Substation in Building











The minimum area required for substation and transformer room for different capacity are given in Table-1.

Table-1 : Area Required for Transformer Room and Substation for Different Capacities

Capacity of
Transformer
(Kva)
Transformer Room Area( m2)
Total  Substation Area (with HT, LT Panels &;Transformer Room but without Generators) (m2)
1 x 150
12
42
1 x 250
13
45
2 x 250
26
90
1 x 400
13
45
2 x 400
26
90
3 X 400
39
135
2 X 630
26
90
3 X 630
39
135
2 x 1000
26
90
3 X 1000
39
135

The minimum height of the substation room shall be 3.6 m.

Power Lines & Substations
State

Substations

A substation is a high-voltage electric system facility. It is used to switch generators, equipment, and circuits or lines in and out of a system. It also is used to change AC voltages from one level to another, and/or change alternating current to direct current or direct current to alternating current. Some substations are small with little more than a transformer and associated switches. Others are very large with several transformers and dozens of switches and other equipment. There are three aspects to substations:
Here are further guidelines.