Harmonic Trend Viewer

[Dave Loucks]

Starting with firmware version 13.3.5.7 on the PXM 4/6/8K Meters a new feature was added that offers the option to generate a harmonic capture .csv file (magnitudes only H1-H128) with matching waveform at every Load Profile interval. The capture is based on a 60 cycle waveform taken at the beginning of the Load Profile interval.

Since the data is stored in a comma separated variable file format, it is easy to open in Excel and view.  However since each row is a different time of a different harmonic, displaying this output file to show, for instance, the 3rd harmonic plotted over time would require sorting the data by harmonic number and then by time.

To simplify this work, we've created a spreadsheet that does this sorting for you.  As a bonus, a 3D and 2D time series graphs are included.

Check out my quick tutorial on how to use this program (or click on the video image below).