Grundfos SE.100.170.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Sewage with Open S-Tube Impeller

Large-scale facility maintenance requires the reliable movement of wastewater in dry or submerged environments. The SE.100.170.4.52H.N.51D.A.T provides the hydraulic capacity necessary for heavy-duty effluent transfer where fluid temperatures range between -10 and 40 degrees Celsius. Maintaining circulation integrity during intensive duty cycles is necessary for drainage stations and municipal lift stations. This unit supports continuous service in gravity drainage networks prone to varying liquid levels.

Hydraulic capacity is driven by a 17 kW four-pole motor operating on a 415v three-phase supply with a rated current of 37 Amps. This assembly generates a maximum flow of 7800 L/Min and reaches a maximum head of 27.4 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 1480 rpm, the unit ensures consistent pressure behavior for liquid optimization duties.

Internal fluid velocity paths utilize a high-efficiency Open S-Tube impeller designed for the centrifugal movement of liquids without internal clogging. This configuration handles solids in suspension through the housing, maintaining volumetric efficiency throughout thousands of operating hours in municipal networks. By utilizing a high-efficiency hydraulic profile, the unit reduces internal friction and vibration to protect the rotating assembly during high-volume discharge. The Open S-Tube setup is intended for wastewater transfer where reliable solids handling is required.

Mechanical construction features a heavy-duty cast iron housing and motor shell with an IP68 enclosure rating for immersion up to 20 m. Motor insulation is maintained by a Class H assembly shielded by a double mechanical shaft seal arrangement in an oil bath for maximum durability. Integrated moisture sensors and thermistors allow for proactive monitoring and early fault detection in submerged conditions. The casting includes a 351 kg net weight and DN 150 inlet for high-capacity integration into standardized wastewater infrastructure.

Features

• Open S-Tube impeller configuration facilitates high-efficiency liquid handling and prevents internal blockages in municipal wastewater 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 contamination.
• IP68 protection rating confirms the system is suitable for continuous duty in submerged environments up to 20 m deep.
• Integrated thermistors and moisture sensors enable real-time monitoring to protect the Class H insulated motor assembly.
• Four-pole motor operating at 1480 rpm provides the starting torque required for high-volume wastewater collection systems.
• DN 150 inlet and DN 100 outlet connections allow for high-capacity liquid transfer through standard municipal pipework.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.