Designation:D3755−14StandardTestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsUnderDirect-VoltageStress1ThisstandardisissuedunderthefixeddesignationD3755;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofdielectricbreakdownvoltageanddielectricstrengthofsolidelectricalinsulatingmaterialsunderdirect-voltagestress.1.2Sincesomematerialsrequirespecialtreatment,refer-enceshallalsobemadetoASTMspecificationsortothetestmethoddirectlyapplicabletothematerialtobetested.SeeTestMethodD149forthedeterminationofdielectricstrengthofelectricalinsulatingmaterialsatcommercialpowerfrequen-cies.1.3ThistestmethodissimilartoIECPublication243-2.AllproceduresinthistestmethodareincludedinIEC243-2.DifferencesbetweenthistestmethodandIEC243-2arelargelyeditorial.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecificprecautionstatementsaregiveninSection7.2.ReferencedDocuments2.1ASTMStandards:2D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequenciesD176TestMethodsforSolidFillingandTreatingCom-poundsUsedforElectricalInsulation(Withdrawn2013)3D877TestMethodforDielectricBreakdownVoltageofInsulatingLiquidsUsingDiskElectrodesD1711TerminologyRelatingtoElectricalInsulationD2436SpecificationforForced-ConvectionLaboratoryOv-ensforElectricalInsulation(Withdrawn1994)3D3487SpecificationforMineralInsulatingOilUsedinElectricalApparatus2.2ANSIStandard:4ANSIC68.1TechniquesforDielectricTests,IEEEStandardNo.4.2.3IECStandard:IEC243-2Methodsoftestforelectri...
