Patent ID: 7651320
Filing Date: 2010-01-26
Classification: F03D,H02G,Y02E

Abstract:
1. A method of lightning-proofing a blade ( 1 ) of a wind-energy plant, which blade comprises a blade shell ( 2 ) configured essentially as one or more fiber-reinforced laminate parts ( 7 ; 18 ), said laminate parts comprising electrically conductive fibres ( 21 ), wherein the blade comprises at least one lightning arrester ( 9 ) configured for conducting lightning current, including preferably to ground, characterized in that at least a number of electrically conductive fibres within the same laminate part are connected to each other by electrically conductive means ( that at least one metallic receptor ( that the receptor is connected to the lightning arrester; and that a number of the electrically conductive fibres within the same laminate part are via the electrically conductive means connected to the lightning arrestor for equalizing the difference in potential between the lightning arrester and the electrically conductive fibres wherein at least one essentially massive first connecting element ( 11 ) of metal is arranged internally in the blade on top of the electrically conductive means and in electrically conductive connection there with, said connecting element being connected to the lightning arrester.