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

2.0 STANDARDS APPLICABLEUnless specified elsewhere in this specification, the performance & testing ofthe meters should conform to the following Indian/International standards, to beread with up to date and latest amendments/revisions thereof as on 90 daysprior to floating of tender.Sl.Standard No.TitleNo.1 IS 13779, 1999 read with itslatest amendmentsSpecification of AC Static Watt hour metersclass 1.0 and 2.02 CBIP Report No.304 readwith latest amendmentsSpecification for AC Static Electrical EnergyMeters3 IS 12346 (1988) Specification for testing equipment for A.C.Static Electrical Energy Meter (latestamendment).4 C.E.A. Regulation No. 502 /70 / CEA / DP&D dt17/03/2006Central Electricity Authority (Installation andOperation of Meters) Regulation, 2006.5 IS 14434 (1998) Polycarbonate Molding and ExtrusionMaterials.3.0 CLIMATIC CONDITIONThe meters to be supplied against this specification should be suitable forsatisfactory continuous operation under the following tropical conditions.Meters should be capable of maintaining required accuracy under hot, tropicaland dusty climatic conditions.i) Maximum Ambient Air Temperature in shade : 55 0 Cii) Minimum Ambient Air Temperature : (-)10 0 C.iii Maximum Relative Humidity : 95%(noncondensing)iv) Minimum Relative Humidity : 10%v) Height above mean sea level : Up to 3000 metersvi) Average number of tropical monsoon per annum : 5 monthsvii) Annual Rainfall : 100 mm to 1500mm4.0 SUPPLY SYSTEMSystemRated voltage (Vref)Rated CurrentRated Frequency1 Phase 2 Wire240 V – Phase to NeutralBasic current:- 5 Amps (lb),Maximum current:- 30 Amps (l max)50 Hz