Designation:D7895/D7895M−19StandardTestMethodforThermalEnduranceofCoatingPowdersUsedforPowderCoatingInsulationSystems1ThisstandardisissuedunderthefixeddesignationD7895/D7895M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodprovidesaprocedureforevaluatingthermalenduranceofcoatingpowdersbydeterminingthelengthofagingtimeatselectedelevatedtemperaturesrequiredtoachievedielectricbreakdownatroomtemperatureatapre-determinedproofvoltage.Thermalenduranceisexpressedintermsofatemperatureindex.1.2Thistestmethodisapplicabletoinsulatingpowdersusedoverasubstratematerialofsteel.1.3Units—ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemarenotnecessarilyexactequiva-lents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsislikelytoresultinnon-conformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection7.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequenciesD1711TerminologyRelatingtoElectricalInsulationD5423SpecificationforForced-ConvectionLaboratoryOv-ensforEvaluationofElectricalInsulation2.2IEEEDoc...
