Home

SCHEDULE-III (Volume-A) - Jaipur Vidyut Vitran Nigam Limited

1. b Type designation of meter offered c Class of accuracy of i KWh Recording Class 0 5S ii KVArh Recording Class 0 5S iii KVAh Recording Class 0 5S iv KVA MD Recording Class 0 5S d Standard applicable IS 14697 IEC 687 CBIP 304 amp guidelines issued by CPRI Bangalore e Whether meter bears BIS certification mark 2 Type of meter i e No of element 3 Phase 4 wire HT LT 3 element type meter 3 RATING AND GENERAL PARTICULARS a Reference Voltage 110V Phase to Phase 63 5 Volts Phase to Neutral 240V Phase to neutral b Basic current 5 Amps c Maximum continuous current 10 Amps d Power supply variation Whether Offered meters are capable to meter is suitable for working with work satisfactorily under following supply system variation following range Specified operating range i Limit range operation 0 8 to 1 15 V of Vref ii Frequency range 0 7 to 1 2 V of Vref ii 50 5 Hz Ref freq 50Hz e Power factor range 0 lag unity 0 lead f Ambient temperature range 5 C to 60 C g Whether meter base and cover are ultrasonically welded h Material used for meter housing i Meter Base Engineering plastic material ii Meter cover will be used for meter base iii Terminal Block Housing cover terminal block iv Terminal block Cover Transparent housing and terminal block cover Terminal block cover will be transparen
2. x The meter reading 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 as well as on meter display 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 Data Alteration Count Meter should be capable to display the data alteration count This count should increase by one digit whenever there is any programme 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 thei
3. 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 Handling and unpacking instructions Bill of material indicating contents of each package and spare materials 3 47 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 arrangements fitting details
4. 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 Spec HT LT TVM 24 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 within
5. 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 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 dischager 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 1 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 3 29 TAMPER LOGIC As per the guideline issued by CPRI Banglore 3 30 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 120 seconds Spec HT LT TVM 18 3 31 ACCURACY REQUIREMENT The accuracy of parameters measured by meters shall be tested in accordance with th
6. 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 mannetr way shall also be considered The bidder should elaborate the procedure adopted e 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 force 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 termin
7. If Yes please also displayed as per guideline describe method of displays of CPRI Banglore 5 Whether meter is provided with Yes to be Provided in the i test output accessible from the form of a blinking LED front of the meter Details of test output device To be Provided in the form provided for kWh KVARh amp of single LED for all the ii KVAh three vectors Pulses for Load gt 10 amp Necessary number of pulse for Load lt 10 to be count s to ensure measurement of provided iii accuracy of at least 1 10 of class of meter Whether it is possible to satisfactorily conduct accuracy Yes it shall be possible to test at lower load in less than 5 conduct accuracy test at minutes and starting any test in lower load within its limits less than 10 minutes iv 6 Whether meter is provided with a Yes galvanically isolated galvanically isolated communication port is to communication port suitable for be provided for reading data transfer through either CMRI data through CMRI and or a remote device or both through external modem over telephone line 7 Memory a Type Non volatile or battery Non volatile memory backed Spec HT LT TVM 32 b Non volatile memory retention time in absence of power Minimum 10 Years Ds m A e il iii iv Maximum demand registration amp load survey capability Integration period for maximu
8. POINT REQUIREMENTS As per the guideline issued by CPRI Banglore 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 indicate and record the total resultant quantities of fundamental frequency and harmonics or alternatively the meter shall record fundamental frequency quantities and harmonics related quantities such as KWh KVAh and KVARh separately Spec HT LT TVM 16 The meter shall comply with the provisions of IS 14697 1999 and shall be capable of measuring 50 Hz energy and total energy In this case meter shall indicate mechanism of 50Hz energy measurement sampling rate accuracy of current measurement under the presence of harmonics Alternatively meter shall comply with IEC 62053 22 2003 and shall be capable of measuring total energy consisting of fundamental energy and harmonics energy In this case percentage distortion due to harmonics should be available in the graphics The fundamental and total energy shall be logged in the meter memory and be capable of downloading to the BCS through the HHU and be available for viewing at the BCS end 3 27 SELF DIAGNOSTIC FEATURE The meter shall be capable of performing complete self diagnostic check to monitor the circuits for any malfunctioning to ensure integrity of data memory locati
