Adding Victron Quattros to existing Solar PV queries

DIY
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Hi Powersquad

Yes make sure that phases shift is 120 degrees apart., as some systems i worked on here were 180 degree phase shift due the transformer wiring type.

SMAs need to be set up in micro grid mode of course, i have had some issues with SMA not doing this, they attend to over shoot on voltage when the batteries are full, going unstable.

In the end one of the SMA failed , so i removed the second SMA and replaced them with a DC coupled system using RS450/200, runs much more smoothly and controlled no over shoots etc.

They need to be setup as master and slave the Victrons inverters, MCCB will be OK for the battery protection. Are the batteries CAN bus controlled? One cerbo will control the whole system OK., You will need a victron smart meter the newer one is much faster and easy to setup VM-3P75CT

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Hi

Can do, i do have some other solar jobs to finish of, and one is 10 kW Victron single phase system with a 80kW Tesla battery bank to install, and rewire to a Fronius 8kW inverter as AC Coupled system to charge the batteries and export surplus power etc.

What gear do you have? I have no idea what your SWB is like or condition of it etc. As i have seen some shockers out there, which needs complete rewire to be able to fit in the extra CT and protection etc.

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