What happens when the leakage protector trips, and what happens when the leakage protector trips?

Leakage protector.

Abbreviated as leakage switch.

Also known as leakage circuit breaker, it is mainly used to protect the equipment from electric shock when leakage fault occurs and to protect people with fatal danger, with overload and short-circuit protection functions, which can be used to protect the overload and short circuit of the line or motor, and can also be used as an infrequent conversion and start of the line under normal circumstances.

Generally, the leakage protection switch and the air switch are installed together, so that the line has the functions of overload, short circuit and leakage protection at the same time.

Leakage protectors generally trip for the following reasons:

One: Poor installation. The lead wires of each pile head are not firmly connected and loose for a long time, which will cause heat in the pile hair.

Oxidation, burning out the outer insulation of the wire, and emitting sparks and burnt smell? , causing the line to under-voltage, the air switch action.

Two: with loads.

Mismatch. The actual electrical load of the household is greater than the rated current of the leakage protection switch.

It generally occurs after the installation or addition of high-power household appliances such as air conditioners and electric water heaters. The matching leakage protection switch must be replaced.

Three: electrical appliances or lines leakage, short circuit. When an electrical appliance is found to be leaking, as long as you unplug the electrical appliance with leakage fault, and then close the leakage protection switch again, you can send power.

If a leakage or short circuit is found in the line, an electrician must be called in to deal with it. After the leakage protection switch trips, first disconnect the air switches behind the leakage protection switch one by one, and then close the power transmission one by one. When a branch is closed, the leakage protection switch cannot be powered, that is, the branch is faulty, and this way should be disconnected and other branches should be closed.

After the problem of faulty shunting is detected, the power is sent after repair.

Four: power supply inlet line voltage.

High. It is very dangerous and generally occurs in'Three-phase four-wire.

system of electricity supply for residential buildings.

1: See if both lines are electrified;

2: See if the neighbors also trip;

3: Use a multimeter.

Measure the incoming line voltage. Do not force the air switch to close, otherwise it will burn the electrical appliances at least and cause a fire at worst.

Five: after the above reasons are found and eliminated, if the household leakage protection switch still can not close the power transmission, please check the leakage protection switch inlet and outlet pile head and inlet line voltage, if there is no problem, and then disconnect each group of outlets, check whether there is an internal line fault, if each group of outlets is no problem, or still can not be powered, may leakage protection switch damage or unqualified. You can replace it with a new leakage protection switch.

Leakage, the button under the protector pops up, and if it doesn't pop up, it is overcurrent protection.

1.Leakage, 2Overcurrent. 3.Short circuit. 4.Fault.

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

Normal tripping indicates that if the leakage switch with a rated leakage action current of 30mA has more than 25mA leakage current in its 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.

Abnormal tripping is caused by the unqualified quality of the leakage switch itself, which is divided into two categories: unfit and sometimes unexplained tripping. 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.

If the leakage current of normal tripping fluctuates up and down at 25mA, the phenomenon is similar to occasional tripping, and the cause is often caused by the aging of the insulation of the wire, that is, tripping when the environment is wet, and not tripping 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.

If there is a problem with the leakage protector itself, and it always trips, it needs to be replaced with a new leakage protector. If it is caused by loose connection points or poor contact, it is necessary to reinstall the connection. If it is caused by leakage of electrical equipment, it is necessary to unplug the socket and repair the electrical equipment.

The reasons for this situation: 1. It is possible that the connection point of the leakage protector is loose or the contact is poor, resulting in the leakage protector always tripping. 2. There is a leakage phenomenon of a certain electrical equipment at home, and the current will flow to the ground through the ground wire, at this time, the leakage protector will detect the abnormal current, and it will also be disconnected, and the phenomenon of tripping will occur.

3. There may be a short circuit in a certain line, or a poor connection. 4. In addition, the leakage protector itself is aging or malfunctioning, which will also lead to this problem. 5. The power of the electrical appliances used at home is too large and used at the same time, which leads to the overload of the leakage protector or the failure of the leakage protector, which will also lead to the problem that the leakage protector always trips.

There will be no safety hazard, that is, the large current generated at the moment when the bulb filament burns out causes the protection switch to be adjusted.

There are several reasons for power outages:

1) The load is too large and the air switch trips. If the power supply is restored after closing, and the power is tripped after a few minutes, and the high-power electrical appliances are turned off and returned to normal, this situation is mostly caused by the load exceeding the empty opening threshold. If the wire diameter can meet the load, the large current can be replaced.

2) The zero line row burns out. If the lighting at home has electricity, the leakage protector does not trip, but the sockets at home do not work, or the mobile phone charger responds when plugged into the mobile phone but cannot be charged normally, this situation may be that the neutral line is broken.

Most of the circuit problems that occur after living in the house for a few years are caused by the discharge problem of the neutral line. In this case, if you don't know much about electricity, it's best to ask a professional electrician to replace the neutral wire row. If you need it urgently, you can arrange all the lines on the neutral line and connect them together for temporary use.

3) Circuit problems. If the switch cannot be closed after tripping, first unplug all the electrical appliances on the socket to eliminate the tripping caused by the short circuit of the electrical appliances. Pull down all the empty opens, starting from the main switch, push them up one by one, if you push a certain empty trip, the others do not trip, then there is a problem with the electricity that trips and opens empty.

After confirmation, find a professional electrician for repairs. When checking the circuit, it is necessary to work live, and non-professional electricians should not take risks.

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.

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.

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!