- preventive, emergency repair repairs of power transformers;
- replacement of all rubber seals;
- dismantling, repair or replacement, installation of component parts of the transformer: expander, cooling system radiators, fans, disk locks, current transformers, on-load tap-changer / ПБВ switching device, exhaust pipe, LV inputs, high-voltage bushings;
- replacement of selicogel, sorbents;
- replacement or topping up of transformer oil;
- regeneration with the addition of antioxidant additives of transformer oil, cleaning, drying, oil degassing;
- cleaning, degreasing, and painting of the transformer;
- adjustment of electrical equipment for open and closed switchgear with voltage from 0.4 to 150 kV, these are: control cabinets, cells, oil and vacuum circuit breakers, disconnectors, dischargers, batteries.