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

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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 (Overpower)

Step 1: Using Table 224 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 224. Reverse-Overpower Test Settings

Pickup

Direction

Over Under

500 W

Reverse

Over

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: Set A-phase current to lag the voltage by 180 degrees and slowly increase the current from 0

amps until OUT2 closes (1/3 of the three-phase setting) and record the pickup. Verify the 32-1-
A-Over target on the front-panel display. Decrease A-phase current until OUT2 opens and
record the dropout. 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 to 0

degrees I lag E 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.

Forward Tripping Direction (Underpower)

Step 1: Using Table 225 as a guide, send the 32-1 settings to the BE1-11g. Prior to each directional

test, reset the BE1-11g targets from the previous test.

Table 225. Forward-Underpower Test Settings

Pickup

Direction

Over Under

500 W

Forward

Under

250 W

Forward

Under

50 W

Forward

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). Note that
OUT2 is closed with no current applied.

Step 3: Apply 4 amps A-phase current (in phase with the voltage) 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. Under power pickup will occur within

±3% of the 32-1

pickup setting (500 watts = 5 amps, 100 volts, 0 degrees I lag E)/3.

BE1-11g

Power (32) Test