Grundfos SE.100.150.4.52H.N.51D.A.T Cast Iron 4-Pole Sewage Pump for Drainage with Open S-Tube Impeller

Civil infrastructure maintenance requires specialized subsurface equipment capable of handling contaminated liquids in municipal wastewater systems. The SE.100.150.4.52H.N.51D.A.T establishes circulation stability for effluent management and sewage transfer where fluid temperatures reach 40 degrees Celsius. Maintaining structural integrity during continuous duty is necessary for drainage stations and collection networks. This unit supports municipal infrastructure protection across varying liquid levels in deep collection pits.

Hydraulic performance is provided by a 15 kW four-pole motor on a 415v three-phase supply, generating a maximum flow of 7500 L/Min and a maximum head of 26.3 m. Operating with a rated current of 30 Amps at 1480 rpm, the unit maintains consistent torque and hydraulic stability during high-load duty cycles. A star-delta starting method is utilized to optimize electrical consumption and manage start-up loads in deep-pit applications. Power is distributed through a 15-metre power cable to facilitate deployment in large-scale wastewater networks.

Internal centrifugal design utilizes an Open S-Tube impeller configuration to facilitate the passage of solids in suspension. This setup facilitates the free passage of particles through the housing, preventing the contact 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 configuration is intended for high-capacity liquid handling where reliable flow behavior is necessary.

Mechanical integrity is reinforced by an IP68 protection rating and a silicon carbide shaft sealing system for motor protection. 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 15 kW electrical assembly in submerged conditions. The architectural casting includes a 344 kg net weight and DN 150 inlet with DN 100 outlet connections for standardized municipal infrastructure.

Features

• Open S-Tube impeller design enables the passage of solids through the pump casing without compromising hydraulic throughput.
• Cast iron pump housing and motor shell provide a rigid structural foundation for installations up to 20 m deep.
• Double mechanical shaft seal utilizing silicon carbide faces in an oil bath ensures the motor remains shielded from liquid ingress.
• Internal thermistors and moisture sensors provide real-time monitoring to safeguard the Class H insulation assembly against overheating.
• Four-pole motor configuration operating at 1480 rpm provides the torque required for processing high-volume wastewater.
• Standardized DN 150 inlet and DN 100 outlet connections allow for high-capacity liquid transfer through standard plumbing.
• IP68 protection rating confirms the system is suitable for permanent immersion in wastewater environments.
• Integral cooling jacket supports operational integrity in both dry and submerged installation environments.