IEC IEC62271-203 Edition3.02022-05 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltageswitchgearandcontrolgear Part203:ACgas-insulated metal-enclosed switchgearforrated voltages above 52kV Appareillageahautetension- Partie 203: Appareillage sous enveloppe métallique a isolation gazeuse et a courant alternatif de tensions assignees supérieures a52 kv IEC 62271-203:2022-05(en-fr) THISPUBLICATIONISCOPYRIGHTPROTECTED Copyright@2022IEC,Geneva,Switzerland or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writingfrom either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC your local IEC member National Committee for further information. Droits de reproduction reserves. Sauf indication contraire, aucune partie de cette publication ne peut etre reproduite ni utilisee sous quelque forme que ce soit et par aucun procede, electronique ou mecanique, y compris la photocopie et les microfilms, sans I'accord écrit de I'IEc ou du Comite national de I'lEC du pays du demandeur. Si vous avez des questions sur le copyright de I'lEc ou si vous desirez obtenir des droits supplementaires sur cette publication, utilisez les coordonnees ci-apres ou contactez le Comite national de IlEc de votre pays de residence. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembe [email protected] CH-1211Geneva20 www.iec.ch Switzerland AbouttheIEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigendum or an amendment might have been published. IECpublicationssearch-webstore.iec.ch/advsearchform IEC Products & Services Portal-products.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the variety of criteria(referencenumber,text,technical publications previews. With a subscription you will always committee, ...). It also gives information on projects, replaced have access to up to date contenttailored to your needs. and withdrawn publications. Electropedia-www.electropedia.org IEC Just Published-webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology. Stay up to date on all new IEC publications. Just Published containing more than 22 300 terminological entries in English details all new publications released. Available online and and French, with equivalent terms in 19 additional languages. once a month by email. Also known as the International Electrotechnical Vocabulary (IEV) online. IECCustomerServiceCentre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre:[email protected]. Aproposde IIE La Commission Electrotechnique Internationale(lEC)est la premiere organisation mondialequi élabore etpubliedes A propos des publications IEc Le contenu technique des publications IEC est constamment revu.Veuillez vous assurer que vous possedez I'édition la plus recente, un corrigendum ou amendement peut avoir éte publie. RecherchedepublicationsIEC- IEc Products&Services Portal-products.iec.ch webstore.iec.ch/advsearchform Decouvrez notre puissant moteur de recherche et consultez Larechercheavanceepermetdetrouverdespublications IEC gratuitementtousles apercus despublications.Avec un en utilisant differents criteres (numero de reference, texte, abonnement, vous aurez toujours acces a un contenu a jour comited'études,...).Elledonneaussidesinformationssur adapteavosbesoins les projets etles publications remplacées ou retirees. Electropedia-www.electropedia.org IEc Just Published-webstore.iec.ch/justpublished Le premier dictionnaire d'électrotechnologie en ligne au Restezinforme