ANSI NEMA C37.55-2002 Switchgear Medium-Voltage Metal-Clad Assemblies Conformance Test Procedures.pdf

1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C37.55-2002 (R2010)SwitchgearMedium-VoltageMetal-CladAssembliesConformance TestProceduresANSI C37.55-2002 (R2010) American National Standard for Switchgear Medium-Voltage Metal-Clad Assemblies Conformance Test Procedures Sec

2、retariat: National Electrical Manufacturers Association Approved March 21, 2003 Reaffirmed November 16, 2010 American National Standards Institute, Inc. ANSI C37.55-2002 (R2010) NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons eng

3、aged 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 contained he

4、rein 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 the developme

5、nt 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 injury, property,

6、 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 the accuracy or

7、 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 services by v

8、irtue 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 using this do

9、cument 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 from other so

10、urces, 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 installations for

11、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 C37.55-2002 (R2010) AMERICAN NATIONAL STANDAR

12、D 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, substantial agre

13、ement 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. The use of A

14、merican 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 National Sta

15、ndards 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 Standards Institut

16、e. 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 require that a

17、ction 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 Association 1300 Nort

18、h 17th Street, Rosslyn, VA 22209 Copyright 2002 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 the Internat

19、ional 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 C37.55-2002 (R2010) This page intentionally le

20、ft blank.ii ANSI C37.55-2002 (R2010) Contents Page Foreword vi 1 Overview. 1 1.1 Scope 1 1.2 Control and instrumentation componentsprotection requirements. 1 1.3 Installations not covered. 1 1.4 Purpose 1 2 Referenced and related standards. 2 2.1 Referenced standards 2 2.2 Related standards 2 3 Defi

21、nitions. 3 3.1 Design tests (type tests). 3 3.2 Production tests (routine tests). 4 3.3 Conformance tests . 4 4 General test conditions 4 4.1 Ambient conditions . 4 4.2 Protection requirements . 4 4.2.1 General. 4 4.2.2 Control power transformers. 4 4.2.3 Voltage transformers . 4 5 Conformance test

22、requirements. 5 5.1 General. 5 5.2 Test requirements. 5 5.3 Test arrangements . 5 5.4 Commonalities of designs and tests. 6 5.5 Dielectric tests 8 5.5.1 General. 8 5.5.2 Power-frequency withstand voltage tests. 9 5.5.3 Lightning impulse withstand tests. 10 5.6 Mechanical performance tests . 11 5.6.1

23、 Removable circuit breaker 11 5.6.2 Drawout control power transformer or drawout fuses 12 5.6.3 Drawout voltage transformer 12 5.6.4 Performance. 13 iii ANSI C37.55-2002 (R2010) Page 5.7 Continuous current test 13 5.7.1 Temperature. 13 5.7.2 Temperature measuring devices 13 5.7.3 Measurement of ambi

24、ent air temperature 15 5.7.4 Conductors for use in continuous current tests 16 5.7.5 Performance. 16 5.8 Short-time withstand current test 16 5.8.1 Description of tests. 17 5.8.2 Test-circuit conditions. 17 5.8.3 Performance. 18 5.9 Momentary withstand current test 18 5.9.1 Description of tests. 18

25、5.9.2 Test duration. 19 5.9.3 Test-circuit conditions. 19 5.9.4 Performance. 19 6 MC switchgear components. 20 6.1 Accessory devices 20 6.1.1 General accessory devices 20 6.1.2 Housing-mounted accessory devices 20 6.1.3 Mechanical accessory devices. 20 6.2 Extension of conformance test results to ot

26、her arrangements. 20 6.2.1 Dielectric criteria. 20 6.2.2 Continuous current criteria . 20 6.2.3 Short-circuit-current-carrying criteria 20 6.2.4 Momentary current withstand criteria . 20 6.3 Isolating switches .21 6.4 Drawout interrupter switches 21 7 Enclosure conformance tests. 21 7.1 Category A t

27、est requirements. 21 7.1.1 Test terms. 21 7.1.2 Test equipment 21 7.1.3 Tests. 22 7.1.4 Test values . 23 iv ANSI C37.55-2002 (R2010) Page 7.2 Category B test requirements. 23 7.3 Category C test requirements 23 8 Treatment of failures 27 9 Production tests 27 9.1 Power-frequency withstand voltage te

28、sts. 27 9.2 Mechanical operation tests. 27 9.3 Grounding of instrument transformer cases test 27 9.4 Electrical operation and wiring tests. 28 9.4.1 Control wiring continuity . 28 9.4.2 Control wiring insulation test 28 9.4.3 Polarity verification . 28 9.4.4 Sequence tests. 28 10 Retesting 28 Tables

29、 1 Representative test arrangements. 7 2 Typical examples of choosing representative test arrangements 8 3 Copper conductors for connection to the main bus for use in continuous current tests. 15 4 Copper conductors for connection to feeder-circuit breaker outgoing terminals or extensions for use in

30、 continuous current tests. 16 5 Test values . 22 Figures 1 Pry test bar . 24 2 Pull Hook 26 3 Face detail for deflection tool .26 Appendix A .29 v ANSI C37.55-2002 (R2010) Foreword (This Foreword is not part of American National Standard C37.55-2002.) This standard has been developed to describe sel

