1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.1431-1997 (R2016)Electric LampsSlide Projector Lamps, Condensing, Dichroic, Two-inch (51mm), Integral Reflector, Rim Reference Tungsten-Halogen Lamps with GY 5.3 BasesANSI C78.1431-1997 (R2016) Page 1 2016 National Elect
2、rical Manufacturers Association ANSI C78.1431-1997 (R2016) American National Standard for Electric Lamps Slide Projector Lamps, Condensing, Dichroic, Two-inch (51 mm), Integral Reflector, Rim Reference Tungsten-Halogen Lamps with GY 5.3 Bases Secretariat: National Electrical Manufacturers Associatio
3、n Approved: March 3, 2016 American National Standards Institute, Inc. ANSI C78.1431-1997 (R2016) Page 2 2016 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development
4、 and approval of the document at the time it was developed. Consensus does not necessarily mean that there is unanimous agreement among every person participating in the development of this document. ANSI standards and guideline publications, of which the document contained herein is one, are develo
5、ped through a voluntary consensus standards development process. This process brings together volunteers and/or seeks out the views of persons who have an interest in the topic covered by this publication. While NEMA administers the process to promote fairness in the development of consensus, it doe
6、s not write the document and it does not independently test, evaluate, or verify the accuracy or completeness of any information or the soundness of any judgments contained in its standards and guideline publications. NEMA disclaims liability for any personal injury, property, or other damages of an
7、y nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, application, or reliance on this document. NEMA disclaims and makes no guaranty or warranty, expressed or implied, as to the accuracy or completeness of any
8、information published herein, and disclaims and makes no warranty that the information in this document will fulfill any of your particular purposes or needs. NEMA does not undertake to guarantee the performance of any individual manufacturer or sellers products or services by virtue of this standar
9、d or guide. In publishing and making this document available, NEMA is not undertaking to render professional or other services for or on behalf of any person or entity, nor is NEMA undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on
10、 his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances. Information and other standards on the topic covered by this publication may be available from other sources, which the user
11、 may wish to consult for additional views or information not covered by this publication. NEMA has no power, nor does it undertake to police or enforce compliance with the contents of this document. NEMA does not certify, test, or inspect products, designs, or installations for safety or health purp
12、oses. Any certification or other statement of compliance with any health- or safety-related information in this document shall not be attributable to NEMA and is solely the responsibility of the certifier or maker of the statement. ANSI C78.1431-1997 (R2016) Page i 2016 National Electrical Manufactu
13、rers 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 criteria for approval have been met by the standards developer. An America
14、n 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. Substantial agreement m
15、eans 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 existence of an American National Standard does not in any respect preclude anyone, whether s/he has
16、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 Institute, Inc., does not dev
17、elop 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, Inc. Requests for interpre
18、tations 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, Inc., require that action be taken periodically to re
19、affirm, 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 Electrical Manufacturers Association 1300 North 17thStreet, Suite 900 Ross
20、lyn, Virginia 22209 2016 National Electrical Manufacturers Association All rights, including translation into other languages, reserved under the Universal Copyright Convention, the Berne Convention for the Protection of Literary and Artistic Works, and the International and Pan American copyright c
21、onventions. 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 C78.1431-1997 (R2016) Page ii 2016 National Electrical Manufacturers Association Fore
22、word (This Foreword is not part of ANSI C78.1431-1997) Suggestions for improvement of this standard should be submitted to the Secretariat C78, American National Lighting Group of the National Electrical Manufacturers Association, 1300 North 17thStreet, Suite 900, Rosslyn, VA 22209. This standard wa
