Flexible stator slot closure arrangement

Details Flexible stator slot closure arrangement Flexible stator slot closure arrangement

H - Electricity

02

K

310/109

H02K 3/487 (2006.01) H02K 15/00 (2006.01)

Patent

CA 1200270

IMPROVED FLEXIBLE STATOR SLOT CLOSURE ARRANGEMENT ABSTRACT OF THE DISCLOSURE A slot closure arrangement for closing the slot opening of slots in the stator of a dynamoelectric machine and for providing a restraining force against conductors in the slots The slots have opposing notches on opposite sides of the slot adjacent the slot opening. A flat rectangular spring member is placed in the slot opening with the opposite edges of the flat spring member each terminating in one of the opposing notches. A pair of wedges with complementary tapered surfaces is inserted between the spring member and the surface of the conductor in the slot adjacent and facing the slot opening. The wedges are advanced one over the other to increase the overall thickness. The surface of the wedge engaging the spring member has a thickness at the center greater than the thickness at the edges, and the center presses the spring member outwardly when the wedges are advanced, deforming the spring member which then provides a force through the wedges against the conductor in the slot. The spring member not only provides the restraining spring force but it serves as a slot closure member. Because there is no material covering the outer surface of the spring member (except for the extreme edge portions within the notches), nothing impedes heat dissipation from the spring member to the ventilating air.

443885

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