Three phase voltage regulator is a large voltage auxiliary power supply developed and produced for 380V industrial power. Generally, the minimum three-phase voltage stabilization is 10KVA to thousands of kVA. Among them, the three-phase voltage regulator and line access are all three-phase electricity, nor is it a three-phase live line and a zero line.

Three phase regulators are generally connected to large industrial production equipment, and the conventional wiring method of this kind of electrical equipment is: three live wires, one zero wire and ground wire, with a total of five line inputs. For some special equipment, there may be three live wires and one ground wire, or even only three live wires.

For household appliances, it is generally single-phase input, and the general lines are divided into one live line and one zero line. For appliances with slightly higher power, there is one live line, one zero line and one ground line respectively. The household voltage is 220V, so we choose the voltage regulator. If it is a household voltage regulator, we choose the single-phase voltage regulator. The difference between single-phase regulator and three-phase regulator is that the voltage output and input of single-phase regulator are connected with a live line and a zero line.

Summary: the three-phase voltage regulator is an industrial 380V voltage regulator, while the voltage of the household voltage regulator is 220V, so the three-phase voltage regulator cannot be used at home.