[Bildschirmfoto 2025-03-24 um 12.22.00] Hi Victron Community, I build boats with a Quattro 8000VA, a Cerbo GX and a 24V Batterie Bank with A BMV712 Shunt. When I take take from the Quattro more than 1000W on the AC side, on the Cerbo GX screen is written, that the DC side gets negative, like the…

Have you got a separate shunt measuring DC loads or only a battery shunt? Without a dedicated DC load shunt the system is calculating what it thinks is the difference for DC loads, so isn’t necessarily accurate. I can enable it on mine (zero DC loads) and it produces wonderful numbers that vary in…

To expand on Nick’s post, the DC Power box is a calculated value that shows the remainder of ‘unidentified’ power. In this case the BMV is reporting 765W, the load is 1049W, so the difference is just assumed by the system to be coming from the DC power somewhere. Sometimes this is accurate and use…

Thanks for the feedback. I have one Shunt on between the Batteries and the DC side, at this DC Side the Victron Quattro is connected. Wenn enabling in the Cerbo GX Settings “Has DC Settings” in the past everything was perfect. Now at my current setting, if the Inverter consumes 3000W and the DC co…

Are you sure you don’t have a stray connection that is bypassing your shunt?

Quattro 8000VA not showing power flow correctly

Q&A and troubleshooting

Offshore 24 March 2025 12:42 6

Yes I am sure.
It is a wrong setting, on no other Cerbo GX I have the setting “Position of AC Loads” this is new, I think this is the reason for the issue.

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Quattro 8000VA not showing power flow correctly

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