Switchgear

Definition

Switchgear is a freestanding assembly including primary (disconnect) switches, secondary (feeder) switches, and overcurrent protection devices such as fuses and circuit breakers.

Purpose

The purpose of switchgear is to control, protect, and isolate electrical equipment, ensuring the safe and reliable operation of the electrical power system by managing the flow of electricity and protecting against overloads and faults.

Examples of Use

• Power plants use switchgear to manage the distribution of generated electricity to the grid.
• Substations employ switchgear to control and protect transformers and distribution lines.
• Industrial facilities install switchgear to handle high voltage equipment and protect machinery from electrical faults.

Related Terms

• Circuit Breaker: A device that interrupts the flow of electricity in a circuit when a fault is detected.
• Transformer: An electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Feeder: A conductor or group of conductors that supply power to a specific area or equipment.

Notes

Switchgear is critical for maintaining the reliability and safety of electrical systems, allowing for controlled distribution and protection against electrical hazards.