 The meter constants shall be freezed and it shall not be possible by the manufacturer or the user to alter the meter constants at factory or at site.

4.16 Provision shall be made to read various billing parameters and also load survey data through a Common Meter Reading instrument. This arrangement can be through an optical coupler or any other suitable device galvanically isolated from meter circuit. Provision shall be made to seal the optical coupler to ensure proper security.

4.17 Indications shall be provided on the display to show the healthiness of phase voltage and also the status of abnormal electrical connections, if any persistent at the meter terminals.

4.18 Meters shall be designed for satisfactory operation with the following supply

voltage/frequency variation:- Voltage - V.Ref + 15% to -30% as per standards Frequency - 47.5 Hz to 52.5 Hz (ref. frequency 50 Hz) For above voltage and frequency range, the meters shall measure, register and display

various parameters as per standards. 4.19 DISPLAY PARAMETERS 4.19.1 The data shall be displayed on LCD display (backlit type), which shall be clearly visible

from a distance in 7 segment - 7 digits (Min.) having minimum character height of 10 mm. It should be possible to easily identify the displayed parameters through symbols / legend on the meter display itself.

4.19.2 The display of the following parameters shall be continuously scrolling one after the other through a push button. The display shall have ‘ON’ time of at least 10 seconds of each measured value. Display parameters shall move forward if the button is pressed prior to the programmed time for display of each parameter.

4.19.3 The display Parameters and their Sequence shall be as mentioned below:-

a) On pressing of Read push button i.e. billing parameters

i LCD segment check ii Date DD: MM: YY iii Time HH:MM:SS iv Cumulative active energy import KWh/MWh v Cumulative active energy export KWh/MWh vi Cumulative apparent energy during KWh import KVAh/MVAh vii Cumulative apparent energy during KWh export KVAh/MVAh viii Cumulative active net (Imp-Exp) KWh/MWh ix Maximum demand during the month Import mode KVA/MVA

x Maximum demand during the month Export mode KVA/MVA xi Cumulative Maximum demand during Import &

Export mode separately KVA/MVA

xii MD reset counter No. of reset xiii Tamper Information

b) Programmable Optional Requirements of display on pressing push button.

i.) Phase Current - A ii.) Phase Voltage - KV

iii.) Instantaneous active Power - KW/MW iv.) Instantaneous reactive Power - KVAr/MVAr v.) Instantaneous demand - KVA/MVA

vi.) Instantaneous PF - vii.) Frequency - Hz

viii.) Reactive energy import while KWH import ix.) Reactive energy export while KWH import x.) Reactive energy import while KWH export

xi.) Reactive energy export while KWH export xii.) Active TOD energy registers import

xiii.) Apparent TOD energy registers import xiv.) TOD MD import xv.) KVA (RISING DEMAND) Import/Export

xvi.) Billing TOD MD import xvii.) Billing main active energy import

xviii.) Billing active TOD energy import xix.) Billing main apparent energy import xx.) Billing apparent TOD energy import

c) Auto display:

i.) Date DD:MM:YY ii.) Time HH:MM:SS

iii.) KWH cumulative Import/Export iv.) KVAH cumulative Import/Export v.) Cummulative active net (Imp-Exp)

vi.) KVA Maximum demand during the month Import/ Export vii.) Instantaneous power factor

viii.) Active TOD energy registers ix.) Apparent TOD energy register x.) TOD MD

xi.) Billing TOD MD xii.) Billing main active energy

xiii.) Billing active TOD energy xiv.) Billing main apparent energy xv.) Billing apparent TOD energy

4.19.4 VIEW PARAMETERS (display/information required through MRI/BCS)

i.) Reactive energy import while KWh import ii.) Reactive energy export while KWh import.

iii.) Reactive energy import while KWh export iv.) Reactive energy export while KWh export v.) Present demand - KVA/MVA

vi.) Power Factor vii.) Maximum demand during the month KW/MW Import & Export

viii.) Tamper information. ix.) All the balance parameters of (a) & (b) above, where parameters at (b) (xii) to

(xx) shall be Import/Export parameters. Meter Reading at Power Outage:

Provision to read the meter in no power condition shall be made. The same push button shall be used to display the readings during power outage. A suitable internal/ external device could be used so that display of readings could be possible at least twice considering that continuous power outage will not be for a period of exceeding 24 Hrs. Reading through MRI shall also be possible in power outage condition.

