On September 19, the NEC EMC met again at the NEN in Delft. During this consultation, all standards and other relevant documents were reviewed. I have only summarized the most important points in this newsletter, because a lot is discussed in a meeting of more than 6 hours.

An important standard that is currently being updated is the generic EMC standard IEC 61000-6-3: 'Emission standard for equipment in residential environments'. There is currently discussion about adding the following new topics:

  • Radiated emission measurements in the frequency range from 9 kHz to 30 MHz. During the discussion on this topic, it was discussed how the measurement should be carried out and which emission limits should be applied.
  • Highest frequency to be measured. Developments are also taking place at the top of the frequency range. By integrating radio modules into certain equipment, measurements are also required well above the transmission frequency used. The discussion surrounding this proposal focused on the question of whether this should be approached from the EMC directive (IEC / EN standards) or from the Radio Equipment directive (ETSI / EN standards).
  • Finally, a proposal has been made regarding the inclusion of requirements for transmitted emissions and for equipment connected to public DC networks. Once again the question is what the correct limits are for decent networks.

Another document that is almost finished is IEC TR 61000-2-15- Part 2-15: 'Description of the characteristics of networks with high penetration of power electronics equipment'. This paper focuses on: resonances in the LV network, the impact of an increased number of power electronic converters, supra harmonics & measurement methods and instability issues for the equipment to be connected to the LV networks.

The last standard I would like to mention here is IEC 61000-5-6: 'Installation and mitigation guidelines – Mitigation of external EM influences'. This document has also been completely updated and although this used to be a technical report, a kind of advice, they now want to make it an official standard, which means that, if this standard is included in the contract, all requirements must be adhered to. Within NEC EMC we wonder whether that is a wise choice.

If you have become interested in standardization as a result of the above article, please register for the NEC–EMC shadow committee of the association. For a small fee:

  • You get access to the standards that are being processed.
  • Can you submit comments on that?
  • Through the vote we have as an association, you can help decide which standards are approved or rejected.

If you want to be even more actively involved and have personal voting rights, you can of course also register directly with the NEN for membership of NEC-EMC.

Jan-Kees van der Ven

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