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1、 ANSI C78.391-2004 American National Standard for Electric Lamps Characteristics of Subminiature Lamps of T1 and T1-3/4 Shapes Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:2
2、7:44 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:27:44 MDTNo reproduction or networking permitted
3、without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 American National Standard Approved August 3, 2004 Secretariat: ANSLG - National Electrical Manufacturers Association For Electric Lamps Characteristics of Subminiature Lamps of T1 and T1-3/4 Shapes An American National S
4、tandard 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 approved the sta
5、ndard 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 give an interpret
6、ation 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 CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time
7、. 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 National Standards Ins
8、titute. Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 1 of 18 Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:27:44 MDTNo reproduction or networking
9、 permitted without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 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
10、s 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 Standards Review, substantial agreement has been reached by directly, and materially affected interests.
11、Substantial agreement means much more than a simple majority, butnot necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The existence of an American National Standard does not in any respect preclude any
12、one, 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 to aid the manufacturer, the consumer, and the general public. The American National Standards Institu
13、te 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 Institute. Requests fo
14、r interpretations should be addressed to the secretariat or sponsor whose name appears on this title page. 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
15、 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. Printed and distributed by: Information Handling Services/Global Engineering Documents 15 Invernes
16、s Way East, Englewood, CO 80112-5776 Under Contract with National Electrical Manufacturers Association Copyright ? 2004 by American National Standard Lighting Group In Affiliation with National Electrical Manufacturers Association All rights reserved. No part of this publication may be reproduced in
17、 any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 2 of 18 Copyright National Electrical Manufacturers Association Provided by
18、IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:27:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 Table of Contents Foreword. 4 1 Scope 5 2 Reference Standards and Re
19、lated Publications 5 3 Lamp Designations. 5 4 Bulb Designations 5 5 Bulb Finish 6 6 Base Specifications. 6 7 Electrical, Photometry, and Life Characteristics and Requirements. 6 8 Electrical, Photometry, Life, and Physical Requirement Tables 8 TABLES 9 Table 1 T1 Bulb, SX4 Submidget Flanged Base. 11
20、 Table 2 T1 Bulb, GY1.3 Bi-pin Base. 11 Table 3 T1 Bulb, Wire Terminal. 11 Table 4 T1-3/4 Bulb, SX6 Midget Flanged Base. 12 Table 5 T1-3/4 Bulb, W2.1x4.9d Wedge Base. 13 Table 6 T1-3/4 Bulb, Wire Terminal. 14 Table 7 T1-3/4 Bulb, S5.7 Midget Grooved Base. 15 Table 8 T1-3/4 Bulb, GY3.2 Bi-pin Base 16
21、 Table 9 T1-3/4 Bulb, E5 Midget Screw Base 17 Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 3 of 18 Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:
22、27:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 Foreword (This Foreword is not part of ANSI C78.391-2004.) Suggestions for improvement of this standard should be submitted to the Secretariat C78, American National Standa
23、rd Lighting Group, 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 Working Group C78 WG-7 for Miniature and Sealed Beam Lamps. Committee approval of the standard does not necessarily imp
24、ly that all committee members voted for that approval. Information concerning the approval of this standard is based on the documents listed in the table below: Amendment/Change CDV RV 2nd Edition CDV C78_4153 RV C78_4154 David Mullen, Chairman C78 Nancy E. Towe, Technical Coordinator Randolph N. Ro
25、y, Secretariat Matthew C. Clark, Senior Coordinating Editor Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 4 of 18 Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale,
26、04/19/2007 09:27:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 CHARACTERISTICS OF SUBMINIATURE LAMPS OF T1 AND T1-3/4 SHAPES 1 Scope This standard sets forth the physical and electrical characteristics of those groups of
27、subminiature incandescent lamps with T1 and T1-3/4 bulb shapes. Lamps with various base or termination configurations are included. 2 Reference Standards and Related Publications 2.1 Normative References When the following American National Standards, referred to in this standard, are superseded by
28、a revision approved by the American National Standards Institute, the revision shall apply. ANSI C79.1 -2002, Nomenclature for Glass Bulbs Intended for use with Electric Lamps ANSI_IEC C81.61 -2003, Electrical Lamps Bases ANSI_IEC C81.63 -2004, Gauges for Electrical Lamp Bases and Lampholders ANSI C
29、78.370_390lcd-2002, ANS for Electric LampsAmendments to ANSI C78.370-1997 and ANSI C78.390-1998 ANSI C78.390 -1998, Method of Designation for Electric Lamps - Miniature and Sealed Beam Incandescent Lamps SAE Ground Vehicle Lighting Standards Manual, 2002 Edition 2.2 Related Publications ANSLG SR25d-
