UL 924-2016 UL Standard for Safety Emergency Lighting and Power Equipment (Tenth Edition Reprint with Revisions Through and Including May 1 2018).pdf

《UL 924-2016 UL Standard for Safety Emergency Lighting and Power Equipment (Tenth Edition Reprint with Revisions Through and Including May 1 2018).pdf》由会员分享，可在线阅读，更多相关《UL 924-2016 UL Standard for Safety Emergency Lighting and Power Equipment (Tenth Edition Reprint with Revisions Through and Including May 1 2018).pdf（175页珍藏版）》请在麦多课文档分享上搜索。

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 924 Emergency Lighting and Power Equipment STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIA

2、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Emergency Lighting and Power Equipment, UL 924 Tenth Edition, Dated May 9, 2016 Summary of Topics ANSI/UL 924 is being issued as an editorial new edition. Updates made to the standard are

3、considered to be non-substantive and not subject to ULs STP process. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL.

4、 UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, includi

5、ng loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price p

6、aid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any

7、 error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MAY 9, 2016 UL 924 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 9, 2016 UL 924 tr2 No Text on This PageUL COPYRIGHT

8、ED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 9, 2016 1 UL 924 Standard for Emergency Lighting and Power Equipment The rst, second, third, and fth editions were titled Standard for Emergency Lighting Equipment. First Edition December, 1958 Second

9、Edition May, 1973 Third Edition October, 1973 Fourth Edition April, 1977 Fifth Edition February, 1979 Sixth Edition March, 1984 Seventh Edition November, 1990 Eighth Edition March, 1995 Ninth Edition February, 2006 Tenth Edition May 9, 2016 This ANSI/UL Standard for Safety consists of the Tenth Edit

10、ion. The most recent designation of ANSI/UL 924 as an American National Standard (ANSI) occurred on December 16, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. The Department of Defense (DoD) has adopted UL 924 on November 14, 1982. The publicat

11、ion of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development Sys

12、tem (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRI

13、GHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 924-2015UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR

14、ODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .9 2 References 10 3 Resistance to Environmental Conditions 10 4 Glossary 10 5 Components 15 6 Units of Measurement 17 7 Radioactive Energy Sources 17 CONSTRUCTION 8 Frame and Enclosure 17 8.1 General 17 8.2 Uninsulate

15、d live parts 17 8.3 Metallic enclosures 19 8.4 Nonmetallic enclosures .22 8.5 Enclosure openings 22 8.6 Enclosure covers 24 9 Environmental Rating .24 10 Polymeric Materials .25 10.1 General .25 10.2 Enclosures 25 10.3 Mechanical support .26 10.4 Barriers .26 10.5 Grounding or bonding means .26 10.6

16、 Structural support 27 11 Mounting Means 27 12 Corrosion Resistance .27 13 Insulation Material 28 14 Mounting of Parts .28 15 Operating Mechanisms 29 16 Current-Carrying Parts 29 17 Installation Wiring Connections .29 17.1 General .29 17.2 Terminals .30 17.3 Field-wiring leads .30 17.4 Polarity iden

17、tication 31 17.5 Termination of wiring systems .31 17.6 Knockouts .32 18 Cord-Connected Unit Equipment and Luminaires .33 18.1 General .33 18.2 Flexible cord .33 18.3 Alternative connection 34 18.4 Attachment plug 34 18.5 Grounding .34 18.6 Strain relief 34 18.7 Push-in prevention .35 18.8 Bushings

18、35 19 Internal Wiring 36 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 19.1 Wires .36 19.2 Wireways 37 19.3 Electrical connections .37 19.4 Separation of circuits .38 19.5 Conduc

19、tor secureness 39 20 Grounding .39 21 Bonding of Internal Parts 41 22 Batteries .43 23 Electronic Circuits .44 24 Capacitors .44 25 Lampholders .44 26 Overcurrent (Overload) Protection 44 27 Coil Windings 45 28 Derangement Signals .45 29 Test Switch 45 30 Self-Testing/Self-Diagnostic Equipment 46 31

20、 Disconnect Switches and Fuses 46 32 Transformers .47 33 Impedance Networks 47 34 Printed-Wiring Board 47 35 Motors .47 36 Equipment Using Simple Reactance Ballasts and Lamps Having Integral Starters 47 37 Spacings 48 37.1 General .48 37.2 Barriers .50 37.3 Insulating barriers 50 38 Field-Wiring Spa

