“东风31型电动凿岩机”配套的2千瓦水外冷工频电机，自76年鉴定投产后，在地质部门广泛使用。几年来，我们对电机结构又进行了一些改进。从今年开始已按改进过的结构生产。本文将配套电机的性能、结构和运行注意事项作一个扼要的介绍。一、电机的性能规格本电机采取水外冷型式三相交流鼠笼型异步电动机。2极，2840转/分；频率：50赫芝；额定电压：380伏，Y接；额定电流：5.04安，E级绝缘；定子温升：72℃（电阻法）；工作方法：连续。 “Dongfeng 31 electric rock drill” supporting the 2 kilowatts water cooling frequency motor, appraisal since 76 put into operation, widely used in the geological sector. In recent years, we made some improvements to the motor structure. From the beginning of this year, the structure has been improved according to the production. This article will be supporting motor performance, structure and operating considerations for a brief introduction. First, the motor performance specifications This type of motor to take the water cold three-phase AC cage squirrel-cage induction motor. 2 pole, 2840 rev / min; Frequency: 50 Heizhi; Rated voltage: 380 V, Y then; Rated current: 5.04 A, Class E insulation; Stator temperature rise: 72 ℃ (resistance method);