Basler Electric BE1-11m - Manual (Page 391)

9424200996 Rev L 379
Step 8: (Optional.) Repeat steps 1 through 7 with CT2 as the bus CT selection for protection systems
equipped with two sets of CTs. In step 2, replace D1 with F1, D2 with F2, etc.
Reverse Tripping Direction (Overpower)
Step 1: Using Table 166 as a guide, send the 32-1 settings to the BE1-11m. Prior to each test, reset the
BE1-11m targets from the previous test.
Table 166. Reverse-Overpower Test Settings
Pickup Direction Over Under
500 W Reverse Over
Step 2: Connect and apply a 100 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 3: Set A-phase current to lag the voltage by 180 degrees and slowly increase the current from 0
amps until OUT2 closes (1/3 of the three-phase setting) and record the pickup. Verify that there
is a 32-1-A-Over target on the front-panel display. Decrease A-phase current until OUT2 opens
and record the dropout. Pickup will occur within
±3% of the 32-1 pickup setting (500 watts = 5
amps, 100 volts, 180 degrees I lag E)/3.
Step 4: With the BE1-11m picked up (OUT2 closed), change the angle so that it’s in phase with the
voltage and verify that OUT2 opens. This verifies that the 32-1 function is operating in the
reverse trip direction and not in the forward direction.
Step 5: (Optional.) Repeat steps 1 through 4 for B-phase and C-phase currents. (Consult the Power
(32) Protection chapter for operating details).
Step 6: (Optional.) Repeat steps 1 through 5 for settings group 1, 2, and 3.
Step 7: (Optional.) Repeat steps 1 through 6 with CT2 as the bus CT selection for protection systems
equipped with two sets of CTs. In step 2, replace D1 with F1, D2 with F2, etc.
Forward Tripping Direction (Underpower)
Step 1: Using Table 167 as a guide, send the 32-1 settings to the BE1-11m. Prior to each directional
test, reset the BE1-11m targets from the previous test.
Table 167. Forward-Underpower Test Settings
Pickup Direction Over Under
500 W Forward Under
250 W Forward Under
50 W Forward Under
Step 2: Connect and apply a 100 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). Note that
OUT2 is closed with no current applied.
Step 3: Apply 4 amps A-phase current (in phase with the voltage) noting that OUT2 drops out. Slowly
decrease the current until OUT2 closes (1/3 of the three-phase setting) and record the pickup.
Verify that there is a 32-1-A-Under target on the front-panel display. Increase A-phase current
until OUT2 opens and record the reset. Under power pickup will occur within
±3% of the 32-1
pickup setting (500 watts = 5 amps, 100 volts, 0 degrees I lag E)/3.
Step 4: With the BE1-11m picked up (OUT2 closed), change the angle to lag the voltage by 180
degrees and verify that OUT2 opens. This verifies that the 32-1 function is operating in the
forward trip direction and not in the reverse direction.
Step 5: Repeat steps 1 through 4 for the 250 W and 50 W pickup settings in Table 167. Record the
results.
BE1-11m Power (32) Test