Complete Guide to The Working of Circuit Switch

In our previous blogs, we have been discussing how a circuit switch is able to protect the circuit and devices from the consequences of overload, overcurrent and other unexpected incidences on the circuit. Let us take a look into the working of the circuit switch, so as to get a better understanding of how a circuit switch is able to perform these protective measures.

The process begins with the installation of a circuit switcher at the centre of the power distribution system, which is then connected to the load that requires protection. The load refers to the devices or appliances, and the point of installation may vary, ranging from a substation to a transformer.

During normal operation, when the circuit is functioning correctly, the circuit switcher will stay in the closed position, enabling the electric current to flow smoothly through the circuit from the source to the load.

If there is a fault in the circuit, such as overcurrent, over-voltage, ground fault, or short circuit, the circuit switcher can identify these abnormalities through the sensors and other components discussed earlier.

The control component of the circuit switcher sends signals to the mechanical and electric components of the switcher, causing the contacts to open. When the circuit switcher is open, it means that the circuit is disrupted, and there is no transmission of electric current to the device.

Any load connected to the circuit will be separated from the rest, so the fault will not affect it. This isolation also minimizes the potential for further damage to occur on the remainder of the circuit.

The subsequent stage involves eliminating the fault to restore normalcy to the circuit. Typically, a technician is called upon to examine the origin and possible cause of the fault. Fault identification is often achieved through the use of sensors and other electric metering equipment.

Once the fault has been identified, measures are taken to isolate and rectify it. Some of the corrective actions include repairing wiring connections, replacing electrical components, and making other necessary changes to the circuit as a whole.

Once the fault has been fixed, the control component of the circuit switcher will send signals to close the contacts. This typically occurs very quickly to prevent any downtime in the electric system.

After that, the circuit switcher will resume its role of monitoring, controlling, and protecting the circuit.