Wind
Location
Blue Sky Green Field is located in the towns of Calumet and Marshfield in northeastern Fond du Lac County, east of Lake Winnebago.
Type of plant
Wind turbine
Initial cost
Approximately $300 million
Units
88 turbines
Year in service
2008
Net generating capacity
1.65 megawatts each – 145 megawatts total
Turbine manufacturer
Vestas Wind Systems
Turbine design
Vestas V82 is a horizontal axis, pitch-regulated, upwind turbine.
Total weight
Tower and turbine: 204 tons
Rotor design
Three blades constructed of a fiberglass-reinforced epoxy coating around a wood/carbon fiber frame.
Rotor diameter
82 meters (269 feet)
Rotor speed
14.4 rpm
Generator
An asynchronous 6-pole, 3-phase induction generator with wound rotor and full-load reactive power compensation.
Generator nominal voltage
600 volts, 3-phase
Integrated lightning protection
Protection system includes lightning receptors and conductors in the rotor blades, lightning arrestors, deep earth grounding and shielding.
Control system
A microprocessor controls all turbine functions.
Tower dimensions
Hub height: 262 feet
Weight:: 140 tons
Base diameter: 13.8 feet
Rated power output: 1.65 MW @ 30 mph
Cut-in wind speed
8 mph
Cut-out wind speed
54 mph
Extreme gust wind speed
133 mph
Questions
Call us
Customer service: 800-242-9137 (24 hours a day)
Updated: December 2012
