Grundfos Submersible groundwater pump SP 3A-25

Grundfos SP are submersible borehole pumps, designed for pumping groundwater. Grundfos SP are all stainless-steel pumps, and they are available in 3 material grades. The pumps are suitable for boreholes in sizes ranging from 4″ over 6″ and 8″ to 10″. The motor sizes for the pumps are available in 0.37-250 kW.

Submersible borehole pump, suitable for pumping clean water. Can be installed vertically or horizontally. All steel
components are made in stainless steel, EN 1.4301 (AISI 304), that ensures high corrosive resistance. This pump
carries drinking water approval.
The pump is fitted with a 1.5 kW MS402 motor with sand shield, lip seal, water-lubricated journal bearings and a
volume compensating diaphragm. The motor is a canned type submersible motor offering good mechanical stability
and high efficiency. Suitable for temperatures up to 40 °C.
The motor is not fitted with a temperature sensor. If temperature monitoring is desired, a Pt1000 sensor can be fitted.
The motor is for direct-on-line starting (DOL).
Further product details
The pump is suitable for applications similar to the following:
– raw-water supply
– irrigation
– groundwater lowering
– pressure boosting
– fountain applications.
Pump
All pump surfaces that are in contact with pumped liquids are made in stainless steel which makes them corrosionand wear-resistant.

The elastomer parts in the pump are made of NBR (Nitrile-Butadiene Rubber) and TPU (Thermoplastic
Poly-Urethane) which offers good wear resistance and long service intervals.
The suction interconnector is fitted with a strainer to prevent large particles from entering the pump. The suction
interconnector is designed to comply with NEMA standards for motor mounting/dimensions.
Motor
The stator is hermetically encapsulated in stainless steel and the windings are embedded in polymer compound. This
results in high mechanical stability, optimum cooling and reduces the risk of short circuits in the windings

The shaft seal is of the lip seal type characterised by low friction against the rotor shaft. The NBR elastomer offers
good wear resistance, good elasticity and resistance to particles. The rubber material is approved for use in potable
water.
The motor can be fitted with a Pt100 or Pt1000 sensor that together with a control unit ensures that the maximum
operating temperature conditions are not exceeded.

Liquid:
Pumped liquid: Water
Liquid temperature range: -15 .. 40 °C
Selected liquid temperature: 20 °C
Density: 998.2 kg/m³
Technical:
Pump speed on which pump data are based: 2900 rpm
Rated flow: 3 m³/h
Rated head: 111 m
Shaft seal for motor: LIPSEAL
Approvals: CE,EAC,UKCA,SEPRO,MOROCCO
Approvals for drinking water: ACS,DM174
Curve tolerance: ISO9906:2012 3B
Motor version: T40
Return valve: YES
Specification for shaft end: SPLINE
Materials:
Pump: Stainless steel
EN 1.4301
AISI 304
Impeller: Stainless steel
EN 1.4301
AISI 304
Motor: Stainless steel
DIN W.-Nr. 1.4301
AISI 304
Installation:
Maximum ambient pressure: 15 bar
Maximum operating pressure: 15 bar
Maximum outlet pressure: 16 bar
Type of connection: Rp
Size of connection: 1 1/4 inch
Motor diameter: 4 inch
Minimum borehole diameter: 105 mm
Electrical data:
Motor type: MS402
Motor flange design: Grundfos
Rated power – P2: 1.5 kW
Power (P2) required by pump: 1.5 kW
Mains frequency: 50 Hz
Rated voltage: 3 x 380-400-415 V
Rated current: 4.10-4.20-4.40 A
Starting current: 490-500-500 %
Cos phi – power factor: 0.80-0.75-0.70
Rated speed: 2850-2860-2870 rpm
Start. method: DOL
Enclosure class (IEC 34-5): IP68
Insulation class (IEC 85): B

Built-in temp. transmitter: N
Length of cable: 1.7 m
Power cable type: FLAT
Motor No: 79192006
Windings: Enamelled
Others:
Minimum efficiency index, MEI ≥: 0.70
Net weight: 18.1 kg
Gross weight: 19.8 kg
Shipping volume: 0.021 m³
Country of origin: DK
Custom tariff no.: 84137029
Environmental approvals: WEEE