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5 FUNCTIONAL TESTS (FACTORY SETTINGS)
1. Setting:
Z1DISTANCE
(101)
Z1PHASE = NO
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = NO
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GRND = YES
Z4DISTANCE
(401)
Z4PHASE = NO
(405)
Z4GRND = NO
2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–14 for
the appropriate phase under test.
3. Set the relay to test mode 16 (Any Z3 Ground). The LUI displays:
ANY Z3 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°.
5. Set the fault current, I
op
I
= – 79°).
op
∠I Degrees
–49
–79
–109
†
Reference only
6. Set the fault current to 3.5 (0.7) 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 will
be displayed as follows:
TRIP: AG Z3 "DIST"
where "DIST" is the displayed target.
8. Repeat the test for phase BG and CG faults.
GE Power Management
5.3.4 T13 – ZONE 3 GROUND REACH, M3G GROUND FAULTS
, to the phase-angle value listed below (Increase VA, VB, and VC to 75V when ∠
Volts rms
Displayed Target
57 to 64
66 to 73
195 to 205
57 to 64
LPS-D Line Protection System
5.3 ZONE REACH AND TIMER TESTS
†
–
–
5
5-
13
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