Basler Electric DECS-400 - Manual (Page 96)

84 9369700990 Rev R
Figure 49. Limiters Window, UEL Tab
Reactive Power (Leading kVAR). When the Curve Selection setting is “Custom”, these setting fields
establish the reactive power points of the underexcitation limiter curve. Depending on whether a three-
point or five-point curve is selected, either three or five setting fields are enabled to accept point values.
When the Curve Selection setting is “Internal”, only the first setting field is enabled and a UEL curve is
internally generated based on the value entered in the field. The range for each setting field is based on
the generator ratings entered on the Rated Data tab of the System Configuration screen.
Takeover OEL
The Takeover OEL tab has two setting groups: Primary and Secondary. The Primary and Secondary
buttons select between the primary and secondary Takeover Overexcitation Limiter settings. In the default
logic schemes provided with the DECS-400, a contact input is used to select either the primary or
secondary Takeover OEL settings.
Takeover OEL functions are shown in Figure 50 and described in the following paragraphs.
Off-Line – Low Level. This setting configures the low-level current setpoint for the takeover-style, off-line
overexcitation limiter. A setting of 0 to 12.00 Adc may be entered in 0.01 Adc increments.
Off-Line – High Level. This setting configures the high-level current setpoint for the takeover-style, off-line
overexcitation limiter. A setting of 0 to 11,999 Adc may be entered in 0.01 Adc increments.
Off-Line – Time Dial. This setting establishes the time delay for the takeover-style, off-line overexcitation
limiter. A setting of 0.1 to 20.0 seconds may be entered in 0.1 second increments.
On-Line – Low Level. This setting configures the low-level current setpoint for the takeover-style, on-line
overexcitation limiter. A setting of 0 to 12 Adc may be entered in 0.01 Adc increments.
On-Line – High Level. This setting configures the high-level current setpoint for the takeover-style, on-line
overexcitation limiter. A setting of 0 to 11,999 Adc may be entered in 0.01 Adc increments.
On-Line – Time Dial. This setting establishes the time delay for the takeover-style, on-line overexcitation
limiter. A setting of 0.1 to 20.0 seconds may be entered in 0.1 second increments.
BESTCOMS™ Software DECS-400