IEC60050-351Edition4.02013-11INTERNATIONALSTANDARDNORMEINTERNATIONALEInternationalelectrotechnicalvocabulary–Part351:ControltechnologyVocabulaireélectrotechniqueinternational–Partie351:TechnologiedecommandeetderégulationIEC60050-351:2013HORIZONTALSTANDARDNORMEHORIZONTALE®CopyrightedmateriallicensedtoBRDemobyThomsonReuters(Scientific),Inc.,subscriptions.techstreet.com,downloadedonNov-27-2014byJamesMadison.Nofurtherreproductionordistributionispermitted.UncontrolledwhenprinteTHISPUBLICATIONISCOPYRIGHTPROTECTEDCopyright©2013IEC,Geneva,SwitzerlandAllrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromeitherIECorIEC'smemberNationalCommitteeinthecountryoftherequester.IfyouhaveanyquestionsaboutIECcopyrightorhaveanenquiryaboutobtainingadditionalrightstothispublication,pleasecontacttheaddressbeloworyourlocalIECmemberNationalCommitteeforfurtherinformation.Droitsdereproductionréservés.Saufindicationcontraire,aucunepartiedecettepublicationnepeutêtrereproduiteniutiliséesousquelqueformequecesoitetparaucunprocédé,électroniqueoumécanique,ycomprislaphotocopieetlesmicrofilms,sansl'accordécritdel'IECouduComiténationaldel'IECdupaysdudemandeur.Sivousavezdesquestionssurlecopyrightdel'IECousivousdésirezobtenirdesdroitssupplémentairessurcettepublication,utilisezlescoordonnéesci-aprèsoucontactezleComiténationaldel'IECdevotrepaysderésidence.IECCentralOfficeTel.:+412291902113,ruedeVarembéFax:+41229190300CH-1211Geneva20info@iec.chSwitzerlandwww.iec.chAbouttheIECTheInternationalElectrotechnicalCommission(IEC)istheleadingglobalorganizationthatpreparesandpublishesInternationalStandardsforallelectrical,electronicandrelatedtechnologies.AboutIECpublicationsThetechnicalcontentofIECpublicationsiskeptunderconstantreviewbytheIEC.Pleasemakesurethatyouhavethelatestedition,acorrigendaoranamendmentmighthavebeenpublished.Usefullinks:IECpubli...