458
Sensing Input Type
5 A
1 A
Step 4:
Prepare to monitor the 50-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 311).
Step 5:
Connect a current source to terminals D1 and D2 (A-phase).
Step 6:
Slowly increase the A-phase current until OUT2 closes and record the pickup. Verify that there
is a 50-1-Residual 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 (3I0 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 191 to the BE1-11g for settings group 0.
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 0.45 A to BE1-11g terminals D1 and D2 (A-phase).
Step 4:
Step the A-phase current up to 0.55 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 191. 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 (I2 Mode)
Step 1:
Use BESTCOMSPlus to send the operational settings in Table 192 to the BE1-11g. Reset all
targets.
Instantaneous Overcurrent (50) Test
Table 190. Pickup Test Settings (3I0 Mode)
Range
Low
Middle
High
Low
Middle
High
Table 191. Timing Test Settings (3I0 Mode)
Pickup Setting
0.5 A
0.5 A
0.5 A
Pickup Setting
0.5 A
5.0 A
20.0 A
0.1 A
1.0 A
4.0 A
Time Delay
2,000 ms
5,000 ms
10,000 ms
9424200994 Rev U
Time Delay
0 ms
0 ms
0 ms
0 ms
0 ms
0 ms
BE1-11g
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