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首页 UL508A控制板

UL508A控制板.pdf

UL508A控制板

地核来客
2010-11-09 0人阅读 举报 0 0 暂无简介

简介:本文档为《UL508A控制板pdf》,可适用于人文社科领域

ULAISBNIndustrialControlPanelsUnderwritersLaboratoriesInc(UL)PfingstenRoadNorthbrook,ILULStandardforSafetyforIndustrialControlPanels,ULAFirstEdition,DatedApril,ThefollowingtableliststhefutureeffectivedateswiththecorrespondingreferenceFutureEffectiveDatesReferencesApril,Sections–,Paragraphs–,Sections–,Paragraphs,,Sections–,SupplementSA,andAppendixBApril,Paragraphs,,andSupplementSBThenewrequirementsaresubstantiallyinaccordancewithUL’sBulletin(s)onthissubjectdatedNovember,Thebulletin(s)isnowobsoleteandmaybediscardedThemasterforthisStandardatUL’sNorthbrookOfficeistheofficialdocumentinsofarasitrelatestoaULserviceandthecomplianceofaproductwithrespecttotherequirementsforthatproductandservice,oriftherearequestionsregardingtheaccuracyofthisStandardUL’sStandardsforSafetyarecopyrightedbyULNeitheraprintedcopyofaStandard,northedistributiondisketteforaStandardonDisketteandthefilefortheStandardonthedistributiondisketteshouldbealteredinanywayAllofUL’sStandardsandallcopyrights,ownerships,andrightsregardingthoseStandardsshallremainthesoleandexclusivepropertyofULAllrightsreservedNopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformbyanymeans,electronic,mechanicalphotocopying,recording,orotherwisewithoutpriorpermissionofULRevisionsofULStandardsforSafetyareissuedfromtimetotimeAULStandardforSafetyiscurrentonlyifitincorporatesthemostrecentlyadoptedrevisionsULprovidesthisStandard″asis″withoutwarrantyofanykind,eitherexpressedorimplied,includingbutnotlimitedto,theimpliedwarrantiesofmerchantabilityorfitnessforanypurposeInnoeventwillULbeliableforanyspecial,incidental,consequential,indirectorsimilardamages,includinglossofprofits,lostsavings,lossofdata,oranyotherdamagesarisingoutoftheuseofortheinabilitytousethisStandard,evenifULoranauthorizedULrepresentativehasbeenadvisedofthepossibilityofsuchdamageInnoeventshallUL’sliabilityforanydamageeverexceedthepricepaidforthisStandard,regardlessoftheformoftheclaimULwillattempttoanswersupportrequestsconcerningelectronicversionsofitsStandardsHowever,thissupportserviceisofferedonareasonableeffortsbasisonly,andULmaynotbeabletoresolveeverysupportrequestULsupportstheelectronicversionsofitsStandardsonlyiftheyareusedundertheconditionsandoperatingsystemsforwhichitisintendedUL’ssupportpoliciesmaychangefromtimetotimewithoutnotificationULreservestherighttochangetheformat,presentation,filetypesandformats,deliverymethodsandformats,andthelikeofbothitsprintedandelectronicStandardswithoutpriornoticeAPRIL,−ULAtrPurchasersoftheelectronicversionsofUL’sStandardsforSafetyagreetodefend,indemnify,andholdULharmlessfromandagainstanyloss,expense,liability,damage,claim,orjudgement(includingreasonableattorney’sfees)resultingfromanyerrorordeviationintroducedwhilepurchaserisstoringanelectronicStandardonthepurchaser’scomputersystemIfasingleuserversionelectronicStandardwaspurchased,onecopyofthisStandardmaybestoredontheharddiskofasinglepersonalcomputer,oronasingleLANfileserverorthepermanentstoragedeviceofamultipleusercomputerinsuchamannerthatthisStandardmayonlybeaccessedbyoneuseratatimeandforwhichthereisnopossibilityofmultipleconcurrentaccessIfamultipleuserversionelectronicStandardwaspurchased,onecopyoftheStandardmaybestoredonasingleLANfileserver,oronthepermanentstoragedeviceofamultipleusercomputer,oronanIntranetserverThenumberofconcurrentusersshallnotexceedthenumberofusersauthorizedElectronicStandardsareintendedforonlineuse,suchasforviewingtherequirementsofaStandard,conductingawordsearch,andthelikeOnlyonecopyoftheStandardmaybeprintedfromeachsingleuserversionofanelectronicStandardOnlyonecopyoftheStandardmaybeprintedforeachauthorizeduserofamultipleuserversionofanelectronicStandardBecauseofdifferencesinthecomputersoftwareprintersetupusedbyULandthoseofelectronicStandardspurchasers,theprintedcopyobtainedbyapurchasermaynotlookexactlyliketheonlinescreenviewortheprintedStandardAnemployeeofanorganizationpurchasingaULStandardcanmakeacopyofthepageorpagesbeingviewedfortheirownfairandorpracticalinternaluseTherequirementsinthisStandardarenowineffect,exceptforthoseparagraphs,sections,tables,figures,andorotherelementsoftheStandardhavingfutureeffectivedatesasindicatedinthenotefollowingtheaffecteditemThepriortextforrequirementsthathavebeenrevisedandthathaveafutureeffectivedatearelocatedaftertheStandard,andareprecededbya″SUPERSEDEDREQUIREMENTS″noticeNewproductsubmittalsmadepriortoaspecifiedfutureeffectivedatewillbejudgedunderalloftherequirementsinthisStandardincludingthoserequirementswithaspecifiedfutureeffectivedate,unlesstheapplicantspecificallyrequeststhattheproductbejudgedunderthecurrentrequirementsHowever,iftheapplicantelectsthisoption,itshouldbenotedthatcompliancewithalltherequirementsinthisStandardwillberequiredasaconditionofcontinuedListingandFollowUpServicesaftertheeffectivedate,andunderstandingofthisshouldbesignifiedinwritingCopyright©UnderwritersLaboratoriesIncThisStandardconsistsofpagesdatedasshowninthefollowingchecklist:PageDateApril,SASAApril,SBSBApril,AAApril,BBApril,APRIL,−ULAtrAPRIL,ULAStandardforIndustrialControlPanelsFirstEditionApril,AneffectivedateincludedasanoteimmediatelyfollowingcertainrequirementsisoneestablishedbyUnderwritersLaboratoriesIncRevisionsofthisStandardwillbemadebyissuingrevisedoradditionalpagesbearingtheirdateofissueAULStandardiscurrentonlyifitincorporatesthemostrecentlyadoptedrevisions,allofwhichareitemizedonthetransmittalnoticethataccompaniesthelatestsetofrevisedrequirementsISBNCOPYRIGHT©UNDERWRITERSLABORATORIESINCAPRIL,INDUSTRIALCONTROLPANELSULANoTextonThisPageCONTENTSFOREWORDPART–GENERALUSEINDUSTRIALCONTROLPANELSINTRODUCTIONScopeGlossaryUndatedReferencesComponentsUnitsofMeasurementTerminologyCONSTRUCTIONALLPANELSGeneralProtectionAgainstCorrosionSupportandSecurementofLivePartsSpacingsConduitBushingsInsulatingBarriersInsulatingMaterialsGrounding–GeneralGrounding–SizeofTerminalorBondingConductorTransformerSecondaryGroundingIdentificationofGroundingandGroundedCircuitConductorsandTerminalsENCLOSEDPANELSEnclosuresEnclosureOpeningsAccessibilityofLivePartsVentilationOpeningsGeneralLocationofventilationopeningConstructionBarriersUsedwithVentilationOpeningsObservationWindowsBondingWireBendingSpaceEnclosureEnvironmentalControlDevicesGeneralEnclosurefansEnclosureairconditionerEnclosureheaterAirfiltersEnclosurethermalinsulationAPRIL,INDUSTRIALCONTROLPANELSULAEnclosureMaintenanceLightingGeneralComponentrequirementsCircuitrequirementsPOWERCIRCUITSFieldWiringGeneralComponentrequirementsSizingSeparationofcircuitsCordconnectedequipmentReceptaclesInternalWiringGeneralConductorrequirementsWiringmethodsRoutingofinternalwiringSeparationofcircuitsSizingDisconnectSwitchesComponentrequirementsSizingLocationMechanicaloperatingmechanismBranchCircuitProtectionComponentrequirementsLocationSizingofbranchcircuitprotectionforsinglemotorcircuitSizingofbranchcircuitprotectionformotorgroupsReceptaclesSizingofbranchcircuitprotectionforheaterloadsSizingofbranchcircuitprotectionforapplianceloadsSizingofbranchcircuitprotectionforlightingloadsOvercurrentProtectionofFeederComponentrequirementsLocationSizingofovercurrentprotectionLoadControllersComponentrequirementsSizingratingofloadcontrollersLocationReversingmotorcontrollersWyedeltamotorcontrollersOverloadProtectionofMotorLoadsComponentrequirementsSizingofoverloadrelayLocationPowerTransformers

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