GE LPS-O Instruction Manual page 165

6 FUNCTIONAL TESTS (USER SETTINGS)
1. Protection Settings:
Z1DISTANCE
(101) Z1PHASE= YES
Z1PREACH = [________] Ω
(102)
(104) Z1P_TIME = 0.0 sec.
Z2DISTANCE
(201) Z2PHASE = NO
Z3DISTANCE
(301) Z3PHASE = NO
Z4DISTANCE
(401) Z4PHASE = NO
LINEINFO
(1204) TRSFMRTYPE = YD1
2. Connect the relay as shown in Figure 5–2: THREE PHASE TEST CONNECTIONS. Set the relay to test
mode 14 (Any Zone 1 Phase). The LUI displays:
ANY Z1 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. Select a value for V
NOM
5. For a three phase fault, we have the following equation:
V
V
NOM
I
= --- - = -------------- -
Z Z
R
6. Set the current inputs to the following values:
V
NOM
IA: [________] Amps rms
-------------- - =
Z
R
V
NOM
IB: = [________] Amps rms
-------------- -
Z
R
V
NOM
IC: = [________] Amps rms
-------------- -
Z
R
7. Reduce the voltage of all three phases simultaneously to V
closes.
8. If desired, repeat the test for Zone 2, 3, or 4 by setting the specific zone reach and disabling the zone ele-
ments not being tested.
GE Power Management
6.4.2 T15 – 3 PHASE FAULT WITH TRANSFORMER COMPENSATION
between 30 and 50 V rms: V
(eq. 6–8)
∠
79.6°
–
∠
160.4°
∠
40.4°
LPS-O Line Protection System
6.4 BACKUP PROTECTION TESTS
= [________] V rms
NOM
V rms and check that the A1 contact
NOM
6
6-
15