Professional repair and maintenance from a single source

Thanks to our many years of experience and cooperation with renowned generator manufacturers for major companies in heavy industry and the energy sector, Baumüller Services is your partner when it comes to the professional reconditioning and repair of your generators.

Manufacturer-independent and sustainable full-service

From low, to medium, to high voltage motors. Whether synchronous or asynchronous – used as an emergency generator, wind power generator or hydroelectric generator. We give the power back to your machine. The range of services of Baumüller Reparaturwerk includes everything from the replacement of defective components to the complete overhaul of electrical machines in the multi-megawatt range.

Diagnostics using the latest testing technology

Our testing facilities meet the latest technical and environmental requirements, ensuring reliable diagnostics and the highest quality standards. Processes such as vacuum pressure impregnation ensure air bubble-free infusion of all winding parts, thereby increasing durability.

Complete project processing from a single source

With us, adherence to schedules and costs are constants you can depend on. Our range covers the full spectrum of project processing, from disassembly, transport and repair to installation and re-commissioning.
With mutually coordinated steps, you always retain a complete overview of the overhaul – right up to customer-specific acceptance. All the important measurements and tests are documented and compiled in a detailed report. In short, we are your service provider for the entire life cycle of your machines and systems.


Our goal is your benefit: High availability and reliability

  • Complete project processing from a single source by an experienced partner
  • Extended service life of your machines through good-as-new reconditioning
  • Customer-specific acceptance of overhauled generators
  • Increased availability through schedulable overhauls
  • Availability 24 hours a day, 7 days a week and fast on-site troubleshooting when necessary
  • Better calculability through fixed dates and fixed prices

Our maintenance and services

  • Customized maintenance service for your generators
  • Condition assessment of the generators
  • On-site inspection
  • Cleaning of the winding and rewinding of your generators
  • Renewal of brush holders and carbon brushes
  • Renewal of laminated cores
  • Renewal of slip rings
  • Modernization and renovation of pole wheels
  • Replacement of bearings
  • Three-phase and direct current generators
  • Thermal cleaning and de-insulation
  • Load running incl. checking the controller in our own test bay
  • Painting of your motor
  • Power supply and machine protection test
  • Preventive maintenance
  • High availability of general wear parts. Inquiries at:

Our diagnostic capabilities at our test bay for generators

  • Load run up to 700 kW
  • Tests according to VDE 0530, IEC 60034, and EN 60034
  • Partial discharge measurement (PD measurement)
  • TAN delta measurement
  • Vibration measurement
  • Polarization index (PI)
  • Insulation measurement
  • Concentricity check on collector
  • Thermography
  • High-voltage test (HV test)
  • Impulse tests


  • Heavy industry / steel industry
  • Chemical and petrochemical industry
  • Power generation / power plant technology
  • Wind power technology
  • Bioenergy / combined heat and power plants (CHP)
  • Railroad / rail technology
  • Oil and gas industry