CSA C22.2-NO.205:2017 pdf download.Signal equipment
1.1 CSA C22.2-NO.205 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
a) nominal system voltage of 120 V for household use;
b) nominal system voltages up to 600 V for commercial and industrial use; and
c) double insulated equipment up to 240 V.
in non-hazardous locations in accordance with the rules of the Canadian Electrical Code, Part 1.
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:
a) are inter-connected in a wireless sensor network (WSN) in a local network;
b) communicate with local devices that are either wired or wireless.
1.14 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 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 alternative 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-mandatory) to define their application.CSA C22.2-NO.205 pdf download.