Reverse tripping direction (underpower), Functional test report, Forward tripping direction (overpower) – Basler Electric BE1-11g User Manual

Page 506

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494

9424200994 Rev N

Step 4: With the BE1-11g picked up (OUT2 closed), change the angle of the applied current to lag the

voltage by 180 degrees and verify that OUT2 opens. This verifies that the 32-1 function is
operating in the forward trip direction and not in the reverse direction.

Step 5: Repeat steps 1 through 4 for the 250 W and 50 W pickup settings in Table 225. Record the

results.

Step 6: (Optional.) Repeat steps 1 through 5 for B-phase and C-phase currents. (Consult the

Power

(32) Protection

chapter for operating details.)

Step 7: (Optional.) Repeat steps 1 through 6 using 32-2 in place of 32-1.

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

Step 9: (Optional.) Repeat steps 1 through 8 with CT2 as the bus CT selection for protection systems

equipped with two sets of CTs. In step 2 replace D1 with F1, D2 with F2, etc.

Reverse Tripping Direction (Underpower)

Step 1: Using Table 226 as a guide, send the 32-1 settings to the BE1-11g. Prior to each test, reset the

BE1-11g targets from the previous test.

Table 226. Reverse-Underpower Test Settings

Pickup

Direction

Over Under

500 W

Reverse

Under

Step 2: Connect and apply a 100 Vac, three-phase voltage source at nominal frequency to terminals

C13 (A-phase), C14 (B-phase), C15 (C-phase), and C16 (neutral). Connect a variable ac
current source to terminals D1 (A-phase polarity) and D2 (A-phase non-polarity).

Step 3: Apply 4 amps A-phase current to lag the voltage by 180 degrees noting that OUT2 drops out.

Slowly decrease the current until OUT2 closes (1/3 of the three-phase setting) and record the
pickup. Verify that there is a 32-1-A-Under target on the front-panel display. Increase A-phase
current until OUT2 opens and record the reset. Pickup will occur within

±3% of the 32-1 pickup

setting (500 watts = 5 amps, 100 volts, 180 degrees I lag E)/3.

Step 4: With the BE1-11g picked up (OUT2 closed), change the angle of the applied current so that it’s

in phase with the voltage and verify that OUT2 opens. This verifies that the 32-1 function is
operating in the reverse trip direction and not in the forward direction.

Step 5: (Optional.) Repeat steps 1 through 4 for B-phase and C-phase currents. (Consult the

Power

(32) Protection

chapter for operating details.)

Step 6: (Optional.) Repeat steps 1 through 5 using 32-2 in place of 32-1.

Step 7: (Optional.) Repeat steps 1 through 6 for settings group 1, 2, and 3.

Step 8: (Optional.) Repeat steps 1 through 7 with CT2 as the bus CT selection for protection systems

equipped with two sets of CTs. In step 2 replace D1 with F1, D2 with F2, etc.

Functional Test Report

Forward Tripping Direction (Overpower)

Pickup Setting Range = 1 to 6,000 Watts for 5A sensing

1 to 1,200 Watts for 1A sensing

Pickup Accuracy =

±3 or ±2 W, whichever is greater

Dropout should occur between 95-99% of the actual pickup value.

Power (32) Test

BE1-11g

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