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【英文标准名称】:OutlineofInvestigationforPowerCableAssembliesIssueNumber1
【原文标准名称】:电力电缆组件的调查大纲.发布编号1
【标准号】:ULSUBJECT2055-1998
【标准状态】:现行
【国别】:美国
【发布日期】:1998-12-21
【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】:1.1Theserequirementscoverpendantandnon-pendantpowercableassemblies("pendantpowercableassemblies"and"powercableassemblies")forinterconnectingorpoweringunitsofacommunicationsorsimilarsystemwheretheassembliesareoutsidetheunitenclosuresandinstalledinareasaccessibleonlytoqualifiedpersons.Theseproductsconsistoffactory-mademultiple-conductorassembliesofconnectorstopowercablesinwhichalloftheconductorsareinsulated.TheyareforconnectionontheloadsideofListedovercurrentdevicesofa-cord-ccircuitsasspecifiedinSection240-21(a)oftheNationalElectricalCode,NFPA70-1999.Theyarenotfordisconnectionunderloadandaresomarked.1.2Powercableassembliesareratedinvoltsandamperes.Theircurrentratingisthemaximumloadinamperesforthecableinfreeairat30~C(86~F),withderatingofthecableampacityasspecifiedinSection400-5or318-11oftheNationalElectricalCode(NFPA70-1999)whereappropriatebecauseofthenumberofcurrent-carryingconductors.1.3PendantpowercableassembliesconsistofListedTypeWportablepowercablesorListedbus-dropcablesfactory-terminatedateachendtoListedfemaleconnectors,wireconnectors,orothermeansformatingtomaleconnectors,power-supplybusbars,orfield-wiringterminals.Matingconnectorsareidentifiedontheassemblyorinaccompanyinginstructions.Forfasteningtothebuildingstructure,asupportdeviceneartheupperendofeachcablekeepstheweightofthecablefromapplyingtensiontoanywiringterminalatthesupplyorloadconnections.Thelengthofcablebetweenthesupportdeviceandtheupperterminationdoesnotexceed6feetor1.83meters.Strainreliefisalsoprovidedateachend.1.4Non-pendantpowercableassembliesconsistofListedTypeTCpowerandcontroltraycablesfactory-terminatedatoneorbothendstoListedmaleorfemaleconnectors,wireconnectors,orotherwiringdevicesformatingtoconnectors,field-wiringterminals,otherterminations,orpower-supplybusbars.Whereoneendisnotterminated,theconductorsareforindividualterminationinthefieldusingwireconnectorsListedfortheconductormaterial(copperoraluminum)andsizeandforthesolidconductorsortheparticulartypeofconductorstranding,numberofstrands,andsizeofstrandsusedinthecableconductors.TheseassembliesareappropdateforuseincabletraysasspecifiedinArticle318oftheNationalElectricalCode,NFPA70-1999.Whereinstalledinanareainwhichtheassemblyisprotectedfromphysicaldamage,nomerethan7feetor2.1metersofthecableistobeexposedbetweenthecabletrayandtheequipment.1.5Aproductthatcontainsfeatures,characteristics,components,materials,orsystemsnewordifferentfromthosecoveredbytherequirementsinthisOutlineofInvestigation,andthatinvolvesariskoffire,electricshock,orinjurytopersonsshallbeevaluatedusingtheappropriateadditionalcomponentandend-productrequirementsasdeterminednecessarytomaintaintheacceptablelevelofsafetyasoriginallyanticipatedbytheintentofthisOutlineofInvestigation.Aproductwhosefeatures,characteristics,components,materials,orsystemsconflictwithspecificrequirementsorprovisionsofthisOutlineofInvestigationcannotbejudgedtocomplywiththisOutlineofInvestigation.Whereconsideredappropriate,revisionofrequirementsshallbeproposedandadoptedinconformancewiththemethodsemployedfordevelopment,revision,andimplementationofthisOutlineofInvestigation.
【中国标准分类号】:K13
【国际标准分类号】:
【页数】:8
【正文语种】:英语