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5 FUNCTIONAL TESTS (FACTORY SETTINGS)
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
to zero Amps.
op
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.
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
to zero Amps.
op
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.
GE Power Management
LPS-D Line Protection System
5.2 MEASURING UNIT TESTS
5.2.9 T9 – UNDERVOLTAGE TEST
5.2.10 T10 – OVERVOLTAGE TEST
5
5-
9
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