SP-MS/MMS MP204

Summary

Product identification

The Grundfos SP system is a complete submersible pump system comprising:

• SP submersible pump (stainless steel)
• MS/MMS motor (submersible)
• MP 204 motor protection unit

Operating limits

• SP Submersible Pumps:
  • Flow rates: up to 470 m³/h
  • Head: up to 810 m
  • Warm water versions available: up to 60°C (for motors)
  • Resistant to sand and aggressive water.
• MP 204 Motor Protection Unit:
  • Ambient temperature: -20 to +60 °C
  • Relative humidity: 99%
  • Voltage variations: -25/+15% of nominal voltage
  • Motor temperature warning: 60°C
  • Motor temperature stop: 75°C
  • Dry-running protection: Stops pump if power consumption drops below 60%.
• MS/MMS Motors (Thrust Load):
  • MS 402: Max. 3.5 kN
  • MS 4000: 2.2 kN or 4.4 kN
  • MS 6: 6.5 kN or 27.5 kN
  • MMS:
    • 6”: 15 kN or 27.5 kN
    • 8” and 10”: 50 kN
    • 12”: 70 kN

Feed water

• Designed for applications including groundwater intake/water supply, irrigation/raw water supply, dewatering, thermal waters, pools, springs, fish farming, fountains, offshore, and pressure boosting.
• Resistant to sand and other abrasives.
• Resistant to aggressive water; extra high-grade stainless steel versions are available.
• Viton® rubber parts option makes the SP suitable for slightly contaminated water (e.g., oil).
• Water-filled motors and drinking water-approved cables prevent water contamination.

Electrical

• MS 402 Motor:
  • Phase: 1 and 3 phase
  • Start/run methods: 1 phase: PSC, 2W, 3W; 3 phase: DOL
  • Frequency: 50 Hz and 60 Hz
  • Voltage: 115-575 V
  • Outputs: up to 2.2 kW (3 hp)
  • Efficiency: 57-77
  • Insulation class: B
• MS 4000 Motor:
  • Phase: 1 and 3 phase
  • Start/run methods: 1 phase: 3W; 3 phase: DOL
  • Frequency: 50 and 60 Hz
  • Voltage: 208-575 V
  • Power: up to 30 kW
  • Efficiency: 75-81
  • Insulation class: F
• MS 6 Motor:
  • Phase: 3 phase
  • Start/run methods: DOL, SD
  • Frequency: 50 and 60 Hz
  • Voltage: 200-575 V
  • Power: up to 30 kW (40 hp)
  • Efficiency: 81-86
  • Insulation class: F
• MMS Motor:
  • Phase: 3 phase
  • Start methods: DOL, SD
  • Frequency: 50 and 60 Hz
  • Voltage: 200-1000 V
  • Power: up to 250 kW (340 hp)
  • Efficiency: 70-91
  • Insulation class: Y, possible A
• MP 204 Motor Protection Unit:
  • Voltage range: 80-610VAC
  • Current range: 3-999A (handles up to 120A on its own; up to 999A with external current transformers).
  • Frequency: 47-63 Hz
  • IEC trip class: 1-45
  • Special Grundfos trip class: 0.1-30 s
  • Protection and monitoring parameters:
    • Insulation resistance before start-up
    • Temperature (Tempcon, PT sensor and PTC thermal switch)
    • Overload / underload
    • Overvoltage / undervoltage
    • Phase sequence
    • Phase missing
    • Power factor (cos ϕ)
    • Power consumption
    • Harmonic distortion
    • Current asymmetry
    • Run and start capacitor (single-phase)
    • Operating hours and number of starts

Mechanical / hydraulic

• SP Submersible Pumps:
  • Available in 4, 6, 8, 10 and 12” diameter versions.
  • Construction: 100% high-grade stainless steel inside out (standard DIN W. Nr. 1.4301 / AISI 304). Extra high-grade steel versions available.
  • Features:
    • Built-in non-return valve to minimize water hammering damage.
    • Octagonal bearings and sand flush channels to remove particles.
    • Stop ring to protect pump in case of up thrust.
• MS/MMS Submersible Motors:
  • MS Motors:
    • Sizes: 4” and 6”.
    • Mechanical connection: 4” Nema flange (MS 402, MS 4000); 6” Nema flange (MS 6).
    • Material: Stainless steel DIN W.-Nr. 1.4301 (AISI 304). R-versions made from DIN W.-Nr. 1.4539 (AISI 904 L) also available.
    • Shaft seal: Mechanical ceramic/carbon; SiC/SiC optional for high sand resistance.
    • Bearings: Heavy-duty thrust bearings with high thrust capacity (Michell-type).
    • Cable plug: Re-usable cable plug in MS6 motors facilitates easy replacement.
  • MMS Motors:
    • Sizes: 6”, 8”, 10”, and 12”.
    • Mechanical connection: 6” and 8” with Nema flange.
    • Material: Stainless steel DIN W.-Nr. 1.4401 (AISI 316L) stator tube with cast iron endbells EN-JL-1040, or all-stainless steel DIN W.-Nr. 1.4401 (AISI 316L), or all-stainless steel DIN W.-Nr.1.4539 (AISI 904L).
    • Shaft seal: Mechanical ceramic/carbon; SiC/SiC optional for high sand resistance.
    • Bearings: Heavy-duty thrust bearings with high thrust capacity (Michell-type).
    • Rewindable motor: Stator can be rewound locally.
• MP 204 Motor Protection Unit:
  • Enclosure class: IP 20

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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 for the project.

Official datasheet (PDF)

Lenntech datasheet mirror