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Bruce Orr avatar image
Bruce Orr asked

Parallel Victron Controllers

I have 3 arrays of 12 solar panels each. Each array could produce (12x435watts) 5220 watts theoretically. Each of the 3 arrays are connected to a Victron 250/100 solar controller and subsequently to the Lynx Distributor. My 48 volt system is composed of a total of (8) 206Ah SOK batteries which are connected as follows: 2 sets of 4 batteries (which are connected in series) are in parallel. Also on the Lynx Distributor (with 2 very large 300MCM cables) is a 15kW inverter. My 3 Controllers and BMV-712 are connected by VE Smart Network. At this point, I have connected the first array and all is well.

Here is my question: my batteries can be charged at max current 50amps. Since I have 2 sets in parallel, I assume I can charge at 100 amps. However when I add the other 2 controllers 100amps each, I will be at 300 amps which may be OK for my 15kw inverter but too much for my battery bank maximum charging rate.

When I add the other 2 arrays will the controllers that are networked limit the output to a combined 100 amps?

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charge current limit
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1 Answer
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

With a GX device and DVCC you can limit the charging current but it will be always limited to that current.

If you had a Victron inverter (Quattro 48/15000) the system could increase the current from the MPPTs if loads are on the inverter.

https://www.victronenergy.com/panel-systems-remote-monitoring

https://www.victronenergy.com/media/pg/Cerbo_GX/en/dvcc---distributed-voltage-and-current-control.html

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