Connection method and working principle of phase sequence protector

Phase sequence protector is a kind of power protection device, which can prevent equipment failure caused by power phase sequence error. The wiring method of phase sequence protector is relatively simple, just connect it between the phase line and zero line of power supply, and then connect the equipment according to the correct phase sequence.

The working principle of phase sequence protector is to judge whether it is consistent with the phase sequence required by equipment by detecting the phase sequence of power supply. If the phase sequence is inconsistent, the phase sequence protector will cut off the power supply to prevent equipment damage and accidents. The phase sequence protector can also prevent the faults caused by lack of phase and wrong phase of power supply, and improve the safety and reliability of equipment.

Phase sequence protectors are widely used, such as air conditioners, elevators, pumps and other large equipment, as well as industrial automation control systems. In these fields, phase sequence protectors can effectively protect equipment from power failure and improve the stability and reliability of equipment.