【英文标准名称】:StandardTestMethodforDeterminingCurrentCarryingCapacityofaConductorasPartofaMembraneSwitchCircuit
【原文标准名称】:测定薄膜开关线路元件导体载流量的标准试验方法
【标准号】:ASTMF1681-2007a
【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】:F01.18
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:电路;载流量;电气元件;薄膜开关;测试;试验
【英文主题词】:circuitresistance;currentcarryingcapacity;membraneswitch;powercapacity
【摘要】:p>Currentcarryingcapacityisusedbydesignersandmanufacturersofelectronicinterfacecircuitrytoensurethatthemembraneswitchcanreliablyhandletheloadsoccurringinnormaluseandunderextremecircumstances.AthoroughunderstandingofCCCallowsmanufacturerstotakeitintoaccountwhendevelopingdesignrulesformembraneswitches.FailuresduetoexceedingtheCCCofacircuitmaytaketheformofasignificantchangeinconductorresistance,insulationbreakdown(shorts),orconductorbreakdown(opens).Sinceanumberofdesignparameters,suchastracewidth,inkfilmthickness,etc.affectthefinaltestresults,anyconclusionsshouldonlybeappliedtospecificdesigns,ratherthantoageneralcombinationofmaterials.Currentcarryingcapacitytestsmaybedestructiveandunitsthathavebeentestedshouldbeconsideredunreliableforfutureuse.Currentcarryingcapacitymaybesignificantlydifferentforstaticloadsanddynamic(thatis,cycling)loads.Failuremodesarealsogenerallydifferent.TheuseofathermocoupletomonitorthetemperatureoftheUUTmaybehelpfultomonitortheprogressofthetest.Initialexpectedstartingcurrentshouldbecalculatedinadvancetopreventdamagetotestequipment.1.1Thistestmethodcoversthedeterminationofthecurrentcarryingcapacityofaconductoraspartofamembraneswitch.1.2Thistestmethodmaybeusedtotestacircuittodestruction,thatis,todetermineitsmaximumcurrentcarryingcapacity,oritmaybeusedtotesttheabilityofacircuittowithstandadesiredcurrentlevel.1.3Thistestmethodappliesonlytostaticconditions,anddoesnotapplytocontactclosurecyclingofamembraneswitchundercurrentload(testmethodforthcoming).1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K31
【国际标准分类号】:19_080;29_120_40
【页数】:3P.;A4
【正文语种】:


【英文标准名称】:Face-to-FaceDimensionsforFlangedGlobe-StyleControlValveBodies(ANSIClasses900,1500,and2500)/Note:Approved1994-02-24.
【原文标准名称】:带法兰球形控制阀(ANSI900、1500和2500级)端间尺寸.注:1994-02-24批准
【标准号】:ANSI/ISA-S75.16-1994
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【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】:
【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】:J16
【国际标准分类号】:23_060_01;25_040_40
【页数】:
【正文语种】:英语