1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C78.41-2016 Electric Lamps Guidelines for Low-Pressure Sodium LampsANSI C78.41-2016 Page 1 2016 National Electrical Manufacturers Association ANSI C78.41-2016 American National Standard for Electric Lamps Guidelines for Low-
2、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 technically sound by the
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11、gns, or installations for safety or health purposes. 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 C78.41-2016 Page
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20、national 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 C78.41-2016 Page ii 2016 National Electrical Man
21、ufacturers Association Foreword (This foreword is not part of ANSI C78.41-2016) Suggestions for improvement of this standard should be submitted to the C78 Secretariat, NEMA, 1300 North 17thStreet, Suite 900, Arlington, Virginia 22209. This American National Standard has been approved by the ANSI Ac
22、credited Standards Committee, C78. Approval of the standard does not necessarily imply that all members voted for approval.ANSI C78.41-2016 Page iii 2016 National Electrical Manufacturers Association CONTENTS Part IGeneral Information: Provides references to related American National standards and o
23、ffers brief explanations for some of the numerical data given on the individual lamp data sheets in Part II. 1 Scope . 1 2 Normative References . 1 3 Lamp Designations . 2 4 Bulb Designations . 2 5 Base Specifications 2 6 Maximum Outline Drawing . 2 7 Other Safety Requirements and Information. . 2 8
24、 Methods of Measurement . 3 9 Electrical Characteristics . 3 10 Reference Ballasts 3 11 Ballast Design . 3 12 Information for Luminaire Design . 3 Part IILamp Data Sheets: Contains individual lamp data sheets for each type of low-pressure sodium lamp. 18W low-pressure sodium lamp, L69 . 6 35W low-pr
25、essure sodium lamp, L70 . 8 55W low-pressure sodium lamp, L71 . 10 90W low-pressure sodium lamp, L72 . 12 135W low-pressure sodium lamp, L73 14 180W low-pressure sodium lamp, L74 16 Part IIIMaximum Outline Drawings: Contains the maximum outline drawings applicable to each lamp size. Maximum outline
26、drawing for L69, L70, L71 lamps . 19 Maximum outline drawing for L72, L73, L74 lamps . 20 ANSI C78.41-2016 Page iv 2016 National Electrical Manufacturers Association ANSI C78.41-2016 Page 1 2016 National Electrical Manufacturers Association Part I General Information 1 Scope This standard describes
27、the physical and electrical requirements of the principal types of single-ended low-pressure sodium lamps. The electrical data provides the specific basis for ballast requirements for these lamps. 2 Normative References The following standards contain provisions which, through reference in this text
28、, 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 most rece
29、nt editions of the standards indicated below. ANSI C78.30-1997 (R2011) American National Standard for Electric LampsProcedure for Use in Preparation of Lamp Space Drawings ANSI C78.380-2016 American National Standard for Electric LampsHigh-Intensity Discharge Lamps (HID)Method of Designation ANSI C7
30、8.389-2004 (R2009) American National Standard for Electric LampsHigh-Intensity Discharge (HID)Methods of Measuring Characteristics ANSI C78.79-2014 American National Standard for Electric LampsNomenclature for Envelope Shapes Intended for Use with Electric Lamps ANSI C81.61-2017 American National St
31、andard for Electrical Lamp BasesSpecifications for Bases (Caps) for Electric Lamps ANSI C81.62-2017 American National Standard for Electric Lampholders ANSI C81.63-2007 (R2014) American National Standard for Gauges for Electric Lamp Bases and Lampholders ANSI C81.64-2005 (R2014) American National St
32、andardGuidelines and General Information for Electrical Lamp Bases, Lampholders and Gauges ANSI C82.4-2002 (R2010) American National Standard for Lamp BallastsBallasts for High-Intensity Discharge and Low-Pressure Sodium (LPS) Lamps (Multiple-Supply Type) ANSI C82.5-2010 American National Standard f
33、or Reference BallastsHigh-Intensity-Discharge and Low-Pressure Sodium Lamps ANSI C82.9-2016 American National Standard for Lamp BallastsHigh-Intensity Discharge (HID) and Low-Pressure Sodium (LPS) LampsDefinitions ANSI C78.62035-2016 American National Standard for Electric LampsDischarge Lamps (Excl
34、uding Fluorescent Lamps)Safety Specifications ANSI C78.41-2016 Page 2 2016 National Electrical Manufacturers Association IEC 60061-1:2005 Lamp caps and holders together with gauges for the control of interchangeability and safetyPart 1: Lamp caps IEC 60192:2001 Low-pressure sodium vapour lampsPerfor
