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NERA

Product catalog summary

Overview: The document presents NERA solar pumps, designed for low-power and low-cost pumping systems without compromising on quality, reliability, and performance. Key features include encapsulated electronics, high-efficiency inverters, and MPPT for optimal flow in varying weather conditions.

Specifications: NERA pumps feature a centrifugal pump with AISI 304 stainless steel impellers and diffusers, a built-in no-return valve, and a high-efficiency permanent magnet motor. The motor includes a resined and encapsulated stator, water-cooled rotor, and Kingsbury thrust bearing. The helical rotor pump offers high hydraulic efficiency with a hard chromed rotor and high-quality EPDM stator.

Accessories: The STOP MODULE device facilitates connection to the solar system, featuring MC4 connectors, a start/stop button, and surge protection.

MPPT Technology: MPPT maximizes electrical power from solar panels, adjusting pump speed based on solar irradiation to maintain water flow.

Pump Selection: Selecting the correct NERA pump requires knowledge of desired daily water flow, total head, and installation location. The Nastec Solar Calculator (NSC) is recommended for full system sizing.

Performance Data: Performance graphs and tables provide detailed specifications for various NERA models, including voltage, current, power, dimensions, and weight.

General Specifications: NERA pumps are made from AISI 304 stainless steel, with a maximum liquid temperature of 35°C and a minimum cooling speed of 0.2 m/s. They are IP68 rated and can be submerged up to 150 meters.

Materials: The document lists materials used in the pump construction, emphasizing durability and compliance with standards.

Contact Information: Nastec srl, located in Vicenza, Italy, provides contact details for further inquiries.

Catalog excerpts

The most compact and reliable solution for solar pumping applications

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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. ■ Impellers and diffusers in AISI 304 stainless steel ■ Built-in no return valve 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

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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 High efficiency permanent magnet motor ■ Resined and encapsulated stator made of AISI 304 stainless steel

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MPPT: always the maximum power available Imp Isc 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....

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Max external diameter including cable and cable cover

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Nastec srl Via della Tecnica 8 36048 Barbarano Mossano Vicenza - Italy tel +39 0444 886289 fax+39 0444 776099 [email protected] GR000830_rev3 06.2019 Nastec reserves the right to modify the technical features contained in this document without notice.

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