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24、pplies with extra-low- voltage Class 2 outputsC22.2 No. 223-15C22.2 No. 223-15Power supplies with extra-low-voltage Class 2 outputsDecember 2015 2015 CSA Group 1ContentsTechnical Committee on Industrial Products 3Subcommittee on Extra-Low Voltage Direct Plug-in and Cord Connected Transformers and Re
25、ctifiers 6Preface 71 Scope 82 Reference publications 93 Definitions 114 Construction 114.1 General requirements 114.2 General 124.3 Sources of fire hazard 134.4 Enclosures 134.4.1 General 134.4.8 Protection against access to live parts 144.4.9 Outdoor use enclosures 144.5 Mechanical assembly 154.6 S
26、upply connections 164.6.1 Direct plug-in power supplies 164.6.2 Cord-connected power supplies 164.7 Internal wiring 184.8 Electrical insulating materials 184.9 Transformers and magnetic components 184.10 Switches 204.11 Electrical spacings 204.12 Output connections 214.13 Strain relief and blade ret
27、ention 224.14 Maximum output voltage 234.15 Provisions for limiting output current 234.16 Secondary circuit protection 234.17 Grounding and bonding 234.18 Printed wiring boards 244.19 Gaskets 244.20 Ground-fault circuit-interrupters 244.21 Backfeed protection 255 Marking 255.8 Power supplies suitabl
28、e for outdoor use 275.8.4 Instructions for power supply suitable for outdoor use 286 Tests 296.1 General 296.2 Test conditions 29C22.2 No. 223-15Power supplies with extra-low-voltage Class 2 outputsDecember 2015 2015 CSA Group 26.2.1 Voltage 296.2.2 Frequency 296.2.3 Ambient temperature 296.2.4 Load
29、 296.2.5 Method of measurement 306.3 Rating 306.3.1 Open-circuit secondary voltage 306.3.2 Rated input 316.3.3 Rated output 316.3.4 Maximum output current and power 316.4 Temperature (normal) 336.5 Dielectric strength 336.5.1 Primary circuit 336.5.2 Secondary circuit 346.5.3 Transformers 346.6 Leaka
30、ge current 346.7 Secondary circuit protection 356.8 Abnormal 366.9 Drop and impact 386.10 Strain relief and blade retention 396.11 Overload and endurance (primary circuit switches) 406.11.1 General 406.11.2 Overload 406.11.3 Endurance 416.12 Securement of components 416.13 Securement of removable, f
31、olding, or retractable blades 416.13.1 Folding or retractable blades 416.13.2 Removable blades 416.13.3 Blade test conclusion 416.14 Insulating material 416.15 Compression (rod) 416.16 Deformation (non-metallic enclosures) 426.17 Rain 426.18 Water immersion 436.19 UV Exposure Conditioning 43C22.2 No
32、. 223-15Power supplies with extra-low-voltage Class 2 outputsDecember 2015 2015 CSA Group 3Technical Committee on Industrial ProductsR.M. Bartholomew Electric Power Equipment Ltd., Vancouver, British Columbia Category: Producer InterestChairR.P. de Lhorbe Schneider Electric Canada, Inc., Richmond, B
33、ritish Columbia Category: Producer InterestVice-ChairB.M. Baldwin Saskatoon, Saskatchewan Category: Producer InterestW.J. Bryans Electro-Federation Canada, Toronto, Ontario AssociateR.B. Buckler ASCO Power Technologies Canada, Brantford, Ontario AssociateW.J. Burr Burr and Associates, Campbell River
34、, British Columbia AssociateC.C. Cormier Alberta Municipal Affairs, Edmonton, Alberta Category: Regulatory AuthorityP.D. den Bakker Shell Global Solutions Canada, Calgary, Alberta AssociateS.W. Douglas International Association of Electrical Inspectors, Toronto, Ontario AssociateJ.H. Dymond Peterbor
35、ough, Ontario AssociateV.V. Gagachev Eaton, Burlington, Ontario Category: Producer InterestR.J. Kelly Government of Nunavut-Dept. of Community Interim Certification Requirements for Direct Plug-in and Cord-Connected Power Supplies with Extra-Low-Voltage Class 2 Output for Outdoor Use.For general inf
36、ormation on Standards of the Canadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0, General Requirements Canadian Electrical Code, Part II.This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.This Standard was prepared by
37、a Subcommittee on Extra-Low Voltage Direct Plug-in and Cord Connected Transformers and Rectifiers under the jurisdiction of the Technical Committee on Industrial Products and the Standards Steering Committee on Canadian Electrical Code, Part II and has been formally approved by the Technical Committ
38、ee.Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided the following direction for the interpretation of standards under its jurisdiction: “The literal text shall be used in judging compliance of products with the safety requirements of this Standard.
39、 When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant committee interpretation has not already been published, CSA Groups procedures for interpretation shall be followed to determine the intended safety principle.”Notes: 1) Use of the
40、 singular does not exclude the plural (and vice versa) when the sense allows.2) 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 pur
41、pose.3) This Standard was developed by consensus, which is defined by CSA Policy governing standardization Code of good practice for standardization as “substantial agreement. Consensus implies much more than a simple majority, but not necessarily unanimity”. It is consistent with this definition th
42、at a member may be included in the Technical Committee list and yet not be in full agreement with all clauses of this Standard.4) To submit a request for interpretation of this Standard, please send the following information to inquiriescsagroup.org and include “Request for interpretation” in the su
43、bject line: a) define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;b) provide an explanation of circumstances surrounding the actual field condition; andc) where possible, phrase the request in such a way that a specific “yes” or “no” a
44、nswer will address the issue. Committee interpretations are processed in accordance with the CSA Directives and guidelines governing standardization and are available on the Current Standards Activities page at standardsactivities.csa.ca.5) This Standard is subject to review five years from the date
45、 of publication. Suggestions for its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiriescsagroup.organd include “Proposal for change” in the subject line: a) Standard designation (number);b) relevant clause, t
46、able, and/or figure number;c) wording of the proposed change; andd) rationale for the change.C22.2 No. 223-15Power supplies with extra-low-voltage Class 2 outputsDecember 2015 2015 CSA Group 8C22.2 No. 223-15Power supplies with extra-low-voltage Class 2 outputs1 Scope1.1 This Standard applies toa) i
47、ndoor and outdoor use Class 2 power supplies with input power of 660 W or less. These units are of both the direct plug-in and cord-connected types that utilize a step-down, isolating transformer and that may incorporate rectifiers and other components to provide an ac or dc output;b) Class 2 power
48、supplies as in Item a) employed as battery chargers for rechargeable batteries; and Note: For convenience, the term “power supply” may be used throughout this Standard.c) identified Class 2 outputs or extra-low voltage outputs of products covered by other standards. For example, permanently connecte
49、d units covered by CSA C22.2 No. 107.1.This Standard also provides direct plug-in requirements for products covered by other standards.1.2 This Standard applies to power supplies intended for use in non-hazardous locations in accordance with the Rules of the Canadian Electrical Code, Part I, when connected to a nominal system voltage of 120 V or 240 V supply. In addition, this Standard applies to permanently connected power supplies intended for use in Class 2 lighting systems for a nominal system voltage up to 600 V.1.3 These requirements do not cover the effec
