Answer / suraj_ojha

Transformer specify according their application( step-up or
step-down,transmmision or distribution, power or
instrument ), Cooling system of transformer ( oil cooled,
air cooled, Forced air cooled),As per phase disign( single
phase or Three phase), according connection(delta/star or
delta/delta), According load in KVA

Answer / ibrahim shaikh

Transformers are Classified according to their
application,use and Rating. The rating Is generally in Kv
for distribution Transformers and in MVA and Kv class
rating for Power Transformers.
The Transformers are also Classifed as
Three Phase , Single Phase Transformers
The Classification of transformers is as follows.
Distribution Transformers (Dry Type or Oil Filled)
Power Transformers
Furnace Transformers
Rectfier Transformers
Reactors
Locomotic Transformer
Thers are also Cast Resin Type Transformers and Oil filled
Transformers
The highest Rating Transformer Manufactured in India is 765
Kv class Power Transformers
And the Only corporation to have a 765 KV grid line in
india is PGCIL.
Ibrahim Shaikh

Answer / ramanharikrishnan

Generally Transformers are specifing with KVA rating.

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