Table of Contents · 2019-09-13 · requirement given in this specification which is based on...

of 33

Table of Contents 1. SCOPE: ................................................................................................................................ ................ 3

2. STANDARD APPLICABLE: ................................................................................................ .............. 3

3. SUPPLY SYSTEM:.............................................................................................................................. 4

4. SUPPLY VARIATION: ................................................................................................ ....................... 4

5. CLIMATIC CONDITION:................................................................................................ .................. 5

6. GENERAL REQUIREMENT:................................................................................................ ............ 5

7. METER HOUSING CONSTRUCTIONAL REQUIREMENT: ................................ ........................ 6

8. METER CONSTRUCTION REQUIREMENT WITH RESPECT OF ELECTRICAL: .................. 9

9. SEALING: .......................................................................................................................................... 13

10. DISPLAY MODULE: ........................................................................................................................ 14

11. DISPLAY PARAMETER: ................................................................................................................. 14

12. NAME PLATE/MARKING OF METER: ........................................................................................ 15

13. QUANTITIES TO BE MEASURED, DERIVED, MONITORED AND MEMORISED: .............. 16

14. MAXIMUM DEMAND: .................................................................................................................... 17

15. MAXUMUM DEMAND RESET: ..................................................................................................... 17

16. CONFIGURATION DETAILS: ........................................................................................................ 17

17. SELF DIAGNOSTIC: ....................................................................................................................... 17

18. FIXED PARAMETERS/INFORMATION: ..................................................................................... 18

19. TAMPER FEATURES: ..................................................................................................................... 18

20. COMMUNICATION CAPABILITIES: ........................................................................................... 20

21. BASE COMPUTER SOFTWARE(BCS): ......................................................................................... 20

22. PROGRAMMING: ............................................................................................................................ 23

23. SUBMISSION OF TENDER SAMPLE: .......................................................................................... 23

24. TYPE TEST REPORT: ..................................................................................................................... 24

25. MINIMUM TESTING FACILITES: ............................................................................................... 24

26. PROTO TYPE TEST: ........................................................................................................................ 25

27. ACCEPTANCE TYPE TEST: ........................................................................................................... 25

28. AUDIT TEST: .................................................................................................................................... 26

29. ROUTIN TEST: ................................................................................................................................. 26

30. INSPECTION: ................................................................................................................................... 27

31. QUALITY ASSURANCE PLAN: ...................................................................................................... 27

32. BIS LICENSE: .................................................................................................................................. 28

33. GUARANTEE PERIOD: .................................................................................................................. 28

34. PACKAGING: .................................................................................................................................... 28

of 33

35. SERVICES: ........................................................................................................................................ 28

36. ANNEXURE -I: ................................................................................................................................. 29

37. ANNEXURE -II: ............................................................................................................................... 31

38. ANNEXURE III: ............................................................................................................................... 33

of 33

TECHNICAL SPECIFICATION FOR BIDIRECTIONAL FOUR QUADRANT CT OPERATED LT STATIC METER HAVING 100/5A & 200/5A CURRENT RATIO TRIVECTOR STATIC METER FOR SOLAR AND TARRIF METERING WITH DLMS PROTOCOL AS PER IS 15959

1. SCOPE:

This specification covers the design, manufacture &assembly of static LTCT bidirectional four quadrant electronic meter of Class 0.5s accuracy of current range 100/5A & 200/5A for Solar Net Metering and tariff purpose along with other associated component as per requirement given in this specification which is based on IS-14697/99, The meter should be compliant to IS 15959 as per relevant category C1, however meters matching with requirements of IEC-62053-22,or other international standards which ensure equal or better performance than the standards mentioned above shall also be considered. The meter shall be bidirectional for energy. Some parameters asked in this specification may not cover in C1 category. OBIS code of such parameters available in other categories of IS 15959 may be used

I) The meter shall be 3 phase 4 wire type suitable for connection to LT 3X 240V, 3 phase 4 wire systems. The meter shall be suitable for balanced as well as unbalanced load at all power factors i.e. Zero lag-Unity –Zero lead. The meter shall be capable to record and display kWh, KVARH, KVAH and maximum demand in kW for 3 phase 4 wire AC balanced/unbalanced loads for a power factor range of zero (lagging), unity and zero (leading) as per requirement given in this specification. II) It is not the intent to specify completely herein all the details of the design and construction of meter. The meter shall, however, conform in all respects to high standards of engineering, design and workmanship and shall be capable of performing for continuous commercial operation. The meter shall have to be procured from the original manufacturer who is registered vendor of UGVCL or other subsidiaries of GUVNL.

2. STANDARD APPLICABLE:

While drafting these specifications, reference has been made to following Indian and International Standard Specifications. In case, certain details are not covered in these specifications, the relevant latest Indian/International Standard shall be applicable..

IS 14697/ 1999 Specification of AC Static Watt hour meters, class 0.5s. IEC 62053-22-2003 Specification for AC static Watt-hour Meters, Class 0.5s. IEC 1036 Static Energy Meters

IEC 62052-11 Electrically Metering equipment (AC)–General Requirement, Test & Test condition

IEC 62053-21 Static Energy Meters for Active Energy

of 33

IS 9000 - Environmental testing IS 8161 (Draft) - Impulse wave testing IS 12346 - Specification for testing equipment for AC energy meters. IS 8686 - w.r.t. High frequency disturbance testing

IS-15707 Specification for Testing, evaluation, installation & maintenance AC Electricity Meters-Code of Practice of

CBIP-325 CBIP guide on static energy meter specifications & testing on standard for Operation of meters

IS 15959

Data exchange for electricity meter reading, tariff and load control- companion specification

CEA Notification Dtd: 17/03/2006,04/06/2010, 26/11/2014 Government of Gujarat Energy and Petrochemical department G.R. NO. SLR-11-2015-2442-B DTD 13th August 2015

NOTE: Unless otherwise specified elsewhere in this specification the meter shall conform to the latest version available of the standard as specified above. If above IS/IEC reports are amended, reference has to be made to Amended IS/IEC/Report.

3. SUPPLY SYSTEM: 3.1 Standard reference voltage: Vref =3*240V(Phase – Neutral)( Solid neutral grounded) 3.2 Standard Basic Current: In = -/5 Amp. 3.3 Rated Max. Current: Imax = 10 Amp. (200% Ib) 3.4 CT ratio: 100/5A, 200/5A 3.5 Standard frequency: 50 Hz.

4. SUPPLY VARIATION: The electrical quantities are required to be measured with a fine degree of precision, monitor, display and store in non-volatile memory of high precision static demand and energy Tri-vector meters of 0.5s class accuracy for energy audit, load survey, tariff metering and Domestic, Govt. Building Rooftop purposes at the installation of consumers, conforming to latest standard applicable. These meters are required to function accurately within the specified limits of errors under the following conditions of voltage, frequency, current, tamperature& climatic condition.

4.1 Voltage range: -30% to +20% of ref. voltage 4.2 Current ratio: 100/5A, 200/5A 4.3 Frequency: 50 Hz +5.0% to –5.0 %. 4.4 Tamperature& Temp. co efficient: -10 deg. C. to 70 deg. C. with temp. Coefficient as 0.05 4.5 Humidity: 95% (sometimes approaches to saturation).

of 33

5. CLIMATIC CONDITION:

Sr.No

Particulars Specified Requirements

1 Locations At various LT Connections in the state of Gujarat

2 MAX. Ambient Air Tamperature 55 Deg. Centigrade

3 MAX. Ambient Air Tamperature in closed Box UP TO 65 Deg. Centigrade

4 Minimum Air Tamperature 0 Deg. Centigrade

5 Average Daily Ambient Tamperature 25 TO 35 Deg. Centigrade

6 MAX. Relative Humidity 100 %

7 MAX. Altitude above mean sea level 1000 METERS

8 Average Annual rain fall 700 TO 900 MM

9 MAX. Wind Pressure 200 /Sq. MM

6. GENERAL REQUIREMENT:

The meter shall comply all general and constructional requirements as per IS 14697 (1999), IEC 62053-22-2003 and latest amendment.

