Supply of Single Phase, Three Phase & Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CHAMUNDESHWARI ELECTRICITY SUPPLY CORPORATION LIMITED

For “Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction”.

Enquiry No : CESCOM/2026-27/IND0281

GUARANTEED TECHNICAL PRATICULARS FOR LT 3 PHASE 4 WIRE ELECTRONIC TRIVECTOR METER OF ACCURACY CLASS 0.5S

Sl.No Particulars Bidders offer

1 Maker's Name of the Company

3 Type of meter

4 System voltage with variations

5 Standard to which the meter conforms

a.Basic current (ib)

b.Minimum Starting current

c.Current overloading capability

d.Short time over current

7 Maximum current. I(max) continuously

8 Frequency with variations

a. Current range

b. Voltage range

c. Frequency range

d. Temperature range

15 Specific Dynamic Range

16 Specified working Range

18 Register (electronic)

19 Internal meter multiplying factor

20 Terminal Connection

21 Meter Earthing

22 Power loss in each current at basic current in VA & watt

23 Power loss in each voltage circuit at reference in VA & watt

24 Display device

a. Type of display i.e., LCD

b. Character size of display digits

c. No. of display digits used

ii. for parameter identification

d. Life of display unit (guaranteed)

e. Method adopted for display overflow

25 Maximum Demand

a. Parameters available

b. Integration period

c. Provision for automatic reset

d. Type of MD computation

26 Parameters to be displayed

A) Auto Cycle Display

2 Meter Serial Number

4 First Previous Month Cum kWh (b1)

5 Second Previous Month Cum kWh (b2)

6 First Previous Month MD in kW with date&

7 Billing Avg Power factor

9 Billing Power on Time in Days:Hours:Minutes

10 Phase wise Currents

11 Phase wise Voltages

12 Phase wise Instantaneous pf

13 Instantaneous total pf

14 Phase sequence

16 Instantaneous Apparent Power

17 Instantaneous Active Power

18 Instantaneous Reactive Power

19 Power Failure Count

20 Total Power Failure Hours

21 Total Tamper Count

24 Running MD in kW with date & Time

25 Cumulative kWh

26 Cumulative Lag kVArh

27 Cumulative Lead kVArh

28 Cumulative Apparent Energy

B)Push Button Mode:

2 Meter Serial Number

4 First Previous Month Cum kWh

5 Second Previous Month Cum kWh

6 First Previous Month MD in kW with date& Time

7 Billing Avg Power factor

9 Phase wise Currents

10 Phase wise Voltages

11 Phase wise Instantaneous pf

12 Instantaneous total pf

13 Phase sequence

15 Instantaneous Apparent Power

16 Instantaneous Active Power

17 Instantaneous Reactive Power

18 Power Failure Count

19 Total Power Failure Hours

20 Total Tamper Count

23 Running MD in kW with date & Time

24 Cumulative kWh

25 Cumulative Lag kVArh

26 Cumulative Lead kVArh

27 Cumulative Apparent Energy

28 Cumulative MD in KW

29 Phase wise Voltage Failure Count

30 Current Open Status Count

31 Voltage Unbalance Count

32 Current Unbalance Count

33 Current Bypass Count

34 Current Reversal Count

35 Over Voltage Count

36 Over Current Count

37 Neutral Disturbance Count

38 Magnetic Tamper Count

39 Cover Open Status

40 Date & Time of Cover Open

42 Battery status

43 First Previous Month billing Energy in kWh

44 Second Previous Month billing Energy in kWh

45 Third Previous Month billing Energy in kWh

46 Fourth Previous Month billing Energy in kWh

47 Fifth Previous Month billing Energy in kWh

48 Sixth Previous Month billing Energy in kWh

49 First Previous Month billing MD in kw

50 Second Previous Month billing MD in kW

51 Third Previous Month billing MD in kW

52 Fourth Previous Month billing MD in kW

53 Fifth Previous Month billing MD in kW

54 Sixth Previous Month billing MD in kW

55 First Previous Month billing pf

56 Second Previous Month billing pf

57 Third Previous Month billing pf

58 Fourth Previous Month billing pf

59 Fifth Previous Month billing pf

60 Sixth Previous Month billing pf

61 Zone wise billing C kWh and MD in kw of previous month (b1)

62 Zone wise Cumulative kWh and MD in kw

1 Cumulative kWh, kVArh lag & lead, kVAh

27 Parameters to be displayed on demand

a. High-resolution display of cumulative KWh, KVAh & RKVAH shall be of 6 digits, with 2 digits for integers and 4 digits for decimals.

b. Indication of healthiness of potential

c. Demand with elapsed time

d. KWMD (cumulative parameters of 0-24 hrs register)

28 Overall dimensions

29 Reference standards

30 No. of Digits Displayed

31 Parameters read out by MRI

32 Communication interface available

a. for calibration

b. for data transfer

33 Non volatile memory retention time in absence of power

34 Load survey parameters

a. Daily ½ hr data for the following parameters for the last 35 days

v.Voltage (Avg.30 min. Period) Phase wise.

vi.Current (Avg.30 min. Period) Phase wise.

