NF K12-202-1992 有价证券.光符识别线.位置和结构(ISO-9144-92)
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【英文标准名称】:Securities.Opticalcharacterrecognitionline.Positionandstructure.
【原文标准名称】:有价证券.光符识别线.位置和结构(ISO-9144-92)
【标准号】:NFK12-202-1992
【标准状态】:现行
【国别】:法国
【发布日期】:1992-04-01
【实施或试行日期】:1992-04-05
【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】:尺寸公差;尺寸;宽度;塑料;规范;长度;名称与符号名称与符号;塑料制品;透明塑料;航空运输;厚度;飞行器设备;飞行器部件
【英文主题词】:Bankingdocuments;Banks;Characterrecognition;Opticalcharacterrecognition;Position;Printlines;Securities;Structures
【摘要】:
【中国标准分类号】:A11;L64
【国际标准分类号】:35_240_40
【页数】:13P;A4
【正文语种】:其他
【英文标准名称】:Packaging-Specificationforedgeprotectors
【原文标准名称】:包装.边缘保护器的规范
【标准号】:BSEN13393-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-06-15
【实施或试行日期】:2001-06-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:材料的物理性质;包装;边;防损坏;尺寸
【英文主题词】:
【摘要】:ThisEuropeanStandardspecifiesthedimensionsandphysicalpropertiesofarangeofedgeprotectorswhichareusedinconjunctionwithtensionalstrapping.
【中国标准分类号】:A82
【国际标准分类号】:55_040
【页数】:10P;A4
【正文语种】:英语
【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】:
