UL 294-2018 UL Standard for Safety Access Control System Units (Seventh Edition).pdf
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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 294 Access Control System Units STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHO
2、RIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Access Control System Units, UL 294 Seventh Edition, Dated January 31, 2018 Summary of Topics This is the Seventh Edition of UL 294. The following items have been incorporated into this new edition:
3、Inclusion of websites in electronic media and clarication of insulation design standards for low voltage circuits Revision to requirements for single point locking devices New Requirements for Controlled and Delayed Egress Equipment and Systems Operation Addition of requirements for nonrechargeable
4、dry-cell batteries, lithium batteries and rechargeable storage-type batteries Creation of new Appendix B to address requirements for Power Over Ethernet (PoE) Power Sources for Access Control Systems and Equipment (derived from UL 294B) The requirements are substantially in accordance with Proposal(
5、s) on this subject dated August 4, 2017 and November 3, 2017. 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. UL pro
6、vides 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, including loss
7、 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 paid for
8、 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 error
9、or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. JANUARY 31, 2018 UL 294 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31, 2018 UL 294 tr2 No Text on This PageUL COPYRI
10、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31, 2018 1 UL 294 Standard for Access Control System Units First Edition May, 1974 Second Edition September, 1980 Third Edition January, 1987 Fourth Edition June, 1994 Fifth Edition January, 199
11、9 Sixth Edition May, 2013 Seventh Edition January 31, 2018 This ANSI/UL Standard for Safety consists of the Seventh Edition. The most recent designation of ANSI/UL 294 as an American National Standard (ANSI) occurred on January 31, 2018. ANSI approval for a standard does not include the Cover Page,
12、Transmittal Pages, and Title Page. 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 System (CSDS) at https:/. ULs Standards for Safety are copyri
13、ghted 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. COPYRIGHT 2018 UNDERWRITERS LABORATORIES INC. ANSI/UL 294-2018U
14、L COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31, 2018 ACCESS CONTROL SYSTEM UNITS - UL 294 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS IN
15、TRODUCTION 1 Scope .8 2 General information .8 3 Components9 4 Units of Measurement .9 5 Undated References 9 6 Terminology .10 7 Glossary 10 8 Performance Level Denitions for Access Control15 9 Information Required for Assessment 16 10 Version Number 16 CONSTRUCTION ASSEMBLY 11 General16 11.1 Speci
16、c product requirements16 11.2 Product assembly 17 11.3 Electrical protection.17 12 Protection of Service Personnel 20 13 Enclosure 20 13.1 General .20 13.2 Doors and covers 22 13.3 Enclosure openings general .22 13.4 Enclosure top openings .23 13.5 Enclosure side openings 23 13.6 Enclosure bottom op
17、enings 26 13.7 Screens and expanded metal 27 13.8 Cast metal.28 13.9 Sheet metal .28 13.10 Product enclosure mounting 31 13.11 Polymeric materials31 14 Electric Shock 32 15 Corrosion Protection 32 FIELD WIRING CONNECTIONS 16 General33 17 Cord Connected Products .33 18 Permanently Connected Products.
18、34 18.1 General .34 18.2 Power Limited/Class 2 or 3 circuits .35 18.3 Field-wiring terminals .35 18.4 Qualied application 37 18.5 Field wiring leads.38 18.6 Polarity identication 39 19 Grounding .39 JANUARY 31, 2018 ACCESS CONTROL SYSTEM UNITS - UL 294 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR
19、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTERNAL WIRING 20 General40 21 Bonding for Grounding 41 COMPONENTS, ELECTRICAL 22 Mounting of Components 44 23 Insulating Materials .45 24 Fuseholders and Current-Carrying Parts .46 25 Overcurrent Protection 46 26 Semiconductors 46 27 Swi
20、tches.46 28 Transformers and Coils46 29 Rechargeable Storage-Type Batteries Used as a Secondary Power Source .47 30 Nonrechargeable (Primary) Dry-Cell Batteries 47 31 Lithium Batteries48 SPACINGS 32 General48 33 Components .50 PERFORMANCE ALL UNITS 34 General50 34.1 General information.50 34.2 Singl
21、e point locking devices .51 34.3 Test units and data .51 34.4 Test samples and miscellaneous data 51 34.5 Test voltages 52 34.6 Essential computer equipment .52 34.7 Power over communications cable equipment .54 35 Normal Operation Test 56 36 Electronic Authentication.57 37 Input Measurement Test .5
22、8 38 Output Measurement Test .58 39 Power-Limited/Class 2 and Class 3 Circuits Test .59 39.1 General .59 39.2 Maximum voltage 61 39.3 Maximum current.61 39.4 VA max (not inherently limited circuits only) .62 40 Electrical Supervision Test .62 40.1 General .62 40.2 Power interruption 63 41 Standby Po
23、wer .63 42 Undervoltage Operation Test .63 43 Overvoltage Operation Test 64 44 Variable Ambient Test .64 45 Humidity Test 64 46 Leakage Current Test for Cord-Connected Products 64 47 Electric Shock Current Test 68 48 Overload Test 72 JANUARY 31, 2018 ACCESS CONTROL SYSTEM UNITS - UL 294 4UL COPYRIGH
24、TED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 48.1 General .72 48.2 Separately energized circuits 72 49 Endurance Test 73 49.1 General .73 49.2 Separately energized circuits 73 50 Jarring Test 74 51 Dielectric Voltage-Withstand Test .76 52 Temperatur
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