VASCO Solar - Variable Speed Controller
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V^riableSpeedCOntroller Solar The inverter for solar pumping applications

VASCO Solar - VAriable Speed COntroller inverters are designed to power traditional pumping systems using solar energy. This way it is possible to convert old systems into renewable energy installations or to use the same AC pumps to create independent, cost-saving and environmentally sustainable water systems. The device is able to convert DC voltage coming from solar panels into AC voltage for powering any pump driven by a three-phase motor. Pump speed is constantly adapted to available solar irradiation thus maximising the amount of pumped water and making possible operation even in...

VASCO Solar - VAriable Speed COntroller can be used with any type of traditional AC pump, thereby offering maximum flexibility in several areas of application. When using surface pumps, device can be used for an irrigation system drawing water from a nearby water supply, or powering a pool pump at no cost. When using submersible pumps, it is possible to fill tanks for watering livestock or simply irrigate lawns or crops. The inverter, in MP (MultiPower) version, can be powered in DC by solar panels or in AC by network or generator to ensure the functioning of the pump at any hour of the...

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. Monitoring parameters The inverter is...

It is possible to connect: ■ An alarm ■ A motor run/stop signal ■ A pressure sensor or a flow sensor for monitoring ■ Up to four digital inputs for pump start and stop (float switch, level sensors, etc.) ■ Modbus RTU The device is able to protect the pump against overload and dry running. Dry running protection is performed by monitoring the motor’s power factor and therefore probes are not required. The device also protects itself against surges and overheating.

The pumping system must be designed taking into account the required daily flow rate, total head and the installation site. In particular, the choice of the pump must be made considering the average daily solar irradiation. Once the appropriate pump has been identified, it is necessary to know: ■ Rated pump power (P2) ■ Electrical motor power (P1). P1 can be derived by dividing P2 by motor efficiency. ■ Rated motor current ■ Rated motor voltage 3 x 230 VAC or 3 x 400 VAC The inverter model to be used is determined by considering voltage and rated motor current. To ensure maximum...

* AC power available only for MP (MultiPower) models. ** Input voltage necessary to obtain 100% of rated motor power. *** Typical motor power. It is recommended to refer to the rated motor current when selecting the VASCO Solar - VAriable Speed COntroller model. Electrical characteristics ■ Rated ambient temperature: -10 to 50°C (14 to 122°F). ■ Operating temperature: -10 to 60°C (14 to 140°F). ■ Max altitude at rated current: 1000 m. ■ Protection degree: IP66 (NEMA 4X) (Size 2), IP54 (NEMA 12) (Size 3, 4). ■ Digital outputs configurable as N.O or N.C: 4. 4-20 mA or 0-10 VDC ■ 4 digital...

Nastec srl Via della Tecnica 8 36048 Barbarano Mossano Vicenza - Italy tel +39 0444 886289 fax+39 0444 776099 info@nastec.eu GR000840_rev4 11.2019 Nastec reserves the right to modify the technical features contained in this document without notice.