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Rewinding
Rewinding
  • Disassembly of motor in workshop.
  • Cleaning of all components with high-pressure water cleaner.
  • Collection of winding data.
  • Immersion of motor in chemical tank to soften the varnish.
  • Removal of burnt stator/rotor coils.
  • Cleaning and anti-rust treatment of stator/rotor.
  • Insulation of stator/rotor coil slots using class H nomex paper.
  • Insertion of new coils into stator/rotor slots.
  • Immersion of completed of stator/rotor into class H varnish until all cavities between coils and lamination are filled with varnish.
  • Oven baking in an electrical controlled oven with gradual and controlled temperature rise up to minimum 120 degrees centigrade for a duration of 6 to 8 hours.
  • Remove excess varnish from stator/rotor laminations.
  • Dynamic balancing machine to balance rotating elements for quiet vibration free operation.
  • Skimming and mica undercutting of commutator and skimming of slipring where necessary.
  • Refitting of new bearings and assembly of motor.
  • Standard no load testing.
  • Spray painting.