The photovoltaic water pump system is composed of a solar cell array, an inverter and a water pump, and the energy storage devices such as batteries are omitted in the system.SPC series water pump inverters have powerful protection functions, including anti-dry-burning, over-current, over-voltage, under-voltage, short-circuit, and locked-rotor protection.

Cost/efficiency ratio essentials

For a 2-wire pump without a control box, the solar water pump inverter should be oversized with an extra 50%. The efficiency of this pump can be affected negatively with a corrected sine-wave inverter. Water pumps mainly need 230VAC.

They can use 2 inverters stacked together or a single inverter. The most important thing is to realize an output of 230V. Otherwise, a transformer should be used instead.

There are cost implications while sizing inverters and when looking for the best choice to fit your application. Cost cutting can be avoided by selecting a low power-high efficiency pump based on watts/ gallon. A pressurizing pump drawing a DC current installed in an intermediary storage tank can also be useful.

It helps in relieving the water pump from starting on low pressure runs and the number of times it will need to do that in a day. Maximum output is achieved both for power and water pumping.

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