Fast Underfrequency - GE Multilin 850 Instruction Manual

CHAPTER 6: METERING

Fast Underfrequency

Harmonics 1(Harmonics 2)
NOTE:
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
The frequency and rate of change monitored in the Fast Underfrequency element are
displayed here only if the element is enabled.
Path:
Metering > Fast Underfrequency
The number of Harmonics supported is order code dependent.
All values relate to phase currents measured on the input card J1.
Path:
Metering > Harmonics 1 - J1 Current
Phase A Total Harmonic Distortion (Phase A THD)
Range: 0.0 to 100.0 %
Phase B Total Harmonic Distortion (Phase B THD)
Range: 0.0 to 100.0 %
Phase C Total Harmonic Distortion (Phase C THD)
Range: 0.0 to 100.0 %
Phase A Second Harmonic (Phase A 2)
Range: 0.0 to 100.0 %
Phase B Second Harmonic (Phase B 2)
Range: 0.0 to 100.0 %
Phase C Second Harmonic (Phase C 2)
Range: 0.0 to 100.0 %
Phase A Third Harmonic (Phase A 3)
Range: 0.0 to 100.0 %
Phase B Third Harmonic (Phase B 3)
Range: 0.0 to 100.0 %
Phase C Third Harmonic (Phase C 3)
Range: 0.0 to 100.0 %
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-
-
Phase A Twenty Fifth Harmonic (Phase A 25)
Range: 0.0 to 100.0 %
Phase B Twenty Fifth Harmonic (Phase B 25)
Range: 0.0 to 100.0 %
Phase C Twenty Fifth Harmonic (Phase C 25)
Range: 0.0 to 100.0 %
FAST UNDERFREQUENCY
6–9