1、C22.2 No. 177-13Clock-operated switchesLegal 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 vie
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18、e ServiceC22.2 No. 177-13December 2013Title: Clock-operated 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 2422447.If you require assistance,
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20、ut the prior permission of the publisher.Published in December 2013 by CSA Group A not-for-profit private sector organization 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N6 To purchase standards and related publications, visit our Online Store at shop.csa.caor call toll-free 1-80
21、0-463-6727 or 416-747-4044.TMA trade-mar k of the Canadian S tandards Association, operating as “CSA Group”Clock-operated switchesC22.2 No. 177-13C22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 1ContentsTechnical Committee on Industrial Products 5Subcommittee on Automatic Control
22、s for Household Use 7Preface 91 Scope 102 Reference publications 113 Definitions 124 Construction 124.1 General 124.1.1 Electrical components Investigation 124.1.2 Electrical components Conformance 124.2 Frame and enclosure 134.2.1 General 134.2.2 Nonmetallic enclosures 134.2.3 Cast metal enclosures
23、 144.2.4 Sheet metal enclosures 144.2.5 Covers 154.2.6 Special purpose enclosures 154.3 Mounting 164.3.1 Permanently connected 164.3.2 Cord-connected 164.4 Plug-in devices 164.4.1 Requirement 164.4.2 Switch size and design 164.4.3 Grounding receptacle 164.4.4 Polarization 164.5 Assembly 164.5.1 Secu
24、re mounting 164.5.2 Turning prevention 174.5.3 Live parts 174.6 Operating mechanism 174.7 Corrosion protection 174.8 Insulating materials 174.8.1 Suitability 174.8.2 Flammability classification Permanent installation 174.8.3 Flammability classification Nonpermanent installation 174.8.4 Evaluation ch
25、aracteristics 184.8.5 Live part supports 184.8.6 Arc formation susceptability 184.8.7 Fire and shock hazard 184.9 Supply connections 18C22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 24.9.1 Permanently connected devices 184.9.2 Connections for wiring systems 194.9.3 Terminal part
26、s 194.10 Cord-connected devices 204.10.1 Cords and plugs 204.10.2 Polarization 204.10.3 Strain relief 214.10.4 Bushings 214.11 Grounding and bonding 214.11.1 Requirements 214.11.2 Circuitry 214.12 Receptacles 214.12.1 Requirements 214.12.2 Bonding and grounding 214.12.3 Overcurrent protection 224.12
27、.4 Dimension requirements 224.12.5 Projection-free area 224.13 Bonding of internal parts 224.13.1 General 224.13.2 Construction and connection 234.14 Current-carrying parts 234.14.1 Ferrous material 234.14.2 Uninsulated live parts 234.15 Internal wiring 234.15.1 Insulation 234.15.2 Suitability 244.1
28、5.3 Protection 244.15.4 Abrasion-free wireways 244.15.5 Abrasion-preventing holes 244.15.6 Bare conductor support 244.15.7 Wiring connections 244.16 Coil windings 244.16.1 Absorption resistance 244.16.2 Film-coated wire requirements 244.17 Transformers 254.17.1 Requirements 254.17.2 Overcurrent prot
29、ection 254.18 Spacings 254.18.1 Mounting 254.18.2 Standards 254.18.3 Measurement method 254.18.4 Spacings 254.18.5 Low voltage circuit requirements 254.18.6 Horsepower-rated controllers 264.18.7 Insulating barrier or liner Sole part 264.18.8 Insulating barrier or liner separation Additional to air s
30、pace 264.18.9 Spacing requirement compliance 264.18.10 Electronic circuit spacing 264.18.11 Fibre (or similar material) insulating barriers 27C22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 34.18.12 Minimum spacings 274.18.13 Minimum spacings Exceptions 274.19 Field-wiring space
31、and wire bending space 274.20 Component switches 275 Marking 275.1 Requirements 275.2 Exception 285.3 Incandescent lamps 285.4 Cord type HPN 285.5 Marking requirements 285.6 Wiring diagram 285.7 Label 285.8 Use of aluminum wire 295.9 Use of copper wire 295.10 Use of copper or aluminum wire 295.11 Us
32、e of mixed copper and aluminum wire 295.12 Designation 295.13 Character size 295.14 Dating 306 Tests 306.1 General 306.1.1 Switches Types 306.1.2 AC switch 306.1.3 Single-pole, double-throw switch 306.1.4 Test voltage 306.1.5 Switch status 306.1.6 Switch mounting 306.1.7 Switch mounting Alternative
33、306.1.8 Connection 316.2 Rating 316.2.1 Types 316.2.2 Tungsten-filament-lamp 316.2.3 AC switch 316.2.4 Permanently connected switches 316.2.5 Electronic ballast, CFLs, and LED driver rated switch 316.3 Leakage current 326.3.1 Testing 326.3.2 Accessible conductive surfaces 326.3.3 Nonmetallic conduct