31、ected tests and procedures to demonstrate conformance in accordance with Section 6, Tests, of ANSI/IEEE C37.20.2, Metal-Clad Switchgear. It is published separately from ANSI/IEEE C37.20.2 to facilitate its use and to permit timely revisions based on experience. Major revisions have been made to this

32、 edition to coordinate with revisions made to ANSI C37.04, C37.06, C37.09, and C37.20.2. The voltage range factor (K), historically 1 for older circuit breaker designs, has been changed to 1.0, effectively eliminating it from consideration. Table 1 has been revised accordingly. Previous editions of

33、this standard shall continue to apply for conformance tests made on equipment rated in accordance with the earlier editions of C37.04, C37.06, and C37.09. This standard is one of several in a series of test procedures for conformance testing of switchgear products. While this standard is written for

34、 general guidance, performance criteria are established so that this standard can be adopted as the basis for certification of metal-clad switchgear for use in non-utility installations subject to regulation by public authorities and similar agencies concerned with laws, ordinances, regulations, adm

35、inistrative orders, and similar instruments. This standard has been prepared by a Working Group sponsored by the Power Switchgear Assemblies Technical Committee of the Switchgear Section of the National Electrical Manufacturers Association (NEMA 8-SG-V). During the course of its preparation coordina

36、tion has been maintained with the High Voltage Power Circuit Breaker Technical Committee of the Switchgear Section of the National Electrical Manufacturers Association (NEMA 8-SG-IV). Reports of progress were also made at regular intervals to the Switchgear Committee of the Power Engineering Society

37、 of the Institute of Electrical and Electronics Engineers. Proposed or recommended revisions should be submitted to: Vice President, Technical Services National Electrical Manufacturers Association 1300 North 17th Street, Suite 1752 Rosslyn, VA 22209 This standard was processed and approved for subm

38、ittal to ANSI by Accredited Standards Committee on Power Switchgear C37. Committee 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. Olsen, Chair J. Collins, Secretary Or

39、ganization Represented: Name of Representative: Electric Light and Power Group D.E. Galicia J. L. Koepfinger G. J. Martuscelo Y. Musa E. Worland Institute of Electrical and Electronics Engineers A. Dixon J. Jerabek T. E. Royster M. D. Sigmon J. G. Wood vi ANSI C37.55-2002 (R2010) D. Lemerman (Alt) R

40、. W. Long (Alt) National Electrical Manufacturers Association G. Jones R. W. Long T. W. Olsen G. J. Sakats D. Stone D. Swindler E. Byron (Alt) International Electrical Testing Association A. Peterson National Electrical Contractors Association D. Harwood Testing Laboratory Group A. Harkness P. Notar

41、ian Tennessee Valley Authority D. Reynolds U.S. Dept. of Agriculture H. L. Bowles U.S. Dept. of the 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. Wagner The following members of the NEMA Pow

42、er Switchgear Assemblies Technical Committee worked on this standard prior to its publication: T. W. Olsen, Chair C. Ball P. Dwyer H. Hirz W. Long T. Olsen G. Sakats S. Slattery J. Wiseman vii ANSI C37.55-2002 (R2010) This page intentionally left blank. viii AMERICAN NATIONAL STANDARD for Switchgear

43、 ANSI C37.55-2002 (R2010) Medium-Voltage Metal-Clad Assemblies Conformance Test Procedures 1 Overview 1.1 Scope This Standard is a conformance testing standard optionally applicable to all medium voltage metal-clad switchgear assemblies designed, tested, and manufactured in accordance with ANSI/IEEE

44、 C37.20.2, Metal-Clad Switchgear. This standard covers selected tests to demonstrate conformance with Section 6, Tests, of ANSI/IEEE C37.20.2. The requirements of ANSI/IEEE C37.20.2 are sufficient for application of medium voltage metal-clad switchgear assemblies, and conformance testing is not nece

45、ssary to satisfy the basic requirements of ANSI/IEEE C37.20.2. Conformance testing is performed to show compliance with the basic requirements when it is required to satisfy special agreements or regulatory agency requirements. Conformance testing may be performed in association with the basic desig

46、n testing if such testing is agreeable to those concerned; however, conformance testing is more likely to be performed some time after original development to satisfy a specific need. Conformance testing need not be performed if not required. 1.2 Control and instrumentation componentsprotection requ

47、irements MC (metal-clad) switchgear assemblies usually include control and instrumentation components unique for the application that are not individually evaluated under this standard. However, these components, when utilized in circuits that obtain their energy from primary sources within the MC s

48、witchgear, must be suitably protected in accordance with 4.2. NOTEIn this standard, the use of the term “MC switchgear“ shall be considered to mean “metal-clad switchgear.“ The use of the term “circuit breaker“ shall be considered to mean “indoor alternating current medium voltage circuit breakers (

49、rated above 1000 volts) applied as removable elements in metal-enclosed switchgear assemblies,“ unless qualified by other descriptive terms. 1.3 Installations not covered This standard does not cover equipment intended for use in installations under the exclusive control of electric utilities for the purposes of communication or metering, or for generation, control, transformation, transmission, and distribution of electric energy located in buildings used exclusively by utilities for such purposes, or located outdo