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5 FUNCTIONAL TESTS (FACTORY SETTINGS)
7.
Reduce the fault current to zero. Note that the trip target indication concurs with the fault. An AG fault is displayed as
TRIP: AG Z1 "DIST", where "DIST" is the displayed target.
8.
Repeat the test for BG and CG faults.
1.
Protection settings:
Z1DISTANCE
(101)
Z1PHASE = NO
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = YES
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GRND = NO
Z4DISTANCE
(401)
Z4PHASE = NO
(405)
Z4GRND = NO
2.
Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–12 for the appro-
priate phase under test.
3.
Set the relay to test mode 15 (Any Zone 2 Ground). The LUI displays: ANY Z2 GRND ON
4.
Set the voltage inputs to the following values:
VA: 67 volts rms ∠0°,
VB: 67 volts rms ∠–120°,
VC: 67 volts rms ∠+120°.
, to the phase-angle value listed below (increase VA, VB, and VC to 75 V when ∠ I
5.
Set the fault current, I
op
∠I DEGREES
VOLTS RMS
–49
56 to 63
–79
65 to 72
–109
56 to 63
†
Reference only
6.
Set the fault current to 4.6 (0.9) amps rms. Reduce the voltage of the faulted phase and check that the A1 contact
closes when the voltage is within the limits above.
7.
Reduce the fault current to zero. Note that the trip target indication concurs with the fault. An AG fault is displayed as
TRIP AG Z2 "DIST", where "DIST" is the displayed target.
8.
Repeat the test for BG and CG faults.
1.
Protection Settings:
Z1DISTANCE
(101)
Z1PHASE = NO
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = NO
GE Power Management
5.3.3 T12 – ZONE 2 GROUND REACH, MTG GROUND FAULTS
DISPLAYED TARGET
–
146 to 154
–
5.3.4 T13 – ZONE 3 GROUND REACH, M3G GROUND FAULTS
ALPS Advanced Line Protection System
5.3 ZONE REACH AND TIMER TESTS
†
5
= –79°).
op
5-9
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