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Lorentz PS2-600 Solar Borehole Pump: Centrifugal and Helical Rotor Options
The Lorentz PS2-600 is the middle of the PS2 range. Its 0.7 kW controller covers a lot of ground, from a 15 m lift at up to 12 m³/h to a 180 m lift at under half a cubic metre an hour, so it suits livestock watering, irrigation and farm or estate supplies where there is no mains power. It fits boreholes and wells of 4 inches (100 mm) or larger, and the controller accepts an array of up to 150 V. The controller runs from solar panels and has built-in MPPT, which keeps the pump working in poor light, and the pump has a maintenance-free, water-filled brushless DC motor in stainless steel. We supply the PS2-600 in the UK as authorised Lorentz sales and service partners, and we size every system with Lorentz's own selection software.
The PS2-600 has ten pump ends, and the price is the same whichever you choose. The three centrifugal ends (C-SJ) give 4.1 to 12 m³/h from lifts of 15 to 50 m. The seven helical rotor ends (HRE) lift from 50 m up to 180 m, at flows between 0.44 and 2.6 m³/h, and the HRE-03H is the deepest of them. Which one suits you depends on the depth of the water and the volume of water you need each day.
The PS2-600 costs £2,514.02 ex VAT, and the price is the same for every current pump end, centrifugal or helical rotor.
Which PS2-600 pump end do I need?
The three centrifugal pump ends cover heads from 15 m up to 50 m and flows from 4.1 to 12 m³/h. The seven helical rotor pump ends reach heads of up to 180 m, at flows between 0.44 and 2.6 m³/h.
| Pump end | Type | Max head | Max flow | Datasheet |
|---|---|---|---|---|
| C-SJ8-5 | Centrifugal | 15 m | 12 m³/h | C-SJ8-5 datasheet (PDF) |
| C-SJ5-8 | Centrifugal | 30 m | 6.5 m³/h | C-SJ5-8 datasheet (PDF) |
| C-SJ3-9 | Centrifugal | 50 m | 4.1 m³/h | C-SJ3-9 datasheet (PDF) |
| HRE-14 | Helical rotor | 50 m | 2.6 m³/h | HRE-14 datasheet (PDF) |
| HRE-10 | Helical rotor | 80 m | 2.0 m³/h | HRE-10 datasheet (PDF) |
| HRE-07 | Helical rotor | 90 m | 1.3 m³/h | HRE-07 datasheet (PDF) |
| HRE-04 | Helical rotor | 70 m | 0.72 m³/h | HRE-04 datasheet (PDF) |
| HRE-04H | Helical rotor | 140 m | 0.72 m³/h | HRE-04H datasheet (PDF) |
| HRE-03 | Helical rotor | 120 m | 0.44 m³/h | HRE-03 datasheet (PDF) |
| HRE-03H | Helical rotor | 180 m | 0.45 m³/h | HRE-03H datasheet (PDF) |
Figures are the maximum for each pump end, from the current Lorentz datasheets (version 310270). The "H" ends are the high-head versions.
PS2-600 controller and solar array
The controller handles up to 0.70 kW and accepts up to 150 V from the array, with a motor current of up to 13 A. It needs a maximum power voltage above 68 V, so the panels are normally wired in series strings. It is rated IP68 and works in ambient temperatures from -40 to 50 °C, and the pump can handle water up to 50 °C. The controller has inputs for dry running protection and remote control, and it is protected against reverse polarity, overload and over-temperature.
The PS2-600 can also run from a battery, with a built-in low voltage disconnect, although about 99% of the pump systems we supply run direct from the panels with no battery. The controller is roughly 350 mm high, 207 mm wide and 124 mm deep, and weighs 4.1 kg. The pump unit, which is the motor and pump end, weighs between 11 and 13 kg depending on the pump end. The size of the array depends on the pump end, the head and the volume of water you need each day.
What is included, and what you need to add
The PS2-600 price covers the controller and the pump unit, which is the motor and your chosen pump end. You will also need solar panels and mounting, a rising main and a storage tank, and we can quote for the panels and mounting as well. Cable between the controller and the pump is supplied if you need it, and is quoted by length. Sensors are optional extras. The Lorentz PS2 installation manual is available to download as a PDF.
Pump sizing with Lorentz software
Sizing is free. We size every pump with Lorentz's own selection software, using the details you give us, and the result is an estimate of performance based on that data. It is not a guarantee of output. We supply the equipment, and the installation is carried out by you or your installer.
To size your pump we need the borehole depth and internal diameter, the water level, the height the water must be lifted to and how far it travels, and the volume of water you need each day. Send those details through our solar pump enquiry form. For more on choosing a pump, see our guide to solar borehole and well pumps.
PS2-600 solar pump FAQs
How deep can a PS2-600 pump?
Up to 180 m with the HRE-03H pump end, which delivers about 0.45 m³/h at that lift. The centrifugal ends are for shallower water and larger flows, up to 12 m³/h at 15 m.
Does the pump end change the price?
No. The PS2-600 is £2,514.02 ex VAT with any of its ten pump ends, so the choice comes down to your site rather than your budget.
Should I choose the PS2-600 or the PS2-1800?
The PS2-600 suits smaller flows and deeper lifts from a compact system. If you need more than 12 m³/h, or a wider choice of pump ends, look at the PS2-1800, which delivers up to 53 m³/h. For lifts of 50 m or less and smaller flows, the PS2-200 may be enough.
Do I need batteries for the PS2-600?
Usually not. The pump runs directly from the panels, so output is highest in summer and lower in winter, and most systems pump into a storage tank that supplies water when the sun is down. The Lorentz controllers can also run from batteries if you need water outside daylight hours.
Tell us your borehole depth, water level and daily water demand, and we will size the pump and pump end with Lorentz's selection software before we quote.
