Designation:D117−10StandardGuideforSampling,TestMethods,andSpecificationsforElectricalInsulatingOilsofPetroleumOrigin1ThisstandardisissuedunderthefixeddesignationD117;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidedescribesmethodsoftestingandspecifica-tionsforelectricalinsulatingoilsofpetroleumoriginintendedforuseinelectricalcables,transformers,oilcircuitbreakers,andotherelectricalapparatuswheretheoilsareusedasinsulating,orheattransfermedia,orboth.1.2Thepurposeofthisguideistooutlinetheapplicabilityoftheavailabletestmethods.Wheremorethanoneisavailableformeasuringagivenproperty,theirrelativeadvantagesaredescribed,alongwithanindicationoflaboratoryconvenience,precision,(95%confidencelimits),andapplicabilitytospe-cifictypesofelectricalinsulatingoils.1.3Thisguideisclassifiedintothefollowingcategories:SamplingPractices,PhysicalTests,ElectricalTests,ChemicalTests,andSpecifications.Withineachtestcategory,thetestmethodsarelistedalphabeticallybypropertymeasured.Alistofstandardsfollows:CategorySectionASTMMethodSampling:3D923,D2759,D3305PhysicalTests:AnilinePoint4D611CoefficientofThermalEx-pansion5D1903Color6D1500Examination:VisualInfrared7D1524,D2144FlashandFirePoint8D92InterfacialTension9D971,D2285PourPointofPetroleumProducts10D97ParticleCountinMineralInsulatingOil11D6786RefractiveIndex12D1218,D1807RelativeDensity(SpecificGravity)13D287,D1217,D1298,D1481SpecificHeat14D2766CategorySectionASTMMethodThermalConductivity15D2717Turbidity16D6181Viscosity17D88,D445,D2161ElectricalTests:DielectricBreakdownVoltage18D877,D1816,D3300DissipationFactorandRela-tivePermittivity(DielectricConstant)19D924GassingCharacteristicUnderThermalStress20D7150GassingTendency21D2300Resistivity22D1169StabilityUnderElectricalDischarge23D6180ChemicalTests:Acidity,Approximate24D15...