21、ce 51 38.1 General .51 38.2 Wire-bending space 51 39 Accessibility of Insulated Current-Carrying Parts 53 39.1 General 53 39.2 Accessibility determination .53 39.3 Insulated parts .53 39.4 Accessibility barriers 55 EXIT SIGN VISIBILITY 40 Exit Sign Contruction General 55 41 Text-Based Exit Signs Con

22、struction .56 42 Graphical Symbol Exit Signs Construction .60 43 Performance .63 43.1 General .63 43.2 Observation visibility test 64 43.3 Luminance measurement test 67 43.4 Non-energized contrast measurement test .74 43.5 Flashing rate, light pulse duration, and duration between successive light pu

23、lse measurements .75 44 Markings .75 PERFORMANCE 45 General 77 46 Leakage Current Test .78 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 47 Normal Operation Test 80 48 Battery Di

24、scharge Test 81 49 Input Test 83 50 Determination of Low-Voltage, Limited-Energy Circuit Status .83 51 Determination of Limiting Impedance Circuit Status .84 52 Temperature Test .85 53 Overvoltage Withstand Test 89 54 Undervoltage Recharge Capability Test .89 55 Voltage Surge Test .90 56 Dielectric

25、Voltage-Withstand Test .93 57 Conformal Coating Test Program I 94 57.1 General .94 57.2 Coating on printed-wiring board in lieu of spacings .94 58 Conformal Coating Test Program II .94 58.1 General .94 58.2 Samples 94 58.3 Room ambient conditioning 95 58.4 Thermal conditioning 95 58.5 Dielectric vol

26、tage-withstand test for conformal coating 97 59 Strain Relief Test .97 59.1 General .97 59.2 Strain .97 60 Conductor Secureness Test 97 61 Overtinned Wire Flexibility Test .97 62 Bonding Conductor Test .98 63 Grounding Continuity Test .99 64 Security of Knockout Test 99 65 Swivel Torsion and Pull Te

27、st .99 66 Component Breakdown Test 100 66.1 General 100 66.2 General test conditions 101 67 Humidity Conditioning Test .102 68 Impact Test .102 69 Mechanical Support Static Load Test 103 70 Barrier Strength Test .104 RATINGS 71 General 104 72 Standby Operation .105 MARKINGS 73 General 105 73.1 Detai

28、ls .105 73.2 Fuse replacement .111 INSTRUCTION MANUAL 74 General 111 75 Safety Instructions .112 76 Other Instructions 113 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL LOW-FREQU

29、ENCY INVERTERS 77 General 114 78 Performance 114 78.1 Output load power factor test .114 78.2 Battery discharge test .115 78.3 Output voltage and frequency test .115 HIGH-FREQUENCY INVERTERS 79 General 115 80 Performance .115 80.1 General 115 80.2 Output voltage and current test .116 80.3 Abnormal c

30、onditions test .117 81 Marking 118 SUPPLEMENT SA - FIELD INSTALLED LUMINAIRE EMERGENCY BATTERY PACKS SA1 General SA1 SA2 Mounting and Installation .SA1 SA3 Performance SA1 SA4 Marking and Instructions SA2 SA5 Instruction Manual .SA2 SUPPLEMENT SB - EMERGENCY LIGHTING AND POWER EQUIPMENT FOR USE IN D

31、AMP LOCATIONS SB1 General SB1 SB2 Construction Mechanical SB1 SB3 Construction Electrical SB1 SB4 Performance Humidity Conditioning SB2 SB5 Markings .SB2 SUPPLEMENT SC - EMERGENCY LIGHTING AND POWER EQUIPMENT FOR USE IN WET LOCATIONS SC1 General SC1 SC2 Construction Mechanical SC1 SC2.1 Corrosion pr

32、otection .SC1 SC2.2 Enclosures .SC2 SC2.3 Gaskets and bushings .SC3 SC2.4 Openings SC3 SC2.5 Polymeric water shields SC4 SC3 Construction Electrical SC4 SC4 Performance SC5 SC4.1 General SC5 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH

33、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SC4.2 Tests required SC5 SC4.3 General test conditions SC6 SC4.4 General test results SC6 SC4.5 Sprinkler test .SC7 SC4.6 Rain test SC10 SC4.7 Thermal conditioning .SC12 SC4.8 Gasket adhesion test .SC13 SC4.9 Humidity conditioning .SC13 SC5

34、Markings SC13 SUPPLEMENT SD - ALTERNATIVE REQUIREMENTS FOR TRANSFORMERS INTRODUCTION SD1 Scope SD1 CONSTRUCTION SD2 General SD1 PERFORMANCE SD3 General SD2 SD4 Dielectric Voltage-Withstand Test SD3 SD5 Induced Potential Test .SD3 SD6 Abnormal Tests .SD4 SD6.1 General SD4 SD6.2 Transformer burnout te