23、s processed and approved by Accredited Standards Committee on Electric Lamps, C78. Committee approval of the standard does not necessarily imply that all committee members voted for that approval. ANSI C78.1431-1997 (R2016) Page iii 2016 National Electrical Manufacturers Association CONTENTS Forewor
24、d ii 1 Scope1 2 Normative Reference .1 3 Ratings1 4 Performance 2 5 Restrictions 2 6 Cautionary Notice . 2 7 Physical Characteristics. 2 8 Test Procedures .3 Annex A (Normative) 4 ANSI C78.1431-1997 (R2016) Page iv 2016 National Electrical Manufacturers Association ANSI C78.1431-1997 (R2016) Page 1
25、2016 National Electrical Manufacturers Association 1 Scope This standard consolidates the lamps commonly used for slide projectors into a single standard. The lamps contained in this standard are not to be considered as interchangeable. Physically they will all fit the common socket used for these l
26、amps. The photometry of each lamp is dependent upon the system for which it was designed and on the system in which it is used. A sample system and representative photometric values are found in the Annex. 2 Normative References The following standards contain provisions which, through reference in
27、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 based on this American National Standard are encouraged to investigate the possibility of applying the
28、most recent editions of the standards indicated below. ANSI C78.1413-1989 (R1994) American National Standard for Dimensions and Centering Systems for Projection Lamps51 mm (2 in.) Integral Reflector, Rim Reference Lamps with GX5.3, GY5.3 and GU5.3 Bases ANSI C78.1450-1983 (R1994) American National S
29、tandard for Projection Lamps, IncandescentMethod for Life Testing ANSI C81.61-1990 (R1996) American National Standard for Electrical Lamp BasesSpecifications for Bases (Caps) for Electric Lamps ANSI IT7.201-1991 Audiovisual Systems-slide Projectors and Filmstrip Projectors-Illumination Test IEC 682-
30、1980 Standard Method of Measurement of Pinch Temperature or Quartz-Tungsten-Halogen Lamps 3 Ratings This standard includes the following lamps: ELH, ENG, ENH. Table 1 Lamp Ratings ANSI Designation Watts Volts Life (hrs.) Working Distance (mm) Correlated Color Temperature (K) ELH ENG ENH 300 300 250
31、120 120 120 35 15 175 152.4 152.4 152.4 3350 3450 3250 ANSI C78.1431-1997 (R2016) Page 2 2016 National Electrical Manufacturers Association 4 Performance Table 2 Representative Values ANSI Designation Nominal Screen Illumination (lumens) Nominal Comer/Center Ratio (%) ELH ENG ENH 650 800 400 50 50 5
32、0 NOTE: The representative values shown were obtained with a typical projection system as described in the annex. Manufacturers may rate their products based on a different projection system, consult the manufacturer for details. 5 Restrictions Operating Position.Base down to horizontal plus 15 Temp
33、erature Limits 400C maximum on seals 250C minimum on bulb Protective Shield.See Cautionary Notice 6 Cautionary Notice To assure maximum safety during handling and use of the subject lamps, the following notices should be observed: a) Tungsten-halogen lamps operate at high temperature and at internal
34、 gas pressures above atmospheric pressure. Consequently, a lamp could shatter. Certain lamps may also emit some amount of ultraviolet radiation. Therefore, a suitable protective shield, screening technique, or both shall be used with the luminaire to protect people and surroundings from both hazards
35、. b) Always read and observe the information contained in the lamp manufacturers caution notice. 7 Physical Characteristics Base Specifications: GY5.3: see ANSI C81.61. Dimensions: General dimensions for this type of lamp are covered in ANSI C78.1413. ANSI C78.1431-1997 (R2016) Page 3 2016 National
36、Electrical Manufacturers Association 8 Test Procedures Life Open rack, horizontal burning position with cooling to maintain temperature limits in accordance with ANSI C78.1450. Illumination.See ANSI IT7.201. Seal TemperatureMeasurement procedure is defined in IEC 682. Operating TempStandard method o
37、f measuring other lamp operating temperatures (bulb and base) are under consideration. ANSI C78.1431-1997 (R2016) Page 4 2016 National Electrical Manufacturers Association ANNEX A (Normative) COMPONENT DESCRIPTION 1: Lamp ELH ENG ENH 2: Heat Absorbing Glass 3: Biconvex Condenser Lens Focal Length 76
38、.9mm 76.9mm 76.9mm 4: Film Plane: Aperture Size 23.01mm 34.11mm 23.01mm 34.11mm 23.01mm 34.11mm 5: Projection Lens Focal Length f/no. 127mm f/3.5 127mm f/3.5 127mm f/3.5 6: Projected Image Plane Image Size 685mm x 1016mm 685mm x 1016mm 685mm x 1016mm REFERENCE L 152.4mm 152.4mm 152.4mm M 24.3mm 24.3
39、mm 24.3mm Figure A.1 Typical component layout and dimensions for lamp projection system 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
