Designation:D3394−16StandardTestMethodsforSamplingandTestingElectricalInsulatingBoard1ThisstandardisissuedunderthefixeddesignationD3394;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscoverthesamplingandtestingofelectricalinsulatingboards.Theseboardsareporous,usuallyfibroussheetsusedfordielectricandstructuralpurposesinelectricalapparatus.1.2Thesetestmethodsarenotintendedfortestingvulca-nizedfibreormoldedlaminatedsheets.1.3Thesetestmethodsareapplicabletoboardmaterialshavinganominalthicknessofatleast0.030in.(0.76mm).NOTE1—Formaterialsthinnerthan0.030in.(0.76mm)seeTestMethodsD202.1.4Thetestmethodsappearinthefollowingsections:SectionsASTMMethodReferenceApparentDensity18–23AqueousExtractCharacteristics36–42D202AshContent43–46T413CompatibilitywithDielectricLiquids47–52D664,D877,D924,D971,D974,D1169,D1500,D1816,D3455,D3487Compressibility79–85Conditioning11D685DegreeofPolymerization86–89D4243DielectricStrengthinAir53–59D149DielectricStrengthinOil60–65D149,D2413,D3426DimensionsofSheets12–17MoistureContent31–35D644OilAbsorption72–78Reports10Sampling6–9D3636Shrinkage24–30D644TensileProperties66–71D2021.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D149TestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequenciesD202TestMethodsforSamplingandTestingU...
