Insulated core stud for rotor and stator laminations

H - Electricity – 02 – K

Patent

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Details

H02K 1/06 (2006.01)

Patent

CA 2421606

An insulated core stud for use in the core structure of at least one of a stator and a rotor of a dynamoelectric machine is adapted to pass through holes contained in laminations of the core structure. The insulated core stud has a central portion and a first layer of heat shrinkable tubular insulation shrunk fit onto and covering at least the central portion of the core stud that passes through the laminations. One or more additional layers of heat shrinkable tubular insulation are shrunk fit onto at least a portion of the first Layer of insulation that passes through the laminations. These second layers provide mechanically protection to the underlying layers of insulation against breaks occurring in the electrical insulation when the laminations and core studs are assembled into the core structure.

Une tige d'âme isolée pour structure d'âme d'au moins un stator et un rotor de machine dynamo- électrique est adaptée pour traverser des orifices présents dans les tôles magnétiques de la structure de l'âme. Cette tige comporte une partie centrale et une première couche d'isolant tubulaire thermorétrécissable qui y est assemblée par rétreinte, et qui recouvre au moins la partie centrale de la tige de l'âme qui traverse les tôles magnétiques. Une ou deux couches supplémentaires d'isolant tubulaire thermorétrécissable sont assemblées par rétreinte au moins sur une partie de la première couche d'isolant qui traverse les tôles magnétiques. Ces couches supplémentaires protègent mécaniquement les couches sous-jacentes de l'isolant contre les ruptures apparaissant dans l'isolant électrique lors de l'assemblage des tôles magnétiques et des tiges de l'âme dans la structure de l'âme.

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