Designation:D4733−17StandardTestMethodsforSolventlessElectricalInsulatingVarnishes1ThisstandardisissuedunderthefixeddesignationD4733;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thesetestmethodscoversolventlessvarnishesusedprimarilyaselectrical,mechanical,andenvironmentalprotec-tionforelectricalequipment.1.2Thesetestmethodsareusedonsolventlessvarnishesthatareappliedbydipping(atatmosphericpressureconditionsorundervacuumorothercertainpressure),spraying,orbrushingforthepurposeofimpregnatingorsealingelectricalequipment.Thefollowingtestmethodsareincluded:PropertyTests(Uncured):SectionDensity7FlashPoint8GelTime9MonomerContent10RheologicalProperties(Non-Newtonian)11RotationalViscosity12PerformancePropertyTests(cured):BondStrength13CoatingThickness14DielectricStrength15DielectricStrength-UsingMetalPanels16PermittivityandDissipationFactor17Build181.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specifichazardstatementsaregivenin8.3,15.5.1,and15.5.2.NOTE1—ThistestmethodisrelatedtoIEC60455.Sincebothmethodscontainmultipletestprocedures,manyproceduresaretechnicallyequiva-lentwhileothersdiffersignificantly.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D93TestMethodsforFlash...
