If the power supply of a computer or TV can burn out at high voltage, then both high and low voltage are dangerous for the electric unit of a refrigerator. You can save expensive equipment from the consequences of
such surges oman email list 2.7 million contact leads using a voltage control relay.
It provides protection for electrical appliances in the following cases:
power surge due to a break in an overhead power line;
increase in load when the neutral wire is broken;
voltage drop due to heavy load on the line;
phase overload.
Varieties Voltage control relay
Devices are classifi by connection type:
The plug-and-socket control relay is enclos in a compact case, with a plug on one side and a socket on the other. A group of consumers the decline of organic space on google requiring protection is connect to the relay socket. Such devices are equipp with a microcontroller that analyzes voltage readings and displays the current state on the screen. An electromagnetic relay is us for emergency load disconnection. Voltage limits are adjust and disconnect using buttons.
The relay in the form of an extension
Cord differs from the previous one in the size of the case, into which several sockets are insert, and the extension cord with a plug. This design fax list provides simultaneous protection of several connect devices.
A relay mount on a DIN rail in a distribution cabinet can protect all electricity consumers in an apartment. The devices are more powerful and have additional modes, functions and settings.
Depending on the type of load Voltage control relay
Single-phase and three-phase relays are distinguish. The latter are us to protect three-phase motors of household appliances:
air conditioners, compressors, refrigeration units.
Three-phase relays should be us only when the correct combination of phases (phasing) is important. In other cases, it is better to use several single-phase relays. This allows you to de-energize not the entire line,
but only the phases in which surges and imbalances have occurr.