Grundfos SE.100.240.2.52S.N.51D.A.T Cast Iron 2-Pole Sewage Pump for Drainage with Open S-Tube Impeller

Environmental demands in large-scale municipal complexes require specialized hydraulic solutions for efficient effluent management and wastewater collection. The Grundfos SE.100.240.2.52S.N.51D.A.T handles contaminated liquids in subsurface pits where reliable solids passage is required for system maintenance. This two-pole pump maintains stable performance at temperatures up to 40 degrees Celsius in drainage stations and lift stations. Maintaining operational flow behavior in permanent submerged installations is essential for civil infrastructure protection.

Hydraulic capacity is driven by a 24 kW motor operating on a 415v three-phase supply with a rated current of 49 Amps. This assembly generates a maximum flow of 5334 L/Min and achieves a maximum head of 55.6 m. The motor utilizes a star-delta starting method to manage peak electrical loads and maintain torque stability during high-volume activation cycles. Operating at a rated speed of 2971 rpm, the unit ensures consistent pressure behavior in deep-pit applications.

Internal centrifugal design utilizes a high-efficiency Open S-Tube impeller to facilitate the passage of solids in suspension without internal contact. This configuration handles particles through the housing, preventing the internal clogging that could compromise volumetric efficiency over thousands of service hours. By utilizing the Open S-Tube principle, the design reduces internal wear and vibration for the rotating assembly during high-head discharge. The Open S-Tube setup is intended for high-volume wastewater transfer in municipal and industrial collection systems.

Mechanical integrity is reinforced by an IP68 protection rating and a silicon carbide shaft sealing system for motor insulation. Longevity is maintained by Class H insulation components and a double mechanical seal arrangement in an oil bath for maximum durability. This model includes integrated moisture sensors and thermistors to facilitate monitoring of the electrical assembly in submerged conditions. The architectural casting includes a 326 kg net weight and DN 100 ports for integration into standardized wastewater infrastructure.

Features

• Open S-Tube impeller configuration facilitates high-efficiency liquid handling and prevents internal blockages in municipal networks.
• Heavy-duty cast iron housing and motor shell provide the structural durability needed for permanent submerged installations up to 20 m deep.
• Double mechanical shaft seal featuring silicon carbide faces in an oil bath ensures the motor remains shielded from liquid ingress.
• IP68 protection rating confirms the unit is suitable for continuous duty in submerged environments up to 20 m deep.
• Integrated thermistors and moisture sensors enable real-time monitoring to safeguard the Class H insulated motor assembly.
• Two-pole motor operating at 2971 rpm provides the high-velocity discharge required for wastewater collection systems.
• Standardized DN 100 inlet and DN 100 outlet connections allow for seamless integration into municipal wastewater pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.