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Cansin Sari avatar image
Cansin Sari asked

Polarity protection for mobile multiplus

Hello everyone,

the manual states(Multiplus 48/3000), that the Phase from the Grid should be connected to the Phase-In from the Inverter. Due to the mobile usage of the Inverter, the Inverter shall be connected to the Grid with a Schuko plug https://upload.wikimedia.org/wikipedia/commons/thumb/2/23/Schuko_plug_and_socket_annotated.png/240px-Schuko_plug_and_socket_annotated.png. However the right plugging of the schuko plug is not always ensured, because you can plug the schuko plug in two ways (Not turned Phase to Phase, and turned Phase to Neutral). Does somebody know a device, that stops the current from follwing when the device is not connected properly?

Multiplus-IIoffgridshorepower
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Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

I don't know of any device that can do that but we installed the Multi in hundred or thausend mobile applications without any problems.

What you could do (or should) is using two pole MCB at the outputs of the Multi.

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Cansin Sari avatar image Cansin Sari commented ·

Hey Matthias,

kann man denn die Phase auf den Neutraleingang vom Wechselrichter legen? Wenn ja, kann man dann immernoch die Powershare Funktion benutzen, heißt Batterie und Netz gleichzeitig?

Danke dir im Voraus.

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ Cansin Sari commented ·

Wie gesagt, das installieren wir fast immer so und das Funktioniert auch ohne Probleme.
Dem Multi ist das erst mal egal, ist doch sowieso Wechselstrom.
Man muss halt nur aufpassen, das dann u.U. eben die blaue Ader spannungsführend ist.
Daher sollte man die Sicherungen am Ausgang des Multi 2polig ausführen.

Rechtlich gesehen ist das aber glaube ich eine Grauzone.
Einerseits soll es verpolungssicher sein, andererseits hat man gar nicht überall die entsprechenden CEE Dosen, so das man mit einem Adapter auf SchuKo arbeiten muss.

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seb71 avatar image
seb71 answered ·

Mark the plug to know which is L on your inverter cable.

Check the power outlet to see which is L before inserting the plug.

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