What is the difference between the single phase, two phases and three phases of the diesel generator set?

The power plant is issued three-phase alternating current. Each phase difference is 120 degrees, a common three-phase line, and the voltage of each line is 220V. Single phase refers to the one of these three AC electricals. The voltage between the phase line and the neutral line is 220V, the voltage between the two-phase line is 380V, and the electric grid is generally used in three-phase four-wire or three-phase five-wire system. Three-phase four-wire finger three phase line plus a zero line. Three-phase five-wire system refers to three phase lines plus a zero line and a protected line.
The city electric generator also has three phases and single phase points. Three-phase power generation has 3 liberal groups. It has a voltage of 380V, a single-phase generator only a single-phase winding, a voltage of 220V, and a generator set is designed as a few phases, mainly related to the application. The large generator sent to the grid is three phases. Some factories, small generators used in corporate families are generally single.
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