GE 850 - Fast Underfrequency; Harmonics 1(Harmonics 2)

CHAPTER 11: METERING FAST UNDERFREQUENCY
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 11–9
Frequency (Phase Voltage Input LEA1)
Range: 2.000 to 90.000 Hz
Frequency Rate of Change (Phase Voltage Input LEA1)
Range: -20.00 to 20.00 Hz/s
Frequency (Phase Voltage Input LEA2)
Range: 2.000 to 90.000 Hz
Frequency Rate of Change (Phase Voltage Input LEA2)
Range: -20.00 to 20.00 Hz/s
Fast Underfrequency
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
Fast Frequency
Range: 20.000 to 70.000 Hx in steps of 0.01
Fast Rate of Change
Range: -120.00 to 120.00 Hz/s in steps of 0.01
Harmonics 1(Harmonics 2)
NOTE
NOTE:
The number of Harmonics supported is order code dependent.
All values relate to phase currents measured on the input cards (J1, etc.).
Path: Metering > Harmonics 1 - J1
Phase A/B/C Total Harmonic Distortion (Phase A/B/C THD)
Range: 0.0 to 100.0 %
Phase A/B/C Second Harmonic (Phase A/B/C 2)
Range: 0.0 to 100.0 %
Phase A/B/C Third Harmonic (Phase A/B/C 3)
Range: 0.0 to 100.0 %
-
-
-
Phase A/B/C Twenty Fifth Harmonic (Phase A/B/C 25)
Range: 0.0 to 100.0 %