GE Power Management
ALPS Advanced Line Protection System
5-15
5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5.4 PHASE-TO-PHASE ZONE REACH TESTING
5
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
3.
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
op
, to the phase-angle value listed below. Note that the leading phase angle is 180° out of phase
with the line to which it is shorted (increase VA, VB, and VC to 75 V when
∠
I
op
= –55°)
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.
5.4.4 T19 – ZONE 4 PHASE REACH, M4 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
3.
Set the voltage inputs as follows: VA: 67 V rms
∠
0°, VB: 67 V rms
∠
–120°, VC: 67 V rms
∠
+120°.
∠
I DEGREES
VOLTS RMS
DISPLAYED TARGET
†
–25
56 to 63
–
–55
65 to 73
195 to 205
–85
56 to 63
–
†
Reference only
Содержание ALPS
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