Basler Electric BE1-11m - Manual (Page 384)

372 9424200996 Rev L
Setting Value BESTCOMSPlus Screen Description
27/59 Mode PN System Parameters, Sensing
Transformers Sets 27/59 mode to phase-
neutral
Circuit 1 Tap 2.00 System Parameters, Sensing
Transformers Sets the tap for circuit 1 to
2.00 A secondary
Circuit 2 Tap 2.00 System Parameters, Sensing
Transformers Sets the tap for circuit 2 to
2.00 A secondary
Mode Phase
Differential Protection, Current, Phase
Differential (87) Sets the type of operation
protection to traditional phase
current differential
Slope Mode Maximum Protection, Current, Phase
Differential (87) Sets the element to operate
using maximum restraint
current
Min. Rest.
Pickup (MOT) 0.10 Protection, Current, Phase
Differential (87) Sets the minimum amount of
operate current required for a
trip to 0.10x tap
Restraint
Slope 1 (%) 20 Protection, Current, Phase
Differential (87) Sets the 1 st slope of the
restraint characteristic to 20%
2 nd Slope
Pickup (MOT)
3.00 Protection, Current, Phase
Differential (87) The 2 nd slope is active when
the measured maximum
restraint current is greater 3x
tap
Restraint
Slope 2 (%) 40 Protection, Current, Phase
Differential (87) Sets the 2 nd slope of the
restraint characteristic to 40%
Time Delay
(ms) 100 Protection, Current, Phase
Differential (87) Sets the trip time delay to 100
ms
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 263.
•
Blocking is disabled.
•
OUT1 closes for 87 Trip.
•
OUT2 closes for 87 Pickup.
•
Fault recording is enabled.
Figure 263. BESTlogicPlus Settings (87R)
Step 3: Prepare to monitor the 87R function operation. Operation can be verified by monitoring OUT2
(see Figure 263).
Step 4: To test the Minimum Restrained Pickup setting, connect two balanced three-phase current
sources to the BE1-11m 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).
Phase Current Differential (87) Test BE1-11m