Using silicon controlled cascade speed regul ation can realize smooth infinite speed variation, which promotes the high-yiel d and high-efficiency and economized production of the modernized mines and bri ngs about obvious economic benefit.

• 利用可控硅串级调速可实现平滑无级调速,从而促进现代化矿井的高产高效及节约化生产,带来显著的经济效益。