IEC IECTR62874 Edition1.02015-05 TECHNICAL REPORT Guidance on the interpretation of carbon dioxide and 2-furfuraldehyde as markers of paper thermal degradation in insulating mineral oil IEC TR 62874:2015-05(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright2015IEC,Geneva,Switzerland 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 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. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembe Fax: +41 22 919 03 00 CH-1211 Geneva 20 [email protected] Switzerland www.iec.ch About the IEC 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 Thestand-aloneapplication for consulting the entire The world's leading online dictionary of electronic and bibliographical information on IEC International Standards, electrical terms containing more than 30 0oo terms and Technical Specifications, Technical Reports and other definitions in English and French, with equivalent terms in 15 documents. Available for PC, Mac OS, Android Tablets and additional languages.Also_known as the International iPad. Electrotechnical Vocabulary (IEV) online. IECpublicationssearch-www.iec.ch/searchpub IEc Glossary-std.iec.ch/glossary The advanced search enables to find IEC publications by a More than 60 000 electrotechnical terminology entries in varietyof criteria (reference number, text, technical English and French extracted from the Terms and Definitions committee...). It also gives information on projects, replaced clause of IEC publications issued since 2002. Some entries and withdrawn publications. have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR IEc Just Published -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 also once a month by email. need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC TR 62874 Edition 1.02015-05 TECHNICAL REPORT Guidance on the interpretation of carbon dioxide and 2-furfuraldehyde as markers of paper thermal degradation in insulating mineral oil INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS29.040.10 ISBN 978-2-8322-2661-2 Warning! Make sure that you obtained this publication from an authorized distributor. emark of the International Electrotechnical Commission