1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.390-2006 (R2015)Electric Lamps Method of Designation for Electric Lamps Miniature and Sealed-Beam Incandescent LampsC78.390-2006 (R2015) American National Standard for Electric Lamps Method of Designation for Electric La
2、mps Miniature and Sealed-Beam Incandescent Lamps Secretariat: National Electrical Manufacturers Association Approved: June 25, 2015 American National Standards Institute, Inc. 2015 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered
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12、nt. ANSI C78.390-2006 (R2015) Page i 2015 National Electrical Manufacturers Association AMERICAN NATIONAL STANDARD Approval of an American National Standard requires verification by The American National Standards Institute, Inc. (ANSI) that the requirements for due process, consensus, and other cri
13、teria 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 Standards Review, substantial agreement has been reached
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16、l public. The American National Standards Institute, Inc., 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 o
17、f the American National Standards Institute, Inc. Requests for 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 CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time.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 Sta
18、ndards Institute, Inc., 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, Inc. Published by National Ele
19、ctrical Manufacturers Association 1300 North 17th Street, Suite 900 Rosslyn, Virginia 22209 2015 National Electrical Manufacturers Association All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literar
20、y 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 prior written permission of the publisher. Printed in the United States of America ANSI C78.390-2006
21、(R2015) Page ii 2015 National Electrical Manufacturers Association Foreword (This foreword is not part of American National Standard C78.390-2006.) Suggestions for improvement of this standard should be submitted to: Secretariat C78 National Electrical Manufacturers Association 1300 North 17th Stree
22、t, Suite 900 Rosslyn, Virginia 22209 This standard was processed and approved by Accredited Standards Committee on Electric Lamps, C78. Committee approval of the standard does not necessarily imply that all work group members voted for that approval. ANSI C78.390-2006 (R2015) Page iii 2015 National
23、Electrical Manufacturers Association CONTENTS Foreword ii 1. Scope . 1 2. Purpose 1 3. Normative References 1 4. Definitions . 2 5. Description of a Designation . 3 6. Criteria for Assignment of Designation for New Requests, Alternatives or Changes . 4 7. Administration of this Standard 5 8. Miniatu
24、re and Sealed-Beam Lamp Designation Request Form . 8 9. Glossary and Instructions for Miniature and Sealed-Beam Lamp Designation Forms . 8 ANNEX A Graphical Descriptions of Miniature Filament Type Mount Shape Designations 15 ANNEX B Authorized Prefix Letters . 17 ANNEX C Authorized Suffix Letters .
25、19 ANNEX D Miniature and Sealed-Beam Designation Request Form 21 ANNEX E Informative . 24 ANSI C78.390-2006 (R2015) Page iv 2015 National Electrical Manufacturers Association THIS PAGE INTENTIONALLY LEFT BLANK ANSI C78.390-2006 (R2015) Page 1 2015 National Electrical Manufacturers Association 1. Sco
26、pe This standard describes a system for the designation of miniature and sealed-beam lamps. A form is provided for the use of lamp manufacturers to request a designation assignment, alternative, or change. 2. Purpose 2.1 The purpose of the designation system defined by this standard is to provide a
27、nationally applicable and convenient lamp identification that may be used for both manufacturing and ordering purposes. The designation will ensure, for the user, the interchangeability of lamps that bear the same designation. 2.2 The lamp characteristics data given by a manufacturer on a Miniature
28、and Sealed-Beam Designation Request Form (Request Form) forms the basis for the assignment of a designation. They have not been approved by the American Standards Institute (ANSI) and do not constitute an American National Standard. Similarly, any consolidated listing of assigned designations with a
29、ssociated characteristics does not constitute an American National Standard. 3. Normative References 3.1 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
30、 valid. All standards are subject to revision, and parties to agreements based on this American National Standards are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI C78.379-2006, Classification of the Beam Patterns of Reflector
31、Lamps ANSI C79.1-2002, Nomenclature for Glass Bulbs Intended for Use with Electric Lamps ANSI_IEC C81.61-2005, Specifications for Bases (Caps) for Electrical Lamp Bases SAE J573-1998, Miniature Lamp Bulbs SAE J760-2004, Dimensional Specifications for General Service and Sealed Lighting Units SAE J25
32、95-2006, Performance Requirements for Sealed Beam Motor Vehicle Headlamps ANSI C78.390-2006 (R2015) Page 2 2015 National Electrical Manufacturers Association 3.2 Related Publications The following publications are not standards. They are special reports available, at nominal cost, from the Administr
