GE LPS-O Instruction Manual page 162

6.3 ZONE REACH TESTS
4. Set the voltage inputs to the following values:
VA: 67 volts rms ∠0°,
VB: 67 volts rms ∠–120°,
VC: 67 volts rms ∠+120°.
5. Set the fault current, I
180° out of phase with the line to which it is shorted.
6. Set the fault current to I
and verify that the A1 contact closes when the voltages are within 7% of V
7. Reduce I of the faulted phase to zero. Note that the trip target indication concurs with the fault. For
op
example, an AB fault is displayed as follows:
TRIP AB Z2 "DIST"
where "DIST" is the displayed target.
8. Repeat the test for phase BC and CA faults.
1. Setting:
Z1DISTANCE
(101) Z1PHASE = NO
Z2DISTANCE
(201) Z2PHASE = NO
Z3DISTANCE
6
(301) Z3PHASE = YES
Z3PHREACH = [________] Ω
(302)
(304) Z3P_TIME = 2.0 sec.
Z4DISTANCE
(401) Z4PHASE = NO
LINEINFO
(1204) TRSFMRTYPE = NONE
2. Record the following values:
V = [________] V
NOM 3
I
= [________] A
T
∠ I
= [________]°
3
3. Connect the relay as shown in Figure 5–1: PHASE-TO-PHASE TEST CONNECTIONS on page 5–7 for
the appropriate phase under test. Set the relay to test mode 16 (Any Zone 3 Phase). The LUI displays:
ANY Z3 PHASE ON
6-
12
, phase angle to ∠ I
= [________]° lagging. Note that the leading phase angle is
op 2
= [________] A rms. Simultaneously reduce the voltages of the faulted phases
T
LPS-O Line Protection System
6 FUNCTIONAL TESTS (USER SETTINGS)
.
NOM 2
6.3.6 T13 – ZONE 3 PHASE REACH TEST
GE Power Management