A world of movement & opportunities for big wind turbines LINAK ® knows the market, and LINAK knows the opportunities wind turbine manufacturers have for using LINAK solutions. In cooperation with our customers we have developed solutions for service situations with automatic opening of all sorts of access gates, hatches and emergency lubricating systems. Electric actuators are also used for a number of safety applications like rotor brakes, rotor locks, wing locks and ventilation systems in both the nacelle and the transformer unit. Access hatch Hatches that are opened electrically provide fitters and technicians with easier access. At the same time, it can be a safety precaution to avoid unintended access. 4

Rotor lock The actuator solution is very powerful, and therefore very suitable for rotor lock applications. The service technicians can lock the rotor electrically. Natural ventilation/cooling LINAK actuator solutions ensure natural ventilation of the nacelle to keep the usage of the costly air cooling system at a minimum. By means of sensors the hatches will be closed if it snows or rains. A variety of feedback systems can be mounted on the actuator to make sure that the wind turbine control systems know whether the systems are on or off. 5