9. 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 d 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 e 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 cannot be removed undamaged without breaking the cover f 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 ul
10. 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 neutral of the meter such as DC Spec HT LT TVM 34 signals through diodes etc 16 Whether snap shots numerical Yes Snap shots of values of voltage current Power individual voltages factor amp energy KWH reading at currents power factors the time of logging and restoration active energy at the time of any tamper event are available at tamper logging shall be the BCS end to analyze the available at BCS recorded tamper events 17 Minimum number of tampers 30 tamper events for PT events which the meter can missing occurrence record Explain tamper logic restoration as one event amp neutral disturbance 40 tamper events for CT reversal CT open bypass occurrence restoration as one event 20 tamper events for Current Unbalance occurrence restoration 10 tamper events for magnet tamper and cover open tamper occurrence restoration 18 Whether meter is designed in such Yes a way that it would not record tamper under known system abnormal condition 19 Persistence time for logging 5 minutes i occurrence of tamper Persistence time for logging restoration of tamper Tampers will be restored with in 120 seconds ii 20 Energy measurement details Type of registering mechanism a Electronic no
11. facilitating of fixing of the HT LT Tri vector meter in HT LT panel box 3 12 MANUFACTURING ACTIVITIES 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 should be ensured at the following stages a At PCB manufacturing stage each board shall be subjected to computerised bare board testing b At insertion stage all components should under go computerised testing for conforming to design parameters and orientation c Complete assembled and soldered PCB should under go 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 ili The calibration of meters shall be done in house Spec HT LT TVM 8 iv The bidders should submit the list of all major components used in meter along with the offer v A detailed list of bought
12. voltage As per applicable standard iii and Unit PF h 0 5 lag P F As per applicable standard Change of error under influence of As per applicable standard external A C and D C magnetic As per applicable standard i field as per IS and specifications As per applicable standard il iii 21 Year since when the design offered is in vogue 22 Reference of certification mark license 23 Is the meter capable of recording Yes correctly both under balance unbalanced load conditions 24 The requisite details and In the absence of power description of facility to read meter can be read through meter in the absence of power an external battery pack through inductive coupled arrangement as per IS 25 Miscellaneous a Is the meter independent of phase Yes sequence i e can the meter record correctly even if the phase sequence of supply is changed Is the meter capable of recording b correctly under low load As per relevant standard conditions If so up to what of full load Is the resetting of demand and c read facility dependent on Yes availability of main power supply Whether Meter software residing Spec HT LT TVM 36 d e g h i k ii iii iv D 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 th
13. with the help of meter and HHU should be supplied as per Annex G15 of IS 14697 1999 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 be provided with adequate magnetic shielding so that any external magnetic field AC Electro Magnet or DC Magnet as per the values specified in CBIP Technical Report No 88 with latest amendments applied on the meter shall not affect proper functioning and recording of energy as per error limits prescribed by CBIP However the meter alone should comply up to 0 27 Tesla D C magnetic field On application of 0 27 Tesla DC magnet at anywhere on meter body the meter shall record energy at Imax rated voltage and unity power factor as per CBIP IS in case of Magnetic Interference beyond 0 27 Tesla and the event of Magnetic Interference and restoration shall be available with date amp time stampings along with other snap shots 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
14. 2053 22 2003 AC Static Watt hour Meters for Active TEC 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 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 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 temp
15. C62052 11 2003 o A C rms withstands voltage for As per the CBIP report No current circuits and metal case 304 IEC62052 1 1 2003 p Burden and watt loss of voltage As per CBIP report circuit per phase No 304 or IEC 62052 11 2003 q Burden of current circuit per As per CBIP report phase No 304 or IEC 62052 11 2003 r Size and material of Brass M 6 size of screws current potential neutral terminal will be provided for voltage current amp neutral terminals s Terminal hole size for current Appx 4 5 mm 0 6mm Spec HT LT TVM 31 t No amp size amp material of screws Two numbers M 6 size of for each current terminal screws u Size of terminal hole for potential Appx 3 0 mm 0 5 mm terminal v No and size and material of Two numbers of M 6 size screws for each potential terminal w Whether earthing terminal provided outside or inside the meter body x Overall dimension of meter with tolerance y Weight of the meter Not more than 1 2 kg 0 2 kg appx Z Short time current withstands As per CBIP report capability No 304 or IEC 62052 11 2003 za Minimum centre to centre Minimum centre to centre distance between adjacent distance between adjacent terminals terminals will be 11 4 mm 4 DISPLAY SEQUENCE A Whether display parameters are parameters will be available
