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MP-2 Humming Sound: Alternative NA-Protection?

Hi There,

I have a very loud cycling humming sound with my MP2-5000. This is because of the NA-Protection (frequency shift=. After switching the internal NA off, the MP is quiet.

After searching for an external NA Protection I found this Item from enphase iq-relay-1p-datenblatt (enphase.com)

It is originally designed to work with their micro inverters, but the technical specs look like that it might also work as NA protection for the MP2-5000. It has VDE-AR-N 4105:2018-11 and a maximum switching power of 4.8kVA.

Any thoughts about this?


(of course, I could grab a Ziehl Device, but it costs more than 5x of this enphase device!)

Multiplus-IIenphasena-schutz
2 |3000

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