4.20 MAXIMUM DEMAND REGISTRATION 4.20.1 Maximum demand computation shall be based on sliding window concept/ block interval

concept (user selectable) with integration period of 30 minutes or 15 minutes programmable. For sliding window MD, there shall be three updates of 10 minutes or 5 minutes for 30 minutes or 15 minutes integration period respectively. By default computation shall be based on sliding window concept and integration period should be 15 minutes with 5 minutes update.

4.20.2 The MD integration cycle shall be on the basis of real time. However the real time clock

of the meter shall be used only for the purpose of time matching. For computation of maximum demand the internal clock of the meter shall be made use of.

4.20.3 Provision should also be made for automatic reset of MD at pre-defined period. The

billing parameter at the time of automatic reset of the MD along with one previous record shall be stored and display shall be possible on demand. Period as to when automatic reset of maximum demand is required shall be programmable. In addition reset of maximum demand shall be possible through a hand held terminal capable of communicating with the meter. In every case the design shall include provision of updating of cumulative demand register with updating of reset counter.

4.21 TAMPER DETECTION FEATURES :

a) Missing Potential - to indicate loss of potential in any or two phases of potential supply. The identification of phase, date and time of first occurrences, date and time of last tamper restore and cumulative number of tampers shall be indicated.

b) Reversal of CT - to indicate identification of phase, number of cumulative tampers (any one or two phase’s reversal).

c) Current unbalance - to indicate number of hours there has been unbalance of current beyond the prescribed limits.

d) External magnetic influence – In the event of logging of presence of abnormal magnetic induction with date and time, the positive variation of error may be beyond the prescribed limit as prescribed in relevant standard/CBIP-88 report with latest amendments.

Along with the information, the meter shall also record the instantaneous values of all

three-phase voltages; three-phase currents and three-phase power factors to ascertain/elaborate the existing system conditions during all the type of tamper events. The meter shall record 200 events of aforementioned tampers (occurrence + restoration) along with the date and time of occurrence and restoration of each and every event. The event recording shall be compartment-wise, roll over type i.e. it shall always maintain record of last 200 events occurred. Logics for design of above indicated tamper, the value of voltage, current, time etc. to be selected for design of tamper logics shall be in consultation with the purchaser. The tamper at (a) above is to be included in the DISPLAY PARAMETERS and information regarding rest of the tampers/unbalance etc. are required to be included as information in the VIEW PARAMETERS.

e) Over current - to indicate number of hours, there has been over current beyond the CT ratio limits.

f) Power Fail - The meter should log power down and power up event.

g) Cover opening : If attempt is made to open the meter body, the meter shall detect /log with the date and time of meter body opening tamper, even in absence of supply. This tamper shall also be displayed on the meter LCD with tamper information.

h) Application of abnormal voltage /frequency: A) The accuracy of the meter, Real time clock malfunction/disturbance, Memory data corruption, meter functioning hang up etc. should not occur with the application of abnormal voltage/ frequency such as spark discharge of approximately 35KV with 0.01-10 mm spark gap in any of the following manner when applied for 10 minutes: a) On any of the phases or neutral terminals b) On any connecting wires of the meter c) At any place in load circuit d) Spark on meter body. e) Spark on the optical and RS 232 port.

B) Meter should also be immune to tamper by the application of remote loop induction device (jammer).

h) Security - The meter shall have the following unique security feature for different levels described below.

Password Security level Operation 1 READ ONLY OPERATIONS

Read only such as Readings, Load Survey Event Reading.

2 LOW LEVEL RIGHTS Set time, MD reset, Tamper reset

3 HIGH LEVEL RIGHTS Tariff definitions, change bill dates, Persistence time change, MD reset options, Load survey configuration, changes in energy definition. Change of passwords for level 1, 2 and 3.

