TECHNICAL SPECIFICATION FOR
LT SINGLE PHASE STATIC ENERGY METER
Following is the Technical Specification for LT SINGLE PHASE STATIC ENERGY METER FOR 5-30 AMP AND 10-60 AMP against Tender No. SP/T-1004/0405.
For any queries contact:
The Chief Engineer (Distribution)
Maharashtra State Electricity Board (MSEB),
4th Floor, 'Prakashgad',
Station Road, Bandra (E),
Mumbai 400 051
Ph: 26474211, 26478252 (P)
FAX: 26472937
MAHARASHTRA STATE ELECTRICITY BOARD
TECHNICAL SPECIFICATION FOR
LT SINGLE PHASE STATIC ENERGY METER
SPEC NO:- DIST.(02/2005)-02
INDEX
CLAUSE NO. CONTENTS Page No
1. SCOPE 2
2. SERVICE CONDITIONS 2
3 APPLICABLE STANDARDS 2
4 CONSTRUCTION 3
5 TOD FACILITY 5
6. ANTITAMPER FEATURES 5
7. EVENTS RECORD 6
8. DISPLAY OF MEASURED VALUES 6
9 DEMONSTRATION 7
10 CONNECTION DIAGRAM & TERMINAL MARKING 7
11 NAME PLATE & MARKING 7
12. TESTS 7
13. GUARANTEE 10
14. PACKING 10
15. TENDER SAMPLE 10
16. QUALITY CONTROL 11
17. MINIMUM TESTING FACILITIES 11
18. MANUFACTURING ACTIVITIES 11
19. QUALITY ASSURANCE PLAN 12
20 COMPONENT SPECIFICATION 12
21 PREBID MEETING 12
22 SCHEDULE 12
SCHEDULE A-1 14
SCHEDULE A-2 16
SCHEDULE B 18
SCHEDULE C 19
SCHEDULE D 20
SCHEDULE E 21
ANNEXURE-I & II 22 to 24
Maharashtra State Electricity Board
Technical Specification for LT Single Phase Static Energy Meters
Specification No. DIST: 02/2005/02
1. SCOPE:
This specification covers the Design, Manufacture, Testing and Supply of ISI marked LTAC Static LCD Energy Meters suitable for measurement of Energy (KWh) and Demand (kWMD) in Single Phase, Two wire system of LT Consumers.
The original manufacturer of LT AC Static Energy Meters shall only quote against this tender. In case of Foreign Manufacturer, the authorised Agents /Traders/Distributors may also bid provided that they have all the testing facilities in India and meters bear ISI mark.
2.0. SERVICE CONDITIONS
The meters to be supplied against this specification shall be suitable for satisfactory continuous operation under the following tropical conditions:
Maximum ambient temperature (oC) 55
Maximum ambient temperature in shade (oC) 45
Maximum temperature of air in shade (oC) 35
Maximum daily average temperature (oC) 40
Maximum yearly weighted average temperature (oC) 32
Relative Humidity (%) 10 to 95
Maximum Annual rainfall (mm) 1450
Maximum wind pressure (Kg/mm2) 150
Maximum altitude above mean sea level (meters) 1000
Isoceraunic level (days / year) 50
Seismic level (Horizontal acceleration) 0.3g
Climate:- Moderately hot and humid tropical climate
Conducive to rust and fungus growth
3.0 APPLICABLE STANDARD
3.1 The Meters shall conform to IS 13779/1999 (amended up to date) and other relevant IS specifications including CBIP Tech-report-88 amended up to date. The specification given in this document supersedes the relevant clauses of IS:13779/1999 (amended up to date) wherever applicable.
> The meter shall bear ISI mark.
> The class of accuracy of the Energy Meter shall be 1.0. The accuracy shall not drift with time.
3.2 Current & Voltage Rating
> The current rating shall be (a) 5-30A and (b) 10-60A.
Rated basic current (Ib) for L.T. Energy Meters shall be (a) 5A and (b) 10A respectively.
> The maximum continuous current (Imax) shall be 600% of rated basic current. The meters shall work accurately at 150% of Imax.
> The Voltage Rating shall be 240 volts. The voltage range shall be (-) 40% to (+) 20% of rated voltage i.e. 144 Volts to 288 Volts.
3.3 Temperature
The standard reference temperature for performance shall be 27oC. The mean temperature co-efficient should not exceed 0.07%. Temperature rise shall be as per IS 13779/1999 (amended up to date).
