Designation:D1351−20StandardSpecificationforThermoplasticPolyethyleneInsulationforElectricalWireandCable1ThisstandardisissuedunderthefixeddesignationD1351;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisspecificationcoversathermoplasticinsulationwhichconsistssubstantiallyofpolyethylene.1.2Thistypeofinsulationisconsideredsuitableforuseonwireorcablethatwillbeusedforcontinuousoperationatconductortemperaturesupto75°Cwithamaximumconduc-torsizeof1000kcmil(507mm2).Themaximumvoltageratingshallnotexceed35000Vforpowerapplicationor9000Vforserieslighting.1.3Inmanyinstancestheinsulationmaterialcannotbetestedunlessithasbeenformedaroundaconductor.Therefore,testsdoneoninsulatedwireorcableinthisspecificationaresolelytodeterminetherelevantpropertyoftheinsulationmaterialandnottotesttheinsulatedconductororcompletedcable.1.4Whenevertwosetsofvaluesarestated,indifferentunits,thevaluesinthefirstsetareregardedasstandard,whilethevaluesinparenthesesareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1248SpecificationforPolyethylenePlasticsExtrusionMaterialsforWireandCableD1711TerminologyRelatingtoElectricalInsulationD2308SpecificationforThermoplasticPolyethyleneJacketforElectricalWireandCableD2633TestMethodsforThermoplasticInsulationsandJacketsforWireandCableD3349TestMethodforAbsorptionCoefficientofEthylenePolymerMaterialPigmentedwithCarbonBlack2.2ICEAStandard:3T-24-380GuideforPartial-DischargeProcedure3.Terminology3.1Definitions:3.1.1RefertoTe...