35、mance specifications 3 Lamp Designations Designations for low-pressure sodium lamps are assigned in accordance with ANSI C78.380. For reference, the older designations are shown in parentheses in the lamp data sheets. Note that the number (two or three digits) following the first letter in the desig
36、nation (L for low pressure sodium), indicates a unique set of electrical characteristics. Following the number is a slash followed by a luminaire characteristic letter. Low-pressure sodium lamps are typically used in enclosed luminaires and have a luminaire characteristic code of “E.” Marking low-pr
37、essure sodium lamps with the ANSI designation is not required. 4 Bulb Designations Bulb designations are defined in ANSI C79.1. Due to long-term use of the conventional method of bulb designations, that use will continue herein with the equivalent metric bulb designations shown in parentheses (i.e.,
38、 BT28 BT90) in contrast with the use of metric primary dimensions elsewhere in this standard. 5 Base Specifications The BY22d base is described in ANSI C81.61. 6 Maximum Outline Drawings The maximum outline drawings in Part III of this standard show the maximum limits of the space that may be occupi
39、ed by any part of the bulb for each lamp type. These limits are in accordance with IEC 60192. Most luminaires for low-pressure sodium lamps constrain the dome end of the lamp and take up any eccentricity of the lamp by means of a moveable base holder. Accordingly, the maximum outline drawings allow
40、for the maximum bulb diameter at the dome end and for eccentricity at the base end. 7 Other Safety Requirements and Information Lamps shall comply with the requirements of ANSI/IEC C78.62035. Low-pressure Sodium lamps contain a quantity of sodium that may heat from a reaction with moisture in the ai
41、r or on the skin if the lamp is broken. Sodium may burn spontaneously when exposed to air. Consult the lamp manufacturers literature for information on the proper use, care, and disposal of these lamps. ANSI C78.41-2016 Page 3 2016 National Electrical Manufacturers Association 8 Methods of Measureme
42、nt An American National Standard for methods of measuring the electrical characteristics and the bulb and base temperatures of low-pressure sodium lamps has not been written. General guidelines for these measurements may be found in ANSI C78.389 and IEC 60192. 9 Electrical Characteristics 9.1 Lamp O
43、perating Characteristics The values of lamp volts, amperes, and watts shown on the individual lamp data sheets in Part II of this standard apply for lamps that have aged 100 hours. Lamp rms voltage may increase with operating hours. Contact the lamp manufacturer for details. 9.2 Warm-up Time Bare la
44、mps operating in still air shall reach a stabilized voltage within the time limit and at the ambient temperature specified on the applicable lamp data sheet in Part II of this standard. For purposes of this test, low-pressure sodium lamps have reached a stabilized voltage when their voltage does not
45、 vary more than 2% in any one-minute period. Lamps shall meet this requirement when operated on the appropriate reference ballast specified in Part II, section 4, and in the allowed operating position most adverse to warm-up. 10 Reference Ballasts Reference ballasts shall meet the general requiremen
46、ts described in ANSI C82.5. 11 Ballast Design General ballast requirements are described in ANSI C82.4. The following requirements shall be met over the full range of input voltage allowed for the ballast. 11.1 Open Circuit Voltage The minimum ballast open circuit voltages shown on the individual la
47、mp data sheets assure starting and operating reliability over lamp life. The percentage probability has not yet been determined. 11.2 Starting Current Starting current shall be measured 515 seconds after the lamp has been energized and shall be within the limits shown on the applicable lamp data she
48、et. 12 Information for Luminaire Design 12.1 Lamp Temperatures Luminaire design shall be such that the maximum lamp temperatures given in the physical characteristics section of the relevant lamp data sheet of Part II are not exceeded. 12.2 Lamp Operating Position A luminaire shall maintain the lamp
49、 within its allowable operating position limits. ANSI C78.41-2016 Page 4 2016 National Electrical Manufacturers Association 12.3 Maximum Lamp Outlines The information in clause 6 and the maximum lamp outlines in Part III provide guidance for the designers of luminaires. For mechanical acceptance of lamps complying with this standard, a free space should be provided in the luminaires based on these maximum outlines. ANSI C78.41-2016 Page 5 2016 National Electrical Manufacturers Association Part II Lamp Data Sheets ANSI C7
