Basler BE1-11g - Page 467

9424200994 Rev N 455
Timing Verification (3I0 Mode)
Step 1: Use BESTCOMSPlus to open the Protection, Current, Inverse Overcurrent (51-1) screen and
send the test settings in Table 202 to the BE1-11g for settings group 0.
Table 202. Timing Test Settings (3I0 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 BE1-11g terminals D1 and D2 (A-phase).
Step 4: Using the values listed in Table 203, apply the appropriate current values, and measure the
time between the application of current and the closure of OUT1. Record the results.
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.
Step 7: (Optional.) Repeat steps 1 through 6 for 51-2, 51-3, 51-4, 51-5, 51-6, and 51-7.
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 3, replace D1 with F1, D2 with F2, etc.
Table 203. Timing Test Settings (3I0 Mode)
Sensing Type Time Dial Applied Current
5 A
0.5
1.00 A
2.50 A
12.50 A
5.0
1.00 A
2.50 A
12.50 A
9.9
1.00 A
2.50 A
12.50 A
1 A
0.5
0.20 A
0.50 A
2.50 A
5.0
0.20 A
0.50 A
2.50 A
9.9
0.20 A
0.50 A
2.50 A
BE1-11g Inverse Overcurrent (51) Test