Is the break of "zero" and power surges a common problem? Second, of course, our power grids are not perfect. The first - it happens, not often, but precautions must be taken. And the modern electrical market is quite capable of providing a sufficiently reliable device for solving these problems. Let's consider it in more detail.
Relay voltage: what is it, what are the advantages, how to install?
A voltage relay is a small device (the same size as a circuit breaker) that can be set to a specific voltage limit. For example, not less than 210, but not more than 240 V. If the potential difference in the network goes beyond the set parameters, the relay will simply cut off the power supply to the consumer. Better this way than then take the burnt out equipment to a service center.
Another useful property of a voltage relay is the protection of the network from the consequences of a burnt-out neutral conductor, in which the voltage on each "phase" changes. If the "zero" is damaged or burned out, the time relay will not only protect household electrical appliances, but also perform the function of a kind of signaling device that a malfunction has occurred in the network.
Pros:
- Protection of equipment from power surges.
- Easy to install - no more difficult than plugging in an outlet.
- Affordable cost. But it is better to buy the device only from trusted sellers.
- The relay works automatically and after disconnection, after a set time, re-energizes the apartment.
The connection algorithm is quite simple: connect the neutral conductor, the incoming "phase", and the outgoing wire to the three sockets marked by the consumer, which will power the consumer directly.
How a voltage relay will save the network in the event of a "zero" break
If the neutral conductor is broken, the devices will continue to function properly only in the only possible case - if the load on all phases is the same. But this cannot be a priori, the most insignificant consumer, but it will work! And then the voltage relay reads the potential difference data, "sees" a significant difference and then turns off the network.
If the load is the same, then the relay will not work, but this option, as mentioned above, is, in principle, impossible.
Do I have to install a relay at home?
It is possible not to install, this is the choice of everyone personally, but the fact that the voltage relay is a really useful device is indisputable. In addition to all its advantages, each such device is equipped with a small convenient screen that shows the current voltage in the network. You can check it just by going to the switchboard.
How to quickly set up a voltage relay
There are usually 3 buttons on the device body. It is necessary to clamp the one on which the arrows are not indicated. This is a setting. After the relay enters the operating parameters indication mode (the corresponding icon will appear on the screen), use the arrows to set the lower and upper shutdown limits.
The functionality of this device is simplified as much as possible and setting up a relay rarely takes more than a few minutes.