How many types of switch gear?
There are several different types of switchgear power systems
and each have their own unique characteristics to meet the specific
needs of the system and its location.
A very effective form of switchgear power systems is a gas
insulated switchgear (GIS) system. In this type of system,
conductors and contacts are insulated by pressurized sulfur
hexafluoride gas. While effective, it is very expensive, however.
Other common switchgear power systems include oil insulated and
vacuum switchgear.
A circuit breaker is also an important part of switchgear power
systems and their safety and function. A circuit breaker that is
housed within switchgear power systems enclosures is a primary
component that can interrupt fault currents. A circuit's arc is
quelled when the circuit breaker pulls apart the contacts and
disconnects the circuit. The design of this system requires careful
consideration regarding how and where it will be utilized.
Generally speaking, circuit breakers fall into four major
categories; oil, gas, vacuum and air.