IEC IEC61558-2-20 Edition 3.02022-12 REDLINE VERSION INTERNATIONAL STANDARD colour inside GROUP SAFETY PUBLICATION Safety of transformers, reactors, power supply units and combinations thereof - Part 2-2o: Particular requirements and tests for small reactors IEC61558-2-20:2022-12RLV(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2022 IEC, Geneva, Switzerland or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or your local IEC member National Commitee for further information. IEC Secretariat Tel.: +41 22 919 02 11 3, rue de Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications latest edition,a corrigendum oran amendmentmighthavebeen published IECpublications search-webstore.iec.ch/advsearchform IEc Products & Services Portal - products.iec.ch The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the varietyof (reference number, text, technical publications previews. With a subscription you will always criteria committee, ...). It also gives information on projects, replaced have access to up to date content tailored to your needs. and withdrawn publications. Electropedia - www.electropedia.org IEc Just Published - webstore.iec.ch/justpublished The world's leading online dictionary on electrotechnology. Stay up to date on all new IEC publications. Just Published containing more than 22 300 terminological entries in English details all new publications released.Available online and and French, with equivalent terms in 19 additional languages. once a month by email. Also known as the International Electrotechnical Vocabulary (IEV) online IECCustomerServiceCentre-webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC61558-2-20 Edition 3.02022-12 REDLINE VERSION INTERNATIONAL STANDARD colour inside GROUP SAFETY PUBLICATION Safety of transformers, reactors, power supply units and combinations thereof - Part 2-2o: Particular requirements and tests for small reactors INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.180 ISBN 978-2-8322-6233-7 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered trademark of the International Electrotechnical Commissior