Lightning protection system for a wind turbine and wind turbine with a lightning protection system

A lightning protection system for a wind turbine, the wind turbine having an electrically grounded structure part, a main shaft electrically and mechanically connected therewith, a blade hub rotationally connected via a main bearing to the main shaft and a plurality of blades connected to the blade hub, the lightning protection system comprising:

• a down-conductor attachable inside one of the blades;
• a high voltage conductor for guiding lightning current, wherein a first end of the high voltage conductor is in electrical communication with the down-conductor;
• a high voltage contact attachable inside the main shaft, wherein a second end of the high voltage conductor is in electrical communication with the high voltage contact;
• and
• wherein a lightning current is guided from the down-conductor via the high voltage conductor to the high voltage contact.

A wind turbine, comprising:

• an electrically grounded structure part;
• a main shaft electrically and mechanically connected therewith;
• a blade hub rotationally connected via a main bearing to the main shaft;
• a plurality of blades connected to the blade hub;
• and
• a lightning protection system, comprising
• a down-conductor attachable inside one of the blades;
• a high voltage conductor for guiding lightning current, wherein a first end of the high voltage conductor is in electrical communication with the down-conductor;
• a high voltage contact attachable inside the main shaft, wherein a second end of the high voltage conductor is in electrical communication with the high voltage contact;
• and
• wherein a lightning current is guided from the down-conductor via the high voltage conductor to the high voltage contact.