Designing a 3-phase BESS with 15 Victron Quattros (left side of diagram).
To make the current handling more manageable, and to add redundancy, we'd like to split the system into five BESSs (right side of diagram). If so required, a single BESS can go off line and later come back on line.
Is this possible? Either with 5 independent BESS (where one operates as off grid and the other four as grid interactive) or with one Quattro being the leader and the other 14 being followers.
What you are asking cant be done,
first off all all the inverters have to run off one LARGE battery BANK.
second each phase is programmed to have 5 units in parallel and then each phase HAS to have 5 units in each phase all the time. totaling 15 units.
third if you could connect all 5 units per phase then thats a 75,000 VA per phase and that means at max overload ( being 100% though not for long))at 52 volts the amp draw per phase could reach 1442 amps so with 3 phase all running amps drawn from the bank could be as high 4300 amps if all phases are loaded at the same time , very big fuses and bus bars and batteries required.
also I do not think that its advisable to go over 3 quattro 15000 in parallel, in these larger units so max size would be 9 x 15000 units (3 in each Phase)
I would suggest that you have more discussions with a authorized Victron Distributor in your area.
Also are the PV panels going to be DC connected IE direct to the batteries or AC connected being connected to ac1 out.
> Also are the PV panels going to be DC connected IE direct to the batteries or AC connected being connected to ac1 out
This is a DC-coupled solar system.
