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tobyfw asked

Quattro refuses generator when charging with more than 1250W?

Setup: Quattro-II 48/5000/70-50/50 + 3 Pylontech US3000C + Hyundai HY8500LEK (one phase)

Dear community,

we are currently in a no-grid situation, where I need to charge my three Pylontech US3000C with a 8500W Hyundai generator HY8500LEK (Manual and specification: https://cdn.hornbach.de/data/shop/D04/001/780/492/386/204/10573553_Doc_01_DE_20220708111753.pdf)

Charging works, but only when DVCC "maximum charge current" is set to 25A (at ~50V: 1250W)

As I understand, with three US3000C, I should be able to charge with 3x25A = 75A. But when I set the maximum charge current to 30A or higher (on Cerbo GX), charging only works intermittently - 15 second charging, charging breaks off, inverting starts, then a while later, it tries again, same thing...

How to analyze this situation? The generator should support a higher charging rate. Our AC loads are only ~500W, so with 25A/50V charging, the total load to the max 8500W (one phase!) generator is only 1600-1800W.

Is it because the generators AC out is not clean enough for the Quattro II, when running at higher loads? I can provide statistics, if you tell me what is needed.

I am aware of the Victron Generator FAQ, but as we are currently in an emergency situation, I would prefer not to do any firmware changes, which could result in a complete shutdown. No ESS is set up.

Thank you







MultiPlus Quattro Inverter ChargerGeneratorPylontechDVCC
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1 Answer
Paul B avatar image
Paul B answered ·

try turning UPS mode off also try unticking power assist and last resort turn week AC on

2 |3000

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