IEC_60027-1-1992_1995_scan.pdf

Validite de la presente publicationValidity of this publicationLe contenu technique des publications de la CEl est cons-The technical content of IEC publications is kept undertamment revu par la CEl afin quil reflete letat actuel deconstant review by the IEC,thus ensuring that the contentla technique.reflects current technology.Des renseignements relatifs a la date de reconfirmation deInformation relating to the date of the reconfirmation of thela publication sont disponibles aupres du Bureau Central depublication is available from the IEC Central Office.la CEl.Les renseignements relatifs a ces revisions,a letablis-Information on the revision work,the issue of revisedsement des editions revisees et aux amendements peuventeditions and amendments may be obtained from IECetre obtenus aupres des Comites nationaux de la CEl etNational Committees and from the following IECdans les documents ci-dessous:sources:Bulletin de la CElIEC BulletinAnnuaire de la CElIEC YearbookPublie annuellementPublished yearlyCatalogue des publications de la CElCatalogue of IEC publicationsPublie annuellement et mis a jour regulierementPublished yearly with regular updatesTerminologieTerminologyEn ce qui conceme la terminologie generale,le lecteur seFor general terminology,readers are referred to IEC 50:reportera a la CEl 50:Vocabulaire Electrotechnigue Inter-International Electrotechnical Vocabulary(IEV),which isnationa/(VEl),qui se presente sous forme de chapitresissued in the form of separate chapters each dealingsepares traitant chacun dun sujet defini.Des detailswith a specific field.Full details of the IEV will becomplets sur le VEI peuvent etre obtenus sur demande.supplied on request.See also the IEC MultilingualVoir egalement le dictionnaire multilingue de la CEl.Dictionary.Les termes et definitions figurant dans la presente publi-The terms and definitions contained in the present publi-cation ont ete soit tires du VEl,soit specifiquementcation have either been taken from the IEV or have beenapprouves aux fins de cette publication.specifically approved for the purpose of this publication.Symboles graphiques et litterauxGraphical and letter symbolsPour les symboles graphiques,les symboles litteraux et lesFor graphical symbols,and letter symbols and signssignes dusage general approuves par la CEl,le lecteurapproved by the IEC for general use,readers are referred toconsultera:publications:la CEl 27:Symboles litteraux a utiliser enIEC 27:Letter symbols to be used in electricalelectro-technique;technology;la CEl 417:Symboles graphiques utilisablesIEC 417:Graphical symbols for use onsur le materiel.Index,releve et compilation desequipment.Index,survey and compilation of thefeuilles individuelles;single sheets;la CEl 617:Symboles graphiques pour schemas;IEC 617:Graphical symbols for diagrams;et pour les appareils electromedicaux,and for medical electrical equipment,la CEl 878:Symboles graphiques pourIEC 878:Graphical symbols for electromedicalquipements electriques en pratique medicale.equipment in medical practiceLes symboles et signes contenus dans la presente publi-The symbols and signs contained in the present publicationcation ont te soit tires de la CEl 27,de la CEl 417,de lahave either been taken from IEC 27,IEC 417,IEC 617CEI 617 et/ou de la CEI 878,soit specifiquement approuvesand/or IEC 878,or have been specifically approved for theaux fins de cette publication.purpose of this publication.Publications de la CEl etablies par leIEC publications prepared by the samememe comite detudestechnical committeeLattention du lecteur est attiree sur les listes figurant a la finThe attention of readers is drawn to the end pages of thisde cette publication,qui enumerent les publications de lapublication which list the IEC publications issued by theCEl preparees par le comite detudes qui a etabli latechnical committee which has prepared the presentpresente publication.publication.NORMECEIINTERNATIONALEIECINTERNATIONAL27-1STANDARDSixieme editionSixth edition1992Corrigee et reimprimeeCorrected and reprinted1995-03-31Symboles litterauxa utiliser en lectrotechniquePartie 1:GneralitesLetter symbolsto be used in