BSENIEC61557-12:2022+A1:2022 BSl Standards Publication Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures Part 12: Power metering and monitoring devices (PMD) bsi. BS ENIEC 61557-12:2022+A1:2022 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN IEC 61557- 12:2022+A1:2022. It is identical to IEC 61557-12:2018 incorp0rating amendment 1:2021. It supersedes BS EN IEC 61557-12:2022, which will be withdrawn on 14 December 2021. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by A Al. The UK participation in its preparation was entrusted to Technical Committee PEL/85, Measuring equipment for electrical and electromagnetic quantities. A list of organizations represented on this committee can be obtained on request to its committee manager. Contractual and legal considerations This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BsI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law This publication is provided as is, and is to be used at the recipient's own risk. The recipient is advised to consider seeking professional guidance with respect to its use of this publication. This publication is not intended to constitute a contract. Users are responsible for its correct application. This publication has been prepared under a mandate given to the European Standards Organizations by the European Commission and the of the EU legislation detailed in the European Foreword. A European Annex, usually Annex ZA or ZZ, describes how this publication relates to that EU legislation. For the Great Britain market (England, Scotland and Wales), if UK Government has designated this publication for conformity with UKCA marking (or similar) legislation, it may contain an additional National Annex. Where such a National Annex exists, it shows the correlation between this publication and the relevant UK legislation. If there is no National Annex of this kind, the relevant Annex ZA or ZZ in the body oftheEuropeantextwillindicatetherelationshiptoUKregulation applicable in Great Britain. References to EU legislation may need to be read in accordance with the UK designation and the applicable UK law. Further information on designated standards can be found at www.bsigroup.com/standardsandregulation. For the Northern Ireland market, UK law will continue to implement relevant EU law subject to periodic confirmation. Therefore Annex ZA/zZ in the European text, and references to EU legislation, are still valid forthismarket. BRITISH STANDARD BSENIEC 61557-12:2022+A1:2022 UK Government is responsible for legislation. For information on legislation and policies relating to that legislation, consult the relevant pages of www.gov.uk. @ The British Standards Institution 2022 Published by BSI Standards Limited 2022 ISBN9780539059243 ICS 17.220.20; 29.080.01; 29.240.01 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2022. Amendments/corrigenda issued since publication Date Text affected 30June2022 Implementation of IEC amendment 1:2021 with CENELEC endorsement A1:2022