3.4 Power Factor : The meter should work for Zero to unity PF ( All lag or lead).
3.5 Power Consumption
> Voltage Circuit : The active & apparent power consumption in each voltage circuit including power supply of meter at reference voltage, reference temperature & frequency shall not exceed 1.0 Watt & 4.0 VA.
> Current Circuit:- The apparent power taken by current circuit at basic current, reference frequency & reference temperature shall not exceed 1.0 VA.
3.6 Starting Current :- The meter should start registering the energy at 0.2 % of basic current (Ib).
3.7 Frequency : The rated frequency shall be 50 Hz with a tolerance of ± 5%.
4.0 CONSTRUCTION
4.1 The meter shall be projection type and dust and moisture proof. The meter base & cover shall be made out of either metal or unbreakable, high grade, fire resistant, reinforced Polycarbonate material so as to give it tough and non-breakable qualities. The meter body shall be type tested for IP51 degree of protection as per IS 12063 against ingress of dust, moisture & vermin.
4. 2 Standard terminal block as per IS: 13779/1999 (amended up to date) shall be provided.
Moulded terminal block for current and voltage connections conforming to relevant standard to meet the requirement of terminal connection arrangement shall be provided. The termination arrangement shall be provided with a transparent terminal cover and shall be sealable independently to prevent unauthorized tampering.
4.3 All insulating materials used in the construction of the meter shall be substantially non-hygroscopic, non ageing and of tested quality.
4.4 All parts that are likely to develop corrosion under normal working condition shall be effectively protected against corrosion by suitable method to achieve durable results.
4.5 The meters having Polycarbonate- base and cover shall be ultra-sonically welded so that once the meter is manufactured and tested at factory, it should not be possible to open the cover at site except the terminal cover. The thickness of material for meter body should be 2mm minimum for polycarbonate material and of 20 gauges for metal sheet. Similarly, the meters having Metal base and cover shall be mechanically fixed / riveted / welded to base such that it should not be possible to open at site.
4.6 The real time quartz clock shall only be used in the meter for maintaining time (IST) and calendar. The clock shall be factory calibrated. The clock accuracy shall not vary more than ±3 min per year and it will be temperature compensated from 0oC to 50oC.
4.7 The provision shall be made on the Meter for at least two seals to be put by utility user.
4.8 The Push button shall be provided for high resolution reading of display, as brought out elsewhere in this specification.
4.9 The meter shall be provided with flashing LED to represent the pulse output for testing the meter by suitable testing equipment. The operation indicator must be visible from the front.
4.10 It shall be possible to check the accuracy of active energy measurement of the meter in the field by means of LED output. Resolution of the test shall be sufficient to enable the starting current test in less than 10 minutes and accuracy test at the lowest load shall be completed with desired accuracy within 5 minutes
4.11 The meter accuracy shall not be affected by AC/DC magnetic field of 0.2T on all the sides of meter i.e. front, sides, top and bottom of the meter as per CBIP-88 Technical Report. Moreover meter working shall not be affected by permanent magnet of 0.5 T of minimum size 70x70x50 mm.
4.12 CTs in the meter are to be provided with proper magnetic shielding.
4.13 The meter shall also be capable to withstand phase to phase voltage (440V) if applied between phase to neutral for minimum 5 min.
4.14 In meter, power supply unit should be micro control type instead of control transformer type to avoid magnetic influence.
4.15 The RTC battery & the battery for display in case of power failure should be separate.
4.16 Display parameters in the meter should not be accessible for reprogramming at site.
4.17 Complete metering system & measurement shall not be affected by the external electromagnetic interference such as electrical discharge of cables and capacitors, harmonics, electrostatic discharges, external magnetic fields and DC current in AC supply etc. The Meter shall meet the requirement of CBIP Tech-report 88 (amended up to - date).
4.18 The measurement by meter shall not get influenced by injection of AC voltage / chopped signal / DC signal and harmonics on the terminals of the meter.
4.19 The meter should have facility for data retrieval through optical port using CMRI or Laptop PC. Sealing arrangement for Optical port shall be provided.
4.20 The meter shall record and display total energy including Harmonic energy.
4.21 Self Diagnostic Features.
The meter shall keep log in its memory for unsatisfactory / nonfunctioning of the following-
a) Real time clock (RTC) Battery :- Unsatisfactory functioning of Real Time Clock battery shall be recorded and indicated in reading file at base computer software end.
b) All display segments :"LED/LCD Test" display shall be provided for this purpose.
