The paper analyzes some main problems existed in electric control of the A. C. winder in Wangchao coal mine and introduces the improving way and effects.
分析了王晁煤矿提升机电控存在的主要问题，介绍了改进方法和效果。
2
In this paper the researching results of our group about the electric control of Flameproof Winder are Introduced.