CSA C22 2 NO 55-2015 Special use switches (Fourth Edition).pdf

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18、rviceC22.2 No. 55-15May 2015Title: Special use switchesTo 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 2423572.If you require assistance, please e-mail

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21、044.TMA trade-mar k of the Canadian S tandards Association, operating as “CSA Group”Special use switchesC22.2 No. 55-15C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 1ContentsTechnical Committee on Wiring Products 3Integrated Committee on Wiring Devices 5Preface 81 Scope 92 Reference pub

22、lications 93 Definitions 104 General requirements 115 Construction 115.1 General 115.2 Insulating materials Television switches 115.3 Enclosures 125.4 Nipples 125.5 Linings 135.6 Bases and bodies 135.7 Protection (mounting) 135.8 Sealing 135.9 Current-carrying parts 135.10 Terminal parts and leads 1

23、45.11 Air gaps and creepage distances 155.12 Actuating members 155.13 Assembly 155.14 Ratings 166 Marking 166.1 General 166.2 Switch for the control of tungsten-filament lamps 166.3 AC-only switches 176.4 Television switch 177 Tests 177.1 General 177.2 Overload 187.2.1 Ampere rated 187.2.2 Horsepowe

24、r rated 207.2.3 Television switch 207.3 Endurance 207.3.1 Ampere rated 207.3.2 Horsepower rated 217.3.3 “T” rated (ac or dc) 217.3.4 “L” rated (ac) 22C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 27.3.5 Television switch 227.4 Temperature 237.4.8 Television switch 247.5 Dielectric stren

25、gth 247.5.3 Television switch 247.6 Endurance (continued) Television switch 257.7 Dielectric strength (repeated) Television switch 257.8 Pull-out (push-in terminals) 257.9 Lead security 267.10 Limited short-circuit 267.11 Crushing 267.12 Effect of heat on actuating members 277.13 Environmental 277.1

26、4 Arc-tracking Television switches 27Annex A (informative) Guidance for the minimum quantities of specimens to be used for the tests and the sequence in which the tests are to be performed 31C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 3Technical Committee on Wiring ProductsK.L. Rodel

27、Hubbell Canada LP, Pickering, Ontario Category: Producer InterestChairP. Desilets Leviton Manufacturing of Canada Limited, Pointe-Claire, Qubec Category: Producer InterestVice-ChairW.J. Bryans Electro-Federation Canada, Toronto, Ontario AssociateW.J. Burr Burr and Associates, Campbell River, British

28、 Columbia Category: General InterestC. Davis Electro Cables Incorporated, Trenton, Ontario Category: Producer InterestS.W. Douglas International Association of Electrical Inspectors, Toronto, Ontario Category: General InterestD. Drysdale Nexans Canada Inc, Milton, Ontario Category: Producer Interest

29、S.P. Hawkins Shawflex A Division of ShawCor Ltd., Toronto, Ontario AssociateR.J. Kelly Government of NunavutDept 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

30、 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 of pu

31、blication. Suggestions for 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,

32、 and/or figure number;c) wording of the proposed change;d) rationale for the change.C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 9C22.2 No. 55-15Special use switches1 Scope1.1 This Standard applies to manually operated and mechanically operated special use switches that area) for use o

33、n dc, ac/dc, or ac only; andb) rated at not more than i) 60 A at 250 V or less; orii) 30 A or 2 hp at 600 V or lessand intended for use in accordance with the Canadian Electrical Code, Part I.1.2 This Standard does not apply toa) switches forming parts either of electrothermal appliances or automati

34、c temperature-responsive switches;b) switching mechanisms built into lampholders covered in CSA C22.2 No. 43;c) general use switches covered in CSA C22.2 No. 111;d) solid-state single-phase motor speed controls covered in CSA C22.2 No. 156;e) dimmers covered in CSA C22.2 No. 184.1;f) clock-operated

35、switches covered in CSA C22.2 No. 177;g) switches for use in hazardous locations; andh) solid state lighting controls covered in CSA C22.2 No. 184.1.3 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standar

36、d; “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 alternative requirements; the purpose of a note a

37、ccompanying 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-mandatory) to define their application.2 Re

38、ference publicationsThis Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments published thereto.C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 10CSA GroupC22.1-2015 Canadian Electrical Code, Par

39、t ICAN/CSA-C22.2 No. 0-10 (R2015) General requirements Canadian Electrical Code, Part IICAN/CSA-C22.2 No. 0.17-00 (R2013) Evaluation of properties of polymeric materialsC22.2 No. 21-14 Cord sets and power-supply cordsC22.2 No. 43-08 (R2013) LampholdersCAN/CSA-C22.2 No. 94.2-07 (R2012) Enclosures for

40、 electrical equipment, environmental considerationsC22.2 No. 111-10 General-use snap switchesC22.2 No. 153-14 Electrical quick-connect terminalsC22.2 No. 156-M1987 (R2013) Solid-state speed controlsC22.2 No. 177-13 Clock-operated switchesC22.2 No. 184-15 Solid-state lighting controlsC22.2 No. 184.1-

41、96 (R2011) Solid-state dimming controlsASTM InternationalD495-14 Standard Test Method for High-Voltage, Low-Current, Dry Arc Resistance of Solid Electrical InsulationE28-14 Standard Test Methods for Softening Point of Resins Derived from Pine Chemicals and Hydrocarbons, by Ring-and-Ball Apparatus3 D

42、efinitionsThe following definitions shall apply in this Standard:Actuating member that part which is pulled, pushed, or turned in operating the switch mechanism.C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 11Base that part on or in which are fastened the frame and the operating parts o

43、f the switch mechanism.General use switch a switch intended for use in general distribution and branch circuits. It is rated in amperes and is capable of interrupting its rated current at rated voltage.Lining insulating material covering the interior surface of the metal cover of a switch to prevent

44、 electrical contact between bare live parts and the cover.Special use switch a switch intended specifically for use as part of some device or appliance or for some extraordinary application, and constructed so that it cannot be readily installed in a device box or on an outlet-box cover. Note: Switc

45、hes for installation in vacuum cleaner handles or radio or television receivers are examples of special use switches.Television switch a switch intended for use as a supply-circuit control switch in a radio or television receiver or other audio or video equipment.4 General requirementsGeneral requir

46、ements applicable to this Standard are given in CAN/CSA-C22.2 No. 0.5 Construction5.1 GeneralComponent parts of switches shall be of types specifically approved for the use intended, or shall be approved as an integral part of, and with, the device.5.2 Insulating materials Television switches5.2.1 I

47、nsulating materials used as part of the switch enclosure or for a part that is in, or projects into, an opening in the switch enclosure shall have a flammability classification of at least V0 in accordance with CAN/CSA-C22.2 No. 0.17.5.2.2 Except as permitted by Clause 5.2.4, insulating material as

48、described in Clause 5.2.1 on which contacts are mounted directly shall be capable of meeting the arc-tracking requirement of Clause 7.1.4.5.2.3 Insulating materials used within the enclosure of a switch shall have a flammability classification of at least HB in accordance with CAN/CSA-C22.2 No. 0.17

49、.5.2.4 An actuator made of an insulating material need not comply with the requirement of Clause 5.2.2 ifa) the area occupied by the actuator, where it passes through the plane of the enclosure, plus the area of all other openings in the enclosure, does not exceed 32 mm2; andb) the actuator complies with the requirement of Clause 5.2.1.C22.2 No. 55-15Special use switchesMay 2015 2015 CSA Group 125.3 Enclosures5.3.1 Switches shall be provided with complete enclosures that house all live parts, except that switches specifically for use