Harmonic Detection - GE Multilin 850 Instruction Manual

HARMONIC DETECTION

Harmonic Detection
Synchrocheck
6–10
The second, third, fourth, and fifth harmonics per phase are shown here. The harmonics
values are presented in percent relative to the fundamental magnitude.
Note that similar harmonic ratios and THD values are also displayed under the general
metering menus, "Harmonics 1 - J1 Current", "Harmonics 3 - K1 Current", or "Harmonics 4 –
K2 Current", where all values are calculated every three cycles. The THD values used in the
Harmonic Detection element are the same for the general metering, so they are not shown
here again. The harmonic ratios in the Harmonic Detection element are calculated and
updated every protection pass.
Path:
Metering > Harmonic Detection
Path:
Metering > Synchrocheck
If a Synchrocheck function setting is "Disabled," the corresponding metering display is not
displayed.
Bus Voltage Magnitude (Bus Volts Magnitude)
Range: 0.00 to 600000.00 V
Bus Voltage Angle (Bus Volts Angle)
Range: 0.0 to 359.9°
Bus Voltage Frequency (Bus Volts Frequency)
Range: 2.000 to 90.000 Hz
Line Voltage Magnitude (Line Volts Magnitude)
Range: 0.00 to 600000.00 V
Line Voltage Angle (Line Volts Angle)
Range: 0.0 to 359.9°
Line Voltage Frequency (Line Volts Frequency)
Range: 2.000 to 90.000 Hz
Voltage Difference (Volts Difference)
Range: 0.00 to 600000.00 V
Voltage Angle Difference (Angle Difference)
Range: 0.0 to 359.9°
Voltage Frequency Difference (Frequency Difference)
Range: 2.000 to 90.000 Hz
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: METERING