Transformer assembly with improved retainer and insulator

Details Transformer assembly with improved retainer and insulator Transformer assembly with improved retainer and insulator

H - Electricity

01

F

H01F 30/16 (2006.01) H01F 27/06 (2006.01) H01F 39/00 (1990.01)

Patent

CA 2106108

For use in a trip unit, a transformer assembly is provided in a compact and cost effective form. The assembly includes a toroidal transformer between a pair of busses, and plastic retainers around a conductor which connects the busses. Each of the plastic retainers are molded as a plastic part which features: a flat portion separating the transformer axially from the adjacent bus, a tubular section attached to the flat portion which protrudes through the center of the transformer and serves to separate it radially from the bus, and a set of ribs protruding from the tubular, flat portions which serve to slightly penetrate the insulation material in the center of the transformer and grip the transformer to prevent it from rotating, and a lip protruding from the flat portion which causes the retainer to stop rotational motion relative to the bus.

Destiné à être utilisé dans un dispositif de déclenchement, bloc transformateur présenté sous une forme compacte et économique. Le bloc comprend un transformateur toroïdal placé entre deux bus et des dispositifs de retenue en plastique entourant un conducteur qui relie les bus. Chacun des dispositifs de retenue en plastique est moulé sous forme d'une pièce en plastique comprenant : une partie plate qui sépare le transformateur du bus adjacent dans le sens axial; une section tubulaire fixée à la partie plate faisant saillie jusqu'au centre du transformateur et servant à le séparer du bus dans le sens radial; un ensemble de nervures faisant saillie à partir des parties tubulaires et plates, destinées à pénétrer légèrement dans le matériau isolant au centre du transformateur et à saisir le transformateur pour l'empêcher de tourner; un rebord faisant saillie à partir de la partie plate permettant au dispositif de retenue d'arrêter le mouvement de rotation par rapport au bus.

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