Three-phase high-power servo type voltage-stabilizer intelligent protective device

The utility model provides a three-phase high-power servo type voltage-stabilizer intelligent protective device, and belongs to the technical field of power supply control. The three-phase high-power servo type voltage-stabilizer intelligent protective device comprises an input sampling module, a contactor, an output control module, a master control module, a wide-range power supply, a motor unit, a signal feedback module, and an uninterrupted power supply. Three-phase AC input voltage signals are acquired to the master control module by the sampling module, the master control module outputs corresponding control signals via control and processing according to the signals outputted by the input sampling module, the output control module drives the motor unit, and the protection of a servo type voltage-stabilizer and an external load is realized. The three-phase high-power servo type voltage-stabilizer intelligent protective device is advantageous in that the whole operating process is automatically accomplished, manual control is not needed, the internal control circuit of the servo type voltage-stabilizer can be prevented from being damaged, and the damage to the voltage-stabilizer and the external load due to outage, under-voltage and over-voltage are prevented.