16. P3 2 2 1 0 B ph active total instantaneous power P3 2 3 1 0 R ph reactive instantaneous power P3 3 1 1 0 Y ph reactive instantaneous power P3 3 2 1 0 B ph reactive instantaneous power P3 3 3 1 0 R ph apparent instantaneous power P3 4 1 1 0 Y ph apparent instantaneous power P3 4 2 1 0 B ph apparent power P3 4 2 1 0 R ph instantaneous Power Factor P4 1 1 0 0 Y ph instantaneous power Factor P4 2 1 0 0 B ph instantaneous power Factor P4 3 1 0 0 Average instantaneous power Factor P4 4 1 0 0 Voltage angle Y ph wrt R ph P5 1 0 0 0 Voltage angle B ph wrt R ph P5 2 0 0 0 Power Factor angle R ph P6 1 0 0 0 Power Factor angle Y ph P6 2 0 0 0 Power Factor angle B ph P6 3 0 0 0 Active import fundamental P7 1 5 1 0 Active import total P7 1 5 2 0 Active export fundamental P7 1 6 1 0 Active export total P7 1 6 2 0 Active forwarded fundamental P7 1 18 1 0 Active forwarded total P7 1 18 2 0 Active Sum Imp Exp fundamental P7 1 13 1 0 Active Sum Imp Exp total P7 1 13 2 0 Spec HT LT TVM Active net Imp Exp fundamental P7 1 14 1 0 Active net Imp Exp total P7 1 14 2 0 Reactive import P7 2 7 0 0 Reactive export P7 2 8 0 0 Reactive all 4 quadrant P7 2 13 1 0 Reactive Q1 P7 2 1 0 0 Reactive Q2 P7 2 2 0 0 Reactive Q3 P7 2 3 0 0 Reactive Q4 P7 2 4 0 0 Reactive Q1 Q4 P7 2 5 0 0 Reactive Q2 Q3 P7 2 6 0 0 Reactive Q1 Q4 P7 2 9 0 0 Reactive Q2 Q3 P7 2 11 0 0 Apparent Sum a
17. Spec HT LT TVM 1 T SCHEDULE III Volume A TECHNICAL SPECIFICATION amp SCHEDULE OF REQUIREMENT FOR SUPPLY OF 3 PHASE 4 WIRE A C STATIC HT LT TRIVECTOR ENERGY METER OF CLASS OF ACCURACY 0 5S WITH DLMS PROTOCOL AS PER GUIDELINE OF CPRI BENGALURU 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 any where in vicinity of Class 0 5S accuracy static HT LT 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 and the LT Tri vector meter should be suitable for connection with 4 CT provided in neutral or without 4 CT in neutral circuit 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 given in this specification 11 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 engine
18. al 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 Spec HT LT TVM 272 g 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 o
19. al a Voltage lt 20 Vb gt 40 Vb Spec HT LT TVM 28 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 current 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 Meter recording magnetic field Spec HT LT TVM SCHEDULE A Il 29 GUARANTEED PARTICULAR FOR 3 PHASE 4 WIRE HT LT TRIVECTOR METER OF ACCURACY CLASS 0 58 WITH DLMS PROTOCOL surface mounted will be of SMT type x Description Requirements as per Technical Particulars offered i specifications 1 Name of manufacturer and address a
20. e 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 32 ELECTRICAL REQUIREMENT The electrical requirement of the meter shall be as specified in the relevant Standards described in clause 3 02 of this specification 3 33 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 34 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 35 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 36 MINIMUM TESTING FACILITIES The tenderer should have the necessary testing facility for carrying out the following tests 1 AC voltage test ii 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 tes
21. e 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 D Whether sample of offered meter has been furnished along with tender offer If Yes give detail such as Serial No type etc 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 26 Principle of operation of the meter outlining the method and stages of computation of various parameters starting from input voltage and current signals including the sampling rate application It shall be supplier specific Details shall be mentioned Spec HT LT TVM ES y Aa 27 Method adopted to transform voltage and current to the desired low values with explanation on devices used such as CT PT or potential divider a
22. er query regarding DLMS protocol refer to guideline document for Data Exchange for Electricity meter reading tariff and load control issued by CPRI Banglore Spec HT LT TVM Parameter Code List 25 Annexure A List of most common parameters Parameters codes for other parameters can be generated in similar way Parameter description Parameter Code R Phase phase to neutral instantaneous voltage P1 1 1 1 0 Y Phase phase to neutral instantaneous voltage P1 1 2 1 0 B Phase phase to neutral instantaneous voltage P1 1 3 1 0 System phase to neutral instantaneous voltage P1 1 4 1 0 R Phase phase to neutral Line current P2 1 1 1 0 R Phase phase to neutral Active current P2 2 1 1 0 R Phase phase to neutral Reactive current P2 3 1 1 0 Y Phase phase to neutral Line current P2 1 2 1 0 Y Phase phase to neutral Active current P2 2 2 1 0 Y Phase phase to neutral Reactive current P2 3 2 1 0 B Phase phase to neutral Line current P2 1 3 1 0 B Phase phase to neutral Active current P2 2 3 1 0 B Phase phase to neutral Reactive current P2 3 3 1 0 Instantaneous neutral current P2 0 4 1 0 System active total instantaneous power P3 2 4 1 0 System reactive instantaneous power P3 3 4 1 0 System apparent instantaneous power P3 4 4 1 0 R ph active total instantaneous power P3 2 1 1 0 Y ph active total instantaneous power
