Generator rewinds to extend lifetime

For hydrogenerator maintenance, rewinding, and redesign, choose Sulzer. We can rewind stators up to 65 MVA, 13.8 kV and 7.6 m diameter; we also re-engineer replacement parts for lifetime extension. We are your best partner for the overhaul of your generator.

We provide hydrogenerator maintenance
Roosevelt Dam, 40MVA 13.8kV 48 pole during stator rewind
Roosevelt Dam, 40MVA 13.8kV 48 pole during stator rewind
Our in-house coil manufacturing facility minimizes outage times and maximizes efficiency improvement. These gains are possible because our coils are designed, manufactured and tested in-house.

Services for hydrogenerators include:

  • Site maintenance, overhauls and inspections
  • Generator dismantling and reassembly
  • Stator rewind
  • Stator core supply and restack
  • Supply of stator coil and winding kits
  • Rotor winding (field) repair, reinsulation or replacement
  • DC to AC exciter conversion with rotating diode assembly
  • Controls, protection inspection, and upgrade
  • Condition monitoring
  • Troubleshooting
  • Generator redesign to improve efficiency or increase output
  • Generator commissioning
  • Inspection of structural components via Non-Destructive Testing (NDT)
  • Supply of replacement air-water heat exchangers
  • Refurbishment of white metal/babbitt bearings

We keep your plant running safely and reliably.

How can we help you?

Talk or write to our experts to find your best solution.

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