1.3.7kw pump controller drive 3 phase AC pump 2.pump inverter used for irrigation 3.efficiency 98% 4. ... installation conditions, different types of pump such as centrifugal pump, axial flow pump, mixed-flow pump or deep-well pump can be ... functions (overload, over voltage, under voltage, over heat, reverse polarity, thunder, over flow and dry running). · ·The main circuit adopts intelligent power ...