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5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5.4 PHASE-TO-PHASE ZONE REACH TESTING
1. Protection Settings:
Z1DISTANCE
(101)
Z1PHASE = YES
(104)
Z1GROUND = NO
Z2DISTANCE
(201)
Z2PHASE = NO
(204)
Z2GROUND = NO
Z3DISTANCE
(301)
Z3PHASE = NO
(304)
Z3GRND = NO
Z4DISTANCE
(401)
Z4PHASE = NO
(405)
Z4GRND = NO
OVERCUR
(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 5–7 for
the appropriate phases under test. Set the relay to test mode 30 (Any Zone 1 Phase). The LUI displays:
ANY Z1 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 phase angle of the fault current I
leading phase angle is 180° out of phase with the line to which it is shorted.
∠I Degrees
–25
–55
–85
†
Reference only
5. Set the fault current to 10.0 (2.0) amps rms. Reduce the voltage of the faulted phases and check that the
A1 contact closes when the voltages are within the limits shown 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 follows:
TRIP AB Z1 "DIST"
where "DIST" is the displayed target.
7. Repeat the test for phase BC and CA faults.
GE Power Management
to the phase-angle value listed in the table below. Note that the
op
Volts rms
Displayed Target
51 to 57
59 to 66
82 to 88
51 to 57
LPS-D Line Protection System
5.4 PHASE-TO-PHASE ZONE REACH TESTING
5.4.1 T16 – ZONE 1 PHASE REACH, M1 FAULTS
†
–
–
5
5-
17
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