【英文标准名称】:StandardTestMethodforProof-VoltageTestingofThinSolidElectricalInsulatingMaterials
【原文标准名称】:薄固体电绝缘材料的耐电压测试用标准试验方法
【标准号】:ASTMD1389-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:电缆;电介质测量;电气工程;电绝缘材料;电气绝缘;电气测试;绝缘件;测试;金属线
【英文主题词】:proof-voltagetesting;thinsolidinsulatingmaterials
【摘要】:Occasionaldielectricdefectsmaybefoundincommerciallyavailableandacceptablethinelectricinsulatingmaterials.Moreoftenthannot,thesematerialsareusedinmultiplelayers.Theprobabilitythatoccasionaldielectricweakspotswillcoincidefromlayertolayerisverysmallbutincreaseswiththefrequencyofoccurrenceofthesedefects.Theproof-voltagetestservestoindicatethefrequencyofoccurrenceofdielectricdefectsandfacilitatestheisolationofareaswherethedefectsareexcessive.Someusesofthinelectricalinsulatingmaterialsrequirethecompleteabsenceofanydielectricdefects.Theproof-voltagetestservestolocatedielectricdefects,makingpossiblerepairorreplacementoftheareainvolvedasmaybedesirable.Intheabsenceofdetectedfaults,thistestmethodisnondestructivetothematerialbeingevaluated,exceptasdiscussedin1.2and4.3.Acriticalpartoftheapparatusandprocedureisthesensitivityandspeedofresponseofthefaultdetectiondevice.Thelatterisusuallyacircuitbreaker.Dependinguponthecharacteristicsofthislattercomponent,itisverylikelythattheresultsobtainedusingdifferentsetsofapparatuswillexhibitsignificantvariability.Itisessentialthatthefaultdetectorrespondonlytofaultcurrentsandthatfaultcurrentsaboveapre-definedvaluealwaysresultinafaultdetectorresponse.Thedesign,adjustment,andoperationoftheapparatusmustavoidbotherroneousfunctioningandanyerroneousnonfunctioningofthefaultdetectorthatmightbetheresultofchargingcurrents,imbalanceofimpedance,orcomponentmalfunction.Theproof-voltagetesthasbeenusedasamanufacturingcontroltestandasanacceptancetesttoguaranteeaminimumlevelofdielectricdefects.Ifthistestmethodisusedasanacceptancetest,takecarethatthefactorsdiscussedin5.4and5.5havebeenconsidered,andifmorethanonesetofapparatusistobeused,thatcomparableresultsareobtainedfromthem.1.1Thistestmethodcoversageneralprocedureforproof-voltagetestingofthinsolidelectricalinsulatingmaterialsatcommercialpowerfrequencies.Itisintendedtoapplyprincipallytoflatmaterialsbutisapplicable,withmodification,toanyformthatpermitscontinuouslypassingthematerialbetweensuitableelectrodes.,1.2Onextremelythinmaterials(usuallylessthan0.05mm(0.002in.)),thetestresultsmaybeinfluencedmorebymechanicaldamagecausedbyconditionsoftestthanbydielectricdefects.Consequently,thistestmethodisnotrecommendedforusewithextremelythinmaterials,unlesspriordeterminationhasestablishedthatthetestresultsarenotinfluencedbymechanicaldamage.1.3Whiletheequipmentandproceduresdescribedinthistestmethodrelatespecificallytotestsmadewithpowerfrequencyacvoltages,similarequipmentandproceduresareusedforproof-voltagetestsusingdcvoltages.Totheextentthatitappliestodctests,thistestmethodcanserveasaguideforpersonsmakingsuchtests.However,onlytestsmadewithpowerfrequencyacvoltagescanbesaidtobeinaccordancewiththistestmethod.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection7.
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:4P.;A4
【正文语种】:


Product Code:SAE MAM2279
Title:Tolerances, Metric, Rubber Products
Issuing Committee:Ams Ce Elastomers Committee
Scope:This specification covers established metric (SI) manufacturing tolerances applicable to non-cellular rubber products ordered to metric dimensions. These tolerances apply to all conditions, unless otherwise noted. The term "exclusive" applies only to the higher figure of the specified range.