The service life of various household appliances depends not so much on the brand of the purchased product, but on the quality of the electricity supply to the network. After all, any shutdowns or surges in voltage can cause damage to devices. Therefore, it is very important to know how you can protect them from voltage surges.
Instructions
Step 1
Class B voltage limiters. Very often they are installed in private houses. These arresters provide protection against lightning and various overvoltages, including atmospheric ones. The limiters are installed at the entrance to the building, that is, in the main switchboard. A class B limiter is able to protect an object from a discharge current up to 70 kA. The work of the limiter is based on the use of varistors. Since varistors have increased nonlinearity, the main current passes through the arrester, thereby reducing the overvoltage level.
Step 2
Voltage limiters of class C. They protect devices from overvoltage residues that have passed through class B limiters, or they are the first protection in those buildings where class B limiters are not installed. It protects internal wiring, outlets, switches, etc. It is very important to install the voltage limiters at a distance of at least 7 meters from each other, as this will ensure their alternating actuation.
Step 3
Class B + C voltage limiters. This type of combined limiters allows you to save space in the shields, since the entire device is made in a common box, and the size can be different depending on how much you need to protect the conductors.
Step 4
Class D voltage limiters. This type of limiter is used to protect the most expensive devices, so it is installed directly next to them and only protects them. This arrester can only be used with other degrees of protection, otherwise any overvoltage will damage it.
Step 5
Voltage relay. When the voltage in the network fluctuates, the relay turns off all devices, and when the voltage stabilizes, it connects them automatically. Relays are used to protect televisions, refrigerators, washing machines, and so on.
Step 6
Surge Protectors. Stabilizers control voltage drops. If the voltage goes beyond the available limits, then the consumer is disconnected from the network. After the voltage becomes normal, the stabilizer turns on.
Step 7
Uninterruptible power supplies. Power outages are generally very dangerous for computers. If there is a constant blinking of electricity, then the equipment may completely burn out. To avoid this, it is better to install an uninterruptible power supply, which will allow, in the event of a sudden power outage, to correctly shut down the computer and save all information.
