1、NEMA Standards PublicationNational Electrical Manufacturers Associationg36g49g54g44g3g38g26g27g17g22g27g28g16g21g19g19g23g3g11g53g21g19g19g28g12g41g82g85g3g72g79g72g70g87g85g76g70g3g79g68g80g83g86g178g43g76g74g75g44g81g87g72g81g86g76g87g92g3g39g76g86g70g75g68g85g74g72g178g48g72g87g75g82g71g86g3g82g7
2、3g3g48g72g68g86g88g85g76g81g74g38g75g68g85g68g70g87g72g85g76g86g87g76g70g86ANSI C78.389-2004 (R2009) Consolidation and Revision: ANSI C78.386-1989, C78.387-1990, C78.388-1989 and all Supplements/Amendments American National Standard Approved: August 9, 2004 Secretariat: ANSLG- National Electrical Ma
3、nufacturers Associationfor electric lamps High Intensity Discharge Methods of Measuring Characteristics 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 manufacturer, the consumer, and the general p
4、ublic. 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. Users are cautioned to obtain the latest
5、 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 American National Standard in the name of the
6、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 Caution Notice: This American National Standard may be revised or withdrawn at any time.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 withdraw this standard. Purchasers of American
7、 National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Editors Note: During the final editorial review, changes were made to select sections of this published document only, and not to the working base document. Copyright
8、 g211 2004 by American National Standard Lighting Group NEMA ANSI C78.389-2004 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
9、. 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. Substantial
10、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 existence of an American National Standard does not in any respect preclude anyone, whethe
11、r 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 Institute does not
12、 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 for interpret
13、ations should be addressed to the Committee Secretariat 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, o
14、r withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute.Editors Note: During the final editorial review, changes were made to select sections of this published document only,
15、and not to the working base document. Printed and distributed by: Information Handling Services/Global Engineering Documents 15 Inverness Way East, Englewood, CO 80112-5776 Under Contract with National Electrical Manufacturers Association Copyright g2112004 by American National Standard Lighting Gro
16、up 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 written permission of the publisher. Printed in the United States of America 2 Copyright
17、g211 2004 by American National Standard Lighting Group NEMA ANSI C78.389-2004 Foreword (This foreword is not part of ANSI C78.389-2004.) Suggestions for improvement of this standard should be submitted to the Secretariat C78, American National Standard Lighting Group, 1300 North 17th Street, Suite 1
18、847, Rosslyn VA 22209. This standard was processed and approved by Accredited Standards Committee on Electric Lamps, C78, and its Working Group, C78 WG 04 for High-Intensity Discharge Lamps. Committee approval of the standard does not necessarily imply that all committee members voted for that appro
19、val. David Mullen, Chairman, ASC C78 Ernesto Mendoza, Technical Coordinator Randolph N. Roy, Secretariat Matthew C. Clark, Senior Coordinating Editor Copyright g211 2004 by American National Standard Lighting Group NEMA 3 ANSI C78.389-2004 Table of Contents Introduction 7 1. Scope and purpose . 7 2.
20、 Normative references 7 3. Measurement of Lamp Voltage, Current, and Power 9 3.1. General. 9 3.2. Power supply.9 3.2.1. Harmonic content . 9 3.2.2. Voltage regulation 9 3.2.3. Source Impedance 9 3.3. Ambient condition. 9 3.4. Ballasts 9 3.5. Circuits and equipment grounding.10 3.6. Lamp position.11
21、3.7. Lamp stabilization11 3.7.1. General .11 3.7.2. Stabilization requirements 11 3.8. Instruments 13 3.8.1. Accuracy 13 3.8.2. Impedance limitations .13 3.8.3. Root-mean-square measurements .13 3.9. Corrections to compensate for presence of instruments in the lamp circuit 13 3.9.1. General .13 3.9.
