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Specification - Jaipur Vidyut Vitran Nigam Limited ,Government of

1. The BCS should be executable on MS WINDOWS 95 98 2000 XP VISTA or higher operating system The BCS shall be suitable to run on IBM PC or compatible hardware platform b Meter Data Display i The BCS should show electrical conditions existing at the time of reading the meter in tabular forms as well as in graphical format Phasor diagram ii All the information about energy maximum demand and their respective TOD register readings billing register readings and billing history readings should be shown in a manner which user can understand quickly preferably in tabular format iii All the load survey data should be available in numerical as well as graphical format It should also be possible to view this data in daily weekly and monthly formats The load survey graph should show values where the cursor pointer is placed for the selected or all parameters 2251 Spec HT TVM 11 iv All the information about tamper events should be accompanied with date and time stamping along with the snap shots details of the respective electrical conditions This information should be displayed in the sequence in which it happened in cumulative format as well as in summary format The cumulative format should segregate a particular tamper Information and summary report shall show count of tamper occurrence and the duration for which meter has remained under tamper condition v The BCS should be capable of preparing a available make
2. 13 Whether meter is capable of performing complete self diagnostic check to ensure integrity of data memory location all the time Explain how Yes NVM fail flag shall be available at BCS 14 vii Whether meter is capable of detecting following common ways of tampering Missing Potential Neutral disturbance Current ckt polarity reversal CT short Bypass Open Current unbalance Magnetic Influence Cover Open tamper Yes Yes Yes Yes Yes if unbalance is greater than 30 Yes Yes 15 i Whether meter functions even if anyone phase is not available Whether meter functions even if the spurious Yes The meter should functions as long as any two wires are connected to the meter terminals Yes the meter functions even if the spurious signals are injected on the 2251 Spec HT TVM 2332 ii signals are injected on the neutral of the meter such as DC signals through diodes etc neutral of the meter such as DC signals through diodes etc 16 Whether snap shots numerical values of voltage current Power factor amp energy KWH reading at the time of logging and restoration any tamper event are available at the BCS end to analyze the recorded tamper events Yes Snap shots of individual voltages currents power factors active energy at the time of tamper logging shall be available at BCS 17 Minimum number of tampers events w
3. Yes Yes Yes Yes Yes Meter can be read in condition of total power failure through external battery pack Yes shall be available at BCS end Yes Yes Yes Yes Yes required 2251 Spec HT TVM 236 tender offer If Yes give detail such as Serial No type etc 26 Principle of operation of the meter outlining the method and stages of computation of various parameters starting from input voltage and current It shall be supplier specific Details shall be mentioned signals including the sampling rate application 27 Method adopted to Details shall be mentioned transform voltage and current to the desired low values with explanation on devices used such as CT PT or potential divider as to how they can be considered superior in maintaining ratio and phase angle for variation of influence quantities and during its service period 28 Detail of memory used in the meter if applicable should be furnished by the manufacturer Non volatile memory suitable to meet requirement of this offer 29 Details of programmable parameters facilities under the following i categories All the feature s available in meter are Factory Programmable Factory Programmable except user programmable features Following are user programmable ii a Real Time Clock Date and Time User Programmable b Demand Integration Period c Profile capture Period d Single action
4. 25 Miscellaneous a Is the meter independent Yes of phase sequence i e can the meter record correctly even if the phase sequence of 2251 Spec HT TVM 35 b c d e g h j k iv l supply is changed Is the meter capable of recording correctly under low load conditions If so up to what of full load Is the resetting of demand and read facility dependent on availability of main power supply Whether Meter software residing in the meter is suitable for communication with HHU confirming to CBIP Technical Report No 111 Whether meter reading count increase by one number every time the meter is read successfully Whether meter is capable to withstand phase to phase voltage between any phase amp neutral Whether meter terminal cover is of extend type and transparent What type of indication provided for ascertaining healthiness of individual phases Whether meter continues to operate satisfactorily in absence on neutral What arrangement does the meter have for transferring data to HHU amp reading parameter on display in condition of total power failure Whether snap shot for following parameter are available at the time of registration of occurrence restorations of any tamper Voltage Current Power factor Energy reading kWh I Whether sample of offered meter has been furnished along with As per relevant standard Yes
5. For category C meter load survey parameter shall be current IR current IY Current IB block energy KWh and block energy KVAh Load survey period shall be 45 days with 30 minutes integration period Meter Serial Nos should be printed in each page of load survey sheet The BCS parameters should not be editable The programmable parameters shall be as per table No 31 of IS ETD 13 6211 2251 Spec HT TVM RE 3 26 HARMONICS MEASUREMENTS The accuracy of the meter shall not be affected by harmonics circulating in the system of magnitudes within permissible limits stipulated in relevant ISS IEC CBIP Standards and CEA Regulations 2004 The meter shall display Total Energies as per IS ETD 13 6211 2010 and same shall be logged in meter memory and be capable to download at BCS end through HHU 3 27 TAMPER AND FRAUD PROTECTION The meter shall atleast be immune to tampers elaborated in IS 14697 Annexure G 10 The meter should have features to detect the occurrence and restoration of at least the following common ways of tamper and fraud a Missing Potential The meter shall be capable of detecting and recording phase wise occurrences and restoration events of missing potential one phase or two phases as on meter terminals which can happen due to intentional accidental disconnection of potential links leads with date and time along with the total number of such events for all phases Absence of one or more phase volta
6. b Basic current 5 Amps c Maximum continuous 10 Amps current d Power supply variation Offered meters are capable to work Whether meter is satisfactorily under following range suitable for working with following supply system 0 8 to 1 15 V of Vref i variation 0 7 to 1 2 V of Vref ii Specified operating range 50 5 Hz Ref freq 50Hz iii Limit range operation Frequency range e Power factor range 0 lag unity 0 lead f Ambient temperature 5 C to 60 C range g Whether meter base and cover are ultrasonically welded h Material used for meter i housing Engineering plastic material will be ii Meter Base used for meter base cover terminal iii Meter cover block housing and terminal block iv Terminal Block Housing cover Terminal block cover will be 2251 Spec HT TVM 29 i Whether components on All components on the PCB will be of the PCB are surface SMT type mounted j Whether all parts that Yes protected with conformal coating are likely to develop on electronic component corrosion are effectively protected against corrosion if so name the type of treatment for this purpose k Whether sealing Following type of sealing arrangement arrangement provided on will be provided for offered meters front side of meter for Arrangement of two seals can be following sealed by purchaser o
7. To facilitate sealing a raised support arrangement with minimum 2 mm hole nearby sealing screws which shall constitute an integral part of the terminal cover or a slot type arrangement underneath alongside the sealing screw shall be provided xiv The termination of current circuit wires inside the meter i e CT primary conductor on the terminal block shall be through lugs and washers of proper size The loop length of the primary current circuit should be kept minimum Alternatively the CT primary conductor may be flattened to form a lug like shape for proper termination on terminal block without using lug or any other better arrangement may also be provided 2251 Spec HT TVM 8 xv The meter shall have minimum three fixing holes one at the top and other two inside the terminal block The top hole shall be key hole type on the back of the meter base so that the hanging screw is not accessible after fixing of the meter and it shall not be possible to remove the meter from the hanging screw without removing the terminal cover and screw s from the terminal block Any alternate better arrangement shall also be considered for acceptance The lower fixing holes shall be provided under the extended terminal cover A set of fixing screws shall be supplied with each meter xvi Extended terminal block cover shall be provided to ensure that the internal parts are not accessible for tampering etc without breaking the seals The ETBC shall be ex
8. arrangements fitting details electrical connections etc ii Technical leaflets User s Manual giving operating instructions for the meter The manufacturing of the equipment shall be strictly in accordance with the approved drawings and no deviation shall be permitted without the written approval of the purchaser All manufacturing and fabrication work in connection with the equipment prior to the approval of the drawing shall be at the supplier s risk Approval of drawings work by purchaser shall not relieve the supplier of his responsibility and liability for ensuring correctness and correct interpretation of the drawings for meeting the requirements of the latest revision of application standards rules and codes of practices The equipment shall conform in all respects to high standards of engineering design workmanship and latest revisions of relevant standards at the time of ordering and purchaser shall have the power to reject any work or materials which in his judgment is not in full accordance therewith The successful Bidder shall within 2 weeks of placement of order submit three sets of final versions of all the drawings as stipulated in the purchase order for purchaser s approval The purchaser shall communicate his comments approval on the drawings to the supplier within two weeks The supplier shall if necessary modify the drawings and resubmit three copies of the modified drawings for their approval The supplier shall wit