35 a. Integration period of MD (Minutes)

b. Principle of operation

36 Communication capability for remote reading providing details

37 Max error due to variation in

a. Voltage ± 20% to –40%

b. Frequency +/- 5%

c. Temperature +60 C

d. Basis Current (0.1% to 200%)

e. PF (0.5 lag –UPF –0.8 lead)

38 Power supply back up

a. For taking reading

b. For downloading data

39 Measuring principle employed for

d. Maximum demand parameters

40 Guarantee period offered for

41 Microprocessor

a. Address in bits

b. Sampling in bits

42 Tamper and fraud proof provision for

43 Sealing arrangement provided

b. Meter Terminal block

c. MD reset button

d. Communication Port

44 Details of protection against dust, moisture etc.,

45 battery provided for real time clock

a. Guaranteed life of battery

b. Low battery indication

46 Provision of real time clock.

47 Additional information if any

NAME OF THE FIRM

For “Sale of single phase, three phase whole current and three phase CT operated Static Meters for prospective consumers on rate contract basis in retail outlets and for procurement of meters for arranging power supply to new connections under Janasnehi and for replacement of defective /burnt-out meters on need basis against Purchase orders placed for O&M Divisions in Retail Outlets of BESCOM for a period of one year extendable for another one year or till implementation of Smart meters whichever is earlier”.

Enquiry No : BESCOM/GM (M&C)/124/RO/2023-24

Guaranteed Technical Particulars of LT AC single phase two wire 5-30 Amperes Static energy meters of accuracy class 1.0

Sl. No Particulars CESC Requirement Bidders offer

1 Name and Address of Manufacturer

2 Type/Designation of meter offered

3 Class of Accuracy 1.0

4 Applicable Standards IS 13779/1999(with latest amendments), IEC 62053-21,IEC62056-21, IS 15959 & CBIP Guide No.325:2015 ( as per specifications)

5 Type of Meter(no. of phases and wire/elements) 1- Phase 2- wire

6 Rating and General particulars

i) Reference Voltage 240V (Phase to Neutral)

ii) Basic current(Ib) 5Amps

iii) Maximum current(Imax) 30Amps

iv) Maximum withstand current 150% of Imax

v) Does meter withstand 415 V(between any phase and neutral) Yes/No

vi) Power supply variation -40% to +20%

7 Whether meter is suitable for working with following supply system variation range

i) Specified operating range 0.80 to 1.1 Vref

ii) Limit range of operation 0.60 to 1.2 Vref

iii) Frequency 50Hz ± 5%

iv) Power factor range 0.5 lag- unity- 0.8 lead

v) Ambient temperature range 4° C to 55°C

8 Insulation resistance between

Current and Voltage circuit coupled and all non-current carrying parts connected together (As per IS13779, Between,all the current and voltage circuits as well as the auxiliary circuits whose reference voltage is over 40v connected together) and on the other hand, earth Not less than 5 Mega ohms

9 Min.starting current(in Amps) 02.% Ib

10 Details of meter fixing arrangements:

Is the meter fixing arrangement with the base of meter box is as per the provision of this specification?

11 A) Detail of sealing arrangements:

i) No. of Tamper proof transparent polycarbonate security seals provided on meter body and its colour 2 Nos. of tamper proof Seals

ii) The name/logo of manufacturer and purchaser is printed on the seals?

iii) Is the non-repetitive Sl.No is embossed on the seals?

iv) Size of seals and no. of anchors. 18×14×7mm and 2 nos.

B) Whether base and cover are ultrasonically welded?

C) Whether seals are visible from front side of meter?

12 Details of meter base and cover

a) Degree of protection of meter case. 200 hrs UV test as per ASTMD 53; Glow wire test as per IS 13779 & Heat deflection test as per ISO 75.

Whether Type Test Certificate enclosed?

b) Thickness and material of Meter base and cover Minimum 2.0 +/-0.2mm

c) Material of meter base and cover Unbreakable Flame retardant High grade UV stabilized Poly Carbonate

13 Details of terminal block and its cover

a) Material of terminal block used Phenol formaldehyde / high impact strength UV stabilized Glass filled Poly Carbonate conforming to IS 13779/1999 (latest amendment)

b) Material of Terminal cover Fully transparent, Unbreakable, Flame retardant high grade UV stabilized polycarbonate

c) Minimum center to center distance between adjacent terminals As per Table 4, clause 6.6 of IS 13779.

d) Details of screws provided on each terminal for fixing aluminum stranded wires(no and size) Two screws (Size to be indicated) shall be provided in each incoming and outgoing terminal.

e) Minimum internal diameter of terminal holes Minimum 5.5mm

Is it adequately designed for inserting 16 mm2 stranded aluminium cable?

