As long as you have provided the following information.we could design an optimal system for you!

1.lift rate(in meter)
2.total pump volume in one day(m3/day)
3.effective average sun insolation(kwh/m2*day)
4. water temperature(centigrade degree)

Main parameters of the solar DC water pumps

*PS600 working votage DC48V-72V MAX open circuit voltage: 150V, solar panel   configuration:300-900W, lift rate: 0-180meters
*PS1200 working votage DC72V-96V MAX open circuit voltage: 200V, solar panel   configuration:480-1200W,lift rate: 0-240meters.
*PS1800 working votage DC72V-96V MAX open circuit voltage: 200V, solar panel   configuration:800-2500W,lift rate: 0-50meters