Unloading:
In normal operation the load should not be reduced from high load to low load (much) faster
than the load is increased. Crash stop can be recognised with a large lever movement form
ahead to astern within some seconds, which overrides normal load reduction. In the
manoeuvring range, typically below 50% load, the load can be reduced without rate limitation.
Fig 2-3 Maximum Loading and Unloading capacity in gas
2.2.2.1 Maximum instant load steps
The electrical system must be designed so that tripping of breakers can be safely handled.
This requires that the engines are protected from load steps exceeding their maximum load
acceptance capability. If fast load shedding is complicated to implement or undesired, the
instant load step capacity can be increased with a fast acting signal that requests transfer to
diesel mode.
2-4 DBAD209883
Wärtsilä 46DF Product Guide2. Operating Ranges
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