PowerLogic ION9000 series – User manual
7EN02-0390-04

Power quality

  1. Power quality overview
    Your meter measures voltage and current harmonics, and calculates several harmonic distortion values, including K-factor and crest factor.
  2. Power quality configuration
    Use ION Setup to configure sag/swell, transient and advanced power quality logging.
  3. Power quality logging
  4. Configuring Advanced PQ
    Use ION Setup to configure your meter’s power quality (PQ) monitoring and logging settings for IEC 61000-4-30, EN 50160, IEEE 519 and Rapid Voltage Change (RVC).
  5. Rapid Voltage Change overview
    Rapid Voltage Change (RVC) is a quick transition in RMS voltage between two steady-state conditions, during which the voltage does not exceed the sag/swell thresholds.
  6. Harmonics overview
    Harmonics are integer multiples of the fundamental frequency of the power system.
  7. Viewing harmonics information using the display
    You can view detailed harmonics data through the display.
  8. Voltage crest factor
    Crest factor is the ratio of peak to RMS voltage values.
  9. Current crest factor
    Crest factor is the ratio of peak to RMS current values.
  10. K-factor
    K-factor relates the heating effect of a distorted current in a transformer to a sinusoidal current with the same RMS magnitude — it describes a transformer’s ability to serve non-linear loads without exceeding rated temperature rise limits.
  11. Harmonic content calculations
    Harmonic content (HC) is equal to the RMS value of all the non-fundamental harmonic components in one phase of the power system.
  12. THD% calculations
    THD% is a quick measure of the total distortion present in a waveform and is the ratio of harmonic content (HC) to the fundamental harmonic (H1).
  13. thd and TDD
    Your meter can be configured to provide thd (total harmonic distortion using the total RMS value for the content rather than the fundamental content) and TDD (total demand distortion, the harmonic current distortion against the maximum demand of the electrical system).
  14. Phasors
    Phasors are used to represent the voltage and current magnitude and angles.
  15. Power quality standards compliance
    Your meter is compliant with the following power quality standards.
  16. Disturbance direction detection overview
    Your meter has disturbance direction detection capabilities to help you determine the location of a power system disturbance.
  17. COMTRADE
    Your meter can generate COMTRADE files and store them on the meter’s internal SFTP site.
  18. Waveforms on your meter’s webpages
    You can use the waveform viewer on the meter’s webpages to view waveforms generated as a result of power quality events.
  19. Burst data logging
    Burst data logging is a recording method that captures a snapshot of data that occurred immediately before and immediately after a triggered recording.
  20. Waveform capture
    The meter’s Waveform Recorder modules capture waveform data.
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