1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C37.57-2003 (R2010)For SwitchgearMetal-EnclosedInterrupter SwitchgearAssembliesConformance TestingANSI C37.57-2003 (R2010) American National Standard for Switchgear Metal-Enclosed Interrupter Switchgear Assemblies Conformanc
2、e Testing Secretariat: National Electrical Manufacturers Association Approved April 14, 2003 Reaffirmed November 16, 2010 American National Standards Institute, Inc. ANSI C37.57-2003 (R2010) NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus o
3、f persons engaged in the development and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. ANSI standards and guideline publications, of which the document
4、 contained herein is one, are developed through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process to promote fairness in
5、the development of consensus, it does not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal inju
6、ry, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, express or implied, as to th
7、e accuracy or completeness of any information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer or sellers products or
8、services by virtue of this standard or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone
9、using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available
10、from other sources, which the user may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or insta
11、llations for safety or health purposes. Any certification or other statement of compliance with any health or safetyrelated information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement.ANSI C37.57-2003 (R2010) AMERICAN NAT
12、IONAL STANDARD Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, sub
13、stantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution.
14、 The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American
15、 National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Stand
16、ards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard. Caution Notice: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute r
17、equire that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by National Electrical Manufacturers Associat
18、ion 1300 North 17th Street, Rosslyn, VA 22209 Copyright 2003 by National Electrical Manufacturers Association All rights reserved including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and
19、 the International and Pan American Copyright Conventions. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of Americai ANSI C37.57-2003 (R2010) This page int
20、entionally left blank.ii ANSI C37.57-2003 (R2010) Contents Page Foreword vi 1 Scope . 1 1.1 General. 1 1.2 Definitions. 1 1.2.1 Design tests 1 1.2.2 Production tests 2 1.2.3 Conformance tests . 2 2 Referenced standards 2 2.1 Referenced American National Standards. 2 3 General test conditions 3 3.1 A
21、mbient conditions . 3 4 Conformance test requirements. 3 4.1 General.3 4.2 Test requirements. 3 4.3 Test arrangements . 3 4.3.1 Stationary switch arrangement. 3 4.3.2 Drawout switch arrangement 4 4.4 Commonalities of designs and tests. 4 4.5 Dielectric tests 4 4.5.1 General. 4 4.5.2 Power-frequency
22、withstand voltage tests. 5 4.5.3 Lightning-impulse withstand test 6 4.6 Mechanical performance tests . 6 4.6.1 Removable interrupter switch. 6 4.6.2 Stationary interrupter switch. 8 4.6.3 Performance. 8 4.7 Continuous current test 8 4.7.1 Duration of tests . 9 4.7.2 Method of measuring temperatures
23、. 9 4.7.3 Measurement of ambient air temperature 10 4.7.4 Copper conductors for use in continuous current tests 11 4.7.5 Performance. 11 4.8 Short-time withstand current test 11 iii ANSI C37.57-2003 (R2010) 4.8.1 Description of tests. 12 4.8.2 Test circuit conditions. 12 4.8.3 Performance. 12 4.9 Mo
24、mentary withstand current test 13 4.9.1 Description of tests. 13 4.9.2 Test duration. 13 4.9.3 Test circuit conditions. 14 4.9.4 Performance. 14 5 MEI Switchgear Components. 14 5.1 Accessory devices 14 5.2 Bus bar structures 14 5.2.1 Dielectric criteria. 15 5.2.2 Continuous current criteria . 15 5.2
25、.3 Short-time withstand current criteria 15 5.2.4 Momentary withstand current criteria . 15 6 Enclosure conformance tests. 15 6.1 Category A test requirements. 15 6.1.1 Test terms. 15 6.1.2 Test equipment. 15 6.1.3 Tests. 16 6.1.4 Test values . 17 6.2 Category B test requirements. 17 6.3 Category C
26、test requirements 18 7 Treatment of failures 18 8 Production tests 18 8.1 Power-frequency withstand voltage tests. 18 8.2 Mechanical operation tests. 18 8.3 Grounding of instrument transformer cases test 18 8.4 Electrical operation and wiring tests. 19 8.4.1 Control wiring continuity . 19 8.4.2 Cont
27、rol wiring insulation test 19 8.4.3 Polarity verification . 19 8.4.4 Sequence tests. 19 9 Retesting 19 iv ANSI C37.57-2003 (R2010) Tables 1 Copper conductor size for use in continuous current tests 11 2 Test values . 17 Figures 1 Pry test bar . 20 2 Pull hook. 22 3 Face detail for deflection tool .2
28、2 Appendices Appendix A . 23 v ANSI C37.57-2003 (R2010) Foreword (This Foreword is not part of American National Standard C37.57-2003.) This standard has been developed to describe selected tests and procedures to demonstrate conformance in accordance with Section 6 of Tests, of American National St
29、andard for Metal-Enclosed Interrupter Switchgear, ANSI/IEEE C37.20.3-2001. To facilitate its use and to permit timely revisions based on experience, a separate document has been provided. This standard is one of several in a series of test procedures for conformance testing of switchgear products. A
30、lthough this standard is written for general guidance, performance criteria are established so that this standard can be adopted as the basis for certification of indoor ac medium-voltage switches for use in metal-enclosed switchgear for nonutility installations subject to regulation by public autho
