IEEE IEEESTANDARDSASSOCIATION IEEE Guide for Field Testing of Relaying Current Transformers IEEE Power and Energy Society Sponsored by the Power System Relaying and Control Committee IEEE IEEE Std C57.13.1TM-2017 3 Park Avenue (Revision of IEEE Std C57.13.1-2006) New York, NY 10016-5997 USA IEEE Std C57.13.1TM-2017 (Revision of IEEE Std C57.13.1-2006) IEEE Guide for Field Testing of Relaying Current Transformers Sponsor Power System Relaying and Control Committee of the IEEE Power and Energy Society Approved 6 December 2017 IEEE-SA Standards Board Abstract: Field test methods described in this guide assure that current transformers are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after having been in service for a period of time. Keywords: current transformers, excitation, field testing, IEEE C57.13.1 TM, insulation, polarity ratio, relaying The Institute of Electrical and Electronics Engineers, Inc. 3ParkAvenue,NewYork,NY10016-5997,USA Copyright @ 2018 by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 31 October 2018. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent & Trademark Office, owned by the Institute of Electrical and Electronics Engineers, Incorporated. National Electrical Safety Code and NESC are registered trademarks and service marks of the Institute of Electrical and Electronics Engineers, Incorporated. STD22940 PDF: ISBN 978-1-5044-4591-7 Print: ISBN 978-1-5044-4592-4 STDPD22940 IEEEprohibitsdiscrimination,harassment,andbullying For more information, visit http://www.ieee.org/web/aboutus/whatis/policies/p9-26.html. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior writen permission of the publisher. Important Notices and Disclaimers Concerning IEEE Standards Documents IEEE documents are made available for use subject to important notices and legal disclaimers. These notices and disclaimers, or a reference to this page, appear in all standards and may be found under the heading "Important Notices and Disclaimers Concerning IEEE Standards Documents." They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html. Notice and Disclaimer of Liability Concerning the Use of IEEE Standards Documents IEEE Standards documents (standards, recommended practices, and guides), both full-use and trial-use, are developed within IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA") Standards Board. IEEE ("the Institute") develops its standards through a consensus development process, approved by the American National Standards Institute ("ANSI"), which brings together volunteers representing varied viewpoints and interests to achieve the final product. IEEE Standards are documents developed through scientific, academic, and industry-based technical working groups. Volunteers in IEEE working groups are not necessarily members of the Institute and participate without compensation from IEEE. While IEEE administers the process and establishes rules to promote fairness in the consensus development process, IEEE does not independently evaluate, test, or verify the accuracy of any of the information or the soundness of any judgments contained in its standards. IEEE Standards do not guarantee or ensure safety, security, health, or environmental protection, or ensure against interference with or from other devices or networks. Implementers and users of IEEE Standards documents are responsible for determining and complying with all appropriate safety, security, environmental, health, and interference protection practices and all applicable laws and regulations. IEEE does not warrant or represent the accuracy or content of the material contained in its standards, and expressly disclaims all warranties (express, implied