1.3.7kw pump controller drive 3 phase AC pump 2.pump inverter used for irrigation 3.efficiency 98% 4. without battery ... , pasture animal husbandry, water supply for islands, wastewater treatment engineering, and so on. In recent years, with the promotion of ... energy resources, solar pumping systems are more and more used in municipal engineering, city centre squares, parks, tourist sites, resorts ...