This video provides a short technical introduction to current harmonics, why they are important, and how they are measured.
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Timeline:
00:00 Introduction
00:13 Suggested viewing
00:28 About voltage and current
01:06 About linear loads
01:53 About non-linear loads
03:02 Review - harmonics
03:46 Harmonics and non-linear loads
04:24 Negative effects of harmonics / distortion
05:57 About harmonics measurement standards
06:53 Example: IEC / EN 61000-3-2
07:54 Measuring current harmonics
09:09 Odd order and triplen harmonics
10:21 Total harmonic distortion (THD)
11:05 Instruments for measuring current harmonics
11:21 Measuring current harmonics with power analyzers
12:12 Measuring current harmonics with oscilloscopes
12:52 Summary