6.1 The meter should be housed in a safe, high grade, unbreakable, fire resistant, UV stabilized, virgin Polycarbonate casing of projection mounting type. The meter cover should be transparent, for easy reading of displayed parameters, and observation of operation indicators. The meter base & terminal block shall not be transparent. The meter casing should not change shape colour, size, and dimensions when subjected to 200 hrs. on UV test as per ASTMD 53.

6.2 Meter shall be designed and constructed in such a way to ensure especially personal safety against electric shock, effect of excessive tamperature, safety against spread of fire and protection against solid objects, dust and water etc. All parts, which are subject to corrosion under normal condition, shall be effectively protected. Any protective coating shall not be liable to damage by ordinary handling nor damage due to exposure under normal working condition.

6.3 All insulating materials used in the construction of the meter shall be substantially non hygroscopic, non-ageing and of tested quality.

6.4 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.

6.5 All parts of the meter should be resisted against mechanical stroke and shake during the transportation.

of 33

7. METER HOUSING CONSTRUCTIONAL REQUIREMENT:

7.1 Meter shall be designed and constructed in such a way so as to avoid causing any danger during use and under normal conditions. However, the following shall be ensured.

a) Personal safety against electric shock b) Personal safety against effects of excessive tamperature c) Protection against spread of fire d) Protection against penetration of solid objects, dust and water

7.2 The meter shall be projection type and dust and moisture proof. The meter base & cover shall be made out of 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 IP 51 degree of protection as per IS 12063 against ingress of dust, moisture & vermin.

7.3 The meter cover and base shall be suitably shielded so as to protect the meter from adverse effect of AC/DC, Permanent Abnormal external magnetic field. The meter shall meet the requirements of CBIP-325with its latest amendment for immunity against continuous magnetic induction and abnormal ESD device.

7.4 MATERIALS OF BASE/COVER/TERMINAL COVER:

a) The construction of the meter shall be suitable for its purpose in all respects and shall

be given reasonable assurance of continuous performance in all mechanical, electrical and magnetic adjustments. The construction shall be such that the meter is prone to produce audible noise in use. The meter cover & terminal cover shall be of injection moulded in transparent UV stabilized polycarbonate in a natural transparent colour.

b) The meter base, cover and extended terminal block cover (ETBC) shall be injection

moulded and made of unbreakable high grade flame retardant polycarbonate having good dielectric and mechanical strength to ensure high reliability and long life. The construction of the meter shall be suitable for its purpose in all respects. The meter shall be compact & reliable in design & shall be immune to vibration & shock involved in transportation/handling. The entire design and construction shall be capable of withstanding the severe stresses likely to occur in actual service.

c) Polycarbonate material of only renowned manufacturers shall only be used.

d) The meter base shall be manufactured from high quality industrial grade material viz.

Polycarbonate with 10 % glass filled or better which shall meet following properties to ensure higher reliability and long life of the meter case. Meter base, over & terminal cover shall conform to the following.

of 33

Sr No Test

10% Glass filled for meter base & terminal block

Transparent for meter Cover & terminal cover

1

UV ageing for 200 Hrs. as per ASTM : G53(CL

No. 9.3)

4 Hours UV at 60° C, 4 Hours condensation at

50° C

4 Hours UV at 60° C, 4

Hours condensation at

50° C

2 Boiling water test(10MIN) No Softening & No softening &

whitening & No whitening & No

change in colour, change in colour,

shape, size & shape, size &

dimensions dimensions

3 Drop Test from 2 MTRS Shall not Crack or Shall not crack or

height-only for casing i.e. break break

base + cover + terminal

block + terminal cover,

(Without inside assembly)

4 Glow wire test IS:11000 960 ±15° C 650 ±10° C

(part 2/SEC-1) 1984 OR (For terminal block) (For Terminal cover

IEC PUB,60695- and meter case

2-12

5 Heat deflection 132° C 125° C

Temp.(HDT) HDT/

1.8MPa (100mm)

As per ISO 75

6 Ball pressure test as per 125°C +/- 2°C 125°C +/- 2° C

IEC-60695-10-2

7 Flammability Test (a) As V-0 V-0

per UL 94 or (b) As per IS

11731(Part-2) 1986

8 Minimum Thickness 2.0 mm 2.0 mm

e) The thickness of casing, base & terminal cover shall be minimum 2.0 mm±0.2mm.

Sufficient clearance shall be allowed between terminals. Further, the supporting webs between the two terminals of the terminal block should be sufficiently high to ensure that the two Neighbouring terminals do not get bridged by dust or it is not possible to have flash over between adjacent terminals of terminal block.

f) Meter base cover and terminal block should be injection moulded and should not be transparent.

g) Meter top cover and terminal cover should be injection moulded in transparent natural colour.

h) The embossing/engraving/ permanent marking of manufacturer’s logo/ trade name & DISCOM name shall be provided on meter base, meter cover and terminal cover

of 33

7.5 METER COVER FIXING ARRANGEMENT:

At least two screws of Nickel plated steel with sealing arrangement shall be provided for proper fixing of meter cover.

7.6 METER BASE FIXING ARRANGEMENTS:

Meter shall have minimum two fixing holes, one at top & other at bottom. The top screw hole shall be provided on back of the meter so that screw head are not accessible after the meter is fixed. Lower hole shall be provided inside the terminal compartment so as to make them in accessible to an unauthorized person after terminal cover is fixed.

7.7 INSULATION MATERIALS:

All insulation materials used in the construction of meter shall be substantially non hygroscopic.

7.8 PROTECTION OF PARTS:

All parts, which are subjected to corrosion under normal working condition, shall be effectively protected against corrosion due to atmospheric condition. The protection coating shall not be liable to damage by ordinary handling or injuriously affected by exposure to air under normal condition of service in actual practice in Gujarat state.

7.9 SCREW /INSULATION: All electrically live screws shall be of heavily tinned brass or equivalent. All other screws shall be electroplated. The terminal should be properly bound in the insulation.

7.10 TERMINAL BLOCK The terminal block shall be of POLYCARBONATE of FR & glass filled quality & shall fulfil requirements: (as per table given under clause no 7.4 (d). The terminal block shall be of high grade non-hygroscopic, fire retardant, low tracking fire resistant, reinforced poly-carbonate or equivalent high grade engineering plastic which shall form an extension of the meter. Standard terminal block as per IS: 14697/1999 (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.

7.11 TYPE OF TERMINAL COVER: The Terminal cover shall be transparent, extended open type & shall enclose terminal compartment except for the provision of conductor entry at the bottom for incoming & outgoing leads. The terminal block, the ETBC meter cover & meter base shall ensure

of 33

reasonable safety against the spread of fire. They shall not be ignited by thermic overload of live parts in contact with them.

7.12 CONNECTION DIAGRAM & TERMINAL MARKING:

The connection diagram of the meter shall be clearly shown in inside portion of the terminal cover & shall be of permanent nature. Meter terminals shall also be marked & these markings should appear in above diagram.

7.13 LENGTH AND MATERIALS OF TERMINAL:

The length of terminal in the terminal block shall be adequate to have a proper grip of the conductor with the help of the screw.

7.14 The internal diameter of terminal holes should be minimum 5.5 mm and shall be of sufficient size to accommodate the insulated conductors & meeting the requirement. The materials of the terminals shall be of Nickle plated brass.

7.15 TYPE OF TERMINALS: The terminals shall be suitable to carry rated continuous maximum current and short time overload current & be made of brass. PC ends shall be provided with lugs. The terminals shall have suitable construction with barriers and cover to provide firm and safe connection of current and voltage leads of stranded copper conductors or copper reducer type terminal ends (thimbles).The manner of fixing the conductors to the terminal block shall ensure adequate and durable contact such that there is no risk of loosening or undue heating. Screw connections transmitting contact force and screw fixing which may be loosened and tightened several times during the life of the meter shall be such that the risk of corrosion resulting from contact with any other metal part is minimized. Electrical connections shall be so designed that contact pressure is not transmitted through insulating material.

