The main difference between three-phase and single-phase gearmotors is that the voltage and phase are different.

Three phases are three Single-phase electric power, but in terms of phase, one is ahead and the other is behind, and the angle is 120 degrees. In terms of voltage, single-phase is generally 220V, 50HZ. The three-phase voltage is generally 380V and 50HZ.

In some countries, it is single-phase 110V, three-phase 460V, 60Hz. The three-phase four wire system represents three power lines, and the zero line has no electricity. The function of the zero line is relative to the three phases. It can form a Single-phase electric power with any phase, and the voltage is 220V. The premise is that the Three-phase electric power is 380V. Three pins have one more ground wire than two pins, that is, PE wire. The three legged one is not three-phase, it is two-phase. Two phase three wire system, three phase five wire system. The three-phase consists of five wires: L1, L2, L3, N, and PE.

Some electrical appliances have low power and do not need to be grounded. Any electrical appliance that needs to be grounded must be used at the end of each pin in order to have a grounding function. The three-phase asynchronous motor uses a 380V power supply, and there are various power sizes and types. Single phase motors use 220V power supply, and all of them are low-power. The maximum power supply is only 2.2KW. For example, three-phase reduction motor, three-phase reduction motor, single-phase reduction motor, single-phase reduction motor, etc