Over Current Relay Circuit Diagram

Take the subsystem block from commonly used blocks.

Over current relay circuit diagram.

In an over current relay there would be essentially a current coil when normal current flows through this coil the magnetic effect generated by the. In addition a thermal magnetic circuit breaker is used for both overcurrent and overload protection. At least one relay will operate for fault involving two phase. The overcurrent relay is defined as the relay which operates only when the value of the current is greater than the relay setting time.

Since the normally closed contact is empty the led is off when there is no. Double click the block. Overcurrent relay has the in matlab. A new window will open.

Over current relays are divided into two according to the structures. Draw the following circuit diagram in the newly opened window. It is not present in simulink library so follow the steps given below. In an over current relay or o c relay the actuating quantity is only current there is only one current operated element in the relay no voltage coil etc.

Circuit diagram of instantaneous overcurrent relay in simulink. It protects the equipment of the power system from the fault current. Working principle of over current relay. Fuses circuit breakers overcurrent relays current limiters temperature sensors and solid state power switches are used against overcurrent protection devices.

With the circuit shown in figure 1 7 led1 can be switched off by relay and button control. The two over current relays in r and b phases will respond to phase faults. 2 no o c relay 1 no e f relay for over current and earth fault protection. Are required to construct this protective relay.