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由天津电气控制设备厂生产的 KDG—75/500型可控硅低频电源装置安装在淮北矿务局石台煤矿630千瓦的主井绞车上,经过三个多月的现场调试,于79年9月正式投入工业性试验。淮北石台煤矿的主井绞车系 XkT2×3×1.5B—11.5型双滚筒提升机;TKD—A型电控设备;主电机630千瓦、6千伏。该矿曾于77年4月配上低频发电机组进行绞车的低频制动和爬行,实现了绞车提升半自动化。
KDG-75/500 SCR low-frequency power supply unit manufactured by Tianjin Electric Control Equipment Factory was installed on the main shaft winch of 630kw in Shitai Coal Mine of Huaibei Mining Bureau. After more than three months of site commissioning, Month officially put into industrial test. Main shaft winch of Xitai coal mine in Shitai Coal Mine of Huaibei is double-drum hoist XKT2 × 3 × 1.5B-11.5; TKD-A electric control equipment; main motor 630 kW, 6 kV. The mine was in April 77 coupled with low-frequency generator winch low-frequency braking and crawling, to achieve semi-automatic lifting winch.