1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2577 Suspended Ceiling Grid Low Voltage Systems and EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL
2、 NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Suspended Ceiling Grid Low Voltage Systems and Equipment, UL 2577 First Edition, Dated February 7, 2013 Summary of Topics The following changes in requirements to the Joint UL/ULC Standard
3、for Suspended Ceiling Grid Low Voltage Systems and Equipment, UL 2577/ULC-S2577, are being issued for the United States and Canada: Correct inconsistency in reference to Canadian Electrical Code, Part I, in paragraph 37.3.1 Text that has been changed in any manner or impacted by ULs electronic publi
4、shing system is marked with a vertical line in the margin. The revised requirements are substantially in accordance with Proposal(s) on this subject dated March 27, 2015. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by a
5、ny means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. 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 ev
6、ent will UL be liable for any special, incidental, consequential, indirect or similar damages, including 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
7、the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid 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, e
8、xpense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. NOVEMBER 13, 2015 UL 2577 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER RE
9、PRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 13, 2015 UL 2577 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Prepared by: ULC Standards CAN/ULC-S2577 First Edition Underwriters Laboratories Inc. ANS
10、I/UL 2577 First Edition Suspended Ceiling Grid Low Voltage Systems and Equipment February 7, 2013 (Title Page Reprinted: November 13, 2015) ANSI/UL 2577-2015 Approved byUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendment
11、s This Standard is issued jointly by Underwriters Laboratories Inc. (UL) and ULC Standards. Amendments to this Standard will be made only after processing according to the Standards writing procedures by UL and ULC Standards. UL and ULC Standards are separate and independent entities and each is sol
12、ely responsible for its operations and business activities. The UL trade names and trademarks depicted in this document are the sole property of Underwriters Laboratories Inc. The ULC Standards trade names and trademarks depicted in this document are the sole property of ULC Standards. ISSN 0317-526
13、X Copyright 2015 ULC Standards All rights reserved. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, whatsoever without the prior permission of the publisher. In Canada, written comments are to be sent to ULC Standards, 400 171 Nepean Street,
14、 Ottawa, Ontario KP2 0B4. Proposals should be submitted on a Standards Revision Request Form available from ULC Standards. Copyright 2015 Underwriters Laboratories Inc. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. A
15、ll of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. This ANSI/UL Standard for Safety consists of the First Edition including revisions through November 13, 2015. The most recent designation of ANSI/UL 2577 as an
16、 American National Standard (ANSI) occurred on November 13, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposal
17、s should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. To purchase UL Standards, visit Comm 2000 at http:/m- or call toll-free 1-888-853-3503.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM
18、ISSION FROM UL CONTENTS Preface .5 INTRODUCTION 1 Scope .6 2 Components .7 3 Units of Measurement .8 4 Undated References 8 5 Glossary .8 MECHANICAL CONSTRUCTION 6 General 9 7 Assembly and Mounting .9 8 Metal Components 9 9 Polymeric Enclosure and Insulation Materials .10 9.1 General .10 9.2 Flammab
19、ility 10 9.3 Relative Thermal Index (RTI) .11 9.4 Electrical properties 11 10 System Flammability .11 11 Adhesives 11 12 Strain Relief 12 ELECTRICAL CONSTRUCTION 13 General .12 14 Current-Carrying Parts .13 15 Securement of Components 13 16 Splices and Connections .14 17 Electrical Spacings 15 18 Cl
20、ass 2 Power Supplies and Transformers .15 19 Luminaires 16 20 Switches and Controls .16 21 Control Circuits 17 22 Class 2 Supply and Load Connectors 18 22.1 General .18 22.2 Power feed connector .18 22.3 Load connectors 19 23 Field Wiring 19 23.1 Field wiring terminals .19 23.2 Separation for CEC/NE
21、C Class 2 circuits .20 PERFORMANCE 24 Connector Tests 21 24.1 General .21 24.2 Movable connector cycle conditioning and temperature test 21 24.3 Field-installed conductors conditioning and temperature test 22 24.4 Fixed connector cycling test 22 FEBRUARY 7, 2013 CAN/ULC-S2577 ANSI/UL 2577 3UL COPYRI
22、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 25 System Temperature Test .22 25.1 General .22 25.2 Test setup grid rail system .24 25.3 Test setup power supplies and low voltage equipment 24 26 Mechanical Assembly Load Test 24 27 Moment Test .24 28
23、 System Flammability Test Grid Rails 25 29 System Flammability Test Discrete Components Located In Air-Handling Spaces .26 30 Mold Stress-Relief Distortion Test .27 31 Connector Drop Test 27 32 Field Cutting Test .28 33 Conductor Secureness Test 28 34 Strain Relief Test .29 35 Push-Back Relief Test
24、for Conductors or Cable 29 36 Dielectric Voltage Withstand Test .30 MARKINGS 37 Details .31 37.1 General .31 37.2 Connectors 32 37.3 Air-handling use 33 37.4 Correlation markings 34 38 Installation and Operating Instructions .34 38.1 General .34 38.2 Operating instructions .37 38.3 Connectors 38 TAB
25、LES FIGURES ANNEX A (NORMATIVE) Reference Standards Standards for Components ANNEX B (NORMATIVE) Reference Publications NOVEMBER 13, 2015 CAN/ULC-S2577 ANSI/UL 2577 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the common
26、UL and ULC Standard for Suspended Ceiling Grid Low Voltage Systems and Equipment. It is the First edition of both CAN/ULC-S2577 and ANSI/UL 2577. This Joint Standard was prepared by Underwriters Laboratories Inc., ULC Standards, and the Technical Committee on Solid State Lighting (TCSSL). The standa
