Basler BE1-11m - Page 369

9424200996 63-5
BE1-11m Instantaneous Overcurrent (50) Test
Pickup Verification (I2 Mode)
Step 1: Use BESTCOMSPlus to send the operational settings in Table 63-7 to the BE1-11m. Reset all
targets.
Table 63-7. Operational Settings (I2 Mode)
Setting
Value
BESTCOMSPlus Screen
Description
Phase CT
Ratio
1
System Parameters, Sensing
Transformers
Sets phase CT ratio to 1
Element
Mode
I2
Protection, Current,
Instantaneous Overcurrent (50-1)
Enables 50-1 function for I2 mode
Source
CT Circuit 1
Protection, Current,
Instantaneous Overcurrent (50-1)
Selects CT circuit 1 as the source
50-1 Neg
SEQ
Enabled
Target Configuration, Targets
Enables Neg SEQ target for 50-1
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure
63-3.
• Blocking is disabled.
• OUT1 closes for 50-1 Trip.
• OUT2 closes for 50-1 Pickup.
• Fault recording is enabled.
Figure 63-3. BESTlogicPlus Settings (I2 Mode)
Step 3: Use BESTCOMSPlus to open the Protection, Current, Instantaneous Overcurrent (50-1) screen
and send the low range test settings (minimum pickup setting) to the BE1-11m for your sensing
input type in Table 63-8.
Table 63-8. Pickup Test Settings (I2 Mode)
Sensing Input Type Range Pickup Setting Time Delay
5 A
Low
0.5 A
0 ms
Middle
5.0 A
0 ms
High
9.0 A
0 ms
1 A
Low
0.1 A
0 ms
Middle
1.0 A
0 ms
High
1.8 A
0 ms
Step 4: Prepare to monitor the 50-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 63-3).
Step 5: Connect a current source to terminals D1 and D2 (A-phase). For a single-phase input test, I2 =
Ia / 3. Therefore, the BE1-11m should pick up at a value of three times the setting value when