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