GB/T 755.2-2003 Methods for determining losses and efficiency of rotating electrical machinery from tests(excluding machines for traction vehicles) (English Version)
This part applies to all DC motors, AC synchronous motors and AC induction motors within the scope specified in the national standard GB 755-2000. The principles are also applicable to other types of rotating electrical machines, such as rotary converters, AC commutator motors, and AC single-phase induction motors, where losses are usually determined by other methods.
GB/T 755.2-2003 history
2003GB/T 755.2-2003 Methods for determining losses and efficiency of rotating electrical machinery from tests(excluding machines for traction vehicles)