Designation:D117−22StandardGuideforSampling,TestMethods,andSpecificationsforElectricalInsulatingLiquids1ThisstandardisissuedunderthefixeddesignationD117;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribesmethodsoftestingandspecifica-tionsforelectricalinsulatingliquidsintendedforuseinelectricalcables,transformers,liquid-filledcircuitbreakers,andotherelectricalapparatuswheretheliquidsareusedasinsulating,orheattransfermedia,orboth.1.2Thepurposeofthisguideistooutlinetheapplicabilityoftheavailabletestmethods.Wheremorethanoneisavailableformeasuringagivenproperty,theirrelativeadvantagesaredescribed,alongwithanindicationoflaboratoryconvenience,precision,(95%confidencelimits),andapplicabilitytospe-cifictypesofelectricalinsulatingliquids.1.3Thisguideisclassifiedintothefollowingcategories:SamplingPractices,PhysicalTests,ElectricalTests,ChemicalTests,andSpecifications.Withineachtestcategory,thetestmethodsarelistedalphabeticallybypropertymeasured.Alistofstandardsfollows:CategorySectionASTMStandardSampling:3D923PhysicalTests:AnilinePoint4D611CoefficientofThermalEx-pansion5D1903Color6D1500Examination:VisualInfrared7D1524,D2144,D2129FlashandFirePoint8D92InterfacialTension9D971PourPointofPetroleumProducts10D97,D5949,D5950ParticleCountinMineralInsulatingOil11D6786RefractiveIndexandSpecificOpticalDispersion12D1218RelativeDensity(SpecificGravity)13D287,D1217,D1298,D1481,D4052SpecificHeat14D2766ThermalConductivity15D2717Viscosity16D445,D2161,D7042ElectricalTests:CategorySectionASTMStandardDielectricBreakdownVoltage17D877,D1816,D3300DissipationFactorandRela-tivePermittivity(DielectricConstant)18D924GassingCharacteristicUnderThermalStress19D7150GassingTendency20D2300Resistivity21D1169ChemicalTests:Acidity,Approximate22D1534Carbon-TypeComposition23D2140Com...
