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Conventional buchholz relays

Transformer outages have a considerable economic impact on the operation of a power supply network. Internal gas accumulation and oil flow are monitored and kept under control by the Buchholz relay.  

Our Buchholz relays are designed to promptly provide information about internal malfunctioning, giving the possibility to shut down the transformer and prevent its possible destruction. The relays are designed to detect faults and prevent damage to the oil circuit, induction coils and other components in oil-filled transformers.

Why Hitachi ABB Power Grids?

  • More than 50 years of experience in manufacturing transformer components
  • Global after-sales and customer support network

Product scope:

  • Liquid-filled distribution and power transformers
  • On-load tap-changers
  • Traction applications

Related offering

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