5-
12
LPS-O Line Protection System
GE Power Management
5.3 PHASE-TO-PHASE ZONE REACH TESTING
5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5
6.
Reduce
I
op
of the faulted phase to zero. Note that the trip target indication concurs with the fault. For
example, an AB fault is displayed as follows:
TRIP AB Z2 "DIST"
where “DIST” is the displayed target.
7.
Repeat the test for phase BC and CA faults.
5.3.3 T13 – ZONE 3 PHASE REACH TEST
1.
Setting:
Z1DISTANCE
(101)
Z1PHASE = NO
Z2DISTANCE
(201)
Z2PHASE = NO
Z3DISTANCE
(301)
Z3PHASE = YES
(304)
Z3P_TIME = 2.0 sec.
Z4DISTANCE
(401)
Z4PHASE = NO
LINEINFO
(1204) TRSFMRTYPE = NONE
2.
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
3.
Set the voltage inputs to the following values:
VA: 67 volts rms
∠
0°,
VB: 67 volts rms
∠
–120°,
VC: 67 volts rms
∠
+120°.
4.
Set the fault current,
I
op
, to the phase-angle value listed in Table 5–4: FAULT CURRENT PHASE SET-
TINGS FOR T13. 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°)
Table 5–4: FAULT CURRENT PHASE SETTINGS FOR T13
I Degrees
Volts rms
Displayed Target
†
–25
56 to 63
–
–55
65 to 73
195 to 205
–85
56 to 63
–
†
Reference only
Summary of Contents for LPS-O
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Page 14: ...x LPS O Line Protection System GE Power Management TABLE OF CONTENTS ...
Page 208: ...9 8 LPS O Line Protection System GE Power Management 9 3 TROUBLESHOOTING 9 SERVICING 9 ...
Page 226: ...10 18 LPS O Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
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Page 294: ...D 2 LPS O Line Protection System GE Power Management D 1 WARRANTY INFORMATION APPENDIXD D ...
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