33、ator. ANSLG SR25d-1997, Assigned Miniature Lamp Codes ANSLG SR26d-2002, ANSI Assigned Sealed-Beam Lamp Codes 4. Definitions In addition to the general definitions given here, a glossary of items used in conjunction with a Request Form is presented in Section 9. 4.1 Alternate Design - A lamp with ele
34、ctrical characteristics the same or similar to an existing lamp, but utilizing a different major feature such as bulb shape or filament shape that does not affect interchangeability. 4.2 Designation Program - The procedures and requirements of this standard formulated to provide designations for lam
35、ps. 4.3 Discharge Forward Lighting - An automotive lighting system, providing forward illumination, comprised of the headlamps, discharge source, ballast/starting system, and interconnecting wiring. 4.4 Halogen Infrared Reflector (HIR) Lamp - A tungsten-halogen lamp with an infrared coating on the b
36、ulb surface to reflect heat back to the filament. 4.5 Lamp Manufacturer - A manufacturer who produces finished lamps. 4.6 Miniature Lamp - In general, a lamp of 30 volts or less, intended for various applications other than general lighting or photographic.1 4.7 Pressed Glass Lamp - A reflector lamp
37、, the bulb of which consists of two glass parts fused together, namely a metallized reflecting bowl and a lens cover forming an optical system. 4.8 Reflector Lamp - An incandescent or discharge lamp in which part of the bulb, of suitable shape, is coated with a reflecting material so as to control t
38、he light. 4.9 Sealed-Beam Lamp - A pressed glass lamp designed to give a closely controlled beam of light. 4.10 Sponsor - The originator of a lamp designation request form. 1 Note: It is difficult to formulate an all-inclusive definition for miniature lamps. There are numerous exceptions to the abov
39、e definition. ANSI C78.390-2006 (R2015) Page 3 2015 National Electrical Manufacturers Association 4.11 Subminiature Lamp A lamp having maximum overall length (MOL) 0.52” (13.2 mm) or below. 4.12 Telephone Type Lamp - A lamp having a T2 or smaller bulb and a telephone slide base. These lamps may be u
40、sed in telephone switchboards or indicator panels on 6-120V circuits. 4.13 Variant - A lamp that is similar to an existing lamp and can be used interchangeably with the existing lamp in certain applications. 5. Description of a Designation 5.1 Designation for Lamps (Except Telephone Type Lamps) The
41、lamp designation shall consist of a one, two, three, or four digit number. Prefix and suffix letters or suffix numbers preceded by a hyphen, may be used also. The designation shall have no significance other than defined prefix and suffix letters, but shall serve merely as an identifying symbol. Oth
42、er than the use of hyphens, as defined in this standard, there shall be no spaces, separators or other undefined symbols used in a designation.2 5.1.1 Basic Number The basic number shall be composed of one, two, three, or four digits. A different number is assigned for each specifically different se
43、t of key electrical and physical characteristics. Key electrical and physical characteristics are: - Rated voltage - Rated life - Current or wattage - Bulb diameter - Mean spherical candela - Base designation (Miniature Lamp) - Maximum overall length - Approximate Initial Peak Beam Candlepower (Seal
44、ed-Beam Lamp) 5.1.2 Prefix Letters A prefix letter(s), when used, shall precede the basic number of a designation without any intervening spaces or other separators. Prefix letters are found in Annex B. 2 Note: Although none of the lamp characteristics will be evident from the lamp designation, they
45、 may be determined by reference to a lamp manufacturers catalog or to SR25 and SR26 ANSI C78.390-2006 (R2015) Page 4 2015 National Electrical Manufacturers Association 5.1.3 Suffix Letters A suffix letter(s), when used, shall follow directly after the basic number of a designation, without any inter
46、vening spaces or other separators. Suffix letters are found in Annex C. The following list shows suffix letters that have been used in lamp designations. They are not recommended for future use. * Helium Retardant C Coated F Frosted K Candelabra screw base L Lens end; or Long life M Miniature screw
47、base MB Miniature bayonet base NP Nickel plated base 5.1.4 Suffix Numbers A suffix number, preceded by a hyphen, shall follow the basic number, if needed. It may be used to indicate a variant from the basic lamp. Suffix numbers -1 through -4 are variants of the basic lamp. It may be necessary to con
48、sult with the manufacturer for the specific meaning. If both a suffix letter and a suffix number are needed to describe a lamp; the suffix letter shall follow directly after the basic number, then this combination shall be followed by a hyphen and the suffix number. 5.2 Designation for Telephone Typ
49、e Lamps The designation for telephone type lamps shall consist of a one, two, or three digit number which may be followed directly by an arbitrary letter(s). This number represents the rated voltage of the lamp. A suffix number corresponding to the telephone slide base number also may appear in the designation. Numbers for the bases may be found in ANSI C81.61. 6. Criteria for Assignment of Designation for New Requests, Alternatives or Changes 6.1 A basic number, following the format of 5.1.1, shall be assigned only to a lamp whose charact