22、2. Restoration-of-light method14 3.9.3. Correction for lamp ammeter reading 14 3.9.4. Correction for lamp voltmeter reading.15 3.9.5. Correction for lamp wattmeter reading 15 3.10. Measurement of lamp amperes and volts at nominal lamp wattage .15 3.10.1. Preferred method.15 3.10.2. Alternate Method
23、.16 4 Copyright g211 2004 by American National Standard Lighting Group NEMA ANSI C78.389-2004 4. Measurement of lamp current crest factor .16 4.1. General16 4.1.1 Methods of measurement .16 4.1.2 Measurement of lamp current crest factor during lamp warm-up .16 5. Measurement of lamp starting.17 5.1.
24、 General17 5.2. Conditioning of lamps for starting test.17 5.3. Test equipment and power supply17 5.3.1. General .17 5.4 Procedures .18 5.4.1. Procedure A for lamps not requiring a starting pulse.18 5.4.2. Procedure A for lamps requiring a starting pulse .19 6 Measurement of warm-up time 19 6.1. Gen
25、eral19 6.2. Test conditions.19 6.3. Selection and handling of lamps.20 6.4. Procedure .20 7. Testing lamps at maximum peak voltage across terminals 20 7.1. General20 7.2. Circuit for measurement20 7.2.1. Circuit for testing lamps not requiring a starting pulse20 7.2.2. Circuit for testing pulse-star
26、t lamps at maximum peak voltage across lamp terminals.21 7.3. Procedures .21 7.3.1. Procedure for testing lamps not requiring a starting pulse21 7.3.2. Procedure for testing pulse start lamps.21Measurement of maximum bulb and base temperature21 8.1. General22 8.2. Procedure .22 8.2.1. Thermocouple m
27、ethod for bulb temperature.22 8.2.2. Thermocouple method for base temperature 23 Copyright g211 2004 by American National Standard Lighting Group NEMA 5 ANSI C78.389-2004 8.2.3. Infrared-radiation method for bulb temperature23 9. Measurement of lamp reignition voltage spike 23 9.1. General23 9.2. Te
28、st circuit and equipment23 9.3. Procedure .24 10. Measurement of lamp reignition voltage (Vr) .24 10.1. General 24 10.2. Test circuit and equipment.24 10.3. Procedure24 11. Measurement of luminaire effect on lamp voltage rise.25 11.1. General 25 11.2. Test conditions .25 11.3. Procedure25 Annex A (n
29、ormative):. Containment testing procedure for metal halide lamps with quartz arc tubes.33 Annex B (normative):.Containment testing procedure for metal halide lamps with ceramic arc tubes37 Annex C (informative): Procedures for measurement of lamp starting40 C.1 Procedure B for lamps not requiring a
30、starting pulse.40 C.1.1 Metal Halide lamps 40 C.1.2 High-pressure Sodium and Mercury Lamps 40 C.2 Procedure B for lamps requiring a starting pulse41 C.2.1 Metal Halide lamps 41 C.2.2 High-pressure Sodium lamps .42 6 Copyright g211 2004 by American National Standard Lighting Group NEMA ANSI C78.389-2
31、004 Introduction This standard is a consolidation of three previous Method of Measurement standards: C78.386, Mercury Lamps Methods of Measuring Characteristics C78.387, Metal Halide Lamps Methods of Measuring Characteristics C78.388, High-Pressure Sodium Lamps Methods of Measuring Characteristics.