7.16 TERMINAL SCREWS:

The terminal screws shall be of brass metal. The screws shall not have pointed end of threads. All connection screws and washers should be tinned/nickel plated brass. All terminals will have two screws. The terminals shall be properly bound in the insulation.

7.17 Creepage and clearance shall be as per relevant standard:

7.18 The top cover should be ultrasonically welded OR break to open type arrangement.

8. METER CONSTRUCTION REQUIREMENT WITH RESPECT OF ELECTRICAL:

8.1 The meter should have internal Real Time Clock with the backup of a Lithium maintenance free battery of minimum life of Ten (10) years for operation of the time clock. The Real Time Clock shall be based on Quartz crystal timer so as to make it

of 33

independent of line frequency variations. 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 0 C to 50 C.

8.2 The RTC battery & the battery for display in case of power failure should be separate Battery for the display should be such that

(a) In case of power failure, even for the period for six months display can be seen by push button and data can be retrieved through battery mode.

(b) Meter should have suitable arrangement to show at least "Cumulative Active Energy KWh" continuously or at an interval of 2 minutes during power OFF condition of 18 hours without use of push button. (For Import & Export both for 10 sec. each)

8.3 The facility for reading the meter in absence of power supply shall be provided. This

facility shall be powering from a separate internal battery having minimum life of 10 years.

8.4 The registered parameters shall not be affected by loss of power. The display shall not be affected by electrical and magnetic disturbances. The meter shall make use of non-volatile memory capable of storing and retaining all the data required to be stores, without the help of any power source or battery backup and shall have a minimum retention time of 10 years under unpowered condition.

8.5 OUTPUT DEVICE: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. It shall be possible to check the accuracy of active energy measurement in both the directions i.e for Import & Export both 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.

8.6 CURRENT AND VOLTAGE ELEMENTS:

a) The meter cover and base shall be suitably shielded so as to protect the meter from adverse effect of AC/DC Abnormal external magnetic field. The meter shall meet the requirements for immunity against continuous magnetic induction as per requirement.

b) PT less design is highly preferred i.e. for power supply to PCB, in place of conventional electromagnetic VTS; use of potential divider is preferred.

c) In meter, power supply unit should be micro control type instead of control transformer type to avoid magnetic influence.

d) Meter shall be capable of withstanding switching and transient surges so as to protect the internal meter circuit.

e) ELECTROMAGNETIC COMPATIBILITY AND INTERFERENCE REQUIREMENT The meter shall meet EMI/EMC requirements as specified in the relevant standards and shall also be protected against radiated interference from either magnetic or radio frequency sources. The meter shall be designed in such a way that the conducted or radiated electromagnetic disturbance

of 33

as well as electrostatic discharge do not damage or substantially influence the meter. The meter shall work satisfactory with guaranteed accuracy as per limit of IS:14697 , IEC 62053-21 (2003) under presence of the following quantities. The disturbance(s) to be considered are:

(i) Harmonics (ii)Voltage dips and short interruptions (iii)Fast transient burst test (iv)External D.C. and A.C. magnetic fields (v)Electromagnetic H.F. fields (vi)Electrostatic discharges & HVHF Field (vii)Radio frequency interference suppression

f) Short Time over current: The meter shall be able to carry short time over current of 30 Imax for half cycle at rated frequency.

g) Application of abnormal voltage/frequency: Meter should not be affected/or hanged by nonstandard equipment like jammer. The accuracy of the meter should not be affected with the application of abnormal voltage/frequency such as spark discharge of approximately 35KV in any/all of the following manner for total 10 minutes:

i) On any of the phases and neutral terminals ii) On any connecting wires of the meter iii) Voltage discharge with 10 mm spark gap iv) At any place in load circuit v) Spark on meter body. “After the application of spark discharge meter should operate normally and meter should register the correct energy”.

h) IMPULSE VOLTAGE:

The meter shall withstand 1.2/50 microsecond impulse voltage of peak value 10 KV Peak without any damage in line with Clause 12.7.6.2 of IS 14697:1999. Error at Ib, Upf before & after will be measured & after the test, variation in % error of the meter shall not exceed 50 % of class of index.

i) TAMPERATURE RISE

i) Under normal conditions of use, measuring element and insulation shall not reach a

tamperature, which might adversely affect the operation of the meter. ii) With each current circuit of meter carrying rated maximum current and with each voltage

circuit (and those auxiliary voltage circuits which are energized for periods of longer duration than their normal time constant) carrying 1.25 times the reference voltage, the tamperature rise of the respective parts shall not exceed the value given below over and above an ambient tamperature of 50˚C.

of 33

Measuring element: 50˚C External surface of the case: 15˚C

8.7 PRINTED CIRCUIT BOARD& ITS BOUGHT OUT ITEMS

The fully tested double layered glass epoxy shall be used. The latest technology such as hybrid microcircuit or application specific integrating circuit (ASIC) shall be used to ensure reliable performance. The mounting of components on the PCB shall be SMT (Surface Mounted Technology) Type. The electronic components used in the meter shallbe of high quality from world renowned manufacturers and there shall be no drift in accuracy of the meter for at least up to Guarantee period. The make/grade and the range of the components should be from the renowned manufacture. Bidder has to submit list of following components manufacturers using in meters. This list shall be checked with bid and at time of proto type sample/ lot inspection.

Sr Component Requirement No Function

1 Current If the Meter is with one current Transformers transformers as measuring elements. The current transformer Should withstand for the clauses Under 5&9 of IS- 14697 /1999

2 Measurement The measurement or Computing Chips chips used in the Meter should be with the Surface mount type along with the ASICs.

4. Quartz Crystal

5 Memory chips The memory chips should not be affected by external parameters like sparking, high voltage spikes or electrostatic discharges. There shall be security isolation between metering circuit, communication circuit & power circuit.

6 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. 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 STN type industrial grade with extended tamperature range.

7 Communication Communication modules should be Modules compatible for the optical Port

for communication with meter reading instruments.

8 Optical port Optical port should be used to transfer the meter data to meter reading

of 33

9. SEALING:

9.1 The construction of the meter shall be such as to be sealed independently and prevent unauthorized tampering. Meter should be sealed in such way to prevent unauthorized access. Any attempt for Opening the meter's main cover should not be possible unless by breaking the meter's case.

9.2 All the seals shall be provided on front side only. Rear side sealing arrangement shall not be accepted.

9.3 The supplier shall have to supply meter dully sealed with two nos. of Polycarbonate seals having supplier’s logo and serial numbers The polycarbonate seal has unique number embossed on male and female part of the seal. (one seal has only one unique number).

9.4 The provision shall be made on the Meter for at least two seals to be put by utility user. 9.5 At least two sealing screws of Nickel plated steel shall be provided for proper fixing of

meter cover. Each sealing screw shall have Four independent sealing holes. Two hole should be provided in the head and Two in the bottom portion, so that two separate seals can be provided. The diameter of the hole shall accommodate two seals one by supplier and other by utility. OR provide any alternate arrangement with minimum 02

instrument. The mechanical construction of the port should be such to facilitate the data transfer easily. The Optical Port should not be adversely affected by Influence of electromagnetic field, Static discharge.

9 Power supply The power supply should be with the Capabilities as per the relevant standards. It should not be affected in case the maximum voltage of the system appears to the terminals due to faults or due to wrong connections

10 Electronic The active & passive components components should be of the surface mount type & are to be handled & soldered by the state of art assembly processes.

11 Battery Chargeable maintenance free guaranteed life of 10 years.

12 RTC & Micro The accuracy of RTC shall be as per controller. relevant IEC/ IS standards.

13 PCB Glass Epoxy, fire resistance grade FR4, with minimum thickness 1.6 mm

of 33

nickel plated screws which will meet our requirement for sealing as per our prevailing arrangement.

