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GE Power Management
LPS-D Line Protection System
5-
9
5 FUNCTIONAL TESTS (FACTORY SETTINGS)
5.2 MEASURING UNIT TESTS
5
5.2.9 T9 – UNDERVOLTAGE TEST
1.
Connect the relay as shown in Figure 5–2: GROUND REACH TIMER TEST CONNECTIONS on page 5–8.
2.
Set the voltage inputs to the following values:
VA: 67 volts rms
∠
0°
VB: 67 volts rms
∠
–120°
VC: 67 volts rms
∠
+120°
3.
Set
I
op
to zero Amps.
4.
Set the relay into test mode 48 The LUI displays
UNDERVOLTAGE ON
5.
Set phase A voltage to 35 V and check that contact A1 closed. Set phase A voltage back to 67 V and
check that contact A1 opens. Repeat for phase B and C.
5.2.10 T10 – OVERVOLTAGE TEST
1.
Connect the relay as shown in Figure 5–2: GROUND REACH TIMER TEST CONNECTIONS on page 5–8.
2.
Protection settings:
VOLTAGE
(701)
RATEDVOLTS = 115 (V rms)
(702)
PHASEOVER = YES
(703)
PHOVPICKUP = 1.10 (pu Volts)
(704)
PHOVTMDLY = 0.5
3.
Set the relay into test mode 47. The LUI displays
OVERVOLTAGE ON
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
I
op
to zero Amps.
6.
Set phase A voltage to 74 V and check that contact A1 is closed. Set phase A voltage back to 67 V and
check that contact A1 opens. Repeat for phases B and C.
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 ...