【英文标准名称】:StandardSpecificationforModifiedConcentric-Lay-StrandedCopperConductorsforUseinInsulatedElectricalCables
【原文标准名称】:绝缘电缆用改进的同芯绞捻铜导线标准规范
【标准号】:ASTMB784-2001(2006)
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:B01.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:copperconductorsforinsulatedwires;coppermodifiedconcentric-lay-stranded;electricalcopperconductors
【摘要】:1.1Thisspecificationcoversbaremodifiedconcentric-lay-strandedconductorsmadefromroundcopperwires,eitheruncoatedorcoatedwithtin,lead,orleadalloyforgeneraluseininsulatedelectricalcables.Theseconductorsshallbeconstructedwithacentralcoreconsistingofnotmorethansevenwires,surroundedbyoneormorelayersofhelicallylaidwires.1.2Forthepurposesofthisspecification,conductorsareclassifiedasfollows(ExplanatoryNote1andNote2):1.2.1ClassBModified8212;Conductorstobeinsulatedwithvariousmaterialssuchasrubber,paper,andcrosslinkpolyethylene.1.2.2ClassCModifiedandClassDModified8212;ConductorswheregreaterflexibilityisrequiredthanisprovidedbyClassBModifiedconductors.1.3Thevaluesstatedininch-poundorSIunitsaretoberegardedseparatelyasstandard.Eachsystemshallbeusedindependentlyoftheother.Combiningthevaluesfromthetwosystemsmayresultinnon-conformancewiththespecification.ForconductorsizesdesignatedbyAWGorkcmilsizes,therequirementsinSIunitsarenumericallyconvertedfromthecorrespondingrequirementsininch-poundunits.ForconductorsizesdesignatedbyAWGorkcmil,therequirementsinSIunitshavebeennumericallyconvertedfromcorrespondingvaluesstatedorderivedininch-poundunits.forconductorsizesdesignatedbySIunitsonly,therequirementsarestatedorderivedinSIunits.1.3.1Fordensity,resitivityandtemperature,thevaluesstatedinSIunitsaretoberegardedasstandard.Note18212;ThesignificantdifferencesinthisspecificationfromSpecificationB8areasfollows:(1)ThecentralcoreispermittedtocontainuptosevenwiresdrawnintotheassemblywithaninfinitelengthoflaywhileSpecificationB8permitsonlyone,and(2)Theconstructionisapplicableonlytostrandedassembliesof19ormorewires.
【中国标准分类号】:K11
【国际标准分类号】:29_060_20
【页数】:5P.;A4
【正文语种】: