IEC_621_5_1987.pdf

NORME INTERNATIONALE INTERNATIONAL STANDARD-.,Commission Electrotechnique lternationale International Electrotechnical Commission MexnyHapogHaH 3nepoex1isecari Kowiccm I Installations lectriques pour chantiers extrieurs soumis des conditions svres(y compris mines ciel ouvert et carrires)1 Cinquime partie:Prescriptions fonctionnelles Electrical installations for outdoor sites under heavy conditions(including open-cast mines and quarries)Part 5:Operating requirements CEI IEC 621-5 I Premire dition First edition 1987,-f-i.)-Publication 621-5:1987 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Rvision de la prsente publication Le contenu technique des publications de la CE1 est constamment revu par la Commission afin dassurer quil reflte bien ltat actuel de la technique.Les renseignements relatifs ce travail de rvision,ltablissement des ditions rvises et aux mises jour peuvent tre obtenus auprs des Comits nationaux de la CE1 et en consultant les documents ci-dessous.:O Bulletin de la CE1 O Annuaire de la CE1 O Catalogue des publications de la CE1 Publi annuellement Terminologie En ce qui concerne la terminologie gnrale,le lecteur se reportera la Publication 50 de la CEI:Vocabulaire Electro-technique International(VEI),qui est tablie sous forme de cha-pitres spars traitant chacun dun sujet dfini,lIndex gnral tant publi sparment.Des dtails complets sur le VE1 peu-vent tre obtenus sur demande.Les termes et dfinitions figurant dans la prsente publication 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 C EI,le lecteur consultera:-la Publication 27 de la C EI:Symboles littraux utiliser en lectrotechnique;-la Publication 617 de la CEI:Symboles graphiques pour schmas.Les symboles et signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de la CEI,soit spcifiquement approuvs aux fins de cette publication.Publications de la CE1 tablies par le mme Comit dEtudes Lattention du lecteur est attire sur le deuxime feuillet de la couverture,qui numre les publications de la CE1 prpares par le Comit dEtudes qui a tabli la prsente publication.Revision of this publication The technical content of IEC publications is kept under constant review by the IEC,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 IEC National Committees and from the following I E C sources:IEC Bulletin O IEC Yearbook O Catalogue of IEC Publications Published yearly Terminology For general terminology,readers are referred to I EC Publication 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 publication have either been taken from the IEV or have been specifically approved for the purpose of this publication.Graphical and letter symbols For graphical symbols,and letter symbols and signs approved by the IEC for general use,readers are referred to:-I EC Publication 27:Letter symbols to be used in electrical-I EC Publication 617:Graphical symbols for diagrams.technology;The symbols and signs contained in the present publication have either been taken from IEC Publications 27 or 617,or have been specifically approved for the purpose of this publication.TEC publications prepared by the same Technical Committee The attention of readers is drawn to the back cover,which lists IEC 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-,-,-NORME INTERNATIONALE INTERNATIONAL STANDARD Commission Electrotechnique Internationale International Electrotechnical Commission MexcjqyaapojqHaR%eIcTpoTexHmec?IcaR XomccIIH Installations lectriques pour chantiers extrieurs soumis des conditions svres(y compris mines ciel ouvert et carrires)Cinquime partie:Prescriptions fonctionnelles Electrical installations for outdoor sites under heavy conditions(including open-cast mines and quarries)Part 5:Operating requirements O CE1 1987 Droits de reproduction rservs-Copyright-all rights reserved Aucune parlie de cene publication ne peut Btre reproduite ni utilise sous quelque forme que soit et par a w n procd.lectmnique w mcanique,y compris la photampie et les microfilms.sans i m r d&rit de iditeur.l o pari of this publicah may be repmduced or utilized in any form o r by any means,electrooic or meEhanical,including photocopying and mie