The most compact and reliable solution
for solar pumping applications
NERA solar pumps have been
developed to meet the needs of low-power
and low-cost pumping systems
without sacrificing quality, reliability and performance.
Nastec Srl Unipersonale
Via della Tecnica 8
36048 Barbarano Mossano
Vicenza – Italia
t. +39 0444 886289
f. +39 0444 776099
p.iva & c.f. 03392100248
c.s. 250.000€ i.v.
info@nastec.eu
pec@pec.nastec.eu
About us
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NERA 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 it’s lubricated by the pumped water. The flow rate is directly proportional to pump speed while the pres-sure 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 irradiation. In addition, the helical rotor pumps feature higher hydraulic efficiency than centrifugal pumps of same flow.
This saves in the number of PV panels necessary for the application.
To connect NERA to the solar system, the STOP MODULE device is available as an accessory. It is equipped with:
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 irradation falls below a minimum level necessary to ensure operation.
