Slip Ring Bridge, Slip Ring Unit, Electrical Machine And Wind Power Installation

Abstract

In summary, the invention relates to a brush bridge and to a slip ring unit and also to an electrical machine and a wind power installation comprising a brush bridge of this kind in each case. The brush bridge comprises segments (1) which are preferably designed as metal plates which are shaped in the form of an annular segment. The segments serve for providing and for fastening slip ring brushes (12) which are each positioned in holding apparatuses (7). The segments (1) are connected to one another in parallel by insulation segments (3). The insulating segments (3) have a shield (33) in their interior, wherein the shield (33) is insulated with respect to the segments (1). The shield (33) is connected to a constant electric potential. The insulation of the segments (33) from one another to prevent uncontrolled charge exchange can be improved with the aid of the shield (33). In order to further improve the insulation, spacers (5) are positioned between the segments (1), wherein the spacers (5) are preferably arranged around the insulating segments (3) and preferably have embossed portions (5a) for extending the creepage distance.

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