Draft Details

1.1 This standard provides the minimum requirements for electric machines for use in hazardous locations in accordance with CSA C22.1, Canadian Electrical Code, Part I and NFPA 70®, National Electrical Code® (NEC®) as follows:

a) Class I, Division 2;

b) Class II, Division 2;

c) Class III, Division 1 and 2.

Note 1: The term “electric machine” applies to both motors and generators.

Note 2: In the US, the application “hazardous locations” is referred to as “hazardous (classified) locations”.

Note 3: NFPA 70®, National Electrical Code®, and NEC® are registered trademarks of the National Fire Protection Association, Quincy, MA.

1.2 This standard also applies to the same types of electric machines indicated in 1.1 for installation and use in Zone 2 or Zone 22 hazardous locations in accordance with CSA C22.1, Canadian Electrical Code, Part I and NFPA 70®, National Electrical Code® (NEC®).

Note: In US and Canada, the installation codes permit the use of appropriately rated Division 2 motors in Zone 2 and Zone 22 areas.

1.3 This standard applies to both horizontal and vertical electric machines that have fractional and integral horsepower ratings.

1.4 This standard applies to electro-mechanical brakes intended to either hold a stopped motor from turning or to slow a motor and load to a stopped condition.

1.5 This standard does not apply to the following electric motors and generators:

a) Intrinsically Safe;

b) Explosionproof;

c) Purged and Pressurized; or

d) Dust-Ignitionproof.