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svitek avatar image
svitek asked

Connecting Growatt to AC input Quatroo II

Hello, it seems I have a problem nobody before solved.

I have the victron solar panels with victron mppt, tesup wind turbine, victron batteries and hyundai diesel generator. All of this is connected together in Victron Quatroo II. Generator to AC input 1, wind turbine to AC input 2. The wind turbin has its own charger controler connected to Growatt invertor. Growatt is then connected to AC2 Quatro. The problem is that Growatt has an error "Not any AC connected" and it not produce any electricity even there is going more than 100V in it.

Do you think there is a problem with Growatt invertor (I already checked fuses etc.) or is a problem that these two invertors don't communicate together?

MultiPlus Quattro Inverter Charger
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2 Answers
Michelle Konzack avatar image
Michelle Konzack answered ·

The Growatt is a GTI which need an AC Voltage to work on. The AC2in ned to be powered by the source, hencevä it can not work with the Growatt

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Alexandra avatar image Alexandra ♦ commented ·
The AC out 2 of the inverter needs to be programmed to be on if there is no AC input. By default it is off.
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svitek avatar image svitek commented ·

Thank you for this response! I supposed the problem is in something like that. Would be the solution to put Growatt to AC1 in or to reprogram the input at Quatro as Alexandra suggests?

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Alexandra avatar image Alexandra ♦ svitek commented ·
@Svitek

If you have it on the AC out, the Victron will need a way to control it. If there is no communication between the Growatt and the GX and the inverter does not respond to frequency shifting commands, then the other way is to use it on AC2 output and run it like a generator. Switching on a lower SOC and switching off at higher one to prevent battery overcharge.

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svitek avatar image
svitek answered ·

Strange idea. What about to place wind turbine charge controlor to AC2 in directly? Not to use Growatt at all? Would be quatro be able to operate when there will come less than 220V to AC2in? Would be 50 - 100 V enough for quattro to produce 220V?

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