GE LPS-D Instruction Manual page 220

6.5 ZONE REACH TESTS
1. Protection Settings:
Z1DISTANCE
(101) Z1PHASE = YES
(104) Z1GROUND = NO
Z1PREACH = [_________] Ω,
(102)
V = [_________] V,
NOM 1
I
= [_________] A,
T
øI = [_________]°.
1
2. Connect the relay as shown in Figure 4–3: PHASE TO GROUND TEST CONNECTIONS on page 4–14 for
the appropriate 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
180° out of phase with the line it is shorted to.
6. Set the fault current to I
and check that the A1 contact closes when the voltages are within 7% of V
7. Reduce the fault current to zero.
8. Return Zone 1 ground Z1GROUND to your specific setting.
6
1. Protection Settings:
Z2DISTANCE
(201) Z2PHASE = YES
(204) Z2GROUND = NO
(202) Z2PHREACH = [_________] ohms,
V
= [_________] V,
NOM 2
I = [_________] A,
T
øI = [_________]°,
2
2. Connect the relay as shown in Figure 5–2: GROUND REACH TIMER TEST CONNECTIONS on page 5–8
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
180° out of phase with the line it is shorted to.
6. Set the fault current to I
phases, and check that the A1 contact closes when the voltages are within 7% of V
7. Reduce the current in the faulted phase to zero.
8. Return Zone 2 ground Z2GROUND to your specific setting.
6-
18
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is
op
= [________] amps rms. Simultaneously reduce the voltage of the faulted phases
T
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is
op
= [________] amps rms. Simultaneously reduce the voltages of the faulted
T
LPS-D Line Protection System
6 FUNCTIONAL TESTS (USER SETTINGS)
6.5.8 T16 – ZONE 1 PHASE REACH, M1 FAULTS
.
NOM
6.5.9 T17 – ZONE 2 PHASE REACH, MT FAULTS
.
NOM
GE Power Management