Abstract: An electrical alternating current machine having a stator sheet metal body defining an external contour of a regular n-sided polygon or a circular sheet metal shape. The radial and axial restraint of the sheet metal pack occurs by means of casing walls, tension rails (23) and end plates. The air is conveyed in the electrically unused casing corners. The sheet metal pack, together with the casing walls and end plates, form a compact self-supporting constructional unit with reduced shaft centerline height for a given power.

Abstract: A rotating starting resistance for a rotating electrical machine is disclosed. The resistance includes a helicoidal resistance wire that is wound in the shape of a torus, and connected to the rotating shaft of the electrical machine. The resistance wire may be directly fastened to a supporting member by means of a glass fiber cord suitably impregnated with a synthetic resin. The helicoidal nature of the starting resistance permits efficient cooling, and allows minimization of the overall height of the resistance. The resistance wire, which is wound in the shape of a helicoidal torus, may be reinforced at either the inner or outer diameter of the torus.