4.22 The meter shall have facility to read the display parameters during Power supply failure. A maintenance free battery of long life (10years) shall be provided for the same. A suitable Push Button arrangement for activation of battery shall be made. Backlit for LCD is required in this mode. The sealing arrangement shall be provided for push button. This battery may be of external type with inductive coupling arrangement. External Battery is to be provided with inbuilt charger. External Battery pack shall be supplied in the ratio of one battery pack per 250 nos. of meters.
5.0 TOD FACILITY
There shall be provision for at least 6 (Six) TOD time zones for energy and demand. The number and timings of these TOD time Zones shall be programmable through CMRI with proper security.
6.0 ANTI TAMPER FEATURES
The meter accuracy shall not be affected in case of tamper condition. The meter shall detect and register correctly the energy only in forward direction under any or all following tamper conditions:
6.1 Reversal of phase or neutral.
6.2 Reversal of line and load terminals.
6.3 Load through local Earth.
6.4 The meter should work accurately without earth.
6.5 Where neutral is disconnected from the load or from the supply side or both the load and supply side, the meter should record the energy proportionate to the current drawn through the meter. This shall compute energy using rated voltage, The potential link shall not be provided on terminal block outside the main meter cover. It should be provided on the main body, inside the meter cover.
6.6 Visual indication shall be provided to show tamper condition stated above.
6.7 If the magnetic field is more than 0.2Tesla then the same should be recorded as magnetic tamper event with date & time stamping and the meter should record Energy considering the maximum value of current (Imax) at reference voltage and unity Power Factor.
7.0 EVENT RECORD
The meter should have features to detect the occurrence and restoration of the magnetic influence more than 0.2T with date & time stamping & shall be available on demand. Last twenty events shall be available on First came first out basis.
8.0 DISPLAY OF MEASURED VALUES
8.1 The display shall be permanently backlit LCD. The display shall be minimum full 5 digits. The size of digit should be minimum 8X5 mm. The decimal units shall not be displayed for Cumulative kWh in auto scroll mode. However it shall be displayed in push button mode for high resolution display for testing
8.2 Measuring Parameters
1) Real time & date
2) Instantaneous voltage
3) Instantaneous current
4) Instantaneous active load in watt
5) Active Energy
6) Maximum demand with date & time
> On auto scrolling mode following parameters should be scrolled.
* Active cumulative energy – with date and time ( 20 sec display)
* Max demand (KW) of the completed month with date and time ( 6 sec display)
* Instantaneous active load in watt (6 sec display)
> On demand through PUSH BUTTON (each display for about 6 sec)
* LCD check
* Active cumulative energy with decimal digit
* Instantaneous voltage (accuracy ±1%)
* Instantaneous Current (accuracy ±1%)
* Cumulative Active Energy (KWh) for each calendar month for previous six months.
* Maximum demand (KW MD)in a calendar month for previous six months with date & time.
> Besides the above, it should be possible to also download the following data through optical port.
* Cumulative Active Energy during each time zone (KWh) for each calendar month for previous six months.
* Maximum demand in kW in a calendar month during each time zone for each calendar month for previous six months.
The meter should have a nonvolatile memory, so that the registered parameters will not be affected by the loss of power.
8.3 The maximum demand shall automatically be reset at 2400 hours of the last day of each calendar month. No reset push button shall be provided
8.4 Maximum Demand Integration Period:-Integration period for KWMD should be of 30 minutes real time based. However the same shall be programmable through CMRI or Laptop for 15 minutes if required.
9. DEMONSTRATION
The purchaser reserves the right to ask for the demonstration of the equipment offered at the purchaser’s place.
10.0. CONECTION DIGRAM AND TERMINAL MARKINGS.
The connection diagram of the meter shall be clearly shown on inside portion of the terminal cover and shall be of permanent nature. Meter terminals shall also be marked and this marking should appear in the above diagram.
11.0 NAME PLATE AND MARKING
Meter shall have a name plate clearly visible, effectively secured against removal and indelibly and distinctly marked with all essential particulars as per relevant standards. The manufacturer’s meter constant shall be marked on the Name Plate.
In addition to the requirement as per IS following shall be marked on the Name Plate.
Purchase Order No.
Month and Year of manufacture
Name of purchaser i.e. MSEB
Guarantee Five Years
ISI mark
The meter Serial No. shall be Bar Coded alongwith numeric No. The size of Bar Code shall not be more than 35X5 mm..
