Is 380V AC contactor coil 380V?

Is 380V AC contactor coil 380V?

Not necessarily, the main circuit 380V AC contactor of the minimum coil voltage 36V, depending on the control requirements

Why 380V electricity. Take a line at random to connect a zero line can light up, but it turns into 220V lighting

In fact, 380V refers to the line voltage, that is, the voltage between each two phases of three-phase electricity. The phase voltage of each phase is 220V, and the relationship between the phase voltage and the line voltage is about 1.732 times. Therefore, we regard the voltage of 380V as the line voltage of three-phase electricity, while the two-phase electricity often refers to a live wire and a zero wire, and its 220V is the phase voltage. When a group of zeros forms a return lamp, it will be on

How to change 380V motor into 220V motor, the best wiring diagram! Thank you

The capacity can not exceed 1.5KW. After the connection, the capacity will be reduced by 1 / 3

In the 220 V, 380 V circuit, when there is no load, what is the insulation resistance between the phase lines, the phase line and the ground line, and the zero line

According to the relevant requirements of GB 50303-2002: 18.1.2 insulation resistance of low voltage wires and cables, between wires and between wires and ground must be greater than 0.5 megohm