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1、IEEE Std C37.20.1-2002 (Revision of IEEE Std C37.20.1-1993) IEEE Standards C37.20.1 TM IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear Published by The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA 10 October 2002 IE
2、EE Power Engineering Society Sponsored by the Switchgear Committee IEEE Standards Print: SH95004 PDF: SS95004 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:
3、44:05 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright 1998 IEEE All Rights Reserved1 IEEE Std C37.20.1-2002 (R2007) (Revision of IEEE Std C37.20.1-1993) IEEE Standard for Metal-Enclosed Low- Voltage Power Circuit Breaker Switchgear Sponsor Switchgear Committee of
4、the IEEE Power Engineering Society Reaffirmed 26 September 2007 Approved 13 June 2002 IEEE-SA Standards Board Abstract: Low-voltage metal-enclosed switchgearwhich contains either stationary or drawout, manually or electrically operated low-voltage ac or dc power circuit breakers in individual ground
5、ed metal compartments, in three-pole, two-pole, or single-pole constructionis covered. Rated maximum voltage levels are 254V, 508V, or 635V (ac) and 300/325V, 800V, 1000V, 1200V, 1600V, or 3200V (dc). The preferred continuous current ratings of the main bus in ac designs are 1600A, 2000A, 3000A, 320
6、0A, 4000A, or 5000A. For dc designs, the preferred ratings are 1600A, 2000A, 2500A, 3000A, 4000A, 5000A, 6000A, 8000A, 10000A, or 12000A. The switchgear may also contain associated control, instruments, metering, protective, and regulating devices as necessary. The standard deals with service condit
7、ions, ratings, temperature limitations, and classification of insulating materials, insulation (dielectric) withstand voltage requirements, test procedures, and application. Keywords: circuit breaker, control, cumulative loading, current transformers, drawout, indoor, instrumentation, load current-c
8、arrying, metering, outdoor, protection, stationary The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2002 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 10 October 2002. Printed in the Unit
9、ed States of America. Print: ISBN 0-7381-3303-5SH95004 PDF: ISBN 0-7381-3304-3SS95004 Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:44:05 MDTNo reproduction
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27、 classroom use can also be obtained through the Copyright Clearance Center. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:44:05 MDTNo reproduction or networ
28、king permitted without license from IHS -,-,- Introduction (This Introduction is not a part of IEEE Std C37.20.1-2002, IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear.) This standard has been revised to refl ect needed technical changes that have been suggested since th
29、e last revision to IEEE Std C37.20.1 that was published in 1993. Major editorial and technical changes have been incorporated. The more signifi cant changes include the following: a)Major expansion of text describing the design testing requirements in order to more fully delineate objective test cri
30、teria and performance evaluation guidelines. In most cases, it is felt that the text elaboration captures test requirements that were previously understood by test laboratories and designers, but not adequately delineated in the document. b) Addition of new defi nitions for mechanism-operated contac
31、t (MOC) and truck-operated contact (TOC) switches, previously contained in IEEE Std C37.2-1996, but necessary to a full understanding of metal-enclosed low-voltage power circuit breaker switchgear. c)Expansion of discussion of the requirements for LV dc switchgear, including devices commonly used in
32、 such switchgear, and coordination with on-going changes to related standards, including IEEE Std C37.14TM-1999.a d)Changes to coordinate with other documents in the IEEE Std C37.20.X series of documents, particularly with IEEE Std C37.20.2TM-1999 for metal-clad switchgear. This coordination is main
33、tained on an ongoing basis so as to treat common subjects in an equivalent manner. e)Addition of explanatory text related to short-circuit current ratings in 5.4.4. f)Updating and expansion of requirements for control wiring in 7.1.3. g)Conversion to the International System of Units (SI), the moder
34、nized metric system. It is also noted that the altitude correction factors listed in Table 11 of this standard are under review by an IEEE Switchgear Committee Working Group, PC37.100.1, on Common Requirements for Power Switchgear. The old values are included in this document for reference until the
