本推荐规程涵盖工业和商业电力系统中使用的电机保护。对于在保护和控制领域经验有限的电力工程师来说，这可能是最有价值的。它还可以帮助所有负责工业和商业电力系统电气设计的工程师。

This recommended practice covers the protection of motors used in industrial and commercial power systems. It is likely to be of greatest value to the power-oriented engineer with limited experience in the area of protection and control. It can also be an aid to all engineers responsible for the electrical design of industrial and commercial power systems.