How To Convert Three Phase Electricity into Two-Phase Electricity? Wiring Method of Three-Phase Electrical to Two-Phase Electrical (2)

2. How to wire three-phase electricity into two-phase electricity?

When erecting the wires, the "three-phase four-wire" standard wiring is used. In layman's terms: three live wires and one neutral wire. The voltage of the three live wires is 380 volts, and any one of the live wires is matched with the neutral wire to form a voltage of 220 volts. Most of the electricity in the home is connected this way.

First of all, it depends on whether the three-phase power is four-wire or three-wire. If it is a four-wire system, three of the wires are live wires, and the remaining one should be thinner than the three wires, which is the neutral wire. If there are only three wires, then the zero wire is the ground you step on under your feet, that is, a wire is used to lead a wire directly from the ground.

The voltage between the three live wires of the three-phase electricity is 380V, but anyone live wire and the ground you step on under your feet are only 220V, which is my country's main electricity.

The simple connection method of three-phase electricity to two-phase electricity (judging the correctness by yourself, the consequences are at your own risk):

Green with blue, red with grey. The yellow and green wires are not connected for the time being. For safety reasons, we will buy a three-core wire and rewire it later.

3. The difference between three-phase electricity and two-phase electricity

Note: Only single-phase and three-phase electricity. There is no such thing as two-phase electricity.

A live wire and a neutral wire are single-phase 220 volts. Most of the household lighting electricity adopts this input wiring method.

The two live wires are single-phase 380 volts. BX series welding machines, resistance series welding machines, and current inverter DC dual power supply welding machines mostly use this input wiring method.

Three-phase 380 volts are single-phase 380 volts if one phase is missing. Nor can it be called two-phase electricity. The three live wires are three-phase 380 volts. Motors and most 380V electrical appliances mostly use this wiring method.

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, and W are called three-phase, 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.