The most compact and reliable solution for solar pumping applications

Encapsulated electronics

High-efficiency encapsulated inverter

MPPT for maximum flow in all weather conditions

Overload, overheating and dry-run protected

Removable power cable

Water level sensor

NERA solar pumps have been developed to meet the needs of low-power and low-cost pumping systems without sacrificing quality, reliability and performance.

For this reason, unique technological features are concentrated in NERA.

Centrifugal pump

Impellers and diffusers in AISI 304 stainless steel

Built-in no return valve

Motor

High efficiency permanent magnet motor

Resined and encap-sulated stator made of AISI 304stainless steel

Water-cooled rotor

Kingsbury thrust bearing

Helical rotor pump

Highest hydraulic efficiency

Hard chromed rotor

High quality EPDM stator

To connect NERA to the solar system, the STOP MODULE device is available as an accessory. It is equipped with:

MC4 connectors for fast and easy panels connection

Button for pump start and stop

Connection for float or pressure switch

Surge protection

Based on the varying conditions of solar irradiation and tem-perature, 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.

MPPT: always the maximum power available

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Pump selection

For the correct selection of NERA pump to be used in a photovoltaic system, it is ne-cessary to know:

Desired daily water flow

Total head

Installation location

Based on the location it is pos-sible to calculate average daily radiation [kWh/m2/day]. Ave-rage daily radiation can then be considered as the number of hours the pump works with

1 kW/m2, standard for defining solar panel performance. Divi-ding the required water quan-tity by the hours, nominal flow

LatitudeLongitude

Daily averageirradiance[kWh/m2]

1 kWh/m2

≈1h @ 1kW/m2

Q[m3/h] = Qd/ h

Daily delivery Qd[m3]Total head H [m]

is calculated and, in addition to the required head, the right pump can be selected.

For a full sizing of your solar pumping system, it is recommended using Nastec Solar Calculator (NSC) at:

solar.nastec.eu

NSCCalculator

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PerformanceNERA 01/02H

* Max external diameter including cable and cable cover

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NERA 02/01H

Model Voltage Maxcurrent

Maxpower

Length Discharge Pumpweight

Max diameter*

Packingdimensions

Total weight

NERA [VDC] [A] P1 [W] [mm] [kg] [mm] [cm] [kg]

01/02H 26 - 190 10 800 930 1 1/4 “ 11 99* 77x21x26 13

02/01H 26 - 190 10 800 890 1 1/4 “ 10 99* 77x21x26 12

PerformanceNERA 06/04

* Max external diameter including cable and cable cover

Model Voltage Maxcurrent

Maxpower

Length Discharge Pumpweight

Max diameter*

Packingdimensions

Total weight

NERA [VDC] [A] P1 [W] [mm] [kg] [mm] [cm] [kg]

06/04 26 - 190 10 800 520 1 1/2 “ 9 99* 57x21x26 11

Max liquid temperature 35 °C (92 °F)

Min liquid cooling speed 0.2 m/s

Characteristics of the pumped liquid clean, chemically not aggressive, not explosive, without solid and fibre content, with max 50 g/m3 sand content

Protection degree IP68

Maximum immersion depth 150 m

Materials Motor and pump in AISI 304 stainless steel

Cable Flat cable ACS - WRAS - KTM approved

Certifications CE

General specifications

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Ref Description Material

1 Power supply cable with removable connector for drinking water applications

AISI 304 + ACS-KTM-WRAS compliant

3 E-Ring: Encapsulatedinverter module

4 Cable guard AISI 304

5 Lower thrust bearing AISI 304

6 Rubber diaphragm EPDM

7 Lower bush SiC

8 Tilting disc AISI 304

9 Pads AISI420j

10 Carbon disc CTI25

11 Shaft with rotor AISI 431

12 Canned type stator AISI 304

13 Upper bush SiC

14 Upper thrust bearing Teflon

15 Ceramized sleeve AISI 304 + Ceramic

16 Mechanical seal SiC

17 Rotating sandguard NBR

18 Pump filter AISI 304

19 Pump bracket AISI 304

Centrifugal pump

20 Diffusers AISI 304

21 Impellers AISI 304

22 Pump shaft AISI 304

23 Discharge AISI 304

24 Straps AISI 304

Helicoidal rotor pump

25 No-return valve AISI 304

26 Helicoidal stator EPDM + AISI 304

27 Supporting pipe AISI 304

28 Junction AISI 304

29 Helicoidal rotor AISI 316 cromed

30 Safety hook AISI 304

31 Flexible shaft AISI 316

32 Pump adaptor AISI 304

Materials

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Nastec srlVia della Tecnica 836048 Barbarano Mossano Vicenza - Italy

tel +39 0444 886289fax +39 0444 776099info@nastec.eu

nastec.eu

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Watertorque GroupAddress: Lot 1 Brand Highway Muchea WA 6501

Phone: (08) 9195 0351Email: nastec@watertorque.com.au