IEEE-C37.36B-1990.pdf
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1、Recognized as an American National Standard (ANSI)IEEE C37.36b-1990 IEEE Guide to Current Interruption with Horn-Gap Air Switches Sponsor Switchgear Committee of the IEEE Power Engineering Society Secretariat Institute of Electrical and Electronics Engineers, Inc. National Electrical Manufacturers A
2、ssociation Approved February 15, 1990 IEEE Standards Board Approved July 19, 1990 American National Standards Institute Abstract: IEEE C37.36b-1990, IEEE Guide to Current Interruption with Horn-Gap Air Switches, is intended to aid air switch users in establishing suggested maximum values of excitati
3、on, resistive and capacitive currents that may be successfully interrupted while using outdoor air switches. This guide pertains to air switches mounted in the normal horizontal-upright position and not equipped with interrupting aids. Keywords: air switch, capacitive current, current interruption,
4、excitation current, horn-gap air switches, resistive current ISBN 1-55937-037-8 Copyright 1990 by The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA No part of this publication may be reproduced in any form, in an electronic retrieval syste
5、m or otherwise, without the prior written permission of the publisher. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:27:29 MDTNo reproduction or netwo
6、rking permitted without license from IHS -,-,- ii IEEE Standards documents are developed within the Technical Committees of the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Board. Members of the committees serve voluntarily and without compensation. They are not nec
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15、lve patents on articles, materials, or processes. Such adoption does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the standards documents. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under licen
16、se with IEEELicensee=IHS Employees/1111111001, User=OConnor, Maurice Not for Resale, 04/28/2007 23:27:29 MDTNo reproduction or networking permitted without license from IHS -,-,- iii Foreword (This Foreword is not a part of IEEE C37.36b-1990, IEEE Guide to Current Interruption with Horn-Gap Air Swit
17、ches.) This guide is intended to aid air switch users in establishing suggested maximum values of excitation, resistive and capacitive currents that may be successfully interrupted while using outdoor air switches. This guide pertains to air switches mounted in the normal horizontal-upright position
18、 and not equipped with interrupting aids. The subject of current interruption using an air switch is so common to the industry that everyone appears to have an opinion concerning this matter. Some opinions hold that an air switch should never be used to interrupt any current except the capacitive cu
19、rrent from insulators on the shortest length of bus or miscellaneous equipment. Others can document good experiences in interrupting excitation or capacitive currents two to ten times the maximum suggested levels in this guide. Both ends of this spectrum and the variations in the middle have merit b
20、ased on individual experiences. However, this guide must achieve a consensus position among switch manufacturers, engineering consultants, governmental bodies, users, and many other interested parties in order to exist. Subsequently, the suggestions in this guide have been forged upon the consensus
21、that the current interruption levels are at least as high as the values specified herewithin. No criticism is directed toward any organization for exceeding the suggestions of this guide. Finally, this guide will continue to require feedback in the future to develop suggestions that accurately addre
22、ss the needs of industry. Table 1 of this guide provides the user with a quick procedure to establish the capability of a switch for current interruption when the switch is near grounded equipment. The user should note that this procedure should only be utilized after the user has thoroughly reviewe
23、d this guide and is confident of proper application. In a similar manner, Table 2 of this guide provides the user with a quick procedure to establish the capability of a switch for current interruption when the switch is not near grounded equipment. The user is required to calculate his or her own c
24、urrent interruption values for applications that differ from the assumptions of Tables 1 and 2. Refer to the Appendixes for calculation methods and sample calculations. The Accredited Standards Committee on Power Switchgear, C37, had the following members at the time this document was approved as an
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