Over Current Relay Circuit Diagram
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Take the subsystem block from commonly used blocks.
Over current relay circuit diagram. Overcurrent relay has the in matlab. A new window will open. Depending on the time of operation the overcurrent relay is categorized into following types. At least one relay will operate for fault involving two phase.
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. It protects the equipment of the power system from the fault current. With the circuit shown in figure 1 7 led1 can be switched off by relay and button control. Over current relays are divided into two according to the structures.
Fuses circuit breakers overcurrent relays current limiters temperature sensors and solid state power switches are used against overcurrent protection devices. Working principle of over current relay. Draw the following circuit diagram in the newly opened window. Since the normally closed contact is empty the led is off when there is no.
Earthing of both will short circuit the e l relay and make it inoperative for faults. Double click the block. The overcurrent relay is defined as the relay which operates only when the value of the current is greater than the relay setting time. Are required to construct this protective relay.
Circuit diagram of instantaneous overcurrent relay in simulink. 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. 2 no o c relay 1 no e f relay for over current and earth fault protection.
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