1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.24-2001Electric lamps: Two-inch(51mm) Integral-reflectorLamps with Front Coversand GU5.3 or GX 5.3BasesANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association
2、 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 American National Standard Approved: October 10, 2001 Secretariat: ANSLGNational Electrical Manufacturers Association for electric lamps: Two-inch (51mm) Integral-reflector Lamps with Front Covers and GU5.3 or GX 5.3 Bases Secretariat C78: Ameri
3、can National Standards Lighting Group National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 Approved October 10, 2001 American National Standards Institute ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufa
4、cturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 AmericanNational 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. An A
5、merican National Standard implies a consensus of those substantially concerned with its scope and provisions. 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 agreem
6、ent 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 American National Standards is completely voluntary; their existence does not in any resp
7、ect 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 Standards Institute does not develop standards and will in no circumstances give an interpr
8、etation 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 Institute. Requests for interpretations should be addressed to the Committee Secretariat whose n
9、ame 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 action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of
10、 American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by Information Handling Services/Global Engineering Documents 15 Inverness Way East, Englewood, CO 80112-5776 Under Contract with the National Elec
11、trical Manufacturers Association No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG
12、 - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 i TABLE OF CONTENTS Foreword . ii 1.0 Scope . 1 2.0 Normative References 1 3.0 Lamp Designations. 1 Annex A : Outline Drawing (Normative). 5 Annex B: Bibliography (Informative) . 9 ANSI C78.24-2001
13、 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 iiForeword (This Foreword is not part of ANSI C78.24-2001.) Suggestions for improvement of this standard should be submitted to the Secretariat
14、C78, National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209. This standard was processed and approved by Accredited Standards Committee on Electric Lamps, C78, and its Sub-Committee, C78-1 for Incandescent Lamps. Committee approval of the standard does n
15、ot necessarily imply that all committee members voted for that approval. At the time this standard was published, the C78 Committee had the following members: Al Rousseau, Chair, C78 & Technical Coordinator Randolph N. Roy, Secretariat Cynthia E. Minshall, Consulting Editor Organization Represented:
16、 Name of Representative: Advance Transformer Company Norman Grimshaw Edison Electric Institute William Maguire (Delegate) GE Lighting Cynthia E. Minshall Illuminating Engineering Society Rita M. Harrold Intertek Testing Services, Inc. Craig Davenport MagneTek Michael A. Stein National Electrical Man
17、ufacturers Association (vacant) (Delegate) OSRAM SYLVANIA INC. Peter Bleasby Philips Lighting Company Al Rousseau Underwriters Laboratories, Inc. David Belt At the time it approved this standard, the C78-1 Sub-Committee had the following members: Bernard Rachel, Chair C78-1 Organization Represented:
18、 Name of Representative: GE Lighting Bernard Rachel OSRAM SYLVANIA INC. David Mullen James Oetken (Alt.) Philips Lighting Company Al Rousseau Duane Will (Alt.) Alejandro Seyffert (Alt.) Underwriters Laboratories, Inc. David Belt ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG -
19、 National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 1 American National Standard ANSI C78.24-2001 for electric lamps Two-inch (51mm) Integral-reflector Lamps with Front Covers and GU5.3 or GX5.3 Bases 1 Scope This standard specifies the detailed lamp
20、dimensions for those lamps in the family of two-inch (51-mm) integral-reflector lamps with GU5.3 or GX5.3 bases and front covers. These lamps are intended for use in general lighting applications. 2. Normative References The following standards contain provisions which, through reference in this tex
21、t, constitute provisions of this American National Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most rec
22、ent editions of the standards indicated below. ANSI C78.1413-1989 (R94), American National Standard for Electric Lamps - Two -Inch (51mm) Integral-Reflector - Rim Reference Projection Lamps - Dimensions of Centering Systems ANSI C81.61-1990 (R96), American National Standard for Electric Lamp Bases.
