NEMA C78 1421-2002 Electric Lamps - Dimensions and Centering Systems for Projection Lamps - 35 mm Integral Reflector Rim Referencing Lamps with GZ4 Bases.pdf

1、1(0$6WDQGDUGV3XEOLFDWLRQ1DWLRQDO(OHFWULFDO0DQXIDFWXUHUV$VVRFLDWLRQ$16,&(OHFWULF/DPSVLPHQVLRQVDQG&HQWHULQJ6VWHPVIRU3URMHFWLRQ/DPSVPP,QWHJUDO5HIOHFWRU5LP5HIHUHQFLQJ/DPSVZLWK*=%DVHVANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 No

2、rth 17thStreet Suite 1847, Rosslyn, VA 22209 American National StandardApproved: April 24, 2002 Secretariat: ANSLG- National Electrical Manufacturers AssociationElectric Lamps Dimensions and Centering Systems for Projection Lamps - 35mm Integral Reflector Rim Referencing Lamps with GZ4 Bases An Amer

3、ican National Standard implies a consensus of those substantially concerned with its scope and provisions. It is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has a

4、pproved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. Users are cautioned to obtain the latest editions. The American National Standards Institute does not develop standards and will in no circumstances gi

5、ve 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 Institute. CAUTION NOTICE: This American National Standard may be revised or withdr

6、awn 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 writing the American Nationa

7、l Standards Institute. ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 iiAmerican National Standard Approval of an American National Standard requires verification by ANSI that the

8、requirements for due process, consensus, and other criteria for approval have been met by the standards developer. An American 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 Sta

9、ndards 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 that all views and objections be considered, and that a concerted effort be made toward

10、 their resolution. The existence of an American National Standard does not in any respect preclude anyone, whether s/he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. It is intended as a guide

11、to aid the manufacturer, the consumer, and the general public. 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 to issue an interpretation

12、of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the Committee Secretariat referred to on the title page. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedu

13、res 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 writing the American National Standards Institute. Print

14、ed and distributed by: Information Handling Services/Global Engineering Documents 15 Inverness Way East, Englewood, CO 80112-5776 Under Contract with National Electrical Manufacturers Association Copyright 2001 by American National Standard Lighting Group In Affiliation with National Electrical Manu

15、facturers Association All rights reserved. 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 C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright

16、2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 iiiTABLE OF CONTENTS Foreword .iv 1 Scope 1 2 Normative references 1 3 Related components .1 3.1 Identification .1 3.2 Bases2 3.3 Holding systems .2 4 Lamp dimensions 2 5 Centering devices2 5.

17、1 Critical dimensions2 5.2 Precise centering system2 5.3 Alternative centering system.2 Figures Figure 1 Lamp Dimensions.3 Figure 2 Centering systems4 Annexes Annex A (informative) Additional references .A-3 ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standar

18、d Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 ivFOREWORD (This Foreword is not part of ANSI C78.1421-2001) Suggestions for improvement of this standard will be welcome. They should be sent to the Secretariat, C78 Committee, National Electrical Manufacturers Association,

19、1300 North 17thStreet, Suite 1847, Rosslyn, VA 22209. This standard was processed and approved for submittal to ANSI by Accredited Standards Committee on Electric lamps, C78, and its subcommittee, C78-1. Approval of the standard does not necessarily imply that all committee members voted for its app

20、roval. Information concerning the approval of this standard is based on the documents listed in the table below: LB RV C78(1)/3872 C78(1)/3873 At the time of publications the C78 committee consisted of the following members: Al Rousseau, Chair C78 Bernie Rachel, Technical Coordinator Randolph N. Roy

21、, Secretariat Ken Denton, Consulting Editor Organization Represented: Name of Representative: Advance Transformer Company Norman Grimshaw Edison Electric Institute William Maguire (Delegate) GE Lighting Edward Yandak Illuminating Engineering Society Rita M. Harrold Intertek Testing Services, Inc. Da

22、vid Ellis MagneTek Michael A. Stein National Electrical Manufacturers Association William Buckson (Primary Delegate) Don Miletich (Alternate Delegate) Fred Carpenter (Alternate Delegate) OSRAM SYLVANIA INC. Peter Bleasby Philips Lighting Company Al Rousseau Underwriters Laboratories, Inc. David Belt

23、 At the time of publications the C78-1 Sub-Committee had the following members: Bernie Rachel, Chair C78-1 Organization Represented: Name of Representative: GE Lighting Bernie Rachel OSRAM SYLVANIA INC. David Mullen James Oetken (Alt.) Philips Lighting Company Al Rousseau Duane Will (Alt.) Alejandro

24、 Seyffert (Alt.) Underwriters Laboratories, Inc. David Belt Ken Kempel (Alt.) ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 1American National Standard Dimensions and centering Sy

25、stems for projection lamps - 35mm integral reflector rim reference lamps with GZ4 bases 1 Scope This standard specifies lamp dimensions of 35mm (1.38 inch) diameter integral reflector rim reference projection lamps with GZ4 bases so that Interchangeability with the appropriate holding systems will b

