IEC_60909_2_1992.pdf

TECHNICALIECREPORT909-2First edition1992-11Electrical equipment-Data for short-circuitcurrent calculations in accordance withIEC 909(1988)Matriel lectrique-Donnes pour le calculdes courants de court-circuit conformmenta la CEI 909(1988)IECReference numberIEC 909-2(E):1992Validite de la presente publicationValidity of this publicationLe contenu technique des publications de la CEI est cons-The technical content of IEC publications is kept undertamment revu par la CEI afin quil reflete ltat 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 ofla publication sont disponibles aupres du Bureau Centralthe publication is available from the IEC Central Office.de la CEILes renseignements relatifs a ces revisions,a Ietablis-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 CEI etNational Committees and from the following IEC sources:dans les documents ci-dessous:Bulletin de la CEIIEC BulletinAnnuaire de la CEIIEC YearbookPublie annuellementPublished yearlyCatalogue des publications de la CEICatalogue of IEC publicationsPublie annuellement et mis a jour regulierementPublished yearly with regular updatesTerminologieTerminologyEn ce qui concerne la terminologie generale,le lecteur seFor general terminology,readers are referred to IEC 50:reportera la CEI 50:Vocabulaire Electrotechnique Inter-International Electrotechnical Vocabulary(IEV),whichnational(VEI),qui se presente sous forme de chapitresis issued in the form of separate chapters each dealingspares traitant chacun dun sujet dfini.Des dtailswith 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 CEI.Dictionary.Les termes et definitions figurant dans la presente publi-The terms and definitions contained in the present publi-cation ont t soit tirs du VEI,soit spcifiquementcation have either been taken from the IEV or have beenapprouves aux fins de cette publicationspecifically 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 CEI.le lecteurapproved by the IEC for general use,readers are referredconsultera:to publications:-la CEI 27:Symboles litueraux d utiliser en electro-IEC 27:Letter symbols to be used in electricaltechnique;technology:-la CEI 417:Symboles graphiques utilisables sur le-IEC 417:Graphical symbols for use on equirmatriel.Index,relev et compilation des feuillesment.Index,survey and compilation of the singl.individuelles;sheets.-la CEI 617:Symboles graphiques pour schemas-IEC 617:Graphical symbols for diagrams;et pour les appareils electromedicaux.and for medical electrical equipment.-la CEI 878:Symboles graphiques pour equipements-IEC 878:Graphical symbols for electromedicalelectriques en pratique medicaleequipment in medical practiceLes symboles et signes contenus dans la presente publi-The symbols and signs contained in the present publi-cation ont ete soit tires de la CEI 27.de la CEI 417.decation have either been taken from IEC 27,IEC 417,la CEI 617 et/ou de la CEI 878,soit specifiquementIEC 617 and/or IEC 878,or have been specifically appro-approuves aux fins de cette publicationved for the purpose of this publication.Publications de la CEI etablies par le memeIEC publications prepared by the samecomite detudestechnical committeeLattention du lecteur est attiree sur les listes figurant a laThe attention of readers is drawn to the end pages of thisfin de cette publication.qui numerent les publications depublication which list the IEC publications issued byla CEI preparees par le comite detudes qui a etabli lathe technical committee which has prepared the presentpresente publicationpublication.TECHNICALIECREPORT909-2First edition1992-11Electrical equipment-Data for short-circuitcurrent calculations in accordance withIEC 909(1988)Materiel electrique-Donnees pour le calculdes courants de court-circuit conformement la CEI 909(1988)CEI 1992 Droits de reproduction rservs-Copyright-al rights reservedAucume partie de cette publication ne peut ere reproduite ni No part of this publication may be reproduced or utlized inutise sous queque forme que ce soit et par aucun pro-borm or by any mears,o mechanical,od6.lectronique ou mcanique.y compris la photocopie etincluding photocopying and microlilm,without permissionles microims,sans accord&crit de ditourin writing from the publisherBureau Central de la Commission Electrotechnique Intemationale 3.rue de Varemb Genve,SuisseCODE PRIXCommission Electrotechnique InternationaleIECPRICE CODESInternational Electrotechnical CommissionMeHapoHaR 3neTpoTexHecHaR HoMHHAPour prix.voir catalogue en vigueurFor price,see current calalogue909-2IEC-3-CONTENTSPageFOREWORD5ClauseSECTION 1:GENERAL1.1 Scope and object71.2 Reference documents7SECTION 2:DATA FOR ELECTRICAL EQUIPMENT2.1 General72.2 Data on typical synchronous machines82.3 Data on typical transformers,two-winding,three-winding and auto-transformers.102.4 Data on typical overhead lines,single and double circuit.142.5 Data on typical low-and high-voltage cables182.6 Data on typical asynchronous motors.212.7 Busbars21