Pack Run-of-River Power Plant

VERBUND's power plant at Pack is a run-of-river plant situated east of the town of Pack in Styria. It was constructed from 1929 until 1931.

*Source: ENTSO-E Production 2017

The storage power plant was built between 1929 and 1931 as a daily storage facility with a bottleneck capacity of 800 kW. Installed in the power house is a vertical machine set consisting of a Francis spiral turbine. The reservoir pack lies at an elevation of 867.7 metres and is dammed by a 33.2 metre-high gravity wall. Today, the run-of-river power plant generates an annual average of 2 GWh of electricity entirely from hydropower.
 
Turbines and generators: In terms of machinery, the small power plant is equipped with a Kaplan turbine with vertical shaft and a nominal output of 800 kW. The impeller has a diameter of 0.805 metres and can process a water volume of 3 m³/sec. at a speed of 600 rpm. The directly coupled 900 kVA three-phase synchronous generator has a nominal voltage of 5.52 kV.

Transformers: The generated energy is raised to 20 kV by an 800 kVA machine transformer and conducted via an open-air transmission line to the switchgear of the Arnstein power plant.