9.6 The meter terminal cover, there shall be two similar tinned brass or nickel plated steel sealing screw for the terminal cover.

9.7 Sealing arrangement for communication ports shall be provided. 9.8 The sealing required on MD Reset Button. 9.9 The supplier has to provide two security seals on meter body. The security seals shall be

as per ANNEXURE:III 9.10 The supplier must kept records of sealing done at their works. 9.11 Above sealing requirements shall be checked approved in proto type sample.

10. DISPLAY MODULE:

The 7 Digit LCD display having minimum 10 mm height for all digits shall be provided.

The display shall be permanently backlit LCD. It should be visible in daylight. The back lit should not glow during power off condition.

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.

The LCD shall be of STN (super twisted pneumatic type) constructing suitably for tamperature withstand of 80oC (storage) & 65o

(i) When the meter is placed over at a constant tamperature of 65

C (operation) i.e.

o

(ii) After keeping the meter at a constant tamperature of 80

C for a period of 30 minutes, the character of LCD should not deform.

oC for a period of 30 minutes and when restores at normal tamperature, LCD display should work satisfactorily. The LCD display should have a wide viewing angle of 120o and up to one meter distance, for clear visibility of the display of the meter reading at distance. Large viewing area with large display icons is preferred. The registered parameters shall not be affected by loss of power. The display shall not be affected by electrical and magnetic disturbances. Viewing angle of 120o

(iii) Dot Matrix type LCD display is not acceptable.

shall be verified during proto type sample and lot inspection.

(iv) Operational LCD indicators: Meter should indicate the healthy working of meter. The LCD notation must be easily interpretable.

11. DISPLAY PARAMETER:

The meter should have legible LCD with backlit minimum 7 digits and automatic in cyclic order display. In case a single display is being used to display the values of various parameters in rotation, it should be possible to display contents of relevant memories continuously in a specified cyclic order. Each of the physical quantities shall remain on the display screen for a time interval of Ten seconds which should be programmable with latitude of one second on either side. While displaying the memories, proper and adequate legible and understandable text identification of each of the quantities being displayed shall be made (like 24 hours, night period, peak, and TOD parameters, TAMPER

of 33

indications etc.). The Sequence of the display parameter must be as per ANNEXURE I.

12. NAME PLATE/MARKING OF METER:

The meter terminal marking and mounting arrangement shall be as per Indian Standard/IEC. The marking on every meter shall be in accordance with IS 14697/1999. The meter shall have name plate beneath the meter cover such that the name plate cannot be accessed without opening the meter cover and without breaking the seals of the meter cover and the name plate shall be marked indelibly. The name plate marking shall not fade with lapse of time. The basic marking on the meter nameplate shall be as under:

1. Manufacturer's name and trade mark 2. Type designation 3. Nos. of phases and wire 4. Serial number 5. Month and Year of manufacture and guarantee period. 6. A/T number (if any) 7. Reference voltage 8. Rated & Maximum Current 9. CT ratio 10. Principal units of measurements (KWH,KVARH,KVAH) 11. Meter constant (Imp/kWh& Imp/kvarh) 12. ‘BIS’ Mark (Applicable for Indian meter manufacturers only) 13. Accuracy Class of meter (class-0.5s). 14. Bar Code/QR code identification shall contain details of (i) The make, (ii) Sr no and (iii)

Model/type 15. “Property of UGVCL” (Purchaser DISCOM) 16. “BIDIRECTIONAL METER” in bold font 17. “As per Standard IS 15959:2011 category C1”

Name plate details alphabets should be with suitable size letters and can be read easily. Other marking as per IS 14697 and IS 15959 should be provided on the name plate

Meter Sr. no must be on name plate. Unique Alfa-numeric character be given to Meter, numeric part will appear on meter display and Alfa-numeric part will appear in BCS (MRI data) as well as on name plate. There should be Clear indication on “MD Reset” Push Button, “Up- Scrolling”, “Down- Scrolling” etc.,

of 33

13. QUANTITIES TO BE MEASURED, DERIVED, MONITORED AND MEMORISED:

i) Sampling Rate & Derivation of Basic Measurable Quantity: The actual supply wave of related voltages and currents should be sampled out at the rate of minimum 3000 samples per second and should provide integrated values of actual voltage and current cycle and angle between them. while deriving actual basic Active(cosinepart measurable component) energies (with respect to relevant voltage wave and current wave )& actual basic Reactive ( sine part measurable component ) energies ( with respect to relevant voltage wave and current wave ) to assess actual contents of energies persisting / traversing, to have up to-date information for total energy even when highest order of Harmonics is present in supply wave. Voltage for all three phase

Current for all three phase Power Factor for all three phase Frequency Date and Time

ii) Total Cumulative Import Active Energy: Total Import active energy i.e. with highest order of harmonics, at all loads and power factors i.e. zero lag unity zero lead.

iii) Total Cumulative Export Active Energy: Total Export active energy i.e. with highest order of harmonics, at all loads and power factors i.e. zero lag unity zero lead.

iv) Reactive energy: Lag & Lead(Four Quadrant). v) Apparent Energy: Vectorial summation of Total Active Energy and Reactive Energy

with Lead PF treated as Unity Power Factor(Import & Export Mode). vi) The meter should also have provision for automatic recording of cumulative KWh at

24.00 Hrs on the last day of the month for each calendar month and the same should go to memory.

vii) The meter should record Total cumulative KWh reading and KW MD at pre-programmed date and time of the month for minimum last TWELVE calendar months and stored in NVM. Meter shall be capable to record & store daily midnight data for cumulative kwh & it should be available in base computer. (For Import & Export both).

viii) The meter shall be capable to measure and display (I) Cumulative Total (Fundamental+ Harmonics energy) KWh for tariff billing purpose, Instantaneous KW, Instantaneous Voltage, Instantaneous line current, MD KW, time and date.

ix) The meter shall also be capable of measuring, monitoring and storing in the memory minimum eight (8) zones of time of day electrical quantities for pre-specified periods of the day. TOD TIMINGS: The meter should have eight time zones; however it should be configured for following four zones:

Sr.

No.

TOD Details Timings Total Hours

in TOD

1. TOD-1 (Peak) 07:00 Hrs. to 11:00 Hrs. Plus

18:00 Hrs. to 22:00 Hrs.

8

of 33

14. MAXIMUM DEMAND:

i) Maximum Demand Integration Period: Integration period for KWMD & KVA MD should be of 15 minutes real time based for both import and export. However the same shall be programmable through CMRI or Laptop for 15/60 minutes with the help of BCS/CMRI software through authenticated password only

ii) The energy meter shall continuously monitor and calculate the average maximum demand for each demand for time interval of 30 minutes and maximum of these in a calendar month shall be stored.30 years calendar shall be programmed by manufacturer

15. MAXUMUM DEMAND RESET:

The maximum demand shall automatically be reset at 24.00 hours of the last day of each calendar month.

16. CONFIGURATION DETAILS:

The following Configuration Details is required to be stored and displayed whenever required. RTC TOD MD INTEGRATION PERIOD AUTO MD RESET DATE UNAUTHORISED PROGRAMMING ATTEMPT

17. SELF DIAGNOSTIC: The meter shall keep log in its memory for unsatisfactory / non-functioning of the following

i) Time and date on meter display ii) All display segments on meter display iii) Real Time Clock (RTC) status in meter reading prints out at BCS end

2. TOD-2 (Night) 00:00 Hrs. to 06:00 Hrs. Plus

22:00 Hrs. to 24:00 Hrs.

8

3. TOD-3 (Rest) 06:00 Hrs. to 07:00 Hrs 1

4. TOD-4 (Off Peak) 11:00 Hrs. to 18:00 Hrs. 7

Moreover, Export Kwh recorded during below mentioned non solar hours shall be recorded and displayed.

