Electrical courses

Generator maintenance


A detailed review of the maintenance of four-stroke diesel engines.

Course objectives 

Enable the participants to understand and explain the philosophy, planning, and procedures for maintenance of a large four-stroke diesel engine.


  • Maintenance philosophies i.e.
    • Running hour based
    • Condition based
    • Corrective maintenance
  • The generator construction, components and their function.
  • Maintenance tasks and intervals
  •  recommended by the manufacturer.
  • Planning of inspection and maintenance of the generator.
  • Safety hazards and precautions.
  • Review of inspection, tests and interpretation of the results of i.e.:
    • Visual inspection
    • Partial discharge
    • Insulation resistance test
    • Polarization index
    • Stator resistance
    • Dielectric absorption test
    • Dielectric discharge test
    • Voltage drop test
    • Air gap
    • PD measurements
    • Excitation gear
    • Coolers
    • Bearings

Generator maintenance

Target group
All electrical maintenance staff. 


Tuition methods
Lectures and practical exercises at the plant.


Course duration
5 days.


The course is assumed implemented in connection with a generator inspection.