【摘要】 针对３８０Ｖ低压不接地系统中电动机的单相接地故障，提出了一种通过外加直流电流进行定位检测的方法，并分析了外加直流信号对运行电动机的影响，讨论了该方法的一种实现方案。更多还原

【Abstract】 In this paper, a feasible locating detection approach detecting motor’s single phase earth fault occurring in the 380V three phase earth free powersystems is presented. The adscititious DC current’s influence on running motor is analyzed, and a device which can detect the fault is introduced.更多还原