Basler BE1-11g Instruction Manual page 471

9424200994 Rev U
Setting Value
Phase CT 1
Ratio
Element I2
Mode
Source CT Circuit 1
50-1 Neg Enabled
SEQ
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 312.
•
Blocking is disabled.
•
OUT1 closes for 50-1 Trip.
•
OUT2 closes for 50-1 Pickup.
•
Fault recording is enabled.
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 BE1-11g for your sensing
input type in Table 193.
Sensing Input Type
5 A
1 A
Step 4: Prepare to monitor the 50-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 312).
Step 5: Connect a current source to terminals D1 and D2 (A-phase). For a single-phase input test, I2 =
Ia / 3. Therefore, the BE1-11g should pick up at a value of three times the setting value when
applying only a single-phase input. For example, to determine the pickup current value required
for a 1 A BE1-11g with a pickup setting of 0.1, it would require 0.1 times 3 or 0.3 amperes of
input current.
BE1-11g
Table 192. Operational Settings (I2 Mode)
BESTCOMSPlus Screen
System Parameters, Sensing
Transformers
Protection, Current,
Instantaneous Overcurrent (50-1)
Protection, Current,
Instantaneous Overcurrent (50-1)
Target Configuration, Targets
Figure 312. BESTlogicPlus Settings (I2 Mode)
Table 193. Pickup Test Settings (I2 Mode)
Range
Low
Middle
High
Low
Middle
High
Description
Sets phase CT ratio to 1
Enables 50-1 function for I2 mode
Selects CT circuit 1 as the source
Enables Neg SEQ target for 50-1
Pickup Setting
0.5 A
5.0 A
9.0 A
0.1 A
1.0 A
1.8 A
Instantaneous Overcurrent (50) Test
459
Time Delay
0 ms
0 ms
0 ms
0 ms
0 ms
0 ms