To avoid the growing of plants and for insulation

To support the poles

To support the transformers

To avoid slippery

One

Two

Three

Four

Change AC supply into DC supply

Change DC supply into AC supply

High voltage supply step down into low voltage supply

Low voltage is stepped up into high voltage

Air blast circuit breaker

SF6 circuit breaker

Minimum oil circuit breaker

Bulk oil circuit breaker

Three

Six

Two

Eight