Whether terminals of suitable rating to carry continuously 150% Imax current and made of electroplated (or tinned) brass are provided. Any other provision which meets this in a better manner/ way should be elaborated.?

f) Whether terminal cover is of extended type ?

g) Whether terminal cover is having hinges as per specification?

h) No. of sealing screws provided for sealing the terminal cover. 1 No

14 Whether voltage and current circuits are solidly connected inside the meter body without any link?

Whether current circuit conductors of the meter connected to its current terminals from inside the meter terminal block adopting procedure prescribed in recommended methods under IS:13779.If not, any other method which meets these requirements in a better manner/way shall also be considered. The bidder should elaborate the arrangement adopted.

15 Whether meter cover and terminal cover is transparent is as per specification?

16 Details of CT's/ Shunts provided Details to be specified

a) CT(s) and / or Shunt(s) provided

b) Size of secondary wire of CT/size of Shunt(s) used

c) No. of turns of secondary winding of CT.

d) CTs and Shunts fixing arrangement. To be specified

17 Whether components on the PCB are surface mounted except power components?

18 Whether PCB material is glassy epoxy FR-4 grade?

19 Whether all parts that are likely to develop corrosion are effectively protected against corrosion?

20 Whether the name plate provided on meter bears all the information required as per technical specification? Clause No. 5.11 of specification

21 Power consumption of voltage circuit (watt and VA) Less than 1.5 W and 8 VA

22 Power consumption of current circuit (VA) Less than 1 VA

23 Overall dimension of the meter with ± % tolerance To be specified

24 Weight of the meter with ± % tolerance To be specified

25 Does meter has short time over current withstand capability of 30 Imax for one half cycle at reference frequency?

26 Does the meter comply with Impulse voltage withstand capacity of 10KV?

27 Does the meter have any type of mechanical adjustments(trim-pots,potentiometer etc) for calibration?

28 Are the meters software calibrated?(yes/No)

29 Since the sequence of the output pulses may not be homogeneous, the bidder shall state the minimum number of pulse counts to ensure measurement accuracy of at least 1/10th of the specified error limits as per class of the meter at various test points.

30 Display parameters

A) Whether following billing parameters are available in auto cyclic display? If yes, please also describe method and time of auto display. To be specified

a. Current date and time

b. Cumulative active energy (KWh)

c. Billing MD (First Previous Month MD in kW with date& Time (b1)).

d. Instantaneous Voltage (Volt)

e. Instantaneous Current (Amp).

f. Instantaneous Power (Watt)

g. Cumulative Tamper Counts (TAMP)

h. Cumulative apparent energy (KVAh)

B) Push Button Mode

a. LCD segment check

b. Meter Sl. no

c. Date and Time(DD/MM/YY,Hrs-Min)

d. Cumulative active energy(KWh)

e. Billing MD (First Previous Month MD in kW with date& Time (b1)).

f. Cumulative Active Energy (kWh) for each calendar month for previous six months history. Maximum demand (in kW) with 30 minutes integration period and maximum of these in a calendar month for previous six months history may be given in separate page.

g. Cumulative Active Energy in High Resolution mode with 3 decimals.

h. Instantaneous Voltage(Volt)

i. Instantaneous phase current (AMP)

j. Instantaneous neutral current (AMP)

k. Instantaneous load in Watt(LOAD)

l. Last magnetic temper occcurance with time and date.

C ) Whether separate page for High resolution mode is provided ? Yes/No.

31 Display details

a) i) Type of Display LCD display (STN/superior Type)

ii) Minimum character height and width Minimum 8mm×5mm

iii) No of.Digits minimum 6 digits (with one decimal digit)

iv) Size of display area Should have wide viewing angle of 45° to 60° cone, upto one meter distance or with superior please mention.

b) Is the display having back lit?

c) Does display have one decimal digit?

d) Is NVM having min. retention time of 10 years provided?

e) Accuracy of RTC ( minutes/year) ±3

f) Internal Least count of energy recording <0.01Kwh

g) Provision to read meter during no power condition is provided? Meter shall be able to display during power outage through the push button provided on the meter

h) Is the provision in the form ofindustrial grade loong life battery?

i) Is the above provision available for design life of the meter?

j) Guarantee on life of batteries provided for RTC and meter reading during power outage. 10 years

32 Communication Capability

a) Whether there is provision of a galvanically isolated optical port in meter?

b) Whether Optical port of the meter has been provided with a suitable covered sealing arrangement.?

c) Whether a internally galvanically isolated RS232 port has been provided and terminated on RJ-11 connector for remote reading through PSTN/optical fiber/GSM/CDMA/PLCC/LPR etc.?

d) Whether RS232 port is provided under terminal cover so that its access can be restricted after sealing the T/C?

