... max power point tracking 3.Max efficiency 85% MOTOR DATAModel4SPS4/100-D72/1000Max flow4.0 M3/hMax head100mVoltage72VPower1000WPump diameter4”Outlet1.25 ... device, against under-voltage, over-voltage, over-flow, over-load, waterless, etc;automatically recovery;control water height;easy installation, maintenance ... powered solar submersible water pump system for agriculture (4SPS4/100-D72/1000)