IEC60076-21Edition1.0�2011-12INTERNATIONALSTANDARDPowertransformers–Part21:Standardrequirements,terminology,andtestcodeforstep-voltageregulatorsIEC60076-21:2011(E)IEEEStd.C57.15-2009IEEEStdC57.15™CopyrightedmateriallicensedtoBRDemobyThomsonReuters(Scientific),Inc.,subscriptions.techstreet.com,downloadedonNov-28-2014byJamesMadison.Nofurtherreproductionordistributionispermitted.UncontrollTHISPUBLICATIONISCOPYRIGHTPROTECTEDCopyright©2009IEEEAllrightsreserved.IEEEisaregisteredtrademarkintheU.S.Patent&TrademarkOffice,ownedbytheInstituteofElectricalandElectronicsEngineers,Inc.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromtheIECCentralOffice.AnyquestionsaboutIEEEcopyrightshouldbeaddressedtotheIEEE.EnquiriesaboutobtainingadditionalrightstothispublicationandotherinformationrequestsshouldbeaddressedtotheIECoryourlocalIECmemberNationalCommittee.IECCentralOfficeTheInstituteofElectricalandElectronicsEngineers,Inc3,ruedeVarembé3ParkAvenueCH-1211Geneva20US-NewYork,NY10016-5997SwitzerlandUSAEmail:inmail@iec.chEmail:stds-info@ieee.orgWeb:www.iec.chWeb:www.ieee.orgAbouttheIECTheInternationalElectrotechnicalCommission(IEC)istheleadingglobalorganizationthatpreparesandpublishesInternationalStandardsforallelectrical,electronicandrelatedtechnologies.AboutIECpublicationsThetechnicalcontentofIECpublicationsiskeptunderconstantreviewbytheIEC.Pleasemakesurethatyouhavethelatestedition,acorrigendaoranamendmentmighthavebeenpublished.�CatalogueofIECpublications:www.iec.ch/searchpubTheIECon-lineCatalogueenablesyoutosearchbyavarietyofcriteria(referencenumber,text,technicalcommittee,…).Italsogivesinformationonprojects,withdrawnandreplacedpublications.�IECJustPublished:www.iec.ch/online_news/justpubStayuptodateonallnewIECpublications.JustPublisheddetailstwiceamonthallnewpublicationsreleased.Availableon-lineandalsobyemail.�Electropedia:www.electropedia.orgT...
