How to Choose a Solar Panel?
The power of the solar photovoltaic panel array is recommended to be 1.3 times or more than the power of the water pump.The voltage of the solar photovoltaic panel array needs to meet the voltage range of the water pump.
Example:
3 Inch Plastic Impeller Solar Submersible Pump
Model: 3DPC3.5-95-72-750
- Pump power: 750w
- Best input voltage: 90-120v
- Maximum open circuit voltage: 160v
Requirements for solar photovoltaic panel array: power ≥ 750w*1.3 (that is, power ≥ 975w)
- VMP voltage > 90v
- VOC voltage < 160v
Solar panel:
- power 330w
- VMP voltage 37.26v
- VOC voltage 45.64v
3 solar panels in series:
- power 330w*3=990w
- VMP voltage 37.26v*3=111.78v
- VOC voltage 45.64v*3=136.92v
In this case, the power and voltage requirements of the pump can be satisfied, so this solar photovoltaic panel array scheme is acceptable.