Basler BE1-11g - Page 466

454 9424200994 Rev N
Setting
Value
BESTCOMSPlus Screen
Description
Source
CT Circuit 1
Protection, Current, Instantaneous
Overcurrent (51-1)
Selects CT circuit 1 as the
source
51-1
Residual
Enabled
Target Configuration, Targets
Enables residual target for
51-1
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 303.
• Blocking is disabled.
• OUT1 closes for 51-1 Trip.
• OUT2 closes for 51-1 Pickup.
• Fault recording is enabled.
Figure 303. BESTlogicPlus Settings (3I0 Mode)
Step 3: Use BESTCOMSPlus to open the Protection, Current, Inverse Overcurrent (51-1) screen and
send the low range test settings (minimum pickup setting) to the BE1-11g for your sensing input
type in Table 201.
Table 201. Pickup Test Settings (3I0 Mode)
Sensing Input Type Range Pickup Setting Time Dial
5 A
Low
0.5 A
0
Middle
5.0 A
0
High
16.0 A
0
1 A
Low
0.1 A
0
Middle
1.0 A
0
High
3.2 A
0
Step 4: Prepare to monitor the 51-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 303).
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 51-1-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 51-2, 51-3, 51-4, 51-5, 51-6, and 51-7.
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.
Inverse Overcurrent (51) Test BE1-11g