question

rosimar-diaz avatar image
rosimar-diaz asked

AC coupling BYD Battery-box Pro13.8, with microinverter and 4 inverter Quattro 48/5000/70

Hi

We have a PV system with 4 inverter Quattro 48/500/70 and 2 battery-box Pro 13.8.

Righ now we are only going to expand the photovoltaic system to 10.9kW, but the AC- coupling manual indicates ""Each additional 1.5 kWp of AC PV will require an additional proportional 4.8 kWh increase in battery storage""

Example:

10.9kW (AC PV) / 1.5 kWp x 4.8kWh = 34.88kWh

but, I have 27.6kWh (Battery)

Can I expand the System without more batteries?

or I have to add more?


MultiPlus Quattro Inverter ChargerbatteryAC PV CouplingBYD
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1 Answer
Vangelis Beligiannis avatar image
Vangelis Beligiannis answered ·

Hi!

According to the Victron-Byd compatibilty link, you need 1 module for each Quattro 48/5000. It says you will avoid overcurrent issues this way. I think this is important to follow the guideline especially for an AC coupled system.

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