Basler Electric BE1-11t - Manual (Page 398)

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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, 51-7, 51-8, and 51-9.
Step 8: (Optional.) Repeat steps 1 through 7 with CT Circuit 2 as the source. In step 3, replace D1 with
F1, D2 with F2, etc.
Pickup Verification (IG Mode)
Step 1: Use BESTCOMSPlus to send the operational settings in Table 182 to the BE1-11t. Reset all
targets.
Table 182. Operational Settings (IG Mode)
Setting Value BESTCOMSPlus Screen Description
Ground CT
Ratio 1 System Parameters, Sensing
Transformers Sets ground CT ratio to 1
Element
Mode IG Protection, Current, Instantaneous
Overcurrent (51-1) Enables 51-1 function for
IG mode
Source CT Circuit 1 Protection, Current, Instantaneous
Overcurrent (51-1) Selects CT circuit 1 as the
source
51-1 IND
GND Enabled Target Configuration, Targets Enables IND GND target
for 51-1
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 263.
•
Blocking is disabled.
•
OUT1 closes for 51-1 Trip.
•
OUT2 closes for 51-1 Pickup.
•
Fault recording is enabled.
Figure 263. BESTlogicPlus Settings (IG 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 BE1-11t for your sensing input
type in Table 183.
Step 4: Prepare to monitor the 51-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 263).
Step 5: Connect a current source to terminals D7 and D8 (IG).
Step 6: Slowly increase the ground current until OUT2 closes and record the pickup. Verify that there is
a 51-1-IND GND 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.
Inverse Overcurrent (51) Test BE1-11t