12.0 TESTS
12.1 Type Tests
Meter shall be fully type tested as per IS 13779/1999 (amended up to date) and external AC/DC magnetic influence tests as per CBIP Tech-Report 88 with latest amendments. The Type Test Reports shall clearly indicate the constructional features of the type tested meters. Separate Type Test Reports for each offered type of meters shall be submitted. All the Type Tests shall be carried out from Laboratories which are accredited by the National Board of Testing and Calibration Laboratories (NABL) of Govt. of India such as CPRI, Bangalore / Bhopal, ERDA Baroda, to prove that the meters meet the requirements of the specification. Type Test Reports conducted in manufacturers own laboratory and certified by testing institute shall not be acceptable. The tenderer should also furnish the particulars giving specific required details of Meters in schedule `A’ attached. The offers without the details in Schedule ‘A’ stand rejected.
Type test reports should be submitted along with offer. The type test report of meter having identical constructional and other features carried out during last three years will be valid. The purchaser reserves the right to demand repetition of some or all the type tests in presence of purchaser’s representative at purchaser’s cost.
12.2 Meters shall pass all the acceptance and routine tests as laid down in IS: 13779/1999(amended up to date) and also additional acceptance tests as prescribed in this specification.
12.3 Additional Acceptance Tests:
The following additional tests shall be carried out in addition to the acceptance tests specified in IS 13779/1999(amended up to date)
12.3.a) Transportation Test:
At least 50% of the samples of the meters be tested for error at Imax, Ib and 5% Ib at unity power factor and 50% Imax and 10% Ib at 0.5 Power Factor besides checking them for starting current. The meter should be tested with meter cover duly tightened and sealed properly. After recording these errors, the meters be put in their normal packing and transported for at least 50 km in any transport vehicle such as pick up van, Jeep, etc. on uneven rural roads and then re-tested at all these loads after the transportation. The variation in errors recorded before and after transportation should not exceed 1% at higher loads and 1.5% at low loads.
12.3b) Other Acceptance Tests
i) The meter shall withstand continuously for a period of at least 5 minutes at a voltage of 440 V between phase and neutral without damage/problems,
ii) Tamper conditions as stated in this specification,
iii) Glow wire testing for polycarbonate body,
iv) Power consumption tests,
v) The meter shall comply all the test for external AC/DC magnetic field as per CBIP Tech Report 88 with latest amendments. Moreover, the magnetic influence test for permanent magnet of 0.5 T for minimum period of 15 minutes shall be carried out. After removal of magnet, meter shall be subjected to accuracy test as per IS 13779/1999 (amended up to date).
vi) The meter shall withstand impulse voltage at 10kV.
The test 12.3(b) (i) to (iv) shall be carried out at factory for each inspected lot at the time of pre-despatch inspection. The tests 12.3 b) (v) & (vi) shall be carried out on one sample from first lot as per procedure laid down in IS13779/1999(amended up to date) and CBIP Tech-Report 88 in NABL LAB. The test report shall be got approved from CE (Dist.) before commencement of supply.
12.3c) Limits of error
Limits of variation in percentage error due to change in voltage shall not exceed the values given in the following table:
| |
Influence quantities |
Value of current |
Power factor |
Limits of variation in % error for class 1 meters |
a) |
Voltage variation
– 15% to +10% |
Ib
Ib |
1
0.5 lag |
0.7
1.0 |
b) |
Voltage variation between – 40% and – 15% and + 10% and + 20% |
Ib
Ib |
1
0.5 lag |
1.1
1.5 |
ii) The meters shall be tested at (-) 15% and at (-) 40% of reference voltage as well as (+) 10% and (+) 20% of reference voltage and shall record energy within limits of variation indicated above. However the meter shall continue to register energy up to 50% of the rated voltage.
iii) For other influence quantities like frequency variation the limits of variation in percentage error will be as per IS:13779/1999 (amended up to date).
12.4 PRE DESPATCH INSPECTION
All Acceptance tests and Inspection shall be carried out at the place of manufacturer unless otherwise specially agreed upon by the manufacturer and purchaser at the time of purchase. The manufacturer shall offer to the inspector representing the purchaser, all the reasonable facilities, free of charge, for inspection and testing, to satisfy him that the material is being supplied in accordance with this specification. The Board’s representative / Engineer attending the above testing will carry out testing on suitable number of meters as per sampling procedure laid down in IS 13779/1999 (amended up to date) and additional acceptance test as per this specification and issue test certificate approval to the manufacturer and give clearance for despatch. The meters shall be sealed after inspection at works.