30、1997, Special Report on Assigned Miniature Lamp Codes 3 Lamp Designations Lamp number designations are assigned to miniature lamps according to ANSI C78.390, Numbers are assigned by the administrator of the Lamp Code Designation program. All lamp numbers covered by this standard are listed in Tables
31、 1 through 9 along with their rated voltage and design amperes, MSCd (mean spherical candela), life, LCL (light center length), MOL (maximum overall length), and filament shape as requested in their original lamp code designation requests. If a manufacturer objects to a newly issued lamp code design
32、ation number, see the resolution procedure in C78.370_390lcd supplement to C78.390. 4 Bulb Designations Bulb designations are defined in ANSI C79.1. Since the traditional eighth-inch sizes have long been utilized for lamps of this kind, their use is continued in this standard. Copyright ? 2004 by Am
33、erican National Standard Lighting Group - NEMA Page 5 of 18 Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:27:44 MDTNo reproduction or networking permitted without license fro
34、m IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 5 Bulb Finish Unless otherwise indicated, the bulbs of all lamps in Tables 1 through 9 shall have a clear finish. 6 Base Specifications 6.1 Bases on finished lamps shall comply with the standard sheets in ANSI C81.61. Standard sheets for th
35、e gauges for checking bases are in ANSI C81.63. 6.2 Wire terminal type lamp bases are not standardized. They normally consist of lead wires extending from the lamp pinch/bead or butt seal to be used for an external connection. 7 Electrical, Photometry, and Life Characteristics and Requirements 7.1 T
36、he values of lamp voltage, current, and candela in Tables 1 through 9 are those rated or design values that apply at an initial time after the lamps have been aged or seasoned for 1% of rated life or 10 hours, whichever is less. See SAE Standard J573, Miniature Lamp Bulbs in SAE Ground Vehicle Light
37、ing Standards Manual. 7.2 Lamp current and candela shall be measured at rated voltage or accelerated test voltage ? 0.1 volts. Lamps shall be operated at AC or DC voltage equal to their rated or accelerated test voltage. 7.3 For life testing the voltage shall also be maintained at rated voltage or a
38、ccelerated test voltage ? 0.1 volts. Life of lamps listed in the Tables is that from AC operation. Life of most T1 or T1-3/4 subminiature lamps may be substantially reduced from DC operation. Consult manufacturer for additional information. Also, life listed in the Tables is that from laboratory tes
39、ting, and not from testing in various applications. 7.4 Lamp Current No more than 20% of the test lamps shall deviate from the current specified for the relevant lamps listed in the Tables by more than an allowance of 10%. 7.5 Initial Candela No more than 20% of test lamps with clear finish shall de
40、viate from the candela value specified for the relevant lamps in the Tables by more than an allowance of 25%. 7.6 Life Test lamps shall yield an average life to burnout of not less than that specified for the relevant lamps listed in the Tables as modified below to take into account the statistical
41、effect of sample size. Sample size Allowable variation from specified life (%) 10-19 8 20-39 7 40-99 6 100 or more 5 Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 6 of 18 Copyright National Electrical Manufacturers Association Provided by IHS under license with NEMALicens
42、ee=NASA Technical Standards 1/9972545001 Not for Resale, 04/19/2007 09:27:44 MDTNo reproduction or networking permitted without license from IHS -,-,- ANSI C78.391-2004 Revision of ANSI C78.391-1997 Copyright ? 2004 by American National Standard Lighting Group - NEMA Page 7 of 18 7.7 Estimated perfo
43、rmance characteristics at other than design voltage may be obtained by use of the following formulas. These are only approximations and the accuracy diminishes as V and V1 become more widely separated. (Usually no more than 50% is acceptable.) 7.7.1 Current consumption of a lamp is approximately pro
44、portional to the 0.55 power of the voltage ratio. Voltage ratio factor = 55. 1 V V ? ? ? ? ? ? ? ? , where V = Application Voltage and V1 = Rated Voltage This voltage ratio factor when multiplied by the design current in amps approximates the new current at the application voltage. 7.7.2 Mean spheri
45、cal candela of a lamp is approximately proportional to the 3.5 power of the voltage ratio. Voltage ratio factor = 5 . 3 1 V V ? ? ? ? ? ? ? ? , where V = Application Voltage and V1 = Rated Voltage This voltage ratio factor when multiplied by the rated candela approximates the new candela at the appl
46、ication voltage. 7.7.3 Life of a lamp is approximately proportional to the 12th power of the inverse voltage ratio. Voltage ratio factor = 12 1 V V ? ? ? ? ? ? , where V = Application Voltage and V1 = Rated Voltage. This voltage ratio factor when multiplied by the rated life hours approximates the n
47、ew life at the application voltage. 7.7.4 Accelerated Life Tests: Since many of the lamps in this standard have extremely long life, accelerated life testing (testing at higher than rated voltage) may be used to approximate the actual life at rated voltage in much less time. For reasonably accurate results the accelerated voltage should not exceed more than 150% of the rated voltage. The following formula may be used: ? ? ? ? ? ? voltage dacceler