IEC IEC61557-11 Edition 2.02020-06 REDLINE VERSION NTERNATIONAL STANDARD colour inside Electrical safety in low voltage distribution systems up to 1 ooo V AC and 1 5oo V DC - Equipment for testing, measuring or monitoring of protective measures- Part 11: Effectiveness of residual current monitors (RCM)-type A and type B in TT, TN and IT systems IEC 61557-11:2020-06 RLV(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2020 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from your local IEC member National Committee for further information. IEC CentralOffice Tel.: +4122 919 02 11 3,rue de Varembe [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About theIEC 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 latest edition,a corrigendum oranamendment might have beenpublished IEC publications search - webstore.iec.ch/advsearchform Electropedia-www.electropedia.org The world's leading online dictionary on electrotechnology criteria(reference number,text, technical containing more than 22 000 terminological entries in English varietyof and French, with equivalent terms in 16 additional languages committee,...). It also gives information on projects, replaced Also known as the International Electrotechnical Vocabulary and withdrawn publications. (IEV) online. IEc Just Published - webstore.iec.ch/justpublished IEc Glossary - std.iec.ch/glossary Stay upto date on all new IEC publications. Just Published details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and once a month by email. French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been IECCustomerServiceCentre-webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and If you wish to give us your feedback on this publication or CISPR. need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC61557-11 Edition 2.0 2020-06 REDLINEVERSION INTERNATIONAL STANDARD colour inside Electrical safety in low voltage distribution systems up to 1 ooo V AC and 1 5oo V DC - Equipment for testing, measuring or monitoring of protective measures- Part 11: Effectiveness of residual current monitors (RcM)type A and type B in TT, TN and IT systems INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 17.220.20; 29.080.01; 29.240.01 ISBN 978-2-8322-8578-7 Warning! Make sure that you obtained this publication from an authorized distributor.