Wind turbine comprising a generator directly driven by a wind rotor comprising a rotor hub and at least one blade, a tower, a supporting frame mounted on the tower and a slip ring unit arranged for providing electrical power to devices installed in a wind turbine rotating part and/or for transferring electrical signals to/from said devices, the rotor hub and the generator stator being supported by a non-rotating shaft attached to the supporting frame, said slip ring unit being mounted on a front end of the non-rotating shaft along the centre axis of the rotor hub and having a rotating part (55, 63) connected to a rotating wind turbine component and a static part (51, 65) connected to a non-rotating wind turbine component, the rotating part (55, 63) comprises a rotatable shaft connected to the rotating wind turbine component such that the rotatable shaft rotates within the static part (51, 65) of the slip ring unit, characterized in that: the slip ring unit is detachably mounted on the front end of the non-rotating shaft by means of a first connector and a second connector; the first connector connects the rotatable shaft of the rotating part (55, 63) of the slip ring unit to the rotating wind turbine component such that the rotatable shaft rotates within the static part (51, 65) of the slip ring unit; the second connector connects the static part (51, 65), within which the rotating part (55, 63) of the slip ring unit rotates, to the front end of the non-rotating shaft; and in that said second connector is a bracket that enables supporting the static part (51, 65) on the front end of the non-rotating shaft. the rotating part (55, 63) comprises a rotatable shaft connected to the rotating wind turbine component such that the rotatable shaft rotates within the static part (51, 65) of the slip ring unit, characterized in that: the slip ring unit is detachably mounted on the front end of the non-rotating shaft by means of a first connector and a second connector; the first connector connects the rotatable shaft of the rotating part (55, 63) of the slip ring unit to the rotating wind turbine component such that the rotatable shaft rotates within the static part (51, 65) of the slip ring unit; the second connector connects the static part (51, 65), within which the rotating part (55, 63) of the slip ring unit rotates, to the front end of the non-rotating shaft; and in that said second connector is a bracket that enables supporting the static part (51, 65) on the front end of the non-rotating shaft. the slip ring unit is detachably mounted on the front end of the non-rotating shaft by means of a first connector and a second connector; the first connector connects the rotatable shaft of the rotating part (55, 63) of the slip ring unit to the rotating wind turbine component such that the rotatable shaft rotates within the static part (51, 65) of the slip ring unit; the second connector connects the static part (51, 65), within which the rotating part (55, 63) of the slip ring unit rotates, to the front end of the non-rotating shaft; and in that said second connector is a bracket that enables supporting the static part (51, 65) on the front end of the non-rotating shaft.