1. Passwords shall be zero for all 3 levels initially. With zero passwords the operations will be available without getting password clearance. This will allow the user to choose whether to use passwords to prevent readings in particular, or to use only the authenticators to validate any data change transactions at levels 2 and 3.

2. Give tamper/fraud evidence where it is not possible to be tamper / fraud proof. This

means that meter has to record all authenticated transactions performed with it and communicate the recorded data in meter readings. Recording may include lock/unlock, password change, and transactions like change of energy definition, billing date programming, change of tariff for TOD tariff, tamper reset, load survey configuration, MD IP change etc. operation which involve change in meter configuration given in BCS scheduling with date and time.

4.22 Provision shall be made for a push button to initiate display parameter in the front of the meter.

4.23 Provision shall be made for MD reset push Button with provision to seal it.

4.24 An operation indicator in the form of blinking optical Signal shall be provided to indicate that the meter is operating satisfactorily. Supplier has to ensure the blinking optical signal is of weighted pulse and this can be effectively used for verification of accuracy & it should also be ensured that the intensity of the blinking signal is sufficient for detection by the optical sensor.

4.25 Meter shall be programmed for auto display of billing parameters with provision of:- - Programmable time display of each billing parameters. - Programmable time of display cycle.

4.26 Tamper information shall be roll over type and shall be FIFO based. 4.27 TOD Tariff/Demand: The meter shall be capable of registering time of day energy consumption data on stand-

alone basis. The meter shall be provided with an internal time clock and timer both controlled by a quartz crystal with a battery totally independent of power supply and shall be capable of being set into a minimum of 6 time zones in a 24 hour cycle to cover morning and evening peak and off peak periods separately. Sufficient registers shall be provided to record and display the "display parameters” (Billing parameters) i.e. export & import active and apparent energy and demands for each time zone.

It should be possible to change the time period for these registers through the hand held

meter-reading device with special authenticated command from the BCS so that only authorized person(s) can make such changes. The main control for this change along with proper security password/code should be available on the computer located at the metering office. (The meter should be able to record energy consumption up to the specified time of day {as programmed} to help conducting regular energy balance study).

4.28 Load Survey Capability: It should be possible to store previous data of at least 31 days x 4 Parameters for interval

of 15 minutes or 62 days x 4 parameters for interval of 30 minutes or 62 days x 2 parameters for interval of 15 minutes etc. (depending upon integration period and number of parameters) of energy consumed and also demand i.e. load survey is needed for the demand and energy consumed in every MD integration time cycle (15 min. or 30 min.). The demand to be recorded in the load survey shall match with the demand recorded in the "DISPLAY PARAMETERS". The demand and energy consumed shall be recorded separately under energy Import and energy Export periods. Load survey based on MD integration period shall be selectable from the following parameters. i) Real time clock,date and time.

ii) Frequency iii) Voltage ,V Rn iv) Voltage ,V Yn v) Voltage ,V Bn

vi) Energy Active Import vii) Energy Net Active Energy

viii) Energy Active Export ix) Reactive lag While active import x) Reactive lead While active import

xi) Reactive lag While active Export xii) Reactive lag While active Export

It should be possible to retrieve load survey data by hand held meter reading device

through the communication port provided on the energy meter. Out of the above-indicated parameters included in the load survey capability it shall be possible to select up to four parameters for load survey data. To clarify, the load survey memory shall be capable of accommodating and storing every 15 minutes data of at least four parameters. The choice of selecting any four parameters out of the parameters indicated above shall be user selectable.

4.29 REAL TIME CLOCK AND BATTERY:

The MD integration cycle shall be on the basis of Real time clock of the meter. The maximum drift in real time clock of the meter shall not exceed ± 3 minutes per year and its oscillator crystal should be temperature compensated for temperature range of 0oC to 50oC. A lithium battery of adequate storage energy shall be used for energy supply to real time clock during no voltage or power off condition. The metering data stated above including integration etc shall be independent of battery. The minimum life of battery should be ten years.

