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6 FUNCTIONAL TESTS (USER SETTINGS)
1. Protection Settings:
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GRND = YES
(305)
Z3GRDREACH = [_________] ohms,
V
= [_________] V,
NOM 3
I
= [_________] A,
T
øI
= [_________]°
3
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 the Zone 3 ground test mode for the appropriate phase under test. The LUI displays, for
instance:
ZONE 3 AG ON
4. Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠–240°.
5. Set the fault current, I
op
6. Set the fault current to I
the A1 contact closes when the voltage is within 7% of V
7. Reduce the fault current to zero.
8. Return Zone 3 phase, Z3PHASE, to your specific setting.
1. Protection Settings:
Z4DISTANCE
(401)
Z4PHASE = NO
(405)
Z4GRND = YES
(406)
Z4GRDREACH = [_________] ohms,
V
= [_________] V,
NOM 4
I
= [_________] A,
T
øI
= [_________]°,
4
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 the Zone 4 ground test mode for the appropriate phase under test. The LUI displays, for
instance:
ZONE 4 AG ON
4. Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠–240°.
5. Set the fault current, I
op
6. Set the fault current to I
the A1 contact closes when the voltage is within 7% of V
7. Reduce the fault current to zero.
8. Return Zone 4 phase, Z4PHASE, to your specific setting.
GE Power Management
6.5.5 T14 – ZONE 3 GROUND REACH, M3G GROUND FAULTS
, phase angle to øI = [________]°, lagging.
= [________] amps rms. Reduce the voltage of the faulted phase and check that
T
6.5.6 T15 – ZONE 4 GROUND REACH, M4G GROUND FAULTS
, phase angle to øI = [________]°, lagging.
= [________] amps rms. Reduce the voltage of the faulted phase and check that
T
LPS-D Line Protection System
6.5 ZONE REACH TESTS
.
NOM
.
NOM
6
6-
15
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