GE ALPS - 5.4 Phase-To-Phase Zone Reach Testing; T16 - Zone 1 Phase Reach, M1 Faults

6-16 ALPS Advanced Line Protection System
GE Power Management
6.5 ZONE REACH TESTS 6 FUNCTIONAL TESTS (USER SETTINGS)
6
6.5.8 T16 – ZONE 1 PHASE REACH, M1 FAULTS
1. Setting:
Z1DISTANCE
(101) Z1PHASE = YES
(104) Z1GROUND = NO
(102) Z1PREACH = [_________] ohms,
V
NOM 1
= [_________] V,
I
T
= [_________] A,
øI
1
= [_________]°,
2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–12 for the appro-
priate phases under test.
3. Set the relay to test mode 30 (ANY ZONE 1 Phase). The LUI displays: ANY Z1 PHASE ON
4. Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠+120°.
5. Set the fault current,
I
op
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is 180° out of
phase with the line it is shorted to.
6. Set the fault current to I
T
= [________] amps rms. Simultaneously reduce the voltage of the faulted phases and check
that the A1 contact closes when the voltages are within 7% of
V
NOM
.
7. Reduce the fault current to zero.
8. Return Zone 1 ground Z1GROUND to your specific setting.
6.5.9 T17 – ZONE 2 PHASE REACH, MT FAULTS
1. Setting:
Z2DISTANCE
(201) Z2PHASE = YES
(204) Z2GROUND = NO
(202) Z2PHREACH = [_________] ohms,
V
NOM 2
= [_________] V,
I
T
= [_________] A,
øI
2
= [_________]°,
2. Connect the relay as shown in Figure 5–2: GROUND REACH TIMER TEST CONNECTIONS on page 5–7 for the
appropriate phases under test.
3. Set the relay to the Zone 2 Phase test mode for the appropriate phase under test. The LUI displays, for instance:
ZONE 2 AB 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
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is 180° out of
phase with the line it is shorted to.
6. Set the fault current to I
T
= [________] amps rms. Simultaneously reduce the voltages of the faulted phases, and
check that the A1 contact closes when the voltages are within 7% of
V
NOM
.
7. Reduce the current in the faulted phase to zero.
8. Return Zone 2 ground Z2GROUND to your specific setting.