4.30 BILLING POINT REQUIREMENTS:

The predefined date and time for registering the billing parameters of active, reactive, apparent energies of import and export along with its supported TOD registers and MD/ TOD MD as well as Tamper Count and Power-On hours readings shall be at 00.00 hours of the first day of each calendar (billing) month or any predefined date of the month. All billing parameters shall be transferred to billing registers

The above billing data, TOD register's data, load survey data, tamper information and instantaneous parameters data shall all be retrievable through the meter's communication port through a common meter reading instrument (CMRI) and shall be transferred (downloaded) to a PC with Windows based software to get complete details in numerical and/or graphic form. The necessary base computer software (BCS) for this purpose shall be provided by the supplier with complete details.

Further, apart from instantaneous parameters like voltage, current, PF, and readings of

billing parameters, energy registers, TOD registers etc., the following additional parameters should be made available at the BCS end: a) MD reset count. b) Billing Parameters for last 12 Histories.

4.31 It should be possible to down load view parameters and load survey data on to

compatible computer and obtain full details of demand and consumption in statement form and also in graphic form.

Meters shall be four Quadrant meter capable of recording active, reactive and apparent energy and also demand in the four quadrants.

Meter shall be capable to measure fundamental frequency energy and total energy.

Meters shall be designed to withstand EMI-EMC level in accordance with the clauses as mentioned in IEC/IS Standards for Class 0.5S. It is obligatory on the part of the bidder to confirm this requirement and also to submit a type test/test report confirming successful performance.

4.32 Necessary software for various programmable features as discussed above in the meter

and also necessary software for the IBM compatible computer as described below to obtain various details as discussed above and additional if any shall be provided by the supplier. No separate cost will be borne by the purchaser on this account. The software shall include provision for load survey, graphic presentation and other reports generation in BCS from the data collected from the meter through meter reading instruments.

In the forthcoming paragraphs requirement of a D-port/RJ-11 for tele-metering purpose has been described. Meters covered under this tender will be used for metering at our Sub-stations or in the premises of HT consumers for tariff applications. Instantaneous parameters, load survey data and tamper information etc. will be monitored remotely through computers installed in central station. The data from meter will be transferred to the central station through GSM/GPRS communication links, as such meter should have capability of remote meter reading. It will be obligatory on the part of the bidders to supply the software in adequate copy needed for remote meter reading. No separate cost towards remote metering reading software will be born by the purchaser.

4.33 Lithium or any better quality battery of adequate storage energy shall be used for energy

supply to real time clock during no voltage or power off condition. 4.34 Under weak battery condition, an indication shall appear on MRI/Laptop/BCS. The life

of the lithium battery for supplying energy to real time clock during no voltage or power off condition should not be less than 10 years.

4.35 Output Device:- The meters shall have a test output in the form of a blinking LED for

testing the accuracy of meters. Testing shall also be possible through optical port accessible from the front and can be monitored with Meter Reading Instrument having high-resolution display.

The meters shall give high-resolution energy values directly to meter reading instrument.

The resolution will be sufficient to enable conduction of the starting current and accuracy test in less time. Meters shall have two numbers RS-232 communication port out of which one shall be galvanically isolated type and other D/RJ11 type for collection of data through the meter reading instrument and remote meter reading purpose. While designing these ports, due care shall be taken and it shall be ensured that damage to the meter/meter’s circuitry is not possible by injecting magnetic/electrical charges through these ports. A specific confirmation that these considerations have been taken care of shall be made by the bidder.

The port for load survey data collection shall be suitable to receive the coupler of MRI

and do certain changes in the meter configuration as discussed else where in the tender, should be possible through this and only this port. The other D-port/RJ-11 is exclusively meant for remote meter reading purpose only. Communication with meter through this port (D/RJ-11) for programming purpose should not be possible. Provision for sealing shall be made for both communication ports. For the output ports available on the meter, standard internationally approved protocol shall be adopted. A detail of protocol used is necessarily required to be intimated by the supplier to the purchasers. In case any proprietary protocol/API is used, it will be obligatory on the part of the bidders to furnish complete details of proprietary protocol to the purchasers so that there may not be any difficulty in extraction of data from the meter through the available ports when connected to the communication bus (prepared for some other data communication purpose).

4.36 The meter should have provision for testing of meter in the meter testing laboratory or

testing of meter at site with the help of ESS and phantom load test set and in order to reduce test time high resolution display on MRI should be provided.

