Designation:D1275–03315/98StandardTestMethodforCorrosiveSulfurinElectricalInsulatingOils1ThisstandardisissuedunderthefixeddesignationD1275;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenadoptedforusebygovernmentagenciestoreplaceMethod5328-2ofFederalTestMethodStandardNo.791b.ThisstandardwasadoptedasanASTM-IPStandard.1.Scope1.1Thistestmethoddescribesthedetectionofcorrosivesulfurcompounds(bothinorganicandorganic)inelectricalinsulatingoilsofpetroleumorigin.1.2Mineralinsulatingoilsmaycontainsubstancesthatcausecorrosionundercertainconditionsofuse.Thistestmethodisdesignedtodetectthepresenceoffreesulfurandcorrosivesulfurcompoundsbysubjectingcoppertocontactwithoilunderprescribedconditions.1.3Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareincludedforinformationalpur-poses.1.4Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D130TestMethodforDetectionofCopperCorrosionfromPetroleumProductsbytheCopperStripTarnishTest2E11SpecificationforWire-ClothandSievesforTestingPurposes32.2OtherDocument:ANSIB74.10GradingofAbrasiveMicrogrits43.SignificanceandUse3.1Inmostoftheiruses,insulatingoilsarecontinuallyincontactwithmetalsthataresubjecttocorrosion.Thepresenceofcorrosivesulfurcompoundswillresultindeteriorationofthesemetals.Theextentofdeteriorationisdependentuponthequantityandtypeofcorrosiveagentandtimeandtemperaturefactors.Detectionoftheseundesirableimpurities,eventhoughnotintermsofquantitativevalues,isameansforrecognizingthehazardinvolved.4.Apparatus4.1Bath—Ahot-airovenoroilbathprovidedwithsuitablemeansofheatingto,andco...
