NEMA C81 64-2005 Guidelines and General Information for Electric Lamp Bases Lampholders and Gauges《电灯灯头 灯座和规格用一般信息和指南》.pdf

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1、 ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 American National Standard Guidelines and General Information for Electric Lamp Bases, Lampholders and Gauges ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 American National Standard Approved: July 27, 2005 Se

2、cretariat: ANSLG- National Electrical Manufacturers AssociationGuidelines and General Information for Electric Lamp Bases, Lampholders and Gauges An American National Standard implies a consensus of those substantially concerned with its scope and provisions. It is intended as a guide to aid the man

3、ufacturer, 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 the standards

4、. 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 of an Amer

5、ican 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 CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time.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, revise, or with

6、draw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Copyright 2005 by American National Standard Lighting Group - NEMA Page 1 of 24ANSI_IEC C81.64-2005 Revision and Redesignati

7、on of ANSI C81.64-1993 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 standards developer. An American National Standard implies a consensus of t

8、hose 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 agreement means much more than a simple majority, but no

9、t 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 anyone, whether s/he has approved the standard or not, from manufactur

10、ing, 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 Institute does not develop standards and will in no circumstances give an

11、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 for interpretations should be addressed to the Committee Secretariat

12、referred to on the 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 reaffirm, revise, or withdraw this standard. Purchasers of American Nationa

13、l 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 Inverness Way East, Englewood, CO 80112-5776 Under Contract with National Electrical

14、 Manufacturers Association Copyright 2005 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 any form, in an electronic retrieval system or otherwise, without prior writt

15、en permission of the publisher. Printed in the United States of AmericaCopyright 2005 by American National Standard Lighting Group - NEMA Page 2 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 CONTENTS PAGE Foreword.4 Part I General .5 1 Scope 5 2 Normative references. .5 3

16、International Designation of Lamp Bases and Lampholders 6 4 General Information on Screw Shell Lamp Bases, Holders and Gauges .6 5 Nonproliferation Policy for Base and Lampholder Fits. 9 6 Holding Systems for Small Integral Reflector Projection Lamps with Rims of Various Sizes .9 7 Fit System for G5

17、 and G13 Based Tubular Fluorescent Lamps and Lampholders. 13 8 Guidelines for the retention of bases in lampholders 13 9 Information on Gauge Design13 10 Recommended Tolerances for Gauges .14 11 Creepage Distances and Clearances for Bases on Finished Lamps . 14 Part II Annexes.15 Annex A Formats for

18、 ANSI Standard Sheets . .16 Annex B Historical Background of the Edison Screw Fit .22 Copyright 2005 by American National Standard Lighting Group - NEMA Page 3 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 Foreword (This foreword is not part of American National Standard A

19、NSI_IEC C81.64-2005) This American National Standard, Guidelines and General Information for Electrical Lamp Bases, Lampholders and Gauges, ANSI_IEC C81.64-2005, gives guidance and information to designers and testing personnel on the use of ANSI_IEC C81.61-2003, ANSI_IEC C81.62-2003 and ANSI_IEC C8

20、1.63-2004. This revision takes into account the work done by the ANSI C81 committees to adopt IEC standard sheets from for IEC 60061-1, 60061-2 and 60061-3 and adopts, in large part, IEC 60061-4 with certain United States deviations. It includes the designation system, a guide to the selection of ba

21、ses and general information regarding bases, lampholders and gauges. Suggestions for improvement of this standard will be welcome. They should be sent to the Secretary of Committee C81. American National Standard Lighting Group, 1300 North 17thStreet, Suite 1752, Rosslyn, VA 22209. This standard was

22、 processed and approved for submittal to ANSI by Accredited Standards Committee on Electric Lamp Bases and Holders, C81. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. Information concerning the approval of this standard is based on t

23、he documents listed in the table below: Revision CDV_81_1-5-10-11_2656 RV_81_1-5-10-11_2657 Anthony Tufano, Chairman, C81 A.C. Rousseau, Technical Coordinator Randolph N. Roy, ANSLG Secretariat Matthew C. Clark, Senior Coordinating Editor Copyright 2005 by American National Standard Lighting Group -

24、 NEMA Page 4 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 Part 1 General 1 Scope This American National Standard gives guidance and information to designers and testing personnel on the use of ANSI_IEC C81.61, ANSI_IEC C81.62 and ANSI_IEC C81.63 and their supplements. It

25、includes the designation system and general information regarding bases (caps), lampholders and gauges. Many parts of this standard reference the adopted parts of IEC 60061-4 Lamp Caps and Holders Together with Gauges for Control of Interchangeability and Safety-Part 4: Guidelines and General Inform

26、ation. This standard is intended for use by standards engineers. In those cases where new proposals have to be prepared, so as to achieve uniformity in base/lampholder/gauge standards and testing procedures. It contains information from ANSI and the IEC in regard to bases (caps) and holders in gener

27、al use today, together with their relevant gauges. The gauges illustrated, although generally accepted in principle, are not necessarily the only form in which they can be made. This standard is applicable to bases, lampholders and gauges with the object of securing international interchangeability

28、and safety. 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 agreement

29、s based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. ANSI_IEC C78.81-2005, American National Standard For Electric Lamps- Double-capped Fluorescent Lamps-Dimensional and Electrical Characterist

30、ics ANSI_IEC C81.61-2005, American National Standard for Electric Lamp Bases ANSI_IEC C81.62-2005, American National Standard for Electric Lampholders ANSI_IEC C81.63-2005, American National Standard for Gauges for Electric Lamp Bases and Lampholders Copyright 2005 by American National Standard Ligh

