How to connect the three wires of the three-phase motor? How should the three wires be connected?

The connection method of the three-phase power line is similar to that of the ordinary three-hole socket line, but because the three-phase power lines are all live wires, you should pay attention to the power angle when connecting, keep the power angle of 120 degrees, and make the three live wires symmetrical The arrangement can be connected to the motor.

Three-phase electricity, electrical wiring methods include three-phase three-wire, three-phase four-wire, three-phase five-wire, etc. The first category usually only supplies power to three-phase motors. The second type is the most common, adding a zero line. The third category adds a dedicated protective ground wire. The voltage between phase lines is 380v, and the voltage between phase zero is 220v. There is generally no order in the wiring of electrical appliances. If the motor is reversed, just exchange two of them.

Three-phase Range hood fan motor related wiring method:

1. Star connection:

The star connection method of three-phase motor is to connect one end of each phase power supply or load to one point, and the other end of them is used as a lead wire, which are three phase wires of three-phase electricity. For star connection, the midpoint can be drawn out as the neutral line to form a three-phase four-wire system. It can also not be drawn out to form a three-phase three-wire system.

2. Triangle connection:

The delta connection method of a three-phase motor is to connect the power sources or loads of each phase end to end in turn, and draw out each connected point as the three phase lines of the three-phase electricity. The delta connection method has no neutral point and no neutral line can be drawn, so there is only a three-phase three-wire system. After adding the ground wire, it becomes a three-phase four-wire system.