Method for assembling a three-phase current transformer

Details Method for assembling a three-phase current transformer Method for assembling a three-phase current transformer

H - Electricity

01

F

H01F 41/02 (2006.01) H05K 3/30 (2006.01)

Patent

CA 2237326

A method of assembling a three-phase current transformer for printed circuit board installation. Three current transformers, each having a spin wound coil positioned about one leg of an unassembled continuous lamination core, are placed side-by-side in a transformer carrier such that two parallel core legs of the center transformer overlap the adjacent core legs of the two outside transformers and further such that printed circuit board terminal pins attached to the coils pass through stand-off sleeves formed from the transformer carrier. Rivets are placed through holes in the laminations of the overlapped core legs and in the transformer carrier thereby simultaneously riveting the three transformer cores and the transformer carrier together making a three-phase transformer assembly.

Méthode d'assemblage d'un transformateur de courant triphasé destiné à être installé sur une plaquette de circuits imprimés. Trois transformateurs de courant possédant chacun une bobine enroulée, qui est placée près d'une colonne d'un noyau de tôles magnétiques continues non assemblées, sont disposés côte à côte sur un support de transformateurs de manière à ce que deux colonnes de noyau parallèles du transformateur du milieu recouvrent les colonnes de noyau adjacentes des deux transformateurs restants et que les broches-bornes de la plaquette de circuits imprimés connectées aux bobines passent par les manchons placés à distance et formés à même le support de transformateurs. Au moyen de rivets, insérés dans les trous pratiqués dans les tôles magnétiques des colonnes de noyau recouvertes et dans le support de transformateurs, on arrive à assembler par rivage les noyaux des trois transformateurs ainsi que le support de transformateurs, ce qui permet d'obtenir un ensemble de transformateurs de courant triphasé.

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