1. Electric leakage protection socket can effectively prevent the human body from electric shock. In case of electric leakage accident of household appliances or electrification of equipment shell, the power can be effectively cut off to ensure the safety of users.

2, leakage protection socket is a kind of special line is used in the detection of the leakage of relay protection device, in normal circumstances, the electric current to flow from the line of fire to the zero line, the ground not current, so the wire and the zero line current is equal, the two equal current generated by the magnetic field inside the leakage protector on the zero sequence current transformer of offset each other, so the transformer secondary no induced voltage is generated.When the electric leakage occurs, part of the current will flow away through the ground wire, causing the current of the fire wire to be greater than the current of the zero line, which will generate induced voltage in the secondary coil of the zero-sequence transformer. After the voltage signal is amplified by the amplifier circuit, the power supply (tripping) will be cut off immediately to prevent electric shock.