A53 Z0 9 0020 L En Technical documentation
Chapter : Additional functions
2/ Load/unload according to power
The goal is to avoid that a large number of parallel generators are running just above the unload threshold.
Ex: 4 generators are running at 35% while 2 generators can supply this power with 70% each.
In this mode, each unit calculates the power that will remain on the bus bar (in % for each engine
remaining) if it decides to stop (and open its breaker). If this percentage is under the required threshold
[E1915], then the unit will stop otherwise it will wait until threshold is reached. (See Figure 65 - Unload
according power)
The [E1914] and [E1915] parameters are available in level 2 in the menu “Configuration/Power plant/Load
dep stop”.
Used to select the "unload dependant stop" sequence
Unload threshold (in %) when an unload dependant stop sequence has
been selected
Table 41 –Parameters used during load/unload according to power
Note : In this mode, the unload threshold [E1254] is not used.
Figure 65 - Unload according power
In red, unload without load/unload according power option : E1914=No and E1924=20%
In blue, unload with load/unload according power option : E1914=Yes and E1915=75%
0%
20%
40%
60%
80%
100%
120%
0 200 400 600 800 1000 1200 1400
Generator load and stop level
Power Plant with 4 GENSETS
320 KW each
256
192
128
30%
26%
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