Designation:D1830−17StandardTestMethodforThermalEnduranceofFlexibleSheetMaterialsUsedforElectricalInsulationbytheCurvedElectrodeMethod1ThisstandardisissuedunderthefixeddesignationD1830;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodprovidesaprocedureforevaluatingthermalenduranceofflexiblesheetmaterialsbydeterminingdielectricbreakdownvoltageatroomtemperatureafteraginginairatselectedelevatedtemperatures.Thermalenduranceisexpressedintermsofatemperatureindex.1.2Thistestmethodisapplicabletosuchsolidelectricalinsulatingmaterialsascoatedfabrics,dielectricfilms,compos-itelaminates,andothermaterialswhereretentionofflexibilityafterheatagingisofmajorimportance(seeNote4).1.3Thistestmethodisnotintendedfortheevaluationofrigidlaminatematerialsnorforthedeterminationofthermalenduranceofthosematerialswhicharenotexpectedorrequiredtoretainflexibilityinactualservice.1.4Thevaluesstatedinacceptablemetricunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,see10.1.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsa...
