IEC_60815.pdf

C O M M I S S I O N LECTROTECHNIQUE I N T E R N A T I O N A L E R A P P O R T D E L A C E 1 I N T E R N A T I O N A L E L E C T R O T E C H N I C A L C O M M I S S I O N I E C R E P O R T Publication 81 5 Premire Bdition-First edition 1986 Guide pour le choix des isolateurs sous pollution Guide for the selection of insulators in respect of polluted conditions CE1 1986 Droits de reproduction rservs-Copyright-all rights reserved Bureau Central de la Commission Electrotechnique Internationale 3,rue de Varemb Genve,Suisse Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-IEC 815 fib 4844871 0082b77 7 H Rvision de la prsente publication Le contenu technique des publications de la C E I est cons-tamment revu par la Commission afin dassurer quil reflte bien ltat actuel de la technique.Les renseignements relatifs ce travail de rvision,lta-blissement des ditions rvises et aux mises jour peuvent tre obtenus auprs des Comits nationaux de la CE I et en consultant les documents ci-dessous:O Bulletin de la C E I O Annuaire de la C E I O Catalogue des publications de la C E I Publi annuellement Terminologie En ce qui concerne la terminologie gnrale,le lecteur se reportera la Publication 50 de la C E I:Vocabulaire Electro-technique International(VEI),qui est tablie sous forme de chapitres spars traitant chacun dun sujet dfini,lIndex gnral tant publi sparment.Des dtails complets sur le VE1 peuvent tre obtenus sur demande.Les termes et dfinitions figurant dans la prsente publica-tion ont t soit repris du VEI,soit spcifiquement approuvs aux fins de cette publication.Symboles graphiques et littraux Pour les symboles graphiques,symboles littraux et signes dusage gnral approuvs par la CEI,le lecteur consul-tera:-la Publication 27 de la C E I:Symboles littraux utiliser-la Publication 6 17 de la C E I:Symboles graphiques pour en lectrotechnique;schmas.Les symboles et signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de la CE I,soit spcifiquement approuvs aux fins de cette publication.Publications de la C E I tablies par le mme Comit dEtudes Lattention du lecteur est attire sur la page 3 de la couver-ture,qui numre les publications de la C E I prpares par le Comit#Etudes qui a tabli la prsente publication.Revision of this publication The technical content of I E C publications is kept under constant review by the I E C,thus ensuring that the content reflects current technology.Information on the work of revision,the issue of revised editions and amendment sheets may be obtained from I E C National Committees and from the following I E C sources:O I E C Bulletin O I E C Yearbook O Catalogue of I E C Publications Published yearly Terminology For general terminology,readers are referred to I E C Pub-lication 50:International Electrotechnical Vocabulary(IEV),which is issued in the form of separate chapters each dealing with a specific field,the General Index being published as a separate booklet.Full details of the IEV will be supplied on request.The terms and definitions contained in the present publica-tion have either been taken from the IEV or have been specif-ically approved for the purpose of this publication.Graphical and letter symbols For graphical symbols,and letter symbols and signs ap-proved by the I E C for general use,readers are referred to:-I E C Publication 27:Letter symbols to be used in electrical technology;-I E C Publication 617:Graphical symbols for diagrams.The symbols and signs contained in the present publication have either been taken from I E C Publications 27 or 617,or have been specifically approved for the purpose of this publi-cation.I E C publications prepared by the same Technical Committee The attention of readers is drawn to the inside of the back cover,which lists I E C publications issued by the Technical Committee which has prepared the present publication.Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-C O M M I S S I O N LECTROTECHNIQUE I N T E R N A T I O N A L E R A P P O R T D E L A C E 1 I N T E R N A T I O N A L E L E C T R O T E C H N I C A L C O M M I S S I O N I E C R E P O R T Publication 81 5 Premire dition-First edition 1986 Guide pour le choix des isolateurs sous pollution Guide for the selection of insulators in respect of polluted conditions O CE1 1986 Droits de reproduction rservs-Copyright-all rights resenred Aucune partie de cette publication ne peut&re reproduite ni utilise sous quelque f m a que w soit et par aucun procdb,lectronique ou mcanique,y conyris la photocopis et Iss microfilms,sans laccord Bwit de lditeur.Na part of this publihon mey be nyroduced or utilized in sny form or by any means,electronic or mechanical,including photompying and minofilm,without permission m writiw from the publi