The purpose of this article is to review the Fluke-1770 Series and Energy Analyze Plus Software Harmonic data related to reviewing 10 minute and 3 second time resolution.
In the setup of the Fluke-1770 Series the default interval time for Harmonics is 10 minutes but you can also choose the additional 3 second time interval.
Below are some screen shots of the Fluke-1770 Series on how to add the 3 second time interval for Harmonic measurements.
On the Home screen tap on the PQ Logger choice.
Next tap on the Session Setting and the tap on the Harmonics: 10 min.
Next tap on the Store 3 s Harmonics to put a check mark in the box and then tap on Done.
Below are some examples of reviewing a file from the Fluke-1770 Series.
The Energy Analyze Plus Software has five tabs at the top of the window.
The tabs consist of Project Manager, Energy Study, PQ+ Study, Advanced and Report.
We are going to investigate the PQ+ Study tab to review either the 10-minute resolution Harmonic data or 3 second resolution Harmonic data.
The screen below is showing the 10-minute resolution data in the form of a bar graph for the Fundamental percentage, THD through the 50th Harmonic.
See red boxes around the PQ+ Study tab, %Fundamental, Voltage and Voltage % of Fundamental [%]. The THD results are around 1% of the fundamental.
If you click on the blue box with a + symbol it opens a graph feature showing the 10-minute samples over time.
In order to see the 3 second Harmonic data the Fluke-1770 tool needs to be programmed to add that feature in the Setup.
Below is a screen shot of the Project Manager showing if the technician selected the 3 second Harmonic feature.
Below is a screen shot of the 3 second bar graph data. On the right-hand side of the window, you click on the drop-down arrow to select the Voltage 3s.