1 (Non Solar) 20:00 Hrs. to 05:00 Hrs. 9

of 33

iv) Non-volatile Memory (NVM) status in meter reading prints out at BCS end v) Battery status

18. FIXED PARAMETERS/INFORMATION:

Must be kept recorded permanently i) Meter Make and Sr. No. ii) Prevailing integration period iii) Automatic re setting date and time iv) Tariff time Zone. v) Meter voltage and current capacity

19. TAMPER FEATURES:

(i) The measurement by meter shall not get influenced by injection of AC chopped signal/ DC signal and harmonics on the terminals of the meter. Complete metering system & measurement shall not be affected by the external electro magnetic 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 requirements for immunity against continuous magnetic induction as per requirement mentioned below.

(ii) The meter shall indicate nos. of Tamper conditions illustrated in the Annexure-II. (iii) The meter shall record the occurrence and restoration of all tampers and related

snapshots as per IS 15959:2011 (iv) If the “Top cover open” tamper occur, C-OPEN should only to be displayed during

power ON and OFF both conditions. Display should stuck (i.e. No Scrolling of any parameters.). However, meter should record energy continuously & KWH reading shall be access/available by use of Push button. After five minutes again Display should stuck & C-OPEN should only to be displayed on Display. Top cover open tamper shall be logged permanently.

(v) The working of Meter under different magnetic influence conditions is as under for Active energy

a) Meter must be immune to the continuous D.C. stray magnetic field of 67mT± 5%. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.1, Table : 17 & its notes.

b) Meter must be immune to the A.C. stray magnetic field of 0.5mT± 5%. Method for the

testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.3, Table: 17 & its notes.

c) Meter should be immune to the continuous D.C. abnormal magnetic of 0.2 Tesla±

5%.In case of if it is not immune than Meter should switch over to 100% Imax, UPF. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.2, Table: 17 & its notes.

d) Meter should be immune to the A.C. abnormal magnetic of 10mT.In case of if it is not

of 33

immune than Meter should switch over to 100% Imax, UPF. Method for the testing & obtaining magnetic field should be as per CBIP 325 clause No 5.6.2.4, Table: 17 & its notes.

e) Meter should be immune to the A.C. abnormal magnetic of 0.2 Tesla± 5%. In case of if it is

not immune than Meter should switch over to 100% IMAX, UPF.

Method of testing & obtaining magnetic field shall be as under.

The abnormal A.C. magnetic induction emanating from a circular air cored coil (O.D. 200 mm, I.D. 38 mm, Depth 50 mm, 14 SWG, 20000 ampere-turns) producing 0.2 Tesla± 5% in the central region of its either surface shall be applied successively to all the surfaces of the meter and under the most unfavourable conditions of phase and direction to determine any abnormality under its influence.

(f) Meter should be immune to permanent magnet of 0.5 T of minimum size 70 x70 x 50 mm. In case of if it is not immune than Meter should switch over to 100% Imax, UPF. Tests at above sr. no.(e) & (f) are special requirement of DISCOM and for testing below mentioned test conditions are applicable.

(vi) During export or import mode, when the meter shall not immune to the magnetic field the energy recording on 100% Imax shall only in Import mode. In no case export energy shall be recorded meter on 100% Imax under magnetic influence.

(vii) In the event of logging of presence of abnormal magnetic induction with date and time, the positive variation of error may be beyond the limit of 4% but not exceeding a value (e) as given in Note 3.2 under Table 17 of CBIP 325, corresponding to nominal registration of the meter at reference voltage, 100% maximum current and cosΦ=1.

(viii) During the test(s) no abnormality like movement of digits, flickering/ switching on- off of

display abnormal heating and perceptible change of error should occur. After the test(s) there should not be any permanent change of error exceeding half the accuracy class index at Imax, CosΦ = 1 and 0.5 inductive and at 5% lb, CosΦ =1

(ix) Persistence time for occurrence and restoration of magnet event is one minute (x) Tamper to be stored in FIFO manner. The meter must kept recorded all above

events distinctly with type, identification and duration period in a rollover/rotational (i.e. FIFO) method and in NO case these tamper data shall be able to set “Zero”. Minimum events to be stored as follows: Minimum 400 events are required. i.e.200 Occurrence + 200Restoration (i.e. FIFO or in rotational/roll over method in block).

1. Voltage related150 ( Occurrence + restoration) 2. Current related 150 ( Occurrence + restoration) 3. Others: 100 (Occurrence + restoration) 4. Meter Cover Open Tamper: 1 ( Occurrence only + Not to be restore)

of 33

In addition of above minimum 20 nos power supply failure events should be separately available in BCS Power off: 50 (Occurrence + restoration)

20. COMMUNICATION CAPABILITIES:

The meter should have facility for data retrieval through optical port and RS232 using CMRI and Laptop PC.

i) The meter shall has a galvanic ally isolated optical communication port as per IEC PACT/ ANSI/ IEC 1107/ provided on the front of the meter to facilitate downloading the billing and history data to a CMRI / Base computer.

ii) The meter shall be provided with two ports for communication of the measured/collected data as per IS: 15959 (including latest amendment), i.e. a hardware port compatible with RS 232 specifications which shall be used for remote access through suitable Modem (GPRS/GSM/EDGE/CDMA/PSTN/LPR) and an Optical port complying with hardware specifications detailed in IEC-62056-21. This shall be used for local data downloading through a DLMS compliant HHU.

iii) The RS 232 port shall support the default and minimum baud rate of 9600 bps. The PIN configuration for RS 232 port shall be as under:

RS 232 Port RJ11 (4 PIN 4 connection) 1GND,2Rx, 3TX,4Vcc

21. BASE COMPUTER SOFTWARE(BCS):

(i) Supplier shall have to submit predefined copies of all the software’s, i.e. meter reading software for CMRI, Base computer software for meter data analysis and technical details etc.

(ii) Licensed copies of the software shall be made available to DISCOMs OR it should be compatible with software available with DISCOMs for installation on HHT or common meter reading instrument (CMRI) and Base computer software (BCS) by the supplier.

(iii) Windows based user interactive Base Computer Software (BCS) for receiving data from HHT or CMRI and downloading instructions from base computer software to CMRI.

(iv) Necessary software for loading application program into meter via CMRI. (v) The supplier should ensure that software supplied with this package works properly

with HHT or CMRIs of other manufacturers. (vi) The downloaded data shall be converted to the ASCII or database file format for easy

integration with the existing billing software of GUVNL. It should be user configurable as per selective parameters. It should be group ASCII & scalable.

(vii) After successful downloading data either from the meter or MRI, Meter data should be automatic uploaded to BCS without any separate procedure to upload data. Meter List shall be shown on computer Display screen.

(viii) There shall be provision of filter for finding the particular meter viz. one can find the meter on the basis of date, Month, Sr. No, etc

(ix) It should be possible to download the following data from the meter memory through the optical port and RS232.

of 33

Instantaneous Data:

The following Instantaneous data for Real Time is required to be stored and display whenever required:

This is real time data. It should display Instantaneous AC Voltage (Phase to Neutral) all three Phase Instantaneous AC Current all three Phase Instantaneous Power Factor Phase wise Instantaneous Three Phase Power Factor Instantaneous Total Power all three Phase (with sign) Instantaneous power phase wise (with sign) Total cumulative AC Energy(Import and export)

Real Date and Time

Billing Data or Energy:

The following Billing data for last 12 reset with TOD Zones is required to be stored and display whenever required: Current cumulative Total Active Energy (KWH both import and export) Reading with date and time, For twelve Last resets cumulative Total Active Energy (KWH both import and export) Reading with date and time(Cumulative as well as TOD Zone Wise) Current cumulative Reactive Energy (Kvarh lag) Reading with date and time, For twelve last resets cumulative Reactive Energy (Kvarh Lag) Reading with date and time. (Cumulative as well as TOD Zone Wise) Current cumulative Apparent Energy (Kvah both import and export) Reading with date and time, For twelve last resets cumulative Apparent Energy (Kvah both import and export) Reading with date and time. (Cumulative as well as TOD Zone Wise) Current Maximum Demand in KW (both import and export) with date and time, For twelve last resets Maximum Demand in KW (both import and export) with date and time. (Cumulative as well as TOD Zone Wise) Current Maximum Demand in KVA (both import and export) with date and time, For twelve last resets Maximum Demand in KVA (both import and export) with date and time. (Cumulative as well as TOD Zone Wise) Average Power factor Since Last reset. Average Power factor for Last twelve reset. (Cumulative as well as TOD Zone Wise)

of 33

Load Survey Data The following load survey parameters data for 62 days (power on days only) with 15 (e.g. 09:30 to 09:45) minutes integration is required to be stored and displayed whenever required: The load survey should be in tabular format and graphical format. The software should show the parameters as per daily, weekly, monthly requirement.