The first lot of meter may be jointly inspected by the representative of the Chief Engineer (Distribution) and the Executive Engineer (INSPECTION WING).
12.5 INSPECTION AFTER RECEIPT AT STORES
(Random Sample Testing)
From each lot ( lot means the total number of meters received in a Store out of inspected and approved lot by E.E. (IW) or purchaser’s representative under one approval letter) of meters received at Stores, sample meters shall be drawn as per Appendix ‘C’ of IS 13779/1999 (amended up to date) (meters received in damage condition shall not be selected as samples) tested by our Testing Engineer in presence of supplier’s representative jointly for (i) starting current (ii) Limits of error, (iii) Repeatability of error as IS 13779/1999 (amended up to date).
The 15 days advance intimation will be given to the supplier and if the supplier fails to attend the joint inspection on the date informed, the testing will be carried out by our testing Engineer in absence of supplier’s representative. If the meters failed in above random sample testing, the lot will be rejected.
13.0 GUARANTEE
The meter shall be guaranteed for the period of five years from the date of commissioning or five and half year from the date of despatch whichever is earlier. The meter found defective within above guarantee period shall be replaced by the supplier free of cost, within one month of receipt of intimation. If defective meters are not replaced within the specified period as above, the Board shall recover an equivalent amount plus 15% supervision charges from any of the bills of the supplier.
14.0 PACKING
14.1. The meters shall be suitably packed in order to avoid damage during transit or handling. Each meter may be suitably packed in the first instance to prevent ingress of moisture and dust and then placed in a cushioned carton of a suitable material to prevent damage due to shocks during transit. The lid of the carton may be suitably sealed. A suitable number of sealed cartons may be packed in a case of adequate strength with extra cushioning. The cases may then be properly sealed against accidental opening in transit. The packing cases may be marked to indicate the fragile nature of the contents.
14.2. The following information shall be furnished with the consignment:
> Name of the consignee
> Details of consignment
> Destination
>Total weight of the consignment
>Sign showing upper / lower side of the crate
>Sign showing fragility of the material
>Handling and unpacking instructions
>Bill of Material indicating contents of each package and spare material
15.0. TENDER SAMPLE
Tenderers are required to submit 2 nos. of sample meters of each type along with the offer for evaluation. The samples shall be clearly marked with type and name of the bidder.
16.0 QUALITY CONTROL
The purchaser has a right to send a team of experienced engineers for assessing the capability of the firm for manufacturing and testing of meters as per this specification. The team should be given all assistance and cooperation for inspection and testing at the bidder’s works.
17.0 MINIMUM TESTING FACILITIES
Manufacturer should posses fully computerized Meter Test Bench System for carrying out routine and acceptance Tests as per IS 13779/1999 (amended up to date). Test Reports for each and every meter shall be generated. The list of testing equipments shall be enclosed.
The manufacturer should have the necessary minimum testing facilities for carrying out the following tests:
Insulation resistance measurement
No load condition
Starting current test
Accuracy requirement
Power consumption
Repeatability of error
Transportation test – as per MSEB specification
Tamper conditions - as per MSEB specification.
The manufacturer should have duly calibrated RSS meter of class 0.1 or better accuracy. The bidder should have fully automatic Test Bench having in-built constant voltage, current and frequency source with facility to select various loads automatically and print the errors directly.
18.0 MANUFACTURING ACTIVITIES
The manufacturer shall submit the list of plant and machinery along with the offer.
i) Meter should be manufactured using SMT (Surface Mount Technology) 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, documentary proof shall be attached with the offer) of above facilities.
ii) Quality should be ensured at the following stages:
> At PCB manufacturing stage, each Board shall be subjected to computerized bare board testing.
> At insertion stage, all components should undergo computerized testing for conforming to design parameters and orientation
> Complete assembled and soldered PCB should undergo functional testing using Automatic Test Equipments (ATEs).
> Prior to final testing and calibration, all meters shall be subjected to aging test (i.e. Meters will be kept in heating chamber for 72 hours at 55 OC temperature at full load current. After 72 hours, meters should work satisfactory) to eliminate infant mortality.
(iii) The calibration of meters shall be done in-house.
(iv) The bidders should submit the list of all ( imported as well as indigenous) components to be used in meter, separately along with the offer.
