1 Scope
This part of IEC 61000
, which is a technical report, reviews the sources and effects of power frequency
conducted harmonic current emissions in the frequency range up to 2 kHz on the public
electricity supply, and gives an account of the reasoning and calculations leading
to the existing emission limits for equipment in the editions of IEC 61000‑3‑2[1]1, up to and including the fifth edition (2018) with Amendment 1 (2020), and in the second edition of IEC 61000‑3‑12 (2011)[2].
The history is traced from the first supra-national standard on low-frequency conducted
emissions into the public electricity supply, EN 50006:1975[3] and its evolution through IEC (60)555‑2[4] to IEC 61000‑3‑2[1], IEC TR 61000‑3‑4[5] and IEC 61000‑3‑12[2]. To give a full picture of the history, that of the standard for the measuring instrument
IEC 61000‑4‑7[6] is mentioned as well.
NOTE All IEC standards were renumbered starting from 60000 from 1998-01-01. To indicate the references of standards withdrawn before, or not reprinted after, that date, the “60x” prefix is here enclosed in parentheses. Hence “IEC (60)555‑2”.
Some concepts in this document apply to all low voltage AC systems, but the numerical
values apply specifically to the European 230 V/400 V 50 Hz system.