Basler Electric BE2000E - Manual (Page 48)

40 9287500995 Rev B
Figure 22. Setting Adjustments Screen, Startup Tab
Engine Unloading Tab
The Engine Unloading tab settings of the Setting Adjustment screen are shown in Figure 23. Each setting
of the Engine Unloading tab is described in the following paragraphs.
Unloading Activation - Frequency (Hz).
This frequency is entered as a value below the underfrequency corner where the engine unloading
feature may be activated. A frequency value of 0.9 to 9.0 Hz can be entered in 0.1 Hz increments.
Unloading Activation - Rate (Hz/25 ms)
The engine unloading feature is activated when the frequency rate of change exceeds the setting of this
field. An unloading activation rate of 0 to 25.5 Hz per 25 ms can be entered in 0.1 Hz per 25 ms
increments.
Unloading Droop - Percentage (%)
The value in this field defines the percent drop in generator output voltage for each 1.5 percent decrease
in generator frequency when operating in the Engine Unloading mode. The Unloading Droop Percentage
is adjustable from 1 to 20 percent in 1 percent steps.
Unloading Droop - Time (sec)
This value defines the length of time that the Engine Unloading mode may be active before control is
passed to the normal Underfrequency mode of operation. Droop time is adjustable from 1 to 5 seconds in
1 second increments.
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BE2000E