由太原重型机器厂研制的起重机用交流可控硅定子调压调速系统于1989年10月在太原通过技术鉴定。该系统的调速范围达1:10以上,连续可调速度范围为0～60%额定转速,速度波动率≤5%,正反转切换时间≤250毫秒,适用于300次/时的工作制。可广 Developed by Taiyuan Heavy Machinery Factory Crane SCR AC voltage regulator speed control system in October 1989 in Taiyuan passed the technical appraisal. The speed range of the system is up to 1:10, the continuous adjustable speed range is 0 ~ 60% of the rated speed, the speed fluctuation rate is less than or equal to 5%, the positive and negative switching time is less than or equal to 250 milliseconds, which is suitable for the working system of 300 times / hour . Can be widely