Purpose and Features: The high-voltage submersible axial-flow pump is an upgraded version of the traditional split-unit unit. The electric motor driving the pump is a dry, fully enclosed, submersible three-phase asynchronous motor. The pump and motor are coaxially integrated, allowing for long-term submersible operation and possessing a range of advantages unmatched by traditional units. Because the pump and motor are integrated and submersible, the labor-intensive and time-consuming on-site assembly process of aligning the pump and motor axes is eliminated, making on-site installation convenient and rapid. The submersible operation of the electric pump significantly simplifies the pump station’s civil engineering structure, reduces the installation footprint, and saves 30% of the total construction cost of the pump station.