IEC IEC61156-1-4 Edition 1.0 2018-10 INTERNATIONAL STANDARD colour inside Multicore and symmetrical pairlquad cables for digital communications - Part 1-4: Assessment of conductor heating in bundled cables due to the deployment of remote powering THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2018 IEC, Geneva, Switzerland your local IEC member National Committee for further information. IECCentralOffice Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland AbouttheIEC International Standards for all electrical, electronic and related technologies. AboutIECpublications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEc Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org The stand-alone application for consulting the The world's leading online dictionary of electronic and entire bibliographical informationonIEC InternationalStandards, electrical terms containing 21 000 terms and definitions in Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional documents.Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical iPad. Vocabulary (IEV) online. IECpublicationssearch-webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary The advanced search enables to find IEC publications by a 67000 electrotechnicalterminologyentries inEnglishand variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of committee,..). It also gives information on projects, replaced IECpublications issuedsince2002.Someentrieshavebeen and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and CISPR. IECJustPublished-webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published IECCustomerServiceCentre-webstore.iec.ch/csc details all new publications released.Available online and If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service alsoonceamonthbyemail Centre: [email protected]. IEC IEC61156-1-4 Edition 1.0 2018-10 INTERNATIONAL STANDARD colour inside Multicore and symmetrical pairlquad cables for digital communications - Part 1-4: Assessment of conductor heating in bundled cables due to the deployment of remote powering INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.120.20 ISBN 978-2-8322-5968-9 Warning! Make sure that you obtained this publication from an authorized distributor. ?Registered trademark of the International Electrotechnical Commission