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GE Power Management
LPS-D Line Protection System
5-
17
5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5.4 PHASE-TO-PHASE ZONE REACH TESTING
5
5.4 PHASE-TO-PHASE ZONE REACH TESTING
5.4.1 T16 – ZONE 1 PHASE REACH, M1 FAULTS
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
op
to the phase-angle value listed in the table below. Note that the
leading phase angle is 180° out of phase with the line to which it is shorted.
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.
∠
I Degrees
Volts rms
Displayed Target
†
–25
51 to 57
–
–55
59 to 66
82 to 88
–85
51 to 57
–
†
Reference only
Summary of Contents for LPS-D
Page 2: ......
Page 4: ......
Page 226: ...7 4 LPS D Line Protection System GE Power Management 7 1 RATINGS 7 SPECIFICATIONS 7 ...
Page 284: ...10 20 LPS D Line Protection System GE Power Management 10 8 HELP MENU 10 ALPS TEST PROGRAM 10 ...
Page 412: ...C 34 LPS D Line Protection System GE Power Management C 3 POINT LISTS APPENDIXC C ...
Page 416: ...D 4 LPS D Line Protection System GE Power Management D 1 KEYPAD MENUS APPENDIXD D ...
Page 422: ...F 2 LPS D Line Protection System GE Power Management F 1 WARRANTY INFORMATION APPENDIXF F ...
Page 436: ...xiv LPS D Line Protection System GE Power Management INDEX INDEX ...