23、ANSI C81.62-1991 (R96), American National Standard for Electric Lamp Holders. ANSI C81.63-1991 (R96), American National Standard for Electric Lamp Bases and Lampholder Gauges. 3. Lamp Designations Lamp dimensions are specified in Figure 1. Only those dimensions essential to interchangeability are gi
24、ven. The drawn shape of the reflector and neck area are not ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 2intended to specify or restrict the outer surface of the lamp beyon
25、d the restrictions imposed by the standard for the base, ANSI C81.61. Dimensions of the subject lamps with front covers differ from those similar lamps without front covers that are specified in ANSI C78.1413. For the intended application of the subject lamps, there is no need for a highly precise r
26、im. Lamps of the subject type shall employ standardized bases GU5.3 or GX5.3. For details see ANSI C81.61. Compliance shall be checked by the relevant gauges of ANSI C81.63. ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 Nor
27、th 17th Street, Suite 1847, Rosslyn, VA 22209 3 Figure 1 - Lamp dimensions (Note 1) Standard Dimensions (inches) Nearest Metric Equivalent (millimeters) Reference Min Nom Max Min Nom Max A (Notes 2,3) - - 1.966 - - 50.7 A1 (Note 4) - 1.89 - - 48.0 - A2 - - 1.89 - - 48.0 B 0.012 - - 0.3 - - E - - 0.1
28、77 - - 4.5 M - - 1.811 - - 46.0 N (Note 5) 1.410 - 1.512 35.8 - 38.4 V (Note 6) 0.070 - 0.094 1.8 - 2.4 - - 17 - - 17 Notes 1 Lamp dimensions are the same as shown in 60357-IEC 1012. 2 Allowable maximum diameter including mold flash out-of-roundness. 3 Dimensions A, A1 and A2 are diameters. 4 Dimens
29、ion A1 indicates the inner diameter of the surface y which has a minimum width of B and can be inclined up to an angle of . 5 The undefined areas bounded by dimension N may vary from the contour shown to accommodate variations in reflector design. 6 Dimension V is measured at diameter A1. 7 Surface
30、x can be used to position the lamp and when so used should mate firmly with any rim-centering device to obtain proper optical alignment and for GX5.3 based lamps to obtain the essential lamp retention function. 8 Surface x is defined by the annulus formed by the difference between diameters A and A2
31、. ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 4THIS PAGE INTENTIONALLY LEFT BLANK ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrica
32、l Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 5 ANNEX A OUTLINE DRAWING (Normative) ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 6THIS PA
33、GE INTENTIONALLY LEFT BLANKANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 7 Figure A1 - Maximum Outline Drawing Table A1 - Maximum Outline Dimensions (Note 3) Reference Standa
34、rd Dimensions (inches) Nearest Metric Equivalent (millimeters) E 0.181 4.5 A 2.0 50.7 K (GX5.3) 0.98 25 (2) K (GU5.3) 0.94 24 (2) L 1.9 50.5 N 1.5 38.4 R 3.3 84 R1 1.8 46.3 R2 0.8 21.1 V 0.09 2.4 W 1.8 48.0 a 0.82 20.8 b 0.2 5.3 c 0.4 9.0 Notes 1 Below this line the corresponding gauge applies. 2 Th
35、e free space requirements for the lamp neck and lampholder of ANSI C81.61 and C81.62 apply. 3 The maximum outline dimensions are the same as shown in 60630-IEC-4010. ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th
36、Street, Suite 1847, Rosslyn, VA 22209 8THIS PAGE INTENTIONALLY LEFT BLANK ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 9 ANNEX B BIBLIOGRAPHY (Informative) ANSI C78.24-2001
37、Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers Association 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 10THIS PAGE INTENTIONALLY LEFT BLANK ANSI C78.24-2001 Revision of ANSI C78.24-1995 Copyright 2001 by ANSLG - National Electrical Manufacturers As
38、sociation 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209 11 BIBLIOGRAPHY ANSI C78.379-1994, American National Standard for Electric Lamps - Reflector Lamps - Classification of Beam Patterns IEC 60357-1982, Tungsten Halogen Lamps (Non-Vehicle). IEC 60630-1994, Maximum Lamp Outlines for Incandescent Lamps. NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION 1300 NORTH 17TH STREET, SUITE 900 ROSSLYN. VA 22209www.NEMA.orgTO ORDER ADDITIONAL NEMA STANDARDS VISITWWW.GLOBAL.IHS.COM OR CALL 1-800-854-7179/1-303-397-79565612_0514TB
