Product Code:SAE AMS5785
Title:Steel Welding Electrode, Covered, Corrosion and Heat Resistant 28.5cr 9.5ni (Cancelled Mar 1999)
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant steel in the form of covered welding electrodes.【英文标准名称】:StandardTestMethodsforPhotovoltaicModulesinCyclicTemperatureandHumidityEnvironments
【原文标准名称】:模拟温度和湿度的环境中光伏组件的的标准试验方法
【标准号】:ASTME1171-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E44.09
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dampheatexposure;environmentaltesting;humidity-freezecycling;modules;photovoltaics;solarenergy;thermalcycling;Electricalperformance--solardevices;Temperaturetests--solardevices/applications;Visualexamination--solardevices;Cycling;De
【摘要】:Theusefullifeofphotovoltaicmodulesmaydependontheirabilitytowithstandrepeatedtemperaturecyclingwithvaryingamountsofmoistureintheair.Thesetestmethodsprovideproceduresforsimulatingtheeffectsofcyclictemperatureandhumidityenvironments.Anextendeddurationdampheatprocedureisprovidedtosimulatetheeffectsoflongtermexposuretohighhumidity.Thedurationsoftheindividualenvironmentaltestsarespecifiedbyuseofthistestmethod;however,commonlyuseddurationsare50and200thermalcycles,10humidity-freezecycles,and1000hofdampheatexposure,asspecifiedbymodulequalificationstandardssuchasIEC61215andIEC61646.Longerdurationscanalsobespecifiedforextendeddurationmodulestresstesting.Mounting8212;Testmodulesaremountedsothattheyareelectricallyisolatedfromeachother,andinsuchamannertoallowfreeaircirculationaroundthefrontandbacksurfacesofthemodules.CurrentBiasing:Duringthethermalcyclingprocedure,testmodulesareoperatedwithoutilluminationandwithaforward-biascurrentequaltothemaximumpowerpointcurrentatstandardreportingconditions(SRC,seeTestMethodsE1036)flowingthroughthemodulecircuitry.Thecurrentbiasingisintendedtostressthemoduleinterconnectionsandsolderbondsinwayssimilartothosethatarebelievedtoberesponsibleforfill-factordegradationinfield-deployedmodules.EffectsofTestProcedures8212;Datageneratedusingthesetestmethodsmaybeusedtoevaluateandcomparetheeffectsofsimulatedenvironmentontestspecimens.Thesetestmethodsrequiredeterminationofbothvisibleeffectsandelectricalperformanceeffects.Effectsonmodulesmayvaryfromnonetosignificantchanges.Somephysicalchangesinthemodulemaybevisiblewhentherearenoapparentelectricalchangesinthemodule.Similarly,electricalchangesmayoccurwithnovisiblechangesinthemodule.Allconditionsofmeasurement,effectsofcycling,andanydeviationsfromthistestmethodmustbedescribedinthereportsothatanassessmentoftheirsignificancecanbemade.Sequencing8212;Ifthesetestmethodsareperformedaspartofacombinedsequencewithotherenvironmentalornon-environmentaltests,theresultsofthefinalelectricaltests(6.2)andvisualinspection(6.3)determinedattheendofonetestmaybeusedastheinitialelectricaltestsandvisualinspectionforthenexttest;duplicationofthesetestsisnotnecessaryunlesssospecified.1.1Thesetestmethodsprovideproceduresforstressingphotovoltaicmodulesinsimulatedtemperatureandhumidityenvironments.Environmentaltestingisusedtosimulateagingofmodulematerialsonanacceleratedbasis.1.2Threeindividualenvironmentaltestproceduresaredefinedbythesetestmethods:athermalcyclingprocedure,ahumidity-freezecyclingprocedure,andanextendeddurationdampheatprocedure.Electricalbiasingisutilizedduringthethermalcyclingproceduretosimulatestressesthatareknowntooccurinfield-deployedmodules.1.3Thesetestmethodsdefinemountingmethodsformodulesundergoingenvironmentaltesting,andspecifyparametersthatmustberecordedandreported.1.4Thesetestmethodsdonotestablishpassorfaillevels.Thedeterminationofacceptableorunacceptableresultsisbeyondthescopeofthesetestmethods.1.5Anyoftheindividualenvironmentaltestsmaybeperformedsingly,ormaybeco......
【中国标准分类号】:F12
【国际标准分类号】:27_160
【页数】:4P.;A4
【正文语种】:英语