What is Indoor Switchgear ?

What is Indoor Switchgear ?

Indoor Switchgear Definition

Indoor switchgear is defined as a type of electrical switchgear enclosed in a grounded metal case, commonly used for medium voltages.

Indoor Switchgear Classification

• Metal-enclosed indoor switchgear.

• Metal-clad indoor switchgear

Gas-Insulated Systems

Indoor switchgear often uses GIS, insulated with SF6 gas, which has superior dielectric properties compared to air.

Metal-Clad Switchgear

This type of indoor switchgear is highly customizable and uses vacuum-type circuit breakers, offering isolated relaying and metering instruments.

Advantages of Indoor Substation

• More reliable and safer

• Takes lesser space than the outdoor system

• Easier maintenance and durability

• Lower operating costs

• Reduced risk of electrocuting due to grounded metal enclosures

• More security

• Lesser prone to environment conditions

Limitations of Indoor Switchgear

The main drawbacks are higher installation costs and less economic viability for high-voltage applications.