MZ series autovacuum starting control cabinet is suitable for three-phase squirrel-cage induction motor with AC 50HZ, rated voltage 380V, rated output power 500KW and below, for infrequent condition voltage reduction starting; Using the characteristics of autotransformer step-down, the starting current of the motor is reduced, and the motor is accelerated to close to the rated speed to ensure the normal operation of the motor. The output end of the autobuck has 65%, 80% output choice. The output end of the autotransformer is selected according to the load weight of the motor and the distance between the motor and the control cabinet. The motor current can be adjusted by the thermal overload relay, and the switching time of the motor from starting to running can be adjusted by the time relay. The circuit has short circuit, undervoltage, overload and break equal protection, and can be manually separated from the power supply circuit of the power breaker. Suitable for the control of heavy-duty low-voltage motor, such as jaw crusher, cone machine, water pump and other equipment.
