Basler BE1-11g Instruction Manual page 486

474
Setting Value
Phase CT 1
Ratio
Element I2
Mode
Source CT Circuit 1
51-1 Neg Enabled
SEQ
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 318.
•
Blocking is disabled.
•
OUT1 closes for 51-1 Trip.
•
OUT2 closes for 51-1 Pickup.
•
Fault recording is enabled.
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 210.
Sensing Input
Type
5 A
1 A
Step 4: Prepare to monitor the 51-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 318).
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.
Inverse Overcurrent (51) Test
Table 209. Operational Settings (I2 Mode)
BESTCOMSPlus Screen
System Parameters, Sensing
Transformers
Protection, Current, Instantaneous
Overcurrent (51-1)
Protection, Current, Instantaneous
Overcurrent (51-1)
Target Configuration, Targets
Figure 318. BESTlogicPlus Settings (I2 Mode)
Table 210. Pickup Test Settings (I2 Mode)
Range Pickup Setting
Low 0.5 A
Middle 5.0 A
High 9.0 A
Low 0.1 A
Middle 1.0 A
High 1.8 A
9424200994 Rev U
Description
Sets phase CT ratio to 1
Enables 51-1 function for I2
mode
Selects CT circuit 1 as the
source
Enables Neg SEQ target
for 51-1
Time Dial Time Curve
0
0
0
0
0
0
I2
I2
I2
I2
I2
I2
BE1-11g