【正版授权】 IEC 60287-2-1:2015 RLV EN Electric cables – Calculation of the current rating – Part 2-1: Thermal resistance – Calculation of thermal resistance

IEC60287-2-1:2015RLVENElectriccables–Calculationofthecurrentrating–Part2-1:Thermalresistanceisastandardthatspecifiesthecalculationmethodsfordeterminingthethermalresistanceofelectriccables.Itincludesthecalculationofthethermalresistanceofcablesbasedontheirmaterialcomposition,dimensions,andoperatingconditions.Thisstandardprovidesdetailedguidanceonhowtocalculatethethermalresistanceofcablesusingvariousmethodsandprovidestablesandformulasforreference.

Thethermalresistanceofcablesisanimportantfactorindeterminingtheircurrentrating.Itisdeterminedbytheamountofheatgeneratedbythecurrentflowingthroughthecablesandtheabilityofthecablestodissipatethisheat.Ifacablehasahighthermalresistance,itmaylimitthecurrentitcancarry,whichcanaffectitsperformanceandreliability.

Tocalculatethethermalresistanceofacable,thestandardprovidesvariousmethodsthatcanbeuseddependingonthespecificcircumstances.Thesemethodsincludeusingempiricalformulas,calculatingthethermalresistancebasedonthecable’smaterialcompositionanddimensions,andconsideringfactorssuchasambienttemperature,insulationmaterial,andtemperaturemeasurementpoints.

Thestandardalsoprovidestablesandchartsthatcanbeusedforreferenceincalculatingthethermalresistanceofcables.Thesetablesandchartsincludeinformationsuchascommonlyusedmaterials,dimensions,andoperatingconditions,aswellasthecorrespondingthermalresistances.Thesetablesandchartscanbeusedtoquicklyandeasilydeterminethethermalresistanceofaparticularcablebasedonitscharacteristics.

IEC60287-2-1:2015RLVENElectriccables–Calculationofthecurrentrating–Part2-1:Thermalresistance是一个重要的标准，它为计算电缆的热阻提供了指