IEC 60076-1-2011.pdf

IEC 60076-1-2011.pdf

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INTERNATIONALSTANDARDNORMEINTERNATIONALEPowertransformers-Part1:

GeneralTransformateursdepuissance-Partie1:

GeneralitesCopyrightInternationalElectrotechnicalCommissionProvidedbyIHSunderlicensewithIECc:

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03MDTEdition3.02011-04THISPUBLICATIONISCOPYRIGHTPROTECTEDLUCopyright2011IEC,Geneva,SwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherIECorIECsmemberNationalCommitteeinthecountryoftherequester.IfyouhaveanyquestionsaboutIECcopyrightorhaveanenquiryaboutobtainingadditionalrightstothispublication,pleasecontacttheaddressbeloworyourlocalIECmemberNationalCommitteeforfurtherinformation.Droitsdereproductionreserves.Saufindicationcontraire,aucunepartiedecettepublicationnepeutetrereproduiteniutiliseesousquelqueformequecesoiletparaucunprocede,electroniqueoumecanique,ycomprislaphotocopieetlesmicrofilms,sanslaccordecritdelaCEIouduComitenationaldelaCEIdupaysdudemandeur.SivousavezdesquestionssurlecopyrightdelaCEIousivousdesirezobtenirdesdroitssupplementairessurcettepublication,utilisezlescoordonneesci-apresoucontactezleComitenationaldelaCEIdevotrepaysderesidence.IECCentralOffice3,ruedeVarembeCH-1211Geneva20SwitzerlandEmail:

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03MDTlll._1E_C_60_0_1_6-_1INTERNATIONALSTANDARDNORMEINTERNATIONALEPowertransformers-Part1:

GeneralTransformateursdepuissance-Partie1:

GeneralitesINTERNATIONALELECTROTECHNICALCOMMISSIONCOMMISSIONELECTROTECHNIQUEINTERNATIONALEICS29.180RegisteredtrademarkoftheInternationalElectrotechnicalCommissionCopyrightInternationalElectrotechnicalComf!

lissiondelaCommissionElectrotechniqueInternationaleProvidedbyIHSunderlicensewithIECNoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=NanyangTechnologicalUniv/5926867100NotforResale,07/01/201303:

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03MDTEdition3.02011-04PRICECODECODEPRIXXBISBN978-2-88912-438-1-2-60076-1IEC:

2011CONTENTSFOREWORD.51Scope.72Normativereferences.83Termsanddefinitions.83.1General.83.2Terminalsandneutralpoint.93.3Windings.103.4Rating.113.5Tappings.133.6Lossesandno-loadcurrent.153.7Short-circuitimpedanceandvoltagedrop.163.8Temperaturerise.173.9Insulation.173.10Connections.173.11Testclassification.183.12Meteorologicaldatawithrespecttocooling.193.13Otherdefinitions.194Serviceconditions.204.1General.204.2Normalserviceconditions.205Ratingandgeneralrequirements.225.1Ratedpower.225.1.1General.225.1.2Preferredvaluesofratedpower.225.1.3Minimumpowerunderalternativecoolingmodes.225.1.4Loadingbeyondratedpower.235.2Coolingmode.235.3Loadrejectionontransformersdirectlyconnectedtoagenerator.235.4Ratedvoltageandratedfrequency.235.4.1Ratedvoltage.235.4.2Ratedfrequency.235.4.3Operationathigherthanratedvoltageand/oratotherthanratedfrequency.245.5Provisionforunusualserviceconditions.245.6HighestvoltageforequipmentUmanddielectrictestslevels.255.7Additionalinformationrequiredforenquiry.255.7.1Transformerclassification.255.7.2Windingconnectionandnumberofphases.255.7.3Soundlevel.265.7.4Transport.265.8Componentsandmaterials.266Requirementsfortransformershavingatappedwinding.276.1General-Notationoftappingrange.276.2Tappingvoltage-tappingcurrent.Standardcategoriesoftappingvoltagevariation.Maximumvoltagetapping.276.3Tappingpower.Full-powertappings-reduced-powertappings.30CopyrightInternationalElectrotechnicalCommissionProvidedbyIHSunderlicensewithIECNoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=NanyangTechnologicalUniv/5926867100NotforResale,07/01/201303:

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03MDT60076-1IEC:

2011-3-6.4Specificationoftappingsinenquiryandorder.316.4.1General.316.4.2Constructionalspecification.316.4.3Functionalspecification.326.5Specificationofshort-circuitimpedance.326.6Loadlossandtemperaturerise.337Connectionphasedisplacementsymbols.347.1Connectionandphasedisplacementsymbolsforthree-phasetransformersandforsinglephasetransformersconnectedinathreephasebank.347.1.1Connectionsymbol.347.1.2Phasedisplacementinclocknumbernotation.347.1.3Windingsnotintendedtobeloaded.357.1.4Reconnectablewindings.357.1.5Examples.357.2Connectionandphasedisplacementsymbolsforsinglephasetransformersnotinthreephasebank.377.2.1Connectionsymbol.377.2.2Phasedisplacementinclocknumbernotation.387.2.3Windingsnotintendedtobeloaded.387.2.4Reconnectablewindings.388Ratingplates.398.1General.398.2Informationtobegiveninallcases.398.3Additionalinformationtobegivenwhenapplicable.409Safety,environmentalandotherrequirements.419.1Safetyandenvironmentalrequirements.419.1.1Liquidleaks.419.1.2Safetyconsiderations.419.2Dimensioningofneutralconnection.429.3Liquidpreservationsystem.429.4DCcurrentsinneutralcircuits.439.5Centreofgravitymarking.4310Tolerances.4311Tests.4411.1Generalrequirementsforroutine,typeandspecialtests.4411.1.1General.4411.1.2Routinetests.4611.1.3Typetests.4611.1.4Specialtests.4711.2Measurementofwindingresistance.4711.2.1General.4711.2.2Dry-typetransformers.4711.2.3Liquid-immersedtypetransformers.4811.3Measurementofvoltageratioandcheckofphasedisplacement.4811.4Measurementofshort-circuitimpedanceandloadloss.4811.5Measurementofno-loadlossandcurrent.4911.6Measurementofzero-sequenceimpedance（s）onthree-phasetransformers.5011.7Testsonon-loadtap-changers-Operationtest.51CopyrightInternationalElectrotechnicalCommissionProvidedbyIHSunderlicensewithIECNoreproductionornetworkingpermittedwithoutlicensefromIHSLicensee=NanyangTechnologicalUniv/5926867100NotforResale,07/01/201303:

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03MDT-4-60076-1IEC:

201111.8Leaktestingwithpressureforliquidimmersedtransformers（tightnesstest）.5111.9Vacuumdeflectiontestforliquidimmersedtransformers.5111.10Pressuredeflectiontestforliquidimmersedtransformers.5211.11Vacuumtightnesstestonsiteforliquidimmersedtransformers.5311.12Checkofcoreandframeinsulation.5312Electromagneticcompatibility（EMC