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1概述三相交流异步电动机是广泛应用的动力设备,煤矿大部分采掘运输设备都是采用三相交流异步电动机拖动的。电机的功率已达200KW以上;电压等级有380V、660V、1140V和6000V;据调查统计,每年由于电动机的烧损给煤矿带来的损坏是巨大的,所以弄清电机烧损原因,采取必要的防范措施,
1 Overview Three-phase AC induction motor is a widely used power equipment, mining equipment, most of the mining equipment are used three-phase AC asynchronous motor drag. The power of the motor has reached over 200KW. The voltage levels are 380V, 660V, 1140V and 6000V. According to the survey, the damage to the coal mine caused by the burning of the motor is huge every year. Therefore, it is necessary to understand the reason of the motor burning and take the necessary Precautions,