31、rities and similar agencies concerned with laws, ordinances, regulations, administrative orders and similar instruments. This standard was prepared by a Working Group sponsored by the Power Switchgear Assemblies Technical Committee of the Switchgear Section of the National Electrical Manufacturers A
32、ssociation (NEMA 8SG-V). During the course of its preparation, coordination has been maintained with the Power Switching Equipment Technical Committee of the Switchgear Section of the National Electrical Manufacturers Association (NEMA 8SG-VI) and the Switchgear Committee of the Power Engineering So
33、ciety of the Institute of Electrical and Electronics Engineers. Through this joint effort over many years, the switchgear assemblies standards have been of extreme value to the industry and further suggestions for improvement gained in the use of this standard will be welcomed. Suggestions for impro
34、vement of this standard will be welcome. They should be sent to the National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1752, Rosslyn, VA 22209. This standard was processed and approved for submittal to ANSI by Accredited Standards Committee on Power Switchgear C37. Committe
35、e approval of the standard does not necessarily imply that all committee members voted for its approval. At the time of its approval, the C37 Committee had the following members: T. W. Olsen, Chair J. Collins, Secretary Organizations Represented: Name of Representative: Electric Light and Power Grou
36、p D. E. Galicia J. L. Koepfinger G. J. Martuscello Y. MusaE. WorlandInstitute of Electrical and Electronics Engineers A. Dixon J. JerabekT. E. Royster M. D. Sigmon J. G. Wood D. Lemmerman (Alt) R. W. Long (Alt) National Electrical Manufacturers Association G. Jones R. W. Long vi ANSI C37.57-2003 (R2
37、010) T. W. Olsen G. J. Sakats D. StoneE. Byron (Alt) International Electrical Testing Association A. Peterson National Electric Contractors Association D. Harwood Testing Laboratory Group A. Harkness P. NotarianTennessee Valley Authority J. Nelson U.S. Dept. of Agriculture T. Roscoe U.S. Dept. Of th
38、e Army, Office of the Chief of Engineers J. A. Gilson U.S. Dept. of the Navy, Naval Construction Battalion Center D. L. Mills Technical Liaison W. Laubach C. WagnerThe following members of the NEMA Power Switchgear Assemblies Technical Committee worked on this standard prior to its publication: G. S
39、akats, Chair J. Collins, Secretary C. Ball P. Dwyer R. W. Long T. W. Olsen S. Slattery J. Wisemanvii ANSI C37.57-2003 (R2010) This page intentionally left blank. viii AMERICAN NATIONAL STANDARD ANSI C37.57-2003 (R2010) For Metal-Enclosed Interrupter Switchgear Assemblies Conformance Testing 1 Scope
40、This standard is a conformance testing standard optionally applicable to all metal-enclosed interrupter switchgear assemblies designed, tested, and manufactured in accordance with ANSI/IEEE C37.20.3. The requirement of ANSI/IEEE C37.20.3 is sufficient for application of metal-enclosed interrupter sw
41、itchgear assemblies, and conformance testing is not necessary to satisfy the basic requirements of that standard. Conformance testing is performed to show compliance with the basic requirements when required to satisfy special agreements or regulatory agency requirements. Conformance testing may be
42、performed associated with the basic design testing if agreeable to those concerned; however, conformance testing is more likely to be performed some time after original development to satisfy a special need. Conformance testing need not be performed if not required. Metal-enclosed interrupter (MEI)
43、switchgear may include control and instrumentation components unique for the application, which are not individually evaluated under this standard. NOTEIn this standard, the use of the term “MEI switchgear“ shall be considered to mean “metal-enclosed interrupter switchgear.“ This standard does not c
44、over equipment intended for use in installations under the exclusive control of electric utilities for the purpose of communication or metering, or for the generation, control, transformation, transmission, and distribution of electric energy located in buildings used exclusively by utilities for su
45、ch purposes or located outdoors on property owned or leased by the utility or on public highways, streets, or roads, or outdoors by established rights on private property. NOTEAn electric utility is an entity that is overseen by a public utility commission, a public service commission, or other regu
46、latory agency having jurisdiction for such installations. 1.1 General This standard specifies the tests that shall be required to demonstrate that the MEI switchgear being tested conforms with the ratings assigned to it and meets the electrical and mechanical performance requirements specified in AN
47、SI/IEEE C37.20.3. 1.2 Definitions 1.2.1 Design tests Design tests are tests made by the manufacturer to determine the adequacy of the design of a particular type, style, or model of equipment or its component parts to meet its assigned ratings and to operate satisfactorily under normal service condi
48、tions or under special conditions if specified. Design tests may be used to demonstrate compliance with applicable standards of the industry. 1 ANSI C37.57-2003 (R2010) NOTES (1) Design tests are made on representative apparatus or prototypes to verify the validity of design analysis and calculation
49、 methods and to substantiate the ratings assigned to all other apparatus of basically the same design. These tests are not intended to be made on every design or to be used as part of normal production. The applicable portion of these design tests may also be used to evaluate modifications of a previous design and to assure that performance has not been adversely affected. These data from previous similar designs may also be used for current designs, where appropriate. Once made, the tests need not be repeated unless the design is changed so as
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