4HS MultiPower
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4” submersible pumps powered by renewable energy sources

4HS MultiPower pumps can be powered by AC or DC with a wide range of operating voltage (90 - 265 VAC / 90 - 400 VDC). This means that 4HS MP pumps can be connected to solar panels, batteries, wind turbine and a diesel generator. A special software algorithm allows for adjusting the hydraulic performance to each source and to the available power while maximising the amount of water pumped. The built-in electronics inside the motor avoid the use of shielded cables and output filters, and it is the ideal solution for any application in remote locations without surveillance and climatically...

4HS MultiPower pump can be installed with CM MultiPower control module or without it, thus becoming a “plug and pump” system. If the CM MultiPower control module is not used, signal cables can be used to control pump start and stop, connecting a float switch, for example. All the protections against overload, surges and dry running are integrated into the on-board inverter. If the signal cables are connected to the CM MultiPower control module, it is possible to: ■ Control the electric parameters (current, power, voltage). ■ Record and store all the alarms related to the working hours. ■...

Based on the varying conditions of solar irradiation and temperature, MPPT (Maximum Power Point Tracking) maximises the electrical power drawn from the panels and therefore the amount of water pumped. The greater the solar irradiation the faster the pump’s rotation speed, and consequently water flow increases. When solar irradiation decreases (due to clouds or the different times of day), the pump reduces frequency and therefore the flow, but it continues to provide water until the irradiation falls below a minimum level necessary to ensure operation. Centrifugal pump ■ Impellers and...

The helical rotor pump 4HS “H” pumps are equipped with a helical rotor that moves within a double-helix rubber stator. The rotor is made of AISI 304 stainless steel and coated with a hard chrome surface. During operation, the rotor moves on the rubber surface and is lubricated by the pumped water. The flow rate is directly proportional to the pump speed while the pressure supplied is kept almost constant. In this way, unlike a centrifugal pump, the helical rotor pump provides high head even at low rpm, ensuring water on surface even with very low available power or low solar irradiation. In...

For the correct selection of a 4HS MultiPower pump to be used in a photovoltaic system, it is necessary to know: ■ Desired daily water quantity ■ Total dynamic head ■ Installation location Based on location it is possible to calculate average daily radiation [kWh/m2/day]. Average daily radiation can then be considered as the number of hours the pump works with 1 kW/m2, the value of reference for defining solar panel performance. Dividing the required water quantity by the hours, nominal flow is calculated and, in addition to the required head, the right pump can be selected. Max external...

Power Max factor power Discharge Pump weight Packing dimensions Total weight * Max external diameter including cable and cable cove

P1 [W] CM MultiPower installation is recommended for points of operation on the dashed lines. Model Power Max factor power Packing dimensions Total weight Pump weight * Max external diameter including cable and cable cove

Max external diameter including cable and cable cover

4HS MultiPower pump can be installed both vertically and horizontally, as long as the outlet is never lower than the horizontal axis. To ensure proper cooling if 4HS is not installed in a 4” well, it is necessary to use a cooling sleeve.

Nastec srl Via della Tecnica 8 36048 Barbarano Mossano Vicenza - Italy tel +39 0444 886289 fax+39 0444 776099 info@nastec.eu GR000820_rev4 12.2019 Nastec reserves the right to modify the technical features contained in this document without notice.