9. every meter tested b Manufacturer should have duly calibrated Electronic Reference Standard ERS meter of class 0 05 accuracy or better Where testing facilities do not exist at the Supplier s 2251 Spec HT TVM 20 Works for Shock and Vibration Testing as per the relevant standards these two tests may be carried out in accordance with the provisions of IS 13010 with latest amendments 3 36 TESTS The test reports certificate records for all type tests specified having been successfully performed on the type of the meter offered shall be submitted with the tender The bidder shall clearly bring out the deviations from this specification clause whether on account of tests or manufacturing process or features incorporated in the meter The tender lacking with above information and without supporting test reports for meter meeting the requirement of tests laid in this specification are likely to be rejected a Type tests The Energy meter compatible with DLMS protocol offered shall be fully type tested at any NABL accredited test laboratories as per relevant standards The bidder shall furnish two sets of type test reports along with the bid Type test reports shall not be more than two years old from the date of opening of bid Beside above bidder should also submit the test report from CPRI Banglore along with the bid for the latest version of the Indian standard on data exchange for electricity meter reading tariff and load cont
10. months of tropical 4 months monsoon condition 8 Maximum attitude above mean sea 1000 meters level 9 Average annual rain fall 10 100 cm 10 Maximum wind pressure 200 kg sq m 3 Colour of Seal show clear indication if tampered 4 Design and Construction of Seal a Design The seal shall be Double Anchor Push Fit type tamper evident with double locking There shall not be any change in size shape or design of the If the seal is found different than the approved design shape size the same shall be out rightly rejected The double anchor should not be so soft that it can be easily pressed before sealing seal than the approved samples so that after pressing the seal can not be opened The female portion of the Polycarbonate Seal s shall be available in Clear Red Green colour and should be transparent see through type which shall give complete visualization of its fixing mechanism and shall b Thickness The wall thickness of seal should be minimum one 1 mm 2251 Spec HT TVM 41 c Serial No of the Seal Serial No of the Seal shall be as per Meter serial No and shall be laser etched embossed during moulding it shall not be screen printed in contrast colour on one side of capsule body female The Sr No shall also be laser etched embossed on top of the male part The laser etched printing shall be through complete thickness of the polycarbonate d Monogram The seal shall have emb
11. routine test certificates directly in the office of the Superintending Engineer M amp P JVVNL Jaipur one day prior from the date of opening of Tender If the sample s are not received the bid shall be considered as Non responsive In case sample meter submitted with bid don t conform the Type tests Addl Type Tests and Tamper tests of specifications IS the financial bid of offer shall not be opened Sample s meter shall be broken to verify components of the meter One sample of HT TVM of 0 5S class of each category along with HHU meeting the requirements of this specification should be furnished along with bid for checking and testing in our Meter Testing Laboratory at Jaipur in presence of bidders representative or at independent test laboratory at the discretion of purchaser After finalization of the tender the bidder s will collect their sample s so submitted otherwise department does not hold itself responsible for safe custody of sample s so received The offer received without sample s is liable to be ignored The meter cover shall be ultrasonically welded with the meter base The sample meter to be sent along with bid may not be ultrasonically welded with the meter base as at the time of sample testing it has to be opened to ascertain conformity of meter as per specification However before commencement of supply sample has to be got approved with ultrasonically welded meter by the successful bidder The meter sample should b
12. schedule for Billing Dates e Activity Calendar for Time Zones etc 30 Whether meter cover is i Sample with offer Not required US ultrasonically welded with meter base welded ii Sample before commencement and supplies against PO required US welded ANNEXURE H COMPONENT SPECIFICATION S Component Requirement Makes 8 Origin 2251 Spec HT TVM SB No 1 Current E beam spot welded shunts shall Any make or origin Element be provided in the phase conforming to IS 2705 element and C T in the neutral and other make i e Alternatively both the current Redbourn Engg Isabelle elements phase amp neutral shall have shunts with proper insulation The meters should be with the current transformers shunt as measuring elements 2 Measurement of The measurement or computing Analog Devices Cyrus computing chips used in the meter should Logic AMS Atmel chips be with the surface mount type Phillips along with the ASICs SAMES NEC Texas Instruments 3 Memory Chips The memory chips should not be Atmel National affected by the external Semiconductors parameters like sparking high Microchip Texas voltage spikes or electrostatic Instruments Phillips ST discharges Hitachi or Oki Teridian 4 Display modules a The display modules should Genda Haijing Holtek be well protected from the Bonafied
13. without damage deformation In short if the seal is tested for any of the above tests in no condition the male and female part shall be separated out without affecting damaging the seal In case if they are separated the seal shall have sufficient tamper evident Also if seal wire is pulled out from the seal in any of the above tests it shall not come out from the seal without damaging seal 2251 Spec HT TVM 43 SCHEDULE A GUARANTEED TECHNICAL PARTICULARS FOR DOUBLE ANCHOR TAMPER EVIDENT TRANSPARENT POLYCARBONATE SEALS AGAINST TN 2251 S PARTICULARS TO BE FURNISHED BY BIDDER NO 1 NAME amp ADDRESS OF MANUFACTURER 2 WORK S ADDRESS 3 RAW MATERIAL OF POLYCARBONATE SEALS 4 PROPERTIES OF MATERIAL i USE ii SOFTNESS iii DURABILITY iv TRANSPARENCY 5 COLOUR OF THE SEALS 6 WHETHER DESIGN 8 CONSTRUCTION OF SEAL IS AS PER SPECIFICATION GIVE DETAILS 7 THICKNESS OF SEAL 8 WHETHER ETCHING EMBOSSING OF SERIAL NO IS AS PER SPECIFICATION GIVE DETAILS 9 HETHER PRINTING OF MONOGRAM IS AS PER SPECIFICATION 10 MAX WITHSTAND TEMPERATURE UPTO 147DEG C 11 WHETHER SEAL HAVE FOLLOWING PROVISIONS a TAMPER RESISTANT AND RELIABLE b ENVIRONMENTALLY SAFE AS IT DOES NOT CONTAIN ANY LEAD c WITHSTAND LONG TERM EXPOSURE TO DIRECT SUNLIGHT d REQUIRED NO TOOLS FOR INSTALLATION e TRANSPARENT f HEAT RESISTANC
14. 0 amp for Load lt 10 to be provided Yes it shall be possible to conduct accuracy test at lower load within its limits Whether provided galvanically communication meter iS with a isolated port Yes galvanically isolated communication port is to be provided for reading data through CMRI and through external modem over 2251 Spec HT TVM safe suitable for data transfer through either CMRI or a remote device or both telephone line 7 Memory a Type Non volatile or Non volatile memory battery backed b Non volatile memory Minimum 10 Years retention time in absence of power 8 Whether meter remains Yes meter will remain powered up in powered up condition as long any two live wires are in the event of non connected to the meter including availability of any one of Neutral or Not three potential and or neutral i e with any two potentials and neutral 9 Maximum demand registration amp load survey capability i Integration period for 30 minutes block integration period maximum demand in Real Time basis ii KVA Basis of integration period calculation real For catagory A meter load iii time or other explain survey parameter shall be Whether load survey current IR _ Current IY for minimum 45 days Cyrrent IB block energy KWh with aai Cira koe and block energy KVAh Load 8 50 days p A survey period shall be 4
15. 1 Spec HT TVM sfs iv Ball pressure test at 125 deg C b The terminal block the ETBC and the meter case shall ensure reasonable safety against the spread of fire and shall not be ignited by the thermic overload of live parts in contact with them c The current circuit conductors of a meter shall be connected to its current terminals inside the meter terminal block adopting procedure prescribed either B 1 or B 2 of the recommended methods under Clause 6 4 Annexure B of IS 14697 Any other method which meets this requirement in a better manner way shall also be considered The bidder should elaborate the arrangement adopted d The meter terminal block shall have tin plated brass terminals The terminals shall have suitable construction with barriers and transparent cover to provide firm and safe connections of incoming and out going leads The terminal screws shall have flat bottom so as not to pierce in the external conductors The terminals shall be of suitable rating to carry continuously Imax current and made of electroplated or tinned brass and shall be of replaceable type Any other provision which meets this requirement in a better manner way shall also be considered The bidder should elaborate the procedure adopted e i The manner of fixing the external 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 fo
16. 2251 Spec HT TVM Iis JAIPUR VIDYUT VITRAN NIGAM LIMITED OFFICE OF THE SUPERINTENDING ENGINEER MM OLD POWER HOUSE PREMISES BANI PARK JAIPUR TELEPHONE 0141 2202607 FAX 0141 2202025 SPECIFICATION NO JPD SE MM TN 2251 HT TRIVECTOR METERS WITH DLMS PROTOCOL Last date for receipt of tenders 01 7 2014 upto 5 00 PM Date amp time of tender opening 02 7 2014 at 3 00 PM Cost of Specification Rs 2 500 00 per set Processing Fee Rs 1000 00 per set Validity of tenders required upto 120 days after the date of opening of tender Earnest money to be deposited Rs Two Lac Exemption Certificate or vendor registration of category class A FOR SUPERINTENDING ENGINEER MM IMPORTANT NOTE 1 Earnest Money as per clause No 1 03 of section I of this specification or vendor s registration with JAIPUR DISCOM under category A or above as per clause 1 5 3 of GCC and cost of Bid document as per clause No 1 02 9 of section I Instructions to Bidders 2 The Central and State Govt undertaking shall be exempted from furnishing of earnest money deposit provided that they furnish a certificate documentary evidence in support of their being Govt Central State undertaking 3 The tender enclosing all schedules III to IX duly completed should be furnished as per section I Instructions to Bidders of this specification 4 The technical deviations including GTP and commercial deviations
17. 5 days minutes integration with 30 minutes integration period is provided for Period minimum five parameters for For category C meter load different catagories survey parameter shall be current IR current IY Current iv Whether load survey is IB block energy KWh and block provided in terms of bar energy KVAh Load survey period chart as well as in shall be 45 days with 30 minutes spreadsheet integration period Yes to be provided in the term of bar chart as well as in spreadsheet 10 Whether following Yes to be Provided additional parameters are made available for viewing printing at the BCS end Meter reading count MD reset count 2251 Spec HT TVM 2304 Billing parameters as per IS ETD 13 6211 Number of power failures and cumulative power failure duration 11 Whether meter is capable of registering TOD energy consumption amp apparent demand KVA In built capacity for total time zones How many zones presently defined Is it possible to change time period for TOD zones through BCS with authentic pass word Refer Annexure E Table No 29 of IS ETD 13 6211 Eight TOD registers energy amp demand Yes It shall be Possible through BCS with authentic password 12 ii Whether meter is capable to measure and register Total energy i e fundamental Harmonics energy Whether BP active Reactive and apparent energy are total
