Winco DSE7300 Series - Manual (Page 72)

DSE Model 7000 Series Control and Instrumentation System Operators Manual
72 Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 5 15/10/2009 ADM
6.2 DUMMY LOAD / LOAD SHEDDING CONTROL
NOTE:- Dummy Load / Load Shedding Control is only available on DSE7300 series controllers V4 or
above. This feature is not available on DSE7200 series.
This feature may be enabled by the system designer to ensure the loading on the generator is kept to a nominal
amount. If the load is low, ‘dummy loads’ (typically static load banks) can be introduced to ensure the engine is not
too lightly loaded. Conversely as the load increases towards the maximum rating of the set, non-essential loads can
be shed to prevent overload of the generator.
6.2.1 DUMMY LOAD CONTROL
The dummy load control feature (if enabled) allows for a maximum of five dummy load steps.
When the set is first started, all configured Dummy Load Control outputs are de-energised.
Once the generator is placed onto load, the generator loading is monitored by the Dummy Load Control scheme.
If the generator loading falls below the Dummy Load Control Trip setting (kW), the Dummy Load Control Trip Delay
is displayed on the module display. If the generator loading remains at this low level for the duration of the timer, the
first Dummy Load Control output is energised. This is used to energise external circuits to switch in (for instance) a
static load bank.
The generator loading has now been increased by the first dummy load. Again the generator loading is monitored.
This continues until all configured Dummy Load Control outputs are energised.
Should the generator loading rise above the Dummy Load Return level, the Dummy Load Return Delay begins.
If the loading remains at these levels after the completion of the timer, the ‘highest’ active Dummy Load Control
output is de-energised. This continues until all Dummy Load Control outputs have been de-energised.
Example screen shot of Dummy Load Control setup in the DSE Configuration Suite