Basler BE1-11g Instruction Manual page 507

9424200994 Rev U
Setting
Slope Mode Maximum
Min. Rest. Pickup 0.10
(MOT)
Restraint Slope 1 20
(%)
nd
2 Slope Pickup 3.00
(MOT)
Restraint Slope 2 40
(%)
Time Delay (ms) 100
(Optional) Independent
Harmonics Mode
nd
(Optional) 2 12
Harmonic (%)
(Optional) 5 th 35
Harmonic (%)
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 321.
•
Blocking is disabled.
•
OUT1 closes for 87 Trip.
•
OUT2 closes for 87 Pickup.
•
Fault recording is enabled.
Step 3: Prepare to monitor the 87R function operation. Operation can be verified by monitoring OUT2
(see Figure 321).
Step 4: To test the Minimum Restrained Pickup setting, connect two balanced three-phase current
sources to the BE1-11g in ABC rotation: 0.5∠0°, 0.5∠–120°, 0.5∠120° amps to terminals D1
through D6 and 0.5∠180°, 0.5∠60°, 0.5∠–60° amps to terminals F1 through F6 (0.25x tap).
Step 5: Slowly increase the A-phase current in CT circuit 1 or 2 until OUT2 closes and record the
pickup. This should occur at 0.70 A ±0.05 A. Verify that there is an 87A target on the front-panel
display.
Step 6: Slowly decrease the A-phase current in CT circuit 1 or 2 until OUT2 reopens and record the
dropout. See the functional test report for acceptable ranges.
Step 7: Reset to the current levels in Step 5 and reset all targets.
BE1-11g
Value BESTCOMSPlus Screen
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase,
Differential (87)
Protection , Current, Phase
Differential (87)
Description
Sets the element to
operate using maximum
restraint current
Sets the minimum amount
of operate current required
for a trip to 0.10x tap
st
Sets the 1 slope of the
restraint characteristic to
20%
nd
The 2 slope is active
when the measured
maximum restraint current
is greater 3x tap
nd
Sets the 2 slope of the
restraint characteristic to
40%
Sets the trip time delay to
100 ms
Sets the harmonic restraint
for independent phase
operation
Sets the second harmonic
restraint threshold to 12%
of the fundamental
Sets the fifth harmonic
restraint threshold to 35%
of the fundamental
Phase Current Differential (87) Test
495