Vacuum on-load tap-changers

Our new generation of tap-changers uses the latest vacuum interrupter technology. This design philosophy allows the arcs during load commutations to occur in vacuum interrupters and not in the tap-changer oil. This greatly reduces the need for maintenance and creates the potential for using environmentally friendly insulating fluids.

Hitachi Energy offers a full range of products for both high-voltage and low-voltage regulation. Our tap-changers are paired with robust, dependable motor drives that are configurable to meet a wide range of environmental conditions and customer specifications.

• More than 100 years of tap-changer manufacturing experience in tap-changers
• High-quality materials ensure the longest lifetime
• Type-tested beyond international standards
• High reliability thanks to few parts and low complexity in design
• Easy maintenance
• Easy to upgrade from conventional to vacuum technology in existing installations