Controls and tests

Stator

  • Measuring of stator winding insulation resistance, total and by phases
  • Measuring of the stator winding polarization index, total and by phases
  • Measuring of stator winding leakage currents, total and by phases
  • Measuring of stator winding electric capacity, total and by phases
  • Measuring of dielectric losses factor tg δ by phases
  • Measuring of partial discharges by phases
  • Testing of stator winding dielectric strength at high voltage, 50 Hz
  • Control and testing of the stator packet by induction magnetization of 1 T, using thermographic IC-camera imaging
  • Testing of the inter-winding insulation by low energy surge voltage (nondestructive method)
  • Evaluation of electric generator and motor operation quality during operation
  • Recording and the FFT analysis of dissipating magnetic fields of el. generators and motors during operation

Rotor

  • Measuring of rotor winding insulation resistance
  • Measuring of the rotor winding polarization index
  • Measuring of rotor winding leakage currents
  • Measuring of the rotor winding resorption index
  • Measuring of rotor winding electric capacity
  • Measuring of rotor winding ohmic resistance, total and by poles
  • Control of inter-pole connections by measuring the voltage drop at inter-pole connections
  • Measuring of rotor winding impedance, total and by poles
  • Testing of the inter-winding insulation by low energy surge voltage (nondestructive method)
  • Testing of rotor winding dielectric strength
  • Testing of cage bars
  • Squirrel-cage motors quality testing