Harmonic Current Testing

This test is to measure the level of harmonic currents injected into the public supply system.

harmonic

EN 61000-3-2 Electromagnetic Compatibility Part 3-2 Limits for harmonic current emissions

This standard is a Product Family Standard which gives emissions limits for harmonic currents from equipment having an input current up to and including 16 A per phase.

Within its scope the standard covers essential requirements as given in Annex 1 Article 1(a) of the EC Directive 2004/108/EC (Electromagnetic compatibility (EMC)) and essential requirements of Article 3.1(b) (emission only) of the EC Directive 1999/5/EC (Radio and telecommunications terminal equipment (RTTE)).

It specifies limits of harmonic components of the input current which may be produced by equipment tested under specified conditions.

It is applicable to electrical and electronic equipment having an input current up to and including 16 A per phase, and intended to be connected to the public low-voltage distribution systems.

The following categories of equipment do not have limits specified in the standard:

  • Equipment with a rated power of 75 W or less, other than lighting equipment
  • Professional equipment with a total rated power greater than 1 kW
  • Symmetrically controlled heating elements with a rated power less than or equal to 200 W
  • Independent dimmers for incandescent lamps with a rated power less than or equal to 1 kW