(v) Bought out items
A detailed list of bought out items which are used in the manufacturing of the meter, should be furnished indicating the name of firms from whom these items are procured. The bidder shall also give the details of quality assurance procedures followed by him in respect of the bought out items.
19.0 QUALITY ASSURANCE PLAN
19.1 The tenderer shall invariably furnish QAP as specified in Annexure-I along with his offer the QAP adopted by him in the process of manufacturing.
19.2 Precautions taken for ensuring usage of quality raw material and sub component shall be stated in QAP.
20.0 The COMPONENT SPECIFICATION as per Annexure -II enclosed..
21.0 The Bidder can attend Pre Bid Conference for any queries regarding Technical Specification. The date & time will be separately informed. The queries will be replied in the conference only. Afterwards no oral/written communication will be entertained.
22.0 SCHEDULES:-
The tenderer shall fill in the following schedules andf submit alongwith the offer. If the schedules are not submitted duly filled in with the offer, the offer shall be rejected.
Schedule `A' ... Guaranteed Technical particulars.
Schedule `B' ... Schedule of Deviations
Schedule `C' ... Tenderer's Experience
Schedule `D' ... Schedule of deviations from specified standards.
Schedule `E' ... Deviations from specified test requirements
All deviations from the specification shall be brought out in the schedules of deviations (Schedules `B', `D' & `E'). The discrepancies if any between the specification and the catalogs and/or literatures submitted as part of the offer by the bidders, the same shall not be considered and representations in this regard will not be entertained.
If it is observed that there are deviations in the offer in Guaranteed Technical Particulars other than those specified in the deviation schedules then such deviations shall be treated as deviations.
SCHEDULE -` A-1'
GUARANTEED TECHNICAL PARTICULARS FOR LT AC STATIC
SINGLE PHASE ENERGY (kWh) METERS. ( 5-30 A)
1 MAKE & TYPE.
2 APPLICABLE STANDARD.
3 ACCURACY CLASS:
RATING:
I) RATED VOLTAGE.
II) RATED BASIC CURRENT.
III) MAXIMUM CONTINUOUS CURRENT.
IV) STARTING CURRENT.
V) SHORT TIME OVER CURRENT.
5 WHETHER BACKLIT LCD TYPE
DISPLAY IS PROVIDED (Yes/No)
6 NUMBER OF DIGITS PROVIDED.
7 SIZE OF DIGITS.
8 POWER CONSUMPTION.
9 WHETHER KW MD PROVIDED.
10 INTEGRATION PERIOD OF MD.
11 WHETHER OPTICAL PORT IS PROVIDED
12 MATERIAL OF BASE AND COVER. i) Metal
ii) Polycarbonate
13 WHETHER ALL ANTI-TAMPER FEATURES AS PER
CLAUSE 6.0 PROVIDED (YES/NO)
14 i) WHETHER EXTERNAL BATTERY/INTERNAL BATTERY WITH ACTIVATION PUSH BUTTON PROVIDED (YES/NO)
ii ) IN CASE OF EXTERNAL BATTERY ONE BATTERY SET SHALL BE PROVIDED PER 250 NOS OF METERS (Yes /No)
15 WHETHER TERMINAL BLOCK COVER PROVIDED WITH
SEALING ARRANGEMENT (YES/NO)
16 GUARANTEE OF METERS.
17 WHETHER FOLLOWING IN HOUSE TESTING FACILITIES
ARE AVAILABLE (YES/NO)
i) Insulation Resistance measurement.
ii) No load condition.
iii) Starting current test.
iv) Accuracy requirement.
v) Power consumption.
vi) Repeatability of error.
vii) Transportation test-As per MSEB specification
viii) Tamper conditions - -as per MSEB., specification.
ix) The manufacturer should have duly calibrated standard meter of class 0.1 accuracy.
xi) Heating chamber.
18 Furnish principle of operation of meter outlining the methods and stages of computations of various parameters starting from input voltage and current signals including sampling rate if applicable.
19 Furnish the method adopted to transform the voltage and current to desired low values with explanation on devices used such as CT , VT, potential divider or any other means.
20 WHETHER MANUFACTURING ACTIVITIES ARE AVAILABLE
AS PER CLAUSE 18.0 (YES/NO)
21 WHETHER TYPE TESTED (YES/NO) IF YES
TYPE TEST REPORT NO.
