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StandardnameStandardNumberAbstractLow-Voltageelectricalinstallations–Part5-53:Se-lectionanderectionofelectricalequipment–Devicesforprotectionforsafety,isolation,switching,controlandmonitoringIEC60364-5-53Insulationcoordinationforequipmentwithinlow-voltagesupplysystems–Part1:Principles,requirementsandtestsIEC60364-5-53Dealswithgeneralrequirementsforisolation,switchingandcontrolandwiththerequirementsforselectionanderectionofthedevicesprovidedtofullsuchfunctions.Thisfourtheditioncancelsandreplacesthethirdeditionpublishedin2001,Amendment1:2002andAmendment2:2015.Thiseditionconstitutesatechnicalrevision.Thiseditionincludesthefollowingsignicanttechnicalchangeswithrespecttothepreviousedition:a)revisionofallclausesexcept531and534;b)introductionofanewClause537Monitoring;c)Clause530containsallnormativereferencesandalltermsanddenitions.Thisconsolidatedversionconsistsofthefourthedition(2019)anditsamendment1(2020).Therefore,noneedtoorderamendmentinadditiontothispublication.IEC60664-1dealswithinsulationcoordinationforequipmenthavingaratedvoltageuptoAC1000VorDC1500Vconnectedtolow-voltagesupplysystems.Thisdocumentappliestofrequenciesupto30kHz.Itappliestoequipmentforuseupto2000mabovesealevelandprovidesguidanceforuseathigheraltitudes.Itprovidesrequirementsfortechnicalcommitteestodetermineclearances,creepagedistancesandcriteriaforsolidinsulation.Itincludesmethodsofelectricaltestingwithrespecttoinsulationcoordination.Theminimumclearancesspeciedinthisdocumentdonotapplywhereionizedgasesarepresent.Specialrequirementsforsuchsituationscanbespeciedatthediscretionoftherelevanttechnicalcommittee.Thisdocumentdoesnotdealwithdistances:IEC60664-1---throughliquidinsulation;throughgasesotherthanair;throughcompressedair.Thiseditionincludesthefollowingsignicanttechnicalchangeswithrespecttothepreviousedition:updateoftheScope,Clauses2and3,additionof1500VDCintotables,newstructureforClauses4and5,additionofAnnexGwithaflowchartforclearances,additionofAnnexHwithaflowchartforcreepagedistances,updateofdistancesaltitudecorrectioninanewTableF.10.IthasthestatusofabasicsafetypublicationinaccordancewithIECGuide104.ThecontentsofthecorrigendumofOctober2020havebeenincludedinthiscopy.113
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