18. 6mm t No amp size amp material of screws for each current terminal Two numbers M 4 size of screws u Size of terminal hole for potential terminal Appx 3 0 mm 0 5 mm v No and size and material of screws for each potential terminal Two numbers of M 3 size w Whether earthing terminal provided outside or inside the meter body x Overall dimension of meter with tolerance y Short time current withstands capability As per CBIP report No 304 or IEC 62052 11 2003 Minimum centre to centre distance between adjacent terminals Minimum centre to centre distance between adjacent terminals will be 11 4 mm DISPLAY SEQUENCE A Whether display parameters are available If Yes please also describe method of displays parameters will be displayed as per IS ETD 13 6211 ii iii iv Whether meter is provided with test output accessible from the front of the meter Details of test output device provided for kWh KVARh amp KVAh Necessary number of pulse count s to ensure measurement of accuracy of at least 1 10 of class of meter Whether it is possible to satisfactorily conduct accuracy test at lower load in less than 5 minutes and starting any test in less than 10 minutes Yes to be Provided in the form of a blinking LED To be Provided in the form of single LED for all the three vectors Pulses for Load gt 1
19. E 12 GUARANTEE OF SEAL MIN 2 YRS 13 WHETHER SEAL IS PATENTED amp COPY OF PATENT IS ENCLOSED 14 WHETHER SEAL WIRE IS PROVIDED IN THE SEALS AS PER SPECIFICATION 2251 Spec HT TVM 44
20. G a The equipments 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 dust and moisture and then placed in cushioned carton of a suitable material to prevent damage due to shocks during transit The lid of the cartoon may be suitably sealed A suitable number of sealed cartons may be packed in a case of adequate strength with extra cushioning if considered necessary 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 b The following information shall be furnished with the consignment Name of consignee Details of consignment Destination Total weight of consignment Sign showing upper lower side of the crate Sign showing fragility of the material 2251 Spec HT TVM 295 Handling and unpacking instructions Bill of material indicating contents of each package and spare materials 3 44 DOCUMENTATION All drawings shall conform to International Standards Organization s ISO A series of drawings sheet Indian Standards Specifications IS 656 All drawings shall be in ink and suitable for microfilming All dimensions and data shall be in S I Units List of drawings and documents The bidder shall furnish the following along with bid i Two sets of drawings showing clearly the general
21. Technologies external UV radiations Korea Advantek Truly b The construction of the Semiconductor modules should be such that the Success displayed quantity should not Hitachi Sony disturbed with the life of display c The display should be clearly visible over an angle of at least a cone of 70 c It should be trans reflective FSTN or STN Type industrial grade with extended temperature range 5 Electronic The active amp passive National Components components should be of the Semiconductors Atmel surface mount type and are to Phillips Texas be handled amp soldered by the Instruments Toshiba state of art assembly processes Fairchild Murata Rohm Siemens Hitachi Oki AVX or Ricoh Samsung 6 Battery Lithium with minimum Varta Tedirun Sanyo or guaranteed life of 15 years National Durocell 2251 Spec HT TVM 38 7 RTC amp Micro Controller The accuracy of RTC shall be as per relevant IEC IS Standards Phillips Dallas Atmel Motorola Microchip NEC or Oki 8 P C B resistance minimum Glass Epoxy fire grade FR4 with thickness 1 6 mm 9 Communication modules Communication modules should be compatible for the RS232 ports National Semiconductors Hitachi Texas Instruments Philips HP Agilent 10 Optical port Optical port should be used to transfer the meter data to meter reading instrument The mechanical cons
22. actor to arrive at actual primary values wherever applicable shall be calculated from the CT and PT ratio of the installed CTs and PTs CT ratio of the installed CT s 3 05 POWER FACTOR RANGE The meter shall be suitable for full power factor range from zero lagging through unity to zero leading The meter should work as an active energy import and export and reactive lag and lead energy meter 3 06 POWER SUPPLY VARIATION The supply system shall be 3x110V Phase to Phase 3 phase 4 wires The extreme power supply variations for which an operating meter should withstand without damage and without degradation of its meteorological characterstatics when it is subsequently operated under its normal operating conditions shall be as follows Specified operating range 0 8 to 1 15 V ref Limit range of operation 0 7 to 1 20 V ref Frequency 50 Hz 5 However the bidder can offer meter which can withstand higher variations The limit of power supply variations should be as per IS 14697 1999 3 07 ACCURACY Class of accuracy of the meter shall be 0 5S The accuracy should not drift with time 3 08 POWER CONSUMPTION i Voltage circuit The active and apparent power consumption in each voltage circuit including the power supply of meter at reference voltage reference temperature and reference frequency shall not exceed 1 0 Watt per phase and 8 VA per phase respectively ii Current circuit The apparent power taken by each
23. alities from source side and load side and it should not log record tamper due to source side abnormality There shall be three separate compartments for logging of different types of tampers as follows Compartment No 1 40 of total tamper memory space shall be allocated for the current related tampers Compartment No 2 40 of total tamper memory space shall be allocated for the potential related tampers Compartment No 3 20 of total tamper memory space shall be allocated for the other tampers i e magnetic influence and neutral disturbance related tampers etc Minimum 200 events Occurrence amp restoration as separate event of all types of tampers with date amp time shall be available in the meter memory on first in first out basis 3 29 TAMPER PERSISTENCE TIME The persistence time for logging registration of an occurrence of a tamper should be 5 minutes 10 seconds The persistence time for logging of restoration of tamper should not be more than 60 seconds 2251 Spec HT TVM 19 3 30 ACCURACY REQUIREMENT The accuracy of parameters measured by meters shall be tested in accordance with the relevant standards described in clause 3 02 of this specification For apparent energy accuracy testing shall be done in accordance with the provisions of Annexure G 7 of IS 14697 1999 Time accuracy of the meter should be as per Annexure G 18 of IS 14697 1999 3 31 ELECTRICAL REQUIREMENT The electrical requireme
24. an International Standards and all related Indian International standards to be read with up to date and latest amendments revisions thereof S Standard No Title No IS 14697 1999 Specifications for AC Static Transformer 1 With latest amendments Operated Watt hour and VAR Hour Meters class 0 2S amp 0 5S 2 CBIP technical report No 304 Specification for AC Static Electrical Energy Meters With latest amendments 3 IEC 62053 22 2003 AC Static Watt hour Meters for Active IEC 62052 11 2003 Energy class 0 2S amp 0 5S 4 CBIP Technical Report No 111 Specification for Common Meter Reading Revised July 1996 Instrument 5 IS 9000 Basic Environmental Testing Procedures for Electronic amp Electrical items 6 IEC 62056 DLMS COSEM Open protocol standard for communication of meter datas 7 IS 15707 Testing Evalution Installation and maintenance of AC Electricity meters Code of Practice 8 IS ETD 13 6211 Data Exchange for electricity meter reading tariff and load control companion specification Meters matching with requirements of other national or international standards which ensure equal or better performance than the standards mentioned above shall also be considered When the equipment offered by the tenderer conforms to standards other than those specified above salient points of difference between standards adopted and the standards specified in this specification shall be clearly brought out
25. as no right to contest the test results of the third party lab or for additional tests and has to replace take corrective action at the cost of the supplier It shall be responsibility of the supplier to arrange such test and purchaser shall be inform of the date and time of conduction of tests well in advance to enable him to witness such tests Test charges of the testing authority for such successful type tests shall be borne by the purchaser and in case of unsuccessful type test same shall be borne by the supplier 3 39 QUALITY ASSURANCE PLAN The Bidder shall invariable furnish the following information along with 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 tests normally carried out on raw materials in presence of Bidder s representative and 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 o
26. ated f current Percentage error witht5 variation in frequency i Percentage error with As per applicable standard ii 5 variation in As per applicable standard g frequency at Change of error due to variation in Unity P F voltage A 0 5 Lag P F Change of error due to i variation in voltage As per applicable standard ii At 20 above rated As per applicable standard B voltage unity P F amp Rated current i 10 rated current As per applicable standard iii At 20 below rated As per applicable standard iii voltage unity P F amp As per applicable standard h Rated current 50 rated current 10 rated current As per applicable standard i Change of error due to As per applicable standard ii self heating at rated As per applicable standard iii current and rated voltage As per applicable standard and Unit PF 0 5 lag P F Change of error under influence of external A C and D C magnetic field as per IS and specifications 21 Year since when the design offered is in vogue 22 Reference of certification mark license 23 Is the meter capable of Yes recording correctly both under balance unbalanced load conditions 24 The requisite details and In the absence of power meter can description of facility to be read through an external battery read meter in the pack through inductive coupled absence of power arrangement as per IS