22 WHETHER QAP SUBMITTED AS PER ANNEXURE-I
SEAL & SIGNATURE OF THE TENDERER
SCHEDULE -` A-2'
GUARANTEED TECHNICAL PARTICULARS FOR LT AC STATIC
SINGLE PHASE ENERGY (kWh) METERS. ( 10-60 A)
1 MAKE & TYPE.
2 APPLICABLE STANDARD.
3 ACCURACY CLASS:
RATING:
I) RATED VOLTAGE.
II) RATED BASIC CURRENT.
III) MAXIMUM CONTINUOUS CURRENT.
IV) STARTING CURRENT.
V) SHORT TIME OVER CURRENT.
5 WHETHER BACKLIT LCD TYPE
DISPLAY IS PROVIDED (Yes/No)
6 NUMBER OF DIGITS PROVIDED.
7 SIZE OF DIGITS.
8 POWER CONSUMPTION.
9 WHETHER KW MD PROVIDED.
10 INTEGRATION PERIOD OF MD.
11 WHETHER OPTICAL PORT IS PROVIDED
12 MATERIAL OF BASE AND COVER. i) Metal
ii) Polycarbonate
13 WHETHER ALL ANTI-TAMPER FEATURES AS PER CLAUSE 6.0 PROVIDED (YES/NO)
15 i) WHETHER EXTERNAL BATTERY/INTERNAL BATTERY WITH ACTIVATION PUSH BUTTON PROVIDED (YES/NO)
ii ) IN CASE OF EXTERNAL BATTERY ONE BATTERY SET SHALL BE PROVIDED PER 250 NOS OF METERS (Yes /No)
15 WHETHER TERMINAL BLOCK COVER PROVIDED WITH
SEALING ARRANGEMENT (YES/NO)
16 GUARANTEE OF METERS.
17 WHETHER FOLLOWING IN HOUSE TESTING FACILITIES
ARE AVAILABLE (YES/NO)
i) Insulation Resistance measurement.
ii) No load condition.
iii) Starting current test.
iv) Accuracy requirement.
v) Power consumption.
vi) Repeatability of error.
vii) Transportation test-As per MSEB specification
viii) Tamper conditions - -as per MSEB., specification.
ix) The manufacturer should have duly calibrated standard meter of class 0.1 accuracy.
xi) Heating chamber.
18 Furnish principle of operation of meter outlining the methods and stages of computations of various parameters starting from input voltage and current signals including sampling rate if applicable.
19 Furnish the method adopted to transform the voltage and current to desired low values with explanation on devices used such as CT , VT, potential divider or any other means.
20 WHETHER MANUFACTURING ACTIVITIES ARE AVAILABLE
AS PER CLAUSE 18.0 (YES/NO)
21 WHETHER TYPE TESTED (YES/NO) IF YES
TYPE TEST REPORT NO.
22 WHETHER QAP SUBMITTED AS PER ANNEXURE-I
SEAL & SIGNATURE OF THE TENDERER
SCHEDULE - B
DEVIATIONS FROM SPECIFICATION
R.NO. CLAUSE NO. DETAILS OF DEVIATION
NAME OF FIRM _______________________________________
NAME & SIGNATURE OF TENDERER_________________
DESIGNATION ________________________________________
DATE _______________________________________________
SCHEDULE - "C"
TENDERER'S EXPERIENCE
SR.NO. CLAUSE NO. DETAILS OF DEVIATION
NAME OF FIRM _______________________________________
NAME & SIGNATURE OF TENDERER_________________
DESIGNATION ________________________________________
DATE _______________________________________________
SCHEDULE - " D''
DEVIATIONS FROM SPECIFIED STANDARDS.
SR.NO. CLAUSE NO. DETAILS OF DEVIATION
NAME OF FIRM _______________________________________
NAME & SIGNATURE OF TENDERER_________________
DESIGNATION ________________________________________
DATE _______________________________________________
SCHEDULE - "E"
DEVIATIONS FROM SPECIFIED TEST REQUIREMENT
SR.NO. CLAUSE NO. DETAILS OF DEVIATION
NAME OF FIRM _______________________________________
NAME & SIGNATURE OF TENDERER_________________
DESIGNATION ________________________________________
DATE _______________________________________________
ANNEXURE I
Quality Assurance Plan :
A) The bidder shall invariably furnish the following information alongwith his bid, failing which his bid shall be liable for rejection. Information shall be separately given for individual type of material offered.
i) Statement giving list of important raw materials, names of sub- suppliers for the raw materials, list of standards according to which the raw materials are tested. List of test normally carried out on raw materials in presence of Bidder's representative, copies of test certificates :
ii) Information and copies of test certificates as in (i) above in respect of bought out accessories.
iii) List of manufacturing facilities available.
iv) Level of automation achieved and list of areas where manual processing exists.
v) List of areas in manufacturing process, where stage inspections are normally carried out for quality control and details of such tests and inspections.
vi) List of testing equipment available with the bidder for final testing of equipment specified and test plan limitation. If any, vis-a-vis the type, special acceptance and routine tests specified in the relevant standards. These limitation shall be very clearly bought out in schedule of deviation from specified test requirements.
