ANSI NEMA C37.51-2003 For Switchgear - Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies-Conformance Test Procedures (Incorporates Errata February 2011).pdf
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1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C37.51-2003 (R2010)For Switchgear Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies Conformance Test ProceduresANSI C37.51-2003 (R2010) American National Standard for Switchgear Metal-Enclosed Low-Vol
2、tage AC Power Circuit Breaker Switchgear Assemblies Conformance Test Procedures Secretariat: National Electrical Manufacturers Association Approved October 31, 2003 Reaffirmed November 17, 2010 Contains February 2011 Errata American National Standards Institute, Inc. ANSI C37.51-2003 (R2010) NOTICE
3、AND DISCLAIMER The information in this publication was considered technically sound by the consensus of 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
4、 in the development of this document. ANSI standards and guideline publications, of which the document 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 interes
5、t in the topic covered by this publication. While NEMA administers the process to promote fairness in 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
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9、ity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone 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 cir
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11、ith the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations 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 sole
12、ly the responsibility of the certifier or maker of the statement.ANSI C37.51-2003 (R2010) AMERICAN NATIONAL 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 standard
13、s developer. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial 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 tha
14、t all views and objections be considered, and that a concerted effort be made toward their resolution. 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,
15、 purchasing, or using products, processes, or procedures not conforming to the standards. The American 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
16、to issue an interpretation of an American National Standard in the name of the American National Standards 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
17、may be revised or withdrawn at any time. The procedures of the American National Standards Institute require 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 writ
18、ing the American National Standards Institute. Published by National Electrical Manufacturers Association 1300 North 17th Street, Rosslyn, VA 22209 Copyright 2011 by National Electrical Manufacturers Association All rights reserved including translation into other languages, reserved under the Unive
19、rsal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and 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 permis
20、sion of the publisher. Printed in the United States of Americai ANSI C37.51-2003 (R2010) This page intentionally left blank. ii ANSI C37.51-2003 (R2010) CONTENTS Foreword . v Section 1 SCOPE.1 1.1 Control and instrumentation componentsprotection requirements.1 1.2 Installations not covered.1 1.3 Pur
21、pose 1 Section 2 REFERENCED STANDARDS 2 Section 3 DEFINITIONS 3 3.1 Conformance tests .3 3.2 Design tests (type tests).3 3.3 Production tests (routine tests).3 Section 4 GENERAL TEST CONDITIONS .4 4.1 Ambient conditions .4 4.2 Protection requirements .4 4.2.1 General4 4.2.2 Control power transformer
22、s.4 4.2.3 Voltage transformers.5 Section 5 CONFORMANCE TEST REQUIREMENTS6 5.1 General.6 5.2 Test requirements.6 5.3 Test arrangements .6 5.3.1 Arrangement to be used6 5.3.2 Specifics of test arrangement7 5.3.3 Representation 7 5.4 Dielectric tests 7 5.5 Continuous current test 8 5.5.1 Duration of Te
23、sts .8 5.5.2 Measurement of Ambient Air Temperature.9 5.5.3 Method of Measuring Temperature.9 5.5.4 Copper Conductors for Use in Continuous Current Tests 9 5.5.5 Performance11 5.6 Short-time withstand current tests11 5.6.1 General11 5.6.2 Primary phase bus and connections.11 5.6.3 Neutral bus and co
24、nnections (if design includes a neutral bus) .13 5.6.4 Ground bus and connections 14 5.7 Short-circuit withstand current tests .14 5.7.1 General14 5.7.2 Primary phase bus and connections.15 5.7.3 Neutral bus (if applicable), ground bus, and connections.16 5.8 Mechanical performance testsremovable ci
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