Electric facilities and equipment up to and over 1000 volts:

• Resistance of Earthing systems;
• Resistance of lightning protection systems;
• Impedance Zs of the loop "phase - protective conductor";
• Time of cutoff, resistance of protective grounding;
• Insulation resistance at constant voltage.

Test with increased voltage according to NIEMS-1995:

• Power cable lines up to 20kV;
• Complex switchgears (Complete Distribution Stations) up to 12kV;
• Bus systems up to 12kV;
• Measuring transformers up to 12kV;
• Dry reactors up to 12kV;
• Ports and bushings up to 12kV;
• Circuit breakers and disconnecting switches up to 12kV;
• Electric motors up to 10kV;
• Devices, secondary circuits and systems up to 1000V.

Active resistance at:

• Transitional resistance of moving and stationary compounds in complete switchgears (Complete Distribution Stations), open switchgears;
• Coils of transformers and electric motors.

Power transformers - dry and filled with oil / Two-coil and Three-coil / single-phase and three-phase / with and without voltage regulation under load; Low, medium and high voltage:

• Coefficient of performance;
• Insulation resistance at constant voltage;
• Active resistance of coils;
• Linkage group.