Basler Electric DECS-250N - Manual (Page 70)

54 9440500990 Rev D
Protection DECS-250N
Figure 40. Sync-Check Protection Settings
A Sync-Check Mode: Select Disabled or Enabled.
B Sync-Check Voltage Difference (%): Adjustable from 0 to 50% in 0.1% increments.
C Sync-Check Slip Angle (Degrees): Adjustable from 1 to 99
° in 0.1° increments.
D Sync-Check Slip Freq (Hz): Adjustable from 0.01 to 0.5 Hz in 0.01 Hz increments.
E Angle Compensation (°): Adjustable from 0.0 to 359.9° in 0.1° increments.
F Gen Freq > Bus Freq: Enable (checked) or Disable (unchecked)
Generator Frequency Less Than 10 Hertz
A Generator Below 10 Hz condition is annunciated when the generator frequency decreases below 10 Hz
or when residual voltage is low at 50/60 Hz. A Generator Below 10 Hz annunciation is automatically reset
when the generator frequency increases above 10 Hz or the residual voltage increases above the
threshold.
Configurable Protection
BESTCOMSPlus Navigation Path: Settings Explorer, Protection, Configurable Protection
HMI Navigation Path: Settings, Protection, Configurable Protection
The DECS-250N has eight configurable protection elements which can be used to supplement the
standard DECS-250N protection. BESTCOMSPlus configurable protection settings are illustrated in
Figure 41. To make the protection elements easier to identify, each element can be given a user-assigned
name
A . A protection element is configured by selecting the parameter B to be monitored and then
establishing the operating characteristics for the element. Any one of the following parameters may be
selected.
•
Analog Input 1, 2, 3, 4, 5, 6, 7, 8
•
Auxiliary Input Current (mA)
•
Auxiliary Input Voltage
•
Bus Frequency
•
Bus Voltage: V
AB
, V
BC
, or V
CA
•
EDM Ripple
•
Exciter Field Current
•
Exciter Field Voltage
•
Gen Current: I
A
, I
B
, I
C
, or Average
•
Gen Frequency
•
Gen Power Factor
•
Gen Voltage: V
AB
, V
BC
, V
CA
, or Average