4.37 Meter shall operate and record satisfactorily independent of phase sequence of input

supply so long as phase association between voltage and current circuits is in order.

4.38 The performance of meter should not be affected by the external electromagnetic interference such as electrical discharge of cable and capacitor, harmonics, electrostatic discharge and external magnetic field etc..

4.39 The basic meter shall be designed for overloading up to 200%

4.40 No setting point / setting register etc. shall be provided for adjustment of measurement errors.

4.41 Midnight energy data:

Cumulative energies shall be logged at 00.00 Hrs. of every day and shall be maintained for last 35 day on FIFO basis. These energy snapshots shall be possible to view at BCS level. Daily energy snapshot for the following energy shall be maintained:-

(i) Cumulative active energy KWH import/Export. (ii) Cumulative active net(Imp-Exp) (iii) Reactive lag while active import (iv) Reactive lead while active import (v) Cumulative apparent energy import/Export

4.42 BASE COMPUTER APPLICATION SOFTWARE

For efficient and speedy recovery of data read through CMRI/HHU, Base computer software shall be supplied with the following specifications: The BCS software shall be user friendly. Windows based Base computer software shall be supplied. Base Computer software shall give all details adequate for analysis and load surveys parameters. The software shall have the facility to convert all the consolidated information / data of selectable parameters into ASCII format. EDP department of purchaser can generate its own DBF (data base files) to downloaded all the required information into it.

i. Platform : The BCS shall be executable on all WINDOWS system. The BCS shall be

suitable to run on IBM compatible PC hardware platform.

ii. Meter Data Display :The software shall show electrical conditions existing at the time of reading the meter in tabular forms as well as graphical format (Phase diagram)

All the information about energy, maximum demand and their respective TOD register

reading, billing register readings shall be shown in a manner which user can understand easily.

All the load survey data shall be available in numerical as well as graphical format. It

shall be possible to view this data in a daily, weekly, and monthly format. The load survey graph will show values where the cursor is placed for the selected or for all parameters.

All the information about abnormal events shall be accompanied with date and time stamping along with 'snap-shot' of respective electrical conditions. This information shall be displayed in the chronological sequence in cumulative format as well as summary format.

The software shall be capable of preparing CMRI to read the meter information or time setting of the meter.

iii. Support Display: There shall be "user friendly" approach for viewing meter data of the

reading collected now or for the reading collected in the past. All information about a particular consumer will be sorted out and available at one place so that locating any consumer 's past data is easy. It shall be possible to retrieve/locate data on the basis of either one of the following particulars:

a) Consumer's ID/Numbers. b) Meter Sr. No. c) Date of meter reading. d) Location.

iv. The Data Transfer : It shall be possible to transfer data to and fro from CMRI to BCS

through serial interface. v. Remote Meter Reading option: It should be possible to read remote end meter using

dial up network/ GSM/GPRS infrastructure with configurable auto reading mode and manual mode. The auto dialling and reading mode shall have enough flexibility to define different groups and their priority orders to read the meter.

vi. Configurability : It shall be possible to have selective printing of all available data of the

meter. Print out should not include anything and everything available with the BCS. The software shall support "print wizard" whereby user can decide what to print. The user of the software need not revert back to the supplier of the software for modifying the software just to print what he desires.

BCS shall have facility to export data to ASCII or spreadsheet format for integrating with the purchaser's billing system. Here again an "Export wizard" or similar utility shall be available whereby user can select file format, what data to export, the field width selection etc.

vii. Security: The BCS shall have multilevel passwords for data protection and security. The

first level shall allow the user to enter the system. The different software features shall be protected by different passwords. The configuration of passwords shall be user definable. The software installed on one PC shall not be copyable on another PC.

viii. Help: The exhaustive online help shall be available with the software so that user can

use all the features of the software by just reading the help contents.

4.43 APPLICATION PROGRAMME INTERFACE (API) The bidder shall provide Application Programme Interface (API) to read their meters and convert the meter data as per IEEMA MIOS standard. Supply of API with the meter is mandatory.

