UNI-550-S/UNI-550A1-S series solar inverter special for PV water pump adopts the high accuracy fast MPPT algorithms , tracking the PV array output by the maximum power point,driving the pump motor as much as possible in meet various pumping appllications.The solar inverter special for PV water pump can support AC input besides support PV array DC input when the PV array can not drive the motor or does not have output, it can also accept the grid DC input or other AC motor to supply the power to meet various emergency needs. UNI-550-S/UNI-550A1-S series solar inverter special for PV water pump provides full protection,maximizing the life of motor and pump.