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The Sudden Pressure Relay, or SPR™, of Hitachi Energy detects a sudden rise in gas pressure within a power transformer and provides an alarm output. The SPR™ is mounted to the transformer tank and connected to the transformer's gas space.


Key Features

  • Robust and proven product
  • Technical and commercial assistance 24/7
Sudden Pressure Relay (SPR™)

Sudden Pressure Relay (SPR™)

Precision and Quality

Quality is a priority for Hitachi Energy. Hitachi Energy offers technology leadership backed by a proven record of addressing diverse challenges and improving standards. Our product portfolio is the result of research, manufacturing, and servicing transformers, making us unique in the industry. Hitachi Energy's pressure relief devices and valves are fully tested for precision and operations before dispatch.  

Quick Quotes and Deliveries

We offer standard prices and quick delivery times for the products listed in Our Offerings. Our engineers can also provide customized solutions for your application if necessary.

Hitachi Energy offers a comprehensive portfolio of transformer accessories and services to meet our customers' evolving needs. We can bundle multiple accessories together so that transformer manufacturers can focus on delivering to their customers on time and without hassle.

Sudden Pressure Relays (SPR)
Sudden Pressure Relays (SPR)

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Measurement and Monitoring Devices

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Support team

Our team is available 24/7.