27. cannot be removed undamaged without breaking the cover e The meter cover shall be ultrasonically welded with the meter base The sample meter to be sent along with bid may not be ultrasonically welded with the meter base as at the time of sample testing it has to be opened to ascertain conformity of meter as per specification However before commencement of supply sample has to be got approved with ultrasonically welded meter by the successful bidder xiii Terminal Block a The detachable terminal block shall be moulded type made of non hygroscopic flame retardant material having good dielectric and mechanical strength The moulded terminal block shall be made from best quality phenol formaldehyde or 10 20 glass filled polycarbonate material or any equivalent better material conforming to FH 1 of IS 11731 Part I having adequate insulating properties and mechanical strength with brass inserts for connecting terminals The terminal block should satisfy all the conditions specified in IEC 62052 amp IS 14697 and shall be made from best quality phenol formaldehyde or 10 20 glass filled polycarbonate material or any equivalent better material The glass filled polycarbonate should fulfill the requirement of following tests i The flame retardant rating of VO as per UL94 testing ii The glow wire temperature of 960 deg C as per IS 11000 part 2 Sec 1 or IEC 695 2 1 iii Heat deflection temperature HDT test of 135 deg C 225
28. closed guidelines document It shall be compatible to the DLMS compliant energy meters that are to be procured supplied on the basis of this specification The HHU shall be supplied by the meter manufacturer along with the meter 1 of ordered quantity The successful bidder shall supply HHU as per specification for DLMS TVMs within 30 days after finalization of approved specification F TAMPER amp FRAUD MONITORING FEATURES The meter shall work satisfactorily under presence of various influencing conditions like External Magnetic Field Electromagnetic Field Radio Frequency Interference harmonic Distortion Voltage Frequency Fluctuations and electromagnetic High Frequency Fields etc The meter shall be immune to abnormal voltage frequency generating devices and shall record the occurrence and restoration of such tamper events along with parameters such as current voltages kWh power factor event code date amp time etc Tamper details shall be stored in internal memory for retrieval by authorized personnel through either of the following i HHU ii Remote access through suitable communication network Minimum 200 numbers of events occurrences amp restoration with date amp time should be available in the meter memory 3 21 OUT PUT DEVICE The meter shall have a test output accessible from the front and be capable of being monitored with suitable testing equipment The operation indicator if fitted must be visible f
29. current circuit at basic current reference frequency and reference temperature shall not exceed 1 VA per phase 2251 Spec HT TVM sg 3 09 STARTING CURRENT The meter should start registering the energy at 0 1 Ib and unity power factor 3 10 MAXIMUM CURRENT The rated maximum current of the meter shall be 200 Ib 3 11 GENERAL AND CONSTRUCTIONAL REQUIREMENTS i Meters 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 should be ensured a Personnel safety against electric shock b Personnel safety against effects of excessive temperature c Protection against spread of fire d Protection against penetration of solid objects dust and water e Protection against fraud f Protection against Pilferage ii All the materials and electronic power components used in the manufacture of the meter shall be of highest quality and reputed make to ensure higher reliability longer life and sustained accuracy iii a The manufacturer should use application specific integrated circuit ASIC for metering functions b The meter should not have any form of mechanical adjustment such as trim pots potentiometer etc for calibration The meter shall be factory calibrated and no adjustment of calibration shall be possible at site by any means c The electronic components shall be mounted on the printed circuit board using latest Surface Moun
30. de by purchaser which should be left unsealed Provision shall also be kept for one no seal on terminal cover All the sealing screws shall be captive type so that they cannot be detached when they are in open condition The holes in the head of sealing screw shall be of min 2mm dia The sealing screws for meter base and cover shall be unidirectional and slot less 2 No Two No tamper indicative paper seal s on either side of the meter case shall be provided by the manufacturer For this at least two 2 Nos seals on meter body and provision for one 1 no seal on meter terminal cover and one 1 no seal on communication port shall be provided For the above sealing arrangement for the purchaser the manufacturer shall provide at least one seal on the meter body at the factory after calibration and testing Provision for all the seals should be provided on front side only Rear side sealing arrangement will not be accepted The Suppliers in their offer should explain the sealing arrangement 3 14 MARKING OF METER The meter terminal marking and mounting arrangement should be as per Indian installation practices The marking on every meter shall be in accordance with Table 30 of ETD13 6211 Every meter shall have nameplate beneath the meter cover such that the nameplate cannot be accessed without opening the meter cover and without breaking the seals of the meter cover and the nameplate shall be marked indelibly The nameplate marking sho
31. ding count should increase by one digit every time the meter is read successfully through HHU or computer or any other device and be available at BCS end The count shall not increase through HHU operations as instantaneous parameters view and other similar HHU operations which do not download any data from meter memory xi Cumulative Programmable Count Meter should be capable to display the Cumulative Programmable Count This count should increase by one digit whenever there is any programmed or meter data change in the meter through HHU or computer or any other device and be available at BCS end as well as on meter display This count should not increment on any data read only communication xii The meter shall be capable of detecting condition of power off if mains supply is not present It shall record such occurrence and restoration of power failures as separate events in the meter memory with date and time stamp Snapshot of electrical parameters is not necessary during this condition xiii The meter shall have provision to be read in the absence of power through an external internal source as per provision of Annex G14 of IS 14697 1999 such that it should not be possible to damage the internal circuitry of the meter by applying any voltage on through the device port provided for powering up the meter in the absence of power supply The bidder should explain the method adopted by them for this purpose in their offer Minimum 20 such eve
32. e 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 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 requirements of this specification are followed by the sub contractors The Quality Assurance programme of the contractor shall consist of the quality systems and quality plans with the following details i Quality System 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 materials 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 programmed sequence The structure of the contractor s organization for the contract The duties and responsibilities assigned to staff ensuring quality of work Hold and Notif
33. e sealed with the bidder s seal s The details of logic and threshold values for various kinds of tampers as proposed and incorporated by the bidder in their meter samples shall be furnished along with the meter sample s Tests to be conducted i Starting condition test ii Power consumption test iii Repeatability of error test iv Accuracy requirements v Voltage Variation Test 30 to 20 vi Tamper and fraud protection test Tests to prove compliance to this specification vii A C and D C Magnetic Immunity test 3 38 2 FURNISHING OF PRE COMMENCEMENT SAMPLES a The successful bidder shall furnish one nos pre commencement samples of each type of offered tri vector meters fully meeting the requirement of specification directly in the office of the Superintending Engineer M amp P JVVNL Jaipur within one month from the date of receipt of Purchase Order for Nigam s approval The samples shall be tested at Nigam s own lab or CPRI NABL accredited lab at the discretion of the purchaser The testing charges in case samples are send to third party lab shall be borne by the supplier The bidder shall supply the meters only after approval of pre commencement of sample 2251 Spec HT TVM 22 b The purchaser shall reserve the right to pick up energy meter at random from the lot s offered and get the meter tested at third party lab i e CPRI NABL accredited lab at the sole discretion of the purchaser The supplier h
34. equired in HT TVMS of Category C for consumer Metering i 05 00 Hours to 06 00 Hours ii 06 00 Hours to 09 00 Hours iii 09 00 Hours to 18 00 Hours iv 18 00 Hours to 23 00 Hours v 23 00 Hours to 05 00 Hours ii Configuration change activity programming should be enabled at BCS under multilevel password protected security system for specified selected meter s identified by the meter serial number s Configuration change activity can only be possible after written consent of SE M amp P JVVNL Jaipur and a password available with SE M amp P Jaipur is to be entered first for enabling any configuration change activity Without entering the password provided by SE M amp P Jaipur configuration change activity shall not at all possible Such configuration change in the meter shall be immediately preceded automatically by meter data reading such that entire meter data prior to change is downloaded from the meter before the change is effected in the meter Details of minimum 10 such change s event s made in the meter shall be logged in the meter memory each with date and time stamp and shall be capable of downloading through HHU and shall be available for viewing at the BCS end The logging shall be roll over type on first in first out basis iii 7he meter data should download with the speed of 9600BPS Any future up gradation made by the supplier in any of the above softwares shall also be provided free of cost a Platform
35. ergy kVArh as per details given in the table below and enclosed annexure In addition to above the meter shall also record the Name plate details programmable parameters readable as profile occurrence and restoration of tamper events along with the parameters as per Clause No 3 28 of this Specification Detail of category wise parameters requirement suitable for specific location such as feeder DT metering interface points boundary points is given in following tables of 2251 Spec HT TVM 14 guidelines document enclosed as annexure as per IS ETD 13 6211 2010 Category Metering Parameter group Annexure Table Nomenclature Purpose No of IS ETD 13 6211 2010 A Substation Feeder Instantaneous parameters C 22 Distribution Auto scroll and push button Transformer meter mode Block Load Profile c 23 parameters B Boundary Ring Instantaneous parameters D 24 fencing Interface Auto scroll and push button Meters mode Block Load Profile D 25 Daily Load Profile D 26 c HT Consumer Meters Instantaneous parameters E 27 Auto scroll and push button mode Block Load Profile E 28 Billing Profile parameters E 29 A B amp C Substation Feeder Name Plate details F 30 Distribution Programmable Parameters F 31 Transformer Boundary Event Conditions G 32 Ring 33 34 35 36 378 A B amp C Logging parameters for Capture parameters for G 39 each of the event event conditio
