The presence of harmonics in the voltage delivered to homes and businesses is pretty much a given due to the increase in non-linear loads in use today. These loads include such things as high-efficiency heat pumps, variable speed drives, electronic power supplies (for a variety of office equipment) and even CFL or LED lighting. While Total Harmonic Distortion (THD) is a useful tool in determining the overall harmonic level it does not give a detailed picture of which harmonics are present and to what degree. The harmonic bar charts available in Provision will show the harmonic content details of any captured waveforms. Since raw captured waveform data is used, the harmonic bar chart can show individual harmonic levels without having to record separate harmonic stripcharts in advance. The bar chart display is also an easy way to view all harmonics at once – essentially a 2D slice of the more complex 3D harmonic graph.
This white paper includes: