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De-energized tap-changers and switches

Our de-energized tap-changers are the preferred solution of transformer manufacturers worldwide thanks to their simplicity and ease of installation. Multiple deck arrangements make our designs the most compact de-energized tap changers on the market. With little or no required maintenance, our de-energized tap-changers are the ideal solution for both utility and industrial customers. 

ABB's portfolio includes bridging, linear and rotary options, with ratings up to 4,000 A and 1,050 kV BIL. We also offer solutions for pad-mounted and submersible distribution transformers and self-contained manually operated switchgear.

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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Our offering

IEC

IEEE

  • De-energized tap-changers type COT
  • De-energized tap-changer type KD
  • AT (Um ≤ 300 kV, Ir ≤ 650 A) IEC
  • DTU de-energized tap changer
  • DTL de-energized tap changer

IEC

IEEE

  • De-energized tap-changer type KDV
  • DPC de-energized tap-changer
  • DT-DV de-energized tap changer
  • DTW de-energized tap changer