Pressure relief devices

Pressure relief devices in various sizes (1″–6″)

Short circuits are a frequent reason for failures and problems in transformers. They can cause massive overpressure development in the tank and in the tap changer of the transformer. Pressure relief devices protect medium and large distribution transformers, electric coils, power transformers and tap changers in case of sudden pressure increases in the oil system – reliably and safely.

MESSKO® MPREC®

The MESSKO® MPREC® pressure relief device protects distribution and power transformers, electric coils and tap changers reliably and safely in the…
+ Hood with interior micro-switches
+ Opens within 2 ms; closes within 70 ms
+ Suitable for wind turbines

CEDASPE® VP (former ETI VS)

The Pressure relief valve is designed to limit the pressure rise inside a tank, in order to prevent an excessive mechanical stress of the walls. It…
+ It works automatically based on valve setting
+ Electrical switches: from 1 up to 3 (2 contacts each)
+ It features compression spring(s) outside

CEDASPE® VP150-QT/VP150-ST (former ETI VQT/VST)

CEDASPE® VP-150 QT have been specially designed for use on transformers where no external pollution is admitted. It opens when the pressure inside…
+ It works automatically based on valve setting
+ Electrical switches: from 1 up to 2 (2 contacts each)
+ It features compression spring(s) outside

CEDASPE® R1/R2

CEDASPE® R series is spring-inside-the-tank pressure relief valve without contacts, for distribution oil-immersed transformers. It opens when the…
+ Shutter diameter: 1 and 2
+ Operating pressure: from 15 kPa up to 70 kPa
+ Wiring diagrams availability: no contacts

MESSKO® MPREC® test bench

The mobile MESSKO® MPREC® test bench checks and logs the accuracy and function of new and used pressure relief devices. It offers added convenience…
+ Use in the lab, in the test field, during commissioning or during maintenance
+ Simple and safe handling
+ Self-explanatory software and evaluation
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