DECS-200 BESTCOMS Software 5-13
On-Line OEL Setting, Medium Current Time.
Sets the duration for the medium current setpoint of the on-
line, summing-point, overexcitation limiter. A setting of 0 to 120 seconds may be entered in 1 second
increments.
On-Line OEL Setting, Low Current Level.
Establishes the low-level current setpoint for the on-line,
summing-point, overexcitation limiter. A setting of 0 to 15 Adc may be entered in 0.1 Adc increments.
OEL (Takeover)
Takeover Overexcitation Limiter tab functions are illustrated in Figure 5-17 and described in the following
paragraphs.
Off-Line Settings, Low Current Level.
Establishes the low-level current setpoint for the off-line, takeover-
style, overexcitation limiter. A setting of 0 to 20 Adc may be entered in 0.1 Adc increments.
Off-Line Settings, High Current Level.
Establishes the high-level current setpoint for the off-line, takeover-
style, overexcitation limiter. A setting of 0 to 30 Adc may be entered in 0.1 Adc increments.
Off-Line Settings, Time Dial.
Sets the time delay for the off-line, takeover-style, overexcitation limiter. A
setting of 0.1 to 20 seconds may be entered in 0.1 second increments.
Figure 5-17. Setting Adjustments Screen, OEL (Takeover) Tab
On-Line Settings, Low Current Level.
Establishes the low-level current setpoint for the on-line, takeover-
style, overexcitation limiter. A setting of 0 to 15 Adc may be entered in 0.1 Adc increments.
On-Line Setting, High Current Level.
Establishes the high-level current setpoint for the on-line, takeover-
style, overexcitation limiter. A setting of 0 to 30 Adc may be entered in 0.1 Adc increments.
On-Line settings, Time Dial.
Sets the time delay for the on-line, takeover-style, overexcitation limiter. A
setting of 0.1 to 20 seconds may be entered in 0.1 second increments.
Off-Line Curve and On-Line Curve Checkboxes.
Checking these boxes displays a plot of the takeover-
style off-line and on-line overexcitation limiter curves. Curve magnification is adjusted by the Zoom X,
Zoom Y, Zoom XY, and Zoom OUT buttons.
UEL
Underexcitation Limiter tab functions are illustrated in Figure 5-18 and described in the following
paragraphs.
UEL Settings, UEL Curve Type Selection.
Selects either a user-configured or internally-configured
underexcitation limiting curve. Selecting “Customized” enables the user to create a custom UEL curve
that matches specific generator characteristics. When “Internal” is selected, the DECS-200 automatically
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