36. eter cover The register shall be able to record and display starting from zero for a minimum of 1500 hours the energy corresponding to rated maximum current at reference voltage and unity power factor The register should not roll over in between this duration 3 19 METER SERIAL NUMBER In addition to providing serial number of the meter on the display plate the meter serial number shall also be programmed into meter memory for identification through HHU meter reading print out 3 20 DISPLAY SEQUENCE The meter shall display the required parameters as per Table No 22 amp 27 of IS ETD 13 6211 2010 for category A amp C respectively A QUANTITIES TO BE MEASURED amp DISPLAYED The meter shall be capable of measuring and displaying the following electrical quantities within specified accuracy limits for poly phase balanced or unbalanced loads a Instantaneous Parameters as per IS ETD13 6211 such as phase and line voltages currents power factors overall kVA kW kVAr power factor frequency etc as per details given in the table below and enclosed annexure b Block Load Profile Parameters such as kVAh kWh kVArh lag lead Maximum Demand MD in kW kVA power factor phase and line voltages currents etc minimum 5 parameters as per details given in the table below and enclosed annexure c Daily Load Profile Parameters such as cumulative energy kWh import export cumulative kVAh while kW import export cumulative en
37. f testing equipment available with the bidder for final testing of equipment specified and test plant limitations if any vis a vis the type special acceptance and routine tests specified in the relevant standards and this specification These limitations shall be very clearly brought out in a separate schedule of deviations from specified test requirements 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 along with offers ii Type test certificates of the raw materials and bought our accessories if required by the purchaser iii Quality assurance plan QAP with hold points for purchaser s inspection The quality assurance plan and purchasers hold points shall be discussed between the purchaser and bidder before the QAP is finalized 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 or organizations The purchaser s written approval is required to authorize work to progress beyond the hold points indicated in quality assurance plans 2251 Spec HT TVM 23 ii Notification Point A stage in the material procurement or workmanship process for which advance notice of th
38. ge from mains side should not be recorded as missing potential b Neutral Disturbance The meter shall be capable of detecting occurrences and restoration of injection of spurious signals on the neutral of the meter such as DC signals through diodes etc which affect the meter functionality and energy recording c Current Reversal The meter shall be capable of detecting and recording phase wise occurrences and restoration of current reversal of one or more phases d Current Circuit Open Failure The meter shall be capable of detecting and recording occurrences and restoration of opening failure of any one or two phases of current circuit when the meter is connected to a 3 phase 4 wire system or 3 phase 3 wire system The No load condition should not be recorded as tamper e Current Unbalance The meter shall be capable of detecting and recording occurrences and restoration of current unbalance as a tamper event only The threshold values for voltage current and power factor etc for the purpose of logging occurrence and restoration of various type of tamper shall be as per Annexure A f Magnetic Influences The meter should record the presence of abnormal external magnetic fields alongwith date and time Snapshots 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 of all tamper events subject to meter memory space as described he
39. have phase indicators to indicate the status of phase voltages which shall keep coming with every display iii The meter should work accurately irrespective of phase sequence of the mains supply iv It should be possible to check the correctness of connections of CT and PT to the meter with proper polarity This shall be made available on HHU by displaying phasor diagram For this purpose a suitable software for field diagnosis of meter connections with the help of meter and HHU should be supplied as per Annex G15 of IS 14697 1999 2251 Spec HT TVM 24125 v The meter should remain powered up and functional even when either of any two phases or any one phase alongwith neutral is available to the meter vi The meter should continue to record accurately as per prevailing electrical conditions even if the neutral of potential supply gets disconnected vii The meter shall either remain immune to tamper using permanent magnetic field of 0 27 Tesla or if the metering gets affected then meter shall record energy at Imax rated voltage and unity P F as per CBIP 304 and also logged the same as event viii Meter shall have Scroll Lock facility to display any one desired parameter continuously from display parameters which will keep on displaying till the lock is released ix The meter should continue to function even if any spurious signals are injected on the neutral of the meter such as D C signals through diodes etc x The meter rea
40. he 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 equipment in accordance with the specification and shall not prevent subsequent rejection if the equipment is found to be defective All acceptance tests including other special tests as given in this specification and inspection shall be gone at the place of the manufacturer unless otherwise especially agreed upon by the Bidder and Purchaser at the time of purchase The purchaser reserves the right to insist for witnessing the acceptance routine testing of the bought out items The supplier shall give 15 days advance intimation to enable the purchaser to depute his representative for witnessing the acceptance and routine tests Material shall be despatched only after getting the dispatch authorization from the purchaser or his authorized representative after successful inspection testing The bidder shall afford the inspectors representing the purchaser all reasonable facilities without charge to satisfy him that the equipment is being furnished in accordance with this specification during stage inspection if any and final inspection 3 42 NUMBER OF SAMPLES AND CRITERIA FOR CONFORMITY The recommended sampling plan and the criteria for acceptance of the lot shall be as per Annexure E of IS 14697 1999 for the type of meters covered in this specification 3 43 PACKIN
41. hich the meter can record Explain tamper logic Compartment No 1 40 of total tamper memory for the current related tampers Compartment No 2 40 of total tamper memory for the potential related tampers Compartment No 3 20 of total tamper memory for the other tampers 18 Whether meter is designed in such a way that it would not record tamper under known system abnormal condition Yes 19 i ii Persistence time for logging occurrence of tamper Persistence time for logging restoration of tamper 5 minutes Tampers will be restored with in 60 seconds 20 a b c d Energy measurement details Type of mechanism registering No of digits in registering mechanism Starting current at minimum rated voltage and unit power factor of Ib Percentage error at unit power factor 5 of rated current 20 to 200 of rated Electronic non volatile memory amp LCD display Seven digit and additional characters for annunciation of displayed parameters 0 1 of Ib As per applicable standard Percentage error at unit power factor As per applicable standard As per applicable standard 2251 Spec HT TVM 234 e current Percentage error at 0 5 lag power Percentage error at 0 5 factor i lag Power factor As per applicable standard ii 10 of rated current As per applicable standard 20 to 200 of r
42. hin two weeks submit 30 prints and 2 good quality report copies of the approved drawings for purchaser s use Eight sets of operating manuals technical leaflets shall be supplied to each consignee for the first instance of supply One set of routine test certificate shall accompany each dispatch consignment The acceptance test certificates in case pre dispatch inspection or routine test certificates in cases where inspection is waived shall be got approved from the purchaser 3 45 SCHEDULES The tenderer shall fill in the following schedules which are part and parcel of the tender specification and offer If the schedules are not submitted duly filled in with the offer the offer shall be liable for rejection Schedule A II Guaranteed Technical Particulars of HTTVM All deviations from the specification shall be brought out in the schedules of deviations Schedule VI VII The discrepancies if any between the specification and the 2251 Spec HT TVM 26 catalogues and or literatures submitted as part of the offer by the bidders shall also be brought out 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 3 46 DELIVERY SCHEDULE The bidder is required to quote monthly delivery The delivery of quoted quantity should be completed in 8 months period including commencement
43. ication 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 7 Inspection during fabrication construction Final inspection and test 3 40 GUARANTEE The equipments supplied should be guaranteed for their performance for a minimum period of five years from the date of commissioning or five and half years from the date of receipt in stores whichever date is earlier The equipment found defective within the above guarantee period shall be repaired replaced by the supplier free of cost within one month of receipt of intimation The supplier shall also furnish an undertaking that there shall be no drift in the accuracy class of the meter for a minimum period of 10 years from the date of supply The supplier shall arrange to provide free training at places as desired by the purchaser for use of meter Computer Software etc The supplier shall provide competent and timely after sales service support 2251 Spec HT TVM yy as 3 41 INSPECTION The purchaser s representative may carry out the inspection during manufacture and before dispatch The supplier shall keep the purchaser informed in advance about the manufacturing programme so that the purchaser can arrange for inspection The manufacturer shall grant free access to the purchaser s representative at a reasonable time when t
44. if any shall invariably be stated in Schedule VI A amp B Departure from specifications attached with this specification Mentioning of such deviations elsewhere will not be considered The standard printed conditions of sales and other if any attached with the tender will not be considered 5 The prices offered against this specification shall be FIRM 2251 Spec HT TVM WE TN SCHEDULE III Volume A SPECIFICATION TECHNICAL SPECIFICATION amp SCHEDULE OF REQUIREMENT FOR SUPPLY OF 3 PHASE 4 WIRE A C STATIC HT TRIVECTOR ENERGY METER OF CLASS OF ACCURACY 0 5S WITH DLMS PROTOCOL AGAINST TN 2251 3 01 A SCOPE i This specification covers the design Engineering manufacture assembly inspection testing at manufacturers works before despatch supply and delivery at site FOR destination anywhere in vicinity of Class 0 5S accuracy static HT Tri vector Meters with DLMS protocol for energy accounting audit metering boundary amp tariff purpose along with software and interface cable as per requirement given in this specification The HT Tri vector meter should be 3 phase 4 wire type suitable for connection to a 3 phase 4 wires as well as 3 phase 3 wire system The meter should be capable to record and display KWh KVArh KVAh and maximum demand in KVA for 3 phase 4 wire as well as 3 phase 3 wire AC balanced unbalanced loads for a power factor range of zero lagging through unity up to zero leading as per requirement gi
