IEC？60034-27-4:20 18提供了旋转电机定子和转子绕组绝缘的绝缘电阻和极化指数测量的推荐测试程序。本文件推荐的绝缘电阻和绕组绝缘极化指数的最小可接受值适用于额定功率为750？W或更高。

IEC？60034-27-4:2018 provides recommended test procedures for the measurement of insulation resistance and polarization index of stator and rotor winding insulation of rotating electrical machines. This document recommends minimum acceptable values of insulation resistance and polarization index of winding insulation valid for fully processed low and high voltage AC and DC rotating electrical machines with a rated power of 750？W or higher.