High-voltage bushing

Details High-voltage bushing High-voltage bushing

H - Electricity

01

B

H01B 17/28 (2006.01)

Patent

CA 2632428

The high-voltage bushing (1) has a conductor (2) and a core (3) surrounding the conductor (2), wherein the core (3) comprises a sheet-like spacer(4), which spacer (4) is impregnated with an electrically insulating matrix material (6). The spacer (4) is wound in spiral form around an axis (A), the axis (A) being defined through the shape of the conductor (2). Thus, a multitude of neighbouring layers is formed. The core (3) . further comprises equalization elements (5) in appropriate radial distances to the axis (A). It is characterized in that the equalization elements (5) comprise electrically conductive layers (51), which layers (51) have openings (9), through which openings (9) the matrix material (6) can penetrate, and in that the equalization elements (5) are applied to the core (3) separately from the spacer (4). Preferably, the electrically conductive layers (51) are net- shaped, grid-shaped, meshed or perforated. The openings (9) are fillable with the matrix material (6), preferably a particle-filled resin (6) can be used.

L~invention concerne une traversée haute tension (1) comportant un conducteur (2) et une âme (3) enveloppant le conducteur (2), l~âme (3) comprenant un espaceur de type feuille (4), l~espaceur (4) étant imprégné d~un matériau matrice (6) électriquement isolant. L~espaceur (4) est enroulé en spirale autour d~un axe (A), l~axe (A) traversant le conducteur (2), de manière à former une multitude de couches voisines. L~âme (3) comprend en outre des éléments d~égalisation (5) placés à des distances radiales appropriées vis-à-vis de l~axe (A). La traversée haute tension (1) est caractérisée en ce que les éléments d~égalisation (5) comprennent des couches (51) électriquement conductrices, les couches (51) comportant des ouvertures (9) dans lesquelles le matériau matrice (6) peut pénétrer, et en ce que les éléments d~égalisation (5) sont appliqués sur l~âme (3) séparément de l~espaceur (4). Les couches (51) électriquement conductrices prennent de préférence la forme d~un filet, d~une grille, d~une maille ou sont perforées. Les ouvertures (9) peuvent être remplies du matériau matrice (6), lequel est de préférence une résine chargée de particules.

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