45. in the relevant schedule and copy of such standards along with their English translation shall invariably be furnished along with the offer 3 03 CLIMATIC CONDITIONS The meters to be supplied against this specification should be capable of performing and maintaining required accuracy under extreme hot cold tropical and dusty climate and solar radiation typically existing in the state of Rajasthan India The meter shall be required to operate satisfactorily and continuously under the following tropical climate conditions a Maximum ambient air temperature 55 C b Maximum ambient air temperature in shade 45 C c Maximum temperature attainable by the meter exposed to Sun 60 C d Minimum ambient temperature in shade 5 C e Average daily ambient air temperature 40 C f Maximum relative humidity 95 g No of months of tropical monsoon condition 4 Months h Maximum attitude above mean sea level 1000 Meters 2251 Spec HT TVM 4 i Average rain fall 10 100 cms j Maximum wind pressure 200Kg Sq meter k Isoceranic level days year 40 l Seismic level Horizontal Accn 0 30 g m Permitted noise level 1 45 db 3 04 SUPPLY SYSTEM Rated Voltage Vref 3 x 63 5 V Phase to Neutral 3 phase 4 wire system For HTTVM Through PT 3x110V Phase to Phase Meter shall be programmed for PT ratio 11KV 110V Ph to Ph Rated current Ib 3 x 5 Amps Connected through CT Multiplying f
46. ions as per approved drawing samples Boiling Water Test The seal when emerged in the boiling water for two hours there shall not be any affect on the seal and it shall remain intact condition i e the seal should not become soft but instead should turn out to trail and easily break thus showing easily the tampering signs if it eventually happens Even with the help of any sharp instrument pulling with plier i e by applying mechanical force the male portion shall not come out from the female part body seal In case it comes out the same shall damage the seal so that it can not be re used Pull Out Test After locking the seal if the male part insert is pulled with mechanical force with the help of plier or any other instrument sharp instrument etc at normal condition the seal should not get unlocked without any damage and when such condition occurs it should leave traces of tampering Seal Wire In case if someone tries to pull the seal wire and in any of the tests as mentioned above at ii amp iii in that case the male female portion of the seal should be damaged and the same can be seen visually being a transparent one Chemical Test The seals shall be kept in the concentrated acid for minimum one hour in locked condition The same shall remain intact condition and if try to unlock the seal the same shall be damaged Temperature withstand test The seal should be capable to withstand temperature upto 147 deg C
47. m registered value shall also be made available on meter display The maximum demand will be computed from the main apparent energy register The integration period shall be set as 30 minutes on real time basis starting from 00 00 H The principle of maximum demand calculation used by the Bidder should be explained in the offer 3 23 B Maximum Demand Registration and MD resets Meter shall continuously monitor and calculate the average maximum demand of each demand interval time of 30 minutes on real time basis and maximum of these in a calendar month shall be stored The maximum demand shall automatically reset at 24 00 hrs of the last date of each calendar month for which minimum 30 years calendar shall be programmed by the manufacturer The cumulative kWh should also be recorded at 24 00 hrs on the last date of each calendar month for previous 6 months 3 24 MAXIMUM DEMAND RESET The auto reset facility of MD at pre defined date 8 time shall be provided The meter shall log on in the meter memory average value of voltage amp current for 30 minutes integration period the maximum demand reset count which should increment by one digit every time the MD is reset 3 25 LOADS SURVEY CAPABILITY amp BILLING POINT REQUIREMENTS For category A meter load survey parameter shall be current IR current IY Current IB block energy KWh and block energy KVAh Load survey period shall be 45 days with 30 minutes integration period
48. ments the seal shall be damaged and due to its transparent property the sign of internal tampering shall be easily detected Also once opened it can not be re used The seal shall be made in such a way that it can be easily locked with the help of finger and thumb pressing no tools shall be required to close the seal in the laboratory or at site Both the parts shall be designed in such a way that they can not be separated and the attachment shall be flexible and shall not break After inserting the seal wire through female part the cap of the male part shall be fitted in the female part in such a way that it should not leave any space to avoid insertion of any sharp tools for opening of seal body of the female part in hot or cold condition The seal shall have also the following features a Tamper resistance and reliable b Environmentally safe as it does not contain any lead c Withstand long term exposure to direct sunlight d Required no tools for installation e Transparent 2251 Spec HT TVM 42 6 f Heat resistance Testing The seals shall be inspected tested as a acceptance test at the manufacture s works before dispatch in presence of authorized representative of purchaser for the following tests ii iii iv vi i Physical Dimensional Check up The seals shall be subjected to visual check up for verification of workmanship and other features as mentioned above including shape design dimens
49. mper Evident Poly carbonate Seals shall conform to the Nigam s specification as under 1 Material of Double Anchor Tamper Evident Poly carbonate Seals The raw material used for Double Anchor Tamper Evident Poly carbonate Seals shall be of M s Dow Caliber Ltd Switzerland Grade 201 15 M s GE Plastic Singapore Grade 143R M s Dupont Japan Grade IV 20 or any other manufacturer having better properties as under Sr No Properties Poly carbonate 1 Melting temperature 280 C to 295 2 USE Engineering 3 Softness Hard 4 Durability Weather effect resistance 5 Transparency Fully transparent long time transparency 2 Service Conditions Climatic Conditions The meters to be supplied against this specification should be capable of performing and maintaining required accuracy under extreme hot cold tropical and dusty climate and solar radiation typically existing in state of Rajasthan India The meter shall be required to operate satisfactorily and continuously under the following tropical climatic conditions 2251 Spec HT TVM 40 1 Maximum ambient air temperature 55 deg C 2 Maximum ambient air temperature 45 deg C in shade 3 Maximum temperature attainable by 60 deg C the meter exposed to sun 4 Minimum ambient temperature 5 deg C 5 Average daily ambient air 40 deg C temperature 6 Maximum relative humidity 95 7 Number of
50. n as applicable Event Log Profile B DEMAND INTEGRATION PERIOD The maximum demand integration period may be set at 30 minute Meter shall be programmable for integration period of 15minutes also C MD RESET It should be possible to reset MD by the following a Auto reset at 24 00 hrs at the end of each billing cycle D COMMUNICATION CAPABILITY The meter shall be provided with two ports for communication of the measured collected data as per guideline document enclosed in the annexure i e a hardware port compatible with RS 232 or RS 485 specifications which shall be used for remote access through suitable Modem GPRS CDMA 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 The RS 485 port shall be used at Substations suitable for multi drop connections of the 2251 Spec HT TVM 15 meter for exporting data to sub station data logger DCU Computer and the remote end server The RS 232 port shall be used at boundary points meters and Distribution Transformer meters capable to transfer and export data to the remote end server through suitable communication mediums GPRS CDMA Both ports shall support the default and minimum baud rate of 9600 bps E HAND HELD UNIT HHU To enable local reading of meters data a DLMS compliant HHU shall be used The HHU shall be as per specification given in the en
51. n front side i Meter Body Arrangement of two seals which can be sealed by purchaser ii Terminal cover MD reset push button not provided Arrangement of one seal through iii M D reset button only if optical cover which can be sealed by button provided purchaser iv Communication port Sealing arrangement should be explained Whether name plate All information as indicated in column provided on meter bear 1 will be provided on meter rating the information as per plate IS ETD 13 6211 m Whether meter serial No Jis Yes to be programmed into meter i Programmed into meter memory for identification through memory for identification HHU through HHU Yes required ii Available on meter Yes required iii display Available thru bar code with month 8 year n Insulation resistance As per the CBIP report No 304 1EC62052 11 2003 o A C rms withstands As per the CBIP report No voltage for current 304 IEC62052 11 2003 circuits and metal case p Burden and watt loss of As per CBIP report No 304 or IEC voltage circuit per phase 62052 11 2003 q Burden of current circuit As per CBIP report No 304 or IEC per phase 62052 11 2003 r Size and material of Brass M 3 M 4 size of screws will be current potential neutral terminal provided for voltage current 8 neutral terminals 2251 Spec HT TVM 30 s Terminal hole size for current Appx 4 5 mm 0
52. nt of the meter shall be as specified in the relevant Standards described in clause 3 02 of this specification 3 32 ELECTROMAGNETIC COMPATIBILITY AND INTERFERENCE The meter shall meet EMI EMC requirement as specified in the relevant Standards described in clause 3 02 of this specification and shall also be protected against radiated interferences from either magnetic or radio frequency sources 3 33 MECHANICAL REQUIREMENT The meter shall be capable of meeting the mechanical requirement as specified in the relevant standards described in clause 3 02 of this specification 3 34 CLIMATIC INFLUENCE REQUIREMENT The meter shall meet the requirement of dry heat cold damp heat cold damp heat cyclic test as per the relevant standards described in clause 3 02 of this specification 3 35 MINIMUM TESTING FACILITIES The tenderer should have the necessary testing facility for carrying out the following tests i AC voltage test il Insulation resistance test iii Test of limits of errors iv Test of meter constant V Test of starting condition vi Test of no load condition vii Repeatability of error test viii Test for power consumption ix Vibration test X Tamper conditions as per purchaser specification xi Shock test Notes a Manufacturer should possess fully computerized Meter Test Bench system for carrying out the relevant routine acceptance tests as well facility to generate Test Reports for each and
