IEC_60287_2-2_Cable_Sizing.pdf

NORME CE1 INTERNATIONALE INTERNATIONAL STANDARD IEC 287-2-2 Premiere edition First edition 1995-05 Cbles lectriques-Calcul du courant admissible-Partie 2:Rsistance thermique-Section 2:Mthode de calcul des coefficients de rduction de lintensit de courant admissible pour des groupes de cbles poss lair libre et protgs du rayonnement solaire direct Electric cables-Calculation of the current rating-Part 2:Thermal resistance-Section 2:A method for calculating reduction factors for groups of cables in free air,protected from solar radiation Numro de rfrence Reference number CEI/IEC 287-2-2:1995 Copyright International Electrotechnical Commission Provided by IHS under license with IECNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Validit de la prsente publication Le contenu technique des publications de la CE1 est cons-tamment revu par la CE1 afin quil reflte ltat actuel de la technique.Des renseignements relatifs la date de reconfirmation de la publication sont disponibles auprs du Bureau Central de la CEI.Les renseignements relatifs ces rvisions,ltablis-sement des ditions rvises et aux amendements peuvent tre obtenus auprs des Comits nationaux de la CE1 et dans les documents ci-dessous:Bulletin de la CE1 Annuaire de la CE1 Publi annuellement Catalogue des publications de la CE1 Publi annuellement et mis jour rgulirement Terminologie En ce qui concerne la terminologie gnrale,le lecteur se reportera la CE1 50:Vocabulaire Electroteclmique Inter-national(VEI),qui se prsente sous forme de chapitres spars traitant chacun dun sujet dfini.Des dtails complets sur le VE1 peuvent tre obtenus sur demande.Voir galement le dictionnaire multilingue de la CEI.Les termes et dfinitions figurant dans la prsente publi-cation ont t soit tirs du VEI,soit spcifiquement approuvs aux fins de cette publication.Symboles graphiques et littraux Pour les symboles graphiques,les symboles littraux et les signes dusage gnral approuvs par la CEI,le lecteur consultera:-la CE1 27:Symboles littraux utilisei.en lectro-technique;-la CE1 417:Symboles graphiques utilisables sur le matriel.Index,relev et compilation des feuilles individuelles:-la CE1 617:Symboles graphiques pour schmas:et pour les appareils lectromdicaux,-lectriques en pratique mdicale.la CE1 878:Symboles graphiques pour quipements Les symboles et signes contenus dans la prsente publi-cation ont t soit tirs de la CE1 27,de la CE1 417,de la CE1 617 et/ou de la CE1 878,soit spcifiquement approuvs aux fins de cette publication.Publications de la CE1 tablies par le mme comit dtudes Lattention du lecteur est attire sur les listes figurant la fin de cette publication,qui numrent les publications de la CE1 prpares par le comit dtudes qui a tabli la prsente publication.Validity 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 relating to the date of the reconfirmation of the publication is available from the IEC Central Office.Information on the revision work,the issue of revised editions and amendments may be obtained from IEC National Committees and from the following IEC sources:IEC Bulletin IEC Yearbook Catalogue of IEC publications Published yearly Published yearly with regular updates Ter mi nolo gy For general terminology,readers are referred to IEC 50:International Electrotechnical Vocabulary(IEV),which is issued in the form of separate chapters each dealing with a specific field.Full details of the IEV will be supplied on request.See also the IEC Multilingual Dictionary.The terms and definitions contained in the present publi-cation 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 publications:-IEC 27:Letter symbols to be used in electrical technology;-IEC 417:Graphical symbols for use on equip-ment.Index,survey and compilation of the single sheets;-IEC 617:Graphical symbols for diagrams;and for medical electrical equipment,-equipment in medical practice.IEC 878:Graphical symbols for electromedical The symbols and signs contained in the present publi-cation have either been taken from IEC 27,IEC 417,IEC 617 and/or IEC 878,or have been specifically appro-ved for the purpose of this publication.IEC publications prepared by the same technical committee The attention of readers is drawn to the end pages of this publication which list the 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 CE1 IEC 287,212 Premiere dition First edition 1995-05 Cbles lectriques-Calcul du courant admissib