1、NEMA Standards PublicationNational Electrical Manufacturers AssociationANSI C136.31-2010 Roadway and AreaLighting Equipment Luminaire VibrationANSI C136.31-2010 American National Standard for Roadway and Area Lighting Equipment Luminaire Vibration Secretariat: National Electrical Manufacturers Assoc
2、iation Approved January 4, 2011 American National Standards Institute, Inc. ANSI C136.31-2010 NOTICE AND DISCLAIMER The information in this publication was considered technically sound by the consensus of persons engaged in the development and approval of the document at the time it was developed. C
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17、American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. Published by National Electrical Manufacturers Association 1300 North 17th Street, Rosslyn, VA 22209 Copyright 2010 by National Electrical Manufacturers Assoc
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19、d in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. Printed in the United States of America i ANSI C136.31-2010 This page intentionally left blank. ii ANSI C136.31-2010 CONTENTS 1 Scope .1 2 References .1 3 Definitions.1 3.1 Fundament
20、al Resonant Frequency1 3.2 Luminaire .1 4 Types of Vibration.1 4.1 Wind Induced Vibration1 4.2 Traffic Induced Vibration 1 5 Luminaire Vibration Test 2 iii ANSI C136.31-2010 This page intentionally left blank. iv AMERICAN NATIONAL STANDARD ANSI C136.31-2010 For Roadway and Area Lighting Equipment Lu
21、minaire Vibration 1 Scope This standard covers the minimum vibration withstand capability and vibration test methods for roadway and area luminaires. 2 References This standard is intended for use in conjunction with the following standards. When these standards are superseded by an approved revisio
22、n, the latest revision shall apply. ANSI C136.3 American National Standard for Roadway and Area Lighting EquipmentLuminaire Attachments ANSI C136.14 American National Standard for Roadway and Area Lighting EquipmentElliptically Shaped, Enclosed Side-Mounted Luminaires for Horizontal-Burning High-Int
23、ensity-Discharge Lamps ANSI C136.16 American National Standard for Roadway and Area Lighting EquipmentEnclosed, Post TopMounted Luminaires ANSI C136.18 American National Standard for Roadway and Area Lighting EquipmentHigh-Mast Side-Mounted Luminaires for Horizontal- or Vertical-Burning High-Intensi
24、ty Discharge Lamps 3 Definitions 3.1 Fundamental Resonant Frequency The lowest resonant frequency where the response is in phase with the excitation. 3.2 Luminaire A complete lighting unit consisting of a lamp or lamps, or solid state light source, together with the parts designed to distribute the
25、light, to position and protect the lamp(s), and to connect the lamp(s) to the power supply. 4 Types of Vibration Roadway luminaires may experience several types of externally induced vibration. This standard is not intended to cover natural or catastrophic disasters. 4.1 Wind Induced Vibration Wind
26、can induce vibration in lighting systems that consist of luminaire, arm, and pole assemblies. The magnitude of this type of vibration is mostly a function of the size, shape, and rigidity of the luminaire and pole system and damping of the system. 4.2 Traffic Induced Vibration Traffic induced vibrat
27、ion can be transferred to the luminaire system from a roadway, bridge, or overpass, being generated by the passage of vehicles. A similar type of vibration can occur in areas near heavy dynamic equipment. 1 ANSI C136.31-2010 5 Luminaire Vibration Test The luminaire vibration test is designed to dete
28、rmine whether the luminaire is able to withstand vibration conditions that may be encountered in normal installations. The test is a mechanical performance evaluation. Therefore, the luminaire is not normally energized during the test. A lamp shall be installed in the luminaire for this test. The te
29、st criteria were developed with consideration to the effect of wind and traffic induced vibration. The luminaire shall be attached as it would be mounted in the field to a vibration table capable of withstanding the loads and forces encountered during the test and tested in a manner to simulate a no
30、rmal installation. The luminaire shall be vibrated at or near fundamental resonant frequency. This frequency shall be determined for each of the three mutually perpendicular planes (x, y, and z) and should be between 2 and 30 hertz. The acceleration intensity measured at the luminaires center of gra
31、vity shall be as specified in the corresponding levels as shown below. Level 1 should be used for normal roadway applications. Level 2 should be used for bridge and overpass applications. If the luminaire housing utilizes several different materials in its construction, the worst case criteria from
32、the tables shall be used in the testing. During the vibration test, the frequency and displacement should be monitored. A major change in frequency or displacement is an indication of structural failure. The luminaire shall be capable of withstanding the described vibration for 100,000 cycles in eac
33、h plane. A separate sample luminaire may be used for each plane to eliminate the effect of conjunctive material fatigue. Other test amplitudes and durations may be negotiated between the specifier and supplier as needed to simulate extreme fatigue. At the test conclusion, the luminaire shall meet it
34、s original specification. There shall be no damage to the enclosure, reduction of electrical spacings, or loosening of any part of the luminaire. If the light source is integral to the luminaire, it shall be fully operational at test completion. Vibration Test Level 1Normal Applications All material
35、s shall be 1.5 G (14.67 m/s2) Vibration Test Level 2Bridge/Overpass Applications All materials shall be 3.0 G (29.4 m/s2) 2 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
