Table of Contents
Advertisement
6.5 ZONE REACH TESTS
1.
Setting:
Z1DISTANCE
(101)
Z1PHASE = YES
(104)
Z1GROUND = NO
(102)
Z1PREACH = [_________] ohms,
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 4–12 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
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
5.
phase with the line it is shorted to.
Set the fault current to I
6.
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.
1.
Setting:
Z2DISTANCE
(201) Z2PHASE = YES
(204) Z2GROUND = NO
6
(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 5–7 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
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
5.
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 current in the faulted phase to zero.
8.
Return Zone 2 ground Z2GROUND to your specific setting.
6-16
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is 180° out of
op
= [________] amps rms. Simultaneously reduce the voltage of the faulted phases and check
T
, phase angle to øI = [________]°, lagging. Note that the leading phase angle is 180° out of
op
= [________] amps rms. Simultaneously reduce the voltages of the faulted phases, and
T
ALPS Advanced 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
Advertisement
Table of Contents