23. erature 50 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 i Average rain fall 10 100 cms j Maximum wind pressure 200Kg Sq meter k Isoceranic level days year 40 1 Seismic level Horizontal Accn 0 30 g m Permitted noise level 45 db Spec HT LT TVM 3 3 04 SUPPLY SYSTEM Rated Voltage Vref 3 x 63 5 V Phase to Neutral 3 phase 4 wire system For HTTVM Through PT 3x 110 V Phase to Phase Meter shall be programmed for PT ratio 11K V 110V Ph to Ph Rated Voltage Vref 3 x 240 V Phase to Neutral 3 phase 4 wire system For LTTVM 3 x 415 V Phase to Phase Rated current Ib 3 x 5 Amps Connected through CT Multiplying factor 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 sup
24. ering 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 Gii The meter shall be ISI mark amp bidder shall furnish the details of ISI license at the time of bid or or within 60 days from the date of opening of bid B REQUIREMENT As per MM wing 3 02 STANDARDS APPLICABLE Unless otherwise specified elsewhere in this specification the performance and testing of the meters shall conform to the following Indian International Standards and all related Spec HT LT TVM Des Indian International standards to be read with up to date and latest amendments revisions thereof S Standard No Title No 1 IS 14697 1999 Specifications for AC Static Transformer 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 TEC 6
25. essible from the front and be capable of being monitored with suitable testing equipment The operation indicator if fitted must be visible from 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 KV Ah 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 kV Arh kV Ah 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 Spec HT LT TVM 15 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 3 23 A MAXIMUM DEMAND MD REGISTRATION The meter shall continuously monitor and calculate the average demand in KVA during the integration period set a
26. f 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 Spec HT LT TVM ee ix The meter shall be supplied with a transparent extended terminal block cover ETBC x The meter shall have two push buttons one for forward scrolling and other for reverse scrolling of different parameters available in push button mode 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 The colour of meter shall be orange c Meter cover and extended terminal block cover ETBC should be injection moulded in
27. f 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 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 extended by about 30 mm 5 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
28. for TOD zones through BCS with authentic pass word KWh D KVArh and KVAh energies TOD and kw D and kVA D demand TOD registers shall be provided Eight TOD energy amp demand registers Yes It shall be Possible through BCS with authentic password 12 i li Whether meter is capable to measure and register fundamental energy as well as total energy i e fundamental Harmonics energy Whether BP active Reactive and apparent energy are fundamental or total The offered meters will measure both fundamental Active energy and total active energy Fundamental energy register will be provided on meter display 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 1l iii iv vi vi 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 ii Whether meter functions even if any one phase is not available Whether meter functions even if the spurious signals are injected on the neutral of the meter such as DC signals through diodes etc Yes The meter should functions
29. gic 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 42 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 Spec HT LT TVM 21 li Information and copies of test certificates as in i above in respect of bought out accessories iii List of manufacturing facilities available iv Level of automation achieved and list of areas where manual processing exists v List of areas in manufacturing process where stage inspections are normally carried out for quality control and details of such tests and inspections vi List of test
30. ing 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 1 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 ii Notification Point A stage in the material procurement or workmanship process for which advance notice of the activity is required to facili
31. inimum baud rate of 9600 bps 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 enclosed 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 Numbers of HHU to be procured shall be decided by the purchaser 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 listed in Table A6 1 to A6 7 in enclosed document 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 acc
32. ion points Submission of engineering documents required by the specification The inspection of materials and components on receipt Reference to the contractor s work procedures appropriate to each activity Inspection during fabrication construction Final inspection and test 3 43 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 3 44 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 the work is in progress Ins
