Lorentz PS2-200 Solar Borehole Pump and Controller

Lorentz PS2-200 Solar Borehole Pump: Centrifugal and Helical Rotor Options

The Lorentz PS2-200 is a 0.3 kW solar submersible pump and controller for boreholes and wells of 4 inches (100 mm) or larger, aimed at modest volumes of water lifted from 20 to 50 m. It suits livestock watering, irrigation and drinking water where there is no mains power. The controller accepts an array of up to 100 V, so ordinary panels can be wired in a short series string. 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 PS2-200 in the UK as authorised Lorentz sales and service partners, and we size every system with Lorentz's own selection software.

There are five PS2-200 pump ends. The one centrifugal end (C-SJ3-9) gives the most water, up to 3.3 m³/h at 35 m. The four helical rotor ends (HRE) trade flow for lift: the HRE-14 gives 2.6 m³/h at 20 m, and the HRE-04 reaches 50 m at 0.73 m³/h. The right one depends on how far down the water is and the volume of water you need each day.

The PS2-200 costs from £1,991.84 ex VAT with a helical rotor (HRE) pump end, and from £2,000.24 ex VAT with the centrifugal pump end.

Which PS2-200 pump end do I need?

The centrifugal pump end gives up to 3.3 m³/h at heads up to 35 m. The four helical rotor pump ends reach heads of up to 50 m, at flows between 0.73 and 2.6 m³/h.

Figures are the maximum for each pump end, from the current Lorentz datasheets (version 310270).

PS2-200 controller and solar array

The controller handles up to 0.30 kW and accepts up to 100 V from the array, with a motor current of up to 11 A. It needs a maximum power voltage above 34 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 PS2-200 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 12 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 PS2-200 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.

PS2-200 solar pump FAQs

How much water can a PS2-200 deliver?

Up to 3.3 m³/h with the C-SJ3-9 at 35 m, and less at greater lifts. Output also changes with the sunshine, and our sizing gives you an estimate for your site.

What is the difference between the PS2-200 and the PS2-150?

Both have 0.3 kW controllers. The PS2-200 accepts up to 100 V from the array, while the PS2-150 is the lower voltage option, up to 50 V, with higher flow centrifugal ends.

What if my water is deeper than 50 m?

The PS2-200 reaches 50 m at most. For deeper water the PS2-600 reaches 180 m, and the PS2-1800 and PS2-4000 go deeper still.

Do I need batteries for the PS2-200?

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.