Abstract: A wind turbine is provided including a wind rotor with blades and a generator including a rotor connected to the wind rotor, and a stator, where a sliding pad is connected to the stator and is positioned such if the rotor tilts more than a critical angle relative to the stator it contacts the sliding pad. A method to protect the generator is also provided.

Abstract: A damage assessment arrangement for assessing the extent of damage to a lightning receptor electrically connected to a down conductor of a wind turbine rotor blade includes a measurement pulse module including a pulse generator arranged to transmit a pulse into one end of the down conductor and a return signal detector arranged to detect the return signal; a return signal analysis module configured to determine the extent of alteration of the return signal relative to an expected return signal; and a damage estimation module configured to relate the relative extent of alteration to a measure of damage to rotor blade LPS. The following further describes a wind turbine with such a damage assessment arrangement; and a method of assessing the extent of damage to a rotor blade LPS.