CSA C22 2 NO 304-2014 Enclosed and dead-front switches for photovoltaic applications (First Edition).pdf

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1、C22.2No. 304-14Enclosedand dead-frontswitches forphotovoltaic applicationsLegalNotice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approvedby the Standards Council of Canada. This process brings together v

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18、2 No. 304-14June 2014Title: Enclosed and dead-front switches for photovoltaic applicationsTo register for e-mail notification about any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that you will need to register for updates to this publication is 2423045.If yo

19、u require assistance, please e-mail techsupportcsagroup.org or call 416-747-2233.Visit CSA Groups policy on privacy at csagroup.org/legalto find out how we protect your personalinformation.ISBN 978-1-77139-562-5 2014 CSA GroupAll rights reserved.No part of this publication may be reproduced in any f

20、orm whatsoever withoutthe prior permission of the publisher.Published in June 2014 by CSA GroupA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6To purchase standards and related publications, visit our Online Store at shop.csa.caor call to

21、ll-free 1-800-463-6727 or 416-747-4044.TMA trade-mar k of the Canadian S tandards Association, operating as “CSA Group”Enclosedand dead-frontswitches forphotovoltaicapplicationsC22.2 No. 304-14C22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group1Cont

22、entsTechnical Committee on Industrial Products 2Subcommittee on Photovoltaic Switches 4Preface 51 Scope 62 Reference publications 63 Definitions 74 Construction 74.1 General 74.2 Enclosures 84.3 Wiring 85 Markings 96 Testing 96.1 General 96.2 Heating test 106.3 Overload test 106.4 Endurance test 106

23、.5 Short-circuit withstand test 106.6 Short circuit closing tests 10C22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group2Technical Committee on IndustrialProductsR.M. Bartholomew Electric Power Equipment Ltd,Vancouver, British ColumbiaCategory: Produ

24、cer InterestChairR.P. de Lhorbe Schneider Electric Canada, Inc.,Richmond, British ColumbiaCategory: Producer InterestVice-ChairD.P. Badry Government of Yukon,Whitehorse,YukonCategory: Governmentand/or Regulatory AuthorityB. Baldwin Startco Engineering ULC,Saskatoon, SaskatchewanCategory: Producer In

25、terestV.V. Gagachev Eaton,Burlington, OntarioCategory: Producer InterestD.R.A. MacLeod Department of Labour and Advanced Education,Halifax, Nova ScotiaCategory: Governmentand/or Regulatory AuthorityN. Mancini Mississauga, OntarioCategory: General InterestD. Mascarenhas Brampton, OntarioCategory: Gen

26、eral InterestD.G. Morlidge Fluor Canada Ltd.,Calgary, AlbertaCategory: General InterestT. Olechna Electrical Safety Authority,Mississauga, OntarioCategory: Governmentand/or Regulatory AuthorityR. Pack SaskPower,Saskatoon, SaskatchewanCategory: Governmentand/or Regulatory AuthorityC22.2 No. 304-14Enc

27、losed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group3M. Smith Rockwell Automation Canada Inc.,Cambridge, OntarioCategory: Producer InterestA.Z. Tsisserev Applied Engineering Solutions Ltd.,Vancouver, British ColumbiaCategory: General InterestD. Stefancic CSA Group,Miss

28、issauga, OntarioProject ManagerC22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group4Subcommittee on PhotovoltaicSwitchesV. Gagachev Eaton,Burlington, OntarioChairY. Boodram Schneider Electric Canada, Inc.,Mississauga, OntarioVice-ChairT. Dinic Electr

29、ical Safety Authority,Mississauga, OntarioT. Evans CSA Group,Toronto, OntarioC. Kennedy Schneider Electric USA, Inc., Square D,Hopkins, South Carolina, USAP. Morton TUV Rheinland Canada Inc.,Toronto, OntarioB. Patel ICCNexergy Inc.,Escondido, California, USAK. Rempe Siemens Industry, Inc.,Norcross,

30、Georgia, USAL. Silecky Mersen Canada Toronto Inc.,Mississauga, OntarioC. Thwaites Mersen Canada Toronto Inc.,Mississauga, OntarioA. Wasim Siemens Canada,Oakville, OntarioD. Stefancic CSA Group,Mississauga, OntarioProject ManagerC22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applic

31、ationsJune 2014 2014 CSA Group5PrefaceThis is the first edition of CSA C22.2 No. 304, Enclosed and dead-front switches for photovoltaicapplications, one of a series of Standards issued by CSA Group under Part II of the Canadian ElectricalCode.This Standard is intended to be used in conjunction with

