UL507电线电缆安规(1)

UL507ISBN0-7629-0488-7ElectricFansUnderwritersLaboratoriesInc.(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforElectricFans,UL507NinthEdition,DatedDecember13,1999Revisions:ThisStandardcontainsrevisionsthroughandincludingSeptember24,2001.ULStandardsforSafetyaredevelopedandmaintainedintheStandardGeneralizedMarkupLanguage(SGML).SGML--aninternationalstandard(ISO8879-1986)--isadescriptivemarkuplanguagethatdescribesadocument’sstructureandpurpose,ratherthanitsphysicalappearanceonapage.DuetoformattingdifferencesresultingfromtheuseofUL’snewelectronicpublishingsystem,pleasenotethatadditionalpages(onwhichnorequirementshavebeenchanged)maybeincludedinrevisionpagesduetorelocationofexistingtextandreformattingoftheStandard.Textthathasbeenchangedinanymannerismarkedwithaverticallineinthemargin.Changesinrequirementsaremarkedwithaverticallineinthemarginandarefollowedbyaneffectivedatenoteindicatingthedateofpublicationorthedateonwhichthechangedrequirementbecomeseffective.Thefollowingtableliststhefutureeffectivedateswiththecorrespondingreference.FutureEffectiveDatesReferencesSeptember24,2003Paragraphs7.2,16.19,22.11,28.1.10–28.1.12,42.1.1,62.1.11,66.3,93.6,93A.5,andTable42.1December13,2001Paragraphs13.1.2and28.3.3ThenewandrevisedrequirementsaresubstantiallyinaccordancewithUL’sBulletin(s)onthissubjectdatedFebruary11,2000andApril14,2000.Thebulletin(s)isnowobsoleteandmaybediscarded.TherevisionsdatedSeptember24,2001includeareprintedtitlepage(page1)forthisStandard.Asindicatedonthetitlepage(page1),thisULStandardforSafetyhasbeenadoptedbytheDepartmentofDefense.Asindicatedonthetitlepage(page1),thisULStandardforSafetyisanAmericanNationalStandard.AttentionisdirectedtothenoteonthetitlepageofthisStandardoutliningtheprocedurestobefollowedtoretaintheapprovedtextofthisANSI/ULStandard.ThemasterforthisStandardatUL’sNorthbrookOfficeistheofficialdocumentinsofarasitrelatestoaULserviceandthecomplianceofaproductwithrespecttotherequirementsforthatproductandservice,oriftherearequestionsregardingtheaccuracyofthisStandard.UL’sStandardsforSafetyarecopyrightedbyUL.NeitheraprintedcopyofaStandard,northedistributiondisketteforaStandard-on-DisketteandthefilefortheStandardonthedistributiondisketteshouldbealteredinanyway.AllofUL’sStandardsandallcopyrights,ownerships,andrightsregardingthoseStandardsshallremainthesoleandexclusivepropertyofUL.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformbyanymeans,electronic,mechanicalphotocopying,recording,orotherwisewithoutpriorpermissionofUL.SEPTEMBER24,2001−UL507tr1RevisionsofULStandardsforSafetyareissuedfromtimetotime.AULStandardforSafetyiscurrentonlyifitincorporatesthemostrecentlyadoptedrevisions.ULprovidesthisStandard″asis″withoutwarrantyofanykind,eitherexpressedorimplied,includingbutnotlimitedto,theimpliedwarrantiesofmerchantabilityorfitnessforanypurpose.InnoeventwillULbeliableforanyspecial,incidental,consequential,indirectorsimilardamages,includinglossofprofits,lostsavings,lossofdata,oranyotherdamagesarisingoutoftheuseofortheinabilitytousethisStandard,evenifULoranauthorizedULrepresentativehasbeenadvisedofthepossibilityofsuchdamage.InnoeventshallUL’sliabilityforanydamageeverexceedthepricepaidforthisStandard,regardlessoftheformoftheclaim.ULwillattempttoanswersupportrequestsconcerningelectronicversionsofitsStandards.However,thissupportserviceisofferedonareasonableeffortsbasisonly,andULmaynotbeabletoresolveeverysupportrequest.ULsupportstheelectronicversionsofitsStandardsonlyiftheyareusedundertheconditionsandoperatingsystemsforwhichitisintended.UL’ssupportpoliciesmaychangefromtime-to-timewithoutnotification.ULreservestherighttochangetheformat,presentation,filetypesandformats,deliverymethodsandformats,andthelikeofbothitsprintedandelectronicStandardswithoutpriornotice.PurchasersoftheelectronicversionsofUL’sStandardsforSafetyagreetodefend,indemnify,andholdULharmlessfromandagainstanyloss,expense,liability,damage,claim,orjudgement(includingreasonableattorney’sfees)resultingfromanyerrorordeviationintroducedwhilepurchaserisstoringanelectronicStandardonthepurchaser’scomputersystem.Ifasingle-userversionelectronicStandardwaspurchased,onecopyofthisStandardmaybestoredontheharddiskofasinglepersonalcomputer,oronasingleLANfile-serverorthepermanentstoragedeviceofamultiple-usercomputerinsuchamannerthatthisStandardmayonlybeaccessedbyoneuseratatimeandforwhichthereisnopossibilityofmultipleconcurrentaccess.Ifamultiple-userversionelectronicStandardwaspurchased,onecopyoftheStandardmaybestoredonasingleLANfile-server,oronthepermanentstoragedeviceofamultiple-usercomputer,oronanIntranetserver.Thenumberofconcurrentusersshallnotexceedthenumberofusersauthorized.ElectronicStandardsareintendedforon-lineuse,suchasforviewingtherequirementsofaStandard,conductingawordsearch,andthelike.OnlyonecopyoftheStandardmaybeprintedfromeachsingle-userversionofanelectronicStandard.OnlyonecopyoftheStandardmaybeprintedforeachauthorizeduserofamultiple-userversionofanelectronicStandard.Becauseofdifferencesinthecompu