Functional Test Report - Basler BE1-11g Instruction Manual

Generator protection system
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492
Step 3:
With the same polarizing current applied, increase the A-phase current until OUT2 closes.
Swing the angle of the applied current +90 degrees and –90 degrees away from the 0. Verify
that OUT2 opens at approximately 90 degrees lagging and 270 degrees lagging. OUT2 should
remain closed from 90 through 0 to 270 degrees lagging (defined as forward trip direction).
Step 4:
Repeat steps 1 through 4 for "Reverse Polarization by selecting Reverse direction on the
Protection, Current, Instantaneous Overcurrent (50-2) screen. BE1-11g operation will occur at
180 degrees lagging. Swing the angle of the applied current +90 degrees and –90 degrees
away from the 180 degrees. Verify that OUT2 opens at approximately 90 degrees lagging and
270 degrees lagging. OUT2 should remain closed from 90 through 180 to 270 degrees lagging
(defined as reverse trip direction).
Step 5:
(Optional.) Repeat steps 1 through 5 for 50-4, 50-5, and 50-6. Setup commands in Table 217
and operational settings in Table 223 must be modified accordingly.
Step 6:
(Optional.) Repeat steps 1 through 5 for settings group 1, 2, and 3.
Step 7:
(Optional.) Repeat steps 1 through 6 with CT Circuit 2 selected as the CT source for the
instantaneous overcurrent (50) and directional overcurrent (67) elements, and 67-2 as the
directional source, for protection systems equipped with two sets of CTs. In Step 1, D7 with F7,
D8 with F8.

Functional Test Report

Steps
4-6
Positive-Sequence Voltage Polarizing, Phase Overcurrent Elements
7-10
Negative-Sequence Voltage Polarizing, Phase Overcurrent Elements
11-18
Negative-Sequence Voltage Polarizing, Negative-Sequence Overcurrent Elements
19-22
Negative-Sequence Voltage Polarizing, Ground Overcurrent Elements
23-32
Zero-Sequence Voltage Polarizing, Ground Overcurrent Elements
1-6
Zero-Sequence Current Polarization
Directional Overcurrent (67) Test
Function
9424200994 Rev U
Pass/Fail
P / F
P / F
P / F
P / F
P / F
P / F
BE1-11g

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