Operation
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6.5.3 ENGINE RUNNING
Once the engine is running, the Warm Up timer, if selected, begins, allowing the engine to stabilise
before accepting the load.
If the common bus is measured to be ‘dead bus’, the load breaker is closed.
If the bus is measured to be ‘live bus’, synchronising takes place before the breaker is closed.
NOTE: The load transfer signal remains inactive until the Oil Pressure has risen. This
prevents excessive wear on the engine.
As the load increases and decreases, the DSE86xx series module (may (depending upon
configuration) add dummy loads or remove non-essential loads. This is configured as part of the Load
Shedding and Dummy Load control settings in the DSE Configuration Suite Software.
See section entitled Dummy Load / Load Shedding elsewhere in this document for further details.
Additionally, when configured as part of a multiset package, the generator may be automatically
started and stopped depending upon load requirements.
If in doubt, consult your system supplier for details of how your particular system has been configured.
If all start requests are removed, the stopping sequence will begin.
6.5.4 STOPPING SEQUENCE
The return delay timer operates to ensure that the starting request has been permanently removed
and is not just a short-term removal. Should another start request be made during the cooling down
period, the set will return on load.
If there are no starting requests at the end of the return delay timer, the load is ramped off the
generator being the breaker is opened and the cooling timer is initiated.
The cooling timer allows the set to run off load and cool sufficiently before being stopped. This is
particularly important where turbo chargers are fitted to the engine.
If the set is called to return to load before the cooling timer has expired, the Engine Running operation
is again followed.
After the cooling timer has expired, the set is stopped.
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