CSA C22 2 NO 76-2014 Splitters (Fourth Edition).pdf

1、C22.2 No. 76-14SplittersLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers representing varied viewpoints and int

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21、-mar k of the Canadian S tandards Association, operating as “CSA Group”SplittersC22.2 No. 76-14C22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 1ContentsTechnical Committee on Industrial Products 3Subcommittee on Splitters 6Preface 71 Scope 82 Reference publications 83 Definitions 94 Construction 1

22、04.1 Enclosures 104.1.1 General purpose 104.1.2 Special purpose 104.2 Current-carrying parts 114.2.1 General 114.2.2 Busbars 114.2.3 Wire connectors 114.2.4 Fastening of current-carrying parts 134.3 Insulating supports 144.4 Electrical spacings 144.5 Wiring space and wire bending space 154.5.1 Bare

23、live parts 154.5.2 Cable entry 154.5.3 Knockouts, pryouts, twistouts 154.5.4 Entries with no knockouts 154.5.5 Space at terminations 154.5.6 Clearance over busbars 164.6 Grounding and bonding 165 Marking 175.1 Information to be marked 175.2 Location 175.3 Paper sticker 185.4 Wire connector kits 186

24、Tests 186.1 Temperature 186.2 Load cycling 196.3 Mechanical strength 196.3.1 Compression 196.3.2 Deflection 206.3.3 Strength of bases for the mounting of live parts 206.4 Dielectric strength 206.5 Adherence of coating on aluminum surfaces 21C22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 2Annex A

25、(informative) Wiring space and wire bending space in electrical equipment intended to be field wired 26C22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 3Technical Committee on Industrial ProductsR.M. Bartholomew Electric Power Equipment Ltd, Vancouver, British ColumbiaRepresenting Producer Interest

26、ChairR.P. de Lhorbe Schneider Electric Canada, Inc., Richmond, British ColumbiaRepresenting Producer InterestVice-ChairD.P. Badry Government of Yukon, Whitehorse, Yukon TerritoryRepresenting Government and/or Regulatory AuthorityB. Baldwin Startco Engineering ULC, Saskatoon, SaskatchewanAssociateW.J

27、. Bryans Electro-Federation Canada, Toronto, OntarioAssociateR.B. Buckler ASCO Power Technologies Canada, Brantford, OntarioAssociateW.J. Burr Burr and Associates, Campbell River, British ColumbiaAssociateF. Chan Schneider Electric Canada, Inc., Mississauga, OntarioAssociateP.D. den Bakker Shell Glo

28、bal Solutions Canada, Calgary, AlbertaAssociateS.W. Douglas International Association of Electrical Inspectors, Toronto, OntarioAssociateJ.H. Dymond Peterborough, Ontario AssociateV.V. Gagachev Eaton, Burlington, OntarioAssociateC22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 4W.K. Jones Eaton, Bu

29、rlington, OntarioRepresenting Producer InterestR.J. Kelly Government of Nunavut-Dept of Community 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” answer will address the issue.Comm

30、ittee 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 of publication and suggestions fo

31、r its improvement will be referred to the appropriate committee. To submit a proposal for change, please send the following information to inquiriescsagroup.org and include “Proposal for change” in the subject line:a) Standard designation (number);b) relevant clause, table, and/or figure number;c) w

32、ording of the proposed change; andd) rationale for the change.C22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 8C22.2 No. 76-14Splitters1 Scope1.1 This Standard applies to splitters, having a current rating of 5000 A and less, intended for installation in nonhazardous locations in accordance with t

33、he Rules of the Canadian Electrical Code, Part I on systems having nominal voltages of 600 V and less.1.2 General requirements applicable to this Standard are given in CAN/CSA-C22.2 No. 0.1.3 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to sa

34、tisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.Notes accompanying clauses do not include requirements or alternat

35、ive requirements; the purpose of a note 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 written as requirements.Annexes are designated normative (mandatory) or informative (non-ma

36、ndatory) to define their application.2 Reference publicationsThis Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below:CSA GroupC22.1-12Canadian Electrical Code, Part ICAN/CSA-C22.2 No. 0-10General Requirements Canadian Electrical C