B) The successful bidder shall within 30 days of placement of order, submit following information to the purchaser.
i) List of raw materials as well as bought out accessories and the names of sub-suppliers selected from those furnished alongwith offers.
ii) Type test certificates of the raw materials and bought out accessories if required by the purchaser.
iii) Quality assurance plan ( QAP) with hold points for purchaser's inspection.
The quality assurance plant and purchasers hold points shall be discussed between the purchaser and bidder before the QAP is finalized.
C) The contractor shall operate systems which implement the following :
i) Hold point : A stage in the material procurement or workmanship process beyond which work shall not proceed without the documental approval of designated individuals organizations. The purchaser's written approval is required to authorise work to progress beyond the hold points indicated in quality assurance plans.
ii) Notification point : A stage in the material procurement or workmanship process for which advance notice of the activity is required to facilitate witness. If the purchaser does not attend after receiving documented notification in accordance with the agreed procedures and with the correct period of notice then work may proceed.
D) The successful bidder shall submit the routine test certificates of bought out accessories and central excise passes for raw material at the time of routine testing if required by the purchaser and ensure that Quality Assurance program of the contractor shall consist of the quality systems and quality plans with the following details.
i) The structure of the organization.
The duties and responsibilities assigned to staff ensuring quality of work.
The system for purchasing taking delivery and verification of material.
The system for ensuring quality workmanship.
The system for retention of records.
The arrangements for contractor's internal auditing.
A list of administration and work procedures required to achieve and verify contract's quality requirements these procedures shall be made readily available to the project manager for inspection on request.
ii) Quality Plans :
An outline of the proposed work and programme sequence. The structure of the contractor's organization for the contract.
The duties and responsibilities assigned to staff ensuring quality of work.
Hold and notification points.
Submission of engineering documents required by the specification.
The inspection of materials and components on receipt. Reference to the contractor's work procedures appropriate to each activity.
Inspection during fabrication/ construction.
Final inspection and test.
ANNEXURE II :
Sr.No. |
Component function |
Requirement |
Makes and Origin |
1 |
Current Transformers |
The Meters should be with the current transformers as measuring elements .
The current transformer should withstand for the clauses under 5&9 of IS-13779 /1999 |
The current transformer should withstand for the clauses under5&9 of IS-13779 /1999 |
2 |
Measurement or computing chips |
The measurement or computing chips used in the Meter should be with the Surface mount type along with the ASICs. |
USA: Anolog Devices, Cyrus Logic, Atmel, Philips
South Africa :SAMES
Japan : NEC |
3 |
Memory chips |
The memory chips should not be affected by external parameters like sparking, high voltage spikes or electrostatic discharges. |
USA: Atmel, National Semiconductors, Texas Instruments, Philips, ST,
Japan : Hitachi |
4 |
Display modules |
a) The display modules should be well protected from the external UV radiations.
b) The display visibility should be sufficient to read the Meter mounted at height of 0.5 meter as well as at the height of 2 meters ( refer 3.2 d for Viewing angle ).
c) The construction of the modules should be such that the displayed quantity should not disturbed with the life of display ( PIN Type ).
d) It should be trans-reflective HTN or STN type industrial grade with extended temperature range. |
Hongkong : Genda
Singapore: Bonafied Technologies.
Korea: Advantek
China : Success
Japan : Hitachi,
Sony. |
5 |
Communication
Modules |
Communication modules should be compatible for the two RS 232 ports ( one for optical port for communication with meter reading instruments & the other for the hardwired RS 232 port to communicate with various moderns for AMR ) |
USA: National , Semiconductors HP, Optonica
Holland / Korea : Phillips
Japan : Hitachi
Taiwan: Ligitek |
6 |
Optical port |
Optical port should be used to transfer the meter data to meter reading instrument.
The mechanic |
