Electric Heating Tube Three-Phase Connection

In a 380 volt three-phase four-wire circuit, the voltage between any two live wires is 380 volts, and any one of the live and neutral wires can form 220 volts.

This system can form three kinds of power sources: single-phase 220 volt power supply, single-phase 380 volt power supply, three-phase 380 volt power supply, the first kind of household is more, the third kind of motor is much used in the third factory, the second is used. Less, only AC welding machines often use a single-phase 380 volt power supply