GE LPS-O Instruction Manual page 163

6 FUNCTIONAL TESTS (USER SETTINGS)
4. Set the voltage inputs to the following values:
VA: 67 volts rms ∠0°,
VB: 67 volts rms ∠–120°,
VC: 67 volts rms ∠+120°.
5. Set the fault current, I
180° out of phase with the line to which it is shorted.
6. Set the fault current to I
and check that the A1 contact closes when the voltages are within 7% of V
7. Reduce the fault current to zero. Note that the trip target indication concurs with the fault. For example, an
AB fault is displayed as:
TRIP: AB Z3 "DIST"
where "DIST" is the displayed target.
8. Repeat the test for phase BC and CA faults.
GE Power Management
, phase angle to ∠ I
= [________]° lagging. Note that the leading phase angle is
op 3
= [________] A rms. Simultaneously reduce the voltages of the faulted phases
T
LPS-O Line Protection System
6.3 ZONE REACH TESTS
.
NOM 3
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