UL 6420 BULLETIN-2008 用于系统绝缘和作为单一装置的设备

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【英文标准名称】:EquipmentusedforsystemisolationandRatedasaSingleUnit
【原文标准名称】:用于系统绝缘和作为单一装置的设备
【标准号】:UL6420BULLETIN-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008-05-21
【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】:1.1.1.1Thisstandardappliestoisolatingequipmentincorporatingelectromechanicalcontactorsremotelycontrolledandmonitoredtoprovideremoteisolationstatusindicationwithadefinedintegritylevel.Thisequipmentisintendedforuseasanadditionalisolatingmeansontheloadsideoftherequiredsupply-disconnectingdeviceandovercurrentprotection.Thisstandardappliestoisolatingequipmentthatistobeusedincircuitsofwhichtheratedvoltagedoesnotexceed1000voltsacor1500voltsdc.1.1.1.2TheSystemIsolationEquipmentisexpectedtobeusedbothasameansforremovalofpowerforpreventionofunexpectedstart-upofastoppedmachineandasanisolatortoprovideprotectionfromelectricshockbyensuringtheremovalofelectricalenergy.1.1.1.3ThisequipmentisintendedforinstallationinaccordancewiththeNationalElectricalCode,NFPA70andtheElectricalStandardforIndustrialMachinery,NFPA79.NOTE–ReferencetoSystemIsolationEquipmentisfoundinArticle430.109(a)(7)ofNFPA70;in5.5,DevicesforDisconnecting(Isolating)ElectricalEquipment,ofNFPA79;andintheStandardforSafetyofMachinery–ElectricalEquipmentofMachines–Part1:GeneralRequirements,IEC60204-1.1.1.1.4TheSystemIsolationEquipmentisnotintendedtofulfillthefunctionofamotorstarterorothermotioncontroldevice.
【中国标准分类号】:K15
【国际标准分类号】:
【页数】:74P.;A4
【正文语种】:英语