Shaft Generator / PTO · Power Generation
A Wärtsilä shaft‑generator converts mechanical power from the main propulsion engine into electricity, providing an economical onboard power source without needing separate diesel generators.
| Insulation resistance test | every 6-12 months |
|---|---|
| Bearing inspection/lubrication | per manufacturer schedule, typically annually or condition-based |
| Clutch/coupling inspection | annually |
| Alignment check | at each dry-docking or after main engine/shaft work |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
Class checks that shaft generator/PTO changeover with diesel generators is tested and that protective relays correctly isolate the shaft generator on fault; insulation resistance and load test records are typically reviewed at survey.
Estimated lifetime: Shaft generators typically share the main engine's operating life and commonly remain in service 20+ years with periodic bearing and insulation maintenance.
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