Split core current sensor relays can help monitor the current of circuits to help in detecting locked rotors current loss open heaters or lamp loads.
Current relay circuit.
They activate at a fixed or adjustable current setting point.
Internal core current sensor relays internal core current sensor relays are designed to help monitor the current flow in a conductor.
When a pump is operated with a flooded suction and liquid completely covers its inlet the pump s motor will draw normal operating current.
The current sensing relay in this water pump electrical circuit prevents the pump from running when the water level is too low.
Medium current relays these relays are rated for motors with 1 3 horsepower or 15 90 amps use them with industrial automation systems security and emergency lighting and small motors.
Working of the electromagnetic relay.
Also known as power relays.
In the overcurrent relays the current is set by the adjusting screw on the relay.
The current is set within certain limits according to rated currents of the motors.
The overcurrent relays are connected in series to the load circuit and the load current is passed through.
Notice here that breaker tripping coil is solely responsible for the tripping of circuit breaker.
The operating circuit circuit 1 see the figure 1 is connected to a solenoid coil wound round iron core.
A relay is a device by which electric current flowing in one circuit can open or close a second circuit i e.
Switch the current on or off in the second circuit.