Phase 4 – Wire L.T. Solid State ( Static) Whole Current ... - WBSEDCL

Component Specifications:The meters shall be designed and manufactured using SMT (Surface Mount Technology) components,except for power supply components, LED / LCD etc., which are PTH type.All the material and electronic power components used in the manufacture of the meter shall be ofhighest quality and reputed makes so as to ensure higher reliability, longer life and sustained accuracy.Sl.no.ComponentFunction /Feature1. CurrentElementRequirementE-beam /spot welded C.T. shall beprovided in the phase element and in theneutral with proper isolation.Make / originAny make or originconforming to IS-27052. Measurement /computingchipsThe Measurement / computing chips usedin the meter should be with the Surfacemount type along with the ASICs.3. Memory chips The memory computing chips should notbe affected by the external parameterslike sparking, high voltage spikes orelectrostatic discharges.4. DisplaymodulesThe display modules should be well protectedfrom the external UV radiations. The displayshould be clearly visible over an angle of atleast a cone of 70 o .The construction of themodules should be such that the displayedquantity should not disturbed with the life ofdisplay. The display should be TN typeindustrial grade with extended temperaturerange.Analog Devices,AMS, CyrusLogic, Atmel,Teridian,Maxim,Toshiba,RenasasSiemens,NationalSemiconductor,SAMES, NEC, TexasInstruments, PhillipsAtmel, NationalSemiconductors,Microchip, TeridianTexas Instruments,Phillips,Renasas,HitachiHailing,Holtek, BonafiedTechnologies,Advantek, TrulySemiconductor,Hitachi, SONY,Tianma,Fair Child.5. CommunicationmodulesCommunication modules should becompatible for the RS 232 portsNationalSemiconductors,Hitachi, TexasInstruments,Philips,Hp,Agilent,Everlight.6. Optical port Optical port should be used to transfer themeter data to meter reading instrument. Themechanical construction of the port should besuch to facilitate the data transfer easily.NationalSemiconductors,Hitachi, TexasInstruments, Siemens,Agilent, Philips, Hp,Everlight.19