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Comem ePRD

In case of a sudden and uncontrolled increase in pressure inside the transformer, the pressure relief device allows the insulating fluid to be discharged in milliseconds. 

Comem ePRD, with digital and analog output, provides continuous control and monitoring of the pressure inside the transformer tank. It significantly improves transformer reliability and safety. The device is equipped with a digital interface for easy connection to smart grid applications and can be integrated into a system through a central control unit. 

Why Hitachi ABB Power Grids?

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

Product scope:

  • Liquid-filled power transformers
  • Smart grid applications
  • Smaller types available for liquid-filled distribution transformers
  • Compatible with the most common international communication protocol standards 
  • Can work in standalone mode or be integrated into a system 
  • Data monitoring available through Modbus and 4-20 mA
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