Auto Transformer

Star Delta Transformers is a leading manufacturer of Auto transformers.
An auto transformer is used mainly for the adjustments of line voltages, to either change its value or to keep it constant.

An auto transformer’s efficiency is much higher compared to a primary & secondary wound transformer. Auto transformers efficiency can reach 99% under stable conditions.

Efficiency = (Pout / Pin) * 100
Pout= Vs * Is * Cos(Ø)
Power Factor= Cos(Ø)
Pin= Pout +Ploss