Cause of frequent trip of Schneider leakage switch

1. Bad device

Each pile lead wire is not firmly connected, long-term loose, will cause the pile head heat, oxidation, burn the outer insulation of the wire, and announce the spark and coke taste, the formation of line undervoltage, air switch action.

2. The leakage switch does not match the load

The actual household load is greater than the rated current of the low-voltage circuit breaker on the line. Generally produced in the new device or newly made air conditioning, electric water heater and other high-power household appliances. It is necessary to replace the matching air switch.

3. Electrical or circuit leakage, short circuit

When electrical leakage is found, as long as the plug of the electrical leakage fault is unplugged, and then the low-voltage circuit breaker can be powered on. If the circuit leakage or short circuit is found, it is necessary to ask the power I to deal with it. After the low-voltage circuit breaker is opened, disconnect all branches and then close them one by one for power supply. When a circuit is closed, the low-voltage circuit breaker cannot be powered on, that is, the branch is faulty, should be disconnected from this road, close the other branch power supply. Find out the fault of the branch, after the repair of the power supply.

4. The input cable voltage is too high

This is very dangerous, generally produced in the three-phase four-wire system of power supply in residential buildings. At this point, see if the line is live on both wires; Second, see whether the neighbors are also tripping; Three use a multimeter to measure the star incoming line voltage. Do not forcibly close the low-voltage circuit breaker, otherwise light will burn electrical appliances, heavy will cause fire.

5. The leakage circuit breaker is faulty

Check the quality of the leakage circuit breaker first. One is to check the leakage trip device, a general use of the experimental button to check, in the press of the experimental button, because I1 shunt, so that I1 and I2 are not equal, that is, phasor and not zero, therefore, leakage circuit breaker should act, trip sensitive; The second is to check whether the leakage circuit breaker can be closed in no-load state. If it cannot be closed, the leakage circuit breaker is faulty and cannot be used. It should be replaced (do not advocate self-repair).

6. The leakage circuit breaker is incorrectly connected

Check whether the phase line of a certain electrical equipment is connected to the front of the leakage circuit breaker, so that part of the load is not through the leakage circuit breaker, so that the leakage circuit breaker N line current is greater than the phase line current, so that the trip, and even can not close the gate.

7. Electrical equipment leakage

At this time, the metal shell of the equipment is charged, and the measuring pen can be used to check and find out the fault.

8. Connect the N wire and PE wire to the socket inversely

If the connection is reversed, zero sequence current will be formed, causing leakage circuit breaker action.

9. The N wire of a lamp in the lighting circuit is taken from the socket circuit

Modern homes are already multi-loop power supply, lighting and socket power supply, lighting circuit breaker control, socket with leakage circuit breaker control. If the N wire of an individual incandescent lamp in the lighting circuit is taken from the socket circuit, this connection forms a zero sequence current, causing the leakage circuit breaker to operate. When viewing, the socket power supply can be blocked (phase line and N line blocked together). If an incandescent lamp is not bright (after viewing the phase line is electric and there is no voltage between the phase line and neutral line), you can confirm that the N line of the lamp is taken from the socket loop. In this position, you can find the neutral line access point, wiring from scratch, you can deal with the problem.

10 line caused by damp leakage and tripping

Check the junction boxes in the kitchen and bathroom circuits. Open the junction box affected by moisture, the street inside is wet, there are drops of water covering this, individual pipe mouth is still dripping, this is the damage of the waterproof layer on the top, caused by water entering the electrical pipeline. At this time, we should open all the junction boxes and switch boxes related to it, do natural drainage, natural dry treatment, and wrap the insulation of all joints from scratch, the natural dry line for 1-2 days, we can deal with the problem of leakage (together with the treatment of water leakage in the upper waterproof layer), return to normal power supply. About new buildings, because it is not completely boring, the line is more simple and damp, should look at all rooms.