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Inverter VS solar panel spec


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Good day everyone,hope that u are all well? 

I was wondering if anyone can help me with a solar configuration. 

I have 8 x Canadian 315w Solar panels wit the following specs. 

Vmpp 33.1v

Impp 9.52A

Voc 39.9v

And I have a 5kw inverter with the following specs. 

Mppr operating voltage 60v~115vdv

Max pv array open circuit voltage 145v

So the question is can I connect 2 strings in parallel with 4 panels in series in a string this will give me max 132.4v in the pv array but I'm not sure if the operating voltage will be within the limits of the inverter?

Thanks

 

Kind regards 

Screenshot_20200925_163931.jpg

Screenshot_20200925_163620.jpg

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22 hours ago, Hannes Bester said:

Voc 39.9v

That's at 25°C. At 0°C, it will be more like 42.7 V, or 128 V for 3S. Doable, but other owners have found that 2S works a lot better than 3S for lots of reasons. [ Edit: this advice is for 72-cell panels; these appear to be 60 cell (120 half-cells). ]

4S is totally out of the question. Since you have an even number of panels, 2S4P will work out best.

Edited by Coulomb
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7 hours ago, Hannes Bester said:

Thanks for the reply 2s4p was the original plan but then I thought the voltage will be to close to the minimum operating range of the inverter. But I'll have to stick with it. 

60-cell panels are indeed best 3S. 315 W must be right on the border between 60-cell and 72-cell panels at present for Canadian Solar.

It would be better then if you can afford the money and roof space to add one more panel and wire 3S3P.

 

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