26、e assured. Since lamp position is controlled at the reflector rim, centering device dimensions of lamp holding systems also specified 2 Normative References The American National Standards that follow contain provisions, which through reference in this text constitute provisions of this Standard. At

27、 the time of publication of this Standard, edition dates of these normative reference standards were valid. However, since all standards are subject to revision, parties to agreements based on this Standard should determine and apply the most recent editions of the normative reference standards list

28、ed below. ANSI C78.370-1997, Method for the Designation of Photo Lamps ANSI C81.61-1990, Electric Lamp Bases ANSI C81.63-1991, American National Standard for Gauges for Electric Lamp Bases and Lampholders Other standards, which are not referred to in the text of this Standard but still may provide a

29、dditional relevant information, are listed in Annex A as informative references. 3 Related Components 3.1 Identification Projection lamps conforming to this standard should be identified with a 3-letter designation in conformance with ANSI C78.370. ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Co

30、pyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 23.2 Bases Finished lamps shall employ GZ4 bases conforming to the requirements of ANSI C81.61 and shall conform to the base gauge of ANSI C81.63. 3.3 Holding Systems The holding syste

31、ms shall employ the centering devices specified in Section 5. 4 Lamp Dimensions Lamp dimensions are specified in Figure 1 with only those dimensions required for Interchangeability given. The drawn shape of the reflector and neck area are not intended to specify or restrict the outer surface of the

32、lamp beyond the restrictions imposed by the standard for the base. Lamps shall have full 360-degree circular rim reference surfaces. 5 Centering Devices 5.1 Critical Dimensions Critical dimensions of centering devices are specified in Figure 2. 5.2 Precise Centering System The most precise lamp cent

33、ering system is the recessed device shown in Figure 2(a). The centering system shown in Figure 2(a) requires that the lamp be axially loaded such that surface x of the lamp mates to surface x of the centering device. Lateral location is restricted by surface y. 5.3 Alternative Centering System The a

34、lternative centering system shown in Figure 2(b) permits slightly greater displacement of the lamp axis as a result of the tolerance of the flashline diameter. The centering system shown in Figure 2(b) requires both an axial load component and a lateral load component such that surface x of the lamp

35、 mates to surface x of the centering device, and such that the major diameter A of the lamp mates to the studs defined by dimensions A1, A2, A3, and V. ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847,

36、 Rosslyn, VA 22209 3Standard dimensions Standard dimensions (inches) (millimeters) Reference Min. Nom. Max. Min. Nom. Max. A 1.350 - 1.390 34.30 - 35.30 MOL 1.575 - - 40.00 FIGURE 1 Lamp Dimensions ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting

37、 Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 4Standard Dimensions Standard Dimensions (inches) (millimeters)Reference Min. Nom. Max. Min. Nom. Max.A1 - 0.689 - - 17.50 - A2 - 0.344 - - 8.75 -A3 - 1.193 - - 30.30 -B (Note 2) 1.394 - 1.402 35.40 - 35.60 r - - 0.010 - - 0.25 T - - 1

38、.260 - - 32.00 U 0.055 - 0.065 1.40 - 1.65 V 0.085 - - 2.16 - - 14.5 15.5 14.5 - 15.5 Working distance is the distance from the reference surface x to the plane of the film gate. The value of the working distance is determined by the optical systems for which the lamp was originally designed. Note 1

39、: Figure 2(b) defines an existing centering system. Angles other than 120, and dimensions A2 and A3 as shown, may be appropriate. Note 2: Dimension B defines the diameter of reference surface y at distance U from reference surface x. Note 3: The drawing is intended to show the dimensions to be contr

40、olled. FIGURE 2 Centering Systems ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 ANNEX A (Informative) ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American N

41、ational Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 A-2THIS PAGE INTENTIONALLY LEFT BLANK ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 A-3In

42、formative References ANSI C78.1413-2001, Dimensions of Centering Systems for Two Inch (51mm) Integral Reflector Rim Reference Projection Lamps ANSI C78.1417-1997, Dimensions of Centering Systems for 1.65 Inch (42mm) Integral Reflector Rim Reference Projection Lamps with GX5.3 or GY5.3 Bases ANSI C78

43、.1450-1983 (R1994), Method for Life Testing - Incandescent Projection Lamps ANSI C78.1451-1995, Use of Protective Shields for Tungsten Halogen Lamps - Cautionary Notice ANSI C78.1452-1991 (R1995), Projection Lamp - Vocabulary ANSI C78.682-1997, Standard Method of Measuring the Pinch Temperature of Q

44、uartz-Tungsten-Halogen Lamps ANSI C78.1421-2002 Supercedes ANSI C78.1421-1992 Copyright 2002 by American National Standard Lighting Group- NEMA 1300 North 17thStreet Suite 1847, Rosslyn, VA 22209 A-4THIS PAGE INTENTIONALLY LEFT BLANK 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