Libellula - Model 60i - Wind Turbine
Libellula 60i is the best performing turbine amongst the Libellula series. In this model the converter group has been replaced by a last generation inverter (Made in Italy). This feature improves the turbine’s power output up to 60 kW. Libellula 60i is today one of the small wind turbines in the market with the best cost-performance ratio.
Product Details
Italian quality small wind turbines
LIBELLULA wind turbines are 100% made in Italy. They are produced with high quality components and the best engineering standards. Designed to achieve minimum cost per kWh of produced energy, LIBELLULA wind turbines grant the same reliability of big size wind turbines. They are conceived as large, high-power industrial installations: equipped with aactive yaw system with gear motor, professional wind direction and wind speed sensors, they stand on a load-bearing tubular tower with internal ladder. They benefit of long term skills developed in Northern Europe, but also of patents and ideas originated from the technical research carried out at Aria’s facilities. The choice of first quality industrial, instead of custom, components makes them reliable and long lasting: industrial spare parts are always available on the market and can be quickly delivered.
The Best Performance
LIBELLULA 60i is the best performing turbine amongst the Libellula series. In this model, the converter group has been replaced by a last generation inverter (Made in Italy). This feature improves the turbine’s power output up to 60kW, granting an unbeatable cost-performance ratio.
- EN 61400-1 certification: certified design and safety
- Verified Power Curve: guaranteed performance
- Verified Noise Levels: respect of environmental limits
- Man-Sized Nacelle: simple and safe maintenance
- Tower With Internal Ladder: maintenance in bad weather conditions
- High Quality Components: high reliability
- 2 Bladed Rotor: simple and cheap installation
- Asynchronous Generators: standard and robust components
- Patented Converter System: innovation
Long Lasting and Reliable
With 1.300.000 working hours corresponding to 150 years of service, LIBELLULA 60i and LIBELLULA 50-55kW have proven to be reliable and robust in many installations through the years, achieving high energy production with great cost-performance ratio.
Cheap and Simple O. & M.
One the most interesting characteristics of LIBELLULA is that it allows cheap and safe O.& M. even in case of bad weather conditions. This is due to certain technical features such as the two bladed rotor, the spacious man-sized nacelle and most of all the tubular tower which is provided with internal ladder with direct access to the nacelle. Furthermore the 2 bladed rotor reduces installation costs because the nacelle can be assembled on the ground and lifted up with only one crane. The above characteristics maximize the turbine’s working hours and minimize stops.
Certification
- Amongst small sized wind turbines LIBELLULA received important recognitions of its performances.
- Power Curve Measured and Verified by RSE spa according to IEC Standard ( EN 61400-12-1 - EN 61400-2)
- EN61400-1 certification
- Patent n.1393324: Libellula 55 converter system
- Due diligence Report Nomisma Energia: Libellula 60i
Technical Specifications:
General:
- Turbine type: HAWT
- Wind class: IIIA
- Cut-in wind speed: 3 m/s
- Nominal wind speed: 11 m/s
- Cut-out wind speed: 25 m/s
- Extreme wind speed: Ve50 = 52,5 m/s
- Generator nominal power: 55kW
- Max Power: 59.9kW
- Nominal voltage: 400V ±10% 3 ph 50Hz
Rotor:
- Number of blades: 2
- Diameter: 18m - 19m
- Rotational speed: variable 30 - 95 rpm
Generator:
- Generator type: asynchronous - 4 poles
- Nominal power: 55 kW
- Nominal voltage: 400 V
Power Converter:
- Converter type: inverter
- Conversion principle: AC-DC-AC
- Grid connection: transformer
- Nominal voltage: 400 V
- Frequency: 50 Hz
Tower:
- Tower type: cylindrical pipe
- Number of sections: 2 or 3
- Hub height: 19m - 25m - 31m
- Material: hot dip galvanised steel
- Location ascent: internal
Control System:
- Remote control: Yes
- Yawning system: active
- Yawning motor: n. 1
- 1° safety system: passive blade pitch
- 2° safety system: yawning out of the wind
Weights:
- Rotor: 900 kg
- Nacelle including rotor: 2.900 kg
- Tower without nacelle: 7.700 kg (H=31m)
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