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5 FUNCTIONAL TESTS (FACTORY SETTINGS)
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. Set the relay to test mode 32 (Any Zone 3 Phase). The LUI displays: ANY Z3 PHASE ON
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠+120°.
3.
4.
Set the fault current, I
, to the phase-angle value listed below. Note that the leading phase angle is 180° out of phase
op
with the line to which it is shorted (increase VA, VB, and VC to 75 V when ∠ I
∠I DEGREES
VOLTS RMS
–25
56 to 63
–55
65 to 73
–85
56 to 63
†
Reference only
5.
Set the fault current to 5.0 (1.0) amperes rms. Simultaneously reduce the voltages of the faulted phases and check
that the A1 contact closes when the voltages are within the limits shown in the table above.
6.
Reduce the fault current to zero. Note that the trip target indication concurs with the fault. For example, an AB fault is
displayed as: TRIP: AB Z3 "DIST", where "DIST" is the displayed target.
7.
Repeat the test for phase BC and CA faults.
1.
Protection Settings:
Z1DISTANCE
(101)
Z1PHASE = NO
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = NO
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GRND = NO
Z4DISTANCE
(401)
Z4PHASE = YES
(405)
Z4GRND = NO
(410)
Z4P_TIME = 0.1
(411)
Z4G_TIME = 0.1
OVERCURRNT
(601)
50 = NO
(605)
50G = NO
(610)
51G = NO
OS BLOCKING
(1603)
BLOCKWHAT = 3 (BLKNONE)
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. Set the relay to test mode 33 (Any Zone 4 Phase). The LUI displays: ANY Z4 PHASE ON
Set the voltage inputs as follows: VA: 67 V rms ∠0°, VB: 67 V rms ∠–120°, VC: 67 V rms ∠+120°.
3.
GE Power Management
DISPLAYED TARGET
–
195 to 205
–
ALPS Advanced Line Protection System
5.4 PHASE-TO-PHASE ZONE REACH TESTING
= –55°)
op
†
5.4.4 T19 – ZONE 4 PHASE REACH, M4 FAULTS
5
5-15
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