Function Of A Roof Control Relay

Control and relay panel is most important equipment of the substation as it work as shield guard for all substation equipments and electrical network.

Function of a roof control relay.

Its basic function is to allow a low power control voltage operate a high power switch. The relay must come into action whenever there is a fault and must not operate if there is no fault. Some of them are primary relay meaning that they are the first line of defence. The switch may have any number of contacts in multiple contact forms such as make contacts break contacts or combinations thereof.

Relays are used to control high voltage circuits with the help of low voltage signals. Some relays are used for the protection of the power system. They are used to time the delay open and delay close of contacts. It consists of a set of input terminals for a single or multiple control signals and a set of operating contact terminals.

A relay is an electrically operated switch. Relays are used to provide time delay functions. Such relays sense the fault and send a signal to the proper circuit breaker to trip and clear the fault. Moreover these panels are useful to control the flow of electricity as per the voltage class and detect the faults in transmission lines.

In electromechanical relays the coil accomplishes this function. Similarly they are used to control high current circuits with the help of low current signals. You will also need to pull up on the emergency brake one click in order to activate the switch. Without this relay the ac compressor will not have power and the ac system will not function.

Relays are normally used in the control panels manufacturing and building automation to control the power along with switching the smaller current values in a control circuit. There is also a poor man s version of this feature override. The control circuit is the part of the relay that determines when the output component is energized or de energized. The control and the switch are electrically isolated from each other and they have their own voltage and current ratings requirements.

A relay is a electromagnetic switch. The ac compressor relay is responsible for supplying power to the ac compressor and clutch.