Three-phase low-voltage phase sequence measurement module

A three-phase low-voltage phase sequence measurement module belongs to the field of power systems. The objective of the invention is to solve the problem that there is no module for measuring the low-voltage three-phase phase sequence in the prior art. The three-phase measurement access terminal is connected into a three-phase low-voltage loop, and the three-phase measurement access terminal is used for collecting three-phase input voltage and transmitting the three-phase input voltage to the alternating-current phase-shifting electronic circuit; the alternating current phase shift electronic circuit is used for sequentially performing phase shift, isolation and rectification on the three-phase input voltage and then outputting direct current phase sequence voltage and transmitting the direct current phase sequence voltage to the phase sequence measuring terminal; and the phase sequence measuring terminal is used for outputting a voltage amplitude and detecting whether the three-phase input voltage is a posit