Basler DECS-250 - Generator Protection Functions

31-6 9440300990
Specifications DECS-250
Power Factor Operating Mode
Setpoint Range ................................ 0.5 to 1.0 (lagging) and –0.5 to -1.0 (leading), in increments of 0.005
Regulation Accuracy ........................ ±0.02 PF of the PF setpoint for the real power between 10 and 100%
at the rated frequency
Parallel Compensation
Modes ............................................... Reactive Droop, Line Drop, and Reactive Differential (Cross-Current)
Cross-Current Input Burden ............. Can exceed 1 VA if external resistors are added to the CT circuit for
cross-current compensation
Cross-Current Input Terminals ......... CCCT+, CCCT–
Setpoint Range
Reactive Droop ................................ 0 to +30% of Rated Voltage
Line Drop .......................................... 0 to 30% of Rated Voltage
Cross-Current ................................... –30 to +30% of Primary CT Current
Generator Protection Functions
Overvoltage (59) and Undervoltage (27)
Pickup
Range ............................................... 1 to 600,000 Vac
Increment ......................................... 1 Vac
Time Delay
Range ............................................... 0.1 to 60 s
Increment ......................................... 0.1 s
Loss of Sensing
Time Delay
Range ............................................... 0 to 30 s
Increment ......................................... 0.1 s
Voltage Balanced Level
Range ............................................... 0 to 100% of Positive Sequence Voltage
Increment ......................................... 0.1%
Voltage Unbalanced Level
Range ............................................... 0 to 100% of Positive Sequence Voltage
Increment ......................................... 0.1%
Overfrequency (81O) and Underfrequency (81U)
Pickup
Range ............................................... 30 to 70 Hz
Increment ......................................... 0.01 Hz
Time Delay
Time Delay Range ........................... 0 to 300 s
Increment ......................................... 0.1 s
Voltage Inhibit (81U only)
Range ............................................... 50 to 100% of Rated Voltage
Increment ......................................... 1%