31、ting Group - NEMA Page 5 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 ANSI C78.1413-2001, American National Standard for Electric Lamps - Two Inch (51mm) Integral-reflector-rim Reference Projection Lamps - Dimensions of Centering Systems ANSI C78.1417-1997, American Natio

32、nal Standard for Electric Lamps - 1.625-inch (42-mm) Integral Reflector Projection Lamps with GX5.3 or GY5.3 Bases - Dimensions and Centering System ANSI C78.1421-2002, American National Standard for Electric Lamps - Dimensions and Centering Systems for Projection Lamps - 35mm Integral Reflector Rim

33、 Reference Lamps with GZ4 Bases IEC 60061-4 Consolidated Edition 1.9 (2001-01), Lamp Caps and Holders Along with Gauges for the Control of Interchangeability and Safety, Part 4 IEC 60400 Consolidated Edition 6.2 (2004-11), Lampholders for Tubular Fluorescent Lamps and Starter Holders ISO/IEC Guide 5

34、1*, Guidelines for the Inclusion of Safety-aspects in Standards *Available from American National Standards Institute, 11 West 42nd Street, New York, NY 10036 UL 496-2000 Edison Screw Lampholders UL 542-1999, Lampholders, Starters and Starterholders for Fluorescent Lamps 3 International designation

35、of lamp bases and lampholders For this information see IEC 60061-4 section 7007-1-4 4 General Information on Screw Shell Lamp Bases, Holders and Gauges 4.1 Scope This section covers background information for all sizes of screw-shell lamp bases, both as separate bases and also in their final form as

36、 mounted on finished lamps, and for the corresponding sizes of screw-shell lampholders. In IEC 60061-4 the word “cap“ is used instead of the common North American term “Base“. Internationally a base is only the contact making and fixing part of a capless lamp. Copyright 2005 by American National Sta

37、ndard Lighting Group - NEMA Page 6 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 In IEC standards, the decimal point (.) is not used in dimensions; rather a comma (,) separates a decimal number e.g. 4,5 rather than 4.5. However, in the designation of a fit, the decimal poi

38、nt is used e.g. GY6.35. The screw shells used for plug-type fuses and fuse-holders employ the same thread form and the same thread dimensions as the medium (E26) size of lampholder and un-mounted base. See Standard Sheets 7004-21A-2 and 7005-21A-1 of IEC 60061-1 and 60061-2 for further details. 4.2

39、Form of Thread The screw thread as used on either the base or the holder has a theoretical cross section consisting of two circular segments, which are tangent to each other and have essentially equal radii. The contour of the threads and the general relationship of the diameter limits are shown in

40、IEC 60061-4 section 7007-11-2. 4.3 Gauging of Thread Dimensions 4.3.1 General Specific information for gauge design is described in detail in IEC 60061-4 section 7007-10-1. General information is given in 4.3.2 through 4.3.4. 4.3.2 Bases Two “go“ gauges of the threaded type are generally specified,

41、one for un-mounted bases and one for bases mounted on finished lamps. These gauges check simultaneously the maximum of both the major and minor diameters. They also check the minimum length of the threaded section of the base (dimension T or T1as appropriate). Each size of threaded gauge should have

42、, as a reference, a threaded master plug for checking it. One “not-go“ unthreaded ring gauge is specified. It is used both for un-mounted bases and for bases mounted on finished lamps. This gauge checks the minimum major diameter. The minimum minor diameter is not specified in the standard and, ther

43、efore, no means is provided for checking it. 4.3.3 Lampholders A “go“ gauge of the threaded plug type should be specified. This gauge checks simultaneously the minimum of both the major and minor diameters. It also checks the minimum and maximum depth from the top of the threaded shell to the depres

44、sed center contact. A “not-go“ unthreaded plug gauge is specified. This gauge checks the maximum minor diameter. Copyright 2005 by American National Standard Lighting Group - NEMA Page 7 of 24ANSI_IEC C81.64-2005 Revision and Redesignation of ANSI C81.64-1993 The maximum major diameter is not specif

45、ied in the standard and, therefore, no means is provided for checking it. 4.3.4 Bases and lampholders No gauges are provided for checking the thread form of either the base or the holder. The contour may, however, be examined on an optical comparator or similar equipment. There should not be any per

46、ceptible shoulder at the tangent point of the crest and root radii of the threaded gauges. The radii at the crest of the thread gauges shall not exceed the specified values but may be less by 0.001 inch (0.025 mm). Conversely, the radii at the root of the thread gauges shall be not less than the val

47、ues specified but may be greater by 0.001 inch (0.025 mm). 4.4 Contact-Making Gauges The specific gauges for use with each size of base or holder are described in detail in the Standard Sheets of ANSI_IEC C81.63, American National Standard for Gauges for Lamp Bases and Lampholders. The purpose of th

48、ese gauges is to assure that both the base and the holder have compatible diameters and lengths so that the base (on a finished lamp) can always be inserted into a holder far enough to make solid contact with the center electrical contact of the holder. The gauges are concerned not only with the len

49、gth of the threaded section of the shell, but also with the bulb shoulder size and shape (of the lamp) and with the entrance opening of the holder, to insure that there are no restrictions against entry of a finished lamp. 4.5 Notes on Principles of Dimensioning A “no-mans land“ is provided between the maximum base diameter and the minimum holder diameter. This is at least large enough to allow for two gauge-making tolerances (one base and one holder) witho