UL497A2001SecondaryProtectorsforCommunicationsCirc

UL497AISBN0-7629-0626-XSecondaryProtectorsforCommunicationsCircuits(UL)333PfingstenRoadNorthbrook,IL60062-2096ULStandardforSafetyforSecondaryProtectorsforCommunicationsCircuits,UL497AThirdEdition,DatedMarch20,2001ULisintheprocessofconvertingitsStandardsforSafetytotheStandardGeneralizedMarkupLanguage(SGML),andimplementinganSGMLcompliantdocumentmanagementandpublishingsystem.SGML-aninternationalstandard(ISO8879-1986)-isadescriptivemarkuplanguagethatdescribesadocument’sstructureandpurpose,ratherthanitsphysicalappearanceonapage.SignificantbenefitsthatwillresultfromUL’suseofSGMLandthesenewsystemsincludeincreasedproductivity,reducedturnaroundtimes,anddataandinformationconsistency,reusability,shareability,andportability.However,thefonts,pagination,andgeneralformattingofUL’snewelectronicpublishingsystemdifferfromthatofUL’spreviouspublishingsystem.Consequently,whenrevisionpagesareissuedforaStandardwiththenewpublishingsystem,thesedifferencesmayresultintheprintingofpagesonwhichnorequirementshavebeenchanged-theseadditionalpagesresultfromrelocationoftextduetorepaginationandreformattingoftheStandardwiththenewpublishingsystem.ThemasterforthisStandardatUL’sNorthbrookOfficeistheofficialdocumentinsofarasitrelatestoaULserviceandthecomplianceofaproductwithrespecttotherequirementsforthatproductandservice,oriftherearequestionsregardingtheaccuracyofthisStandard.UL’sStandardsforSafetyarecopyrightedbyUL.NeitheraprintedcopyofaStandard,northedistributiondisketteforaStandard-on-DisketteandthefilefortheStandardonthedistributiondisketteshouldbealteredinanyway.AllofUL’sStandardsandallcopyrights,ownerships,andrightsregardingthoseStandardsshallremainthesoleandexclusivepropertyofUL.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformbyanymeans,electronic,mechanicalphotocopying,recording,orotherwisewithoutpriorpermissionofUL.RevisionsofULStandardsforSafetyareissuedfromtimetotime.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.MARCH20,2001−UL497Atr1’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.Becauseofdifferencesinthecomputer/software/printersetupusedbyULandthoseofelectronicStandardspurchasers,theprintedcopyobtainedbyapurchasermaynotlookexactlyliketheon-linescreenviewortheprintedStandard.AnemployeeofanorganizationpurchasingaULStandardcanmakeacopyofthepageorpagesbeingviewedfortheirownfairand/orpracticalinternaluse.TherequirementsinthisStandardarenowineffect,exceptforthoseparagraphs,sections,tables,figures,and/orotherelementsoftheStandardhavingfutureeffectivedatesasindicatedinthenotefollowingtheaffecteditem.ThepriortextforrequirementsthathavebeenrevisedandthathaveafutureeffectivedatearelocatedaftertheStandard,andare