UNE-EN 61000-2-2:2003/A1:2018

Replace the existing text of clause 1 by

This standard is concerned with conducted electromagnetic phenomena (disturbances and

signals from mains communicating systems) in the frequency range from 0 kHz to 150 kHz. It

gives compatibility levels for public low voltage a.c. distribution systems having a nominal

voltage up to 420 V, single-phase or 690 V, three-phase and a nominal frequency of 50 Hz or

60 Hz.

Compatibility levels are specified for conducted electromagnetic phenomena of the types

which can be expected in public low voltage power supply systems, for guidance in:

the limits to be set for conducted emissions into public power supply systems (including

the planning levels defined in 3.1.5).

the immunity limits to be set by product committees and others for the equipment exposed

to the conducted electromagnetic phenomena present in public power supply systems.

NOTE More information on compatibility levels and other main basic EMC concepts is given in IEC/TR 61000-1-1.

The compatibility levels specified in this standard apply at the point of common coupling. At

the power input terminals of equipment receiving its supply from the above systems, the

levels of the conducted electromagnetic disturbances can, for the most part, be taken to be

the same as the levels at the point of common coupling. In some situations this is not so,

particularly in the case of a long line dedicated to the supply of a particular installation, or in

the case of an electromagnetic phenomenon generated or amplified within the installation of

which the equipment forms a part.

The electromagnetic phenomena considered are:

voltage fluctuations and flicker;

harmonics up to and including order 40;

interharmonics up to the 40th harmonic;

voltage distortions in differential mode at higher frequencies (above the 40th harmonic up

to 150 kHz);

voltage dips and short supply interruptions;

voltage unbalance;

transient overvoltages;

power frequency variation;

d.c. components;

signals from mains communicating systems (MCS).

Most of these phenomena are described in IEC 61000-2-1. In cases where it is not yet

possible to establish compatibility levels, some information is provided in Annex B.