IEC 60664-1 2020 AMD1 2025.docx

1、IECIEC60664-1IEdition3.02025-05INTERNATIONALSTANDARDNORMEINTERNATIONALEBASICSAFETYPUBLICATIONPUBLICATIONFONDAMENTALEDESECURITEHORIZONTALPUBLICATIONPUBLICATIONHORIZONTALEAmendement1amendement1Insulationcoordinationforequipmentwithinlow-voltagesupplysystems-Part1:Principles,requirementsandtestsCoordin

2、ationdeisolementdesmaterielsdansIesreseauxdenergieelectriqueabassetension-Partie1:Principes,exigencesetessaisICS29.080.30ISBN978-2-8327-0344-1THISPUBLICATIONISCOPYRIGHTPROTECTEDCopyright2025IEC,Geneva3SwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutili

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16、erquevousavezobtenucettepublicationviaundistributeuragree.INTERNATIONALELECTROTECHNICALCOMMISSIONINSULATIONCOORDINATIONFOREQUIPMENTWITHINLOW-VOLTAGESUPPLYSYSTEMS-Part1:Principles,requirementsandtestsAMENDMENT1FOREWORD1) TheInternationalElectrotechnicalCommission(IEC)isaworldwideorganizationforstanda

17、rdizationcomprisingallnationalelectrotechnicalcommittees(IECNationalCommittees).TheobjectofIECistopromoteinternationalco-operationonallquestionsconcerningstandardizationintheelectricalandelectronicfields.Tothisendandinadditiontootheractivities,IECpublishesInternationalStandards,TechnicalSpecificatio

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19、nsliaisingwiththeIECalsoparticipateinthispreparation.IECcollaboratescloselywiththeInternationalOrganizationforStandardization(ISO)inaccordancewithconditionsdeterminedbyagreementbetweenthetwoorganizations.2) TheformaldecisionsoragreementsofIEContechnicalmattersexpress,asnearlyaspossible,aninternation

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24、pertydamageorotherdamageofanynaturewhatsoever,whetherdirectorindirect,orforcosts(includinglegalfees)andexpensesarisingoutofthepublication,useof,orrelianceupon,thisIECPublicationoranyotherIECPublications.8) AttentionisdrawntotheNormativereferencescitedinthispublication.Useofthereferencedpublicationsi

25、sindispensableforthecorrectapplicationofthispublication.9) IECdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).IECtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument

26、IEChadnotreceivednoticeof（八）patent(三)jwhichmayberequiredtoimplementthisdocument.However,implementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableathttps:/patents.iec.chand/orwww.iso.org/patents.IECshallnotbeheldresponsibleforidentifyinganyo

27、rallsuchpatentrights.Amendment1toIEC60664:2020hasbeenpreparedbyIECtechnicalcommittee109:Insulationco-ordinationforlow-voltageequipment.ThetextofthisAmendmentisbasedonthefollowingdocuments:DraftReportonvoting109/235/FDIS109/240/RVDFullinformationonthevotingforitsapprovalcanbefoundinthereportonvotingi

28、ndicatedintheabovetable.ThelanguageusedforthedevelopmentofthisAmendmentisEnglish.ThisdocumentwasdraftedinaccordancewithISO/IECDirectives,Part2,anddevelopedinaccordancewithISO/IECDirectives,Part1andISO/IECDirectives,IECSupplement,availableatwww.iec.ch/members_experts/refdocs.Themaindocumenttypesdevel

29、opedbyIECaredescribedingreaterdetailatwww.iec.ch/publications/.ThecommitteehasdecidedthatthecontentsofthisdocumentwillremainunchangeduntilthestabilitydateindicatedontheIECwebsiteunderwebstore.iec.chinthedatarelatedtothespecificdocument.Atthisdate,thedocumentwillbe reconfirmed, withdrawn,or revised.T

30、hroughoutthedocument(exceptintheBibliography),delete:IEC60364-4-44:2007andreplacewith:IEC60364-4-44:2024.1ScopeReplacethefirstparagraphwiththefollowing:ThispartofIEC60664dealswithinsulationcoordinationforelectricalequipmenthavingaratedvoltageuptoAC1000VorDC1500Vconnectedtolow-voltagesupplysystems.NO

31、TE1Throughoutthisdocument,thetermequipmentisusedwiththemeaningofelectricalequipment.RenumberNOTE1andNOTE2respectivelyasNOTE2andNOTE3.Add,attheendoftheexistinglastparagraph,thefollowingNOTE:NOTE4FurtherexplanationsandexampleswithregardtotheuseofthisdocumentareprovidedinIECTR60664-2-1.3.1 Termsanddefi

32、nitionsAddthefollowingnewterms:3.1.48electricpowernetworkparticularinstallations,substations,linesorcablesforthetransmissionanddistributionofelectricityNote1toentry:Theboundariesofthedifferentpartsofthisnetworkaredefinedbyappropriatecriteria,suchasgeographicalsituation,ownership,voltage,etc.SOURCE:I

33、EC60050-601:1985,601-01-023.1.49electricalinstallationassemblyofelectricalequipmentwhichisusedforthegeneration,transmission,conversion,distributionand/oruseofelectricenergyNote1toentry:Theelectricalinstallationincludesenergysourcese.g.localpowersuppliessuchasbatteries,capacitorsandallothersourcesofs

34、toredelectricenergy.SOURCE:IEC60050-651:2014,651-26-01,modified-e.g.localpowersupplieshasbeenaddedtotheNotetoentry.3.1.50electricalequipmentitemusedforgeneration,conversion,transmission,distributionorutilizationofelectricenergyNote1toentry:Examplesofsuchitemsareelectricmachines,transformers,switchge

