The Hitachi Energy BUL2 type of motor-drive mechanism is designed for the outdoor operation of our in-tank on-load tap-changers. The BUL2 contains all the necessary equipment for the operation of the tap-changer. A variety of equipment can be supplied to fulfill customer requests. Paralleling and voltage regulation systems can also be supplied to supplement the motor-drive mechanism and tap-changer.

• Modularized concept for easy order, shorter lead times and improved functionality
• Easier access for connection of incoming cables
• IP66 protection for higher reliability
• Improved UV protection in the window provides better long term visibility of position indicator
• Corrosion and water damage eliminated with removal of through-holes