IEC TEC 60287-2-3 Edition 2.02024-06 REDLINE VERSION INTERNATIONAL STANDARD colour inside Electric cables - Calculation of the current rating - Part 2-3: Thermal resistance - Cables installed in ventilated tunnels IEC 60287-2-3:2024-06 RLV(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2024 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. if you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or yourlocal IECmemberNational Committeeforfurtherinformation. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembe [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC 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 latestedition,a corrigendum oran amendmentmight havebeenpublished. IEC publications search - webstore.iec.ch/advsearchform IEc Products & Services Portal - products.iec.ch Discover our powerful search engine and read freely all the varietyofcriteria(reference number,text,technical publications previews, graphical symbols and the glossary. committee, ...). It also gives information on projects, replaced With a subscription you wili always have access to up to date and withdrawn publications. content tailored to your needs IEc Just Published - webstore.iec.ch/justpublished Electropedia-www.electropedia.org Stay up to date on all new IEC publications. Just Published The world's leading online dictionary on electrotechnology, details all newpublications released.Availableonline andonce containing more than 22 500 terminological entries in English a month by email. and French, with equivalent terms in 25 additional languages. Also known as the International Electrotechnical Vocabulary IECCustomerServiceCentre-webstore.iec.ch/csc (IEV) online If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC 60287-2-3 Edition 2.0 2024-06 REDLINE VERSION NTERNATIONAL STANDARD colour inside Electric cables - Calculation of the current rating - Part 2-3: Thermal resistance - Cables installed in ventilated tunnels INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS29.060.20 ISBN 978-2-8322-9370-6 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commission