Basler BE1-11g Instruction Manual page 501

9424200994 Rev U
Setting Value
Pickup 0 A Protection, Current, Instantaneous Overcurrent
(50-1)
Pickup 2.0 A Protection, Current, Instantaneous Overcurrent
(50-2)
Pickup 0 A Protection, Current, Instantaneous Overcurrent
(50-3)
Step 16: 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). Reduce the A-phase voltage to 40 Vac.
View the Metering screen on the front-panel display to verify that negative-sequence voltage is
greater than 1 volt.
Step 17: Set A-phase current source to 0 amps with an angle of 80 degrees lagging (same as negative-
sequence torque angle) and slowly increase the current until OUT2 closes. Decrease A-phase
current until OUT2 just drops out. Pickup will occur within ±2% of the 50-2 pickup setting (1.96 A
to 2.04 A). Dropout will occur at approximately 95% of the actual pickup value. Verify that there
is a 50-2-67-Residual target on the front-panel display.
Step 18: With the same voltage still applied, increase the A-phase current until OUT2 closes. Swing the
angle of the applied current +90 degrees and –90 degrees away from the 80-degree negative-
sequence torque angle. Verify that OUT2 opens at approximately 170 degrees lagging and 350
degrees lagging. OUT2 should remain closed from 170 through 80 to 350 degrees lagging
(defined as forward trip direction).
Negative-Sequence Voltage Polarizing, Ground Overcurrent Elements
Step 19: Using Table 221 as a guide, send the settings to the BE1-11g.
Table 221. Directional, Negative-Sequence Polarizing, Neutral Operational Settings
Setting Value
Pickup 0 A Protection, Current, Instantaneous Overcurrent
(50-1)
Pickup 2.0 A Protection, Current, Instantaneous Overcurrent
(50-2)
Pickup 0 A Protection, Current, Instantaneous Overcurrent
(50-3)
Step 20: 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). Reduce the A-phase voltage to 40 Vac.
View the Metering screen on the front-panel display to verify that negative-sequence voltage is
greater than 1 volt.
Step 21: Set A-phase current source to 0 amps with an angle of 80 degrees lagging (same as torque-
sequence line angle) and slowly increase the current until OUT2 closes. Decrease A-phase
current until OUT2 just drops out. Pickup will occur within ±2% of the 50-2 pickup setting (1.96 A
to 2.04 A). Dropout will occur at approximately 95% of the actual pickup value. Verify that there
is a 50-2-67-Residual target on the front-panel display.
Step 22: With the same voltage still applied, increase the A-phase current until OUT2 closes. Swing the
angle of the applied current +90 degrees and –90 degrees away from the 80-degree positive-
sequence torque angle. Verify that OUT2 opens at approximately 170 degrees lagging and 350
degrees lagging. OUT2 should remain closed from 170 through 80 to 350 degrees lagging
(defined as forward trip direction).
Zero-Sequence Voltage Polarizing, Ground Overcurrent Elements
Step 23: Using Table 222 as a guide, send the settings to the BE1-11g.
BE1-11g
Table 220. Directional, Neutral Operational Settings
BESTCOMSPlus Screen
BESTCOMSPlus Screen
Description
Sets 50-1 pickup to 0 amps
Sets 50-2 pickup to 2.0
amps
Sets 50-3 pickup to 0 amps
Description
Sets 50-1 pickup to 0 amps
Sets 50-2 pickup to 2.0 amps
Sets 50-3 pickup to 0 amps
Directional Overcurrent (67) Test
489