31 Whether indications provided for following.

a) LED for test output pulse (Imp/KWh)

b) LCD icon for load earthing

c) LCD icon for current reversal

d) LCD icon for neutral missing

e) LCD icon for magnetic tamper

f) LCD icon for Phase available

g) LCD icon for Meter Cover Open

34 a) Year since when the design offered is in vogue.

b) Whether the offered design is completely type tested and certified by BIS.?

35 a) Whether meter perform within class 1.0 accuracy upto 150%Imax for UPF?

b) Whether meter is capable to record energy even if voltage falls upto 50% of rated voltage and 10% of Ib at UPF?

36 Indicate guranteed accuracy of meters at different ranges of voltages / PF

a Voltage variation between Ib at unity pf: 0.7%

b) 10% of 3rd harmonic in current circuit 0.6Ib at unity pf :0.6%

0.6Imax at unity pf : 0.6%

37 Does the meter comply to running with no load of 70% & 120% of rated voltage - as per this specification?

38 Mention the value up to which meter can withstand Direct current in AC circuit without getting CTs saturated resulting in measurement errors of more than permissible limit 720% of Ib

39 Does meter meets the magnetic Immunity levels of AC and DC magnetic field prescribed in CBIP Guide No. 325 ?

40 Whether meter accuracy or accuracy display under normal conditions is not affected by placement of a permanent magnet of 0.5 tesla ±5% anywhere on the surface of the meter without meter box.?

41 Reversal of Current: Whether correct energy is registered in forward direction irrespective of direction of current in the current coil (i.e. on reversal (interchange) of input (line) and output (load) terminals or phase and neutral intercharge) - the reverse indication in the form of LCD icon shall be switched on.

42 Use of Earthing: Whether meter registers accurately if load is drawn partially or fully through a local earth and the earth indication in the form of LCD icon is switched on. Also, in any combination of load earthing with reversal of current.

43 Does meter record energy as per rated parameters, even when the neutral from incoming and/or outgoing side is disconnected and additional Neutral Missing indication in the form of LCD icon is switched on?

42 Does the meter record energy as per voltage measured between incoming phase and neutral terminals when DC signal is injected on neutral terminal, through diode?

43 Does the bidder own the facilities of SMT manufacturing or have access thru' hire, lease or sub-contract the facilities?

44 Does the meter record energy as per voltage measured between incoming phase and neutral terminals when

a) DC signal is injected on neutral terminal, through diode?

b) Electro magnetic jamming signal injected at outer surface of the meter?

45 Does the bidder own the facilities of SMT manufacturing or have access thru' hire, lease or sub-contract the facilities?

46 Does the bidder have exclusive accesss to these facilities and have furnished adequate documents as proof?

47 Does the bidder have in-house design, development and manufacturing facilities?

48 Does the bidder process Surface Mounted Technology (SMT) facilities (Automatic Pick & Place Machine with in -process reflow heating oven) & computerized Automatic Test Equipment (ATE) ?

49 Does the bidder have dust proof and air-conditioned environment for the complete assembly and testing area of meter manufacturing?

50 Whether sample submitted with the bid are identical with the technical specification of this tender specially in respect of metrological properties, LCD display, impulse voltage withstand capacity of 10KV, anti-tamper and anti-magnetic features, immunity to high voltage/high frequency generating device, conformity in tests as per relevant standard etc should comply with this specification.

51 point wise details of such features/specification, which are not available in their sample.

52 Does the manufactured meter identical in all respect to those offered, have successfully passed all type tests from a recognised testing laboratory?

53 No. of years of supplying 1-ph static energy meters of any current rating(s) to electricity boards/ Power utilities and quantity of such meters supplied so far.

54 Does the bidder possess a valid ISI licence for meters for offered rating?

55 Whether bidder possess all testing facilities to carry out tests ?

56 Does the bidder possess fully automatic computerized meter testing system with printer and static source and duly calibrated Electronic Reference Standard (ERC) meter of class 0.1 accuracy or better?

57 Whether bidder has agreed to the Random Sample Testing and Sample testing before commencement of supply as per tender's specification.

58 Details of tracking and recording software for all new seals shall be provided by the manufacture of the meter so as to track total movement of seals starting from manufacturing, procurement, storage,record keeping,installations, series of inspection, removal and disposal?

