I have a customer which feed up with the Grid provider Elektrilevi in Estonia, because he has regularly power cuts which has cost his enterprise already a very huge sum when the puwer cut happen, while the machines are in production.
We are planning to solv this problem since last year and consider installing:
1) MultiPlus/Quattro inverter
2) 8 SOPzS Battery sets 48V/4350Ah
3) Cerbo GX
4) Battery Balancer
5) 6 RS 450/200
6) Fronius Symo with at least 60kWp
The problem is now, that the MultiPlus-II 48/15000 can work in 3-phase and feed-in, but not parallel
The Quattro allow 3-phase AND parallel, which would give 144kW/180kVA, BUT it can not feed in.
The idea was to AC couple the Fronius that the batteries are charged even if the Grid fail. Hence with the Quattro I am stuck on AC in coupled system plus a 500A energy meter.
I also stuck currently in the Victron Training videos.
Any hints ideas and such?
Thankyou
Michelle