System Configurations

System Configurations

 

Input Voltage for the charge controller 

The maximum open-circuit voltage of the solar array is 55 V with a maximum short circuit current of 20A. The charge controller supports a 12v/ 24v battery system, and we recommend the following configurations. 

 

Solar Modules

 

12V battery systems can use 36 cell solar PV modules (open-circuit voltage of 44-46V, the voltage at max power point 36V) with as many wired in parallel to provide a maximum solar current of 20A.

 

For 24V battery systems, we recommend using 60 cell panels, known as grid-tie standard (Voc ~=38V, Vmpp=31V) - again with as many connected in parallel to achieve the desired solar power, up to 20A.

 

Solar panels with 72 cells are also supported Voc=44-46V, Vmpp=36V) but recommended only for 24V systems. Note that using 60 cell or 72 cell panels with 12V systems is supported and safe but will be inefficient.

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