5. CONSTRUCTION OF THE METER

5.1 Body of the meter shall be designed suitable for projection mounting. The meter should be made of high quality raw materials to ensure higher reliability and longer life. The meter should be compact and reliable in design e.g. to transport and immune to vibration and shocks involved in transportation/handling. The construction of the meter shall be suitable for its purpose in all respects and give stable and consistent performance under all conditions especially during dust storms/heavy rains/very hot days.

5.2 All insulating material used in the construction of the meter shall be non-hygroscopic non ageing and of tested quality. All parts that are likely to develop corrosion shall be effectively protected against corrosion.

5.3 Meters shall be installed in Sub-stations/lines/HT consumer's premises outdoor inside a

metal box, directly under the sun and extreme weather conditions. Suitability of such a use shall also be confirmed.

5.4 SEALING OF THE METER: Proper sealing arrangement shall be provided on the meter to make it tamper proof and avoid mishandling by unauthorised person. At least two (2) seals on the body, 2 nos. tamper evident sticker seals between the base and cover of the meter body, two (2) seals on the terminal block cover and one seal each on maximum demand device and communication port shall be provided. Beside body seal provided by the manufacturer, provision shall also be made to provide utility lash wire seals on the body. All the seals should be provided on the front side of meter only. Rear side sealing arrangement will not be preferred. The meter body one sealing screw shall be provided with good quality 7 digits numbered polycarbonate seal or any superior body sealing arrangement with embossing on sides, one side with the logo of firm and other side “MPEZ” The mumber of the seal shall be unique and should not be repeated in any case. Access to the working part of the meter should not be possible without breaking the seals. The polycarbonate seals shall have proper locking to avoid opening of the seal in any case by means of tampering.

Meter body cover and base shall be solidly welded (seamless) such that it should not be opened without breaking the meter body.

TRACKING SOFTWARE FOR SEALS: It is mandatory to provide Tracking and recording software for all new seals so as to track total movement of seals starting from manufacturing, procurement, storage, record keeping, installation, series of inspections, removal and disposal etc.

5.5 TERMINAL BLOCK COVER: The terminal block cover for the meter shall be extended transparent type, which can be sealed independently & over the meter cover. The terminal cover shall enclose the actual terminals, the conductor fixing screws and 10mm of the external conductors and their insulation for which the terminal cover shall be of extended type. The terminals shall not be accessible without removing the seals of the terminal cover when energy meter is mounted on the meter board.

5.6 CONNECTION DIAGRAM & TERMINAL MARKING:- The connection diagram of the meter shall be clearly shown on inside portion of terminal

cover and should not fade with time. Meter terminals shall also be marked and should appear in the above diagram.

Meter shall have a name plate clearly visible, secured against removal & indelibly and distinctly marked with all the essential particulars as per relevant standards i.e.

a. Manufacturer’s name and trademark b. Serial number c. Type and description d. Rated current, voltage and frequency e. Relevant ISS/IEC No. along with ISI certificate mark, wherever available. f. Meter constant shall invariably be indicated. g. Name of the owner, purchase order no. & date and month/year of manufacturing

shall be printed. h. Guarantee Period

5.7 ISI CERTIFICATION MARK: The meters must bear “ISI” certification mark

6. TEST 6.1 TYPE TEST:- The type test certificate for all tests as indicated in relevant standards

(with latest amendments) or CBIP report No.88 shall be furnished along with the bid. Type test certificates from any one of the standard laboratories NABL accredited for particular equipment/test shall only be considered. Type test report, amongst other details, should contain the following information clearly: Type of meter Class of Accuracy.

Type test certificate from educational institute(s) will not be accepted. The type test certificate shall not be more than 24 months old as on the date of opening of bid.

6.2 ACCEPTANCE TEST:- All acceptance test as per IS:14697/1999, IEC:62053-22 & CBIP report No.88 shall be carried out on the meter.

6.3 ROUTINE TEST:- All routine tests as per IS-14697, IEC:62053-22 & CBIP report No.88 shall be carried out on all the meters.

7. Installation :

The meter shall be verified as per the technical specification requirement at the utility testing lab before installation.

