Les commutateurs de transfert moyenne tension

1 Scope

1.1 These requirements cover automatic, non-automatic, and manual transfer switches, operating at voltages of 1000 V ac and higher, and intended for use in ordinary locations to provide for power as follows:

a) Automatic transfer switches for use in emergency systems in accordance with Articles 517,

Health Care Facilities, 700, Emergency Systems, 701, Legally Required Standby Systems, and 702, Optional Standby Systems of the National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1); and the Health Care Facilities Code, ANSI/NFPA 99 (refer to Annex A, item 12).

b) Transfer switches for use in optional standby systems in accordance with Article 702 of the

National Electrical Code, ANSI/NFPA 70 (refer to Annex A, item 1).

Note: Automatic transfer switches for optional standby systems are not recognized in Canada.

c) In legally required standby systems in accordance with Article 701 of the National Electrical

Code, ANSI/NFPA 70 (refer to Annex A, item 1).

Note: Legally-required standby systems are not recognized in Canada.

d) Automatic transfer switches for use in accordance with the Standard for the Installation of

Stationary Pumps for Fire Protection, ANSI/NFPA 20 (refer to Annex A, item 2).

e) Non-Automatic transfer switches for use in accordance with Articles 517, Health Care

Facilities, and 702, Optional Standby Systems of the National Electrical Code, ANSI/NFPA 70

(refer to Annex A, item 1); and the Health Care Facilities Code, ANSI/NFPA 99 (refer to Annex

A, item 12).

f) In Canada, general requirements as indicated in the General Requirements – Canadian

Electrical Code, Part II, CSA C22.2 No. 0-10 (refer to Annex A, Item 3), are also applicable.