Technical Specification for A.C. Single Phase, 2 Wire ... - WBSEDCL

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During the manufacturing of the meters the following checks shall be carried out.i) Meter frame dimensions tolerances shall be minimum.ii) The assembly of parts shall be done with the help of jigs and fixtures so thathuman errors are eliminated.iii) The meters shall be batch tested on automatic, computerized test bench andthe results shall be printed directly without any human errors.The Bidder shall invariably furnish the following information along with his bid,failing which his bid shall be liable for rejection. Information shall be separatelygiven for individual type of material offered.‣ Statement giving list of important raw materials, names of subsuppliersfor the raw materials, list of standards according to which theraw materials are tested, list of tests normally carried out on rawmaterials.‣ Information and copies of test certificates in respect of bought outaccessories.‣ List of manufacturing facilities available.‣ Level of automation achieved and lists of areas where manual processingexists.‣ List of areas in manufacturing process, where stage inspections arenormally carried out of quality control and details of such tests andinspections.‣ List of testing equipment available with the bidder for final testing ofequipment specified and test-plant limitations, if any, vis-à-vis type, specialacceptance and routine tests specified in the relevant standards and thisspecification. These limitations shall be very clearly brought out in scheduleof deviations.The manufacturer laboratory must be well equipped for testing of the meters.They must have computerized standard power source and standard equipmentcalibrated not later than a year (or as per standard practice). The details of testingfacilities available for conductinga) The routine tests.b) Acceptance tests shall be furnished with the bid.7. MANUFACTURING ACTIVITIESAll the materials, electronics and power components, ICs used in the manufactureof the meter shall be of highest quality and reputed make to ensure higherreliability, longer life and sustained accuracy.The manufacturer should use Application Specific Integrated Circuit (ASIC) orMicro controller for metering functions.
The electronic components shall be mounted on the printed circuit board usinglatest Surface Mounted Technology (SMT) except power components bydeploying automatic SMT pick and place machine and re flow solder process. Theelectronic components used in the meter shall be of high quality and there shall beno drift in the accuracy of the meter at least up to 10 years. Further, the Biddershould own or have assured access (through hire, lease or sub-contract) of thementioned facilities. The PCB material should be of glass epoxy FR-4 gradeconforming to relevant standards.All insulating materials used in the construction of meters shall be nonhygroscopic,non-aging and of tested quality. All parts that likely to developcorrosion shall be effectively protected against corrosion by providing suitableprotective coating.Quality should be ensured at the following stages:At PCB manufacturing stage, each board shall be subjected to bare board testing.At insertion stage, all components should undergo testing for conforming to designparameters and orientation.Complete assembled and soldered PCB should undergo functional testing usingtest equipments (testing jig).Prior to final testing and calibration, all meters shall be subjected toaccelerated ageing test to eliminate infant mortality, i.e., meters are to bekept in ovens for 72 hours at 55 deg. Centigrade temperature & atmospherichumid condition. After 72 hours meters should work correctly. Facilities /arrangement for conducting ageing test should be available with themanufacturer.The calibration of meters shall be done in-house.The bidder should submit the list of components used in the meter along with theoffer.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 areprocured. The bidder shall also give the details of quality assurance proceduresfollowed by him in respect of the bought-out items.The details of testing facilities available for conducting the routine and acceptancetests and other special tests on the meter shall be furnished with the bid. Thefacility available if any for conducting type test may also be furnished.8. DOCUMENTATION :Operating manual should be provided inside each of the Pilfer Proof Meter Boxesand 20 no of additional quantity to be supplied to DTD store.One set of routine test certificates shall accompany each dispatchconsignment.The acceptance test certificates in case pre-dispatch inspection or a routine testcertificate in cases where inspection is waived has to be approved by thepurchaser.
Page 1 and 2: WEST BENGAL STATE ELECTRICITY DISTR
Page 3 and 4: 5.0 POWER FACTOR RANGEThe meter sho
Page 5 and 6: 11.5 All insulating material used i
Page 7 and 8: vii) Meter should record energy wit
Page 9 and 10: A) Auto Display Mode :The following
Page 11 and 12: This BCS should have, amongst other
Page 13 and 14: General Requirements1. GUARANTEED T
Page 15 and 16: Shunt test by applying 100 Amps con
Page 17: a) While submitting the samples and
Page 21 and 22: Component Specifications:The meters
Page 23 and 24: ANNEXURE - IGUARANTEED TECHNICAL PA
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Page 31 and 32: ANNEXURE - IVSl.No.1LIST OF DOCUMEN
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Technical Specification for A.C. Single Phase, 2 Wire ... - WBSEDCL

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