Grundfos SE.150.110.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Sewage Collection with Open S-Tube Impeller

Operational load scaling for municipal drainage networks is supported by the heavy-duty structural foundation of the SE.150.110.4.52H.N.51D.A.T. This pump addresses the requirements for the removal of contaminated liquids in dry or submerged installations where reliable solids passage is required for system maintenance. The system maintains stable performance in permanent installations with liquid temperatures up to 40 degrees Celsius. Maintaining operational flow behavior in deep subsurface pits is essential for drainage transfer duties.

Hydraulic capacity is provided by an 11 kW four-pole motor operating on a 415v three-phase supply with a rated current of 23 Amps. This assembly generates a maximum flow of 6660 L/Min and achieves a maximum head of 22.4 m. The motor utilizes a star-delta starting method to manage peak electrical loads and ensure torque stability during initial activation cycles. Operating at a rated speed of 1481 rpm, the unit ensures consistent pressure behavior for high-volume wastewater handling infrastructure.

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 throughput during prolonged service. By utilizing the Open S-Tube principle, the unit minimizes internal wear and vibration for the rotating assembly during high-volume discharge. The hydraulic setup is intended for high-capacity liquid handling and effluent transfer in municipal collection systems.

Mechanical integrity is reinforced by an IP68 protection rating and a double mechanical shaft seal arrangement for motor insulation. The primary silicon carbide seal and secondary silicon carbide/carbon seal in an oil bath protect the Class H insulation motor from liquid ingress. This model includes integrated moisture sensors and thermistors for proactive monitoring and early fault detection in submerged conditions. The architectural casting features a 325 kg net weight and DN 150 inlet connections for high-capacity integration into standardized 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 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.
• Four-pole motor operating at 1481 rpm provides the hydraulic torque required for processing high-volume wastewater collection.
• Standardized DN 150 inlet and DN 150 outlet connections allow for high-capacity liquid transfer through municipal pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.