DIN EN 302094-4-2002 综合业务数字网(ISDN).数字用户信号传输1号系统(DSS1)和信号传输7号系统(SS7)协议.无绳终端移动性(CTM)阶段1的不可达转呼(CFNRc)补充服务.第4部分:抽象试验序列(ATS)和用户的部分测试用协议执行的附加信息(PIXIT)形式规范(英文版本核准本EN302094-4V1.1.1(2002-02)作?
时间:2024-05-10 07:24:58 来源: 标准资料网 作者：标准资料网 阅读：9824
【英文标准名称】:IntegratedServicesDigitalNetwork(ISDN)-DigitalSubscriberSignallingSystemNo.one(DSS1)andSignallingSystemNo.7(SS7)protocols;CallForwardingonNotReachable(CFNRc)supplementaryserviceforCordlessTerminalMobility(CTM)phase1-Par
【原文标准名称】:综合业务数字网(ISDN).数字用户信号传输1号系统(DSS1)和信号传输7号系统(SS7)协议.无绳终端移动性(CTM)阶段1的不可达转呼(CFNRc)补充服务.第4部分:抽象试验序列(ATS)和用户的部分测试用协议执行的附加信息(PIXIT)形式规范(英文版本核准本EN302094-4V1.1.1(2002-02)作?
【标准号】:DINEN302094-4-2002
【标准状态】:现行
【国别】:德国
【发布日期】:2002-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:呼叫传输;连接线;综合服务数字网络;终端装置;数字信号;电信;远程通信;传输协议;信号发送系统;电信设备;试验要求;信号传输;补充业务;呼叫转送;PIXIT;电话网;综合业务数字网
【英文主题词】:
【摘要】:ThisEuropeanstandardspecifiesrequirementsinthetelecommunicationssector.
【中国标准分类号】:M11
【国际标准分类号】:33_080
【页数】:1P;A4
【正文语种】:德语
【英文标准名称】:StandardTestMethodforDeterminingtheTrackingIndexofElectricalInsulatingMaterialsUsingVariousElectrodeMaterials(ExcludingPlatinum)
【原文标准名称】:使用多种电极材料(铂除外)测定电绝缘材料的痕迹指数的标准试验方法
【标准号】:ASTMD5288-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:
【英文主题词】:copperelectrodes;comparativetrackingindex;CTI;TI;TI-Cu;track;tracking;tracking;contamination;trackingindex;trackingresistance;Comparativetrackingindex(CTI);Copperelectrodes;CTI-CU;Tracking,contamination;Trackingsystems;
【摘要】:Electricalequipmenthasthepotentialtofailasaresultofelectricaltrackingofinsulatingmaterialthatisexposedtovariouscontaminatingenvironmentsandsurfaceconditions.AnumberofASTMandothertestshavebeendesignedtoquantifybehaviorofmaterials,especiallyatrelativelyhighvoltages.Thismethodisanacceleratedtestwhichatrelativelylowtestvoltages,providesacomparisonoftheperformanceofinsulatingmaterialsunderwetandcontaminatedconditions.TheTrackingIndexx2014;CopperElectrodestestisnotrelateddirectlytothesuitableoperatingvoltageinservice.Whenorganicelectricalinsulatingmaterialsaresubjectedtoconductioncurrentsbetweenelectrodesontheirsurfaces,manyminutetree-likecarbonaceouspathsortracksaredevelopedneartheelectrodes.Thesetracksareorientedrandomly,butgenerallypropagatebetweentheelectrodesundertheinfluenceoftheappliedpotentialdifference.Eventuallyaseriesoftracksspanstheelectrodegap,andfailureoccursbyshortingoftheelectrodes.Asinothertrackingtestmethods,forexample,IEC112andTestMethodD3638,thistestmethodspecifiestestproceduresthatareintendedtopromotetheformationofsurfacedischargeswhichwillproducecarbontracksinareproduciblemanner.Sincetheseconditionsrarelyreproducetheactualconditionsencounteredinservice,theresultsoftrackingtestscannotbeusedtoinfereitherdirectorrelativeservicebehaviorofamaterialinaspecificdesignapplication.Trackingtestscanbeusedforscreeningpurposesonly.Suitabilityisverifiedthroughtestingofthematerialinactualenduseorunderconditionsthatcloselysimulateactualenduse.TheuseofcopperelectrodesinthistypeoftestwasdevelopedattheUniversityofCincinnati,NEMAlaboratory.ItisfeltbythemembersoftheIndustrialLaminatesSectionofNEMAthatusingcopperelectrodesgivesamorerealisticvalueforatrackingindex,relatedtotheresinsystemusedtoreinforcethesubstrateofalaminate.Ingeneral,trackingtestsmadewithcopperelectrodestendtogivelowervaluesthanplatinumelectrodesinthesametypeoftest.Itisafactthatcopperismorewidelyusedthanplatinumforelectricalconductors.1.1Thistestmethodwasdevelopedusingcopperelectrodestoevaluatethelow-voltage(upto600V)trackingresistanceofmaterialsinthepresenceofaqueouscontaminants.Note18212;Atthistime,onlyindustriallaminateshavebeenexaminedusingthismethodwhichwasdevelopedattheNationalManufacturersElectricalAssociation(NEMA)laboratorylocatedattheUniversityofCincinnati.Itwasfoundthatacloserendpoint(lessscatter)wasobtainedthanwithplatinumelectrodes,andmaterialstestedtendedtoberankedbyresinsystem.1.1.1Itisacceptabletoconsiderotherelectrodematerialsforusewiththistestmethoddependingupontheapplicationoftheinsulatingmaterial.1.2ThistestmethodissimilartoTestMethodD3638,whichdeterminesthecomparativetrackingindexofmaterialsusingplatinumelectrodestoproducethetrackingonthespecimensurface.1.3Thevaluesstatedinmetric(SI)unitsarethestandard.Theinch-poundequivalentsofthemetricunitsareapproximate.1.4Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessment......
【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】:英语
【英文标准名称】:Nickelalloys;flameatomicabsorptionspectrometricanalysis;part7:determinationofaluminiumcontent
【原文标准名称】:镍合金火焰原子吸收光谱法第7部分:铝含量测定
【标准号】:ISO7530-7-1992
【标准状态】:现行
【国别】:国际
【发布日期】:1992-09
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC155
【标准类型】:()
【标准水平】:()
【中文主题词】:金属;有色金属;分析;试验;铝;合金;含量测定;化学分析和试验;原子吸收分光光度测定法;镍合金;有色金属合金;原子吸收光谱测定法;镍
【英文主题词】:Alloys;Aluminium;Analysis;Atomicabsorptionspectrometry;Atomicabsorptionspectrophotometry;Chemicalanalysisandtesting;Determinationofcontent;Metals;Nickel;Nickelalloys;Non-ferrousalloys;Non-ferrousmetals;Testing
【摘要】:Siliconcontentcanbedeterminedintherangeof0,2%(m/m)to1%(m/m).Theprincipleisdissolutionofatestportioninacid,filtrationandaspirationofthetestsolutionintoanitrousoxide-acetyleneflameofanatomicabsorptionspectrometer,combustionofthefilter,volatilizationofsilica,fusionoftheresidue,dissolutionofthemeltindiluteacid,aspirationofthissecondsolutionintoanothersuchflame,measurementoftheabsorbanceoftheresonancelineenergyfromthespectrumofaluminiumandcomparisonwiththatofcalibrationsolutionsat309,3nm.
【中国标准分类号】:H62
【国际标准分类号】:77_120_40
【页数】:4P.;A4
【正文语种】:英语