China's mines are hoist AC Induction Motor Drive, and its electrical control system uses a rotor series, cutting speed resistance , by the relay - contactor control devices constitute a logical.
The motor- and control voltage is to be connected to a common network, where the sealing-in of the power contactor is cancelled in case of an interruption of circuit.
电动机和控制电压应连接到一个公用网，从这里，当发生电流断路时，电力开关的触点被断开。
3
The utility model discloses an energy consumption braking circuit of a three-phase asynchronous motor, which is composed of a three-phase asynchronous motor and a main controlcontactor.