Basler BE1-11g Instruction Manual page 499

9424200994 Rev U
Step 3: Using Table 218 as a guide, send the settings to the BE1-11g. Prior to each directional test,
reset the BE1-11g targets from the previous test. Max Torque Angle setting, for positive and
zero sequence impedance angles is continuously adjustable between 0 and 90°, the default
setting of 80° is used in the test example.
Table 218. Negative-Sequence Polarization Operational Settings
Setting
Polarization IG=unchecked
Method Q=checked
V=unchecked
Pickup 2.5 A
Pickup 0 A
Pickup 0 A
Positive-Sequence Voltage Polarizing, Phase Overcurrent Elements
Step 4: Connect and apply a 120 Vac, three-phase voltage source at nominal frequency to terminals
C13 (A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Connect a variable ac
current source to terminals D1 (A-phase polarity) and D2 (A-phase non-polarity).
Step 5: Set A-phase current source to 0 amps with an angle of 80 degrees lagging (positive-sequence
torque angle) and slowly increase the current until OUT1 closes. Decrease A-phase current until
OUT1 just drops out. Pickup will occur within ±2% of the 50-1 pickup setting (2.45 A to 2.55A).
Dropout will occur at approximately 95% of the actual pickup value. Verify that there is a 50-1-
67-A target on the front-panel display.
Step 6: With three-phase voltage still applied, increase the A-phase current until OUT1 closes. Swing
the angle of the applied current +90 degrees and –90 degrees away from the 80-degree
positive-sequence torque angle. Verify that OUT1 opens at approximately 170 degrees lagging
BE1-11g
Figure 320. BESTlogicPlus Settings
Value BESTCOMSPlus Screen
Protection, Current, Directional
(67-1)
Protection, Current, Instantaneous
Overcurrent (50-1)
Protection, Current, Instantaneous
Overcurrent (50-2)
Protection, Current, Instantaneous
Overcurrent (50-3)
Description
Selects negative sequence
polarization
Sets 50-1 pickup to 2.5
amps
Sets 50-2 pickup to 0
amps
Sets 50-3 pickup to 0
amps
Directional Overcurrent (67) Test
487