CF 20

CF 20 Overview

CF20-SummaryThe CF20 generator is a radial flux, permanent magnet, air-cooled generator which has been developed in-house by C&F. Although costly to manufacture, this type of generator affords significant advantages in terms of efficiency and reliability. Rated power of 20kW is realised at 80 rpm, and this represents only 75% of its available capacity. These generous margins limit operating temperatures and increase the lifespan of the unit. The coils are individually encapsulated in a moulded cover, which gives significant protection from the elements and from the ingress of debris. Widely deployed in extreme environments for several years, this wind turbine generator has shown itself to be a robust design of optimal efficiency.

The active blades pitch protects the turbine and optimises aerodynamic performance during the fiercest of operating conditions. . In extreme winds, the blades can be feathered 90 degrees out of the wind which greatly reduces the wind load on the blades and turbine.  The blade pitching mechanism also serves as a very effective emergency brake.

Active yaw control a purpose built microprocessor monitors the wind vane and the anemometer on all C&F turbines. This directs the yaw or slew motor, allowing the turbine to be optimally aligned to the wind. Not only does this improve efficiency but it reduces fatigue loading on the turbine.

Remote monitoring through our in-house designed GSM controller ensures your turbine is always performing to its optimum, giving you piece of mind that your investment is continuously working for you.

Our unique hydraulic tilt lift system allows for easy access for maintenance and service.

CF20 Main Features

  • Approved by MCS and Intertek
  • Certified AEP @ 7m/s of 79,191kWh
  • Ideal turbine for average wind speeds up to 5.0 m/sec.
  • Low cut-in wind speed, of 2.2m/sec.


Rotor Diameter 13.1m
Rotor Swept Area 134.8 m
Number of Blades 3
Hub Height 20m
Max Power 20 kW (can be restricted)
Rated wind speed 9.0 m/sec.
Wind Class III (Vave = 7.5 m/s)
Survival wind speed 60 m/sec.
BWEA Sound Level 45 dBA
Cut in wind speed 2.2 m/sec.
Cut out wind speed 25 m/sec.
Rotor Speed Range 0-85rpm (normal operating range)
Installation Method Hydraulic Tilt Lift
Certified AEP (kWh) 5 m/s =41324, 6 m/s =61284, 7 m/s = 79191, 8 m/s = 94011, 9m/s = 105414.