59 Way of meter is packing ? Corrugated box/Thermocol packing boxes etc

60 Principle of operation of the meter, outlining the methods and stages of computation of various parameters starting from input voltage and current signals including the sampling rate, if applicable shall be furnished by the bidder.

61 Additional information if any

NAME OF THE FIRM

Bangalore Electricity Supply Company Limited

SCHEDULE - 1 a : QUALIFYING REQUIREMENTS

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

Following is the list of earlier orders executed by us, the details of which are being furnished by us in support of qualifying requirements for above work. We agree to provide all original documents in support of the information provided for verification upon request.

Sl. No. Name of the utility to whom supplies made Purchase order No & Date . ( Note -Copy of PO has to be uploaded ) Type & quantity ordered Type & quantity supplied Date of supply Order completion certificate from utilities Reference Page No in the uploaded tender document Remarks

Note:1. Details of Each type of meters shall be specified. 2. Documentary Proof in support of above shall be uploaded in the form of certificates issued by authorized officers of concerned organisations.

Place Designation

Bangalore Electricity Supply Company Limited

SCHEDULE - 1b : QUALIFYING REQUIREMENTS

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

Following is the list of earlier orders executed by us, the details of which are being furnished by us in support of qualifying requirements for above work. We agree to provide all original documents in support of the information provided for verification upon request.

Sl. No. Name of the utility to whom supplies made Purchase order No & Date. (Note -Copy of PO has to be uploaded ) Type & quantity ordered Type & quantity supplied Date of supply Performance certificate from utility (Proof of satisfactory working of meter for a period of 3 years shall be mentioned) Reference Page No in the uploaded tender document Remarks

Note: 1. Documentary Proof in support of above shall be uploaded in the form of certificates issued by authorized officers of concerned organisations.

2. Performance certificate shall be issued by an officer not below the rank of EE. Failure to furnish the certificates issued and signed by the officer not below the rank of EE will entail rejection of the bid.

3. Details of Each type of meters shall be specified.

Place Designation

Bangalore Electricity Supply Company Limited.

SCHEDULE - 2 : QUALIFYING REQUIREMENTS

Assessment of financial capability of the firm

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

Finance/ Annual turnover Information

SLNo. Particulars Year Amount (Rs) in crores

1 Annual turn over for the last three years 2022-23

2 Whether annual accounts statement are enclosed for the last three years ? (yes/No)

Place Designation

Bangalore Electricity Supply Company Limited

Technical & Commercial deviations

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

I have read each of the Clauses mentioned in NIT, ITB, Conditions of contract and Technical specifications.

The following are the technical & commercial deviations and variations from and exceptions to the Specifications and documents for sale of single phase, three phase whole current and three phase CT operated energy meters, in retail outlets of BESCOM .These deviations and variations matrix shall be supplied as per your specifications and documents.

SL NO SECTION CLAUSE NO. DESCRIPTION AS PER TENDER DOCUMENTS STATEMENT OF DEVIATIONS/ VARIATIONS

Place Designation

Bangalore Electricity Supply Company Limited

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

STATEMENT OF COMMERCIAL TERMS AND CONDITIONS

Sl. No. Particulars Details Reference page No

1 Bid form uploaded. (YES/NO)

2 No deviation certificate uploaded. (YES/NO)

3 EMD declaration uploaded. (YES/NO)

4 Validity of the Bid. (To be quoted)

5 Qualifying Requirements. (Documents uploaded/not uploaded)

6 Financial capability (Documents uploaded/not uploaded)

7 Price Basis. (Accepted/Not accepted)

8 Taxes & Duties Shown seperately (YES/NO)

9 Completion Schedule (Accepted/Not accepted)

10 Two sample meters of each type (Submitted / not submitted)

11 Type test certificates (Uploaded / not uploaded)

12 ISO 9001/9002/14001 certificates (Uploaded/ not uploaded)

13 S mark safety certificate (Uploaded/ not uploaded)

14 Guarantee (Accepted/Not accepted)

15 Payment Terms (Accepted/Not accepted)

16 GTP (Uploaded/ not uploaded)

17 Any others (Pl specify)

Place Designation

Bangalore Electricity Supply Company Limited

Detail of additional informations uploaded

Supply of 50,000 nos. of Single Phase and 5,000 nos. of Three Phase Electrostatic meters & 5,000 Nos Three Phase CT Operated Electrostatic meters to CESC jurisdiction

CESCOM/2026-27/IND0281

BIDDER'S NAME AND ADDRESS: To,

The General Manager, Procurement, Corporate office, CESC, Mysuru.

We have uploaded the following additional information along with our proposal .

