Capital and current repairs of transformers and electric motors.

We carry out major and current repairs, service maintenance of oil transformers, dry, three-phase, single-phase, for various purposes: autotransformers, power, furnace, traction, special, in the power range from 40 kVA to 250,000 kVA, voltage from 0.4 kV to 220 kV , including those of foreign production, as well as carry out major and current repairs, service maintenance of electric machines of direct and alternating current, with power from 0.75 kW to 22,000 kW, voltage up to 10.5 kV, including foreign production. The main stages of transformer repair: • Repair of transformers without winding change, • Repair of transformers with winding change, • Production of LV, MV, HV windings of the transformer from new or refurbished wire, • Production of insulation, main insulation of the transformer, installation of the main insulation, • Repair of LV bushings , SN, VN, replacement of armored bushings with removable ones, replacement of non-hermetic high-voltage bushings with hermetic bushings, • Repair and replacement of attachments - fans, oil pumps, coolers, radiators, thermosiphon filters, thermal alarms, valves, • Repair, adjustment and replacement of PBV and OLTC switches, recording of an oscillogram and a circular diagram, • Drying, degassing and replacement of transformer oil, • Drying of solid insulation of power transformers at the installation site, • Repair of expanders with the possibility of upgrading the oil protection system (installation of film protection of transformer oil), • Tank repair transformer, • Mounting, dismantling, rolling of power transformers on site, • High voltage testing and measurements. The main stages of electric motor repair: • Assembly, disassembly of the electric motor, • Elimination of damage to the stator active steel, • Re-insulation, manufacture and installation of stator windings, • Replacement of insulating parts, • Repair of rotors (phase, squirrel-cage, synchronous), • Repair and replacement of mechanical components and parts (shafts, bearing shields), • Replacement of bearings, refilling of plain bearings, • Repair of DC electrical machine armature, • Collector repair, replacement of DC machine armature collectors, • Restoration of stator winding sections from old-year copper, • Production of stator winding sections from new copper, • Repair of brush-contact devices, • High-voltage tests and measurements.