Designation:D2303−20´1StandardTestMethodsforLiquid-Contaminant,Inclined-PlaneTrackingandErosionofInsulatingMaterials1ThisstandardisissuedunderthefixeddesignationD2303;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.ε1NOTE—Fig.4wasupdatededitoriallyinMay2021.1.Scope*1.1Thesetestmethodscovertheevaluationoftherelativetrackinganderosionresistanceofinsulatingsolidsusingtheliquid-contaminant,inclined-planetest.2Thefollowingtestmethodsalsocanbeusedtoevaluatethetrackingresistanceofmaterials:TestMethodD2132(contaminants:dustandfog)andTestMethodD3638(contaminant:conductiveliquiddrops).1.2Twotrackingandoneerosiontestprocedurearede-scribed:1.2.1A“variablevoltagemethod”toevaluateresistancetotracking.1.2.2A“time-to-trackmethod”toevaluateresistancetotracking.1.2.3Amethodforquantitativedeterminationoferosion(AnnexA1).1.3Whileaparticularcontaminantsolutionisspecified,otherconcentrationsofthesamecontaminant,ordifferentcontaminantsareusedtosimulatedifferentenvironmentalorserviceconditions.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5AlthoughthisstandardandIEC60587-2007,“TestMethodsforEvaluatingResistancetoTrackingandErosionforElectricalInsulatingMaterialsUsedUnderSevereAmbientConditions,”differinapproachordetail,dataobtainedusingeitheraretechnicallyequivalent.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSecti...
