Category: PMI Products, Power Quality, Box Recorder, Harmonics/Interharmonics
IEEE 519-2014 specifies two time periods for analyzing harmonic data: “very short time”, or 3 seconds, and “short time” or 10 minutes. For achieving the best resolution, the 3 second interval should be used in a PQ recording, but without the 10 minute data, the IEEE 519 thresholds cannot be fully applied. A method is shown here to compute the 10 minute short time values from the recorded 3 second values, so both sets of readings are available from a single recording.
This white paper includes:
