ANSI UL 60950-23-2007 UL Standard for Safety Information Technology Equipment - Safety - Part 23 Large Data Storage Equipment (First Edition Reprint with revisions through and incl.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60950-23 Information Technology Equipment Safety Part 23: Large Data Storage EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM

2、ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Information Technology Equipment Safety Part 23: Large Data Storage Equipment, UL 60950-23 First Edition, Dated April 23, 2007 Summary of Topics This revision of ANSI/UL 60950

3、-23 is being issued to reaffirm approval as an American National Standard. No changes in requirements 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 revis

4、ion pages dated January 31, 2012 will not be jointly issued by UL and CSA as these revision pages only address UL ANSI approval dates. UL 60950-23 is an adoption of IEC 60950-23, Information Technology Equipment Safety Part 23: Large Data Storage Equipment (First Edition, issued September 2005). Tex

5、t that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated October 28, 2011. All rights reserved. No part of this publicati

6、on 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, including but not limit

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10、 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 future effective date ar

11、e located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 31, 2012 UL 60950-23 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 31, 2012 UL 60950-23 tr2 No Text on This PageUL COPYRIGHTED MATERIAL

12、NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Information Technology Equipment Safety Part 23: Large Data Storage Equipment April 23, 2007 (Title page reprinted: January 31, 2012) This national standard is based on publication IEC 60950-23, First Edition (2005).

13、Canadian Standards Association CAN/CSA-C22.2 No. 60950-23-07 First Edition (IEC 60950-23: 2005, MOD) Underwriters Laboratories Inc. UL 60950-23 First Edition ANSI/UL 60950-23-2007 (R2012)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commit

14、ment for Amendments This standard is issued jointly by the Canadian Standards Association (CSA) and Underwriters Laboratories Inc. (UL). Comments or proposals for revisions on any part of the standard may be submitted to CSA or UL at any time. Revisions to this standard will be made only after proce

15、ssing according to the standards development procedures of CSA and UL. CSA and UL will issue revisions to this standard by means of a new edition or revised or additional pages bearing their date of issue. _ CSA Standards are subject to periodic review, and suggestions for their improvement will be

16、referred to the appropriate committee. To submit a proposal for change to CSA Standards, please send the following information to inquirescsa.ca and include Proposal for change in the subject line: Standard designation (number); relevant clause, table, and/or gure number; wording of the proposed cha

17、nge; and rationale for the change. To purchase CSA Standards and related publications, visit CSAs Online Store at www.ShopCSA.ca or call toll-free 1-800-463-6727 or 416-747-4044. _ ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered i

18、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. This ANSI/UL Standard for Safety consists of the First Edition including revisions through January 31, 2012. The most recent designation of ANSI/UL

19、 60950-23 as a Reaffirmed American National Standard (ANS) occurred on January 31, 2012. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page (front and back), or the Preface. The National Difference Page and IEC Foreword are also excluded from the ANSI approva

20、l of IEC-based standards. 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 http:/. To purchase UL Standards, visit Comm 2000 at

21、http:/m- or call toll-free 1-888-853-3503. ISBN 1-55436-414-0 Copyright 2007 Canadian Standards Association All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission of the publisher. Copyright 2012 Underwriters Laboratories Inc.UL COPYRIG

22、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS PREFACE 4 FOREWORD .7 1 Scope .9 2 Normative references .9 3 Terms and denitions 10 4 Protection of persons in the work cell 10 5 Interlock override 11 5.1 General 11 5.2 Visual indicator .11 6

23、Emergency stop system 12 7 Endurance tests .13 8 Abnormal operation 14 Annex A (informative) Bibliography Annex NAE (informative) U.S. and Canadian regulatory requirements APRIL 23, 2007 CAN/CSA-C22.2 NO. 60950-23-07 UL 60950-23 3 DE D1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION

24、OR DISTRIBUTION WITHOUT PERMISSION FROM UL PREFACE This is the common CSA and UL Standard for Information Technology Equipment Safety Part 23: Large Data Storage Equipment. It is the rst edition of CAN/CSA-C22.2 No. 60950-23 and the rst edition of UL 60950-23. This standard is based on IEC 60950-23,

25、 rst edition. This common standard was prepared by the Canadian Standards Association (CSA) and Underwriters Laboratories Inc. (UL). The efforts and support of representatives of leading industry companies and organizations are gratefully acknowledged. This Standard is considered suitable for use fo

