Switchgear regulates, protects, and isolates power systems using metal enclosures housing various controls. There are three main types: high, low, and medium voltage switchgear. The automated protective switchgear uses circuit breakers and relays, with relays detecting faults and triggering circuit breakers to disconnect faulty lines, maintaining a normal supply without damage. Switchgear components include fuses, switches, relays, isolators, circuit breakers, transformers, indicators, and lightning arresters.

1. What is Switchgear?
Types of Switchgear
How it Works?
By Ghafoor Engineering

2.  Electrical switchgear regulates, protects, and
isolates a power system with a variety of
controls housed in a metal enclosure.

3.  High voltage switchgear
 Low voltage switchgear
 Medium voltage switchgear

4.  The automated protective switchgear
primarily includes the circuit breaker and
relay.
 The relay comes into action when a fault
occurs, and it usually closes the trip circuit
which automatically disconnects the faulty
line.
 After that, the operative and healthy section
runs the normal and required supply load.
And therefore, there’s no damage to
apparatus and no disruption of supply.

5.  While the occurrence of any fault or defect in
the power system, all electric apparatuses are
vulnerable to have a heavy current which
means the apparatus could get damaged and
the supply also gets disrupted.
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7.  Fuses,
 Switches
 Relays
 Isolator
 Circuit Breaker
 Potential and Current Transformer
 Indicating Device
 Lightning Arresters