Switchgear equipment include:
- Switches
- Fuses
- Relays and CB
- All of these
Correct answer: 4. All of these
Explanation:
- Switches: Switchgear equipment includes switches, which are devices used to open or close electrical circuits. They play a crucial role in controlling the flow of electrical power within a system. Switches can be manual or automatic and are essential components in electrical distribution systems.
- Fuses: Fuses are protective devices in switchgear that are designed to interrupt the electrical circuit when a fault occurs. They provide overcurrent protection by melting and breaking the circuit in the event of excessive current flow. Fuses help prevent damage to equipment and ensure the safety of the electrical system.
- Relays and CB (Circuit Breakers): Relays and circuit breakers are also integral parts of switchgear. Relays are devices that sense abnormal conditions in the electrical system and initiate the opening or closing of contacts to control the circuit. Circuit breakers, on the other hand, are automatic switches designed to protect the electrical system from overcurrents and short circuits by quickly interrupting the flow of electricity.
In summary, switchgear equipment encompasses switches for control, fuses for protection against overcurrents, and relays and circuit breakers for automated control and additional protective measures. Therefore, the statement “All of these” is correct as it includes all the mentioned components.