1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.260-2002Electric lampsTubularTungsten-HalogenLamps, PhysicalCharacteristicsANSI C78.260-2002 Revision of ANSI C78.260-1998 Copyright 2002 by American National Standard Lighting GroupNEMA American National Standard Approv
2、ed July 23, 2002 Secretariat: ANSLG National Electrical Manufacturers Association for Electric Lamps Tubular Tungsten-Halogen Lamps Physical Characteristics An American National Standard implies a consensus of those substantially concerned with its scope and provisions. It is intended as a guide to
3、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 standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to th
4、e 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 interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation
5、 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 CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revi
6、se, 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. ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA ii American National Standard A
7、pproval 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 agreeme
8、nt 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 Amer
9、ican 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 Standa
10、rds 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 Institute.
11、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 acti
12、on 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. Printed and Distributed by Information Handling Services/Global Enginee
13、ring Documents 15 Inverness Way East, Englewood, CO 80112-5776 Under Contract with National Electrical Manufacturers Association Copyright 2002 by American National Standard Lighting Group In Affiliation with National Electrical Manufacturers Association All rights reserved. No part of this publicat
14、ion 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 C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA iii Table of contents Foreword iv 1 Scope 1
15、2 Normative references 1 3 Light center length (single-ended lamps only) . 1 4 Lamp types 2 5 Bulb wall temperature 2 6 Dimensions 3 7 Base alignment (double-ended lamps only). 3 8 Information for luminaire design 3 9 Marking 5 Tables and Figures Table 1 Double-ended lamps: linear source 9 Table 2 D
16、ouble-ended lamps: compact source. 9 Table 3 Double-ended lamps for 6.6 ampere circuits: non-preferred types (see 4.2) 10 Table 4 Single-ended Lamps for 6.6 ampere circuits: preferred types 10 Table 5 Single-ended lamps for 120- and 130-volt circuits 11 Table 6 General purpose tungsten-halogen bi-pi
17、n lamp with GY6.35 Base. 12 Table 7 Low-pressure, low voltage capsules with G4 and GY6.35 bases 12 Figure 1 Measurement of light center length 13 Figure 2 Double-ended lamp dimensions. 14 Figure 3 RSC base alignment gauge . 17 Appendices Annex A (informative) Bibliography. 21 Annex B (Informative) L
18、engths of double-ended R7s and RX7s photo lamps. 23 ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA iv Foreword (This foreword is not part of American National Standard C78.260-2002). Suggestions for improvement of this standard should be submitted to the Secretaria
19、t C78, American National Lighting Group of the 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 Work Group C78-1. Committee approval of the
20、standard does not necessarily imply 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 Third Edition 78(1)/4076 78(1)/4077 At the time, it approved this standard, the
21、ASC 78 Committee had the following members: Al Rousseau, Chair, C78 Al Rousseau, Technical Coordinator Randolph N. Roy, Secretariat Ken Denton, Consulting Editor Organization Represented: Name of Representative: Advance Transformer Company Bob Erhardt Edison Electric InstituteWilliam Maguire (Delega
22、te) General ElectricEdward Yandek Selmar Dorsey (alt) GE Lighting SystemsRebecca Lancaster Mike Owens (alt) Holophane Lighting Co.Michael Tanner Illuminating Engineering Society Rita M. Harrold InterTek Testing Services, IncDavid Ellis Magnetek .William Brosius National Electrical Manufacturers Asso
23、ciation .William E. Buckson (Delegate) Fred Carpenter (alt Delegate) OSRAM SYLVANIA INC. .Peter Bleasby David Mullen Philips Lighting Company.Al Rousseau Underwriters Laboratories Inc. .David Belt ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA v At the time it publ
24、ished this standard, the C78-1 Sub-Committee had the following members: Bernard Rachel, Chair C78-1 Organization Represented: Name of Representative: Eastman Kodak Company . William Moore GE Lighting . Bernard Rachel Edward Yandek OSRAM SYLVANIA David Mullen Ray Fleming James Oetken Philips Lighting
25、 Company Al Rousseau Philips Mexicana, S.A. de C.V . Alejandro Seyffert Underwriters Laboratories Inc David Belt ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA vi This Page Intentionally Left Blank ANSI C78.260-2002 Copyright 2002 by American National Standard Ligh
26、ting GroupNEMA 1 AMERICAN NATIONAL STANDARD for Electric Lamps- Tubular tungsten-halogen lampsphysical characteristics 1 Scope This standard covers the dimensional limits and other physical characteristics required to assure the interchangeability and proper application of tubular tungsten-halogen l
27、amps. 2 Normative references The following standards contain provisions which, through reference in this text, 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 bas
28、ed on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI C81.61-1990 (R1996), Electric lamp bases ANSI Z535.1-1991, Safety color code ANSI Z535.3 -1991, Criteria for Safety Symbols ANSI Z535.4 -199
29、1, Product Safety Signs and Symbols ANSI/IEC C78.682-1997, Standard method of measuring the pinch temperature of quartztungsten halogen lamps ANSI/IEEE 268-1992, Metric practice 3 Light center length (single-ended lamps only) 3.1 E11 (Minican) The light center length (LCL) of lamps with the minican