35、arandcontrolgear,measuringinstruments,protectivedevices,wiringsystems,andcurrent-usingequipment.SOURCE:IEC60050-826:2022,826-16-013.1.51electrochemicalmigrationtransportofionsinanelectrolyteduetoanelectricfieldSOURCE:IEC60050-114:2014,114-04-061.1.1 .5AttenuationoftransientovervoltagelevelsAdd,after

36、thirdparagraph,thefollowing:Technicalcommitteesshallconsidertheendoflifeofthemeanstolimittransientovervoltages.1.1.2 EquipmentenergizeddirectlyfromthemainssupplyReplacetheexistingtextof4.3.2withthefollowing:Equipmentisconsideredtobeenergizeddirectlyfromthemainssupplywhentheequipmentisgalvanicallycon

37、nectedtoanelectricpowernetwork(eitherpublicorprivate).Whendefiningtheratedimpulsewithstandvoltageofequipment,technicalcommitteesshalltakeintoaccountthefollowingovervoltagecategories:- OvervoltagecategoryIVappliesat,orintheproximityof,thepointwhereanelectricalinstallationisconnectedtoanelectricpowern

38、etwork.NOTE1EquipmentofovervoltagecategoryIVhasaveryhighimpulsewithstandcapabilityprovidingtherequiredhighdegreeofreliabilityattheselocations,forexampleupstreamofthemaindistributionboard.- OvervoltagecategoryIIIappliesinanelectricalinstallationdownstreamofandincludingthemaindistributionboard.NOTE2Ex

39、amplesofsuchequipmentincludedistributionboards,localgeneration,circuit-breakers,wiringsystems(seeIEC60050-826:2022,826-15-01),includingcables,busbars,junctionboxes,switches,socket-outlets)andequipmentforindustrialuseandsomeotherequipment,e.g.stationarymotors.- OvervoltagecategoryIlappliesforequipmen

40、tconnectedtoanelectricalinstallation.NOTE3Examplesofsuchequipmentareappliances,portabletoolsandsimilarloadswithpluggableorpermanentconnectiontotheelectricalinstallation.- OvervoltagecategoryIappliestoequipmentthatmayonlybeconnectedtoanelectricalinstallationwhenspecificmeasuresareprovided.NOTE4Suchsp

41、ecificmeasuresarerelatedtotransientovervoltagesaswellastotemporaryovervoltagesandareaddressedin4.3.4.Whereahigherdegreeofreliabilityandavailabilityisnecessary,equipmenthavinghigherratedimpulsewithstandvoltageshouldbeconsidered(see5.2.2.2).Addthefollowingnewsubclause:4.3.4Equipmentrequiringspecificme

42、asuresWhenequipmentisdesignedforovervoltagecategoryIandisintendedtobeconnectedtoanelectricalinstallation,allthefollowingmeasuresandverificationsshallbeconsideredbytechnicalcommittees:- themainssupplytowhichtheequipmentisintendedtobeconnected,excludesbydesigntheoccurrenceoftemporaryovervoltageswithpe

43、akvaluesabovetheratedimpulsewithstandvoltageoftheequipment;NOTE1InTN-systemjforexample,therearenosignificanttemporaryovervoltagesexceedingtheratedimpulsewithstandvoltageofequipmentdesignedforovervoltagecategoryI.- transientovervoltagesarelimitedtonotexceedtheratedimpulsewithstandvoltageoftheequipmen

44、tbyappropriatemeans,e.g.SPDs.NOTE2SPDsareprimarilydesignedtolimittransientovervoltages.Howevertheyarealsotestedwithcertaintemporaryovervoltages;formoreexplanationsseetheIEC61643series.- therequiredimpulsewithstandvoltageattherelevantlocationistestedandconfirmedfortheequipmentinconjunctionwiththeinte

45、ndedprotectionmeans,toensurenotonlythewithstandvoltage,butalsothenecessarycoordinationandwithstandasrelatedtoimpulseenergy.NOTE3MoreinformationaboutsystemlevelimmunityisgiveninIECTR61643-03.5.2.5Dimensioningofclearancesofbasicinsulation,supplementaryinsulationandreinforcedinsulationReplacetheexistin

46、gsecondparagraphwiththefollowing:Withrespecttoimpulsewithstandvoltages,clearancesofreinforcedinsulationshallbedimensionedasspecifiedinTableF.2correspondingtotheratedimpulsewithstandvoltagebutonestephigherinthepreferredseriesofvaluesin4.2.2.1thanthatspecifiedforbasicinsulation.Iftheimpulsewithstandvo

47、ltagerequiredforbasicinsulationis:-otherthanavaluetakenfromthepreferredseries,or-12kV(highestvalueofthepreferredseries),reinforcedinsulationshallbedimensionedtowithstand160%oftheimpulsewithstandvoltagerequiredforbasicinsulation.Inthosecases,linearinterpolationofTableF.2isallowed.Add,attheendofthethi

48、rdparagraph(excludingthenote),thefollowing:LinearinterpolationofTableF.8isallowed.5.3.2.1 GeneralAdd,attheendoftheexistingparagraph,thefollowing:SeealsotheinformativeAnnexIforadditionalconsiderationsofelectrochemicalmigrationphenomenonofcreepagedistancesforDCapplications.5.3.2.2 TemporarywithstandovervoltagesReplacethesentencefollowingthelistinthefirstparagraphwiththefollowing:whereUoisthenominallie-to-eutralvoltageofsupplysystems,except:- inITsystemwithoutaneutralconductor,whereUOisthelie-to-linevolta