Relay Circuit Diagram And Working

Relays are switches that open and close circuits electromechanically or electronically.

Relay circuit diagram and working. A relay is an electromagnetic switch that is used to turn on and turn off a circuit by a low power signal or where several circuits must be controlled by one signal. The relay is an electromechanical switch used as a protecting device and also as a controlling device for various circuits equipments and electrical networks in a power system. Above is the wiring diagram of tcs relay wired to trip circuit of the breaker. Relays control one electrical circuit by opening and closing contacts in another circuit.

You see one block made by dotted lines in the above pic one block is the the breaker shown 52 a and 52 b breaker. Relays are not only used in the large electrical circuits but also used in the computer circuits in order to perform the arithmetic and mathematical operations in it. Wiring diagram working of tcs relay. In this arduino relay control circuit we have used arduino to control the relay via a bc547 transistor.

Before we understand how tcs relay works we first have to understand the trip circuit of circuit breaker. A wiring diagram is a simplified traditional pictorial depiction of an electrical circuit. Buchholz relay diagram working principle. The applications of the relay are limitless its main function is to control the high voltage circuit 230v circuit ac with the low voltage power supply a dc voltage.

As relay diagrams show when a relay contact is normally open no there is an open contact when the relay is not energized. Solid state relay can be defined as relay which utilizes the solid state semiconductor devices for performing switching operation. When the circuit of the relay senses the fault current it energises the electromagnetic field which produces the temporary magnetic field. We have connected transistor base to arduino pin a0 through a 1k resistor.

Check the following buchholz relay diagram to understand the working principle and construction. It works on the principle of an electromagnetic attraction. This magnetic field moves the relay armature for opening or closing the connections. Assortment of 12 volt relay wiring diagram.

We know that most of the high end industrial application devices have relays for their effective working. To discuss about working of relay we must consider any one type of relay and here in this article consider solid state relay to easily understand about relay working. An ac bulb is used for demonstration. The electromechanical relay can be defined as an electrically operated switch that completes or interrupts a circuit by physical movement of electrical contacts into contact with each other.

Buchholz relay construction buchholz relay diagram. Working principle of relay. It is a mechanical device that accompanies two numbers of mercury electric switches for sending the electrical command to the relays.