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Pressure relief device for power transformers

Sudden and violent short circuits inside the oil-cooled transformer’s metal tanks instantly generate an enormous amount of gas, which causes a substantial increase in internal pressure. If the pressure cannot be externally discharged, there is a danger that the transformer could explode and potentially cause harm and damage.

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. Our pressure relief devices significantly improve transformer reliability and safety.

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 power transformers
  • For IEC and IEEE markets
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