Repairs and upgrades of transformers/reactors with power ratings of up to 80 MVA and 70 MVAr

  • Assembly and disassembly at the work station and transport to the facility,
  • Internal inspection of the active part of the transformer,
  • Repair or replacement of the core,
  • Rewinding windings,
  • Replacement of the active part with a new one with the possibility of an upgrade (including change of the rated voltage levels, short circuit voltage, connection group)
  • Increasing the rated power,
  • Vacuum drying of windings and active parts,
  • Replacement of the on-load tap changers,
  • Treatment, replacement and disposal of transformer oil,
  • Leakage repair, including replacement of the main seal,
  • Modernization of hardware:
    • Replacement of radiators and fans,
    • Modernization of radiator valves,
    • Replacement of electrical installation,
    • Installation of ball valves, magnetic oil level indicators, safety valves
    • Installation of control cabinets
  • Sandblasting and painting of tanks and radiators with polyurethane and chemically hardening paints,
  • Post-repair tests and final measurements,
  • Possibility of renting a replacement transformer for the duration of repair (with a power rating of 16 MVA)
  • Inspections and maintenance of transformers at the work station
  • Other services agreed upon individually with the customer

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