Review of activities

Tests at HV laboratory

The test equipment of the HV Laboratory makes possible to carry out following tests of HV equipment with system voltage up to 750 kV:

Field tests and measurements

  • measurement of switching over voltages
  • partial discharge measurements on power transformers (off-line)
  • on-line partial discharge measurements of surge arresters and instrument transformers
  • 50 Hz electric and magnetic field measurements
  • measurements of pollution degree and measurements of pollution state of external insulation
  • interfering electromagnetic field measurements in the range of 0,15 - 300 MHz along UHV overhead lines and substations (interference source searching)