H - Electricity – 01 – F
Patent
H - Electricity
01
F
H01F 38/30 (2006.01)
Patent
CA 2143657
In a current transformer for incorporating in a metal capsule (1) that is at ground potential and surrounds a high-voltage line (2) there is at least one annular core (5), a secondary winding that is wound onto this, and at least one grounded protective winding (6). In order to provide protection against over-voltages, the annular core (5) is coaxially surrounded on its outer side by a hollow cylindrical electrically conductive shielding body (8) that forms a reference ground for the ground connection (7) of the protective winding (6) that extends essentially radially.
Transformateur de courant destiné à être incorporé à une capsule métallique (1) qui est au potentiel de terre et entoure une ligne haute tension (2). Le transformateur comprend au moins un noyau annulaire (5) autour duquel est enroulé un enroulement secondaire et au moins un enroulement de protection (6) mis à la terre. Afin d'assurer une protection contre les surtensions, le noyau annulaire (5) est entouré, de façon coaxiale, sur son côté extérieur par un élément de blindage cylindrique, creux et conducteur (8) qui constitue une mise à la terre de référence pour la prise de terre (7) de l'enroulement de protection (6) qui se prolonge essentiellement radialement.
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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