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矿井提升机大多配备YR型绕线式异步电动机。提升机的起动和调速,由转子绕组通过滑环、电刷和外接电阻进行控制,既有磨擦接触,又有很多接点和端头,而提升机正反向与重负载起动频繁,如果电机制造工艺质量较差或现场维修注意不够,转子回路很容易发生程度不同的不平衡故障。1983年我矿副暗井绞车YR630型电动机就发生过三起这类故障。其一,7—12暗井,3m绞车,电机转速745r/min,转子电压943V,转子电流416A,定子电压6000V,定于电流82A。83年5月某日
Most of the mine hoist equipped with YR type wound induction motor. Hoisting machine start and speed control by the rotor winding slip ring, brush and external resistance control, both the friction contact, but also a lot of contacts and ends, and lift the positive and negative and frequent heavy load start, if the motor Manufacturing process quality or on-site maintenance is not enough attention, the rotor circuit is very prone to varying degrees of unbalanced failure. In 1983, mine mine co-blind winch YR630 motor occurred on three such failures. First, 7-12 dark wells, 3m winch, motor speed 745r / min, rotor voltage 943V, rotor current 416A, stator voltage 6000V, set at 82A. May 83 a certain day