1、NORMEINTERNATIONALEINTERNATIONALSTANDARDCEIIEC1247Premire ditionFirst edition1995-05Noyaux PM en oxydes magntiques etpices associes-DimensionsPM-cores made of magnetic oxides andassociated parts-Dimensions1ECNumro de rfrenceReference numberCEI/IEC 1247:1995LICENSED TO MECON Limited.-RANCHI/BANGALORE
2、FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Numros des publicationsDepuis le 1er janvier 1997,les publications de la CEIsont numrotes partir de 60000.Publications consolidesLes versions consolides de certaines publications dela CEI incorporant les amendements sont disponibl
3、es.Par exemple,les numros ddition 1.0,1.1 et 1.2indiquent respectivement la publication de base,lapublication de base incorporant lamendement 1,et lapublication de base incorporant les amendements 1et 2.Validit de la prsente publicationLe contenu technique des publications de la CEI estconstamment r
4、evu par la CEI afin quil reflte ltatactuel de la technique.Des renseignements relatifs la date dereconfirmation de la publication sont disponibles dansle Catalogue de la CEI.Les renseignements relatifs des questions ltude etdes travaux en cours entrepris par le comit techniquequi a tabli cette publi
5、cation,ainsi que la liste despublications tablies,se trouvent dans les documents ci-dessous:Site web de la CEI*Catalogue des publications de la CEIPubli annuellement et mis jour rgulirement(Catalogue en ligne)*Bulletin de la CEIDisponible la fois au site web de la CEI*etcomme priodique imprimTermino
6、logie,symboles graphiqueset littrauxEn ce qui concerne la terminologie gnrale,le lecteurse reportera la CEI 60050:Vocabulaire lectro-technique International(VEI).Pour les symboles graphiques,les symboles littrauxet les signes dusage gnral approuvs par la CEI,lelecteur consultera la CEI 60027:Symbole
7、s littraux utiliser en lectrotechnique,la CEI 60417:Symbolesgraphiques utilisables sur le matriel.Index,relev etcompilation des feuilles individuelles,et la CEI 60617:Symboles graphiques pour schmas.NumberingAs from 1 January 1997 all IEC publications areissued with a designation in the 60000 series
8、.Consolidated publicationsConsolidated versions of some IEC publicationsincluding amendments are available.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,tothe base publication,the base publicationincorporating amendment 1 and the base publicationincorporating amendments 1 and 2.Vali
9、dity of this publicationThe technical content of IEC publications is kept underconstant review by the IEC,thus ensuring that thecontent reflects current technology.Information relating to the date of the reconfirmation ofthe publication is available in the IEC catalogue.Information on the subjects u
10、nder consideration andwork in progress undertaken by the technicalcommittee which has prepared this publication,as wellas the list of publications issued,is to be found at thefollowing IEC sources:IEC web site*Catalogue of IEC publicationsPublished yearly with regular updates(On-line catalogue)*IEC
11、BulletinAvailable both at the IEC web site*and as aprinted periodicalTerminology,graphical and lettersymbolsFor general terminology,readers are referred toIEC 60050:International Electrotechnical Vocabulary(IEV).For graphical symbols,and letter symbols and signsapproved by the IEC for general use,re
12、aders arereferred to publications IEC 60027:Letter symbols tobe used in electrical technology,IEC 60417:Graphicalsymbols for use on equipment.Index,survey andcompilation of the single sheets and IEC 60617:Graphical symbols for diagrams.*Voir adresse site web sur la page de titre.?*See web site addre
13、ss on title page.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IECNORMEINTERNATIONALEINTERNATIONALSTANDARDCE1IEC1247Premire ditionFirst edition1995-05Noyaux PM en oxydes magntiques etpices associes-DimensionsPM-cores made of magnetic
14、 oxides andassociated parts-Dimensions CEI 1995 Droits de reproduction rservs Copyright all rights reservedAucune partie de cette publication ne peut tre reproduite niutilise sous quelque forme que ce soit et par aucun pro-cd,lectronique ou mcanique,y compris la photocopie etles microfilms,sans lacc
15、ord crit de lditeur.No part of this publication may be reproduced or utilized inany form or by any means,electronic or mechanical,including photocopying and microfilm,without permissionin writing from the publisher.Bureau Central de la Commission Electrotechnique Internationale 3,rue de Varemb Genve
16、,SuisseCommission Electrotechnique Internationale CODE PRIXInternational Electrotechnical Commission PRICE CODEMeaayHapoaHae 3nexrporexamec,tan HOMNCCHAPour prix,voir catalogue en vigueurFor price,see current catalogueMLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU._2_?1247CEI:1995SOMMAIREPagesAVANT-PROPOS?4Articles1?Domaine dapplication et objet?62 Rfrences normatives?83 Systme de conversion?84 Normes fondamentales?84.1 Dimension
