What is Three Phase Electricity？

Three-phase electricity is three phase wires, and the voltage between the three wires is 380v, which is used for three-phase power supply equipment, such as three-phase motors. Two-phase electricity is two phase wires, and the voltage between the wires is also 380v. Generally, AC welding machines are used more. Single-phase electricity is composed of a phase line and a zero line, the voltage is 220v, mainly used for household appliances.

Generators that can generate potentials with equal amplitude, equal frequency and 120° phase difference are called three-phase generators.

Using a three-phase generator as a power source is called a three-phase power source.

A circuit powered by a three-phase power supply is called a three-phase circuit.

U, V, W are called three-phase, and the voltage between the phases is the line voltage, and the voltage is 380V.

The phase voltage between phase and neutral is called phase voltage, and the voltage is 220V.