Grundfos SQFlex 2,5-2N Solar Pump
Power supply to pump 30-300 VDC, PE. 1 x 90-240 V – 10 %/+ 6 %, 50/60 Hz, PE.
Power consumption Maximum 300 W or 1400 W.
Current consumption Maximum 8.4 A.
Run-up time Depends on the energy source.
Start/stop No limitation to the number of starts/stops per hour.
Enclosure class IP68.
Built into the pump.
- dry running by means of a water level electrode
- overvoltage and undervoltage
Conductivity ≥ 70 μs/cm (micro siemens).
Sound pressure level The sound pressure level of the pump is lower than the limiting values stated in the EC Machinery Directive.
Radio noise The SQF complies with the EMC Directive 89/336/EEC. Tested according to the standards EN 61000-6-2 and EN 61000-6-3.
Reset function The SQF can be reset via the CU 200 or by disconnecting the power supply for 1 minute.
Power factor PF = 1.
Operation via generator Voltage: 230 VAC – 10 %/+ 6 %. The generator output must be minimum 1.55 kVA.
Earth-leakage circuit breaker
If the pump is connected to an electric installation where an earth-leakage circuit breaker (ELCB) is used as an additional protection, this circuit breaker must trip out when earth fault currents with DC content (pulsating DC) occur.
Borehole diameter SQF 0.6, SQF 1, SQF 1.2, SQF 2.5: Minimum: 76 mm. SQF 3A, SQF 5A, SQF 7, SQF 9, SQF 14. Minimum: 104 mm.
Installation depth Minimum: The pump must be completely submerged in the pumped liquid. Maximum: 150 m below the static water table (15 bar).
Holes of the suction strainer: SQF 0.6 (N), SQF 1 (N), SQF 1.2 (N), SQF 2.5 (N): ∅2.3. SQF 3A (N), SQF 5A: ∅2.5. SQF 5A N, SQF 8A (N), SQF 11A (N): 4 x 20 mm.
Pumped liquids pH 5 to 9. Sand content up to 50 g/m3.