IEC_61000-3-3-2021.pdf

IEC 61000-3-3 Edition 3.2 2021-03 CONSOLIDATED VERSION INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 3-3:Limits Limitation of voltage changes,voltage fluctuations and flicker in public low-voltage supply systems,for equipment with rated current 16 A per phase and not subject to conditional connection IEC 61000-3-3:2013-05+AMD1:2017-05+AMD2:2021-03 CSV(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2021 IEC,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 IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb infoiec.ch 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 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 or an amendment might have been published.IEC publications search-webstore.iec.ch/advsearchform The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and once a month by email.IEC Customer Service Centre-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:salesiec.ch.IEC online collection-oc.iec.ch Discover our powerful search engine and read freely all the publications previews.With a subscription you will always have access to up to date content tailored to your needs.Electropedia-www.electropedia.org The worlds leading online dictionary on electrotechnology,containing more than 22 000 terminological entries in English and French,with equivalent terms in 18 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.INTERNATIONAL STANDARD Electromagnetic compatibility(EMC)Part 3-3:Limits Limitation of voltage changes,voltage fluctuations and flicker in public low-voltage supply systems,for equipment with rated current 16 A per phase and not subject to conditional connection INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.100.10 ISBN 978-2-8322-9622-6 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.IEC 61000-3-3 Edition 3.2 2021-03 CONSOLIDATED VERSION colourinside IEC 61000-3-3 Edition 3.2 2021-03 CONSOLIDATED VERSION REDLINE VERSION Electromagnetic compatibility(EMC)Part 3-3:Limits Limitation of voltage changes,voltage fluctuations and flicker in public low-voltage supply systems,for equipment with rated current 16 A per phase and not subject to conditional connection IEC 61000-3-3:2013-05+AMD1:2017-05+AMD2:2021-03 CSV(en)colourinside 2 IEC 61000-3-3:2013+AMD1:2017 +AMD2:2021 CSV IEC 2021 CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references.7 3 Terms and definitions.8 4 Assessment of voltage changes,voltage fluctuations and flicker.10 4.1 Assessment of a relative voltage change,d(t).10 4.2 Assessment of the short-term flicker value,Pst.11 4.2.1 General.11 4.2.2 Flickermeter.11 4.2.3 Simulation method.11 4.2.4 Analytical method.11 4.2.5 Use of Pst=1 curve.12 4.3 Assessment of long-term flicker value,Plt.12 5 Limits.12 6 Test conditions.13 6.1 General.13 6.2 Measurement uncertainty.14 6.3 Test supply voltage.14 6.4 Reference impedance.14 6.5 Observation period.15 6.6 General test conditions.15 Annex A(normative)Application of limits and type test conditions for specific equipment.19 Annex B(normative)Test conditions and procedures for measuring dmax voltage changes caused by manual switching.29 Annex C(informative)Determination of steady state voltage and voltage change characteristics,as defined in IEC 61000-4-15:2010.30 Annex D(informative)Input relative voltage fluctuation V/V for Pst=1,0 at output IEC/TR 61000-3-7:2008.35 Bibliography.36 Figure 1 Reference network for single-phase and three-phase supplies derived from a three-phase,four-wire supply.16 Figure 2 Curve for Pst=1 for rectangular equidistant voltage changes.17 Figure 3 Shape factors F for double-step and ramp-voltage characteristics.17 Figure 4 Shape