P 7045 7055 7050

Summary

Product identification

The P7045, P7050, and P7055 are large submersible propeller pumps designed for transporting large volumes of water at low heads. They are intended for column installation and feature a considerably smaller footprint than conventional pumps.

• Applications: Clean, surface, or storm water. An N-version propeller design is available for pumping screened wastewater with sustained high efficiency.
• Installation: L-installation.
• Accessories:
  • Mechanical: Cable handling systems, Lifting equipment.
  • Electrical: Pump controller, Control panels, Starters, MAS and other monitoring relays.
• Options: Zinc anodes for corrosion protection, Special coating system (with epoxy base coat) for demanding environments, Power monitoring, Monitoring options for temperature, vibration, and water in the oil housing.

Operating limits

• Liquid temperature: Max. +40°C (+105°F)
• Depth of immersion: Max. 20 m (65 ft)
• pH of pumped liquid: pH 5.5–14
• Liquid density: Max. 1100 kg/m³ (9.17 lb per gal.)

Mechanical / hydraulic

• Depth of immersion: The maximum depth of immersion is 20 m (65 ft.).
• Weight: See the dimensional drawing for pump weights.
• Pump (ball-) throughlet:
  • P7045: Max. 85 mm (3.34 in.)
  • P7050: Max. 80 mm (3.15 in.)
  • P7055: Max. 110 mm (4.33 in.)
• Drive units: Maximum number of starts per hour is 15 for all P7045, P7050, and P7055 models (600 and 680 drive units).

Electrical

• Cables: SUBCAB® cables are rated for a maximum voltage of 600–1000 V, intended for drive units up to 1 kV.
• Motor characteristics:
  • Frequency: 50 Hz or 60 Hz
  • Stator insulation class: H (180°C [360°F])
  • Voltage variation: Max. +/- 10%
  • Voltage imbalance between the phases: 2%
  • Motor encapsulation: IP68
• Monitoring systems:
  • P7055/680 (optional with MAS-711): Designed for use with Flygt MAS-711 monitoring system. Parameters tracked can include:
    • Temperature (main and support bearings, stator windings)
    • Vibration
    • Leakage (in stator housing, junction box, and water into oil chamber)
    • Power monitoring
  • Standard sensors (MAS-711): Pump memory (includes temperature sensor), Leakage in junction box (Float Switch Leakage Sensor - FLS), Main bearing temperature (Pt100 analogue temperature sensor), Leakage in stator housing (FLS), Stator winding temperature.
  • Optional sensors (MAS-711): Support bearing temperature (Pt100 analogue temperature sensor), Water in oil (Capacitive Leakage Sensor - CLS), Vibration (VIS 10), Power monitoring (separate electronic instrument using three current transformers).
  • Stator winding temperature monitoring configurations:
    • Up to 1 kV: Standard includes 3 thermal switches or optional 3 PTC-thermistors. Standard also includes a Pt100 analogue temperature sensor in 1 stator winding, with an optional Pt100 in 2 additional stator windings.
    • 1.2–6.6 kV: PTC-thermistors (3+3, with 3 built-in reserves). Pt100 analogue temperature sensors in all 3 stator windings (3+3, with 1 built-in reserve per winding).
  • Available monitoring systems (P7045, P7055):
    • MAS-711: Available for 680 drive units (partially available for P7055/680).
    • CAS: Available for 680 drive units (older pumps may be equipped). Replaced by MAS system.
    • MiniCAS: Available for 600 and 680 drive units.

Materials

• Propeller:
  • P7050: Aluminum bronze (copper-aluminum alloy, EN 1982 No. CC333G / ASTM C95500) or Austenitic stainless steel (EN 10283 No. 1.4308 / ASTM A 743 CF-8).
  • P7045, P7055: Cast iron (EN 1561 No. JL 1040 / ASTM-A 48 – No 35 B).
• Pump housing (P7045, P7050, P7055): Cast iron (EN 1561 No. JL 1040 / ASTM-A 48 – No 35 B).
• Mechanical face seals:
  • Inner seal: Corrosion resistant cemented tungsten carbide (WCCR) for both rotating and stationary rings.
  • Outer seal: Can be either Corrosion resistant cemented tungsten carbide (WCCR) or Corrosion resistant silicon carbide (RSiC) for both rotating and stationary rings.
• Drive unit shaft (P7045, P7050, P7055): Structural steel (EN 10025-2 Nos. 1.0045, 1.0553, 1.0577, 1.0596 / ASTM A572 Grade 50) or Duplex stainless steel (EN 10088-3 No. 1.4460 / ASTM/AISI 329).
• O-rings: Nitrile rubber 70⁰ IRH.
• Coating system:
  • Standard: Acrylic (waterborne) or alkyd (solventborne) basecoat, Oxirane ester 2–pack topcoat. Total dry film thickness 120–350 μm.
  • Special (option): Epoxy 2 layers basecoat, Oxirane ester 2–pack 1 layer topcoat. Total dry film thickness 350–700 μm.
  • Other coating systems are available for special requirements such as drinking water, high temperature, or erosion applications.

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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