C22.2 No. 205-17

Signal equipment

REVISED MAY 2020

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  C22.2 No. 205-17, Signal equipment

  
  

  Errata — May 2020	Revision symbol (in margin)
  Figures 1, 2, 3, 4, and 5	∆

  
  

  Errata — December 2017	Revision symbol (in margin)
  Subcommittee on Standard Signal Equipment	∆

  
  

  Errata — June 2017	Revision symbol (in margin)
  Subcommittee on Standard Signal Equipment Clause B.4.8	∆

  
  

  C22.2 No. 205-17

  May 2017

  
  

  Title: Signal equipment

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C22.2 No. 205-17

Signal equipment

®A trademark of the Canadian Standards Association, operating as “CSA Group”

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Contents

Technical Committee on Consumer and Commercial Products 4

Subcommittee on Standard Signal Equipment 6

Preface 8

1. Scope 10

   
   

2. Reference publications 11

   
   

3. Definitions 15

   
   

4. Construction 17

   1. General 17

   2. Enclosures 17

   3. Supply connections 19

   4. Signal equipment mounted on outlet boxes 20

   5. Bonding 20

   6. Strain relief 20

   7. Bushings 20

   8. Wiring 21

   9. Electrical insulation 21

   10. Double insulation 21

   11. Direct plug-in signal equipment 23

   12. Fuses 23

   13. Isolating circuits 23

   14. Switches, controls, and lampholders 24

   15. Batteries 24

   16. Capacitors 24

   17. Attachment plugs and receptacles 25

   18. Swivel joints 25

   19. Spacings 26

   20. Safety functions implemented through electronics 28

   21. Power supply 30

   22. Connection to telecommunication network 31

   23. Components in communication applications 31

   24. Surge suppression 31

   25. Motors 31

   26. Access control 31

   27. Energy management 32

   28. Electrically operated valves and actuators 32

   29. Thermal endurance of electronics 32

       
       

5. Marking 32

   
   

6. Tests 34

   1. General 34

      
      

      May 2017 © 2017 Canadian Standards Association 1

   2. Rating and operation test 35

      1. Rating 35

      2. Operation test 35

   3. Temperature test (normal operation) 36

   4. Temperature test (abnormal) 36

      1. Direct plug-in equipment 36

      2. Other signal equipment 36

   5. Dielectric strength 37

   6. Leakage current 37

   7. Strain relief 39

   8. Across-the-line capacitors 39

      1. General 39

      2. Discharge test procedure 39

      3. Fire hazard 40

      4. Expulsion hazard 40

      5. Life 40

   9. Evaluation of coatings on printed circuit wiring boards 41

      1. General 41

      2. Dielectric strength on new samples 41

      3. Dielectric strength after temperature conditioning 42

      4. Dielectric strength after humidity conditioning 42

      5. Adhesion 42

   10. Swivel test 42

   11. Direct plug-in equipment impact test 42

   12. Flame test for polymeric enclosures 43

   13. Electrolytic capacitors 43

   14. Isolation capacitors and networks 43

   15. Moisture absorption 43

   16. Impact test 44

   17. Limited short circuit test 44

   18. Overload and endurance 44

       1. General 44

       2. Overload test 44

       3. Endurance test 45

       4. Thermal endurance test 45

   19. Abnormal testing 46

   20. Immunity requirements 47

       1. Surge immunity test 47

       2. Burst immunity test 48

       3. Power frequency magnetic field immunity test 49

          
          

7. Signal sensing devices and power supplies installed in meter-mounting accessories 49

   
   

8. In-line UV water sterilizers and similar appliances 49

   
   

9. Toxic gas detector 50

   
   

10. Radon gas detector 51

May 2017 © 2017 Canadian Standards Association 2

Preface

This is the third edition of CSA C22.2 No. 205, Signal equipment, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes the previous editions published in 2012 and 1983.

This edition updates the 2012 edition of CSA C22.2 No. 205. The updates include the expanded scope to cover components that monitor and control activity and the equipment powered by an energy limited Class 2 power supply.

The updates are intended to provide clarification for many new signal applications that are now in use. This edition also incorporates the new requirements for ozone, toxic gas and radon detectors.

For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of the latest edition 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 the Subcommittee on Standard Signal Equipment, under the jurisdiction of the Technical Committee on Consumer and Commercial Products and the Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the Technical Committee.

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. When the literal text cannot be applied to the product, such as for new materials or construction, and when a relevant CSA committee interpretation has not already been published, CSA Group’s procedures for interpretation shall be followed 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 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 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 that 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 inquiries@csagroup.org and include “Request for interpretation” in the subject line:

   1. define the problem, making reference to the specific clause, and, where appropriate, include an illustrative sketch;

   2. provide an explanation of circumstances surrounding the actual field condition; and

   3. where possible, phrase the request in such a way that a specific “yes” or “no” answer 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 within five years from the date 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 inquiries@csagroup.org and include “Proposal for change” in the subject line:

   1. Standard designation (number);

      
      

      May 2017 © 2017 Canadian Standards Association 8

   2. relevant clause, table, and/or figure number;

   3. wording of the proposed change; and

   4. rationale for the change.

May 2017 © 2017 Canadian Standards Association 9

C22.2 No. 205-17

Signal equipment

1 Scope

1.1

This Standard covers the electrical, fire, and shock hazard requirements for all permanently and cord- connected signal equipment intended for household, commercial and industrial use operating at

1. nominal system voltage of 120 V for household use;

2. nominal system voltages up to 600 V for commercial and industrial use; and

3. double insulated equipment up to 240 V.

   in non-hazardous locations in accordance with the rules of the Canadian Electrical Code, Part I.

   
   

   1.2

   The requirements are not intended to replace other requirements that are mandated by provincial, federal, or authorities having jurisdiction for aspects other than electrical fire and shock hazards, nor do they specify the performance of signal equipment.

   Notes:

   1. While this document does not address the performance aspects of signaling equipment it does specify requirements for the electrical safety of these devices, including functional safety.

   2. Devices that generate radio frequency signals may also be subject to the requirements of Industry Canada.

      
      

      1.3

      This Standard covers equipment that performs a sensing and/or signaling function to convey alarm, trouble, status, or event-based information to the user and any subsequent associated activation function. The signal equipment may be stand alone or a part of a larger system. Signaling may employ wired or wireless means.

      Note: The equipment can employ audible, visual, motion, or other signaling means such as chimes, gongs, lights, and displays.

      
      

      1.4

      This Standard applies to energy management equipment including sensing, monitoring, and actuation devices. The requirements also apply to home automation systems. The signal sensing components meeting the requirement of this Standard can be included in a smart grid application for energy management, other than for industrial applications.

      
      

      1.5

      This Standard applies to components that monitor and control activity, and which are:

      1. are inter-connected in a wireless sensor network (WSN) in a local network;

      2. communicate with local devices that are either wired or wireless.

1.6

This Standard also applies to equipment powered by an energy limited Class 2 power supply.

May 2017 © 2017 Canadian Standards Association 10