Repairs of electric engines

Revisions, repairs and rewinding of motors
  • Asynchronous squirrel cages up to 350 kW, incl. operation at testing facility
  • Asynchronous engines with wound anchor by 600 kW, incl. operation at testing facility
  • DC motors up do 5 MW, incl. operation at testing facility
  • VN motors up to 10 MW / 6 kV with an active bar length up to 1.5m; production of VN coils
  • VN machines up to 10 kV/5MW (individual solution)
  • Testing of motors under load at dynamometer up to 90 kW/2900 min-1 (possible even in generator condition)
  • Cleaning, washing, drying, impregnation, injection and replacement of machine bearings up to 20 t
Revisions, repairs and rewinding of transformers
  • NN transformers up to 100 kVA
  • Dry VN transformers (not poured by epoxy) up to 20 t
  • Rewinding and dry checks of oil VN transformers up to 20 t
  • Testing of transformers up to 10 kV at idle, impedance and voltage test
  • Recovery of transformer oils (filtration, vacuum degassing)
  • Testing of transformer and cable oils for breakdown voltage acc. to IEC 60 156-95
  • Cleaning, washing, drying, impregnation, injection and replacement of machine bearings up to 20 t
Testing and diagnostics
  • Complete diagnostic measurement of motors and transformers up to 6 kV at place (outside workshop)
  • Vibro diagnostic analysis of electrical failures and failures of bearings; optional vibro diagnosis of seating as well
  • Thermal diagnosis of electrical equipment by thermal camera or other equipment within the temperature range – 20°C to 1,200°C; IR photos of buildings IR snímky budov
Machine and equipment repairs
  • Repairs of hand tools – drills, grinders, saws, hand planes
  • Repairs of welding power supply for MMA of tryodyne type, thyristor welding machines, invertors, MIG/TIG supply
  • Production and remanufacturing of starting and sliding resistors in wire and alloyed configuration for crane engines with wound anchor, calculation of resistors for travels, strokes and turning of cranes
  • Rewinding of electromagnets for loads, magnetic boards for attachment
  • Repairs of welding machines, dynamos, starts, alternators, vibrators
  • Medium repairs and overhauls of electromagnets for loads
  • Welding of shafts using MIG, MAG methods
Dynamic balancing
We perform balancing of electromotor rotors, fans, rollers and other rotating parts in two planes at the modern stationary balancing SCHENCK machine acc. to CSN 01 1410 with these parameters:
  • Max. weight: 1600 kg
  • Max. diameter: 1600 mm
  • Max. length: : 2930 mm
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