SP submersible pumps are often used in irrigation applications, and are the perfect choice in areas prone to flooding which would otherwise damage beyond repair dry-installed pumps. Deep-well submersible pumps are most often multi-stage pump types.
Besides generating a static pressure for the application, they have to generate an additional pressure in order to lift the water from the aquifer. This means pump inlet pressure can vary significantly. In addition to a correctly sized SP pump and motor, using a variable frequency drive (VFD) and adding monitoring to the system achieves energy efficient operation.This article focuses on how the correct use of a VFD can improve energy efficiency, help safeguard water resources, and ultimately save on costs.