Choose your region and language

Global
Argentina
Australia
Austria
Bahrain
Brazil
Bulgaria
Canada
Chile
China
Colombia
Czech Republik
Denmark
Egypt and North Africa
Finland
France
Germany
Greece
Hungary
India
Indonesia
Iraq
Ireland
Italy
Japan
Jordan
Kuwait
Malaysia
Mexico
New Zealand
Norway
Oman
Pakistan
Panama
Peru
Philippines
Poland
Portugal
Qatar
Saudi Arabia
Singapore
Slovakia
South Africa
South Korea
Spain
Sweden
Switzerland
Taiwan, China
Thailand
Türkiye
Ukraine
United Arab Emirates
United Kingdom
United States
Vietnam
English
Spanish
English
German
English
Portuguese
English
English
French
Spanish
Chinese
Spanish
English
English
English
English
French
German
English
English
English
English
English
English
Italian
Japanese
English
English
English
Spanish
English
English
English
English
Spanish
Spanish
English
Polish
English
English
English
English
English
English
English
Spanish
Swedish
German
French
Italian
English
English
English
English
English
English
English
English
Go

Menu

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 Energy?

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

Pressure relief device for power transformers' product scope:

  • Liquid-filled power transformers
  • For IEC and IEEE markets
Pressure relief devices
Pressure Relief Valves and Devices
Hitachi Energy's Pressure Relief Valves and Devices limit the tank's overpressure and reduce the risk of tank rupture and uncontrolled oil spills, which might also cause a fire. Learn more.
Measurement and Monitoring Devices
Hitachi Energy provides a comprehensive range of measurement and monitoring devices to secure your transformers' reliable and safe service conditions. Learn more.
Transformer Insulation and Components
The world's broadest and most reliable portfolio of transformers components and insulation
LYS186599_2
Transformers
Hitachi Energy offers distribution and power transformers, Dry-type and EconiQ™ Transformers as well as services, for industrial and commercial applications.