Alstom Technology Limited

Abb Research Ltd.

J&ouml;rg Sopka

Johann Christoph Nienburg

Thomas Baumann

Josef Wittmann

Gunter B&ouml;rner

The invention discloses a process for producing a high-quality insulation on a conductor or conductor bundle of rotating electrical machines, in which, in successive immersion passes in a fluidized-bed sintering tank, internal corona-discharge protection, insulation and external corona-discharge protection are applied, in each case with layer thicknesses of &lE;0.2 mm. The sintering and curing take place at temperatures of approx. 200&deg; C., so that it is possible to use materials which satisfy the demands which are imposed on the insulation of conductors or conductor bundles of this type for rotating electrical machines. Furthermore, the production process, in particular the layer thickness selected for the individual layers, ensures that the individual layers are free of defects, so that it is impossible for there to be any partial discharges, which would otherwise lead to damage to the insulation.

Method for producing a high-quality insulation of electrical conductors or conductor bundles of rotating electrical machines by means of fluidized-bed sintering

A powder-spraying apparatus having simultaneous internal and external charging, which is suitable for electrostatic powder coating. In order to achieve improved constancy of the deposition efficiency, largely independent of the distance between the powder-spraying apparatus and the work piece, it is proposed to connect both internal high-voltage electrodes and external high-voltage electrodes to a high-voltage source via high-resistance components.

Growing community of inventors

Schwetzingen, Germany

Jörg Sopka

Growing community of inventors

Schwetzingen, Germany

J&ouml;rg Sopka

Jörg Sopka