34、ive surfaces 326.3.4 Measurement circuit 336.3.5 Testing condition 336.4 Overload 336.4.1 Testing 336.4.2 Operation cycle 336.4.3 Pilot-duty rating load 336.4.4 Current to horsepower conversion 346.4.5 AC motor switches 34C22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 46.4.6 Mul
35、ti-ampere-rated switches 346.4.7 Multi-horsepower-rated switches 346.4.8 Current-interrupting tests 346.4.9 Two-pole or four-pole switches 346.4.10 Other switch types 346.4.11 Fuse 346.4.12 Supply terminal 356.5 Endurance 356.5.1 Conditions 356.5.2 Method of operation 356.5.3 Test 356.5.4 Pilot duty
36、 switches 356.5.5 Rate of operation 356.6 Maximum temperatures 366.6.1 Temperature limit 366.6.2 Quick make-and-break mechanism 366.6.3 Volt ampere rated switches 366.6.4 Test room ambient temperature 366.6.5 Conditions 366.6.6 Obtaining temperature readings 366.6.7 Test current used 376.6.8 Test fr
37、equency 376.7 Tungsten-filament-lamp load 376.8 Special-purpose enclosure tests 376.9 Dielectric strength 376.9.1 Tests 376.9.2 Device disconnection 386.9.3 Dielectric testing 386.9.4 Test transformer 386.9.5 Electronic circuit components 386.9.6 Dielectric-strength 386.10 Impact 386.10.1 Test 386.1
38、0.2 Live part exposure 396.11 Printed wiring boards 396.12 Moisture-absorption test 396.12.1 Test method 396.12.2 Compliance criteria 396.13 Covers 396.13.1 Requirements 396.13.2 Release characteristics 396.13.3 Cover removal 396.13.4 Impact test 396.14 Knockouts 396.15 Strain relief 406.16 Bonding
39、resistance 406.17 Insulation resistance 40Annex A (informative) Marking translations 54C22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group5Technical Committee on Industrial ProductsR.M. Bartholomew Electric Power Equipment (1986) Ltd., Vancouver, British ColumbiaRepresenting Manufact
40、urersChairR.P. de Lhorbe Schneider Electric Canada, Inc., Richmond, British ColumbiaRepresenting ManufacturersVice-ChairD. Stefancic CSA Group, Mississauga, OntarioProject ManagerRepresenting Regulatory AuthoritiesD.P. Badry Government of Yukon, Whitehorse, Yukon TerritoryD.R.A. MacLeod Department o
41、f Labour and Advanced Education, Halifax, Nova ScotiaT. Olechna Electrical Safety Authority, Mississauga, OntarioR. Pack SaskPower, Saskatoon, SaskatchewanRepresenting ManufacturersW.K. Jones Eaton Electrical, Burlington, OntarioM. Smith Rockwell Automation Canada Inc., Cambridge, OntarioRepresentin
42、g General InterestsN. Mancini Mississauga, OntarioD. Mascarenhas Brampton, OntarioC22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 6D.G. Morlidge Fluor Canada Ltd., Calgary, AlbertaA.Z. Tsisserev Stantec Consulting Ltd, Vancouver, British ColumbiaC22.2 No. 177-13Clock-operated swi
43、tchesDecember 2013 2013 CSA Group 7Subcommittee on Automatic Controls for Household UseA. Bal Toronto, OntarioP.D. Barhydt Arctic Combustion Limited, Milton, OntarioD.M. Berlin Intermatic Incorporated, Spring Grove, Illinois, USAF. Dabiet Allanson International Inc., Toronto, OntarioA. Daher Honeywe
44、ll, St-Jean-sur-Richelieu, QubecD. Farchione Broan-NuTone LLC, Hartford, Wisconsin, USAE. Grzesik Mississauga, OntarioD.C. Johnson Invensys Controls, Carol Stream, Illinois, USAS. Kozma Spectral Design Ltd., Airdrie, AlbertaJ. Lemire Synapse Electronique, Grand-Mre, QubecT.M. Nguyen Therm-O-Disc Inc
45、orporated, Mansfield, Ohio, USAJ. Pallas Toronto, OntarioB. Shah Tork Division of NSI industries LLC, Mount Vernon, New York, USAA. Smith France A Scott Fetzer Company, Fairview, Tennessee, USAC22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 8P. Tervit Brampton, OntarioD. Tousigna
46、nt Honeywell, St-Jean-sur-Richelieu, QubecW. Travis Littelfuse, Inc., Chicago, Illinois, USAA.Z. Tsisserev Stantec Consulting Ltd, Vancouver, British ColumbiaR. Vandermeer Weyerhaeuser, Grande Prairie, AlbertaD.W. Wolbrink D W Wolbrink LLC, Slinger, Wisconsin, USAP. Glowacki CSA Group, Mississauga,
47、OntarioProject ManagerC22.2 No. 177-13Clock-operated switchesDecember 2013 2013 CSA Group 9PrefaceThis is the third edition of C22.2 No. 177, Clock-operated switches. It supersedes the previous editions published in 1992 and 1981. It is one of a series of Standards issued by CSA Group under Part II
48、of the Canadian Electrical Code.This Standard is considered suitable for use for conformity assessment within the stated scope of the Standard.This Standard was prepared by the Subcommittee on Automatic Controls for Household Use, under the jurisdiction of Technical Committee on Industrial Products
49、and the Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee.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 note that it remains 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 governin
