Roebel bar for an electric machine and manufacturing method of such a roebel bar

摘要

A Roebel bar (10) for an electrical machine comprising a plurality of substantially parallel, transposed conductor elements (11, 12, 13) adjacent to each other form above and / or a rod having a substantially rectangular cross-section, the outside of the (with an insulation 19) is surrounded and (between the insulation 19) and the partial conductors (11, 12, 13) means (14, 14 '; 15, 15'; 17, 18) for forming an internal corona (IGS) has. In such a Roebel bar a particularly effective internal corona-discharge is achieved in that the Innenglimmschutzmittel preformed comprise angled profiles (17, 18) of an electrically conductive material, which in the longitudinal direction of the Roebel bar (10) extending the edges of the (from the sub-conductors 11, 12 rod, 13) formed surround, and to which the insulation (19) is applied.