Sl. No. Brief description of information Reference Page No

Place Designation

CHAMUNDESHWARI ELECTRICITY SUPPLY CORPORATION LIMITED

For “Sale of single phase, three phase whole current and three phase CT operated Static Meters for prospective consumers on rate contract basis in retail outlets and for procurement of meters for arranging power supply to new connections under Janasnehi and for replacement of defective /burnt-out meters on need basis against Purchase orders placed for O&M Divisions in Retail Outlets of BESCOM for a period of one year extendable for another one year or till implementation of Smart meters whichever is earlier”.

Enquiry No : BESCOM/GM (M&C)/124/RO/2023-24

Guaranteed Technical Particulars of LT Three phase 4 wire Static Energy Meters of Accuracy Class 1.0

Sl.No Particulars CESC Requirement Bidders offer

1 Name and Address of Manufacturer

2 Type/Designation of meter offered

3 Class of Accuracy 1.0

4 Applicable Standards IS 13779/1999(with latest amendments), IEC 62053-21,IEC62056-21, IS 15959 & CBIP Guide No.325:2015 (as per specifications)

5 Type of Meter ( no. of phases and wire / elements ) 3-Phase 4- wire

6 Rating and General particulars

i) Reference Voltage 3 x 240V (Phase to Neutral)

ii) Basic current (Ib) 5 Amps

iii) Maximum current (Imax) 30 Amps

iv) Maximum withstand current 150% of Imax

v) Does meter withstand 415 V (between any phase and neutral)? Yes/No

vi) Power supply variation -40% to +20%

7 Whether meter is suitable for working with following supply system variation range

i) Specified operating range 0.80 to 1.1 Vref

ii) Limit range of operation 0.60 to 1.2 Vref

iii) Frequency 50 Hz ±5%

iv) Power factor range Zero lag - Unity - Zero lead

v) Ambient temperature range 4o to 55oC

8 Insulation resistance between

Current and Voltage circuit coupled and all non-current carrying parts connected together (As per IS 13779, Between, all the current and voltage circuits as well as the auxiliary circuits whose reference voltage is over 40v connected together) and on the other hand, earth Not less than 5 Mega ohms

9 Min. starting current (in Amps) 0.2% Ib

10 Details of meter fixing arrangements:

Is the meter fixing arrangement with the base of meter box is as per the provision of this specification?

11 a) Details of sealing arrangements:

i) No. of Tamper proof transparent polycarbonate security seals provided on meter body and its colour 2 Nos. of tamper proof Seals

ii) The name/logo of manufacturer and purchaser is printed on the seals?

iii) Is the non-repetitive Sl.No embossed on the seals?

iv) Size of seals and no. of anchors. 18x14x7mm and 2 nos.

b) Whether base and cover are ultrasonically welded?

c) Whether seals are visible from front side of meter?

12 Details of meter base and cover

a) Degree of protection of meter case? 200Hrs on UV test as per ASTMD 53; Glow wire test as per IS 13779 & Heat deflection test as per ISO 75.

Whether Type Test Certificate enclosed?

b) Thickness of Meter base and cover Minimum 2.0 +/-0.2mm

c) Material of Meter base and cover Unbreakable Flame retardant High grade UV stabilized Poly Carbonate

13 Details of terminal block and its cover

a) Material of terminal block used Phenol formaldehyde/high impact strength UV stabilized Glass filled Poly Carbonate conforming to IS 13779:1999 (latest amendment)

b) Material of Terminal cover Fully transparent, Unbreakable, Flame retardant high grade UV stabilized polycarbonate

c) Minimum center to center distance between adjacent terminals As per Table 4, clause 6.6 of IS 13779.

d) Details of screws provided on each terminal for fixing aluminum stranded wires(no and size) Two screws (size to be indicated) shall be provided in each incoming & outgoing terminal.

e) Minimum internal diameter of terminal holes minimum 5.5mm

Is it adequately designed for inserting 16 mm2 stranded aluminium cable?

Whether terminals of suitable rating to carry continuously 150% Imax current and made of electroplated (or tinned) brass are provided. Any other provision which meets this in a better manner/way should be elaborated.?

f) Whether terminal cover is of extended type. Please give extended length of terminal cover below terminal block.? To be specified

g) Whether terminal cover is having hinges as per specification?

h) No. of sealing screws provided for sealing the terminal cover. 2 Nos

14 Whether voltage and current circuits are solidly connected inside the meter body without any link?

Whether current circuit conductors of the meter connected to its current terminals from inside the meter terminal block adopting procedure prescribed in recommended methods under IS:13779. If not, any other method which meets these requirements in a better manner/way shall also be considered. The bidder should elaborate the arrangement adopted.

15 Whether meter cover and terminal cover is transparent as per specification?

16 Details of CT's/ Shunts provided Details to be specified

a) CT(s) and / or Shunt (s) provided

b) Size of secondary wire of CT/size of Shunt (s) used

c) No. of turns of secondary winding of CT.

d) Whether CTs and Shunts have been properly fixed on base/PCB/current terminals?

