Research and Education

Safe Power Supply for Research and Education

The veterinary medical training establishment in Vienna was founded by Empress Maria Theresa in 1765. The school is the second-oldest of its kind in the world, and the longest in existence in German-speaking countries. Over the past, it has developed from an Imperial and Royal Horse Cure and Operation School into a University for Veterinary Medicine.

New building with dependable engineering

The significance of veterinary medical sciences for man, beast and the environment has grown considerably over the years, as has also interest in this area of specialisation. At some point, the veterinary teaching facilities and structures in Vienna simply became too small, requiring construction of a completely new veterinary medicine campus. The project involved was the largest ever tackled by the Austrian Ministry of Science and Transport. At a site measuring 156,000 square metres in size in the 21st municipal district, 47 buildings have since been built in keeping with modern standards. Costing a total sum of 3,800 million Austrian shillings, the resulting complex consists of six clinics and 19 institutes that provide 560 professors, assistants and staff as well as 3,000 students with ideal conditions for study and research.

The enormous scale of the complex required a power supply system that is extremely reliable while offering a high uptime ratio to ensure the smooth operation of the research and education facilities. This requirement has been met with the MODAN 6000 modular switchgear system and the LD and BD2 busbar systems, all by Moeller, which proved to be an experienced and reliable partner for the project.

Technical details

The university has a 20 kV medium-voltage ring system which links all components with a significant power draw. In turn, these components then supply elements with lower power requirements. The medium-voltage ring is linked to the public power system run by Wienstrom, the local power operator, via two substations. In addition, two emergency power generators each delivering 800 kVA are also linked to the ring. By incorporating the normal mains distributors and lines, it has been possible to implement an emergency power supply to all components at minimal investment cost.

Via seven stations, the medium-voltage ring supplies a total of twenty 20/0.4 kV transformers with an individual capacity of 630 kVA. Thirty-four Moeller MODAN 6000 low-voltage main distribution units with 242 individual switchpanels are connected to these transformers, whereby the separate distributors are linked by LD busbars with the appropriate connection systems. Most of the MODAN 6000 feed and coupling panels installed feature MDPW withdrawable-unit technology, whilst MDMR plug-in units have been used for the output panels. The system design also mainly features power breakers, and a TN-C-S system was selected involving earth-leakage circuit breakers for units with medical functions. Horizontally arranged BD2 contact rail systems have been installed in the basement areas of the buildings to supply the individual rising main busbars with power. Energy supply management and the evaluation of all specific data from the main distributors are performed by a central higher-level control system.

The MODAN 6000 switching system and the LD and BD2 busbar system by Moeller more than satisfy the requirements for both system availability and operational reliability at one of the largest public building complexes in Vienna, enabling the educational and research activities of the veterinary university to proceed without a hitch.