7 Acceptance/Protection Function Test Guide
D02706R02.30
L-PRO 4000 User Manual
7-39
51 Directional Test Procedure
1. In Relay Control Panel access relay
Metering>Protection
.
Monitor: 51 Pickup Alarm
2. Apply single-phase polarizing voltage to:
Ph A: 330
–
333, 66.4 V
0
3. Apply single-phase current at line angle to:
Ph A: 300
–
301, 2.0 A
-80
Observe 51 Pickup Alarm = High
4. Slowly ramp the current phase angle in negative direction (i.e. more lag):
At -165
to -175
(expect -170
):
51 Pickup Alarm = Low
5. Restore current to line angle (-80
):
Observe 51 Pickup Alarm = High
6. Slowly ramp the current phase angle in positive direction (i.e. less lag):
At +5
to +15
(10
):
51 Pickup Alarm = Low
7. Turn off voltage and current sources.
End of 50/51 test.
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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