7 Acceptance/Protection Function Test Guide
D02706R02.30
L-PRO 4000 User Manual
7-31
68 Outer Right Test Procedure
1. In Relay Control Panel access relay
Metering>Logic>Protection
.
Monitor:
68 OutBlinder Alarm
Contact 12 with an ohmmeter
2. Apply balanced 3-phase nominal voltages (66.4 V) to the relay terminals.
Ph A: 330, 66.4 V
0
Ph B: 331, 66.4 V
-120
Ph C: 332, 66.4 V
+120
Ph N: 333
3. Connect 3-phase current sources (3.15 A in phase with voltages) to the relay
terminals: Ph A: 300
–
301, 3.15 A
0
Ph B: 302
–
303, 3.15 A
-120
Ph C: 303
–
304, 3.15 A
+120
Observe 68 OutBlinder Alarm = Low
Contact 12 = Open
4. Simultaneously increase (ramp up) 3-phase currents.
At 3.72 to 4.10 A (expect 3.91A):
68 OutBlinder Alarm = High
Contact 12 = Closed
End of 68 Outer test.
68 Inner Left Test Procedure
1. In Relay Control Panel access relay
Metering>Logic>Protection
.
Monitor:
68 InnBlinder Alarm.
Output Contact 13 with an ohmmeter.
2. Apply balanced 3-phase nominal voltages (66.4 V) to the relay terminals:
Ph A: 330, 66.4 V
0
Ph B: 331, 66.4 V
-120
Ph C: 332, 66.4 V
+120
Ph N: 333
where
I
Min
- Minimum Current
I
1Supervision
- Positive Sequence Supervision current setting
(32)
I
Min
=
I
1Supervision
x 105% = 3.0 x 1.05 = 3.15
A
Summary of Contents for L-PRO 4000
Page 1: ...L PRO 4000 Transmission Line Protection Relay User Manual Version 2 3 Rev 0...
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Page 252: ...Appendix B IED Settings and Ranges Appendix B 34 L PRO 4000 User Manual D02706R02 30...
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