nera 4h– low wattage solar orehole...
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NERA 4H– Low Wattage Solar Borehole Pumps
PUMP
The NERA range of low flow submers ible pumps is particularly suited for low yielding wells where water can be pumped out
continuously at low flows. The range consists of a helical rotor pump suited for low flow high head boreholes and a centrifu-
gal pump suited for low head higher yielding boreholes.
MOTOR
One size of the unique 800W Nastec high efficiency permanent magnet motor is specified with both pump types. The motor
is powered by DC voltage within the range of 70-190V DC. The integrated inverter unit uses Maximum Power Point Tracking
(MPPT) technology that continuously optimises output frequency to maximize system efficiency and protects against over
and under voltage, electrical overload and over temperature. Dry running protection is provided by an integrated water level
sensor.
Helical Rotor
pump
Centrifugal
Pump
Motor
+
Inverter Unit
Model Voltage Max absorbed
current (A)
Max absorbed
power P1 (Watts)
Height Pump
Outlet
Diameter
mm
Weight
Kg
NERA 02/01H 70-190 VDC 10 800 890 1⅟₄" 99 11
NERA 06/04 70-190 VDC 10 800 520 1½" 99 9