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Important! The Working Voltage must be within the Apollo’s range of 120–500V.
The following tables provide reference calculations to demonstrate the behavior
of wattage, voltage, and amperage with solar panels in a series array.
The calculations are based on the voltage and wattage of the solar panel
specifications of; 410W/37.1V (Table 5.7) and 200W/20.4V (Table 5.8).
The number of panels (i.e. 4–10, 7–20) multiply to produce the total voltage and
power of the solar array. The total Open Circuit Voltage (Voc) and Short Circuit
Current (Isc) must be within the unit’s operating range between 120-500V and
<=18A, respectively.
Solar Panel
Specifications
(For reference)
PV Array
Open
Circuit
Voltage
Working
Voltage
Working
Current
Total
Power
• Pmax: 410W
• Vmp: 30.6V
• Imp: 13.4A
• Voc: 37.1V
• Isc: 13.9A
4 panels in series
x 1 string
149.0V 122.0V 13.4A 1630W
5 panels in series
x 1 string
186.0V 153.0V 13.4A 2050W
6 panels in series
x 1 string
223.0V 184.0V 13.4A 2470W
7 panels in series
x 1 string
260.0V 214.0V 13.4A 2870W
8 panels in series
x 1 string
297.0V 245.0V 13.4A 3280W
9 panels in series
x 1 string
334.0V 275.0V 13.4A 3690W
10 panels in series
x 1 string
371.0V 306.0V 13.4A 4100W
11 panels in series
x 1 string
409.0V 337.0V 13.4A 4520W
12 panels in series
x 1 string
446.0V 367.0V 13.4A 4920W
Table 5.7 Example calculations based on 410W/37.1V
Note: The working current stays the same with each series array. Although the
maximum total power is 4400W, you may safely “over-panel” the array up to
450V or approximately 4900W with 410W panels.
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