Basler Electric BE1-11g - Manual (Page 468)

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Pickup Verification (I2 Mode)
Step 1: Use BESTCOMSPlus to send the operational settings in Table 204 to the BE1-11g. Reset all
targets.
Table 204. 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 (51-1) Enables 51-1 function for I2
mode
Source CT Circuit 1 Protection, Current, Instantaneous
Overcurrent (51-1) Selects CT circuit 1 as the
source
51-1 Neg
SEQ Enabled Target Configuration, Targets Enables Neg SEQ target
for 51-1
Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 304.
•
Blocking is disabled.
•
OUT1 closes for 51-1 Trip.
•
OUT2 closes for 51-1 Pickup.
•
Fault recording is enabled.
Figure 304. BESTlogicPlus Settings (I2 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 205.
Table 205. Pickup Test Settings (I2 Mode)
Sensing Input
Type
Range Pickup Setting Time Dial Time Curve
5 A
Low 0.5 A 0 I2
Middle 5.0 A 0 I2
High 9.0 A 0 I2
1 A
Low 0.1 A 0 I2
Middle 1.0 A 0 I2
High 1.8 A 0 I2
Step 4: Prepare to monitor the 51-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 304).
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
Inverse Overcurrent (51) Test BE1-11g