33. istribution Name Plate details IAS 1 Transformer Boundary Ring Programmable Parameters A5 2 fencing Interface HT Consumer Event Conditions A6 1 to A6 7 Meters Logging parameters for each of the Capture parameters for event A6 8 event condition shall be selected as applicable Event Log Profile B DEMAND INTEGRATION PERIOD The maximum demand integration period may be set at 15 minute or 30 minute 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 beused for remote access through suitable Modem GPRS CDMA and an Optical port complying with hardware specifications detailed in IEC Spec HT LT TVM 14 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 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 m
34. ithout extra cost The Supplier shall impart necessary training regarding installation and use of the Spec HT LT TVM 9 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 1 Software for reading down loading meter data as well as configuration change activity in meter such as time setting reactive energy for apparent energy calculations reprogramming MD integration period change and TOD reprogramming changing TOD time zones subject to maximum 8 time zones and or change of any one or more TOD time zone timings in the meter 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 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 n
35. ll Quadrants P7 3 13 0 0 Apparent while active import Q1 Q4 P7 3 5 0 0 Apparent while active export Q2 Q3 P7 3 6 0 0 Apparent Net P7 3 14 0 0 Apparent Q1 P7 3 1 0 0 Apparent Q2 P7 3 2 0 0 Apparent Q3 P7 3 3 0 0 Apparent Q4 P7 3 4 0 0 Phase sequence P8 0 0 0 0 Frequency P9 0 0 0 0 Events Data Codes can be defined for each event such as ode Events R phase potential missing Y phase potential missing B phase potential missing R phase CT reversal Y phase CT reversal B phase CT reversal Load imbalance Load unbalance R phase 0 00 APA MPR wW W A TaQ Load unbalance Y phase 10 Load unbalance B phase 11 Overload current 12 Low Power Factor 13 Power failed 14 Unbalance voltage 15 Unbalance voltage R phase 16 Unbalance voltage Y phase 17 Unbalance voltage B phase 18 Invalid voltage inputs occurred 19 CT short 20 CT short R phase 26 Spec HT LT TVM 21 CT short Y phase 22 CT short B phase 23 CT open 24 CT open R phase 25 CT open Y phase 26 CT open B phase 27 Magnet 28 Neutral disturbance Tamper Logics for HT TVM Persistence time 5 Min Restoration Time 1 Min 60 Sec Big pS Annexure B Tamper Events Occurrence Restoration 1 Missing Potenti
36. m demand in KVA Basis of integration period calculation real time or other explain Whether load survey for minimum 60 days with integration period of 15 30 minutes is provided for KWh Import amp KVAh Whether load survey is provided in terms of bar chart as well as in spreadsheet Whether figures of 24 hourly KWH import amp KVAH is available under each date in the load survey if yes explain how 15 30 minutes block integration period Real Time basis Load survey for two parameters kW amp kVA shall be configurable at site Load survey is to be provided for 60 days with integration period of 15 30 minutes Can view on BCS in terms of kWh amp kVAh Yes to be provided in the term of bar chart as well as in spreadsheet Spreadsheet shall be opened in Microsoft Excel to compute 24 hourly energy 10 il iii Whether following additional parameters are made available for viewing printing at the BCS end Meter reading count MD reset count Billing parameters including power on hours and tamper count for last 12 months Billing point cumulative Power on Power off hours for last 12 months Yes to be Provided Spec HT LT TVM 533 iv 11 il iii 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
37. more than two years old from the date of opening of bid The bidder shall furnish two sets of type test reports along with the bid S No Name of Testing Laboratory N P L New Delhi E R T L N New Delhi E R T L W Mumbai E R T L E Kolkata E R T L S Thiruaanandapuram C P R I Bangalore Bhopal ERDA Vadodara NAWAKRWN ES 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 Spec HT LT TVM 20 3 40 FIELD LABORATORY TESTING OF METER The supplie
38. n volatile No of digits in registering memory amp LCD display mechanism b Seven digit and additional Starting current at minimum rated characters for annunciation voltage and unit power factor of displayed parameters c of Ib 0 1 of Ib As per Percentage error at unit power applicable standard factor d 5 of rated current Percentage error at unit 20 to 200 of rated current power factor i Percentage error at 0 5 lag Power As per applicable standard ii factor As per applicable standard e 10 of rated current Percentage error at 0 5 lag 20 to 200 of rated current power factor As per applicable standard Spec HT LT TVM 35 il Percentage error with 5 variation in frequency at As per applicable standard f Unity P F Percentage error with 5 0 5 Lag P F variation in frequency i Change of error due to variation in As per applicable standard li voltage As per applicable standard g At 20 above rated voltage unity Change of error due to P F amp variation in voltage A Rated current 10 rated current At 20 below rated voltage unity As per applicable standard i PF amp As per applicable standard ii Rated current B 50 rated current 10 rated current As per applicable standard i Change of error due to self heating As per applicable standard li at rated current and rated
