Basler BE1-11g Instruction Manual page 413

Generator protection system
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9424200994 Rev N
Setting
Inhibit Level
10 V
Timing Mode
Definite
27X-1 AUX
Enabled
Step 2:
Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 283.
Blocking is disabled.
OUT1 closes for 27X-1 Trip.
OUT2 closes for 27X-1 Pickup.
Fault recording is enabled.
Step 3:
Use BESTCOMSPlus to open the Protection, Voltage, Undervoltage (27X-1) screen and send
the first row of test settings in Table 149 to the BE1-11g.
Step 4:
Prepare to monitor the 27X-1 function operation. Operation can be verified by monitoring OUT2
(see Figure 283).
Step 5:
Connect and apply a 120 Vac, single-phase voltage source to the Vx input, terminals C17
(polarity) and C18 (non-polarity).
Step 6:
Slowly decrease the voltage until OUT2 closes and record the pickup. Verify that there is a 27X-
1-AUX target on the front-panel display. Slowly increase the voltage until OUT2 opens and
record the reset. Reset the target.
Step 7:
Verify the pickup and reset accuracy at 70 Vac for a pickup setting of 65 V and 25 Vac for a
pickup setting of 20 V as listed in Table 149. Record the results.
Step 8:
(Optional.) Repeat steps 1 through 7 for the B-phase and C-phase voltage inputs.
Step 9:
(Optional.) Repeat steps 1 through 8 for settings group 1, 2, and 3.
Step 10: (Optional.) Repeat steps 1 through 9 for 27X-2, 27X-3, and 27X-4.
Timing Verification (Vx Fundamental Mode)
Step 1:
Use BESTCOMSPlus to open the Protection, Voltage, Undervoltage (27X-1) screen and send
the first row of test settings in Table 150 to the BE1-11g for settings group 0.
BE1-11g
Value
BESTCOMSPlus Screen
Protection, Voltage,
Undervoltage (27X-1)
Protection, Voltage,
Undervoltage (27X-1)
Target Configuration, Targets
Figure 283. BESTlogicPlus Settings (Vx Fundamental Mode)
Table 149. Pickup Test Settings (Vx Fundamental Mode)
Pickup Setting
115 V
65 V
20 V
Description
Sets inhibit level to 10 V
Selects definite timings
Enables Vx Fundamental target
for 27X-1
Time Delay
50 ms
50 ms
50 ms
Auxiliary Undervoltage (27X) Test
401

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