7EN72-0185-13

Power quality parameters

The power quality parameters considered in the 4-30 standard are:
  • Power frequency.

  • Magnitude of the supply voltage and current.

  • Flicker.

  • Supply voltage dips and swells.

  • Voltage interruptions.

  • Transient voltages.

  • Supply voltage and current unbalance.

  • Voltage and current harmonics.

  • Voltage and current interharmonics.

  • Mains signalling voltage on the supply voltage.

  • Rapid Voltage Change (RVC).

  • Underdeviation and overdeviation.

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