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Westwind - 20kW Wind Turbine                                  

Westwind Wind Turbines are based in Northern Ireland, (they were formerly of Perth Australia)  manufacturers of 3kW, 5kW, 10kW & 20kW wind turbines suitable for both on and off grid installations. The turbines are built to a high standard and finish which is not always found in the small turbine  market. The majority of  components are manufactured in the vicinity of the site which cuts out supply problems, it is also better in terms of environmental costs.  Westwind wind turbines have three blades, up-wind of the tower with a horizontal axis attached directly to a sealed permanent magnet generator. Having no gearbox has advantages in terms of less moving parts to wear and less friction to reduce the efficiency of the blades. This gives an earlier start-up in light winds; more power is produced and less maintenance than those turbines using gearboxes.


The 10kW and 20kW (nominal) turbines are available on monopole towers ranging from 15 - 24m, they would suit a number of applications such as:

SYSTEM

Type:                              3 Phase Grid Connected

Configuration:                  Horizontal Axis

Rotor Diameter:               10 m (32.8 ft.)

Centreline Hub Height:     15, 18, 24 and 30 m (49.2, 59.0, 78.7 and 98.4 ft.)

 

PERFORMANCE PARAMETERS

Rated Electrical Power:  20 kW @14 m/s (25.3 mph)

Wind Speed Ratings:    

Cut-in:                          3 m/s (10.2 mph))

Shut-down (high wind):  18 m/s ( 61 mph)

Design speed:                60 m/s (134 mph)

Calculated Annual Output @ 100 % availability:

                                   5.4 m/s (12 mph) 22,660 kWh

                                  6.7 m/s (15 mph) 48,260 kWh

                                  8.0 m/s (18 mph) 82,630 kWh


ROTOR

Type of Hub:                Passive Pitch Control

Rotor Diameter :          10 m (32.8 ft.)

Swept Area:                100 m² (1076 ft²)

Number of Blades:        3

Rotor Solidity:             0.05

Rotor Speed @ rated wind speed:  160 rpm nominal (variable)

Location Relative to Tower:          Upwind

Cone Angle:   0º

Tilt Angle:     6º

Rotor Tip Speed:  84 m/s (188 mph) @ 160 rpm

Design Tip Speed: 6

BLADE

Length:            5 m (16.4 ft.)

Material :         Carbon and glass fibre reinforced plastic

Blade Weight : 25 kg (330 lbs.) approximate

   

GENERATOR

Type:           3 phase/36 pole synchronous

Frequency :  50 Hz variable

Voltage :      3 phase @ 50 Hz, 240-380 VAC

kW @ Rated Wind Speed  20 kW

kW @ Peak Continuous  25 kW

Insulation:    Class F

Enclosure:    Totally Enclosed Air Over

Options:       Arctic low temp -40°c

   

YAW SYSTEM

Normal:    Free, passive

Optional:  Furl damp

Electrical: Slip ring brush set

   

TOWER

Type:               Free standing galvanized monopole

Tower Height:  15/18/24/30 m

Options:           Towers with guy wires & gin pole


FOUNDATION

Type:  Concrete pads

   

CONTROL SYSTEM

Type:  Electronis, passive pitch regulation and passive side furling

   

ROTOR SPEED CONTROL

Running:       Passive pitch regulation

Start up:      Aerodynamic

Shut-down : Aerodynamic and manual furling

APPROXIMATE SYSTEM DESIGN WEIGHTS

Tower Monopole:     2700 kg (10,000 lb.)

Rotor & Drive train:  920 kg (5,340 lb.)

   

DESIGN LIFE

25 Years


DESIGN STANDARDS

Designed in accordance with:

   98/37/EC The Machinery Directive,

   73/23/EEC The Low Voltage Directive

   89/336/EEC The Electromagnetic Compatibility Directive

Applicable Standards:

   BS EN 60204-1:1998

   BS 5559:1991

   BS EN 61293:1995

   BS 3535:1990

   BS EN 60439:1994

   BS EN 60447:1994

   BS EN 60073:1997

   BS EN 61000-6-2:1999

   BS 60034

   BS EN 61400-2:2006


DOCUMENTATION

Installation Guide and Operation & Maintenance Manual


SCHEDULED MAINTENANCE

Semi-annual or after severe events.