What are the major equipment of a substation?

The switchyards, switches, circuit breakers, and transformers for the connection and disconnection of transformers and circuit breakers. These are also having lighting arrestors to protect the substation or power station from strokes of natural lighting.

What are the components of a high voltage substation?

High voltage substations are planned and constructed comprising high voltage switchgear, medium voltage switchgear, major components such as high voltage equipment and transformers, as well as all ancillary equipment such as auxiliaries, control systems, protective equipment and so on, on a turnkey basis or even as …

What are the main equipment of small substation?

The following equipment are installed in distribution substations: Distribution Transformer. Circuit breaker. Lightning Arrester.

How is the 11 kV substation connected to the transformer?

Fig (i) shows the layout of pole-mounted sub-station 2. Whereas Fig (ii) shows the schematic connections. The transformer and other equipment are mounted on H-type pole (or 4-pole structure). 3. The 11 kV line is connected to the transformer (11kV / 400 V) through gang isolator and fuses. 4.

How much power do you need for a substation?

Consider that you would like to choose a transformer to supply power to a factory which requires maximum of 270 kVA of power at 400 V on the LV side and no expension is considered for near future. The power will be provided by connecting the factory to 33 kV MV voltage level.

How many kVA can a pole mounted substation handle?

The oil circuit breaker (O.C.B.) installed on the L.T. side automatically isolates the transformer from the consumers in the event of any fault. 7. The pole-mounted sub-stations are generally used for transformer capacity up to *200 kVA.

What should be considered when designing a substation?

Substation Design Consider that you would like to choose a transformer to supply power to a factory which requires maximum of 270 kVA of power at 400 V on the LV side and no expension is considered for near future. The power will be provided by connecting the factory to 33 kV MV voltage level.