17 Whether components on the PCB are surface mounted except power components?

18 Whether PCB material is glassy epoxy FR-4 grade?

19 Whether all parts that are likely to develop corrosion are effectively protected against corrosion?

20 Whether the name plate provided on meter bears all the information required as per technical specification? Clause No. 5.11 of specification

21 Power consumption of voltage circuit (watt and VA) less than 1.5W and 8 VA per phase

22 Power consumption of current circuit (VA) less than 1 VA per phase

23 Overall dimension of the meter with ± % tolerance

24 Weight of the meter with ± % tolerance

25 Does meter has short time over current withstand capability of 30 Imax for one half cycle at reference frequency?

26 Does the meter comply with Impulse voltage withstand capacity of 10KV?

27 Does the meter have any type of mechanical adjustments (trim-pots, potentiometer etc) for calibration?

28 Are the meters software calibrated? (yes/No)

29 Since the sequence of the output pulses may not be homogeneous, the bidder shall state the minimum number of pulse counts to ensure measurement accuracy of at least 1/10th of the specified error limits as per class of the meter at various test points.

30 Display parameters

A) Whether following billing parameters are available in auto cyclic display? If yes, please also describe method and time of auto display. To be specified

a) LCD Segment Check

b) Sl. No. of meter.

c) Date & Time (Date: DD-MM-YY, Time: Hrs-Min.)

d) Cumulative Active Energy (KWh)

e) Billing MD (First Previous Month MD in kW with date & Time (b1)).

h) Running MD in kW

j) Instantaneous R -Phase voltage in Volts.

k) Instantaneous Y -Phase voltage in Volts.

l) Instantaneous B -Phase voltage in Volts.

m) Instantaneous R-Phase current in Amps.

n) Instantaneous Y-Phase current in Amps.

o) Instantaneous B-Phase current in Amps.

p) Instantaneous three phase PF

q) Instantaneous active power in KW

s) Cumulative tamper counts

t) Billing Power on time.

B) Push Button Mode

a) LCD Segment Check

b) Sl. No. of meter.

c) Date & Time (Date: DD-MM-YY, Time: Hrs-Min.)

d) Cumulative Active Energy (KWh) -TOD provision for 8 zones-Z1 to Z8

e) Billing MD (First Previous Month MD in kW with date& Time (b1)).

f) Billing PF since last reset with date and time

h) Cumulative Reactive Energy (KVArh) Lag

i) Cumulative Reactive Energy (KVArh) Lead

j) Cumulative Apparent Energy (KVAh)

k) Billing Power on time.

l) Running MD in kW

n) Instantaneous R -Phase voltage in Volts.

o) Instantaneous Y -Phase voltage in Volts.

p) Instantaneous B -Phase voltage in Volts.

q) Instantaneous R-Phase current in Amps.

r) Instantaneous Y-Phase current in Amps.

s) Instantaneous B-Phase current in Amps.

t) Instantaneous three phase PF

u) Instantaneous active power in KW

w) Cumulative tamper counts

x) Cumulative active energy in high resolution mode with three decimals i.e 3+3.

y) Cumulative Active Energy (kWh) and PF for each calendar month for previous six months history. Maximum demand (in kW) with 30 minutes integration period and maximum of these in a calendar month for previous six months history may be given in separate page.

z) Last magnetic Tamper Occurrence with date and time

aa) Voltage Failure Count /Current Failure Count phase wise

bb) Magnetic Tamper Count

C ) Whether separate page for High resolution mode is provided ? Yes/No.

D) Whether separate page for details of last 6months history is provided ? Yes/No.

31 Display details

a) i) Type of Display LCD Display (STN/superier Type)

ii) Minimum character height and width Minimum 8mm x 5mm

iii) No of Digits

a)For auto scroll mode Minimum 6 digits (with one decimal digit i.e 5+1)

b) on high resolution mode Minimum 6 digits (with three decimal digit i.e 3+3)

iv) Size of display area Should have wide viewing angle of 45° to 60° cone, upto one meter distance or with superior if any, please mention.

b) Is the display having back lit?

c) Does display have one decimal digit?

d) Is NVM having min. retention time of 10years provided?

e) Accuracy of RTC ( minutes/year) ±3

f) Internal Least count of energy recording <0.01Kwh

g) Provision to read meter during no power condition is provided? Meter shall be able to display during power outage through the push button provided on the meter.

h) Is the provision in the form of industrial grade long life battery?

i) Is the above provision available for design life of the meter?

j) Guarantee on life of batteries provided for RTC and meter reading during power outage. 10 Years

32 TOD Features

a) There shall be provision for atleast 8 TOD Zones for energy and demand.

b) The number and timings of these TOD Zones shall be programmable. Default TOD parameters shall be displayed on the Push button Mode.

