1、CAN/CSA-C22.2 No. 60950-22-07(IEC 60950-22:2005, MOD)A National Standard of CanadaInformation Technology Equipment Safety Part 22: Equipment to beInstalled OutdoorsLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process
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17、l Notice, you may not load or use this document or make any copies of the contents hereof, and if you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 1CAN/CSA-C22.2 No. 609
18、50-22-07December 2011Note: General Instructions for CSA Standards are now called Updates. Please contact CSA Information Products Sales or visit shop.csa.ca for information about the CSA Standards Update Service.Title: Information Technology Equipment Safety Part 22: Equipment to be Installed Outdoo
19、rs originally published April 2007The following revisions have been formally approved and are marked by a vertical line in the margin on the attached replacement pages:Revised Title page, copyright page, Clause 5, and Annex NAENew NoneDeleted None Update your copy by inserting these revised pages.Ke
20、ep the pages you remove for reference.Blank pageInformation Technology Equipment Safety Part 22:Equipment to be Installed OutdoorsApril 23, 2007(Title Page Reprinted: December 19, 2011)This national standard is based on publication IEC 60950-22, First Edition (2005).Canadian Standards AssociationCAN
21、/CSA-C22.2 No. 60950-22-07First Edition(IEC 60950-22: 2005, MOD)Underwriters Laboratories Inc.UL 60950-22First EditionANSI/UL 60950-22-2011Commitment for AmendmentsThis standard is issued jointly by the Canadian Standards Association (CSA) andUnderwriters Laboratories Inc. (UL). Comments or proposal
22、s for revisions on anypart of the standard may be submitted to CSA or UL at any time. Revisions to thisstandard will be made only after processing according to the standardsdevelopment procedures of CSA and UL. CSA and UL will issue revisions to thisstandard by means of a new edition or revised or a
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25、747-4044._ULs Standards for Safety are copyrighted by UL. Neither a printed nor electroniccopy of a Standard should be altered in any way. All of ULs Standards and allcopyrights, ownerships, and rights regarding those Standards shall remain thesole and exclusive property of UL.This ANSI/UL Standard
26、for Safety consists of the First Edition including revisionsthrough December 19, 2011. The most recent designation of ANSI/UL 60950-22as an American National Standard (ANSI) occurred on December 19, 2011. ANSIapproval for a standard does not include the Cover Page, Transmittal Pages, TitlePage (fron
27、t and back), or the Preface. The National Difference Page and IECForeword are also excluded from the ANSI approval of IEC-based standards.Comments or proposals for revisions on any part of the Standard may besubmitted to UL at any time. Proposals should be submitted via a ProposalRequest in ULs On-L
28、ine 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.ISBN 1-55436-413-2Copyright 2007Canadian Standards AssociationAll rights reserved. No part of thispublication may be reproduced in anyform whatsoever
29、without the priorpermission of the publisher.Copyright 2011Underwriters Laboratories Inc.4.3 Rise of earth potentialAttention is drawn to the fact that during fault clearing conditions, HAZARDOUS VOLTAGES may existand be accessible for longer periods than for indoor equipment and special earthing co
30、nditionsmay be necessary. These are typically specified in local installation codes.NOTE In the USA, these requirements are contained in the National Electrical Code. In Canada, they are contained in the CanadianElectrical Code.Compliance is checked by evaluation of the installation instructions.5 M
31、arking and instructionsThe installation instructions for OUTDOOR EQUIPMENT shall include details of any special featuresneeded for protection from conditions in the OUTDOOR LOCATION(see 1.7.2 of IEC 60950-1).If a manufacturer of an OUTDOOR ENCLOSURE classifies a product in accordance with IEC 60529,
32、 theIP code shall be declared, however it is not required to mark the IP code on the OUTDOORENCLOSURE. It is not required to make such a declaration for OUTDOOR EQUIPMENT.Additionally, OUTDOOR ENCLOSURES shall be classified and marked in accordance with UL 50 or UL50E, or CAN/CSA C22.2 No. 94 or CAN
33、/CSA C22.2 No. 94.2.Compliance is checked by inspection.6 Protection from electrical shock in an outdoor location6.1 Voltage limits of user-accessible parts in outdoor locationsUSER-accessible conductive parts in an OUTDOOR LOCATION shall meet the requirements for an SELVCIRCUIT in 2.2.2 and 2.2.3 o
