Patent ID: 7152306
Filing Date: 2006-12-26
Classification: H02K,Y10T

Abstract:
1. A method for installing a stator winding, the method comprising: providing a stator core having winding slots, which extend axially through the stator core and which are intended for receiving the stator winding, providing on a cable reel at least one cable for very high voltages, which is flexible and comprises at least one electric conductor with an envelope capable of confining the electric field generated around the conductor, drawing a cable portion out from the cable reel, bringing the cable portion through the cavity in the center of the stator core, so that the cable is made to extend once through said cavity, inserting the cable into two winding slots via a longitudinal opening of the respective winding slot, which opening opens on to said cavity, for the formation of a first winding turn with a first winding direction, forming each further winding turn that is jointlessly connected to the first winding turn and has the same winding direction as the first winding by drawing out a first further cable portion from the cable reel, bringing the first further cable portion through said cavity in the center of the stator core, thereby making the cable extend once through said cavity, making the first further cable portion include a cable section in the shape of a loop corresponding to a cable turn on the cable reel that has been lifted off from the cable reel by way of a lateral movement over one of the gables of the cable reel, the loop having a first and a second section, inserting the cable in its cross-direction into two winding slots via a longitudinal opening of the respective winding slot, which opening opens on to said cavity, each of said first and second sections occupying a different one of said two winding slots, drawing out a second further cable portion from the cable reel to form each further winding turn that is jointlessly connected to the first winding turn and has a second winding direction opposite the winding direction of the first winding turn, bringing the second further cable portion through said cavity in the center of the stator core, so that the cable is made to extend once through said cavity, making the second further cable portion include a cable section in the shape of a loop corresponding to a cable turn on the cable reel that has been lifted off from the cable reel with a lateral movement over the other gable of the cable reel, the loop having a first and a second section and inserting the cable in its cross-direction into two winding slots via a longitudinal opening of the respective winding slot, which opening opens on to said cavity, each of said first and second sections occupying a different one of said two winding slots.