IEC_TR_61869-103-2012.pdf

IEC/TR 61869-103 Edition 1.0 2012-05 TECHNICAL REPORT Instrument transformers The use of instrument transformers for power quality measurement IEC/TR 61869-103:2012(E)colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 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 Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch 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 corrigenda or an amendment might have been published.Useful links:IEC publications search-www.iec.ch/searchpub The advanced search enables you 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by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications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 on-line and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary(IEV)on-line.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:csciec.ch.Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.IEC/TR 61869-103 Edition 1.0 2012-05 TECHNICAL REPORT Instrument transformers The use of instrument transformers for power quality measurement INTERNATIONAL ELECTROTECHNICAL COMMISSION XC ICS 17.220.20 PRICE CODE ISBN 978-2-88912-073-4 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinsideCopyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permitted.Uncontrolled when printed.2 TR 61869-103 IEC:2012(E)CONTENTS FOREWORD.6 1 Scope.8 2 Normative references.8 3 Terms and definitions.9 4 Nature of the problem.12 5 Power quality parameters according to IEC 61000-4-30:2008.13 General.13 5.1 Power quality measurement chain.13 5.2 Signal processing according to IEC 61000-4-30:2008.14 5.3 Power frequency.15 5.4 Magnitude of the supply voltage.15 5.5 Flicker.15 5.6 Supply voltage dips and swells.17 5.7 Voltage interruptions.18 5.8 Transient voltages.19 5.9 Supply voltage unbalance.19 5.10 Voltage harmonics.20 5.11 Voltage inter-harmonics.21 5.12 Mains Signalling Voltages on the supply voltage.21 5.13 Rapid voltage changes.21 5.14 Measurement of underdeviation and overdeviation parameters.21 5.15 Summary of the requirements placed by the measure of power quality 5.16parameters.21 6 Impact of instrument transformers on PQ measurement.22 General.22 6.1 Inductive instrument transformers.24 6.2 Inductive voltage transformers.25 6.2.1 Inductive CTs.30 6.2.2 Capacitive voltage transformers(CVTs).35 6.3 Standard application.35 6.3.1 Special measurement techniques.39 6.3.2 Electronic instrument transformers.42 6.4 General.42 6.4.1 Common accuracy classes.42 6.4.2 Electronic VTs.43 6.4.3 Electronic CTs.55 6.4.47 Tests for power quality.67 Test procedure for VT frequency response.68 7.1 Test set-up for VT frequency response test.68 7.2 Test procedure for CT frequency response.70 7.3 Test set-up for CT frequency response test.70 7.4 Special considerations for test of electronic instrument transformers with 7.5digital output.72 Tests for electronic instrument transformers according to IEC Standard 7.660044-8.72 Test arrangement and test circuit.73 7.6.1Copyrighted material licensed to BR Demo by Thomso