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Comem eBR

Leakage current, arcing, flashovers, loss of insulating liquid or excessively high flow rates can generate gas and affect transformer performance.

Comem eBR Buchholz relay is an innovative evolution of our standard device. Thanks to its digital interface, Comem eBR continuously monitors two crucial parameters to ensure correct transformer performance: gas accumulation and insulating fluid flow to the conservator.

An electro-pneumatic valve is automatically operated by Comem eBR to discharge the gas and avoid transformer shutdown.

Why Hitachi ABB Power Grids?

Product scope:

  • 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

Product scope:

  • Liquid-filled power transformers
  • Smart grid applications
  • For IEC and IEEE markets

Related offering

Comem eBR