Industrial Grade Auto Transformers are built with the equivalent of only one winding. The Transformers has as a limit that it is most efficient when the difference between the input and output voltages are closest. The Transformers are used in static balancers, boosters and motor starters. The Industrial Grade Auto Transformers are used in adjusting single and three-phase line voltages to meet specified needs, and are particularly useful in matching line voltage to a protected equipment application.
