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6 FUNCTIONAL TESTS (USER SETTINGS)
1.
Protection Settings:
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = YES
(206)
Z2GRDREACH = [_________] ohms,
V
= [_________] V,
NOM 2
I
= [_________] A,
T
øI
= [_________]°,
2
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 the Zone 2 ground test mode for the appropriate phase under test. The LUI displays, for instance,
ZONE 2 AG ON
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠–240°.
4.
5.
Set the fault current, I
, phase angle to øI = [________]°, lagging.
op
Set the fault current to I
6.
T
tact closes when the voltage is within 7% of V
7.
Reduce the fault current to zero.
8.
Return Zone 2 phase, Z2PHASE, to your specific setting.
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 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
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠–240°.
4.
Set the fault current, I
, phase angle to øI = [________]°, lagging.
5.
op
6.
Set the fault current to I
T
tact 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.
GE Power Management
6.5.4 T13 – ZONE 2 GROUND REACH, MTG GROUND FAULTS
= [________] amps rms. Reduce the voltage of the faulted phase and check that the A1 con-
.
NOM
6.5.5 T14 – ZONE 3 GROUND REACH, M3G GROUND FAULTS
= [________] amps rms. Reduce the voltage of the faulted phase and check that the A1 con-
.
NOM
ALPS Advanced Line Protection System
6.5 ZONE REACH TESTS
6-13
6
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