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6 FUNCTIONAL TESTS (USER SETTINGS)
1.
Protection Settings:
Z3DISTANCE
(301)
Z3PHASE = YES
(304)
Z3GRND = NO
(302)
Z3PHREACH = [_________] ohms,
V
= [_________] V,
NOM 3
I
= [_________] A,
T
øI
= [_________]°,
3
2.
Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–6 for the appropri-
ate phase under test.
3.
Set the relay to the Zone 3 Phase test mode for the appropriate phase under test. For example: ZONE 3 AB ON
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠+120°.
4.
Set the fault current, I
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is 180° out of
5.
op
phase with the line to which it is shorted.
Set the fault current to I
6.
check that the A1 contact closes when the voltages are within 7% of V
7.
Reduce the fault current to zero.
8.
Return Zone 3 ground Z3GRND to your specific setting.
1.
Protection Settings:
Z4DISTANCE
(401)
Z4PHASE = YES
(405)
Z4GRND = NO
(402)
Z4PHREACH = [_________] ohms,
V
= [_________] V,
NOM 4
I
= [_________] A,
T
øI
= [_________]°,
4
2.
Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–6 for the appropri-
ate phase under test.
3.
Set the relay into the Zone 4 Phase test mode for the appropriate phase under test. For example: ZONE 4 AB ON
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠+120°.
4.
Set the fault current, I
, phase angle to øI = [________], lagging. Note that the leading phase angle is 180° out of
5.
op
phase with the line it is shorted to.
6.
Set the fault current to I
check that the A1 contact closes when the voltages are within 7% of V
7.
Reduce the fault current to zero.
8.
Return Zone 4 ground Z4GRND to your specific setting.
When testing is completed, verify that all settings are returned to your specified values. It may be helpful to print out the set-
tings and check them one by one.
GE Power Management
= [________] amps rms. Simultaneously reduce the voltages of the faulted phases, and
T
= [________] amps rms. Simultaneously reduce the voltages of the faulted phases, and
T
ALPS Advanced Line Protection System
6.5.10 T18 – ZONE 3 PHASE REACH, M3 FAULTS
.
NOM
6.5.11 T19 – ZONE 4 PHASE REACH, M4 FAULTS
.
NOM
6.5.12 ENDING FUNCTIONAL TESTS (USER SETTINGS)
6.5 ZONE REACH TESTS
6-17
6
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