Date and Time Average AC Voltage for all three phase (Power On time only) Average AC Current for all three phase (Power On time only) Average Power factor for all three phase (Power On time only) Block Total cumulative Import AC Energy Block Total cumulative Export AC Energy Block Energy for Total Reactive Energy (KVarh lag) Block Energy for Total Reactive Energy (KVarh lead) Block Energy for Total Apparent Energy (KVAH) Average Maximum Demand in KW and KVA

Tamper Information:

The following Tamper Information data is required to be stored and displayed whenever required

The meter should record 400 such events (200 occurrence+ 200 Restoration). The tamper events shall be recorded in FIFO/Roll Over basis.

Snap Shots (numerical values) of voltage, current, power factor and energy (kWh) readings as well as the date and time of logging of the occurrence and restoration (both together) of tamper events.

Configuration Details:

The following Configuration Details is required to be stored and displayed whenever required.

RTC TOU MD INTEGRATION PERIOD PROGRAMMING ATTEMPT CT RATIO

Self-Diagnostics: The following Self Diagnostics is required to be stored and displayed whenever required.

Real Time Clock (RTC) status Nonvolatile Memory (NVM) status Battery status

of 33

All Data:

The above all data is required to be stored and displayed at BCS whenever required with single selection

BCS must have data collection scheduling configuration facility for data collections of multiple meters on particular day

22. PROGRAMMING:

1) The meter shall be software calibrated at factory end and shall be supplied with certificate along with dispatch. However modification of calibration should not be possible at site. The meter should not have any form of mechanical adjustments such as trip pots potentiometer etc. for calibration. The meter shall be tested, calibrated and sealed at manufacturer’s works before dispatch. Further, no modification of calibration shall be possible at site by any means what so ever.

2) The following Details is required to be stored and shall be available in BCS

RTC TOD MD INTEGRATION PERIOD AUTO MD RESET DATE& TIME LOAD SURVEY PARAMETER & INTERVAL TIMING CHANGE IN DISPLAY PARAMETER

Note: Meter shall have facility to change above parameter through authenticated pass ward. No hardware lock should be provided.

23. SUBMISSION OF TENDER SAMPLE:

The supplier shall submit Three nos. samples of meters of offered rating at the time of offer. Offer without sample will not be scrutinized on the strength of GTP. The samples are to be delivered to The Deputy Engineer : Regional Store Office: UTTAR GUJARAT VIJ COMPANY LTD.: Visnagar Road: Mehsana: 384001. Bidder has to submit the tender samples with DLMS as per IS-15959 & Display parameters and tampers as per Annexure-1. The samples shall be tested at ERDA/CPRI/NABL accredited lab for following tests. If the sample found failed in any of the test carried out at ERDA/ CPRI/NABL accredited lab, the offer of that bidder shall be considered disqualified. However, the decision of the company shall be final and binding to all the bidders.

List of tests to be conducted on tender sample/s as per IS 14697/99, IEC 62053-21 (2003) and as per the specification, wherever specified.

(i) Insulation resistance test as per IS 14697 (ii) AC high voltage test method as per IS-14697 but shall be taken at 4 KV for one minute.

of 33

(iii) 10 KV impulse voltage test as per -As per cl .no.8.6 (l). (iv) ESD Test for 35 KV as per cl .no. 8.6 (k) of specification (v) AC, DC and permanent magnet test as per as per specification clause no. 18 (viii to xi) (vi) DC and even harmonics in ac current circuit - Phase wise (DC immunity)-As per IS-14697 (vii) Dry heat test as per IS-14697 (viii) Test for total forward energy (Fundamental + Harmonics) as per specification IEC61053-21

clause No.8.2.1 & Table: 8 (ix) Test of effect of Influence quantity as per IS-14697 (x) Test of no load condition as per IS-14697 (xi) Test of starting condition as per IS-14697 (xii) Test for limit of error as per IS-14697 [for active(import& export) (Both Phase & Neutral

circuit) including 0.25 lag and 0.5 lead pf] (xiii) Interpretation of test results ,if required (xiv) Test of meter constant as per IS-14697 (xv) Repeatability of error test as per IS-14697 (xvi) Test of power consumption in voltage and current circuit as per IS-14697 (xvii) Short time over current test as per 8.6 (j) (xviii) Test for terminals and screws at 150% Imax for two hours. After the test no physical damage

should occur &% error should not exceed accuracy class of the meter. (xix) The meter shall be capable to withstand phase to phase voltage (440V) if applied

between phases to neutral for minimum 2 hours. (xx) Verification of display parameters and functional requirements (xxi) Verification of Tamper conditions - as per Annexure I, top cover open tamper, injection of

chopped A.C./Pulsating D.C. in neutral

24. TYPE TEST REPORT:

The supplier shall have all type test certificates from the Govt. approved laboratory viz: CPRI, NPL, ERTL, ETDC& ERDA for Indian supplier and for foreign supplier the certificate should be from recognized Govt. approved lab. of that respective country, as per IS No.14697 /1999 or IEC 62053:21 as the case may be. Type test should not be older than 7 years. The supplier shall have also the type test certificate as per clause No. 19 (v to xi) i.e. AC/DC magnetic influence test and Cl. No: as per specification IEC61053-21 clause No.8.2.1 & Table: 8, i.e. total energy test on the same rating of meter

25. MINIMUM TESTING FACILITES:

The Bidder shall have the necessary minimum testing facilities for carrying out the all thetests mentioned in Proto type test clause:

The manufacturer shall have duly calibrated ERS meter of Class 0.1 accuracy or better.

Manufacturer also shall possess automatic computerized meter test bench system for carrying out the relevant routine/acceptance tests as well as facility to generate test reports for each and every meter tested.

of 33

26. PROTO TYPE TEST:

The supplier shall also have to manufacture 3 nos. of prototype sample meters complying to all above technical specification, type, rating, functional requirements, tamper features, display design etc. and shall have to offer for inspection within 30 days from the date of placement of LOI and before commencement of bulk supply.

During the proto type sample following test shall be carried out as per the specifications at supplier’s works

(i) AC high voltage test -As per IS 14697 (ii) Insulation resistance test -As per IS 14697 (iii) Test of limits of errors for active & reactive (import & export) (Both Phase & Neutral

circuit) including 0.25 lag and 0.5 lead pf. -As per IS 14697 (iv) Test of meter constant-As per IS 14697 (v) Test of starting condition-As per IS 14697 (vi) Test of no load condition-As per IS 14697 (vii) Repeatability of error test-As per IS 14697 (viii) Test of power consumption in voltage and current circuit -As per IS 14697 (ix) ESD Test for 35 KV as per specification. (x) The meter shall record and display total energy including Harmonic energy As per

IEC61053-22 (xi) Test of effect of Influence quantity as per IS 14697. (xii) AC, DC and permanent magnet test as per specification clause no.18 (viii to xi) (xiii) Verification of Tamper conditions - as per Annexure-II, top cover open tamper. (xiv) Verification of display parameters - as per Annexure-I (xv) Verification of Viewing angle of LCD (xvi) Physical verification of meter as per specification including sealing as per

specification requirements

27. ACCEPTANCE TYPE TEST:

Following acceptance tests as stipulated in the relevant standards and as per specification shall be carried out by the supplier in the presence of the purchaser's representative on selected samples as per IS 14697 and IS 4905.