39. nclosed 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 kV Ah while kW import export cumulative energy 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 Table A5 1 A5 2 and A6 1 to A6 8 respectively of enclosed guideline document 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 guidelines document enclosed as annexure As per guideline of CPRI Banglore Category Parameter group Annexure Table No Substation Feeder Distribution Instantaneous parameters A2 1 Transformer meter Block Load Profile parameters A2 2 IBoundary Ring fencing Interface Instantaneous parameters A3 1 Meters Block Load Profile parameters A3 2 Daily Load Profile parameters A3 3 HT Consumer Meters Instantaneous parameters A4 1 Block Load Profile parameters A4 2 Billing Profile parameters A4 3 Substation Feeder D
40. nd the maximum out of these shall be stored along with date and time when it occurred in the meter memory The maximum registered value shall also be made available on meter display The maximum demand will be computed from the main apparent energy register The rising demand under the current integration period should be displayed alongwith the elapsed time 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 15 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 amp time shall be provided The meter shall log on in the meter memory average value of voltage amp current for 15 30 minutes integration period the maximum demand reset count which should increment by one digit every time the MD is reset 3 25 LOAD SURVEY CAPABILITY amp BILLING
41. od 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 meter 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 guideline document issued by CPRI Banglore Spec HT LT TVM 13 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 polyphase balanced or unbalanced loads a Instantaneous Parameters 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 e
42. on all the time The meter shall have indications for unsatisfactory nonfunctioning malfunctioning of the following as per the requirement under Annex G 19 of IS 14697 a Time and date b Real Time Clock RTC battery c All display segments d Non volatile memory The details of unsatisfactory non functioning malfunctioning of time and date should additionally be recorded in the meter memory and available for viewing at BCS end either directly or through comparison with CMRI date and time The details of self diagnostic capability feature should be furnished by the bidder 3 28 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 phasewise 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 voltage 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 a
43. 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 IS 14697 1999 IEC 62052 11 2003 and annexure A 5 1 of the guideline issued by CPRI Banglore 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 should not fade or otherwise be adversely affected by UV exposure with lapse of time 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 with or without installation of 4 CT in neutral line 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 amp 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 w
44. ot 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 The time taken for downloading the complete meter data should not be more than Five minutes Any future up gradation made by the supplier in any of the above softwares shall also be provided free of cost a Platform 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
45. 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 Atleast 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 side 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 slotless 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
46. pection 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 Spec HT LT TVM 23 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 45 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 46 PACKING
47. ply 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 current circuit at basic current reference frequency and reference temperature shall not exceed 1 VA per phase Spec HT LT TVM 4 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 1 Meters shall be designed and constructed in such a way so as to avoid cau
48. 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 Spec HT LT TVM 10 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 all available makes 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 such as time setting Reactive Energy for Apparent Energy calculation re programming MD integration period change and TOD re programming changing TOD time zones subject to max 8 time zones and or change of any one or more TOD time zone timings in the meter 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 ea
49. r offer Minimum 20 such events 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 Spec HT LT TVM T 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 LTTVM shall record active apparent energy in forward direction even if one or more CT s are reversed The current vector direction shall always be considered as positive import for the computation of 3 phase active energy which shall be added in the main active import energy register and KVAh computation shall be based on reactive lag and lead energy xv The meter should be compatible to GSM GPRS CDMaA technology for remote metering xvi The meter should be compatible to data exchange for electricity meter reading tariff load control as per guideline specification of CPRI Banglore Enclosed 3 18 DISPLAY OF MEASURED VALUES 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 peri
