GE Power Management
LPS-D Line Protection System
6-
19
6 FUNCTIONAL TESTS (USER SETTINGS)
6.5 ZONE REACH TESTS
6
6.5.10 T18 – ZONE 3 PHASE REACH, M3 FAULTS
1.
Protection Settings:
Z3DISTANCE
(301)
Z3PHASE = YES
(304)
Z3GRND = NO
(302)
Z3PHREACH = [_________] ohms,
V
NOM
3
= [_________] V,
I
T
= [_________] A,
øI
3
= [_________]°,
2.
Connect the relay as shown in Figure 5--1 for the appropriate phase under test.
3.
Set the relay to the Zone 3 Phase test mode for the appropriate phase under test. The LUI displays, for
instance:
ZONE 3 AB ON
4.
Set the voltage inputs as follows: VA: 67 V rms
∠
0°, VB: 67 V rms
∠
–120°, VC: 67 V rms
∠
+120°.
5.
Set the fault current,
I
op
, phase angle to
øI
= [________]°, lagging. Note that the leading phase angle is
180° out of phase with the line to which it is shorted.
6.
Set the fault current to
I
T
= [________] amps rms. Simultaneously reduce the voltages of the faulted
phases, and check that the A1 contact closes when the voltages are within 7% of
V
NOM
.
7.
Reduce the fault current to zero.
8.
Return Zone 3 ground Z3GRND to your specific setting.
6.5.11 T19 – ZONE 4 PHASE REACH, M4 FAULTS
1.
Setting:
Z4DISTANCE
(401) Z4PHASE = YES
(405) Z4GRND = NO
(402) Z4PHREACH = [_________] ohms,
V
NOM
4
= [_________] V,
I
T
= [_________] A,
øI
4
= [_________]°,
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.
3.
Set the relay into the Zone 4 Phase test mode for the appropriate phase under test. The LUI displays, for
instance:
ZONE 4 AB ON
4.
Set the voltage inputs as follows: VA: 67 V rms
∠
0°, VB: 67 V rms
∠
–120°, VC: 67 V rms
∠
+120°.
5.
Set the fault current,
I
op
, phase angle to
øI
= [________], lagging. Note that the leading phase angle is
180° out of phase with the line it is shorted to.
6.
Set the fault current to
I
T
= [________] amps rms. Simultaneously reduce the voltages of the faulted
phases, and check that the A1 contact closes when the voltages are within 7% of
V
NOM
.
7.
Reduce the fault current to zero.
8.
Return Zone 4 ground Z4GRND to your specific setting.
Содержание LPS-D
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Страница 164: ...3 14 LPS D Line Protection System GE Power Management 3 3 PRINTED CIRCUIT BOARD MODULES 3 HARDWARE DESCRIPTION 3 ...
Страница 226: ...7 4 LPS D Line Protection System GE Power Management 7 1 RATINGS 7 SPECIFICATIONS 7 ...
Страница 284: ...10 20 LPS D Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
Страница 334: ...A 4 LPS D Line Protection System GE Power Management A 1 FREQUENTLY ASKED QUESTIONS APPENDIXA A ...
Страница 412: ...C 34 LPS D Line Protection System GE Power Management C 3 POINT LISTS APPENDIXC C ...
Страница 416: ...D 4 LPS D Line Protection System GE Power Management D 1 KEYPAD MENUS APPENDIXD D ...
Страница 422: ...F 2 LPS D Line Protection System GE Power Management F 1 WARRANTY INFORMATION APPENDIXF F ...
Страница 435: ...GE Power Management LPS D Line Protection System xiii INDEX INDEX tests 6 11 ZONE TIMER functional tests 5 10 ...
Страница 436: ...xiv LPS D Line Protection System GE Power Management INDEX INDEX ...