Answer Posted / vijaykumarht

The generated voltage in india is 11kv, so as to share the
load on each generator, as almost all generators were
running parallel.
The insulators anyhow designed for 11kv, but the series
insulators will not take 11kv each if connected in series,
hence as a standardization the voltage is transmitted in 11kv.
Anyhow the calcullation also becomes easier for the design
of insulators is may one of the reason.

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