本标准涵盖了多相感应电动机和发电机更普遍适用和可接受试验的执行和报告说明。根据需要，所述的许多试验可同时适用于电机和发电机，且未尝试将试验程序划分为单独适用于电机或发电机的条款和子条款。无论何时使用术语“电机”，都应理解，如果适用，可以用术语“发电机”代替。同样，无论何时使用机器，如果适用，都可以用电动机或发电机代替。由于多相电力系统几乎都是三相系统，因此本标准中的方程式专门针对三相编写。当在三个以外的设备上进行试验时- 相位功率，应适当修改方程式。

This standard covers instructions for conducting and reporting the more generally applicable and acceptable tests of polyphase induction motors and generators. Many of the tests described may be applied to both motors and generators, as needed, and no attempt is made to partition the test procedure into clauses and subclauses that separately apply to motors or to generators. Whenever the term motor is used, it is to be understood that it may be replaced by the term generator, if applicable. Likewise, whenever machine is used, it may be replaced by either motor or generator, if applicable. Since polyphase power systems are almost universally three-phase systems, the equations in this standard have been written specifically for three phases. When the test is performed on other than three-phase power, the equations shall be modified appropriately.