Nastec-Nera

Nera Solar Pumps Overview

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.

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.

Centrifugal
pump

Encapsulated

electronics

The helical
rotor pump

Motor

 

Easy connection to pv panels and to a float

STOP MODULE

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.
Stop-module-Nastec-nera
Nastec-NERA-illustration-2

MPPT: always the maximum power available.

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.

MPPT

NERA Solar Pumps Technical Specifications

Performance

NERA 01/02H
Voltage 70 – 190 VDC
Max current 10 A
Max power P1 800 W
Length 930 mm
Discharge 1 1/4 “
Pump weight 11 Kg
Max diameter* 99 mm
Packing dimensions 77 x 21 x 26 cm
Total weight 13 Kg

* Max. external diameter including cable and cable cover

NERA 02/01H
Voltage 70 – 190 VDC
Max current 10 A
Max power P1 800 W
Length 890 mm
Discharge 1 1/4 “
Pump weight 10 Kg
Max diameter* 99 mm
Packing dimensions 77 x 21 x 26 cm
Total weight 12 Kg

* Max. external diameter including cable and cable cover

NERA 06/04
Voltage 70 – 190 VDC
Max current 10 A
Max power P1 800 W
Length 520 mm
Discharge 1 1/2 “
Pump weight 9 Kg
Max diameter* 99 mm
Packing dimensions 57 x 21 x 26 cm
Total weight 11 Kg

* Max. external diameter including cable and cable cover

General specifications

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

Materials

RIF Description Material
1 Power supply cable with removable connector for drinking water applications AISI 304 + ACS-KTM-WRAS compliant
3 E-Ring: Encapsulated inverter 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 304 cromato
30 Safety hook AISI 304
31 Flexible shaft AISI 316
32 Pump adaptor AISI 304
Nastec-NERA-materials-1-1
Nastec-NERA-materials-2