63-6 9424200996
Instantaneous Overcurrent (50) Test BE1-11m
applying only a single-phase input. For example, to determine the pickup current value required
for a 1 A BE1-11m with a pickup setting of 0.1, it would require 0.1 times 3 or 0.3 amperes of
input current.
Step 6: Slowly increase the A-phase current until OUT2 closes and record the pickup. Verify that there
is a 50-1-Neg SEQ target on the front-panel display. Slowly decrease the applied current until
OUT2 opens and record the dropout.
Step 7: Repeat step 6 for the middle and high range pickup settings for your sensing input type. Record
the results.
Step 8: (Optional.) Repeat steps 1 through 7 for settings group 1, 2, and 3.
Step 9: (Optional.) Repeat steps 1 through 8 for 50-2, 50-3, 50-4, 50-5, and 50-6.
Step 10: (Optional.) Repeat steps 1 through 9 with CT Circuit 2 as the source for protection systems
equipped with two sets of CTs. In step 5, replace D1 with F1, D2 with F2, etc.
Timing Verification (I2 Mode)
Step 1: Use BESTCOMSPlus to open the Protection, Current, Instantaneous Overcurrent (50-1) screen
and send the first row of test settings in Table 63-9 to the BE1-11m for settings group 0.
Table 63-9. Timing Test Settings (I2 Mode)
Step 2: Prepare to monitor the 50-1 timings. Timing accuracy is verified by measuring the elapsed time
between a sensing current change and OUT1 closing.
Step 3: Connect and apply 1.45 A to BE1-11m terminals D1 and D2 (A-phase). For a single-phase input
test, I2 = Ia / 3. Therefore, the BE1-11m should pick up at a value of three times the setting
value when applying only a single-phase input. For example, to determine the pickup current
value required for a 1 A BE1-11m with a pickup setting of 0.1, it would require 0.1 times 3 or 0.3
amperes of input current.
Step 4: Step the A-phase current up to 1.55 A. Measure the time delay and record the result.
Step 5: Repeat step 4 for the 5,000 ms and 10,000 ms time delay settings of Table 63-9. Record the
results.
Step 6: (Optional.) Repeat steps 1 through 5 for settings group 1, 2, and 3.
Step 7: (Optional.) Repeat steps 1 through 6 for 50-2, 50-3, 50-4, 50-5, and 50-6.
Step 8: (Optional.) Repeat steps 1 through 7 with CT Circuit 2 as the source for protection systems
equipped with two sets of CTs. In step 5, replace D1 with F1, D2 with F2, etc.
Pickup Verification (IG Mode)
Step 1: Use BESTCOMSPlus to send the operational settings in Table 63-10 to the BE1-11m. Reset all
targets.
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