Basler Electric BE1-11t - Manual (Page 397)

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Step 6: Slowly increase the A-phase current until OUT2 closes and record the pickup. Verify that there
is a 51-1-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 51-2, 51-3, 51-4, 51-5, 51-6, 51-7, 51-8, and 51-9.
Step 10: (Optional.) Repeat steps 1 through 9 with CT Circuit 2 as the source. In step 5, replace D1 with
F1, D2 with F2, etc.
Timing Verification (I2 Mode)
Step 1: Use BESTCOMSPlus to open the Protection, Current, Inverse Overcurrent (51-1) screen and
send the test settings in Table 180 to the BE1-11t for settings group 0.
Table 180. Timing Test Settings (I2 Mode)
Pickup Setting Time Curve
0.5 A (5 A sensing), 0.1 A (1 A sensing) I2
Step 2: Prepare to monitor the 51-1 timings. Timing accuracy is verified by measuring the elapsed time
between a sensing current change and OUT1 closing.
Step 3: Connect a current source to BE1-11t terminals D1 and D2 (A-phase).
Step 4: Using the values listed in Table 181, apply the appropriate current values, and measure the
time between the application of current and the closure of OUT1. Record the results.
Table 181. Timing Test Settings (I2 Mode)
Sensing Type Time Dial Applied Current
5 A
0.5
3.00 A
7.50 A
27.00 A
5.0
3.00 A
7.50 A
27.00 A
9.9
3.00 A
7.50 A
27.00 A
1 A
0.5
0.45 A
1.5 A
7.5 A
5.0
0.45 A
1.5 A
7.5 A
9.9
0.45 A
1.5 A
7.5 A
BE1-11t Inverse Overcurrent (51) Test