Pressure and flow devices

Pressure in oil-filled transformers is a very important parameter to determine signs of decreased performance or upcoming failure. Moreover, in a high-pressure situation, it is essential to limit and contain the effects of hot oil evacuation in the surrounding environment.

Hitachi Energy offers a variety of pressure relief devices for all applications. Our portfolio includes a new generation of pressure relief devices with digital and analog output, enabling continuous online monitoring and cross-checking of transient pressure phenomena.

Why Hitachi Energy?

• More than 50 years of experience in manufacturing transformer components    
• Comprehensive product portfolio for distribution and power transformers
• A new generation of pressure relief devices with digital and analog output (eDevices)
• Global after-sales and customer support network