IEC 60287-2-1 Edition 1.2-2006 电缆.额定电流的计算.第2-1部分:热阻.热阻计算
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【英文标准名称】:Electriccables-Calculationofthecurrentrating-Part2-1:Thermalresistance-Calculationofthermalresistance
【原文标准名称】:电缆.额定电流的计算.第2-1部分:热阻.热阻计算
【标准号】:IEC60287-2-1Edition1.2-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC20A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆;尺寸选定;电气工程;高压引线;数学计算;电阻器;热阻
【英文主题词】:Cables;Dimensioning;Electriccables;Electricalengineering;Hightensionleads;Mathematicalcalculations;Resistors;Thermalresistance
【摘要】:ThissectionofIEC60287issolelyapplicabletotheconditionsofsteady-stateoperationofcablesatallalternatingvoltages,anddirectvoltagesupto5kV,burieddirectlyintheground,inducts,introughsorinsteelpipes,bothwithandwithoutpartialdrying-outofthesoil,aswellascablesinair.Theterm"steadystate"isintendedtomeanacontinuousconstantcurrent(100%loadfactor)justsufficienttoproduceasymptoticallythemaximumconductortemperature,thesurroundingambientconditionsbeingassumedconstant.Thissectionprovidesformulaeforthermalresistance.Theformulaegivenareessentiallyliteralanddesignedlyleaveopentheselectionofcertainimportantparameters.Thesemaybedividedintothreegroups:–parametersrelatedtoconstructionofacable(forexample,thermalresistivityofinsulatingmaterial)forwhichrepresentativevalueshavebeenselectedbasedonpublishedwork;–parametersrelatedtothesurroundingconditionswhichmayvarywidely,theselectionofwhichdependsonthecountryinwhichthecablesareusedoraretobeused;–parameterswhichresultfromanagreementbetweenmanufactureranduserandwhichinvolveamarginforsecurityofservice(forexample,maximumconductortemperature).
【中国标准分类号】:K13
【国际标准分类号】:29_060_20
【页数】:79P;A4
【正文语种】:英语
【原文标准名称】:电缆.额定电流的计算.第2-1部分:热阻.热阻计算
【标准号】:IEC60287-2-1Edition1.2-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC20A
【标准类型】:()
【标准水平】:()
【中文主题词】:电缆;尺寸选定;电气工程;高压引线;数学计算;电阻器;热阻
【英文主题词】:Cables;Dimensioning;Electriccables;Electricalengineering;Hightensionleads;Mathematicalcalculations;Resistors;Thermalresistance
【摘要】:ThissectionofIEC60287issolelyapplicabletotheconditionsofsteady-stateoperationofcablesatallalternatingvoltages,anddirectvoltagesupto5kV,burieddirectlyintheground,inducts,introughsorinsteelpipes,bothwithandwithoutpartialdrying-outofthesoil,aswellascablesinair.Theterm"steadystate"isintendedtomeanacontinuousconstantcurrent(100%loadfactor)justsufficienttoproduceasymptoticallythemaximumconductortemperature,thesurroundingambientconditionsbeingassumedconstant.Thissectionprovidesformulaeforthermalresistance.Theformulaegivenareessentiallyliteralanddesignedlyleaveopentheselectionofcertainimportantparameters.Thesemaybedividedintothreegroups:–parametersrelatedtoconstructionofacable(forexample,thermalresistivityofinsulatingmaterial)forwhichrepresentativevalueshavebeenselectedbasedonpublishedwork;–parametersrelatedtothesurroundingconditionswhichmayvarywidely,theselectionofwhichdependsonthecountryinwhichthecablesareusedoraretobeused;–parameterswhichresultfromanagreementbetweenmanufactureranduserandwhichinvolveamarginforsecurityofservice(forexample,maximumconductortemperature).
【中国标准分类号】:K13
【国际标准分类号】:29_060_20
【页数】:79P;A4
【正文语种】:英语
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