34、f IEC 60950-1, except that the voltage limits shall not exceed: 15 V a.c., 21,2 V peak, or 30 V d.c. under normal operating conditions (see 2.2.2), 15 V a.c., 21,2 V peak, or 30 V d.c. for longer than 0,2 s under single faultconditions (see 2.2.3). Moreover, the voltage shall not exceed 30 V a.c., 4
35、2,4 V peakor 60 V d.c.The exception in 2.2.3 of IEC 60950-1 relating to 2.3.2.1 b) (2.3.2 in IEC 60950-1, first edition)of the same publication, does not apply to USER-accessible conductive parts.NOTE Lower voltage limits apply because the contact resistance of the body is reduced when subjected to
36、wet conditions.Compliance is checked by measurement.DECEMBER 19, 2011 CAN/CSA-C22.2 NO. 60950-22-07 UL 60950-22 15D1D1DENAE6.2 Limited current circuits in outdoor locationsThe requirements of 2.4 of IEC 60950-1, apply without change.7 Wiring terminals for connection of external conductorsThe mains s
37、upply terminations for OUTDOOR EQUIPMENT that is intended to be powered: via the normal building installation wiring, shall be as specified in 3.3 of IEC60950-1; directly from the mains distribution system, shall be as specified in IEC 60364.The applicable parts of the Canadian Electrical Code, Part
38、 I, CSA C22.1; Canadian ElectricalCode, Part III, CSA C22.3; the National Electrical Code, NFPA 70; and the National ElectricalSafety Code, ANSI/IEEE C2, shall apply as appropriate.NOTE For other terminals, IEC 60950-1 applies.Compliance is checked by inspection.8 Construction requirements for outdo
39、or enclosures8.1 GeneralProtection against corrosion shall be provided by the use of suitable materials or by theapplication of a protective coating applied to the exposed surface, taking into account theintended conditions of use.Parts, such as dials or connectors, that serve as a functional part o
40、f an OUTDOOR ENCLOSURE shallcomply with the same environmental protection requirements as for the OUTDOOR ENCLOSURE.NOTE 1 Aspects affecting safety which require the integrity of the OUTDOOR ENCLOSURE through the life of the product include: continued protection against impact; continued protection
41、against ingress of dust and water; continued provision of earth continuity.An OUTDOOR ENCLOSURE shall not be used to carry current during normal operation if this couldcause corrosion that would impair safety. This does not preclude connection of a conductive partof an OUTDOOR ENCLOSURE to protectiv
42、e earth for the purpose of carrying fault currents.NOTE 2 The action of a current flowing through a joint can increase corrosion under wet conditions.Where a conductive part of an OUTDOOR ENCLOSURE is connected to protective earth for the purposeof carrying fault currents, the resulting connection s
43、hall meet the requirements of 2.6 of IEC60950-1, after the appropriate weather conditioning tests, see 8.3.Compliance is checked by inspection and, if necessary, by the tests of 2.6 of IEC 60950-1 and8.3 of this standard.APRIL 23, 2007CAN/CSA-C22.2 NO. 60950-22-07 UL 60950-2216D1D1D1NAEAnnex F(infor
44、mative)BibliographyIEC 60364-1:2001, Electrical installations of buildings Part 1: Fundamental principles,assessment of general characteristics, definitionsIEC 60364-4-44, Electrical installations of buildings Part 4-44: Protection for safety Chapter44: Protection against voltage disturbances and el
45、ectromagnetic disturbancesIEC 60364-5-53, Electrical installations of buildings Part 5-53: Selection and erection ofelectrical equipment Isolation, switching and controlIEC 60439-5:1996, Low-voltage switchgear and controlgear assemblies Part 5: Particularrequirements for assemblies intended to be in
46、stalled outdoors in public places Cabledistribution cabinets (CDCs) for power distribution in networks1)Amendment 1 (1998)IEC 60664-1, Insulation coordination for equipment within low-voltage systems Part 1:Principles, requirements and testsIEC 60721-3-4, Classification of environmental conditions P
47、art 3: Classification of groups ofenvironmental parameters and their severities Section 4: Stationary use at non-weatherprotected locationsIEC 61024-1:1990, Protection of structures against lightning Part 1: General principlesIEC 61587-1:1999, Mechanical structures for electronic equipment Tests for
48、 IEC 60917 andIEC 60297 Part 1: Climatic, mechanical tests and safety aspects for cabinets, racks, subracksand chassisIEC 61969-3, Mechanical structures for electronic equipment Outdoor enclosures Part 3:Sectional specification Climatic, mechanical tests and safety aspects for cabinets and casesASTM
49、 D471-98: Standard Test Method for Rubber Property-Effect of Liquids1)A consolidated edition (1.1) exists, including IEC 60439-5:1996 and its Amendment 1 (1998).APRIL 23, 2007 CAN/CSA-C22.2 NO. 60950-22-07 UL 60950-22 35Annex NAE(informative)U.S. and Canadian regulatory requirementsThis annex provides examples of and references for regulatory
