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Ohmic losses


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Hi folks

Regarding to ohmic losses. I have system consists of 120Kwp (PV modules) and 100KW inverter power. The system consists of 18 PV strings , 18 PV modules per string.

I want to connect directly 18 strings on 10 MPPTs/20 Inputs , which means that I don't need combiner box in the system.

Now for ohmic losses , PVsyst define combiner box for the calculations and there is no option to skip it .

My question , how I can calculate the power loss if I have for example 18 PV strings connected directly to the Inverter MPPTs inputs without combiner box in PVsyst ? ?


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