Auto Transformers

Efficient Voltage Regulation & Control

An auto transformer is a versatile voltage regulator designed to efficiently step up or step down voltage in electrical systems. Unlike traditional transformers, an auto transformer shares a common winding between the primary and secondary sides, ensuring higher efficiency and reduced losses. In load conditions, a part of the load current is drawn directly from the power supply, while the remaining is supplied via transformer action. These transformers provide stable voltage control, making them essential for industrial machinery, heavy engineering, and power conditioning applications.

Manufactured as per IEC 60076 and IS 2026 standards, auto transformers come with single or three-phase configurations, offering customized capacity and voltage levels. Equipped with ONAN, ONAF, and AN cooling options, they ensure long-term durability and consistent performance. Their compact design, lightweight structure, and enhanced efficiency make them suitable for applications requiring stable voltage supply with minimal energy loss. Auto transformers are widely used in power distribution networks, industrial automation, and electronic testing systems to ensure precise and reliable voltage regulation.