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1、UL94TestsforFlammabilityofPlasticMaterialsforPartsinDevicesandAppliancesJUNE4,2009−UL94tr1UnderwritersLaboratoriesInc.(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforTestsforFlammabilityofPlasticMaterialsforPartsinDevicesandAppliances,UL94FifthEdition,DatedOctober29,199
2、6Revisions:ThisStandardcontainsrevisionsthroughandincludingJune4,2009.SummaryofTopicsThefollowingchangesinrequirementsforANSI/UL94arebeingadopted:CorrectionfordefiningtheunitsofmeasuringtheafterflameandafterglowtimestothenearestsecondClarificationoftheVTMTestGasFlowRatesforTestFlamesEdito
3、rialdeletionof11.3.1.1ULStandardsforSafetyaredevelopedandmaintainedintheStandardGeneralizedMarkupLanguage(SGML).SGML--aninternationalstandard(ISO8879-1986)--isadescriptivemarkuplanguagethatdescribesadocument’sstructureandpurpose,ratherthanitsphysicalappearanceonapage.Duetoformattingdif
4、ferencesresultingfromtheuseofUL’snewelectronicpublishingsystem,pleasenotethatadditionalpages(onwhichnorequirementshavebeenchanged)maybeincludedinrevisionpagesduetorelocationofexistingtextandreformattingoftheStandard.Textthathasbeenchangedinanymannerismarkedwithaverticallineinthemargin.
5、Changesinrequirementsaremarkedwithaverticallineinthemarginandarefollowedbyaneffectivedatenoteindicatingthedateofpublicationorthedateonwhichthechangedrequirementbecomeseffective.Thefollowingtableliststhefutureeffectivedateswiththecorrespondingreference.tr2JUNE4,2009−UL94FutureEffectiveD
6、atesReferencesTheeffectivedatesofthesenew,revised,ordeletedParagraphs8.1.2,8.3.2,11.1.1,11.6.1,andTable11.1requirementsarebeingdetermined.Thenew,revised,anddeletedrequirementsaresubstantiallyinaccordancewithUL’sProposal(s)onthissubjectdatedMay2,2008(RecirculatedAugust8,2009),May30,2008
7、(RecirculatedFebruary27,2009),andDecember26,2009(RecirculatedFebruary20,2009).TherevisionsdatedJune4,2009includeareprintedtitlepage(page1)forthisStandard.Asindicatedonthetitlepage(page1),thisULStandardforSafetyisanAmericanNationalStandard.Attentionisdirectedtothenoteonthetitlepageoft