After using it for a few years, the kitchen leakage protector suddenly tripped without load, how to

Leakage protector fault check steps.

1) Press the test button to see if it can be accurate, fast and reliable action, if it can show that the leakage is good, if it can't mean that the leakage is bad, it should be replaced in time.

2) If there are more circuits connected to the protector, you can only open the circuits that are known to be operating normally, and see if the leakage warranty is working.

3) If it is not possible to judge accurately, you can use the method of connecting the false load, disconnect all the loads of the leakage protector and connect the false load without fault, if the leakage action can determine that the leakage warranty has been damaged, and the leakage protector should be replaced.

2.If the defective warranty is still tripped after the replacement of the leakage, the inspection steps are as follows if the fault point cannot be determined quickly.

1) Check the main line of the circuit first, throw off all the branches, and use a megohmmeter to test the insulation. On the premise that it is confirmed that it is only a leakage fault and is not too serious, direct power transmission will not cause adverse effects.

2) After confirming that there is no problem with the main circuit, check each branch line, and check the same method as above.

3) After finding out the faulty branches, the load of the branch line is eliminated one by one.

4) Finally, find out the fault point, repair the power transmission and test operation.

Note: In the event of a leakage fault, frequent power transmission is not allowed without confirming the cause of the fault and troubleshooting. Otherwise, unintended and serious consequences may occur.

In the case of no load in the circuit, the leakage protector trips frequently, which indicates that the power supply line itself is faulty, the insulation of the line is reduced, and when the voltage is too high, there will be an instantaneous breakdown, which will trip, and can only be carefully checked or detected with the help of an instrument.

There is no load, the leakage protector trips, first remove the leakage protection line, if it also trips the problem is in the leakage protection internal circuit, if the line is removed it is normal, the problem is in the power supply line, the line has the phenomenon of leakage grounding.

Without load, the reason why the leakage protector trips frequently is that it is broken.

This is because there is leakage in the circuit, and the leakage protector will trip frequently.

1. The leakage protector trips normally: if the leakage switch with a rated leakage current of 30mA has a leakage current of more than 25mA in the load, the leakage switch will trip. Since it is safe for a current of 25mA to flow through the human body, no electric shock death will occur; In the same way, there will be no danger to the line or electrical equipment, and the operation of the electrical equipment will not produce abnormal phenomena.

In this case, without analysis, mistakenly think that there is a problem with the quality of the leakage switch, and arbitrarily remove the leakage switch, which is extremely wrong, after removing the leakage switch, see that the electrical equipment is working normally, it is considered that the removal is correct, which is a dangerous practice. 2. Abnormal tripping of leakage protector: It is caused by the unqualified quality of the leakage switch itself, which is divided into two categories: it cannot be closed and sometimes trips for no reason.

In the case that the leakage switch is connected to the power supply and not connected to the load, if it cannot be closed, it must be the quality problem of the leakage switch, and it must not be repaired by itself, because the technical performance test must be carried out after repair, and it is not safe to use it after testing with test equipment. The second type is occasional tripping, especially in the middle of the night or when no one is at home, which indicates that the anti-interference performance of the leakage switch is poor. The leakage switch with abnormal tripping should be removed and replaced with a good leakage switch.

3.If the leakage current of normal tripping fluctuates up and down at 25mA, the phenomenon is similar to occasional tripping, and the reason for the tripping of the leakage protector is often caused by the aging of the insulation of the wire, that is, it trips when the environment is wet, and it does not trip when the environment is dry. A reliable way to distinguish between normal and occasional tripping of this type is to measure the insulation resistance of lines and electrical equipment.

The standard stipulates that the insulation resistance of each wire shall not be lower, and the insulation resistance of electrical equipment shall usually be greater than that. If the total measured insulation resistance of the load connected to the leakage switch is less, then normal tripping will occur.

1.The rated action current of the air switch is too large and the maximum allowable current of the line does not match, and the line has not been short-circuited or has not reached the action current value of the air switch when it is overloaded or partially burned for a long time, so it does not operate. 2.

The air switch does not have a leakage protection function, so if the wire is not burned due to short circuit or overload, the air opening will not be activated in advance (including the combustion process is not short circuited). 3.Air switch quality problems.