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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.

Why Hitachi Energy?

  • 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

Our offering

In-tank resistance type

On-tank reactance type

Contact us

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