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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.


Why Hitachi Energy?

  • More than 50 years of experience in manufacturing transformer components 
  • New generation of Buchholz relays with analog and digital output (eDevices)
  • Global after-sales and customer support network

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