IEC 61000-3-2
IEC 61000-3-2 ''Electromagnetic compatibility (EMC) – Part 3-2: Limits – Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)'' is an international standard that limits mains voltage distortion by prescribing the maximum value for harmonic currents from the second harmonic up to and including the 40th harmonic current. IEC 61000-3-2 applies to equipment with a rated current up to 16 A – for equipment above 16 A see IEC 61000-3-12. Meanwhile, the 5th edition of IEC 61000-3-2:2018 has been published.https://webstore.iec.ch/publication/28164 IEC webstore IEC 61000-3-2 versions validity The analog European standard is called EN 61000-3-2. Although the limit values shown below were taken from a previous edition (IEC 61000-3-2:2005+A1:2008+A2:2009), which is obsolete, they give a good impression of how electrical equipment is tested with the aim to reduce mains pollution, reduce transmission loss and mains voltage waveform distortio ...
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Harmonics (electrical Power)
In an electric power system, a harmonic of a voltage or current waveform is a sinusoidal wave whose frequency is an integer multiple of the fundamental frequency. Harmonic frequencies are produced by the action of non-linear loads such as rectifiers, discharge lighting, or saturated electric machines. They are a frequent cause of power quality problems and can resu