Why RCD works and what to do in this case?

How does the device?

So first let's deal with the principle of protecting the work of automation that you understand, which is why there is an operation.

internal mechanism has the following principle: connect to the terminals phase and neutral conductor, which are compared with each other on the current.Ideally, the phase difference between the current and the neutral conductor should not be.If there is a difference and it is above the set point, it is a signal that there is leakage current.Based on the analysis of the unit on and off and then immediately have to look for the cause for which the RCD triggers - find leakage current.

recommend reviewing the video, in which all is explained in detail:

main reasons for disconnection

Actually perpetrators trip very much and they canhave the most diverse in nature, and thus the method of repair.First, consider why the RCD is triggered, and then give your attention to the instructions for self-repair of faults.

To date, the following are known causes of why the product knocks:

1. The network actually occurred current leakage.This may be due to the fact that the wiring is old, becauseinsulation in any case already rassohlas over time and in some areas is exposed wire.If you have recently carried out the replacement of wiring in an apartment, it can be done in certain places bad connection wires or you accidentally when hammered a nail into the wall, insulation breakdown flush.
2. culprit may be electrical appliances, which are protected by the unit.Then a cord that connects to the network is out of order or internal parts "pierced" (eg, motor windings).
3. Improper installation of protective automation, resulting in the RCD is working properly and works intermittently.Instructions on proper RCD connection with his own hands, we have already provided, so please read it.
4. Perhaps when buying protective automation you have chosen the wrong characteristics, and there is a false positive.About how to choose the RCD, we were told in detail in the relevant article.
5. residual current circuit breaker (DVT, so it is also called) can knock due to human touch bare current-carrying conductor.Do not forget, that's the main purpose of his lies.
6. Fault mechanism itself can be one of the reasons.For example, zalipla button "Test" or damaged trigger that will be triggered at the slightest vibration.
7. often tripping occurs due to improper placement of DVT in the line of wiring.Look at one example: wiring diagram RCD-phase network to know where to begin to carry out the installation.
8. closure of land and zero for electrical work may result in a shutdown.Although the SAE rules is strictly prohibited to connect ground zero conductor, some electricians ignore prohibitions and do everything in their own way, citing the fact that this way will help protect people from electric shock (although in fact it only increases the danger).
9. Weather conditions directly affect the operation of the device.For example, in wet weather, if a junction box mounted on the outside, it can be triggered by the appearance of dampness in the inner mechanism.In turn, accumulation of moisture inside the product can cause a leakage current, whereby the mechanism and react.Here it should be noted that the RCD frost may sometimes be omitted in a dangerous situation.This is due to the fact that the temperature below zero negative impact on the chips, which are out of order.By the way, during a thunderstorm, there are times when the defense cut down, that is caused by the influence of lightning that enhances minor leakage current present in the house (or apartment)
10. And the last nuance, which is closely related to the previous - humidity.If you have carried out the installation of hidden wiring, and then slipped the track sealer and decided to immediately check the quality of the work, may be switched off.This is due to the fact that wet solution is a good conductor, which can cause leakage through minute cracks in the wiring.Wait until the solution is fully seized, and then check again, the RCD is triggered or not, becauseIt may have cut down lever.

sure to check out the video lesson, which clearly shows the erroneous connection :

In what may be triggering circuit breakers reason, we have considered.Now, of course, you need to provide to you the instructions to solve the problem with their own hands.

How to find the problem area?

To find the reason for the RCD is triggered, you must perform the following set of measures:

1. Check the wiring and I / O correctly lived, becausethe main reason for failure is precisely the wrong wiring.
2. off automatically switches the differential current protection on each group of circuits: lighting, sockets, powerful home appliances, such as a bathroom.
3. when you turn off AB try to include protection against leaks, if the lever knocks, there is a problem in the product itself - violated the trigger, becausewhen power is turned off no leakage currents.If the lever does not work, move on.
4. Disconnect all electrical outlets, and turn on the power to the board.Lever not sat - a problem in the electrical system, asno load it works, RCD works - wiring fault.

What should I do to troubleshoot?

So, to find the faulty appliances, you must first turn off all devices, and then alternately connect each.So you will find exactly the unit is broken, because it is going to happen when connecting alarm.Instructions for repair and maintenance of equipment, we are considering in a separate category, in it you can learn how to repair a malfunction of the dishwasher, and other devices.Most often, the RCD knocks when connecting the washing machine, oven and water heater (boiler).Would you like to search for breakage, better call a service technician.

In the event that the cause of tripping RCDs is electricity, the situation is more complicated.If the old line, better replace the wiring in the house to a new, more reliable.

As we have said, even from new wiring leakage can occur as a result of which the RCD triggers.In this case, do a thorough audit of outlets, switches and junction boxes, asIt can be simply dropped into the neutral conductor connection, or anywhere moisture gets on the stripped conductor.Pay attention to whether the product is turned on when the light is turned off, aslamps also are often the cause.After checking all the electrical outlets in an apartment, check the cabling and the very track.Good open if wiring (for example, in a wooden house or garage) asaccess is opened over the entire area of ​​rooms.If the cable is hidden in the wall, find the break can only be a special device to search for the wiring.When using it, you can definitely find a place breakage.

draw your attention to the fact that the search for the reasons due to which the RCD triggers is not an easy occupation.To do this you have to spend a lot of time and nerves, spending long visual studies.We wish you not to deal with this problem, and if it will affect you - only for the simple reason!

Also read:

• How to make ground in a private home Installing
• breaker do I choose Emergency circuit breakers or RCD
• How to find a short circuit in the wiring