16 BOREHOLE BOREHOLE PUMPS PUMPS 3" BOREHOLE PUMPS Borehole multistage centrifugal pumps for 3" wells with EXTERNAL INVERTER APPLICATIONS • Water plants and systems for residential and industrial use • Continuous or intermittent duty operation • Pressurizing system • Irrigation plants MATERIALS External jacket AISI 304 Impellers AISI 304 Pump shaft AISI 304 Discharge head AISI 304 Motor coupling AISI 304 TECHNICAL FEATURES Max. Head 190m Max. Flow 7m³/h Max. Liquid temperature 30°C Max. Permissible sand quantity 150g/m³ Discharge head 1” 1/4 Insulation class IP68 Poles 2 Protection degree F Voltage 230V (3ph) MOTOR Subgroup 120 Series 3" WPS-CP includes: • Hydraulic part • A WPS® high speed submersible motor able to run at variable frequencies up to 140Hz. • Constant pressure controller including a variable speed drive, a flow detection and a pressure sensor • A pressure vessel of 8 liters, a valve and a pressure gauge The WP 3”WPS-CP pump is fitted with a three phase 230V motor. The controller needs a single-phase supply and transforms it to a three-phase current to the motor. The controller is equipped with a frequency drive and performs a constant pressure of the flow through a variable speed of the pump. As a consequence, the pump can be set to operate in any duty point in the range between the pump min. and max. performance curves. In case of a pump fault, an alarm will be indicated on the LCD screen of the controller. with Inox Impellers
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