380 volts of electricity is equivalent to a three-phase alternator. In general household circuits, the generator voltage is 220 volts alternating.
Three-phase alternating current is a power system consisting of three alternating current circuits with the same frequency, equal potential amplitude and phase differences of 120° relative to each other. Currently, we produce and distribute three-phase alternating current.
It is a combination of three symmetrical sinusoidal alternating currents with a phase difference of 120° relative to each other. It is produced by three sets of symmetrical windings of a three-phase generator. Each winding with its external circuit is called phase, marked A, B and C respectively. Their combination is called three-phase system, and power is often supplied in three-phase three-wire system and three-phase four-wire system, it is i.e. thetriangle connection and star connection.
The three-phase power supply has two connection methods: star and delta on the power side and the load side. Both connection methods will have three three-phase transmission lines and three power supplies (or loads), but the methods of connecting the power supplies (or loads) are different.
The voltage in the three-phase four-wire system of daily electrical system is 380/220V, that is, the line voltage is 380V, the phase voltage varies according to depending on the wiring method: whether it is a star connection; is used, the phase voltage is 220 V; the phase voltage is 380 V;
380V voltage can be connected to 220V electrical appliances, but it needs to be changed.
The voltage between the live wire and the neutral wire is 220 volts, and the voltage between the live wire and the ground wire is also 220volts. You can make a stake on the ground for temporary use of electricity. In addition, the ground pile must be carried out by professionals.
Renovation method: Pseudo-zero line
Remarks on ground piles: Use a No. 4 galvanized steel angle to sharpen one end as a ground electrode and drive it vertically into the ground for a depth of at least 2 meters, galvanized flat steel for connection and the earthing resistance should be less than 4 ohms when completed.
Detailed information:
The so-called 380 volt power supply and the 220 volt power supply are not at all the same thing. voltage difference. The 380 volt power supply is a three-phase power supply with a 120 degree phase difference between each phase, while the 220 volt power supply is just an ordinary single-phase AC power supply.
There are fundamental differences in the principlesbasic conditions between electrical appliances powered by 380 volts and electrical appliances powered by 220 volts, they cannot therefore be replaced. Note that this is the case in most cases!
p>< p>In a few cases this is theoretically possible by taking appropriate technical measures. For example, a small capacity three-phase 380-volt AC motor can run with a 220-volt supply and an AC capacitor.
You can also use a 220 volt supply to drive a 380 volt three phase alternator to generate 380 volts of power, or you can boost, rectify and reverse the 220 volts of power. power into a 380 volt three phase AC supply, etc., but they are all limited to low power.