Operation
77
6.2.2 LOAD SHEDDING CONTROL
The Load Shedding Control feature (if enabled) allows for a maximum of five load-shedding steps.
When the generator is about to take load, the configured number of Load Shedding Control Outputs at
Startup will energise. This configurable setting allows (for instance) certain loads to be removed from
the generator prior to the set’s load switch being closed. This can be used to ensure the initial loading
of the set is kept to a minimum, below the Load Acceptance specification of the generating set.
The generator is then placed on load. The Load Shedding Control scheme begins.
When the load reaches the Load Shedding Trip level, the Trip Delay timer will start. If the generator
loading is still high when the timer expires, the first Load shedding Control output will energise. When
the load has been above the trip level for the duration of the timer the ‘next’ Load shedding Control
output will energise and so on until all Load Shedding Control outputs are energised.
If at any time the load falls back below the Load Shedding Return level, the Return Time will start. If
the load remains below the return level when the timer has expired the ‘highest’ Load Shedding
Control output that has been energised will be de-energised. This process will continue until all outputs
have been de-energised.
When the set enters a stopping sequence for any reason the Load Shedding control’ outputs will de-
energise at the same time as the generator load switch is signalled to open.
Example screen shot of Load Shedding Control setup in the DSE Configuration Suite
To Next Page
Loading...
Need help?
General
