Is the 380V single-phase AC motor the same as that of the 220V AC motor?
First of all, we should understand the meaning of alternating current, that is, the line of fire. There are four lines in the alternating current power supply 380V line, one of which is the zero line. Suppose that A, B, C [phase line], D [zero line], referred to as "three-phase four wire", in the three-phase any one phase line and D line [zero line] combination is referred to as "single-phase second-line"". Three-phase four wire power also referred to as "380V", also referred to as the single-phase two-wire 220V electricity; if it is 380V should be called the motor three-phase AC motor, if 220V motor can be called single-phase AC motor, the motor wiring is of course quite different. If the three-phase AC motor is not in phase (or bad), it can not work. If the single-phase AC motor is wrongly connected to the 380V, the second phase is very dangerous, and the motor will be burned immediately.
Two of the same pulse magnetic field is formed in time and space, so that a rotating magnetic field produces the air gap between the stator and the rotor, the rotating magnetic field, the induced current in the rotor current, and rotating magnetic field interact to produce electromagnetic torque, the motor rotation.
The single-phase motor has two windings, that is, the starting winding and the running winding. The two windings are 90 degrees apart in space. On a starting winding connected in series with a large capacity capacitor, when running and starting winding winding by single-phase alternating current, because the capacitor make the starting current in the winding in time than the current running winding advance angle of 90 degrees, the first to reach the maximum.
Dissimilarity。 220V is followed by a line of fire, a zero line. 380V's got two fire lines.