electrical technologyPart 1:GeneralCEI 1992 Droits de reproduction rservs-Copyright-all rights reservedAucune partie de cette publication ne peut tre reproduite ni No part of this publication may be reproduced or utilized inutilisee sous quelque forme que ce soit et par aucun pro-any form or by any means,electronic or mechanical,cede,electronique ou mecanique,y compris la photocopie etincluding photocopying and microfilm,without pormissionles microfilms,sans laccord ecrit de lediteur.in writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3,rue de Varemb Geneve,SuisseCommission Electrotechnique InternationaleCODE PRIXIECInternational Electrotechnical CommissionPRICE CODEXAMeayHapoAHaR neTpoTexHHecHaR HoMHCCHAPour prix,voir catalogue en vigueurFor price,see current catalogue2-27-1CCEISOMMAIREPagesAVANT-PROPOS.6SECTION 0:GENERALITESDomaine dapplication.8SECTION 1:RECOMMANDATIONS POUR LIMPRESSION DES SYMBOLESET DES NOMBRESArticles1.1 Symboles des grandeurs.81.1.1 Symboles.81.1.2 Regles pour Iimpression des indices et Iemploi des indices en lectrotechnique.81.1.3 Regles.101.1.4 Combinaison des symboles de grandeurs;oprations lmentaires sur les grandeurs161.1.5 Substitution de lettres.181.2 Noms et symboles dunites.181.2.1 Symboles internationaux dunites.181.2.2 Combinaison des symboles dunites.201.2.3 Impression des symboles dunites.201.2.4 Impression et emploi des prefixes.221.2.5 Orthographe des noms dunits en langue anglaise.241.3 Nombres.241.3.1 Impression des nombres.241.3.2 Signe decimal.241.3.3 Multiplication des nombres.241.4 Signes et symboles mathematiques.241.5 Expressions des grandeurs.241.6 Reprsentation complexe des grandeurs.26SECTION 2:RECOMMANDATIONS GENERALES POURLES GRANDEURS FONCTIONS DU TEMPS2.1 Grandeurs qui varient priodiquement dans le temps.282.2 Grandeurs qui varient non priodiquement dans le temps.28SECTION 3:SYMBOLES DES GRANDEURS ET DE LEURS UNITES,CONSTANTES SELECTIONNEES ET SIGNES3.1 Introduction aux tableaux des grandeurs et de leurs units.32Tableau 1 Symboles des grandeurs et de leurs unites.34Tableau 2 Symboles des constantes.54Tableau 3 Liste alphabtique des symboles des grandeurs mentionns dans les tableaux 1et2.56Tableau 4 Liste alphabtique des symboles dunits mentionns dans le tableau 1.58Tableau 5 Liste alphabtique des noms de grandeurs et des constantes mentionns dansles tableaux 1 et2.603.2 Introduction aux tableaux des indices.65Tableau 6 Indices recommandes.66Tableau 6a Exemples dapplication.74Tableau 7 Liste alphabtique dindices infrieurs du tableau6.7627-1IEC-3-CONTENTSPageFOREWORD.7SECTION 0:GENERALScope.9SECTION 1:RECOMMENDATIONS FOR PRINTING SYMBOLSAND NUMBERSClause1.1 Symbols for quantities.91.1.1 Symbols.91.1.2 Rules for printing of subscripts and use of subscripts in electrical technology.91.1.3 Rules.111.1.4 Combination of symbols for quantities;elementary operations with quantities.171.1.5 Substitution of letters.191.2 Names and symbols for units.191.2.1 International symbols for units.191.2.2 Combination of symbols for units.211.2.3 Printing of symbols for units.211.2.4 Printing and use of prefixes.231.2.5 Spelling of names of units in the English language.251.3 Numbers.251.3.1 Printing of numbers.251.3.2 Decimal sign.251.3.3 Multiplication of numbers.251.4 Mathematical signs and symbols.1.5 Expressions for quantities.251.6 Complex representation of quantities.SECTION 2:GENERAL RECOMMENDATIONSFOR TIME-DEPENDENT QUANTITIES2.1 Quantities that vary with time periodically.292.2 Quantities that vary with time non-periodically.29SECTION 3:SYMBOLS FOR QUANTITIES AND THEIR UNITS,SELECTED CONSTANTS AND SIGNS3.1 Introduction to tables for quantities and their units.33Table 1 Symbols for quantities and their units.35Table 2 Symbols for constants.55Table 3 Alphabetical list of symbols for quantities and for constants mentioned in Tables 1and2.56Table 4 Alphabetical list of symbols for units mentioned in Table 1.58Table 5 Alphabetical list of names of quantities and of constants mentioned in Tables 1and2.613.2 Introduction to the tables for subscripts.65Table 6 Recommended subscripts.66Table 6a Illustrative examples.74Table 7 Alphabetical list of subscripts inTable 6.76