Abstract: An electric machine excited by a permanent magnet, particularly a larger generator of a wind power station, is to be produced and assembled easily. According to the invention, magnetic modules (1) are provided. A rotor can be equipped, for example, with said magnetic modules. Each magnet module (1) comprises a carrier plate (4) for fastening to the rotor, at least one permanent magnet (3), which is disposed on the carrier plate (4), and a covering device (2). The at least one permanent magnet (3) is fastened to the carrier plate (4) such that it is located between the carrier plate (4) and the covering device (2). Advantageously, these magnetic modules (1) can be easily installed or replaced in the gap between the rotor and stator.

Abstract: The aim of the invention is to improve the electrical and mechanical properties of a litz wire conductor (1) for coils of electric machines. For this purpose, the interstices between the filaments (3) of a conductor (1) are filled with an elastic potting compound (4). In order to allow for more regular marginal field intensities in the circumferential area, the potting compound (4) can be electrically conducting. For filling the interstices, the individual filaments (3) can also be provided with a coating which accelerates curing of the steeping agent.