Rating Auto Transformers up to 22 KV, 600 A.
Auto Transformers with ( Manual / Automatic ) tap – changing equipment.
Auto Transformers applications:-
Used as a safely starting machines such as induction motors and synchronous motors.
Boosters for compensating the voltage drop.
They can be used as variac.
Auto Transformers advantages:-
Increased KVA rating for a given size and mass.
Resistance and reactance are less compared to a two-winding transformer.
It is possible to get smooth and continuous variation of voltage.