32、The reason for the consolidation is that in most cases the method of measurement is identical for all three High Intensity Discharge (HID) lamp types. However, some statements refer to only one or two of the three types. When reference to one or two lamp types is necessary the given lamp type discus
33、sed is either given a separate sub-clause or the name of the lamp type is shown in bold text. 1. Scope and purpose This standard describes the procedures to be followed and the precautions to be observed in measuring the electrical characteristics of high intensity discharge lamps as specified in th
34、e American National Standard Specifications for Mercury (Hg), High-pressure Sodium (HPS) and Metal Halide (MH) Lamps, as referenced in clause 2, Normative references.1It is the purpose of this standard to outline methods of measurement that will make it possible to obtain reproducible and accurate m
35、easurements of High Intensity Discharge lamp characteristics. Deviations from the procedures given in this standard are permissible for production or other testing, provided that the methods used give results in substantial agreement with the methods given herein. In cases of doubt, reference shall
36、be made to the methods specified in the appropriate American National standard, referenced in clause 2, to establish the validity of the results obtained by any alternate procedure. 2. Normative references The following standards contain provisions that, through reference in this text, constitute pr
37、ovisions 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 most recent editions of
38、the standards indicated below. ANSI/IEC C78.60360-2002, Electric lamps Standard Method of Measurement of Lamp Cap Temperature Rise ANSI C78.40-1992, American National Standard Specifications for Mercury Lamps ANSI C78.42-2001, American National Standard for Electric Lamps High-pressure Sodium Lamps
39、ANSI C78.43-2004, American National Standard for Electric Lamps Single-Ended Metal Halide Lamps 1In the absence of an appropriate lamp standard, consult with particular lamp manufacturer offering the lamp in question Copyright g211 2004 by American National Standard Lighting Group NEMA 7 ANSI C78.38
40、9-2004 ANSI C78.380-2002, American National Standard for Electric Lamps High-Intensity Discharge Lamps, Method of Designation ANSI C78.1381-1989 (R1996), American National Standard for Electric Lamps 70-Watt M85 Metal Halide Lamp ANSI C78.1385-1998, American National Standard for Electric Lamps 150-
41、Watt M81 Metal Halide Lamp ANSI C78.1386-1998, American National Standard for Electric Lamps 100-Watt M91 Metal Halide Lamp ANSI C78.1387-2001, American National Standard for Electric Lamps 250-Watt, M80 Double-Ended Metal Halide Lamps ANSI C82.5-1990 (R1995), Reference Ballasts for High-Intensity-D
42、ischarge Lamps ANSI C82.6-1985, Ballasts for High Intensity Discharge LampsMethod of Measurement ANSI C82.9-1996, Definitions for High-Intensity-Discharge Lamps, Ballasts and Transformers ANSI MC96.1-1982, Temperature Measurement Thermocouples ANSI/UL 496-1986, Standard for safety Edison-base Lampho
43、lders UL 1598-2000 Luminaires 8 Copyright g211 2004 by American National Standard Lighting Group NEMA ANSI C78.389-2004 3 Measurement of Lamp Voltage, Current, and Power 3.1. General This section covers the measurement of lamp current, voltage, and power for mercury, high-pressure sodium and metal h
44、alide lamps, i.e., High Intensity Discharge (HID) lamps, as measured on a reference ballast having a sinusoidal voltage input. In order to start the lamp on a reference ballast, a voltage higher than the specified voltage may be required. An external starting aid is preferred (for example, a Tesla c
45、oil) in this case. Due to their temperature behavior double-ended metal halide lamps must be operated in luminaires exclusively. Therefore, for measurement purposes, lamps must be operated within a luminaire simulator Most HID lamps have a glass outer jacket to absorb UV radiation. If this jacket is
46、 broken, the lamp should immediately be extinguished. Some lamps require additional UV protection. Refer to the luminaire code letter, ANSI C78.380 and the manufacturers instructions for additional information. Some metal halide lamps may rupture resulting in the discharge of glass fragments and ext
47、remely hot particles. Follow the safety instructions from the lamp manufacturer to minimize the risk to personnel and property. 3.2. Power supply 3.2.1. Harmonic content The supply voltage shall have a voltage wave shape such that the root-mean-square (rms) summation of the harmonic components shall
48、 not exceed 3% of the fundamental. 3.2.2. Voltage regulation The supply voltage should be as steady and free from changes as possible. For best results, the voltage shall be regulated to within g177 0.5%. If adequate automatic regulation is not available, constant checking and readjustments are essential if accurate measurements of lamp characteristics are to be obtained. 3.2.3. Source Impedance The power supply impedance, as measured at the point where the reference ballast and lamp are connected, shall not exceed 2 % of the
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1