Abstract:
The invention concerns a low pass cable, comprising successively from its centre towards its periphery: a conductive core (10); a first dielectric layer (12); a magnetic absorption layer in ferromagnetic alloy with amorphous or nanocrystalline structure (14); and an insulating sheath (20).
Abstract:
The invention concerns a device for a shielding connection (10) between a protective enclosure case (12) of a high voltage apparatus (14) and a shielded cable (20) comprising at least two conductors (22, 24) and a tubular shielding braid (26) enclosing said conductors. The device comprises a rotating ferrule (20) including one first cylindrical end (34) and a second end (36) with a rotating ring-shaped rib (38) with a shoulder (40) facing the direction opposite to the first end (34),said rib (38) external diameter being larger than said opening (28), a clamp collar (46) maintaining said braid (26) and said ferrule (32), and an arc-shaped elastic retaining ring (54) extending over an angle with a centre of at least 200°, said collar (46) being designed to co-operate with stop means (62) integral with said second ferrule (30) end (36). The invention is applicable to shielding connection between a discharge lamp and a high voltage generator.
Abstract:
Method of continuous manufacture of a conductor comprising an aluminium-based core (S) coated with at least one electrodeposited silver layer. The following operations are performed successively together with intermediate rincing stages (r): a) degreasing the conductor; b) subjecting the core to an etching bath; c) treating the conductor's surface by immersion in an adhesion bath; d) electrodepositing a first layer by immersion of the conductor in a first electrolytic bath; and e) electrodepositing a second silver layer by immersion of the conductor in a second electrolytic bath.
Abstract:
Method of continuous manufacture of a conductor comprising an aluminium-based core (S) coated with at least one electrodeposited silver layer. The following operations are performed successively together with intermediate rincing stages (r): a) degreasing the conductor; b) subjecting the core to an etching bath; c) treating the conductor's surface by immersion in an adhesion bath; d) electrodepositing a first layer by immersion of the conductor in a first electrolytic bath; and e) electrodepositing a second silver layer by immersion of the conductor in a second electrolytic bath.
Abstract:
Procédé de fabrication d'un ruban de PTFE dont la masse volumique est inférieure ou égale à 0,3 g/cm3, caractérisé en ce qu'on effectue un premier étirage d'un ruban cru de PTFE (A, B) en chauffant pour abaisser la masse volumique entre 0,7 g/cm3 et 0,30 g/cm3 puis on effectue au moins une étape du type comportant une phase de stabilisation du ruban sans changement d'état du PTFE, par passage dans un four (F2) à une température et pendant une durée qui sont fonctions de la masse à stabiliser en maintenant le ruban sous tension afin que sa masse volumique n'augmente pas suivie d'une phase d'étirage sous chauffage pour que la masse volumique du ruban atteigne une valeur comprise entre 0,2 et 0,12 g/cm3. Le ruban de PTFE poreux de l'invention est utilisé notamment comme revêtement isolant dans un câble coaxial.
Abstract:
The present invention relates to a high-voltage electrical cable including a central conductor (1) made of copper or a copper alloy coated with nickel, and at least one main insulating material layer (2) arranged around the central conductor (1), said insulating material layer consisting of an extruded thermoplastic material selected from among poly(ether-ketone), poly(ether-ketone-ether-ketone-ketone), and the mixtures thereof. The invention also relates to the use of the cable in the aerospace and/or nuclear and/or scientific research and/or oil research fields.