Grundfos SP 3A-6 Submersible Borehole Pump
Technical Specifications and Product Information
Product Overview
Product Name: SP 3A-6
Product Number: 10001K06
The Grundfos SP 3A-6 is a submersible borehole pump designed for pumping clean water. It offers versatility in installation, supporting both vertical and horizontal orientations. All steel components are constructed from stainless steel, specifically EN 1.4301 (AISI 304), which provides high corrosive resistance and ensures the pump carries drinking water approval.
The pump is equipped with a 0.37 kW MS402 motor. This motor features a sand shield, lip seal, water-lubricated journal bearings, and a volume-compensating diaphragm. It is a canned type submersible motor, known for its good mechanical stability and high efficiency. The motor is suitable for operating temperatures up to 40 °C.
The motor is not supplied with a built-in temperature sensor. However, a Pt1000 sensor can be fitted for temperature monitoring purposes.
The motor is designed for direct-on-line (DOL) starting.
Applications
The SP 3A-6 pump is suitable for a range of applications, including:
- Raw-water supply
- Irrigation
- Groundwater lowering
- Pressure boosting
- Fountain applications
Pump Details
All pump surfaces that come into contact with pumped liquids are made of stainless steel, ensuring excellent corrosion and wear resistance. The material used is EN 1.4301 (AISI 304).
The elastomer parts within the pump are manufactured from NBR (Nitrile-Butadiene Rubber) and TPU (Thermoplastic Poly-Urethane). These materials provide good wear resistance and contribute to long service intervals.
The suction interconnector is fitted with a strainer to prevent the ingress of large particles into the pump. Its design complies with NEMA standards for motor mounting and dimensions.
Corrosion Resistance Diagram: A diagram illustrates the pump and motor's capabilities concerning temperature (y-axis, Celsius) and chloride concentration (x-axis, ppm). It shows two curves for EN 1.4301 material, indicating acceptable operating ranges for different chloride levels (0-2000 ppm and 0-20000 ppm).
Motor Details
The motor's stator is hermetically encapsulated in stainless steel. Its windings are embedded in a polymer compound, which enhances mechanical stability, provides optimum cooling, and minimizes the risk of short circuits.
The shaft seal is a lip seal type, characterized by low friction against the rotor shaft. The NBR elastomer used offers good wear resistance, elasticity, and resistance to particles. This rubber material is approved for use in potable water.
The motor can be fitted with a Pt100 or Pt1000 sensor. When used with a control unit, these sensors ensure that maximum operating temperature conditions are not exceeded.
Technical Specifications
General Information
| Product Name: | SP 3A-6 |
| Product No.: | 10001K06 |
| EAN Number: | 5708601051364 |
Technical Data
| Pump speed (data based on): | 2900 rpm |
| Rated Flow: | 3 m³/h |
| Rated Head: | 27 m |
| Stages: | 6 |
| Impeller Reduc.: | NONE |
| Shaft Seal for Motor: | LIPSEAL |
| Approvals on Nameplate: | CE, EAC |
| Curve Tolerance: | ISO9906:2012 3B |
| Motor Version: | T40 |
| 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
| Pump Outlet: | Rp1 1/4 |
| Motor Diameter: | 4 inch |
Liquid Properties
| Pumped Liquid: | Water |
| Liquid Max Temp: | 40 °C |
| Max Liquid Temp at 0.15 m/sec: | 40 °C |
| Selected Liquid Temperature: | 20 °C |
| Density: | 998.2 kg/m³ |
Electrical Data
| Motor Type: | MS402 |
| Applicable Motor: | GRUNDFOS |
| Rated Power - P2: | 0.37 kW |
| Power (P2) Required by Pump: | 0.37 kW |
| Mains Frequency: | 50 Hz |
| Rated Voltage: | 3 x 380-400-415 V |
| Rated Current: | 1.30-1.40-1.50 A |
| Starting Current: | 400-390-380% |
| Cos phi - Power Factor: | 0.70-0.64-0.60 |
| Rated Speed: | 2850-2860-2870 rpm |
| Start Method: | direct-on-line |
| Enclosure Class (IEC 34-5): | IP68 |
| Insulation Class (IEC 85): | B |
| Built-in Motor Protection: | NONE |
| Thermal Protection: | external |
| Built-in Temp. Transmitter: | no |
| Motor No: | 79192002 |
| Windings: | Enamelled |
Other Information
| Minimum Efficiency Index, MEI ≥: | 0.70 |
| ErP Status: | EuP Standalone/Prod. |
| Net Weight: | 10.2 kg |
| Gross Weight: | 11.4 kg |
| Shipping Volume: | 0.011 m³ |
| Danish VVS No.: | 388313060 |
| Swedish RSK No.: | 5852977 |
| Finnish LVI No.: | 4762650 |
| Country of Origin: | DK |
| Custom Tariff No.: | 84137029 |
Performance Data Descriptions
Performance Curves: The document includes performance curves for the SP 3A-6 pump operating at 3x400V, 50Hz, with water as the pumped liquid at 20°C and a density of 998.2 kg/m³.
- Head (m) vs. Flow (Q) [m³/h]: This graph shows the pump's head capability. It starts at approximately 30 meters of head at zero flow and decreases to about 20 meters of head at a flow rate of 3 m³/h.
- Efficiency (η) [%] vs. Flow (Q) [m³/h]: This curve illustrates the pump's efficiency. It peaks at around 80% efficiency at a flow rate of approximately 1.5 m³/h, dropping to about 60% at the maximum flow rate of 3 m³/h.
- Power (P) [W] vs. Flow (Q) [m³/h]: This graph displays power consumption. The P1 curve (input power) starts at approximately 500W and increases to about 600W at 3 m³/h. The P2 curve (output power) starts at approximately 300W and increases to about 400W at 3 m³/h.
Wiring Diagram: A simplified electrical wiring diagram is provided, illustrating the connections for a three-phase motor. It shows terminals L1, L2, L3, and PE (Protective Earth) connected to the motor's U, V, W windings, and PE terminal respectively.
SP 3A-6 - 10001K06 | Grundfos
