【英文标准名称】:StandardTestMethodforHeatRelease,FlameSpread,SmokeObscuration,andMassLossTestingofInsulatingMaterialsContainedinElectricalorOpticalFiberCablesWhenBurninginaVerticalCableTrayConfiguration
【原文标准名称】:电缆或光缆的绝缘材料在立式电缆槽结构中燃烧时的热释放、展焰性、烟昏暗度和质量损失试验的标准试验方法
【标准号】:ASTMD5537-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D09.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cable;cabletray;calorimetry;carbondioxide;carbonmonoxide;char;electricalcable;electricalinsulation;fire;fire-testresponse;flame;heatrelease;heatreleaserate;ignition;opticaldensity;opticalfibercable;oxygenconsumptioncalorimetr
【摘要】:Thistestmethodprovidesameanstomeasureavarietyoffire-test-responsecharacteristicsassociatedwithheatandsmokereleaseandresultingfromburningthematerialsinsulatingelectricaloropticalfibercables,whenmadeintocablesandinstalledonaverticalcabletray.Thespecimensareallowedtoburnfreelyunderwellventilatedconditionsafterignitionbymeansofapropanegasburner.Therateofheatreleaseoftenservesasanindicationoftheintensityofthefiregenerated.GeneralconsiderationsoftheimportanceofheatreleaseratearediscussedinAppendixX1andconsiderationsforheatreleasecalculationsareinAppendixX2.Otherfire-test-responsecharacteristicsthataremeasurablebythistestmethodareusefultomakedecisionsonfiresafety.Thetestmethodisalsousedformeasuringsmokeobscuration.Theapparatusdescribedhereisalsousefultomeasuregaseouscomponentsofsmoke;themostimportantgaseouscomponentsofsmokearethecarbonoxides,presentinallfires.Thecarbonoxidesaremajorindicatorsofthecompletenessofcombustionandareoftenusedaspartoffirehazardassessmentcalculationsandtoimprovetheaccuracyofheatreleasemeasurements.TestLimitations:Thefire-test-responsecharacteristicsmeasuredinthistestarearepresentationofthemannerinwhichthespecimenstestedbehaveundercertainspecificconditions.Donotassumetheyarerepresentativeofagenericfireperformanceofthematerialstestedwhenmadeintocablesoftheconstructionunderconsideration.Inparticular,itisunlikelythatthistestisanadequaterepresentationofthefirebehaviorofcablesinconfinedspaces,withoutabundantcirculationofair.Thisisanintermediate-scaletest,andthepredictabilityofitsresultstolargescalefireshasnotbeendetermined.Someinformationexiststosuggestvalidationwithregardtosomelarge-scalescenarios.1.1Thisisafire-test-responsestandard.1.2Thistestmethodprovidesameanstomeasuretheheatreleasedandsmokeobscurationbyburningtheelectricalinsulatingmaterialscontainedinelectricaloropticalfibercableswhenthecablespecimens,excludingaccessories,aresubjectedtoaspecifiedflamingignitionsourceandburnfreelyunderwellventilatedconditions.Flamepropagationcabledamage,bycharlength,andmasslossarealsomeasured.1.3Thistestmethodprovidestwodifferentprotocolsforexposingthematerials,whenmadeintocablespecimens,toanignitionsource(approximately20kW),fora20mintestduration.Useittodeterminetheheatrelease,smokerelease,flamepropagationandmasslosscharacteristicsofthematerialscontainedinsingleandmulticonductorelectricaloropticalfibercables.1.4Thistestmethoddoesnotprovideinformationonthefireperformanceofmaterialsinsulatingelectricaloropticalfibercablesinfireconditionsotherthantheonesspecificallyusedinthistestmethodnordoesitmeasurethecontributionofthematerialsinthosecablestoadevelopingfirecondition.1.5Datadescribingtheburningbehaviorfromignitiontotheendofthetestareobtained.1.6Thistestequipmentissuitableformeasuringtheconcentrationsofcertaintoxicgasspeciesinthecombustiongases(seeAppendixX4).1.7ThevaluesstatedinSIunitsaretoberegardedasstandard(see).Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.8Thisstandardmeasuresanddescribestheresponseofmaterials,pr......
【中国标准分类号】:K15
【国际标准分类号】:
【页数】:21P.;A4
【正文语种】:英语