35、 Working Group releases the new values, at which time the new values will supersede those in the current Table 11. This standard includes only the requirements for metal-enclosed low-voltage power circuit breaker switchgear. These requirements were previously a part of IEEE Std C37.20TM -1969 (Reaff
36、 1981), IEEE Standard for Switchgear Assemblies Including Metal-Enclosed Bus (1974 consolidated edition). Other types of equipment previously included in IEEE Std C37.20-1969 are incorporated in separate publications. The IEEE Switchgear Assemblies Committee was responsible for this revision. This p
37、ublication is one of a series covering switchgear assemblies as follows: 1) IEEE Std C37.20.1-2002, IEEE Standard for Metal-Enclosed Low-Voltage Power Circuit Breaker Switchgear. 2) IEEE Std C37.20.2-1999, IEEE Standard for Metal-Clad Switchgear. 3) IEEE Std C37.20.3TM-2001, IEEE Standard for Metal-
38、Enclosed Interrupter Switchgear. 4) IEEE Std C37.20.7TM-2001, IEEE Guide for Testing Medium-Voltage Metal-Enclosed Switchgear for Internal Arcing Faults. Copyright ? 2002 IEEE. All rights reserved.iii aInformation on references can be found in Clause 2. Copyright The Institute of Electrical and Elec
39、tronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:44:05 MDTNo reproduction or networking permitted without license from IHS -,-,- 5) IEEE Std C37.21TM-1985, IEEE Standard for Control Switchboards. 6) IEEE S
40、td C37.23TM-1987, IEEE Standard for Metal-Enclosed Bus and Calculating Losses in Isolated Phase Bus. Figure A depicts types of switchgear assemblies. ivCopyright ? 2002 IEEE. All rights reserved. Figure ATypes of switchgear assemblies Copyright The Institute of Electrical and Electronics Engineers,
41、Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:44:05 MDTNo reproduction or networking permitted without license from IHS -,-,- Participants The Accredited Standards Committee on Power Switchgear, C37, which reviewed and ap
42、proved this standard, had the following members at the time of approval: T. W. Olsen, Acting Chair A. K. McCabe, Vice-Chair, HV Standards J. C. Scott, Vice-Chair, LV Standards D. L. Swindler, Vice-Chair, IEC Activities N. Ahmad, Co-Secretary J. Collins, Co-Secretary Organization RepresentedName of R
43、epresentative Electric Light other interrupting devices; switches, control, instrumentation, and metering; and protective and regulating equipment. This standard is concerned with enclosed, rather than open, indoor and outdoor switchgear assemblies. It includes types of equipment that are part of se
44、condary unit substations. It does not apply to equipment covered by industrial control standards, communication switchboards, communication switching equipment, switchboards for use on board ships, or dead-front distribution switchboards. In this standard, metal-enclosed low-voltage power circuit br
45、eaker switchgear shall be called LV switchgear. For LV ac switchgear, the voltage shall be 1000V or below; for LV dc switchgear, the voltage shall be 3200V or below. 2. References This standard shall be used in conjunction with the following publications. When the publications referenced in this sta
46、ndard are superseded by an approved revision, the revision shall apply. ANSI C2-2002, National Electrical Safety Code?(NESC?), American National Standards Institute.1,2 ANSI C37.16-2000, Low-Voltage Power Circuit Breakers and AC Power Circuit Protectors: Preferred Ratings, Related Requirements, and
47、Application Recommendations. Copyright ? 2002 IEEE. All rights reserved.1 1ANSI publications are available from the Sales Department, American National Standards Institute, 25 West 43rd Street, 4th Floor, New York, NY 10036, USA (http:/www.ansi.org). 2The NESC is available from the Institute of Elec
48、trical and Electronics Engineers, 445 Hoes Lane, P.O. Box 1331, Piscataway, NJ 08855-1331, USA. (http:/standards.ieee.org). National Electrical Safety Code and NESC are both registered trademarks and service marks of the Institute of Electrical and Electronic Engineers, Inc. Copyright The Institute
49、of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=IHS Employees/1111111001, User=Japan, IHS Not for Resale, 07/30/2008 01:44:05 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C37.50-1989, Low-Voltage AC Power Circuit Breakers Used in Enclo