《IEEE_C37.97-1979_IEEE_Guide_for_Protective_Relay_Applications_to_Power_Buses》.pdf

ANSI/IEEE C37.97-1979 An American National Standard IEEE Guide for Protective Relay Applications to Power System Buses Sponsor Power Systems Relaying Committee of the IEEE Power Engineering Society Secretariat Institute of Electrical and Electronics Engineers, Inc National Electrical Manufacturers Association Approved September 8, 1977 Reaffirmed March 22, 1984 Reaffirmed December 6, 1990 IEEE Standards Board Approved February 15, 1979 Reaffirmed June 30, 1986 Approved April 9, 1990 American National Standards Institute Published by The Institute of Electrical and Electronics Engineers, Inc 345 East 47th Street, New York, NY 10017 American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise. or withdraw this standard no later than five years from the date of publication. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. © Copyright 1979 by The Institute of Electrical and Electronics Engineers, Inc No part of this publication may be reproduced in any form, in an electronic retrieval sys