【英文标准名称】:Outlineofinvestigationforspecialpurposeground-faultcircuit-interrupters
【原文标准名称】:专用接地故障电路中断器测试大纲
【标准号】:ULSUBJECT943C-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011-01-18
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Theserequirementscoverground-faultcircuit-interruptersintendedforuseinoneofthefollowingapplications:a)Wherethevoltagetogroundisgreaterthan150voltsandequipmentgroundingordoubleinsulationisrequiredbytheNationalElectricalCode,ANSI/NFPA70,b)Wherethevoltagetogroundis150voltsorlessandequipmentgroundingordoubleinsulationisprovided,buttheuseofaClassAground-faultcircuit-interrupterisnotpractical.1.2Ground-faultcircuit-interruptersaddressedbytheserequirementsaredividedintothreeclasses,ClassC,DandE,baseduponvoltageratingandthecharacteristicsofthegroundingcircuit.Someareintendedforuseincircuitswheregroundingisnotprovidedtotheloadbutdouble-insulationisprovided.1.3Theseground-faultcircuit-interruptersareintendedtobeappliedoncircuitsasshowninFigure1.1.TherequirementsforClassAground-faultcircuit-interruptersareintheStandardforGround-FaultCircuit-Interrupters,UL943.
【中国标准分类号】:K31
【国际标准分类号】:
【页数】:22P.;A4
【正文语种】:英语