30、(E11) base is measured from the center of the filament to the plane of a reference circle 0.531-inch in diameter on the surface of the 45-degree cone of the base, as shown in Figure 1. 3.2 BA15d (DC bayonet) The light center length (LCL) of lamps with the DC bayonet (BA15d) base is measured from the
31、 center of the filament to the top of the pin, as shown in Figure 1. 3.3 G4 The light center length (LCL) and the maximum overall length is measured from the bottom of the base pins. ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA 2 3.4 GZ9.5 The light center length
32、 (LCL) of lamps with the GZ9.5 base is measured from the center of the filament to the plane of the base pads, as shown in Figure 1. 3.5 GY6.35 The light center length (LCL) and the maximum overall length is measured from the bottom of the base pins as shown in Figure 1. 3.6 G9 The light center leng
33、th (LCL) of G9 based lamps is measured from the bottom of the press to the center of the filament geometry as shown in Figure 1. 4 Lamp types 4.1 Double-ended lamps for general lighting 4.1.1 Linear source Double-ended lamps of the linear-source type shall conform to the requirements in Table 1. 4.1
34、.2 Compact source Double-ended lamps of the compact-source type shall conform to the requirements in Table 2. 4.2 Double-ended lamps for 6.6 ampere circuits (non-preferred types) Double-ended lamps commonly used for airport service shall conform to the requirements in Table 3. NOTEThese lamps are no
35、 longer recommended for new installations and are under consideration for deletion. 4.3 Single-ended lamps for 6.6 ampere circuits (preferred types) Single-ended lamps commonly used for airport service shall conform to the requirements in Table 4. 4.4 Single-ended lamps for 120-130 volt circuits Sin
36、gle-ended lamps commonly used for general lighting and some lamps used for stage/studio lighting shall conform to the requirements in Table 5. 4.5 Single-ended lamps for low voltage circuits Single-ended lamps commonly used for general lighting on low voltage (6-24 volt) circuits shall conform to th
37、e requirements of Table 6. 5 Bulb wall temperature The bulb wall temperature shall be maintained at 250C (482F) minimum for proper operation of the halogen cycle. ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA 3 6 Dimensions The dimensions of double-ended tubular t
38、ungsten-halogen lamps shall conform to those shown in Figure 2. The dimensions of single-ended tungsten-halogen lamps shall conform to those shown in Tables 4,5, 6, and 7. NOTE: The metric equivalent values for light center length (LCL) have been shown to the nearest millimeter; those for maximum ov
39、erall length (MOL) and other dimensions have been shown to the nearest tenth of a millimeter. Where rounding was necessary, it was done in accordance with ANSI/IEEE 268. 7 Base alignment (double-ended lamps only) The base alignment of double-ended lamps shall be checked using a base alignment gauge
40、that conforms to Figure 3. The two ends of the lamps shall seat fully in the gauge. If the lamp does not seat fully in the gauge, it is rejectable. The purpose of the base alignment gauge described in Figure 3 is to check the alignment of the base and seal at one end of the lamp with respect to the
41、base and seal at the other end of the lamp. The testing shall be done in the following manner: With one end of the lamp inserted in the fixed end of the gauge and the lamp held in a horizontal position, the movable portion of the gauge is brought toward the lamp until the free end of the lamp enters
42、 the slot of the movable portion. 8 Information for luminaire design 8.1 Seal temperature In the lamps covered by this standard, the metal-to-glass seal at the end(s) of the lamp is intended for operation at temperatures not exceeding 350C (662F). All equipment in which these lamps are to be used sh
43、ould, therefore, be so designed that seal temperature can be maintained below this limit. The temperature measurement should be made with the thermocouple junction located over the central part of the metal-foil seal and in direct contact with the outer surface of the bulb material. See ANSI/IEC C78
44、.682 for further information. 8.2 Contact force (double-ended lamps only) The force exerted on the lamp contacts shall not exceed 7 pounds (3 N). The minimum force needed to maintain good electrical contact is dependent upon the type of contact materials used. Care should be taken to choose a suitab
45、le combination of contact force and contact materials so as to ensure adequate electrical contact under prolonged high-temperature operation. 8.3 Operation position For linear-source double-ended lamps, the axis of the bulb shall be within 4 degrees of the horizontal. For other types of lamps, there
46、 are no operation position restrictions unless otherwise stated by the manufacturer. ANSI C78.260-2002 Copyright 2002 by American National Standard Lighting GroupNEMA 4 8.4 Shielding To assure maximum safety during handling and use of the subject lamps, the following notices should be observed: Alwa
47、ys read and observe the information contained in the lamp manufacturers caution notice. Most tungsten-halogen lamps operate at high temperatures and internal gas pressures above atmospheric pressure. Consequently, a lamp could shatter. Certain lamps may also emit some amount of ultraviolet radiation
48、. Therefore, a suitable protective shield, screening technique, or both, shall be used with the luminaire to protect people and surroundings from both hazards, except when the lamp is: a. labeled “Low Pressure, Low Voltage“ tungsten halogen, i.e., a lamp with a rated voltage not to exceed 12 volts a
49、nd a working gas pressure below 2.5x105Pa (2.5 bar) as defined in IEC 60432-3. b. G9 based lamps that conform to the requirements of ANSI/IEC 60432-2 NOTE: UV protective shield may be required, consult the manufacturer for details. c. or manufactured with doped, UV blocking, quartz bulbs. NOTE: A shield for shattering may still be required, consult the manufacturer for details. Some commonly used Low Pressure, Low Voltage capsules are listed in Table 7. 8.5 Base/holder fits for lamps of table 6 - “General purpose lamps”
