IEC IEC60721-2-3 Edition 2.0 2013-06 INTERNATIONAL STANDARD NORME INTERNATIONALE Inc.. Classification of environmental conditions - Part 2-3: Environmental conditions appearing in nature - Air pressure Classification des conditions d'environnement - Partie 2-3: Conditions d'environnement présentes dans la nature - Pression atmospherique IEC 60721-2-3:2013 material licensed to THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2013 IEC, Geneva, Switzerland BRDemoby All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's memberNational Committee inthe country of the requester. please contact the address below or your local IEC member National Committee for further information. Thomson Droits de reproduction reserves. Sauf indication contraire, aucune partie de cette publication ne peut etre reproduite ni utilisee sous quelqueforme que ce soit etparaucun procede,électronique ou mecanique,y compris laphotocopie et les microfilms, sans I'accord ecrit de la CEl ou du Comite national de la CEi du pays du demandeur. Reuters( Si vous avez des questions sur le copyright de la CEl ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de la CEl de votre pays de residence. (Scientific), Inc., IEC Central Office Tel.: +4122 919 02 11 3, rue de Varembé Fax: +4122919 03 00 CH-1211 Geneva 20 [email protected] Switzerland www.iec.ch About theIEC International Standards for all electrical,electronic and related technologies. About IEC publications The technical content of IEC publications iskeptunder constant review by the IEC. Please make sure that you have the latest edition, a corrigenda oran amendment might have been published. Useful links: .com, IECpublications search-www.iec.ch/searchpub Electropedia www.electropedia.org Theadvanced search enables you to find IEC publications The world's leading online dictionary of electronic and by a variety of criteria (reference number, text, technical electrical terms containing more than 30 000 terms and committee..... definitions in English and French, with equivalent terms in It also gives information on projects, replaced and additional languages. Also known as the International withdrawn publications. Electrotechnical Vocabulary (IEV) on-line. IEC Just Published -webstore.iec.ch/justpublished Customer Service Centre -webstore.iec.ch/csc Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication details all new publications released.Available on-line and or needfurtherassistance,please contact the Customer Service Centre: [email protected]. also once a month by email. A propos de la CEI LaCommission Electrotechnique Internationale(CEl)estla premiere organisationmondiale qui elaboreet publiedes A propos des publications CEl Le contenutechnique despublicationsdela CElestconstammentrevu.Veuillezvous assurerquevouspossedez I'édition la plus recente, un corrigendum ou amendement peut avoir éte publie. Liens utiles: Recherche de publications CEl - www.iec.ch/searchpub Electropedia -www.electropedia.org Larecherche avanceevous permet de trouver des Le premier dictionnaire en ligne au monde de termes publications CEl en utilisant differents criteres (numero de electroniques et électriques. Il contient plus de 30 000 reference,texte,comite d'etudes,...) termes et definitions en anglais et en francais, ainsi que Elle donne aussi des informations sur les projets et les les termes équivalents dans les langues additionnelles. or publications remplacees ouretirées. Egalement appele Vocabulaire Electrotechnique distribution International (VEl) en ligne Just Published CEl-webstore.iec.ch/justpublished Service Clients - webstore.iec.ch/csc Restez informe sur les nouvelles publications