【英文标准名称】:StandardGuideforMeasuringElectricalContactIntermittences
【原文标准名称】:测量电接触中断的标准指南
【标准号】:ASTMB854-1998(2010)e1
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:B02.11
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:短时间错误率;电气噪音;可靠度;阻力;短时间错误几率;电路不连续性;闭合开关触点;电气测量;机电继电器;环境应力;间歇性;示波器;继电器;可靠性;耐力;插拔式连接器;短时间间歇性;滑环
【英文主题词】:biterrorrate;electricalnoise;reliability;resistance;Biterrorrate;Circuitdiscontinuities;Closedswitchcontacts;Electricalmeasurements;Electromechanicalrelays;Environmentalstress;Intermittences;Oscilloscope;Relays;Reliability;Resistance;Separable
【摘要】:Thisguidesuggeststechniquestoevaluateintermittencesinacontactpairwhileitissubjectedtosimulatedoractualenvironmentalstress.Suchmeasurementsareavaluabletoolinpredictingcircuitperformanceunderthesestressconditionsandindiagnosingobservedproblemsincircuitfunctionundersuchconditions.Thisdocumentisintendedtoprovidesomegeneralguidanceonthebestavailablepracticesfordetecting,quantifying,characterizingandreportingshortdurationintermittencesincircuitscontainingelectricalcontacts.Certainenvironmentalstressessuchasmechanicalshock,vibrationortemperaturechangemaycauseintermittences.Thesemeasurementproceduresincludemethodsapplicabletocontactsoperatingundervariousconditionsintestingorinservice.PracticeB615definesmethodsformeasuringelectricalcontactnoiseinslidingelectricalcontacts.IncontrastGuideB854providesguidancetothevariousmethodsformeasuringsimilarphenomenainstaticcontacts.1.1Thetechniquesdescribedinthisguideapplytoelectricalcircuitsthatincludeoneormoreelectricalcontactsindevicessuchassliprings,separableconnectors,electromechanicalrelaysorclosedswitchcontacts.Theusershoulddetermineapplicabilityforotherdevices.1.2Therangeoftechniquesdescribedapplytocircuitdiscontinuities(intermittences)ofdurationsrangingfromapproximately10nanosecondstoseveralsecondsandofsufficientmagnitudetocausealterationofthecircuitfunction.Extensionoftheguidetoshorterdurationeventsmaybepossiblewithsuitableinstrumentation.EventsoflongerdurationmaybemonitoredbytechniquesfordcmeasurementssuchasthosedescribedinTestMethodsB539orbyadaptationofmethodsdescribedinthisguide.1.3Thetechniquesdescribedinthisguideapplytoelectricalcircuitscarryingcurrentstypicalofsignalcircuits.Suchcurrentsaregenerallylessthan100ma.Extensionofthesetechniquestocircuitscarryinglargercurrentsmaybepossible,buttheusershouldevaluateapplicabilityfirst.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.ItistheresponsibilityoftheuserofthisstandardtobecomefamiliarwithallhazardsincludingthoseidentifiedintheappropriateMaterialSafetyDataSheet(MSDS)forthisproduct/materialasprovidedbythemanufacturer,toestablishappropriatesafetyandhealthpractices,anddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K04
【国际标准分类号】:29_120_20
【页数】:4P.;A4
【正文语种】: