scope:

This Standard specifies the test methods to be used in measuring the energy efficiency of three-phase induction motors in support of a consumer/user information program.

The method of determining and marking the nominal efficiency values are also specified.

This Standard applies to three-phase induction motors rated 0.746 kW at 1800 r/min (or equivalent*) and greater.

*An equivalent motor is a motor with the same torque output but with different kilowatt output and speed. Torque varies as kilowatts per revolutions per minute.

The test methods detailed in this Standard for three-phase induction motors are segregated in relation to specific kilowatt ratings according to the following

This Standard does not apply to liquid-filled motors such as submersible motors