1、NORME INTERNATIONALE INTERNATIONAL STANDARD Commission Electrotechnique Internationale International Electrotechnical Commission MeAyHapOHafl3nepoexreca1 KOMMCCMFI CE1 IEC 62 1-2 Deuxime dition Second edition 1987 Installations lectriques pour chantiers extrieurs sa-mis des conditions svres(y compri
2、s mines ciel ouvert et carrires)Deuxime partie:Prescriptions gnrales de protection Electrical installations for outdoor sites under heavy conditions(including open-cast mines and quarries)Part 2:General protection requirements Publication 621-2:1987 Copyright International Electrotechnical Commissio
3、n 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 constam-ment revu par la Commission afin dassurer quil reflte bien ltat actuel de la techni
4、que.Les renseignements relatifs ce travail de rvision,ltablis-sement 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:Bulletin de la CE I Annuaire de la CE I Catalogue des publications de la CE I Publi annuelleme
5、nt Revision of this publication The technical content of I EC publications is kept under con-stant review by the I EC,thus ensuring that the content reflects current technology.Information on the work of revision,the issue of revised edi-tions and amendment sheets may be obtained from I EC National
6、Committees and from the following I EC sources:IEC Bulletin IEC Yearbook Catalogue of IEC Publications Published yearly Terminologie Terminology En ce qui concerne la terminologie gnrale,le lecteur se repor-tera la Publication 50 de la CE I:Vocabulaire Electrotechnique International(VEI),qui est tab
7、lie sous forme de chapitres spars traitant chacun dun sujet dfini,lIndex gnral tant publi spa-rment.Des dtails complets sur le VE1 peuvent 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 publ
8、ication.For general terminology,readers are referred to I EC Publi-cation 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 supp
9、lied 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.Symboles graphiques et littraux Graphical and letter symbols Pour les symboles graphiques,symboles littraux et sig
10、nes For graphical symbols,and letter symbols and signs approved dusage gnral approuvs par la CE I,le lecteur consultera:by the I EC for general use,readers are referred to:-la Publication 27 de la CEI:Symboles littraux utiliser en-la Publication 617 de la CEI:Symboles graphiques pour Les symboles et
11、 signes contenus dans la prsente publication ont t soit repris des Publications 27 ou 617 de la CEI,soit spcifi-quement approuvs aux fins de cette publication.lectrotechnique;schmas.Publications de la CE1 tablies par le mme Comit dEtudes Lattention du lecteur est attire sur le deuxime feuillet de la
12、 couverture,qui numre les publications de la CE I prpares par le Comit#Etudes qui a tabli la prsente publication.-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
13、 either been taken from I EC Publications 27 or 617,or have been specifically approved for the purpose of this publication.I EC publications prepared by the same Technical Committee The attention of readers is drawn to the back cover,which lists I EC publications issued by the Technical Committee wh
14、ich 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 Com m issio n Elect rotec h n iq ue I n t
15、erna t io na le International Electro-technical Commission CE1 IEC 62 1-2 Deuxime dition Second edition 1987 Installations lectriques pour chantiers extrieurs soumis des conditions svres(y compris mines ciel ouvert et carrires)Deuxime partie:Prescriptions gnrales de protection Electrical installatio
16、ns for ou.door sites under heavy conditions(including open-cast mines and quarries)Part 2:General protection requirements O CE I 1987 Droits de reproduction rservs-Copyright-all rights reserved Aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd,lectronique ou mcanique.y compris la photocopie et les microfilms,sans laccord cnt de lditeur.No part of this publication m y be reproduced or utilized in any fom or by any means.electron
