Basler Electric BE1-11m - Manual (Page 373)

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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 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, and 51-5.
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, Inverse Overcurrent (51-1) screen and
send the test settings in Table 156 to the BE1-11m for settings group 0.
Table 156. 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 BE1-11m terminals D1 and D2 (A-phase).
Step 4: Using the values listed in Table 157, apply the appropriate current values, and measure the
time between the application of current and the closure of OUT1. Record the results.
Table 157. 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
Step 5: Repeat step 4 for all of the current and time dial settings for your current sensing type.
Step 6: (Optional.) Repeat steps 1 through 5 for settings group 1, 2, and 3.
BE1-11m Inverse Overcurrent (51) Test