What is the Module Open Circuit Voltage (VOC)?
This is the open circuit voltage of the panel when it is exposed to sunlight. A PV panel will produce electricity from the sun because of the photoelectric effect which converts the sun’s energy into electricity. The open circuit condition is applied to the inverter when the panels are exposed to any sunlight, even indirect, and the inverter is not producing power. This value is highly dependent on the temperature of the panel, and like nominal power decreases with increased temperature. (Taken from SMA-America ’07.
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- What is the Module Open Circuit Voltage (VOC)?