37、ode, Part IICAN/CSA-C22.2 No. 0.4-04 (R2009)Bonding and grounding of electrical equipment (Protective grounding)C22.2 No. 0.12-M1985 (R2012)Wiring space and wire bending space in enclosures for equipment rated 750 V or lessC22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 9C22.2 No. 26-13Wireways, a

38、uxiliary gutters, and associated fittingsCSA C22.2 No. 29-11Panelboards and enclosed panelboardsC22.2 No. 40-M1989 (R2009)Cutout, junction, and pull boxesC22.2 No. 65-13Wire connectorsCAN/CSA-C22.2 No. 94.2-07 (R2012)Enclosures for electrical equipment, environmental considerations.C22.2 No. 1691-12

39、Single pole locking-type separable connectorsANSI/ASME (American National Standards Institute/American Society of Mechanical Engineers)B18.21.1-2009Washers: Helical Spring-Lock, Tooth Lock, and Plain Washers (Inch Series)3 DefinitionsThe following definitions apply in this Standard:Branch connectors

40、 the connectors provided for the termination of conductors used to carry power out of the splitter.Busbar a conductor, generally rectangular in cross-section, mounted on insulators and extending for a substantial distance through the length of the enclosure, and on which the main terminal and a numb

41、er of branch terminals are mounted, the latter being distributed along the length of the busbar.Main connectors the connectors provided for the termination of the conductors to be used for the supply of power to the splitter.Splitter a splitter box or splitter trough.Splitter box a metal enclosure h

42、aving a length-to-width ratio less than 3 to 1 and containing only terminal plates or busbars having main and branch connectors or provisions for main or branch wire connectors.Splitter trough a metal enclosure having a length-to-width ratio equal to or exceeding 3 to 1 and containing only terminal

43、plates or busbars having main and branch connectors or provision for main and branch wire connectors.Stepped buses a system of busbars in which the bars differ from each other, in distance from the enclosure wall on which they are supported.Terminal plate a short conductor, generally rectangular in

44、cross-section, which, when mounted on an insulator, and having a main connector and a number of branch connectors or provision for main and branch circuit wire connectors, forms a terminal block.C22.2 No. 76-14SplittersMarch 2014 2014 CSA Group 104 Construction4.1 Enclosures4.1.1 General purpose4.1.

45、1.1 A general purpose enclosure for a splitter box shall conform with the requirements of CSA C22.2 No. 40, and for a splitter trough shall conform with the requirements of CSA C22.2 No. 26, except as outlined in Clauses 4.1.1.2 to 4.1.1.6.4.1.1.2 Each cover shall conform with the following:a) it sh

46、all be not longer than 1830 mm and shall be hinged if it weighs more than 34 kg;b) a captive screw fastening shall be considered equivalent to the cover latch required by CSA C22.2 No. 40; andc) for cover sealing other than captive screws, provision for locking shall be provided.Note: Covers may be

47、provided with means for sealing.4.1.1.3 The depth of the enclosure shall be not less than required to accommodate the conduit needed for the largest conductors for which main terminals have been provided.4.1.1.4 The length of the enclosure shall not exceed 4900 mm.Note: A splitter in an enclosure gr

48、eater than 4900 mm in length is considered a busway.4.1.1.5 Sheet steel used for the back, side, and end walls of boxes shall have thicknesses not less than that specified in Table 4, except that an enclosure may be constructed of sheet steel that is thinner than that specified in Table 4 if ita) is

49、 not thinner than 1.34 mm; andb) complies with the test requirements of Clause 6.3.1.4.1.1.6 Sheet metal used for doors and covers of troughs shall have a thickness not less than that specified in Table 5, except that a door or cover may be constructed of sheet metal that is thinner than that specified in Table 5 if ita) is not thinner than 1.34 mm for steel or stainless steel or 1.91 mm for aluminum, copper, or brass;b) is flanged or similarly strengthened; andc) meets the requirements of Clause 6.3.2.4.1.2 Special purposeSpecial purpose encl