32、CAN/CSA-C22.2 No. 4, Enclosed and dead-frontswitches. The material in this Standard supplements CAN/CSA-C22.2 No. 4 by providing additionalrequirements for switches that are intended for use in photovoltaic applications.For general information on the Standards of the Canadian Electrical Code, Part I

33、I, see the Preface ofCAN/CSA-C22.2 No. 0.This Standard is considered suitable for use for conformity assessmentwithin the stated scope of theStandard.This Standard was prepared by the Subcommittee on Photovoltaic Switches, under the jurisdiction of theTechnical Committee on Industrial Products and t

34、he Strategic Steering Committee on Requirements forElectrical Safety, and has been formally approved by the Technical Committee.Interpretations: The Strategic Steering Committee on Requirements for Electrical Safety has provided thefollowing direction for the interpretation of the standards under it

35、s jurisdiction: “Theliteral text shall beused in judging compliance of products with the safety requirements of this Standard. When the literaltext cannot be applied to the product, such as for new materials or construction, and when a relevantcommittee interpretation has not already been published,

36、 CSAs procedures for interpretation shall befollowed to determine the intended safety principle.”Notes:1) Use of the 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 no

37、te that itremains the responsibility of the users of the Standard to judge its suitability for their particular purpose.3) This Standard was developed by consensus, which is defined by CSA Policy governing standardization Codeof good practice for standardization as “substantial agreement. Consensus

38、implies much more than a simplemajority, but not necessarily unanimity”. It is consistent with this definition that a member may be included inthe 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, p

39、lease send the following information toinquiriescsagroup.organd include “Request for interpretation” in the subject line:a) define the problem, making reference to the specific clause, and, where appropriate, include anillustrative sketch;b) provide an explanation of circumstances surrounding the ac

40、tual field condition; andc) where possible, phrase the request in such a way that a specific “yes” or “no” answer will address theissue.Committee interpretations are processed in accordance with the CSA Directives and guidelines governingstandardization and are available on the Current Standards Act

41、ivities page at standardsactivities.csa.ca.5) This Standard is subject to review five years from the date of publication and suggestions for its improvementwill be referred to the appropriate committee. To submit a proposal for change, please send the followinginformation to inquiriescsagroup.org an

42、d include “Proposal for change” in the subject line:a) Standard designation (number);b) relevant clause,table, and/or figure number;c) wording of the proposed change; andd) rationale for the change.C22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group

43、6C22.2 No. 304-14Enclosedand dead-frontswitches forphotovoltaicapplications1 Scope1.1This Standard applies to enclosed and dead-front switches for use in photovoltaic (PV) systems rated1500 V dc maximum, 1200 A maximum.1.2Fusible switches for photovoltaic applications are intended for use with photo

44、voltaic fuses covered byCSA C22.2 No. 248.19.1.3General requirements applicable to this Standard are given in the latest edition of CAN/CSA-C22.2 No. 0.1.4This Standard is intended to be used in conjunction with CAN/CSA-C22.2 No. 4, which specifies additionalmandatory requirements.1.5In this Standar

45、d,“shall” is used to express a requirement, i.e., a provision that the user is obliged tosatisfy in order to comply with the standard; “should” is used to express a recommendation or thatwhich is advised but not required; and “may” is used to express an option or that which is permissiblewithin the

46、limits of the standard.Notes accompanying clauses do not include requirements or alternative requirements; the purpose of anote accompanying a clause is to separate from the text explanatory or informative material.Notes to tables and figures are considered part of the table or figure and may be wri

47、tten asrequirements.Annexes are designated normative (mandatory) or informative (non-mandatory)to define theirapplication.2 Reference publicationsThis Standard refers to the following publications, and where such reference is made, it shall be to theedition listed below.CSA GroupC22.1-12Canadian Ele

48、ctrical Code, Part IC22.2 No. 304-14Enclosed and dead-front switches for photovoltaic applicationsJune 2014 2014 CSA Group 7CAN/CSA-C22.2 No. 0-10General Requirements Canadian electrical code, Part IIC22.2 No. 0.12-M1985(R2012)Wiring space and wire bending space in enclosuresfor equipment rated 750

49、V or lessCAN/CSA-C22.2 No. 4-04 (R2009)Enclosed and dead-front switchesC22.2 No. 248.19 (under development)Fuses for photovoltaic systemsC22.2 No. 4248.19 (under development)Photovoltaic fuseholderassemblies3 DefinitionsIn addition to the definitions provided in CAN/CSA-C22.2 No. 4, the following definitions apply:Line terminals terminals to which the source is attached.Load terminals terminals opposite to the line terminals.Photovoltaic (PV) dealing with the conversion of light directly into electrical energy.Photovoltaic switch an enclosed or dead