A typical solar pumping system is composed of a PV generator array, a pump and a solar pump controller. Based on the design philosophy that it is more efficient to store water rather than electricity, there is no energy storing device such as a storage battery in a typical solar pumping system.
The PV generator, an aggregation of PV modules connected in series and in parallel, absorbs solar irradiation and converts it into electrical energy, providing power for the whole system. The pump controller controls and adjusts the system operation and adjusts the output frequency in real-time according to the variation of sunlight intensity to realize the maximum power point tracking (MPPT). Each LORENTZ pump system consists of a pump end, pump motor and a controller. This modular concept keeps all electronics above ground even for submersible pumps, simplifying servicing and lowering cost of ownership.

System Overview
Head max. 80 m.
Flow rate max. 13 m³/h

Technical Data

• Controller PS2-4000.
• Controlling and monitoring.
• Control inputs for dry running protection, remote control etc.
• Protected against reverse polarity, overload and overtemperature.
• Integrated MPPT (Maximum Power Point Tracking).
• Integrated Sun Sensor.
• Power max.: 4,0 kW.
• Input voltage max.: 375 V.
• Optimum Vmp**: > 238 V.
• Motor current max.: 14 A.
• Efficiency max.: 98 %.
• Ambient temp.: -40 °C to 50 °C.
• Enclosure class: IP68.

Motor ECDRIVE 4000-C

• Maintenance-free brushless DC motor.
• Water filled.
• Premium materials, stainless steel: AISI 304/316.
• No electronics in the motor.
• Rated power: 4,0 kW.
• Efficiency max.: 92 %.
• Motor speed: 900 rpm to 3 300 rpm
• Insulation class: F.
• Enclosure class: IP68.
• Submersion max. 150 m.

Pump End PE C-SJ8-15

• Non-return valve
• Premium materials, stainless steel: AISI 304
• Dry running protection included.
• Centrifugal pump.
• Efficiency max.: 68 %.

Pump Unit PU4000 C-SJ8-15 (Motor, Pump End)

• Borehole diameter min.: 10 cm.
• Water temperature max.: 50 °C.

Dimensions and Weight

• Controller Dimensions: 352 mm x 207 mm x 124 mm.
• Pump Unit dimensions: 1118 mm x 96 mm.
• Controller Weight: 6.1 kg.
• Pump Unit Weight: 21 kg.