Designation:D3809–01StandardTestMethodsforSyntheticDielectricFluidsForCapacitors1ThisstandardisissuedunderthefixeddesignationD3809;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscovertestingsyntheticdielectricfluidscurrentlyinuseforcapacitors.Themethodsaregener-allysuitableforspecificationacceptance,factorycontrol,refereetesting,andresearch.Theirapplicabilitytofuturefluidshasnotbeendetermined.1.2Thescopeofsomeofthetestmethodslistedhereapplytopetroleumoils,buthavebeenfoundsuitableforsyntheticfluids.1.3FormethodsrelatingtopolybutenefluidsrefertoSpecificationD2296.1.4FormethodsrelatingtosiliconefluidsrefertoTestMethodsD2225.1.5Alistofpropertiesandstandardsareasfollows:PropertyMeasuredSectionASTMTestMethodPhysical:Coefficientofthermalexpansion6D1903Flashpoint7D92Pourpoint8D97Refractiveindex9D1218RelativeDensity/Specificgravity10D1298Viscosity11D445Chemical:Acidnumber12D664Watercontent13D1533Electrical:Relativepermittivity14D924Dielectricstrength15D877D1816Dissipationfactor16D9241.6Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D92TestMethodforFlashandFirePointsbyClevelandOpenCup2D97TestMethodforPourPointofPetroleumProducts2D445TestMethodforKinematicViscosityofTransparentandOpaqueLiquids(andtheCalculationofDynamicViscosity)2D664TestMethodforAcidNumberofPetroleumProductsbyPotentiometricTitration2D877TestMethodforDielectricBreakdownVoltageofInsulatingLiquidsUsingDiskElectrodes3D923PracticeforSamplingElectricalInsulatingLiquids3D924TestMethodforDissipationFactor(orPowerFactor)andRelativePermittivity(DielectricCons...
