Designation:D4872−14(Reapproved2020)StandardTestMethodforDielectricTestingofWireandCableFillingCompounds1ThisstandardisissuedunderthefixeddesignationD4872;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofdissipationfactor,permittivity(dielectricconstant),andacvolumeresis-tivityofwireandcablefillingcompoundsandrelatedmaterialsthataresolidatroomtemperature,butcapableofbeingmeltedatelevatedtemperature.1.2Whenevertwosetsofvaluesarepresented,indifferentunits,thevaluesinthefirstsetarethestandard,whilethoseinparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection7.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:23D150TestMethodsforACLossCharacteristicsandPermit-tivity(DielectricConstant)ofSolidElectricalInsulationD257TestMethodsforDCResistanceorConductanceofInsulatingMaterialsD1321TestMethodforNeedlePenetrationofPetroleumWaxesD1711TerminologyRelatingtoElectricalInsulationD6054PracticeforConditioningElectricalInsulatingMate-rialsforTesting(Withdrawn2012)43.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD1711.4.SummaryofTestMethod4.1Placeameasuredvolumeofmeltedsample,freeofentrappedair,intoalevelpreheatedspecimendish.Allowthespecimentoc...