26、r conformity assessment within the stated scope of the Standard. This Standard was reviewed by the CSA Subcommittee on Safety of Electronic Equipment within the Field of Audio/Video, Information, and Communication Technology, under the jurisdiction of the CSA Technical Committee on Consumer and Comm

27、ercial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This Standard has been approved as a National Standard of Canada by the Standards Council of Canada. This Standard has been approved by the A

28、merican National Standards Institute (ANSI) as an American National Standard. Note: Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular

29、 purpose. Level of harmonization This standard adopts the IEC text with national differences. 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, except as follows: Technical national differenc

30、es are allowed for codes and governmental regulations as well as 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 protection that the country co

31、nsiders appropriate. Presentation is word for word except for editorial changes. All national differences from the IEC text are included in the CSA and UL versions of the standard. While the technical content is the same in each organizations version, the format and presentation may differ. Reasons

32、for differences from IEC The national differences in this binational Part 23 Standard are included to reference the binational version of IEC 60950-1, which is designated as CAN/CSA-C22.2 No. 60950-1/UL 60950-1, to address issues related to references to the rst and second editions of CSA/UL 60950-1

33、, and to address additional requirements for switches (Clause 6) and U.S. and Canadian regulatory requirements (Annex NAE). APRIL 23, 2007 CAN/CSA-C22.2 NO. 60950-23-07 UL 60950-23 4 DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DEUL C

34、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Interpretations The interpretation by the standards development organization of an identical or equivalent standard is based on the literal text to determine compliance with the standard in accorda

35、nce with the procedural rules of the standards development organization. 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 standards development organizations to more accurately reect the intent. CSA effective date

36、The effective date for CSA International will be announced through CSA Informs or a CSA certication notice. UL effective date The effective date for UL is available on ULs website at . General National differences from the text of the International Electrotechnical Commission (IEC) Publication 60950

37、-23, Information Technology Equipment Safety Part 23: Large Data Storage Equipment, Copyright 2005, are indicated by the following margin notations: There are six types of national differences, as noted below. The national difference type is noted in the margin next to the affected text. The standar

38、d may not include all types of these national differences. D1 national differences based on national regulatory requirements which result in equivalent or more stringent requirements than in IEC 60950-23. D2 national differences based on other than national regulatory requirements which result in eq

39、uivalent or more stringent requirements than in IEC 60950-23. DI national differences based on IEC nal draft international standards (FDIS). DI national differences may be less stringent than, equivalent to, or more stringent than requirements in IEC 60950-23. DC national differences based on UL and

40、 CSA component requirements. DC national differences may be less stringent than, equivalent to, or more stringent than component requirements in IEC 60950-23. D3 national differences based on binational requirements which result in less stringent requirements than in IEC 60950-23. DE editorial natio

41、nal differences that correct typographical errors in IEC 60950-23 or revise the terminology, but do not alter the technical intent of the requirements. This notation is also used for informative statements such as the Preface. National differences have been incorporated into the body of the standard

42、. If national differences necessitate the deletion of IEC 60950-23 text, the IEC 60950-23 text has been retained but has been lined out. Text added as a result of national differences has been underlined. Text added as the Preface and Annex NAE is not underlined. APRIL 23, 2007 CAN/CSA-C22.2 NO. 609

43、50-23-07 UL 60950-23 5 DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DE DEUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Annex NAE has been included at the back of the standard.

44、Pointers to this annex are provided in the right-hand margin of the body of the standard to direct the user to this informative annex. The pointer text is provided in BOLD ITALICS. An examples of such a pointer is shown here in the right-hand margin. The text, gures, and tables of International Elec

45、trotechnical Commission Publication 60950-23, Information Technology Equipment Safety Part 23: Large Data Storage Equipment, Copyright 2005, are used in this standard with the consent of the International Electrotechnical Commission. The International Electrotechnical Commission Foreword is not a pa

46、rt of the requirements of this standard but is included for information purposes only. APRIL 23, 2007 CAN/CSA-C22.2 NO. 60950-23-07 UL 60950-23 6 DE DE DE DE DE DE DE DE DE DE NAEUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTERNATIONAL

47、ELECTROTECHNICAL COMMISSION INFORMATION TECHNOLOGY EQUIPMENT SAFETY Part 23: Large data storage equipment FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The

48、 object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic elds. To this end and in addition to other activities, IEC publishes International Standards, Technical Specications, Technical Reports, Publicly Available Specications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organiza