1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 568 Nonmetallic Cable Tray SystemsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Nonmetallic Cable Tray Systems, UL 568 First Edition, Dated October 15, 2002 Summary of Topics This revision of ANSI/UL 568 is being issued to reaffirm approval as an American National Standard. No changes in require
3、ments are involved. As noted in the Commitment for Amendments statement located on the back side of the title page, UL and CSA are committed to updating this harmonized standard jointly. However, the revision pages dated May 30, 2014 will not be jointly issued by UL and CSA as these revision pages o
4、nly address UL ANSI approval dates. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The revisions are substantially in accordance with Proposal(s) on this subject dated January 31, 2014. All rights reserved. No pa
5、rt 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 provides this Standard as is without warranty of any kind, either expressed or implied, inc
6、luding 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 of prots, lost savings, loss of data, or any other damages arising out of the use of or
7、 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 this Standard, regardless of the form of the claim. Users of the electronic versions of
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9、ers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the preface. The prior text for requirements that have been revised and that have a futu
10、re effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MAY 30, 2014 UL 568 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 30, 2014 UL 568 tr2 No Text on This PageUL COPYRIGHTED MATERIA
11、L NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Nonmetallic Cable Tray Systems October 15, 2002 (Title Page Reprinted: May 30, 2014) CSA Group CAN/CSA C22.2 No. 126.2-02 First Edition Approved by Underwriters Laboratories Inc. UL 568 First Edition ANSI/UL 568-200
12、4 (R2014)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments These procedures are issued jointly by the Canadian Standards Association (operating as “CSA Group”) and Underwriters Laboratories Inc. (UL). Comments or prop
13、osals for revisions on any part of the standard may be submitted to CSA Group or UL at anytime. Revisions to this standard will be made only after processing according to the standards development procedures of CSA Group and UL. CSA Group and UL will issue revisions to this standard by means of a ne
14、w edition or revised or additional pages bearing their date of issue. ISBN 1-55324-855-4 Copyright 2002 CSA Group All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. Copyright 2014 Underwriters Laboratories Inc.UL C
15、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .4 Foreword (CSA) .6 Foreword (UL) 8 1 Scope .9 2 Denitions and abbreviations .9 2.1 Denitions .9 2.2 Abbreviations .10 3 General .11 3.1 Reference publications .11 3.2 Units of me
16、asurement 12 4 Construction .13 4.1 Materials .13 4.2 Typical dimensions 13 4.3 Quality of work 15 4.4 Fittings .16 4.5 Fasteners 16 4.6 Load capacity .16 5 Tests .17 5.1 Visual defects (pultruded reinforced thermosetting resins) 17 5.2 Water absorption 17 5.3 Dielectric strength .17 5.4 Weathering
17、.17 5.5 Chemical resistance .18 5.6 Combustibility of cable tray assemblies 18 5.7 Flame spread .18 5.8 Load testing 18 5.9 Rung load capacity (optional) .22 6 Markings and product information 23 6.1 Marking on product 23 6.2 Product information 24 6.3 Cable tray installation 24 Tables 25 Figures .2
18、7 Annex A (Informative) A.1 Deection test A1 Annex B (Informative) B.1 French translations B1 OCTOBER 15, 2002 CSA C22.2 NO. 126.2-02 UL 568 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the harmonized UL and CSA Standard
19、for Nonmetallic Cable Tray Systems. It is the rst edition of CSA C22.2 No. 126.2 and the rst edition of UL 568. This harmonized standard was prepared by the CANENA Technical Harmonization Committee for Nonmetallic Cable Tray Systems, which comprises members from Underwriters Laboratories, the Canadi
20、an Standards Association, and the cable tray manufacturing industry. The efforts of the CANENA Technical Harmonization Committee are gratefully acknowledged. This standard was reviewed by the CSA Subcommittee on C22.2 No. 126, under the jurisdiction of the Technical Committee on Wiring Products and
21、the Strategic Resource Group, and has been formally approved by the Technical Committee. The requirements of CSA Standard C22.2 No. 126, published in 1991, are superseded by this standard for products covered in this standard as indicated in the scope of this standard. Where reference is made to a s
22、pecic number of samples to be tested, the specied number is considered to be a minimum quantity. This Standard is subject to periodic review, and suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to i
23、nquirescsagroup.org and include Proposal for change in the subject line: Standard designation (number); relevant clause, table, and/or gure number; wording of the proposed change; and rationale for the change. To purchase CSA Group Standards and related publications, visit CSA Groups Online Store at
24、 shop.csa.ca or call toll-free 1-800-463-6727 or 416-747-4044. This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered i
25、n any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. The most recent designation of ANSI/UL 568 as a Reaffirmed American National Standard (ANS) occurred on May 29, 2014. This ANSI/UL Standard for Saf
26、ety consists of the rst edition including revisions through May 30, 2014. 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.