53. nts either off or on shall be logged in meter memory and be available for downloading through a CMRI for viewing at the BCS end These events shall be logged in a separate compartment on roll over first in first out basis Electrical values snap shots shall not be required for the logging of Power off Power on events xiv The meter should be compatible to GSM GPRS CDMA technology for remote metering xv The meter should be compatible to data exchange for electricity meter reading tariff load control as per IS ETD 13 6211 2010 3 18 DISPLAY OF MEASURED VALUES 2251 Spec HT TVM 32 The measured value s shall be displayed on seven segments seven digits Liquid Crystal Display LCD display unit register having minimum character height of 8 mm LCD to be of STN super tested kneumatics type construction suitable for temperature 70 Deg C continuously The data should not be lost in the event of power failure and should be stored in non volatile memory The non volatile memory should retain data for a period of not less than 10 years under un powered condition i e the non volatile memory shall have a storage life without use of ten 10 years Battery backup memory will not be considered as NVM It should be possible to easily identify the single or multiple displayed parameters through symbols legend on the meter display itself or through display annunciator alongwith a separate legend plate fixed on the front face of the m
54. ode xi Meter Base And Cover a The meter base meter cover terminal block and ETBC shall be made of unbreakable high grade flame retardant polycarbonate with thickness more than 2 0 mm and of good dielectric and mechanical strength The material of meter base amp terminal block shall be glass reinforced b Meter cover and extended terminal block cover ETBC should be injection moulded in UV stabilized polycarbonate in natural colour The ETBC shall be kept fully transparent and the meter cover except the window portion shall be semi transparent non transparent corrugated The moulded meter case and terminal cover s should not change in colour shape size and dimensions when subjected to 200 hours on UV ageing test It should withstand 650 deg C glow wire test and heat deflection test as per ISO 75 c The manufacturer shall emboss on the base cover s the name of the material they have used in an abbreviated form e g PCFR 10 GF to denote that they have used polycarbonate flame retardant 10 glass filled polycarbonate d The window portion shall be of transparent unbreakable silicon coated scratch resistant surface UV stabilized polycarbonate material for easily reading all the displayed values parameters nameplate details and calibrating LED It should not fade in course of time and become opaque causing inconvenience in reading The window portion shall be ultrasonically welded with the meter cover such that it
55. ossed laser etched printed of monogram of JVVNL on front side and month and year of manufacture in figure embossed on the backside The laser etched printing should be through complete thickness of polycarbonate e Seal Wire The non corrosive non magnetic stainless steel twisted wire 26 guage confirming to IS 280 shall be used The seal wire shall not have affect of magnet i e it should not attract to magnet The length of the sealing wire should be minimum 8 twisted two strand pull resistant stainless steel wire fixed to the seal The diameter of each individual stand should be of 0 4 to 0 5 mm dia and overall diameter of the seal wire shall be0 9 to 1 0 mm The No of turns shall be minimum 20 per inch The seal wire should be inserted at the female and male part during the process of moulding itself It should be continuous and visible throughout the length of the wire The wire shall be intact such that it can not be pulled out after sealing The seal wire insert hole should be just sufficient for passing the seal wire and hole of larger dia is discouraged f Tolerance Tolerance to the tune of 10 is allowed in respect of various dimensions and number of turns per inch of seal wire 5 General Construction The seal shall be capable to withstand temperature upto 147 C without any damage deformation The seal shall be designed for a single use only and if tampered with the help of plier knife or any other sharp instru
56. period of 30 days In case ordered quantity is different than quoted quantity then monthly delivery shall be adjusted proportionately Tenders in which monthly delivery schedule is not indicated shall be ignored 3 47 GENERAL INFORMATION a Frequent changes in specifications during currency of contract will be avoided and if required the same shall be effected on mutually agreed basis b For any further query regarding DLMS protocol refer to document IS ETD 13 6211 2010 for Data Exchange for Electricity meter reading tariff and load control c Nigam is not averse to deciding tenders on differential prices to get better quality meters d Rates of new firms will not form basis for rates of regular suppliers 2251 Spec HT TVM 27 Annexure A Tamper Logics for HT TVM Persistence time 5 Min Restoration Time 1 Min 60 Sec Tamper Events Occurrence Restoration 1 Missing Potential a Voltage lt 20 Vb gt 40 Vb b Current gt 10 Ib Ignored 2 CT Polarity Reversal a Line Current in tampered phase gt 5 Ib in reverse gt 10 Ib in direction forward direction b Power Factor gt 0 1 gt 0 1 3 CT Open a Line current in tampered phase lt 2 Ib gt 5 Ib b Line current in other phases gt 10 Ib gt 5 Ib c Load current in tampered phase gt 10 Ib Ignore 4 CT Bypass a By Pass Current gt 20 Ib lt 10 Ib cur
57. rce and screw fixings which may be tightened and loosened several times during the life of the meter shall screw into the body of brass terminal All parts of each terminal shall be such that the risk of corrosion is minimized Two screws shall be provided in each current terminal for effectively clamping the external leads or thimbles Each clamping screw shall engage a minimum of three threads in the terminal The ends of screws shall not pierce and cut the conductors used Electrical connection shall be so designed that contact pressure shall not be transmitted through insulating materials If the manner of fixing of terminals is through thimbles lugs reducer type terminals The supplier shall supply a set of the same along with each meter ii The internal diameter of the terminal hole shall be minimum 4 0mm The holes in the insulation material of the terminal block which form an extension of the terminal holes shall be of sufficient size to accommodate the insulation of the conductors also The clearance and creepage distance shall not be less than the values specified in clause 6 6 of IS 14697 1999 Further the supporting webs between two terminals of the terminal block should be sufficiently high to ensure that dust does not bridge the two neighboring terminals or a flash over does not take place f The fixing screw s used on the ETBC for fixing and sealing of extended terminal cover shall be held captive on the terminal cover g
58. rein under should be logged in the meter memory and available for retrieving through the meter s optical port via CMRI and downloading to the BCS g Cover Open Tamper If the meter cover is opened the meter shall log this as tamper and shall display Open with date and time of such opening and should not restore in any 2251 Spec HT TVM 18 condition in power on as well as power off condition in blinking display on the LCD alongwith other display parameters so that it is immediately noticed by the meter reader and same shall be downloaded in CMRI h High voltage and high frequency The accuracy of the meter should not be affected with the application of abnormal voltage frequency generating device such as spark discharger of approximately 35 KV The meter shall be tested by feeding the output of such device s to meter in any of the following manner for 10 minutes i On phase and neutral terminals ii On any connecting wires of the meters iii Voltage discharge with 0 to 10mm spark gap iv Spark on meter body v At any place in load circuit The accuracy of the meter shall be checked before and after the application of above device s with site conditions The high voltage amp high frequency 35 KV spark device test shall not be applicable for A category meters 3 28 TAMPER LOGIC A properly designed meter tamper logic should be provided the tamper logic should be capable discriminating the system abnorm
59. rent in tampered phase 5 Current unbalance a Maximum current Minimum current gt 30 Ib lt 10 Ib 6 Neutral Disturbance a DC current injected on neutral from If meter detect removal of DC load side by mean of electronic circuit voltage greater than injection using diodes after removal disconnection 1 25 times of Vref of neutral 7 Interference of Magnetic field a Presence of Magnetic field Magnetic field which removal of affects accurate magnetic field Meter recording 2251 Spec HT TVM 28 Annexure B GUARANTEED PARTICULAR FOR 3 PHASE 4 WIRE HT TRI VECTOR METER OF ACCURACY CLASS 0 5S WITH DLMS PROTOCOL Terminal block Cover Transparent transparent Description Requirements as per specifications Technical Particulars offered 1 Name of manufacturer a and address b Type designation of meter offered c Class of accuracy of i KWh Recording Class 0 55 ii KVArh Recording Class 0 55 iii KVAh Recording Class 0 55 iv KVA MD Recording Class 0 55 d Standard applicable IS 14697 IEC 687 CBIP 3048 as per IS ETD 13 6211 e Whether meter bears BIS certification mark 2 Type of meter i e No of 3 Phase 4 wire HT 3 element type element meter 3 RATING AND GENERAL PARTICULARS a Reference Voltage 110V Phase to Phase 63 5 Volts Phase to Neutral 240V Phase to neutral
60. rol companion specification ETD 13 6211 released by BIS b Acceptance tests The Supplier in the presence of the Purchaser s representative shall carry out all acceptance tests as stipulated in the relevant standards The following additional tests shall also be carried out on meters from each lot offered for inspection as per the relevant standards on selected samples Shock test Vibration test Magnetic Induction of External Origin and Verification of tamper and fraud detection features and threshold values as per specifications and subsequent agreement between the Supplier and Purchaser Note Where testing facilities do not exist at the Supplier s works for shock and vibration testing as per the relevant standards these two tests may be carried out in accordance with the provisions of IS 3010 with latest amendments c Routine test All routine tests as stipulated in the relevant standards shall be carried out and routine test certificates reports shall be submitted to the Purchaser for approval and also placed inside individual meter packing 3 37 FIELD LABORATORY TESTING OF METER The supplier should furnish detailed write up for the procedure to be adopted for error testing of the meters in the laboratory and at site field 3 38 1 SAMPLE ALONG WITH BID 2251 Spec HT TVM ES The bidder shall furnish one sample of HT TVM of each category conforming to this specification duly sealed along with the
