Fronius IG Plus vs Primo 11.1/11.4
quique
Solar Expert Posts: 256 ✭✭
I have installed Fronius IG Plus A 11.1 with 4 strings of solar panels connected to them, interfacing to a 240VN uniphase grid.
Im looking over the Fronius Primo 11.4 but Im unsure if should use it. The datasheet says it can either be used with 2 MPPTs or 1 MPPT. According to their tool, with 2 MPPTs I can get:
5 strings of 9 panels each on MPP1 and 3 strings of 9 on MPP2.
If I combine the MPPTs (which I guess is a jumper or some other setting on the inverter itself) I can get:
5 strings of 8 panels.
What would the advantage of the separate MPPT be? In case some strings are in a less than optimal location vs another set of strings?
Im looking over the Fronius Primo 11.4 but Im unsure if should use it. The datasheet says it can either be used with 2 MPPTs or 1 MPPT. According to their tool, with 2 MPPTs I can get:
5 strings of 9 panels each on MPP1 and 3 strings of 9 on MPP2.
If I combine the MPPTs (which I guess is a jumper or some other setting on the inverter itself) I can get:
5 strings of 8 panels.
What would the advantage of the separate MPPT be? In case some strings are in a less than optimal location vs another set of strings?
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Comments
Mostly, this voltage varies with number of cells/panels in a string (your physical design) and the cell temperatures.
This gives you the option to have different numbers of panels how many you can fit on s roof plane) and/or optimize the energy harvest with different roof plane (facing southeast vs southwest).
As always, read the specifications & manuals closely. There maybe limitations in array configurations that a single 2 input gt inverter beyond the basic Voc/Vmp limitations.
-Bill
|| Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
|| VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A
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