High-voltage outdoor bushing

H - Electricity – 01 – B

Patent

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Details

H01B 17/28 (2006.01)

Patent

CA 2701361

The high-voltage outdoor bushing comprises a conductor (2) extended along an axis (1 ), a condenser core (3) and an electrically insulating polymeric weather protection housing (7) moulded on the condenser core (3). The condenser core (3) contains an electrically insulating tape (4) which is wound in spiral form around the conductor (2), capacitance grading insertions (5) arranged between successive windings of the tape (4) and a cured polymeric insulating matrix embedding the wound tape (4) and the capacitive grading insertions (5). A moisture diffusion barrier is incorporated inside the condenser core (3) prior to moulding the weather protection housing (7). Such a bushing is distinguished by an excellent storage and operation stability under hot and wet weather conditions. Image

La présente invention concerne une traversée externe haute tension qui comprend un conducteur (2) s'étendant le long d'un axe (1), un noyau de condensation (3) et un logement de protection contre les intempéries en polymère électriquement isolant (7) moulé sur le noyau de condensation (3). Le noyau de condensation (3) contient un ruban électriquement isolant (4) qui est enroulé en spirale autour du conducteur (2), des éléments de graduation de capacité (5) insérés entre les enroulements successifs du ruban (4) et une matrice isolante en polymère durci enveloppant le ruban enroulé (4) et les éléments de graduation de capacité (5). Une barrière contre la diffusion d'humidité est intégrée dans le noyau de condensation (3) avant le moulage du logement de protection contre les intempéries (7). Une telle traversée se distingue par une excellente stabilité au stockage et à l'utilisation dans des conditions météorologiques chaudes et humides.

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