Basler Electric BE1-11t - Manual (Page 477)

9424200995 Rev H 465
81 - Frequency Protection
O/U
Pickup
Setting Range ........................................................... 15 to 70 Hz
Accuracy....................................................................
±0.01 Hz
Dropout ...................................................................... 0.02 Hz
±0.01 Hz of the actual pickup value
Time Delay
Setting Range ........................................................... 0 to 600,000 ms
Accuracy....................................................................
±1% or ±2 cycles, whichever is greater, plus 3
cycle recognition time for time delays < 50 ms
ROC
Pickup
Setting Range ........................................................... 0.2 to 20 Hz/sec (positive, negative, or either)
Accuracy....................................................................
±2% or ±0.1 Hz/sec of the setting, whichever is
greater
Dropout ......................................................................
±3% of the actual pickup value
Over/Underfrequency Inhibit
Setting Range ........................................................... 15 to 70 Hz
Increment .................................................................. 0.01 Hz
Accuracy....................................................................
±0.01 Hz
Negative-Sequence Inhibit
Setting Range ........................................................... 0 to 99% of nominal voltage
Accuracy....................................................................
±0.5% or ±1 V, whichever is greater
Time Delay
Setting Range ........................................................... 0 to 600,000 ms
Accuracy....................................................................
±0.5% or ±1 cycle, whichever is greater, plus
recognition time
*
* Recognition time = 2 cycles for 0.57 > pickup, 4 cycles for 0.24 > pickup, 8 cycles for 0.08 > pickup, 16
cycles at pickup
O/U/ROC Voltage Inhibit
Setting Range ........................................................... 15 to 250 V
Accuracy....................................................................
±2% or ±1 V, whichever is greater
87 - Phase Current Differential Protection
Restrained Differential
5 Ampere CT Pickup Accuracy .................................
±5% or ±75 mA, whichever is greater
1 Ampere CT Pickup Accuracy .................................
±5% or ±25 mA, whichever is greater
Response Time ......................................................... <2 cycles at 5 times pickup
<3 cycles at 1.5 times pickup
TAP
5 Ampere CT Setting Range ..................................... 2.00 to 20.0 A
1 Ampere CT Setting Range ..................................... 0.40 to 4.00 A
Minimum Restraint Pickup (I
op
)
Setting Range ........................................................... 0.1 to 1.00 per unit
2 nd Slope Pickup (I
res
)
Setting Range ........................................................... 0.1 to 20.0 per unit
BE1-11t Specifications - 25 Hz Operation