27、Proposals 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. Note: Although the intended primary application of this standard is stated in its s
28、cope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. MAY 30, 2014 CSA C22.2 NO. 126.2-02 UL 568 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL
29、Level of Harmonization This standard uses an IEC format, but is not based on, nor is it to be considered equivalent to, an IEC standard. This standard is published as an equivalent standard for CSA and UL. An equivalent standard is a standard that is substantially the same in technical content, exce
30、pt as follows. Technical deviations are allowed for codes and governmental regulations and those recognized as being in accordance with NAFTA Article 905, for example, because of fundamental, climatic, geographical, technological, or infrastructural factors, scientic justication, or the level of pro
31、tection that the country considers appropriate. Presentation is to be word for word except for editorial changes. Reasons for Differences to IEC The Technical Harmonization Committee identied one IEC Standard that addresses electrical cable tray systems included in the scope of this standard. The TH
32、C determined that the safe use of electrical cable tray is dependent on the design, performance, and installation of the cable tray system. Signicant investigation is required to assess safety and system issues that may lead to harmonization of traditional North American electrical cable tray standa
33、rds with those presently addressed in the known IEC standard. The THC agreed such future investigation might be facilitated by completion of harmonization of the North American standards for electrical cable tray. Interpretations The interpretation by the Standards Development Organization (SDO) of
34、an identical or equivalent standard is to be based on the literal text to determine compliance with the standard in accordance with the procedural rules of the SDO. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the
35、SDOs to more accurately reect the intent. MAY 30, 2014 CSA C22.2 NO. 126.2-02 UL 568 4AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 28, 2005 CSA C22.2 NO. 126.2-02 UL 568 4B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZ
36、ED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Effective Date As of October 15, 2004, all products Listed or Recognized by UL must comply with the requirements in this standard. CSA Effective Date The effective date for CSA will be announced through CSA Informs or a CSA Ce
37、rtication Notice. OCTOBER 15, 2002 CSA C22.2 NO. 126.2-02 UL 568 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Foreword (CSA) The Canadian Standards Association (CSA) develops standards under the name Canadian Standards Association, and p
38、rovides certication and testing under the name CSA International. CSA International provides certication services for manufacturers who, under license from CSA, wish to use the appropriate registered CSA Marks on certain products of their manufacture to indicate conformity with CSA Standards. CSA Ce
39、rtication for a number of products is provided in the interest of maintaining agreed-upon standards of quality, performance, interchangeability and/or safety, as appropriate. Where applicable, certication may form the basis for acceptance by inspection authorities responsible for enforcement of regu
40、lations. Where feasible, programs will be developed for additional products for which certication is desired by producers, consumers, or other interests. In performing its functions in accordance with its objectives, CSA does not assume or undertake to discharge any responsibility of the manufacture
41、r or any other party. The opinions and ndings of the Association represent its professional judgement given with due consideration to the necessary limitations of practical operation and state of the art at the time the Standard is processed. Products in substantial accord with this Standard but whi
42、ch exhibit a minor difference or a new feature may be deemed to meet the Standard providing the feature or difference is found acceptable utilizing appropriate CSA International Operating Procedures. Products that comply with this Standard shall not be certied if they are found to have additional fe
43、atures which are inconsistent with the intent of this Standard. Products shall not be certiable if they are discovered to contravene applicable laws or regulations. Testing techniques, test procedures, and instrumentation frequently must be prescribed by CSA International in addition to the technica
44、l requirements contained in Standards of CSA. In addition to markings specied in the Standard, CSA International may require special cautions, markings, and instructions that are not specied by the Standard. Some tests required by CSA Standards may be inherently hazardous. The Association neither as
45、sumes nor accepts any responsibility for any injury or damage that may occur during or as the result of tests, wherever performed, whether performed in whole or in part by the manufacturer or the Association, and whether or not any equipment, facility, or personnel for or in connection with the test
46、 is furnished by the manufacturer or the Association. Manufacturers should note that, in the event of the failure of CSA International to resolve an issue arising from the interpretation of requirements, there is an appeal procedure: the complainant should submit the matter, in writing, to the Secre
47、tary of the Canadian Standards Association. If this Standard is to be used in obtaining CSA Certication please remember, when making application for certication, to request all current Amendments, Bulletins, Notices, and Technical Information Letters that may be applicable and for which there may be
48、 a nominal charge. For such information or for further information concerning CSA Certication, please address your inquiry to Applications and Customer Service, CSA International, 178 Rexdale Boulevard, Toronto, Ontario, Canada M9W 1R3. OCTOBER 15, 2002 CSA C22.2 NO. 126.2-02 UL 568 6UL COPYRIGHTED
49、MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 15, 2002 CSA C22.2 NO. 126.2-02 UL 568 7 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Foreword (UL) A. This Standard contains basic requirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the limi
