CP 3057 HT

Summary

Product Identification

The Flygt 3057, 50Hz is a submersible pump designed for pumping waste water, sludge, ground water, and other liquids containing solids.

Two main versions are described:

• C-pump: High head (HT)
• D-pump: Medium head (MT). A special Abrasion Resistant Version (ARV) is available for media with light or medium concentrations of abrasive solids.

Denomination:

• Non explosion proof version: 3057.181
• Explosion proof version: 3057.091

Installation Types: The pump can be used in the following installations:

• F: Free standing semi permanent, wet well arrangement where the pump is placed on a firm surface.
• P: Semi permanent, wet well arrangement with pump installed on two guide bars with automatic connection to discharge.
• S: Portable semi permanent, wet well arrangement with hose coupling or flange for connection to discharge pipeline.

Operating Limits

• Liquid temperature: Maximum 40°C (104°F)
• Liquid temperature, warm water version: Maximum 70°C (158°F)
• Depth of immersion: Maximum 20 m (65 ft)
• pH of the pumped liquid: 5.5 – 14
• Liquid density: Maximum 1100 kg/m³

Electrical

• Motor type: Squirrel-cage induction motor
• Frequency: 50 Hz
• Power supply: 1-phase or 3-phase
• Starting method: Direct on-line, Star-delta (Star-delta starting current is 1/3 of Direct on-line starting current)
• Number of starts per hour: Maximum 15
• Code compliance: IEC 60034-1
• Rated output variation: ±10%
• Voltage variation:
  • Continuously running: Maximum ±5%
  • Intermittent running: Maximum ±10%
• Voltage imbalance between phases: Maximum 2%
• Insulation class: F (+155°C)

Cables (SUBCAB® heavy-duty submersible cable):

• C-pump:
  • Direct-on-line start: 4G1.5 mm², 4G2.5 mm², 4G2.5+2×1.5 mm²
  • Y/D start: 7G2.5 mm², 7G2.5+2×1.5 mm²
• D-pump:
  • Direct-on-line start: 4G2.5 mm², 4G2.5+2×1.5 mm²
  • Y/D start: 7G2.5 mm², 7G2.5+2×1.5 mm²

Monitoring Equipment:

• Thermal contacts opening temperature 125°C (257°F)

Motor Rating (C-pump):

• 400 V, 50 Hz, 3-phase:
  • Rated power: 1.7 kW (2.3 hp) to 2.4 kW (3.2 hp)
  • Rated current: 3.8 A to 5.1 A
  • Starting current: 17 A to 27 A
  • Power factor (cos φ): 0.86 to 0.87
  • Revolutions per minute: 2695 rpm to 2775 rpm
  • Impeller throughlet: 48 mm
• 230 V, 50 Hz, 1-phase:
  • Rated power: 1.5 kW (2 hp)
  • Rated current: 9.4 A
  • Starting current: 27 A
  • Power factor (cos φ): 1
  • Revolutions per minute: 2695 rpm
  • Impeller throughlet: 48 mm

Motor Rating (D-pump):

• 400 V, 50 Hz, 3-phase:
  • Rated power: 1.7 kW (2.3 hp) to 2.4 kW (3.2 hp)
  • Rated current: 3.8 A to 5.1 A
  • Starting current: 17 A to 27 A
  • Power factor (cos φ): 0.86 to 0.87
  • Revolutions per minute: 2695 rpm to 2775 rpm
  • Impeller throughlet: 24 mm or 48 mm

Mechanical / Hydraulic

Materials:

• Major castings: Cast iron, gray (ASTM 35B, EN GJL-250)
• Pump housing:
  • C-pump: Cast iron, gray (ASTM 30B, EN GJL-200)
  • D-pump, alternative 1: Cast iron, gray (ASTM 30B, EN GJL-200)
  • D-pump, alternative 2: Cast iron, nodular (EN GJS-700-2)
• Impeller:
  • C-pump: Stainless steel (AISI 304, EN 1,4301)
  • D-pump, alternative 1: Cast iron, gray (ASTM 30B, EN GJL-200)
  • D-pump, alternative 2: Cast iron, nodular (EN GJS-700-2)
• Suction cover: Stainless steel (AISI 304, EN 1,4301)
• Lifting handle: Stainless steel (AISI 304, EN 1,4301)
• Shaft: Stainless steel (AISI 431, EN 1.4057+QT800)
• Screws and nuts: Stainless steel, A2 (AISI 304, EN 1.4301, 1.4306, 1.4307, 1.4311)
• O-rings:
  • C-pump, alternative 1: Nitrile rubber (NBR) 70° IRH
  • C-pump, alternative 2 / D-pump: Fluorinated rubber (FPM) 70° IRH
• Oil, part no 901752: Medical white oil of paraffin type, fulfills FDA 172.878 (a)

Mechanical Face Seals: Three alternatives are available for inner and outer seals:

1. Inner: Carbon/Aluminum oxide; Outer: Aluminum oxide/Corrosion resistant cemented carbide
2. Inner: Carbon/Aluminum oxide; Outer: Corrosion resistant cemented carbide/Corrosion resistant cemented carbide
3. Inner: Corrosion resistant cemented carbide/Corrosion resistant cemented carbide; Outer: Corrosion resistant cemented carbide/Corrosion resistant cemented carbide

Surface Treatment:

• Priming: Painted with a primer (see internal standard M0700.00.0002)
• Finish: Navy gray color NCS 5804-B07G. Two-component high-solid top coating (see internal standard M0700.00.0004 for standard painting and M0700.00.0008 for special painting).

Options:

• Warm liquid version (non-explosion proof versions)
• Leakage sensor in the stator housing (FLS)
• Zinc anodes
• Other cables

Accessories:

• Discharge connections, adapters, hose connections, and other mechanical accessories.
• Electrical accessories such as pump controller, control panels, starters, monitoring relays, cables.

Dimensions and Weight: All drawings are available as Acrobat documents (.pdf) and AutoCad drawings (.dwg). All dimensions are in mm. See the official PDF for exact tabulated values and drawings.

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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 original OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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