8. GUARANTEE

The Meters shall be guaranteed for 5½ years from the date of supply or 5 years from the date of installation, whichever is earlier.

In case it is observed that replacement/ repairs of equipments or its accessories is not being provided to us within reasonable period and proper response is not received from you, then apart from operating penalty clause (which provides for imposition of penalty/liquidated damages, risk purchase at your cost and cancellation of contract) the MPPKVVCL may also take suitable penal action against you which may include debarring you from all future business with the MPPKVVCL for a period which will be at the discretion of the MPPKVVCL.

9. MINIMUM TESTING FACILITIES: Manufacturer should posses fully computerized Meter Test Bench for carrying out

routine and acceptance tests as per relevant ISS. In addition this facility should produce Test Reports for each and every Meter. The bidder should have the necessary minimum testing facilities for carrying out the following tests.

i) A.C. Voltage test ii) Insulation Resistance Test iii) Test on limits of errors iv) Test on meter constant v) Test of starting condition vi) Test of no load condition vii) Repeatability of error test viii) Test of power consumption ix) Vibration test x) Tamper conditions - as per MPEZ Specification

The manufacturer should have duly calibrated ESS meter of class 0.1 or higher accuracy. Bidders should carefully note that the standard meters used for conducting tests shall be

calibrated periodically at NABL Accredited Test Laboratories and test certificates shall be available at Works for verification of Purchaser’s representative

10. QUALITY ASSURANCE PLAN: The designed life of the meter shall be minimum 20 years and to prove the designed life, the firm shall have at least the following Quality Assurance Plan:-

a. The factory shall be completely dust proof. b. The testing rooms shall be temperature and humidity controlled as per relevant

standards. c. The testing and calibrating equipments should be automatic and all test equipment

shall have their valid calibration certificates. d. Power supplies used in testing the equipment shall be distortion free with

sinusoidal, wave- forms and should maintain constant voltage, current and frequency as per the relevant standards.

e. During the manufacturing of the meters, the following checks shall be carried out:-

i. Meter frame dimensions. ii. The assembly of parts shall be done with the help of jigs and fixtures so

that human errors are eliminated. iii. The meters shall be batch tested on automatic, computerized test bench

and the results shall be printed directly without any possibility of human errors.

11. MANUFACTURING ACTIVITIES:- (i) Meter should be manufactured using SMT components and by deploying automatic SMT

pick and place machine and reflow solder process. Further, the Bidder should own or have assured access (through hire, lease or sub-contract) of above facilities.

(ii) Quality control should be ensured at the following stages:

(a) At PCB manufacturing stage, each board shall be subjected to computerized bare board testing.

(b) At insertion stage, all components should undergo computerized testing for conforming to design parameters and orientation.

(c) Complete assembled and soldered PCB should undergo functional testing using Automatic Test Equipments (ATEs).

(d) Prior to final testing and calibration, all meters shall be subjected to aging test (i.e. meters will be kept in ovens for 72 hours at 55°C temperature and atmospheric humidity under real life condition at its full load current. After 72 hours meters should work satisfactorily to eliminate infant mortality.

(iii) The calibration of meters shall be done in house.

12. PACKING:- Each meter should be shrink packed to avoid any scratches on meter body, dust from

entering etc. and should be packed in a cushion carton of 10 meter or any appropriate quantity.

The packing cases should be marked to indicate the fragile nature of the contents. 13. DRAWING AND TECHNICAL LEAFLETS:- Individual meters should contain connection diagram on transparent terminal cover. All other details such as general arrangement, installation details operation instructions etc. should be given in the manual, which shall be supplied to the consignee. Two sets of such manuals shall be supplied to each consignee and two sets to this office.

14. AFTER SALES SERVICE:- In order to provide prompt and smooth after sales support/service etc., it shall be preferred to post/engage an engineer/technician in M.P. preferably at Jabalpur by the manufacturer, who shall be fully conversant with the manufacturer’s meter, to attend any minor defects immediately and to educate the users about proper installation of meter and programming of MRI, base computer, taking reading, billing data, load survey, tamper information etc. through MRI and down load to PCs to get print outs etc.