PQube User Manual 2.1
Page 46 of 113
is reported as TDD. If you choose percent of fundamental, then the total distortion for current is
reported as THD.
There are three ways to retrieve harmonics from your PQube:
PQube Meter Display
On the PQube Meter display, use the joystick to choose any individual harmonic. You will see the
voltage magnitude and angle for each individual phase (on three meter screens).
Snapshots
In your Setup.ini file, you can set your PQube to take full snapshots every 3, 6, or 24 hours. Each
snapshot includes full harmonic and interharmonic spectra. The data is available in GIF images,
CSV spreadsheets, and PQDIF format.
Harmonic Trends in CSV
In your Setup.ini file, you can set your PQube to trend harmonics every 10 or 15 minutes. Turn this
feature on to create a folder called “Trend Harmonic” in your daily recordings. Inside this folder,
you will find one CSV spreadsheet for each phase voltage. There are 193 columns in each CSV file:
the magnitude, angle, and interharmonic magnitude of 63 harmonics. Each row in the file
represents a particular time – the first column tells you the date and time for the row. (This
feature creates exclusively CSV files, not GIF or PQDIF.)
Harmonic of Interest
View harmonics in real time using the Harmonic of Interest. You can change the harmonic order
on the PQube display, Web Server, Email, or Modbus. Your Harmonic of Interest remains, even
after your PQube resets.
Web Server
Navigate to the Harmonic section under the Meters tab. Enter your desired harmonic (between 1
and 50) and click “Set Harmonic of Interest” to set your Harmonic of Interest.
Email
The email command is “Set Harmonic of Interest to #” (case sensitive). It must be preceded by the
word specified by the “Subject_Must_Begin_With” tag in your setup file. For example, if this word
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