What are the causes of leakage protector tripping? Leakage protector trip cause

Four reasons. 1. Poor installation of leakage protector If the terminal connection of the leakage protector is not firm during installation, the terminal will heat up and oxidize over time, and the wire insulation layer will be burned out, accompanied by the smell of ignition and rubber and plastic burning, which will cause the circuit to undervoltage and trip the leakage protector. Second, there is a problem with the leakage protector itself.

When purchasing leakage protectors, users should try to buy them from reputable designated manufacturers or stores. Don't buy some self-employed "three no" leakage protectors, often the gains outweigh the losses. Three.

With the popularity of household appliances, the load current of many families has far exceeded the rated current of the leakage protector on the line, resulting in the tripping of the leakage protector. This usually happens in the use of high-power household appliances such as air conditioners, electric kettles, etc. Generally, only a matching leakage protector can solve the problem.

4.If the leakage protector trips due to leakage or short circuit of the load such as household appliances, as long as the faulty household appliances are unplugged, the power can be re-transmitted; If the line leaks or short-circuits, it is more difficult. You can solve some simple faults first, so that some lines can temporarily resume power transmission.

Leakage protector tripping may be due to the following reasons:

The first reason: because the heavy load exceeds the rated load, it is an overload protection trip.

The second reason: because some electrical appliances have grounding phenomenon, they trip due to leakage protection. You can gradually plug in or open the electrical appliances, when opening a certain electrical appliance tripping, you must first check whether there is a suspicion of leakage, or high-power electrical appliances, the load has accumulated to exceed the rated load.

The third reason: check whether there is leakage can turn off or unplug other electrical appliances, open this piece separately, if it is turned on normally, it means that it does not leak, if it will also trip, it means that the problem is on this equipment.

The fourth reason: if there is no leakage equipment, it is a load problem, you can first see how big your air opening is (also pay attention to the allowable load of the meter), and then convert the total power of the electrical appliances you turn on in use, (refrigerators and air conditioners are calculated by whether the compressor starts), if it is indeed overloaded, it is impossible to adjust and avoid, it is necessary to consider the problem of meter expansion and air replacement.

The fifth reason: If it is not the above problem, then change to a new empty open with the same capacity to see if it is caused by empty opening failure or allergies.

The tripping of the leakage protector can be divided into two types: normal tripping and abnormal tripping.

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.

2. 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 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.

It may be that one of the power cables of your computer is connected with the ground wire, and it can be used downstairs, indicating that the wiring of the two sockets is inconsistent (the live wire and the neutral wire are reversed).

The old electrician concluded: the reason for the tripping of the leakage protector, after reading it, it will not cost money in vain: the customer electric kettle, the chassis water leakage tripped.

The reason may be that the electrical appliance has leakage and causes normal tripping, which can be solved by overhauling the electrical appliance; The reason may be that the electric field changes due to the harsh environment and the abnormal increase of the current, which can be solved by closing the electrical switch; The reason may be that the acceptable power of the protector is too small, and it is easy to trip, and it can be solved by replacing the protector with a larger power. 1. The normal tripping of the protector is because there is a leakage problem in the electrical appliance, and the protector induces static electricity and current on the surface of the electrical appliance, and it will immediately trip and cut off the power, which plays a protective role. At this time, the switch of the protector cannot be dialed, and you need to unplug the power supply immediately and find a professional electrician to overhaul the electrical appliances.

2. If the leakage protector trips in thunderstorm, it means that the thunder has caused changes in the surrounding magnetic field and electric field, that is to say, the current of the electric field may increase suddenly, or the pressure rises instantaneously, and the wire can not withstand this high voltage and high current, resulting in the leakage protector tripping to prevent the current from passing through the electrical appliances and burning the electrical appliances. Just wait for the thunderstorm to pass and turn it on. 3. If the protector trips frequently, it means that the power of the protector itself is relatively small, and the normal current or the protector with a slightly larger current cannot bear it, which is not conducive to the protection of electrical appliances.

The protector needs to be replaced according to the conditions of reasonable electricity consumption.

1. In the process of installing the leakage protector, the installation is not in place, so there will be poor contact, once this situation occurs, it is likely to cause the line to undervoltage, and it will also cause the protector to trip.

2. When buying a leakage protector, I didn't fancy the quality of the product, so once I bought the three-no product, then there was a certain problem with the product itself, and it was easy to trip if it was not a cavity.

3. The leakage protector and the load are not matched, if the current of the load has exceeded the rated current of the leakage protector itself, then the leakage protector will trip.

4. Once there is leakage or short circuit in the line, it is very easy to cause the leakage protector to trip.

5. The voltage of the power supply is too high when it enters the line, which is also very easy to cause the leakage protector to trip.

line, or a leakage of electricity from an electrical appliance. You can turn off all the electrical appliances and see if they still trip! If it doesn't trip, it means that the line is fine, and then connect each appliance in turn to try which one will trip, and the reason will be found.

If the power of the appliance is too high, the rated current of the leakage protector will also trip!

The reasons for the tripping of the leakage protector include poor installation, problems with the leakage protector itself, mismatch between the leakage protector and the load, excessive voltage of the power supply incoming line, leakage of the load or line, and short circuit.

1. Poor installation.

The cause of leakage tripping may be poor installation, such as each joint is not connected firmly, loose for a long time, etc. These will cause the binding post to heat up, oxidize, burn out the outer insulation of the wire, and emit sparks and scorching smell, resulting in undervoltage of the line and air switching operation. Therefore, timely inspection and reinstallation of the leakage protector is the key to ensure the normal operation of the leakage protector.

2. There is a problem with the leakage protector itself.

The leakage protector itself has a fierce problem, which is one of the reasons for the tripping of the leakage protector. Users should choose a reputable designated manufacturer or store when purchasing, and do not buy "three no" leakage protectors. Leakage from electrical appliances is the most common phenomenon, such as air conditioners, refrigerators, etc.

The judgment method is to unplug the electrical plug that is suspected of leakage, and then close it to see if it still trips. If it is determined that there is a problem with the leakage protector itself, you should contact the after-sales service for repair or replacement of the switch of the same specification.

3. The leakage protector does not match the load.

The mismatch between the leakage protector and the load is one of the causes of the leakage protector tripping. With the popularization of household electricity, the load current of many households has far exceeded the rated current of the leakage protector on the line, causing the leakage protector to trip. This situation usually occurs in the use of high-power home appliances, and the problem can be easily solved as long as a matching leakage protector is replaced.

4. The incoming voltage of the power supply is too high.

The high voltage of the power supply inlet line is one of the reasons for the tripping of the leakage protection switch. This situation mostly occurs in residential hugs with three-phase four-wire power supply, and may also be related to overvoltage trippers. Too high a voltage can trip the leakage protector, but you still need to check the wiring and appliances first.

If it is a trip caused by an overload of electrical appliances, it is necessary to disconnect the relevant electrical appliances before they can be restored. In residential buildings, high power incoming voltage is a common problem and safety should be taken into account.

5. Leakage and short circuit of load or line.

There are two main reasons for leakage tripping of load or line, and short circuit. If the leakage protector is tripped due to leakage or short circuit of the load of the household appliance, as long as the faulty household appliance plug is unplugged, the power can be re-transmitted; If the line is leaking or short-circuited, you can solve some simple faults first, so that some lines can temporarily resume power transmission.