Connection:

Connection of leakage switch.The phase-leakage switch is a three-phase, four-wire system that is now commonly used. Three live wires (red, green, yellow) and one zero wire (blue) have a voltage of 380 volts between them, and each live wire has a voltage of 220 volts between them.Single-phase leakage switch general wiring, write left fire right zero, in accordance with the connection.No matter three - phase or single - phase leakage switch is: the top line in, the bottom line out.

Testing:

Generally press the test button is enough to detect whether the leakage of electricity, the principle of the leakage protector is to detect whether the alternating current from the hot line to the zero line of one in and one out of the current is consistent to determine whether the action trip.

There are safe ways to test, but only if you have a home with a ground cord:

Find a three-pin socket and connect a resistor, capacitor (in series) and the other end to the ground pin on the L (standard electrical walk L wire) symbol.Because the electricity flows through the earth wire to walk, the leakage protector detects that the fire wire enters the current is larger than the zero line to return the current, therefore the action, tripping!

Capacitor can be used on the fan capacitor, the resistance to choose a 10 ohm above 1 watt resistance, after finishing the resistance and capacitor knot with insulation tape.