Designation:D669–03AnAmericanNationalStandardStandardTestMethodforDissipationFactorandPermittivityParallelwithLaminationsofLaminatedSheetandPlateMaterials1ThisstandardisissuedunderthefixeddesignationD669;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofthedissi-pationfactorandpermittivityofstifflaminatedsheetandplateinsulatingmaterialsinadirectionparallelwiththelaminations.Thistestmethodprimarilyincludesinformationcoveringthepreparationofthespecimen,anddetailsconcerningtheproce-durerequiredtomakemeasurementsparallelwiththelamina-tionsforthisparticulartypeofmaterial.TheapparatusandgeneraltestprocedureshallbeinaccordancewithTestMeth-odsD150.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Foraspecificwarningstatementsee9.2.2.ReferencedDocuments2.1ASTMStandards:2D150TestMethodsforACLossCharacteristicsandPer-mittivity(DielectricConstant)ofSolidElectricalInsula-tion3.SignificanceandUse3.1Ithaslongbeenrecognizedthatdissipationfactorandpermittivityoflaminatedinsulationasmeasuredinadirectionperpendiculartothelaminationsarenotofthesamemagnitudeasthosemeasuredparalleltothelaminations.Thistestmethodprovidesameansofobtainingdataparalleltothelaminationswheredesignparametersrequirethisinformation.4.SelectionofTestSpecimens4.1Selectmaterialfortestthatwillnotshowobviousdefectsintheareawheretheelectrodesaretobeappliedunlessitisthepurposeofthistesttoshowtheeffectsofsuchdefectsonthepropertiesmeasured.5.SpecimenHolder5.1Constructaframefrom3⁄8-in.(9.5-mm)squaremetalbarsasshowninF...
