【英文标准名称】:Textilefloorcoverings-TestsusingtheLissonTretradMachine.
【原文标准名称】:铺地织物.用Lisson踏轮机的试验
【标准号】:NFG35-046-2007
【标准状态】:现行
【国别】:法国
【发布日期】:2007-06-01
【实施或试行日期】:2007-06-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:W56
【国际标准分类号】:59_080_60
【页数】:18P;A4
【正文语种】:其他


【英文标准名称】:StandardTestMethodforComparativeTrackingIndexofElectricalInsulatingMaterials
【原文标准名称】:电绝缘材料比较漏电痕迹指数的标准试验方法
【标准号】:ASTMD3638-2007
【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】:电气工程;电气绝缘;电气测试;绝缘件;测试;跟踪系数
【英文主题词】:CTI;comparativetrackingindex;tracking;contamination;trackingresistance
【摘要】:Electricalequipmentcanfailasaresultofelectricaltrackingofinsulatingmaterialthatisexposedtovariouscontaminatingenvironmentsandsurfaceconditions.ThereareanumberofASTMandothertestsdesignedtoquantifybehaviorofmaterials,especiallyatrelativelyhighvoltages.Thismethodisanacceleratedtestwhichatrelativelylowtestvoltages,providesacomparisonoftheperformanceofinsulatingmaterialsunderwetandcontaminatedconditions.Thecomparativetrackingindexisnotrelateddirectlytothesuitableoperatingvoltageinservice.Whenorganicelectricalinsulatingmaterialsaresubjectedtoconductioncurrentsbetweenelectrodesontheirsurfaces,manyminutetree-likecarbonaceouspathsortracksaredevelopedneartheelectrodes.Thesetracksareorientedrandomly,butgenerallypropagatebetweentheelectrodesundertheinfluenceoftheappliedpotentialdifference.Eventuallyaseriesoftracksspanstheelectrodegap,andfailureoccursbyshortingoftheelectrodes.Theconditionsspecifiedhereinareintended,asinothertrackingtestmethods,toproduceaconditionconducivetotheformationofsurfacedischargesandpossiblesubsequenttracking.Testconditionsarechosentoreproduciblyandconvenientlyaccelerateaprocess;forthisreason,theyrarelyreproducethevariedconditionsfoundinactualservice.Therefore,whiletrackingtestsservetodifferentiatematerialsundergivenconditions,resultsoftrackingtestscannotbeusedtoinfereitherdirectorcomparativeservicebehaviorofanapplicationdesign.Rather,trackingtestresultsprovideatoolforjudgingthesuitabilityofmaterialsforagivenapplication.Thesuitabilitycanonlybeverifiedthroughtestingthedesigninactualenduseorunderconditionswhichsimulateenduseascloselyaspossible.1.1Thistestmethodevaluatesinashortperiodoftimethelow-voltage(upto600V)trackresistanceorcomparativetrackingindex(CTI)ofmaterialsinthepresenceofaqueouscontaminants.1.2Thevaluesstatedinmetric(SI)unitsaretoberegardedasstandard.Theinch-poundequivalentsofthemetricunitsareapproximate.1.3ThisstandardistechnicallyequivalenttotheversionofIECPublication112citedin.However,the2007versionofIEC60112FourthEditionyieldsnumericalCTIvaluesthatareverylikelytodiffersignificantlyfromthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:5P.;A4
【正文语种】: