Basler BE1-11g Instruction Manual page 510

498
Setting
Circuit 1 Tap 2.00
Circuit 2 Tap 2.00
Mode Percent
Differential
Slope Mode Average
Min. Rest. Pickup 0.10
(MOT)
Restraint Slope 1 20
(%)
nd
2 Slope Pickup 3.00
(MOT)
Restraint Slope 2 40
(%)
(Optional) Enabled
Unrestrained
Tripping Mode
(Optional) 2
Unrestrained
Tripping Pickup
Time Delay (ms) 100
(Optional) Shared
Harmonics Mode
nd
(Optional) 2 12
Harmonic (%)
(Optional) 5 th 35
Harmonic (%)
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic previously shown in
Figure 321.
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.
Phase Current Differential (87) Test
Value BESTCOMSPlus Screen
System Parameters, Transformer
Setup
System Parameters, Transformer
Setup
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)
Protection, Current, Phase
Differential (87)
Protection, Current, Phase,
Differential (87)
Protection , Current, Phase
Differential (87)
9424200994 Rev U
Description
Sets the tap for circuit 1 to
2.00 A secondary
Sets the tap for circuit 2 to
2.00 A secondary
Sets the type of operation
protection to traditional
phase current differential
Sets the element to operate
using average 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%
Enables the unrestrained
element
Sets the operate current
pickup for unrestrained
tripping to 2x tap
Sets the trip time delay to
100 ms
Sets the harmonic restraint
for shared phase operation
Sets the second harmonic
restraint threshold to 12%
of the fundamental
Sets the fifth harmonic
restraint threshold to 35%
of the fundamental
BE1-11g