61. rom the front Test output device shall be provided in the form of one common LED for kWh kVArh and optionally kVAh with the provision of selecting the parameter being tested Alternatively test output device in the form of separate LEDs for kWh kVArh and optionally kVAh is also acceptable The relation between test output and the indication on display shall comply with the marking on the name plate imp per KWh kVArh kVAh The bidder shall state the necessary number of pulse count s to ensure measurement accuracy of at least 1 10 of class of the meter at the different test points The resolution of the test output pulse s should be sufficient to enable conduction of the starting current in less than 10 minutes and accuracy test at the lowest load with desired accuracy within 5 minutes 2251 Spec HT TVM 16 3 22 AUXILIARY POWER The auxiliary power shall be drawn from all the three phases and the meter should be able to remain powered up with availability of any two phases or any one phase and neutral Alternative power packs one percent of ordered quantity for taking reading during power down conditions shall be supplied free of cost in case of external source 3 23 A MAXIMUM DEMAND MD REGISTRATION The meter shall continuously monitor and calculate the average demand in KVA during the integration period set and the maximum out of these shall be stored along with date and time when it occurred in the meter memory The maximu
62. s of HHUs to read the meter information or for Configuration Change activity in the meter after entering the password provided by SE M amp P Jaipur as per Table 31 of ETD13 6211 c Support Display There should be user friendly approach for viewing meter data for the reading collected now or for the reading collected in the past All information about a particular consumer should be segregated and available at one place so that locating any consumer s past data is easy It should be possible to locate retrieve data on the basis of one of the following particulars i Consumer ID Number ii Meter Sr No iii Date of meter reading iv Location d The Data Transfer It should be possible to transfer the data to and from HHU through serial interface port 7he data transfer shall be in the desired format which suits to billing software of the Nigam f Security The BCS shall have multi level password for data protection and security The first level shall allow the user to enter the system The different software features shall be protected by different passwords The configuration of passwords shall be user definable The software installed on one PC shall not be copiable on to another PC 3 17 SALIENT FEATURES The meter shall have the following additional salient features i It should be possible to check the healthiness of phase voltages by displaying all the voltages on the meter display ii The meter display shall
63. should be ensured at the following stages a At PCB manufacturing stage each board shall be subjected to computerized bare board testing b At insertion stage all components should undergo computerized testing for conforming to design parameters and orientation c Complete assembled and soldered PCB should undergo functional testing using Automatic Test Equipments Testing Jig d Prior to final testing and calibration all electronic components of the meter shall be subjected to accelerated ageing test to eliminate infant mortality iii The calibration of meters shall be done in house iv The bidders should submit the list of all major components used in meter along with the offer 2251 Spec HT TVM 9 v A detailed list of bought out items which are used in the manufacture 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 3 13 SEALING ARRANGEMENT OF THE METER At least two sealing screws shall be provided for proper fixing of meter cover so that access to the working parts shall not be possible without breaking the seals One screw provided on left side shall be used by manufacturer to provide his own sealing with high quality double anchor polycarbonate seal bearing laser etched monogram of JVVNL along with meter serial number and other provided on right si
64. t Technology SMT The PCB material should be made of glass epoxy FR 4 grade conforming to relevant standards or better grade iv All insulating materials used in the construction of meters shall be non hygroscopic non ageing and of tested quality All parts that are likely to develop corrosion shall be effectively protected against corrosion by providing suitable protective coating v The meter shall have test output device in the form of calibrating LED accessible from the front and capable of being monitored conveniently with suitable testing equipment vi The meter shall conform to the degree of protection IP 51 of IS 12063 IEC 60529 for protection against ingress of dust moisture and vermin vii The meter shall be immune to tampering through application of external magnetic field A C electro magnet or D C magnet as per the value specified in CBIP technical report 88 with latest amendments However the meter alone should comply up to 0 27 Tesla Magnetic field with a permanent magnet viii The meter should continue to function even if any spurious signals are injected on the neutral of the meter such as D C signals through diodes etc and or High Frequency Signals ix The meter shall be supplied with a transparent extended terminal block cover ETBC 2251 Spec HT TVM 6 x The meter shall have two push buttons one for forward scrolling and other for reverse scrolling of different parameters available in push button m
65. tended by Minimum 30 mm below the terminal block A firm connection shall be established with in the meter case to energies the voltage circuit Arrangement for display optical port auxiliary supply source push buttons for manual mode meter nameplate and display sequence should be made in such a manner that it is accommodated in size of 170mm W x 140 mm H from opposite side of ETBC This is required for facilitating of fixing of the HT LT Tri vector meter in HT panel box 3 12 MANUFACTURING ACTIVITIES All the material electronics and power components ICs used in the manufacture of the meter shall be of highest quality and repudiated make as per Annexure H to ensure higher reliability longer life and sustained accuracy The verification of the components shall be carried out at manufacturer s works before offering material before inspection i The meter should employ latest technology such as Application Specific Integration Circuit ASIC to ensure reliable performance The mounting of component on the PCB Printed Circuit Board must be SMT Surface Mounted Technology type by deploying the automatic SMT pick and place machine and reflow soldering process The electronic component used in the meter shall be of high quality such that the meter shall remain in the accuracy class for at least up to 10 years Further the Bidder should own or have assured access through hire lease or subcontract of above facilities ii Quality
66. truction of the port should be such to facilitate the data transfer easily National Semiconductors Hitachi Texas Instruments Siemens Agilent Philips Hp 11 Power supply The power supply should be with the capabilities as per the relevant standards The power supply unit of the meter should not be affected incase the maximum voltage of the system appears to the terminals due to faults or due to wrong connections As Specified 12 Mechanical parts The internal electrical components should be of electrolytic copper amp should be protected from corrosion rust etc The other mechanical components should be protected from rust corrosion etc by suitable plating painting methods The components equivalent or better than those mentioned in the list are also acceptable 2251 Spec HT TVM 39 SECTION III TECHNICAL SPECIFICATION FOR DOUBLE ANCHOR TAMPER EVIDENT POLYCARBONATE SEALS TO BE PROVIDED ON BODY SEAL OF METER AGAINST TN 2251 SCOPE The specification covers the design manufacture testing at manufacturers works supply and delivery at destination stores of Double Anchor Tamper Evident Poly carbonate Seals for sealing of Meter body and terminal covers of energy meters Meter Box etc with non corrosive non magnetic stainless steel sealing wire These seals shall also be used for sealing the meters metering equipments and inspected materials The Double Anchor Ta
67. uld not fade or otherwise be adversely affected by UV exposure with lapse of time The TVMs shall have also marking of DLMS meter on name plate 3 15 CONNECTION DIAGRAM amp TERMINAL MARKINGS The connection diagram of the meter shall be clearly shown for 3 phase 4 wire system as well as 3 phase 3 wire system on inside portion of the terminal cover and shall be of permanent nature The meter terminals shall also be marked and this marking should appear in the above diagram 3 16 SOFTWARES AND INTERFACE BETWEEN METER 8 HHU Adequate number of licensed copies of the following software shall be made available and shall be installed in HHU and Base Computer System BCS by the Supplier without extra cost The Supplier shall impart necessary training regarding installation and use of the above softwares The exact quantity of each type of software to be so supplied shall be intimated to the Supplier prior to at the time of ordering subject to maximum 30 Nos sets 2251 Spec HT TVM 10 i Software for reading down loading meter data as well as configuration change activity in meter shall be as per Table 31 of ETD13 6211 normally resident in the Hand Held Unit HHU Software suitable for MS Window XP or higher version The software shall be installed in and be compatible to all makes of the HHUs Analogic Sands any other make and PC Laptop as well as supplied separately in the form of floppies CDs Presently following TOD time zones are r
68. ven in this specification ii It is not the intent to specify completely herein all the details of the design and construction of material The material shall however conform in all respects to high standards of engineering design and workmanship and shall be capable of performing for continuous commercial operation in a manner acceptable to the purchaser who will interpret the meanings of drawings and specification and shall have the power to reject any work or material which in his judgment is not in accordance therewith The offered HT TVM shall be complete with all accessories software and components necessary for their effective and trouble free operation Such components shall be deemed to be within the scope of Bidder s supply irrespective of whether those are specifically brought out in this specification and or the commercial order or not iii The meter shall be ISI mark 8 bidder shall furnish the details of ISI license at the time of bid or within 60 days from the date of opening of bid B REQUIREMENT HT TVM 0 5S with DLMS Protocol category A for Feeder and Metering 2000 Nos and category C for consumer Metering 1780 Nos Total 3780 Nos NOTE Quantity of Category A amp Category C may be interchanged 2251 Spec HT TVM RE 3 02 STANDARDS APPLICABLE Unless otherwise specified elsewhere in this specification the performance and testing of the meters shall conform to the following Indi

Specification - Jaipur Vidyut Vitran Nigam Limited ,Government of

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