Institut für Energietechnik (IET)

High Voltage Laboratory

Welcome in the High Voltage Laboratory of HSR Rapperswil 


Thanks to our extensive experience in high voltage engineering we can provide high quality research and support in all high voltage related areas. 

The equipment in our new laboratory is state of the art 

  • 700kV 40kJ Impulse generator
  • 150kV 40kVA AC test transformer
  • +/- 200kV Direct current cascade
  • 60kV 148kJ Capacitor bank


Our research and test experience covers a broad range of expertise:

  • lightning impulse tests according to IEC 60060-1
  • partial discharge measurements with AC and DC
  • disconnector tests according to IEC 62271-102 with a synthetic test circuit
  • insulation tests with AC and DC
  • long time voltage endurance tests
  • measurement of very fast transients


OST Ostschweizer Fachhochschule
Eichwiesstrasse 6
CH-8645 Jona


Prof. Dr. Michael Schueller
+41 (0)58 257 43 37