35、st .SD5 SD6.3 Transformer overload test SD6 SD7 Test on Transformer Insulating Materials .SD6 SUPPLEMENT SE - EXIT SIGN RETROFIT KITS INTRODUCTION SE1 Scope SE1 SE2 Glossary SE1 SE3 Construction SE2 SE3.1 General SE2 SE3.2 Frame and enclosure SE3 SE3.3 Mounting .SE3 SE3.4 Wiring and connections SE4

36、SE3.5 Assembly SE4 SE3.6 Grounding SE5 SE3.7 Adapter SE5 SE3.8 Diffuser SE6 SE4 Performance .SE7 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SE4.1 Trial installation test .SE7

37、SE4.2 Input test .SE8 SE4.3 Temperature test SE9 SE4.4 Conductor secureness test .SE9 SE4.5 Visibility test SE9 SE4.6 Normal operation test .SE10 SE4.7 Voltage surge test SE10 SE4.8 Component breakdown test .SE10 SE4.9 Base securement test SE10 SE4.10 Base conformity test SE11 SE5 Marking .SE12 SE6

38、Instruction Manual SE15 SUPPLEMENT SF - PHOTOLUMINESCENT EXIT SIGNS SF1 General .SF1 SF2 Mechanical Construction SF1 SF3 Legend dimensions SF2 SF4 Performance SF2 SF4.1 Sample conditioning .SF2 SF4.2 Visibility tests .SF3 SF5 Markings and Installation Instructions .SF4 SUPPLEMENT SG - MINIMUM LIGHT

39、OUTPUT FOR EMERGENCY LIGHTING EQUIPMENT SG1 Introduction .SG1 SG2 Performance SG1 SG3 Marking .SG2 APPENDIX A Standards for ComponentsA1 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO

40、M UL INTRODUCTION 1 Scope 1.1 This Standard applies to emergency lighting and power equipment for use in unclassied locations and intended for connection to branch circuits of 600 volts or less. Such equipment is intended to automatically supply illumination or power or both to critical areas and eq

41、uipment in the event of failure of the normal supply, in accordance with Article 700 or 701 of the National Electrical Code, NFPA 70, the Life Safety Code, NFPA 101, the Fire Code, NFPA 1, the International Building Code, IBC, and the International Fire Code, IFC. 1.2 Examples of equipment described

42、 in 1.1 include: Exit Signs Emergency Luminaires Unit Equipment Central Station Battery Banks Inverters Automatic Battery Charging and Control Equipment Automatic Load Control Relays Derangement Signal Equipment 1.3 This Standard also applies to auxiliary lighting and power equipment for use in uncl

43、assied locations. Auxiliary equipment has not been investigated to determine compliance with the performance requirements of Article 700 or 701 of the National Electrical Code, NFPA 70, the Life Safety Code, NFPA 101, or the International Building Code. Such equipment includes luminaires with an int

44、egral battery backup power supply, illuminated directional signs, battery assemblies, and related devices. 1.4 This Standard does not include requirements for equipment covered by other Standards, such as: Luminaires, UL 1598 Uninterruptible Power Systems, UL 1778 Luminous Egress Path Marking System

45、s, UL 1994 Transfer Switch Equipment, UL 1008 Electric Signs, UL 48 MAY 9, 2016 EMERGENCY LIGHTING AND POWER EQUIPMENT - UL 924 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 References 2.1 Any undated reference to a code or a standard a

46、ppearing in the requirements in this standard shall be interpreted as referring to the latest edition of that code or standard. 3 Resistance to Environmental Conditions 3.1 Equipment marked with an enclosure type number, such as 4X, shall comply with the following: a) The enclosure shall comply with

47、 the applicable requirements specied in the Standard for Enclosures for Electrical Equipment, UL 50, and b) The equipment shall comply with the requirements in this standard for use in the environment indicated by the enclosure type designation. 4 Glossary 4.1 For the purpose of this standard the fo

48、llowing denitions apply. 4.2 AUTOMATIC BATTERY CHARGING EQUIPMENT Equipment provided to maintain the central storage battery bank in a charged condition at all times when the normal supply is available. 4.3 AUTOMATIC LOAD CONTROL RELAY A separate or integral device intended to energize, to appropria

49、te power or illumination levels, switched or normally off emergency equipment from an emergency supply in the event of failure of the normal supply, and to de-energize or return the equipment to normal status when the normal supply is restored. These devices are not transfer switches, but instead transmit power only from a single upstream source (typically, the emergency source) to specic loads. They connect to a second (typically, the normal) source of power only for monitoring purpo