(i) AC high voltage test -As per IS 14697 (ii) Insulation resistance test -As per IS 14697 (iii) Test of limits of errors for active (import & export) (Both Phase & Neutral circuit)

including 0.25 lag and 0.5 lead pf. -As per IS 14697 (iv) Test of meter constant-As per IS 14697 (v) Test of starting condition-As per IS 14697 (vi) Test of no load condition-As per IS 14697 (vii) Repeatability of error test-As per IS 14697

of 33

(viii) Test of power consumption in voltage and current circuit -As per IS 14697 (ix) ESD Test for 35 KV as per specification. (x) The meter shall record and display total energy including Harmonic energy As per

IEC61053-22 (xi) Test of effect of Influence quantity as per IS 14697. (xii) AC, DC and permanent magnet test as per specification clause no.18 (viii to xi) (xiii) Verification of Tamper conditions - as per Annexure-II, top cover open tamper. (xiv) Verification of display parameters - as per Annexure-I (xv) Verification of Viewing angle of LCD (xvi) Physical verification of meter as per specification including sealing as per proto type

sample

28. AUDIT TEST:

Following tests as stipulated in the relevant standards and as per specification shall be carried out at Hi-Tech Meter Laboratory in presence of the supplier on eight samples.

(i) AC high voltage test -As per IS 14697 (ii) Insulation resistance test -As per IS 14697 (iii) Test of limits of errors for active (import & export) (Both Phase & Neutral circuit)

including 0.25 lag and 0.5 lead pf. -As per IS 14697 (iv) Test of meter constant-As per IS 14697 (v) Test of starting condition-As per IS 14697 (vi) Test of no load condition-As per IS 14697 (vii) Repeatability of error test-As per IS 14697 (viii) Test of power consumption in voltage and current circuit -As per IS 14697 (ix) The meter shall record and display total energy including Harmonic energy As per

IEC61053-21 clause No.8.2.1 & Table: 8 (x) Test of effect of Influence quantity as per IS 14697. (xi) AC, DC and permanent magnet test as per specification clause no.15.10 (xii) Verification of Tamper conditions - as per Annexure-II (xiii) Verification of display parameters- as per Annexure-I

29. ROUTIN TEST: All routine tests as stipulated in the relevant standards shall be carried out and routine test-certificates/reports shall be submitted along with inspection call letter in the form of composite disk (CD) and on the CD, A/T No. serial no. of meters to be offered etc. shall be provided with sticker pasted on the CD, to the purchaser for approval and also placed inside individual meter packing. The sealing report for all sealing done by supplier is to attached.

of 33

30. INSPECTION:

The purchaser may carry out the inspection at any stage of manufacturing. The manufacturer shall grant access to the purchase’s representative at a reasonable time when the work is in progress. Inspection and acceptance of any equipment under this specification by the purchaser shall not relieve the supplier of his obligation of furnishing the meters in accordance with the specification and shall not prevent subsequent rejection if the meters are found to be defective. All acceptance tests and inspection shall be made at the place of manufacturer works unless otherwise especially agreed upon by the bidder and purchaser at the time of purchase. The bidder shall offer the inspector representing the purchaser all responsible facilities without charge, to satisfy him that the equipment is being furnished in accordance with this specification. The supplier shall keep the purchaser informed in advance, about the manufacturing program so that arrangement can be made for inspection. In case of non-availability of meter during the visit of inspection of the lot offered, the visit shall be considered as unfruitful visit and all charges of this visit shall be deducted from the bill of the supplier. The purchaser reserves the right to carry out type tests of any meter selected from the lot/meter received at stores of UGVCL.

31. QUALITY ASSURANCE PLAN:

The bidder shall invariably furnish the following information along with his bid, failing which his bid shall be liable for rejection. Information shall be separately given for individual type of material offered.

i. The structure of organization. ii. The duties and responsibilities assigned to staff ensuring quality of work.

iii. The system of purchasing, taking delivery and verification of materials. iv. The system of ensuring quality of workmanship. v. The quality assurance arrangement shall confirm to relevant requirements of ISO:

9001/9002 as applicable. vi. 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 tests normally carried out on raw materials in presence of Bidder’s representative, copies of test certificates etc.

vii. Information and copies of test certificates as above in receipt of bought out accessories. viii. List of manufacturing facilities available.

ix. Level of automation achieved and lists of area where manual processing exists.

of 33

x. List of area in manufacturing process, where stage inspections are normally carried out for quality control and details of such tests and inspections.

xi. List of testing equipment available with the bidder for final testing equipment specified and test plant limitation. If any vis-a-vis the type, special acceptance and routine tests specified in the relevant standards, these limitations shall be very clearly brought out in schedule of deviations from specified test requirements.

32. BIS LICENSE:

The offered meter shall be ISI marked and bidder shall have to furnish valid BIS license for 10-60 A meters along with the offer. Manufacturer having ISO: 9001/9002 shall be preferred

33. GUARANTEE PERIOD:

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 delivery whichever is earlier. The meters found defective within above guarantee period shall be replaced/ repaired by the supplier free of cost. After intimation from the any UGVCL offices regarding collection of defective meters, same are to be collected within fifteen days invariably. If defective meters are not replaced/repaired within one month from the date of the receipt of the intimation, UGVCL shall recover an equivalent amount of meter plus 15% supervision charges from any of the bills

34. PACKAGING:

The meters shall be suitably packed in order to avoid damage or disturbance 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. User manual to be provided with each master cartoon. Hard copy of Routine test certificate is to be provided with individual meter.

35. SERVICES:

The bidder shall provide following services:

i) Services free of cost during guarantee period. ii) To train UGVCL staff for installation and handling of these meters. iii) To assist UGVCL lab staff to install, calibration, checking etc. iv) To assist the UGVCL staff for taking MRI reading, theft wrapped meter analysis etc. At

free of cost. v) To assist the UGVCL staff for installing, using and operation of software

of 33

36. ANNEXURE -I:

MODEWISE LIST OF PARAMETERS TO BE DISPLAYED ON STATIC TVM There should be Three Modes for displaying parameters. MODE – 1 Mode-1 Should be displayed in auto mode as well as push button. Up and Down facility is required for viewing display parameter.

Sequence Name of Parameters 1. Meter Sr. No. 2. R-Phase Voltages 3. Y-Phase Voltages 4. B-Phase Voltages 5. R-Phase Current WITH direction 6. Y-Phase Current WITH direction 7. B-Phase Current WITH direction 8. Frequency 9. Voltage and current phase sequence 10. Instantaneous PF (resultant of all the three phase) 11. Instantaneous KW (Total of all the three phase) WITH sign 12. RTC – Date, day and Time. 13. Rising demand in KW with elapse time 14. Cumm. TOTAL IMPORT KWH 15. Cumm. TOTAL EXPORT KWH 16. Cumm. KVARH (lag) (With respect to import KWH) 17. Cumm. KVARH (lag) (With respect to export KWH) 18. Cumm. KVAH import 19. Cumm. KVAH export. 20. Cumm Total Import KWH Time Zone 1 i.e Peak hours 21. Cumm Total Import KWH Time Zone 2 i.e Night hours 22. Cumm Total Import KWH Time Zone 3 i.e Remaining hours 23. MD Import KW for present billing period 24. Present MD in Import KW for Time Zone 1 i.e Peak Hours 25. Present MD in Import KW for Time Zone 2 i.e Night hours 26. Present MD in Import KW for Time Zone 3 i.e Remaining hours 27. MD Import KW for last billing period 28. Billing MD in Import KW for Time Zone 1 i.e Peak Hours 29. Billing MD in Import KW for Time Zone 2 i.e Night hours 30. Billing MD in Import KW for Time Zone 3 i.e Remaining hours 31. MD Export KW for present billing period 32. Present MD in Export KW for Time Zone 1 i.e Peak Hours 33. Present MD in Export KW for Time Zone 2 i.e Night hours 34. Present MD in Export KW for Time Zone 3 i.e Remaining hours 35. MD Export KW for last billing period 36. Billing MD in Export KW for Time Zone 1 i.e Peak Hours 37. Billing MD in Export KW for Time Zone 2 i.e Night hours 38. Billing MD in Export KW for Time Zone 3 i.e Remaining hours 39. Non Solar hour Export kWh 40. Cumulative MD in Import KW 41. No. of Reset count 42. No. of Total tamper count

of 33

43. Cumulative Programming count 44 Anomaly / circuit check in meter display 45. CT RATIO 46. Display check

NOTE: Following readings are repeated after every parameters in Auto Mode Only

Cumm. TOTAL IMPORT KWH Cumm. TOTAL EXPORT KWH Cumm. Kvarh Lag(Quadrant 1)(Q1) Cumulative MD in Import KW

