【英文标准名称】:StandardTestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsUnderDirect-VoltageStress
【原文标准名称】:在直流电压作用下固体电绝缘材料的介电击穿电压及介电强度的标准试验方法
【标准号】:ASTMD3755-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:电气工程;介电强度;试验;电气试验;绝缘;电介质击穿;固体;电绝缘
【英文主题词】:conditioning;creepage;criteriaofbreakdown;dielectricbreakdownvoltage;dielectricstrength;directvoltage;directvoltagestress;electrodes;flashover;rupture;solidinsulatingmaterials;surroundingmedium;voltagecontrol;voltmeter
【摘要】:Thistestmethodisintendedforuseasacontrolandacceptancetestfordirect-voltageapplications.Itmaybeusedalsointhepartialevaluationofmaterialforspecificendusesandasameansfordetectingchangesinmaterialduetospecificdeterioratingcauses.Experienceindicatesthatthebreakdownvalueobtainedwithdirectvoltageusuallywillbeapproximately2to4timesthermsvalueofthe60-Hzalternating-voltagebreakdown.Foranonhomogeneoustestspecimen,thedistributionofvoltagestresswithinthespecimenisdeterminedbyimpedance(largelycapacitive)withalternatingvoltage.Withanincreasingdirectvoltage,thevoltagedistributionmaybestilllargelycapacitive,butdependspartlyontherateofvoltageincrease.Aftersteadyapplicationofdirectvoltagethevoltagedivisionacrossthetestspecimenisdeterminedbyresistance.Thechoiceofdirectoralternatingvoltagedependsuponthepurposeforwhichthebreakdowntestistobeused,andtosomeextent,ontheintendedapplicationofthematerial.AmorecompletediscussionofthesignificanceofdielectricbreakdowntestsisgiveninAppendixX1ofthismethodandofTestMethodD149.ThoseappendixsectionsofTestMethodD149thatrefertoalternatingvoltagearenotapplicabletothedirect-voltagemethod.1.1Thistestmethodcoversthedeterminationofdielectricbreakdownvoltageanddielectricstrengthofsolidelectricalinsulatingmaterialsunderdirect-voltagestress.1.2Sincesomematerialsrequirespecialtreatment,referenceshouldalsobemadetoASTMspecificationsortothetestmethoddirectlyapplicabletothematerialtobetested.SeeTestMethodD149forthedeterminationofdielectricstrengthofelectricalinsulatingmaterialsatcommercialpowerfrequencies.1.3ThistestmethodissimilartoIECPublication243-2.AllproceduresinthistestmethodareincludedinIEC243-2.DifferencesbetweenthistestmethodandIEC243-2arelargelyeditorial.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionstatementsaregiveninSection7.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:6P.;A4
【正文语种】: