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

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

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

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Component <strong>Specification</strong>s:The meters shall be designed and manufactured using SMT (Surface Mount Technology)components, except <strong>for</strong> power supply components, LED / LCD etc., which are PTH type.All the material and electronic power components used in the manufacture of the meter shallbe of highest quality and reputed makes so as to ensure higher reliability, longer life andsustained accuracy.Sl.no.ComponentFunction / FeatureRequirement1. Current Element E-beam /spot welded shunts shall beprovided in the phase element and C.T.in the neutral. Alternatively, both thecurrent elements (phase & neutral) shallhave Shunts with proper isolation.Make / originAny make or origincon<strong>for</strong>ming toIS-27052. Measurement /computing chipsThe Measurement / computing chipsused in the meter should be with theSurface mount type along with theASICs.Analog Devices, AMS,Cyrus Logic, Atmel,SAMES, NEC, TexasInstruments,Phillips,Teridian3. Memory chips The memory computing chips shouldnot be affected by the externalparameters like sparking, high voltagespikes or electrostatic discharges.4. Display modules The display modules should be wellprotected from the external UVradiations. The display should be clearlyvisible over an angle of at least a coneof 70 o .The construction of the modulesshould be such that the displayedquantity should not disturbed with thelife of display. The display should be TNtype industrial grade with extendedtemperature range.5. CommunicationmodulesCommunication modules should becompatible <strong>for</strong> the RS 232 ports6. Optical port Optical port should be used to transferthe meter data to meter readinginstrument. The mechanicalconstruction of the port should be suchto facilitate the data transfer easily.Atmel, NationalSemiconductors,Microchip, TexasInstruments, Phillips,Hitachi, Teridian ,STHaijing, Holtek,BonafiedTechnologies,Advantek, TrulySemiconductor,Hitachi, SONYNationalSemiconductors,Hitachi, TexasInstruments, Philips,HP, Agilent, Everlight,FairchildNationalSemiconductors,Hitachi, TexasInstruments, Siemens,Agilent, Philips,Hp,Everlight,Siemens

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