33 Load survey data requirement for 45 daysfor every half an hour Date and time, KWH, KVArh(lag), KVARh(lead), KVAh, Current and Voltages (avg of 30 min period) phase wise, of all phases

34 Communication Capability

a) Whether there is provision of a galvanically isolated optical port in meter?

b) Whether Optical port of the meter has been provided with a suitable covered sealing arrangement.?

c) Whether a internally galvanically isolated RS232 port has been provided and terminatd on RJ-11 connector for remote reading through PSTN/optical fiber/GSM/CDMA/GPRS/PLCC/LPR etc.?

d) Whether RS232 port is provided under terminal cover so that its access can be restricted after sealing the T/C?

35 Whether indications provided for following.

a) LED for test output pulse (Imp/KWh)

b) LED for test output pulse (Imp/KVArh)

c) LCD icon for current reversal

d) LCD icon for magnetic tamper

e) LCD icon for Phases available

f) LCD icon for Meter cover open

36 a) Year since when the design offered is in vogue.

b) Whether the offered design is completely type tested and certified by BIS?

37 a) Whether meter perform within class 1.0 accuracy upto 150% Imax for UPF?

b) Whether meter is capable to record energy even if voltage falls upto 50% of rated voltage and 10% of Ib at UPF?

38 Indicate guranteed accuracy of meters at different ranges of voltages / PF

a Voltage variation between Ib at unity pf: 0.7%

b) 10% of 3rd harmonic in current circuit 0.6Ib at unity pf : 0.6%

0.6Imax at unity pf : 0.6%

39 Does the meter comply to running with no load of 70% & 120% of rated voltage - as per this specification?

40 Mention the value up to which meter can withstand direct current in AC circuit without getting CTs saturated and records energy accurately. 720% of Ib

41 Does meter meets the magnetic Immunity levels of AC and DC magnetic field prescribed in CBIP Guide No. 325 ?

42 Whether meter accuracy or accuracy display under normal conditions is not affected by placement of a permanent magnet of 0.5 tesla ±5% anywhere on the surface of the meter without meter box.?

43 The meter should register energy consumption accurately in forward direction irrespective of direction of current in the current coil (i.e. on reversal (interchange) of input (line) and output (load) terminals ) - the reverse indication in the form of LCD icon shall be switched on.

44 Does the meter record energy as per voltage measured between incoming phase and neutral terminals when

a) DC signal is injected on neutral terminal, through diode?

b) Electro magnetic jamming signal injected at outer surface of the meter?

45 Does the bidder own the facilities of SMT manufacturing or have access thru' hire, lease or sub-contract the facilities?

46 Does the bidders have exclusive access to these facilities and have furnished adequate documents as proof?

47 Does the bidder have in-house design, development and manufacturing facilities?

48 Does the bidder possess Surface Mounted Technology (SMT) facilities (Automic Pick & Place Machine with in-process reflow heating oven) & computerized Automatic Test Equipment (ATE)?

49 Does the bidder have dust proof and air- conditioned environment for the complete assembly and testing area of meter manufacturing?

50 Whether sample submitted with the bid are identical with the technical specification of this tender specially in respect of metrological properties, LCD display, impulse voltage withstand capacity of 10KV, anti-tamper and anti-magnetic features, immunity to high voltage/high frequency generating device, conformity in tests as per relevant standard etc should comply with this specification.

point wise details of such features/specification, which are not available in their sample.

51 Does the manufactured meter identical in all respect to those offered, have successfully passed all type tests from a recognised testing laboratory?

52 No. of years of supplying three phase static energy meters of any current rating(s) to electricity boards/ Power utilities and quantity of such meters supplied so far.

53 Does the bidder possess a valid ISI licence for meters for offered rating?

54 Whether bidder possess all testing facilities to carry out tests ?

55 Does the bidder possess fully automatic computerized meter testing system with printer and static source and duly calibrated Electronic Reference Standard (ERC) meter of class 0.1 accuracy or better?

56 Whether bidder has agreed to the Random Sample Testing and Sample testing before commencement of supply as per tender's specification.

57 Details of tracking and recording software for all new seals shall be provided by the manufacture of the meter so as to track total movement of seals starting from manufacturing, procurement, storage,record keeping,installations, series of inspection, removal and disposal?

58 Way of meter packing ? Corrugated box/Thermocol packing boxes etc

59 Principle of operation of the meter, outlining the methods and stages of computation of various parameters starting from input voltage and current signals including the sampling rate, if applicable shall be furnished by the bidder.

60 Additional information if any

NAME OF THE FIRM