Wilo-Sub TWI 8.80

About this Product

Application · For water and potable water supply from boreholes and rainwater · storage · Process water supply · For municipal water supply, sprinkling and irrigation · Pressure boosting · Lowering the water level · For pumping water in industrial applications · For pumping water without long-fibre and abrasive constituents Special features/product benefits · Simple maintenance due to rapid installation and dismantling · Integrated non-return valve · Vertical and horizontal (stage-dependent) installation possible · Standard and configurable versions available · Star-delta starting · Motor with rewindable stator Technical data · Mains connection: 3~400 V, 50 Hz · Immersed operating mode: S1 · Fluid temperature: - Motors with hermetically cast stator: 3-30 °C - Motors with rewindable stator: 3-30 °C (depending on type) · Minimum motor flow: 0.1-0.5 m/s (depending on type) · Max. sand content: 50 g/m3 · Max. number of starts: 10/h · Max. submersion depth: - 6" motors with rewindable stator: 100 m - 6" motors with hermetically cast stator: 300 m - 8" motors with rewindable stator: 300 m · Protection class: IP 68 · Pressure port: Rp 5 Equipment/function · Multistage submersible-motor pump with semi-axial impellers · Integrated non-return valve · NEMA coupling · Three-phase AC motor · Motor with hermetically cast stator (NU 5..., NU 7...) · Motor with rewindable stator (NU 6..., NU 8... and SD-R motor) Materials · Hydraulic housing: 1.4301 stainless steel · Impellers: 1.4301 stainless steel · Hydraulics shaft: 1.4057 stainless steel · Motor housing: EN-GJL stainless steel · Motor shaft: 1.4305 stainless steel Description/design Submersible-motor pump for vertical or horizontal installation. Hydraulics Multistage submersible-motor pump with 6" or 8" NEMA connection and semi-axial impellers with sectional construction. Integrated non- return valve. All parts in contact with the fluid are made of corrosion- free materials. Motor Corrosion-free three-phase AC motor for direct or star-delta starting. Sealed, hermetically cast stator, resin-impregnated, with enamel-insulated winding or rewindable stator with PVC-insulated winding, self-lubricating bearing, with water-glycol filling. Cooling The motor is cooled by the fluid. The motor must always be immersed when operated. The limit values for maximum fluid temperature and minimum flow velocity must be adhered to. Vertical installation is possible with or without cooling jacket. Cooling jacket is required for horizontal installation.