SP Submersible Systems

Summary

Product identification

The Grundfos SP System is a complete submersible pump system comprising an SP submersible pump, an MS/MMS motor, a dedicated electronic motor protection unit (MP 204) or variable speed drive (CUE), and a remote management system (Grundfos Remote Management).

Operating limits

• Flow rates: Up to 470 m³/h
• Head: Up to 810 m
• Pump diameters: 4, 6, 8, 10, and 12 inch
• Motor power:
  • MS motors: Up to 30 kW
  • MMS motors: Up to 250 kW
• Motor operating temperature (warm water versions):
  • MS motors: Up to 60°C
  • MMS motors: Up to 50°C
• MP 204 motor protection: For motors ranging from 3 to 999 amps and voltages from 100 to 480 VAC.
• MP 204 temperature monitoring: Warning at 60°C, motor stop at 75°C.

Feed water

The SP system is designed for efficient water handling, including groundwater extraction and irrigation. Key features for feed water compatibility include:

• Corrosion resistance: 100% high-grade stainless steel (AISI 304) inside and out, with extra high-grade steel versions available for aggressive liquids.
• Sand resistance: Octagonal bearings and sand flush channels remove particles, providing longer life in sandy underground environments.
• Contamination tolerance: FKM rubber parts option makes the SP suitable for water slightly contaminated with, for example, oil.
• Motor materials for aggressive water:
  • MS motors: R-versions made from EN 1.4539 (AISI 904 L) are available.
  • MMS motors: All-stainless steel EN 1.4401 (AISI 316L) or EN 1.4539 (AISI 904L) versions are available.
• Drinking water safety: Water-filled motors and drinking water-approved cables prevent water contamination.

Electrical

The system includes various motor types and control options:

• Motor types:
  • MS 402: 1 and 3 phase, 50 Hz and 60 Hz, 115-575 V, up to 2.2 kW (3 hp).
  • MS 4000: 1 and 3 phase, 50 and 60 Hz, 208-575 V, up to 30 kW.
  • MS 6000: 3 phase, 50 and 60 Hz, 200-575 V, up to 30 kW.
  • MMS: 3 phase, 50 and 60 Hz, 200-1000 V, up to 250 kW.
• Motor efficiencies:
  • MS 402: 57-77%
  • MS 4000: 75-81%
  • MS 6000: 81-86%
  • MMS: 70-91%
• Motor protection unit (MP 204) parameters monitored:
  • Insulation resistance before start-up
  • Temperature (Tempcon, PT sensor and thermal switch)
  • Overload/underload
  • Overvoltage/undervoltage
  • Phase sequence
  • Phase missing
  • Power factor (cos ф)
  • Power consumption
  • Harmonic distortion
  • Current asymmetry
  • Run and start capacitor (single-phase)
  • Operating hours and number of starts

Mechanical / hydraulic

SP Submersible Pumps

• Design: Superior hydraulic design for efficiency and reliability.
• Materials: 100% high-grade stainless steel (AISI 304) inside and out.
• Features:
  • Built-in non-return valve to minimize water hammering damage.
  • Improved discharge for easier and safer attachment to riser pipe.
  • Improved screw-on attachment of the cable guard.
  • Octagonal bearings and sand flush channels for wear resistance.
  • Stop ring to protect the pump in case of up thrust.

MS/MMS Submersible Motors

• Types:
  • MS motors: Canned, 4″ and 6″ sizes.
  • MMS motors: Rewindable, 6″, 8″, 10″, and 12″ sizes.
• Shaft seal: Mechanical ceramic/carbon shaft seal standard, SiC/SiC shaft seal optional for high sand resistance. Exchangeable for easy service.
• Thrust capacity: Michell-type thrust bearings with high capacity.
  • MS 402: Max. 3.5 kN
  • MS 4000: 2.2 kN or 4.4 kN
  • MS 6000: 7.5 kN, 27 kN or 40 kN
  • MMS: 6″, 15 kN or 27.5 kN; 8″ and 10″, 50 kN; 12″, 70 kN
• Mechanical connection: Nema flange (4″ for MS 402/4000, 6″ for MS 6000, 6″ and 8″ for MMS).
• Materials:
  • MS motors: Stainless steel EN 1.4301 (AISI 304). R-versions in EN 1.4539 (AISI 904 L).
  • MMS motors: Stainless steel EN 1.4301 (AISI 304) stator tube with cast iron endbells EN-JL-1040, or all-stainless steel EN 1.4401 (AISI 316L), or all-stainless steel EN 1.4539 (AISI 904L).
• Temperature monitoring (MS motors): Built-in Tempcon or Pt 100/1000 temperature sensor available.

Controls and Monitoring

The SP system offers comprehensive control and monitoring solutions:

• Variable Frequency Drives (CUE): External frequency converters for speed, pressure, level, and flow control, offering motor protection and soft start/stop.
• Motor Protection Unit (MP 204): Provides protection against undervoltage, overvoltage, and other power supply variations, including dry running and overload. Monitors motor temperature via Tempcon sensor.
• Grundfos Remote Management: Cost-effective remote monitoring and management of pump installations, providing overview of operation, performance, trends, energy consumption, and preventative maintenance notifications. Compatible with MP 204 and CUE, and connectable to any SCADA system.
• Grundfos GO: Mobile control application for changing configuration parameters and monitoring electrical data on the go. Compatible with MP 204.

---

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror