Rotor bar of squirrel-cage rotor of induction machine, has contour which is provided in radial outer surfaces and is provided with several grooves with arc-shaped cross-section or wedge-shaped cross-section

摘要

The rotor bar (4) has a contour in the radial outer surfaces, which is provided in the region of short circuit ring (5) and in the region of rotor core (1). The contour comprises several grooves (24) with an arc-shaped cross-section or wedge-shaped cross-section. The grooves comprising an axial alignment, interact with each other. The groove comprises an axis in beveled orientation.