UL 94-2009 Flammability of Plastic Materials .pdf

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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