IEC IEC/EEE60255-118-1 Edition 1.0 2018-12 INTERNATIONAL STANDARD colour inside Measuring relays and protection equipment- Part 118-1: Synchrophasor for power systems - Measurements IEC/IEEE60255-118-1:2018-12(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright@2018 IEC,Geneva,Switzerland Copyright@2018IEEE 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 being secured. Requests for permission to reproduce should be addressed to either IEC at the address below or IEc's member National Committee in the country of the requester orfrom IEEE. IEC CentralOffice Institute of Electrical and Electronics Engineers, Inc. 3, rue de Varembe 3 Park Avenue CH-1211 Geneva 20 NewYork,NY 10016-5997 Switzerland United States of America Tel.: +41 22 919 02 11 [email protected] [email protected] www.ieee.org 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. Aboutthe IEEE IEEE is the world's largest professional association dedicated to advancing technological innovation and excellence for the benefit of humanity. IEEE and its members inspire a global community through its highly cited publications, conferences, technology standards, and professional and educational activities. AboutIEC/IEEEpublications The technical content of IEC/IEEE publications is kept under constant review by the IEC and IEEE. Please make sure that you have the latest edition, a corrigendum or an amendment might have been published. IEc Catalogue -webstore.iec.ch/catalogue Electropedia-www.electropedia.org stand-alone application for consulting theentire The world's leading online dictionary of electronic and electrical bibliographical information on IEC International Standards, terms containing 21 000 terms and definitions in English and Technical Specifications, Technical Reports andother French, with equivalent terms in 16 additional languages. Also documents. Available for PC, Mac OS, Android Tablets and known as the international Electrotechnical Vocabulary (IEV) iPad. online. IEC publications search -webstore.iec.ch/advsearchform IEC Glossary - std.iec.ch/glossary The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English_and varietyof criteria(reference number,text, technical French extracted from the Terms and Definitions clause of IEC committee...). It also gives information on projects, replaced publications issued since 2002.Some entries have been and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and CISPR. IEc Just Published -webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre-webstore.iec.ch/csc details all new publications released. Available online and also If you wish to give us your feedback on this publication or need once a month by email. further assistance, please contact the Customer Service Centre: [email protected]. IEC IEEE IEC/IEEE60255-118-1 Edition1.02018-12 INTERNATIONAL STANDARD colour inside Measuringrelaysandprotectionequipment- Part 118-1: Synchrophasor for power systems -Measurements INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 29.120.70 ISBN 978-2-8322-6172-9 Warning! Make sure that you obtained this publication from an authorized distributor.