1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C82.5-2016Lamp Ballasts High-Intensity Discharge and Low-Pressure Sodium LampsANSI C82.5-2016 Page 1 2016 National Electrical Manufacturers Association ANSI C82.5-2016 American National Standard for Lamp Ballasts High-Intens
2、ity Discharge and Low-Pressure Sodium Lamps Secretariat: National Electrical Manufacturers Association Approved: August 23, 2016 American National Standards Institute, Inc. 2016 National Electrical Manufacturers Association NOTICE AND DISCLAIMER The information in this publication was considered tec
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12、 ANSI C82.5-2016 Page i 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
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18、y 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 Electrical Manufacturers Association 1300 North 17thStreet, Suite 9
19、00 Rosslyn, 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 copy
20、right 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 C82.5-2016 Page ii 2016 National Electrical Manufacturers Association CONTENTS
21、 1 Scope . 1 2 Normative References 1 3 Definitions 1 4 Types of Reference Ballasts . 1 5 Ballast Marking 2 6 Design Characteristics . 2 7 Operating Characteristics 3 8 Methods of Measurement and Calibration . 4 ANNEXES Annex A 8 Annex B Measurement and adjustment of the impedance and power-factor c
22、haracteristics of a reference ballastguide for use of the preferred method 9 Annex C Measurement and adjustment of the impedance and power-factor characteristics of a reference ballastdescription of and guide for an alternate method 11 FIGURES Figure 1 Circuit for Impedance Measurement 7 Figure 2 Ci
23、rcuit for Power-Factor Measurement 7 Figure C1 Circuit for impedance and power-factor measurement 11 ANSI C82.5-2016 Page 1 2016 National Electrical Manufacturers Association 1 Scope This standard describes the essential features and operating characteristics of reference ballasts for high-intensity
24、 discharge and low-pressure sodium lamps operating on 60 Hz sinusoidal ballast systems. The items specified are those necessary to ensure accurate and reproducible results when lamps or ballasts are being tested. The specific values of rated input voltage and impedance for each lamp type are listed
25、in the appropriate American National Standards for high-intensity discharge and low-pressure sodium lamps. 1.1 Important Patent Disclaimer At the time of publication, it is possible that some elements of this document may be the subject of patent rights. When this standard was approved for publicati
26、on, the National Electrical Manufacturers Association (NEMA) did not know of any patent applications, patents pending, or existing patents. NEMA shall not be held responsible for identifying any or all such patent rights. 2 Normative References The following standards contain provisions that, throug
27、h reference in this text, constitute provisions of this American National Standard. 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 the standards indicated
28、below. ANSI C78.40-2016 American National Standard for Electric LampsSpecifications for Mercury Lamps ANSI C78.41-2006 American National Standard for Electric LampsGuidelines for Low-Pressure (LPS) Sodium Lamps ANSI C78.42-2009 (R2016), American National Standard for Electric LampsHigh-Pressure Sodi
29、um (HPS) Lamps ANSI C78.43-2013 American National Standard for Electric LampsSingle-Ended Metal Halide Lamps ANSI C78.44-2016, American National Standard for Electric LampsDouble-Ended Metal Halide Lamps ANSI C82.6-2015, American National Standard for Lamp BallastsBallasts for High-Intensity Dischar
30、ge (HID) LampsMethods of Measurement ANSI C82.9-2016, American National Standard for Lamp BallastsHigh-Intensity Discharge (HID) and Low-Pressure Sodium (LPS) LampsDefinitions 3 Definitions Definitions of terms that apply specifically to the subject treated in this standard are provided in ANSI C82.
