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Motor-drive mechanisms

The main objective of an electric motor drive unit is to drive the connected on-load tap-changer or large de-energized tap-changers to a higher or lower tap of a transformer.

Hitachi ABB Power Grids tap-changers are paired with robust, dependable motor drives that are configurable to meet a wide range of customer specifications. From modular BUL and versatile BUE for in-tank on-load tap-changers to the digitally controlled SMD with integrated Tap Logic Monitoring System (TLMS) for the type VRLTC tap changer.

Why Hitachi ABB Power Grids?

  • More than 100 years of manufacturing experience in tap-changers
  • High-quality materials ensure the longest lifetime
  • Proven solutions with decades of successful field operation
  • Type-tested beyond international standards
  • High reliability thanks to few parts and low complexity in design
  • Little to no maintenance
  • Compact design

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