ANSI/IEEE C57.12.59-2002 干式变压器全故障电流持续时间指南
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来源:标准资料网
【英文标准名称】:GuideforDry-TypeTransformerThrough-FaultCurrentDuration
【原文标准名称】:干式变压器全故障电流持续时间指南
【标准号】:ANSI/IEEEC57.12.59-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:变压器;电力变压器;故障电流
【英文主题词】:transformers;faultcurrents;powertransformers
【摘要】:Setsforthrecommendationsbelievedessentialfortheapplicationofovercurrentprotectivedevicesthatlimittheexposuretimeofdry-typetransformerstoshort-circuitcurrents.
【中国标准分类号】:K41
【国际标准分类号】:29_180
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforGravimetricMeasurementofPolymericComponentsforWearAssessment
【原文标准名称】:磨损评定用聚合物元件重力测量的标准规程
【标准号】:ASTMF2025-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:F04.22
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:评定;组件;重量分析的;重量分析;质量损失;测量;聚合材料;高聚物;修复装置;外科植入物;磨损
【英文主题词】:
【摘要】:Thispracticeusesaweight-lossmethodofweardeterminationforthepolymericcomponentsormaterialsusedinhumanjointprostheses,usingserumordemonstratedequivalentfluidforlubrication,andrunningunderaloadprofilerepresentativeoftheappropriatehumanjointapplication(1,2).4Thebasisforthisweight-lossmethodforwearmeasurementwasoriginallydeveloped(3)forpin-on-diskwearstudies(PracticeF732)andhasbeenextendedtototalhipreplacements(4,5,ISO14242x2013;2,andGuideF1714)andtofemoro-tibialkneeprostheses(6andISO14243x2013;2),andtofemoro-patellarkneeprostheses(6,7).Whilewearresultsinachangeinthephysicaldimensionsofthespecimen,itisdistinctfromdimensionalchangesduetocreeporplasticdeformation,inthatwearresultsintheremovalofmaterialintheformofpolymericdebrisparticles,causingalossinweightofthespecimen.Thispracticeformeasuringwearofthepolymericcomponentissuitableforvarioussimulatordevices.Thesetechniquescanbeusedwithmetal,ceramic,carbon,polymeric,andcompositecounterfacesbearingagainstapolymericmaterial(forexample,polyethylene,polyacetal,andsoforth).Thus,thisweight-lossmethodhasuniversalapplicationforwearstudiesofhumanjointreplacementswhichfeaturepolymericbearings.Thisweight-lossmethodhasnotbeenvalidatedfornon-polymericmaterialbearingsystems,suchasmetal-metal,carbon-carbon,orceramic-ceramic.Progressivewearofsuchrigidbearingcombinationshasgenerallybeenmonitoredusingalinear,variable-displacementtransducers,orbyotherprofilometrictechniques.1.1Thispracticedescribesalaboratorymethodusingaweight-loss(thatis,mass-loss;seeX1.4)techniqueforevaluatingthewearpropertiesofpolymericmaterialsordeviceswhicharebeingconsideredforuseasbearingsurfacesofhumanjointreplacementprostheses,orboth.Thetestspecimensareevaluatedinadeviceintendedtosimulatethetribologicalconditionsencounteredinthehumanjoint;forexample,useofafluidsuchasbovineserum,orequivalentpseudosynovialfluidshowntosimulatesimilarwearmechanismsanddebrisgenerationasfoundinvivo.
【中国标准分类号】:J43
【国际标准分类号】:11_040_40
【页数】:6P.;A4
【正文语种】:
【英文标准名称】:SmartCardSystems-Interoperablecitizenservices;Userrelatedinformation(basedonDISTINCT)-Part3:Guidelinestocreating,operatingandmaintaininganinteroperablenetwork
【原文标准名称】:智能卡系统.可通用的民用服务设备.用户相关信息(基于DISTINCT).第3部分:建立、运行和维护通用网络的指南
【标准号】:DINCWA13987-3-2001
【标准状态】:作废
【国别】:德国
【发布日期】:2001-02
【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】:终端;机读资料;定义;IC卡;安全要求;交替使用性;识别卡;规范(验收);信息处理;远程通信;网络互连;终端装置;电信
【英文主题词】:Definition;Definitions;ICcards;Identitycards;Informationprocessing;Interoperability;Machine-readablematerials;Networkinterconnection;Safetyrequirements;Specification(approval);Telecommunication
【摘要】:
【中国标准分类号】:L63
【国际标准分类号】:35_110;35_240_15
【页数】:21P;A4
【正文语种】:德语
