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PostPosted: Sat May 05, 2018 1:27 pm 

Joined: Sat May 05, 2018 1:01 pm
Posts: 1
Hello,
According to PVsyst's model, the highest value of PV module's open circuit voltage is at -10 C. When I choose temperature for example -20 C this voltage is lover than at -10C. According to the inverters manufacturers design tools (SMA or ABB) this voltage continues to rise with the lower temperature.
I design PV systems in Ukraine, where winter temperature can drop to -20 C.
I'm confusing. Which data I need to use when defining the number of modules in string?


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