Underfrequency pickup verification – Basler Electric BE1-11m User Manual

Page 340

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9424200996 Rev L

Step 2: Use BESTCOMSPlus to configure the BESTlogicPlus programmable logic shown in Figure 248.

Blocking is disabled.

OUT1 closes for 81-1 Trip.

OUT2 closes for 81-1 Pickup.

Fault recording is enabled.

Figure 248. BESTlogicPlus Settings (Overfrequency)

Step 3: Use BESTCOMSPlus to open the Protection, Frequency, Frequency (81-1) screen and send

the first row of test settings in Table 122 to the BE1-11m.

Table 122. Pickup Test Settings (Overfrequency)

Pickup Setting

Time Delay

65 Hz

0 ms

67 Hz

0 ms

69 Hz

0 ms

Step 4: Prepare to monitor the 81-1 function operation. Operation can be verified by monitoring OUT2

(see Figure 248).

Step 5: Connect and apply a 120 Vac, 60-hertz voltage source to terminals C13 (A-phase) and C16

(neutral).

Step 6: Slowly increase the frequency of the applied voltage until OUT2 closes and record the pickup.

Verify that there is an 81-1-Over target on the front-panel display. Slowly decrease the
frequency until OUT2 opens and record the dropout.

Step 7: Repeat step 6 for the 67 Hz and 69 Hz pickup settings listed in Table 122. Record the results.

Step 8: (Optional.) Repeat steps 1 through 7 for settings groups 1, 2, and 3.

Step 9: (Optional.) Repeat steps 1 through 8 for 81-2, 81-3, and 81-4.

Underfrequency Pickup Verification

Step 1: Use BESTCOMSPlus to send the operational settings in Table 123 to the BE1-11m. Reset all

targets.

Table 123. Operational Settings (Underfrequency)

Setting

Value

BESTCOMSPlus Screen

Description

Element Mode

Under

Protection, Frequency (81-1)

Enables 81-1 function for Under mode

Source

Phase VT

Protection, Frequency (81-1)

Sets source to Phase VT

Voltage Inhibit

40 V

Protection, Frequency (81-1)

Sets voltage inhibit pickup to 40 V

81-1 Under

Enabled

Target Configuration, Targets

Enables Under target for 81-1

Frequency (81) Test

BE1-11m

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