H - Electricity – 02 – K
Patent
H - Electricity
02
K
H02K 3/32 (2006.01) H01B 9/02 (2006.01) H01F 3/10 (2006.01) H01F 3/14 (2006.01) H01F 27/28 (2006.01) H01F 27/32 (2006.01) H01F 27/34 (2006.01) H02K 3/14 (2006.01) H02K 3/28 (2006.01) H02K 3/40 (2006.01) H02K 3/48 (2006.01) H02K 15/00 (2006.01) H02K 15/12 (2006.01) H02K 9/19 (2006.01)
Patent
CA 2255772
The invention relates to an insulated conductor (30) for high-voltage windings in electric machines and to a method of adapting the same. The insulated conductor comprises a number of strands (12), a first semi-conductive layer (14) surrounding the strands (12), a first insulating layer (16) surrounding the first semi-conductive layer (14) and a second semi-conductive layer (18) surrounding the first insulating layer (16), which second semi-conductive layer (18) is earthed at at least two different points along the insulated conductor (30). The electric contact in the second semi-conductive layer (18) is broken (20) between each pair of earthed points. At said breaks (20) in the second semi-conductive layer (18) a device (24, 26) is arranged to reduce amplification of the electric field strength at said breaks (20).
L'invention concerne un conducteur isolé (30) destiné à des enrolements à haute tension pour machines électriques ainsi qu'un procédé d'adaptation dudit conducteur. Le conducteur isolé comprend un certain nombre de fils (12), une première couche semi-conductrice (14) entourant les fils, une première couche isolante (16) entourant la première couche semi-conductrice (14) ainsi qu'une seconde couche semi-conductrice (18) entourant la première couche isolante (16), laquelle seconde couche semi-conductrice (18) est mise à la terre au niveau d'au moins deux points différents situés le long du conducteur isolé (30). Le contact électrique dans la seconde couche semi-conductrice (18) est rompu (20) entre chaque paire de points mis à la terre. Au niveau desdites ruptures (20) dans la seconde couche semi-conductrice (18), est agencé un dispositif (24, 26) destiné à réduire l'amplification de l'intensité du champ électrique au niveau desdites ruptures (20).
Carstensen Peter
Leijon Mats
Asea Brown Boveri Ab
Gowling Lafleur Henderson Llp
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