MODE – 2 Mode-2 is with Push Button Mode

1 Average power factor for last billing period 2 Instantaneous load in KVA 3 Instantaneous load in KVAR 4 Total Voltage failure tamper count (Phase wise) 5 Total Current failure tamper count (Phase wise) 6 Total Voltage unbalance tamper count 7 Total Current unbalance tamper count 8 Total High Voltage count 9 Total Low Voltage count 10 Total neutral disturbance count 11 Total magnet tamper count

MODE – 3 Separate High Resolution registers for testing purpose. Mode-3 is with Push Button Mode Sequence Name of Parameters 1 High Resolution display for KWH(Import)(12.34567) 2 High Resolution display for KWH (Export) (12.34567) 3 High Resolution display for KVARH-Lag(12.34567) 4 High Resolution display for KVAH(12.34567)

Note: - 1. In the meter display especially for the consumption of time zone the peak, night and rest word may

please be incorporate with the display. 2. Push button for up and dawn scroll should be provided and all buttons should clearly marked its

function. 3. Any parameter can be locked for 15 Minutes, after that scrolling of auto mode will be start

of 33

37. ANNEXURE -II:

Tamper Logic & threshold values for 3 Ph. 4 Wire 10-60 Amp whole current static energy meters

Sr. No.

Type of Tamper

Requirement

Tamper Logics / Conditions & (Occurrence & Restoration) Persistence Time

Occurrence Restoration

Voltage Current Persist Time

Voltage Current Persist Time

1 Missing Potential

Phase wise

Vx< 40% of Vref irrespective to any other phase voltage

Ix > 10% of Ib

15 Minut

es

Vx> 75% vref i.e. 180

V irrespective to any other

phase voltage

5 Minutes

2 Current open

Phase wise

All voltages > 75 % of Vref.

Ir or Iy or Ib< 2% of actual max.

current and any one phase has value >

10% lb

15

Minutes

lr or Iy or Ib> 2% of

actual max. current and

any one phase has value > 10% lb

5 Minutes

3 Voltage

Unbalance

-

(Vmax - Vmin) > 10% of max

Voltage of 3 phase voltages and all

voltages > 60% of Vref .

Ix > 10% of Ib For at least any one

phase

15 Minut

es

(Vmax-Vmin )

<10% of max

voltage of 3 phase

voltages

5 Minutes

4 Current

Unbalance

- All voltages > 75 % of Vref.

(Diff. of Actual Max current &

Actual Min current ) > 30 % of Actual maximum current and all phase has value greater than

10% Ib

15

Minutes

(Diff. of Actual Max current &

Actual Min current ) <

30 % of Actual

maximum current

5 Minutes

5 Magnetic Influence

- as per clause no.

19.5 of the specification

When magnet influence start affecting the

accuracy, meter should start

recording at 100% Imax, UPF in

Import Mode only

1

Minute

When magnet

influence stop

affecting the

accuracy, meter

should start recording at actual load

1

Minute

6 Neutral Disturban

- By injection in neutral, Phase to

Ix > 10% of Ib 5 Minut

Phase to Neutral

5 Minutes

of 33

ce Neutral voltage for any two phases is > 350 volts and

for remaining phase is < 50V.

es voltage for all the 3 phases >

75 % Vrefi.e 180

volts

7 Low Voltage

- Vx> 40% of

Vref&Vx< 75 % of Vref


phase

5 Minut

es Vx> 75 %

of Vref 5 Minutes

8 High Voltage

- Vx> 115% of Vref


phase

5 Minut

es

Vx< 110% Vref ( 264

V) 5 Minutes

9 Current Bypass

- All voltages > 75 % of Vref.

Meter is connected to a 3 phase 4 wire system. VectoriallyIr+Iy+Ib+In> 10% Ib, and Ir&Iy&Ib> 2% Ib

5

Minutes

Vectorially

Ir+Iy+Ib+In< 10% Ib

5 Minutes

10

Top cover open. -

At occurrence of Top Cover Open tamper, meter display shall show “Cover Open” permanently in auto modeduring power ON and OFF both conditions. No display parameter should scroll in auto mode. However meter shall continue to record energy and display parameter shall available in push button mode.

Immediately No

restoration

1. During Neutral disturbance tamper, all voltage related tampers (i.e. Voltage Failure, Voltage Unbalance, High Voltage & Low Voltage) shall not be logged.

2. During High Voltage & Low Voltage tampers, Voltage unbalance tamper shall not be logged. 3. During Voltage failure Tamper, Voltage Unbalance & Low Voltage tamper shall not be logged. 4. During current failure Tamper and Current Bypass Tamper, Current Unbalance tampers shall not be logged. 5. During current bypass Tamper, Current fail Tamper and Current Unbalance tampers shall not be logged. 6. During power failure duration, if any tampers persisting, those tampers shall not get recovered until it meets

the logic for restoration and duration of respective tamper shall be from occurrence of that tamper irrespective of power failure duration.

7. For tamper events logging, snap shot data i.e. instantaneous parameters, active energy register reading (Total kwh) and date & time should be corresponds to starting of occurrence and starting of restoration.

8. Snap shot of date and time should be available for occurrences and restorations of events.

of 33

38. ANNEXURE III: SECURITY SEAL

In addition to 2 Nos. of polycarbonate seals, further 2 Nos. of tamper proof void seals are to be provided on the Meter body in such a way that both the side covers shall be sealed by the tamper proof void seals. The tamper proof void seals to be provided on Meters shall be as per the following specification:

[1] Size of the seal -- 3 x 1 inches.

[2] The seal should be digitally printed on white VOID film having UV destructive inks printed with thermal resin ribbon technology.

[3] The seal should be water proof and should withstand all the weather conditions. The seal should have adhesive of sufficient strength to avoid peeling off under extreme tamperature and environmental conditions.

[4]The seal should be sticker type seal and applied on both the side of the Meter which connects the body and the box.

[5]If some one lifts the seal, “VOID” impression should be transferred on the meter and if this is applied back, “VOID” impression should be readable from the surface of the seal.

[6]The disturbed portion of the seal should glow under UV light if the seal is disturbed from any part.

[7]Barcodes of serial numbers should be printed on the seals and the barcodes should be readable with a barcode scanner.

[8]The seals should have continuous variable serial numbers along with security codes of last three digits of serial numbers printed in black and the same serial numbers along with code of serial numbers shall also be printed in a vertical semi circular shape which should be visible only under Ultra-violet (UV) light.

[9]Two security cuts should be given on the seal on both the sides, and if some one tries to lift the seal it should tear off from the security cuts. The security cuts should be made with a computer controlled plotter which should put the security cuts on the same position on each seal.

[10]The name of the supplier and supplier logo along with the security warning or any other information in any language as given by the company should be printed on the sea.

[11]There should be a provision of incorporating officers’ signature on the seal as given by the company.

[12]If some one tries to remove the seal by allying heat, the printing should get disturbed and the shape of the seal should change if more heat is applied.

The seals to be used for sealing of Meters are to be fixed after inspection is over.

Table of Contents · 2019-09-13 · requirement given in this specification which is based on...

Documents

Transcript of Table of Contents · 2019-09-13 · requirement given in this specification which is based on...