【英文标准名称】:StandardTestMethodforDeterminingtheProtectivePerformanceofanArcProtectiveBlanketforElectricArcHazards
【原文标准名称】:防止电弧危害的电弧保护毯防护性能确定的标准试验方法
【标准号】:ASTMF2676-2009
【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】:F18.65
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:arcblast;arcflash;arcflashprotection;arcprotectiveblankets;arcrating;blanket;breakopenthresholdperformance;electricalarcprotection
【摘要】:Thistestmethoddeterminestheeffectivenessofarcprotectiveblanketsinsuprressingthecombinedeffectsofanarcflashandarcblast.Thearcexposureenergyisproducedfromcontrolledphase-to-groundarcfault.Theresultingarcflashandblastenergyareintentionallydirectedontothetestspecimentosimulateworstcaseconditions.Testresultswilldescribethemaximumarccurrentandproductofarccurrentandcyclesatwhichtestspecimensblocktheenergywithoutbreakopen,abilitytoself-extinguishafterflaming,afterflametimeandthedetectionofmechanicalattachmentfailuresduringtesting.Mechanicalattachmentfailureandafterflametimeareobtainedfromvisualobservationsandvideorecordingaftereacharcexposure.Thistestmethodmaintainsthearcprotectiveblanketinaverticalpositionanddoesnotinvolvemovementexceptthatresultingfromthearcexposure.Inthistestmethod,testspecimensareexposedatthreearccurrentlevelstodeterminethetestspecimenx2019;sperformance.Note28212;Inexperimentaltesting,someblanketsincreaseinprotection(invalueofkA*cyclestocausebreakopen)asthearccurrentincreasesandsomedecreaseasshowninFig.1.Thistestmethodisdesignedtorecognizethisbehaviorandtospecifytestingovertherangeofarccurrentlevelsincludinglowerlevelsof5kAor10kA,orboth.Thistestmethodspecifiesastandardsetofexposureconditions.Differentexposureconditionsmayproducedifferentresults.Note38212;Inadditiontothestandardsetofexposureconditions,itispermittedtotestusingotherconditionsrepresentativeoftheexpectedhazard,reportedallnon-standardtestconditionsthatareused.FIG.1ExampleofPerformanceTrendforDifferentBlankets1.1Thistestmethodisusedtoevaluatetheabilityofthearcprotectiveblanketstowithstandtheeffectsofarcflashandarcblastinaconfigurationinwhichtheblanketishungoranchorednearenergizedequipment.Specifically,thistestmethodisusedtodeterminethearcprotectiveblanketx2019;s(1)resistancetobreakopen,(2)mechanicalstrength,and(3)abilitytoself-extinguishflamesfollowingacontrolledarcexposure.1.2Thismethodisusedtodeterminetheperformanceofarcprotectiveblanketsintermsof:maximumarccurrentlevelexpressedinkAandBTP(BTP)expressedastheproductofarccurrentinkAandarcdurationinnumberofcyclestocausebreakopen(kA*cycles).Cyclesareonthebasisof60Hz.1.3Blankettestspecimensusedinthistestmethodaretestsizeblanketsof152x00B1;5cm(60x00B1;2in.)by122x00B1;5cm(48x00B1;2in.).Thetestspecimensizeisfortestingpurposesonly.Commerciallyavailablearcprotectiveblanketseitherlargerorsmallerthanthetestspecimensizearecoveredbythisstandard.1.4Thearcprotectiveblanketsdescribedinthistestmethodaremadeofflame-resistantmaterialsandareavailableinvaryingsizesandconfigurationsbasedontheapplication.1.5Thistestmethodshallbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoincidentthermal(convectiveandradiant)andpressureenergiesgeneratedbyanelectricarcundercontrolledlaboratoryconditions.1......
【中国标准分类号】:C73
【国际标准分类号】:13_340_99
【页数】:7P.;A4
【正文语种】:英语


【英文标准名称】:Ambientairquality-StandardmethodforthemeasurementofPb,Cd,AsandNiinthePM10fractionofsuspendedparticulatematter.
【原文标准名称】:环境空气质量.悬浮颗粒物质的PM10成分中Pb、Cd、As和Ni测量的标准方法
【标准号】:NFX43-026-2005
【标准状态】:现行
【国别】:法国
【发布日期】:2005-12-01
【实施或试行日期】:2005-12-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:气溶胶;空气净化;空气质量;环境空气;砷;原子吸收光谱测定法;原子吸收分光光度测定法;镉;定义;测定;碳炉原子吸收光谱测定法;感应耦合等离子体;铅;质谱学;镍;标准参考测量方法;基准方法;抽样方法;悬浮尘埃;试验设备
【英文主题词】:
【摘要】:
【中国标准分类号】:Z50
【国际标准分类号】:13_040_20
【页数】:48P;A4
【正文语种】:其他