PD IEC/TR 62271-307:2015 BSl Standards Publication High-voltage switchgear and controlgear Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV bsi. ..making excellence a habit. PDIEC/TR62271-307:2015 PUBLISHEDDOCUMENT National foreword This Published Document is the UK implementation of IEC/TR 62271-307:2015. The UK participation in its preparation was entrusted by Technical Committee PEL/17, Switchgear, controlgear, and HV-LV co-ordination, to A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN9780580793417 ICS 29.130.10 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the StandardsPolicyandStrategyCommitteeon30September2015 Amendments/corrigenda issuedsincepublication Date Text affected PDIEC/TR 62271-307:2015 IEC IEC TR 62271-307 Edition 1.02015-09 TECHNICAL REPORT RAPPORT TECHNIQUE colour inside High-voltage switchgearand controlgear- Part 307: Guidance for the extension of validity of type tests of AC metal and solid-insulation enclosed switchgear and controlgear for rated voltages above 1kVanduptoand including52k Appareillageahautetension Partie 307: Lignes directrices pour I'extension de validite des essais de type d'appareillages en courant alternatif sous enveloppe metallique et d'isolation solide pourtensionsassignées supérieures a 1kV et jusqu'a 52kV inclus INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 29.130.10 ISBN 978-2-8322-2903-3 Warning! Make sure that you obtained this publication from an authorized distributor. Attention!Veuillezvous assurer que vous avez obtenu cette publication via un distributeuragree. ? Registered trademark of the International Electrotechnical Commissior Marque deposee de la Commission Electrotechnique Internationale