IEC IEC61950 Edition 3.0 2019-09 INTERNATIONAL STANDARD Cable management systems - Specifications for extra-heavy-duty electrical steel conduit fittings and accessories IEC 61950:2019-09(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2019 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or iEC's member National Committee in the country of the requester. Iif you have any questions about iEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland AbouttheIEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards forall electrical, electronic and related technologies. AboutIECpublications latest edition, a corrigendum or an amendment might have been published. IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology, variety criteria (reference number, text, technical containing more than 22 000 terminological entries in English of committee...). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages. Also known as the International Electrotechnical Vocabulary and withdrawn publications. (IEV) online. IEc Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published IEc Glossary - std.iec.ch/glossary details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and once a month by email. French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been IECCustomerServiceCentre-webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and If you wish to give us your feedback on this publication or CISPR. need further assistance, please contact the Customer Service Centre:[email protected] IEC IEC 61950 Edition3.02019-09 INTERNATIONAL STANDARD Cable management systems - Specifications for extra-heavy-duty electrical steel conduit fittings and accessories INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.120.10 ISBN 978-2-8322-7373-9 Warning! Make sure that you obtained this publication from an authorized distributor.