IEC 61000-4-30:2008 defines conditions of flagging. If a voltage event occurs, the 10/12-cycle block in which the event occurs is flagged. If a given interval contains a flagged value, the aggregated value for that interval also is flagged, indicating that the aggregated value may be unreliable.

The LabVIEW Electrical Power Toolkit complies with IEC 61000-4-30:2008 and supports flagging for the following measurements:

  • Frequency.
  • Voltage magnitude.
  • Harmonics and interharmonics.
  • Flicker.
  • Unbalance.
  • Signaling.
  • Underdeviation and overdeviation.

If any of the previous measured values are flagged, the aggregated value that includes the measured values also is flagged.