27、rd was formally approved by the UL/ULC Technical Committee on Solid State Lighting (TCSSL). The efforts and support of the Technical Committee are gratefully acknowledged. Only metric SI units of measurement are used in this Standard. If a value for measurement is followed by a value in other units
28、in parentheses, the second value may be approximate. The rst stated value is the requirement. In Canada, there are two official languages, English and French. All safety warnings must be in French and English. Attention is drawn to the possibility that some Canadian authorities may require additiona
29、l markings and/or installation instructions to be in both official languages. Annexes A and B, both identifed as normative, form a mandatory part of this Standard. Note: Although the intended primary application of this Standard is stated in its scope, it is important to note that it remains the res
30、ponsibility of the users of the standard to judge its suitability for their particular purpose. Level of Harmonization This Standard is published as an identical standard between UL and ULC Standards. An identical standard is a standard that is the same in technical content except for conicts in Cod
31、es and Governmental Regulations. Presentation shall be word for word except for editorial changes. Interpretations The interpretation by the SDO of an identical or equivalent standard shall be based on the literal text to determine compliance with the standard in accordance with the procedural rules
32、 of the SDO. If more than one interpretation of the literal text has been identied, a revision shall be proposed as soon as possible to each of the SDOs to more accurately reect the intent. NOVEMBER 13, 2015 CAN/ULC-S2577 ANSI/UL 2577 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION
33、OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover suspended ceiling grid low voltage systems and equipment intended for installation and use in accordance with the: In Canada: Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, C
34、SA C22.1, In the United States: National Electrical Code (NEC), ANSI/NFPA 70. 1.2 The suspended ceiling grid low voltage systems covered by this standard are intended to be installed as a suspended ceiling grid that provides mechanical support for the ceiling tiles and provides electrical connection
35、s between the low voltage power supply and the low voltage equipment. The low voltage system consists of the following components: a) An isolating type low voltage power supply with output(s) operating at 30 V (42.4 V peak) or less and not exceeding Class 2 power limits, b) A grid rail power distrib
36、ution system to provide power from the Class 2 power supply to one or more pieces of Class 2 powered equipment, and c) Class 2 powered equipment that is electrically connected to the suspended ceiling grid low voltage system. 1.3 The suspended ceiling grid low voltage system is intended to be perman
37、ently connected, for indoor dry locations, and installed in accordance with the following requirements: In Canada: Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, CSA C22.1, and the National Building Code of Canada. In the United States: National Electrical Code (NEC)
38、, ANSI/NFPA 70, the International Building Code (IBC), and the International Mechanical Code (IMC). This standard also covers suspended ceiling grid low voltage systems intended for use in air-handling spaces. FEBRUARY 7, 2013 CAN/ULC-S2577 ANSI/UL 2577 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU
39、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.4 This standard does not address any supplemental or alternative requirements for suspended ceiling grid low voltage systems intended for use in: In Canada: a) Hazardous locations as specied in the Canadian Electrical Code, Part I, Safe
40、ty Standard for Electrical Installations, CSA C22.1; b) General patient care areas or critical patient care areas as dened by Section 24 of the Canadian Electrical Code, Part I, Safety Standard for Electrical Installations, CSA C22.1; or c) Emergency systems as dened by Section 46 of the Canadian El
41、ectrical Code, Part I, Safety Standard for Electrical Installations, CSA C22.1. In the United States: a) Hazardous locations as specied in the National Electrical Code (NEC), ANSI/NFPA 70; b) General patient care areas or critical patient care areas as dened by Article 517 of the National Electrical
42、 Code (NEC), ANSI/NFPA 70; or c) Emergency systems as dened by Article 700 of the National Electrical Code (NEC), ANSI/NFPA 70. 1.5 This standard does not evaluate the suspended ceiling grid low voltage system for seismic requirements in accordance with the: In Canada: National Building Code of Cana
43、da. In the United States: International Building Code (IBC). 1.6 This standard does not evaluate the suspended ceiling grid low voltage systems for re resistance. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for tha
44、t component. See Annex A for a list of standards covering components used in the products covered by this standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covere
45、d by this standard, or b) Is superseded by a requirement in this standard. FEBRUARY 7, 2013 CAN/ULC-S2577 ANSI/UL 2577 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.3 A component shall be used in accordance with its rating established f
46、or the intended conditions of use. 2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under thos
47、e specic conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square (rms). 4 Undated Ref
48、erences 4.1 See Annex B for a list of publications referenced in this standard. Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of this standard
49、, the following denitions shall apply. 5.2 BUS BAR A non-insulated conductor electrically connected to the source of supply and physically supported by an insulator. The bus bar provides a power rail for connection of the low voltage equipment. 5.3 BUS BAR SUPPORT An insulator that runs the length of a section of suspended ceiling grid bus rail and serves to support the bus bars and to isolate them from the suspended grid rail. 5.4 CONNECTOR A generic
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