50. r 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 41 FURNISHING OF SAMPLES One sample each of HT TVM of 0 5 S class 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 The sample s should be duly labelled and with full address of the firm with tender enquiry number and date thereupon Sample s should be handed over personally or sent by post before due date of tender opening Sample shall not be received against RR or through G R After finalization of the tender the unsuccessful 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 be sealed with the bidder s seal s The details of lo
51. s 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 CT Short Bypass amp Current Circuit Open Failure The meter shall be capable of detecting and recording occurrences and restoration of shorting bypassing and opening failure of any one or two phases of current circuit when the meter is connected to a 3 phase Spec HT LT TVM T7 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 B 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 herein 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
52. s to how they can be considered superior in maintaining ratio and phase angle for variation of influence quantities and during its service period Details shall be mentioned 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 i ii Details of programmable parameters facilities under the following categories Factory Programmable User Programmable All the feature s available in meter are Factory Programmable except user programmable features Following are user programmable a TOD programming b Time setting 30 Whether meter cover is ultrasonically welded with meter base i Sample with offer Not required US welded ii Sample before commencement and supplies against PO required US welded
53. sing 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 Mount 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 out put device in the form o
54. sy 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 The 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 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 Spec HT LT TVM 11 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
55. t i Whether components on the PCB are All components on the PCB Spec HT LT TVM 30 j Whether all parts that are likely to Yes protected with develop corrosion are effectively conformal coating on protected against corrosion if so electronic component name the type of treatment for this purpose k Whether sealing arrangement Following type of sealing provided on front side of meter for arrangement will be following provided for offered Meter Body meters i Arrangement of two seals Terminal cover can be sealed by ii purchaser on front side M D reset button only if button Arrangement of two seals iii provided which can be sealed by Communication port purchaser Sealing arrangement should be MD reset push button not iv explained provided Arrangement of one seal through optical cover which can be sealed by purchaser 1 Whether name plate provided on All information as meter bear the information as per indicated in column 1 will guideline of CPRI BANGLORE be provided on meter rating plate m Whether meter serial No is Programmed into meter memory Yes to be programmed i for identification through HHU into meter memory for Available on meter display identification through Available thru bar code with HHU ii month amp year Yes required iii Yes required n Insulation resistance As per the CBIP report No 304 IE
56. t 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 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 Spec HT LT TVM 19 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 5 39 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 of the test laboratories mentioned below by the bidder as per relevant standards but test reports shall not be
57. tate 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 1 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 Spec HT LT TVM 22 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 li 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 Notificat
58. trasonically welded meter by the successful bidder xiii Terminal Block a The detachable terminal block shall be moulded type made of non hygroscopic flame retardent 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 TEC 62052 amp IS 14697 and shall be made from best quality phenol formaldehyde or 10 20 glass filled Spec HT LT TVM 6 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 i1i Heat deflection temperature HDT test of 135 deg C 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
59. 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 predespatch inspection or routine test certificates in cases where inspection is waived shall be got approved from the purchaser 3 48 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 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 49 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 furth

SCHEDULE-III (Volume-A) - Jaipur Vidyut Vitran Nigam Limited

Contents

Download Pdf Manuals

Related Search

Related Contents