31、9. 4 Types of Reference Ballasts There are two types of reference ballasts. The fixed-impedance type is adjusted and calibrated at the time of manufacture and is permanently set at a particular value of impedance. It can be used for only the type of lamp for which it was calibrated. The variable-imp
32、edance type of reference ballast consists of an adjustable reactor, usually of the moving core type, and a separate variable resistor connected in series. ANSI C82.5-2016 Page 2 2016 National Electrical Manufacturers Association 5 Ballast Marking 5.1 Marking A reference ballast shall be provided wit
33、h a durable nameplate securely attached to a permanent structure of the ballast. The information shown in clauses 5.1.1 or 5.1.2 shall be legibly etched or stamped on it. 5.1.1 Fixed-Impedance Type Information on the nameplate shall include the following: a. Lamp type, watts, and current b. Supply v
34、oltage and frequency c. Impedance d. Manufacturers catalog or model number e. Manufacturers serial number f. Manufacturers name 5.1.2 Variable-Impedance Type Information on the nameplate shall include the following: a. Impedance range at the rated frequency(ies) b. Maximum voltage per coil and maxim
35、um voltage across reactor c. Maximum current per coil d. Manufacturers catalog or model number e. Manufacturers serial number f. Manufacturers name g. Frequency(ies) h. Connection diagram 5.2 Magnetic Shielding If a reference ballast is magnetically shielded, this information shall be indicated on t
36、he nameplate described in clause 5.1. 6 Design Characteristics 6.1 General Design A reference ballast is an inductive reactor, with or without an additional series resistor, designed to provide the operating characteristics listed in clause 7. 6.2 Permanence of Impedance 6.2.1 Fixed ImpedanceType Ba
37、llasts Since the fixed-impedance type of reference ballast is intended to serve as a permanent baseline of reference, it is vitally important that the ballast be so constructed as to provide permanence of impedance under normal conditions of use and abuse. A check of the impedance of the ballast sha
38、ll give values repeatable to within 0.1% of those previously determined. ANSI C82.5-2016 Page 3 2016 National Electrical Manufacturers Association 6.2.2 Variable impedancetype ballasts The variable-impedance type of reference ballast, when adjusted to any given value of impedance shall be capable of
39、 holding that adjustment through normal periods of use. For this purpose, suitable means shall be provided for mechanically locking the movable core (or other movable parts) in any desired position. 6.3 Enclosure This clause intentionally left blank. 6.4 Magnetic shielding A reference ballast, to be
40、 considered magnetically shielded, shall be so designed and constructed that its impedance at reference current shall not be changed by more than 0.2% when a -inch-thick plate of magnetic steel is placed within one inch of any face of the ballast enclosure. The steel plate shall have dimensions at l
41、east two inches greater than the maximum dimension of the ballast enclosure and shall be placed in geometric symmetry to each surface as tested. In the event that a reference ballast is not magnetically shielded, precautions shall be taken to keep magnetic objects far enough from the leakage field t
42、hat the impedance of the ballast will not be altered by more than the 0.2% mentioned above. Table 1 Ballast Power Factors Lamp type Wattage Power factor 0.005 High-pressure sodium Metal halide Mercury Low-pressure sodium Low-pressure sodium All All All Less than 18 W 18 W and above 0.075 0.075 0.075
43、 0.075 0.060 Note: Wattage loss includes losses due to leads. 6.5 Inclusion of Instrument current coil Impedance When a variable-impedance type of reference ballast is being used, a choice may be made as to whether the impedance of the instrument current coils (the ammeter and wattmeter) will or wil
44、l not be included as part of the impedance of the reference ballast. Either choice is satisfactory, but the other aspects of the calibrating procedure and the subsequent use of the ballast shall be compatible with the particular procedure being followed. For the sake of simplicity, the procedures de
45、scribed in this standard are those applicable when the impedance of the current coils is not included in the impedance of the reference ballast. Annex A, however, covers the changes in procedures and circuitry that would be required if the current coils were included. 7 Operating characteristics 7.1
46、 General The specifications in this section apply to measurements made at the rated frequency of the ANSI C82.5-2016 Page 4 2016 National Electrical Manufacturers Association reference ballast and with the ballast parts and windings conditioned at an ambient temperature of 25C 5C. 7.2 Rated input vo
47、ltage The rated input voltage of a reference ballast shall be in accordance with the value specified in the applicable standards from ANSI C78.40, ANSI C78.41, ANSI C78.42, ANSI C78.43, or ANSI C78.44. 7.3 Impedance The impedance of a reference ballast shall be within 0.5% of the value specified in
48、the applicable standard from ANSI C78.40, ANSI C78.41, ANSI C78.42, ANSI C78.43, or ANSI C78.44. 7.4 Linearity For any value of the current from 50%115% of the reference current, the impedance of the reference ballast shall be within 4.0% of the value specified in the applicable standard from ANSI C
49、78.40, ANSI C78.41, ANSI C78.42, ANSI C78.43, or ANSI C78.44. 7.5 Ballast Power Factor The power factor of the reference ballast (ratio of ballast wattage loss to ballast volt-amperes) when the ballast is carrying reference current shall be as specified in Table 1. The wattage loss will include losses due to lead resistance. In case of conflict between Table 1 and ANSI C78.40, ANSI C78.41, ANSI C78.42, ANSI C78.43, or ANSI C78.44, the value in the appropriate lamp standard shall be used. 7.6 Te
