Diagnostics of power equipment

Power transformers - an extended scope of electrical measurements, analysis of transformer oil according to a special program to assess the general condition of the transformer and the residual life for transformers that have completed their standard service life (25 years).
Measuring current and voltage transformers - measurements and tests according to a special program - tests before overhaul to determine the general condition and provide recommendations on the scope of repair work.

Synchronous generators, compensators and collector exciters - measurement of insulation resistance; tests with increased rectified voltage with leakage current measurement; insulation tests with increased voltage of industrial frequency; DC resistance measurement; measuring the resistance of the alternating current rotor winding; air gap measurement; taking the characteristics of a three-phase short circuit; removing the characteristics of the non-working stroke; test of the turn-to-turn insulation of the stator winding; determination of the characteristics of the collector exciter; stator core steel testing; testing the turbine generator in asynchronous mode; heating test of measuring the residual voltage on the stator winding of the generator with the AGP off in the rotor circle; designation of inductive resistance and time constants of the generator; checking the quality of the distillate; vibration measurement.
Determination of breakdown voltage, measurement of the tangent of the angle of dielectric losses, designation of the dielectric constant, determination of the specific volume resistance of transformer oil, determination of the gas content in transformer oil by chromatographic analysis, determination of the content of furin compounds by the chromatographic method.
Thermal imaging control by means of infrared technology.
Measurement of insulating characteristics of current transformers 110 - 750 kV, transformer bushings 110 - 750 kV under operating voltage.