摘要:
The invention relates to a data transmission electric wire comprising a plurality of conductor strands covered in at least one insulating covering including PTFE, the plurality of strands comprising an inner core of first strands covered by at least one outer layer of second strands, said first and second strands being constituted of different metals, the metal of said second conductor strands presenting hardness that is lower than that of the metal of said first conductors, and said first strands being constituted essentially by an alloy of copper and said second strands being constituted essentially of copper. According to the invention, said alloy is a homogeneous copper alloy in the alpha phase that is stable at a temperature less than or equal to 500° C.
摘要:
An electrical cable (1) is provided having (1) a conductive element (2), a first layer (3) having polyimide (PI) surrounding said conductive element (2), a second fluorinated layer (4) having at least one fluorinated compound, surrounding the first layer, and optionally at least one fluorinated semiconductor layer having at least one fluorinated compound, where the total thickness of the assembly of fluorinated layers is at least 0.4 mm.
摘要:
A device for fabricating an insulating material cellular sheath around a conductor. The device has a central guide including a longitudinal passage adapted to receive the conductor. The fabrication device further has a peripheral guide, an internal surface of the peripheral guide and an external surface of the central guide defining a passage adapted to receive the insulating material in a viscous state. The fabrication device further maintains a sleeve separate from the central guide and the peripheral guide. At least a portion of the sleeve is adapted to be placed between the central guide and the peripheral guide and includes an opening that opens onto the central guide and onto the peripheral guide.
摘要:
An electrical cable (1) is provided having (1) a conductive element (2), a first layer (3) having polyimide (PI) surrounding said conductive element (2), a second fluorinated layer (4) having at least one fluorinated compound, surrounding the first layer, and optionally at least one fluorinated semiconductor layer having at least one fluorinated compound, where the total thickness of the assembly of fluorinated layers is at least 0.4 mm.
摘要:
An electric cable includes an electrical conductor surrounded by a first layer of mica tape made up of mica particles deposited by means of a polymer binder on a backing, a second layer of a polyimide tape, and a third layer of a polytetrafluoroethylene tape, where the first layer is subjected to heat treatment at a temperature of at least 400° C. and the ratio R of the weight per unit length of PTFE over the sum of the weights per unit length of the polymer binder and of the polyimide is such that R is greater than or equal to 2 when the section of the electrical conductor is no greater than 0.2 mm2, R is greater than or equal to 4 when the section of the electrical conductor is strictly greater than 0.2 mm2 and strictly less than 0.6 mm2, R is greater than or equal to 6 when the section of the electrical conductor is equal to 0.6 mm2, and R is greater than or equal to 12 when the section of the electrical conductor is strictly greater than 0.6 mm2.
摘要:
A method of manufacturing an insulative material cellular insulator around a conductor, the insulator having a longitudinal passage in which the conductor is housed and closed cells extending longitudinally and separated from each other by radial walls, includes the following operations: the insulative material in the viscous state is extruded to impart the required shape to it to form the cells, the insulative material shaped in this way is applied to the conductor, and the insulative material is cooled to obtain the insulator. The insulative material is applied to the conductor at a distance from the exit of the shaping device such that the material is drawn down sufficiently for the walls of the cells not to be thinned without pressurizing the cells.
摘要:
The herringbone harness has multiple branches leading off from a trunk divided into segments by the forks at which the branches start. The harness is exclusively shielded firstly by first braids made over the individual branches, each first braid having a first enlarged tab over at least one of the segments on either side of the branch in question, and secondly by second braids made over the individual segments, each second braid having a second enlarged tab over that adjacent segment which is of smaller diameter than the segment in question. The application is a shielded harness serving multiple points from a common point of origin.
摘要:
A dielectric structure (10) for an electric wire or cable, presenting an inner hollow cylindrical body (2) and an outer hollow cylindrical body (3), said bodies (2, 3) being coaxial and being connected together by a plurality of spacers (4a, 4b, 4c, 14). The main characteristic of a dielectric structure is that each spacer (14) is constituted by a first curved wall (15) and by a second curved wail (16) that is curved in the opposite direction relative to a radial plane interconnecting the two bodies (2, 3), the walls (15, 16) having at least one intersection zone (17), two successive spacers (14) being in contact with each other.
摘要:
The invention relates to a data transmission electric wire comprising a plurality of conductor strands covered in at least one insulating covering including PTFE, the plurality of strands comprising an inner core of first strands covered by at least one outer layer of second strands, said first and second strands being constituted of different metals, the metal of said second conductor strands presenting hardness that is lower than that of the metal of said first conductors, and said first strands being constituted essentially by an alloy of copper and said second strands being constituted essentially of copper. According to the invention, said alloy is a homogeneous copper alloy in the alpha phase that is stable at a temperature less than or equal to 500° C.
摘要:
An electric cable includes an electrical conductor surrounded by a first layer of mica tape made up of mica particles deposited by means of a polymer binder on a backing, a second layer of a polyimide tape, and a third layer of a polytetrafluoroethylene tape, where the first layer is subjected to heat treatment at a temperature of at least 400° C. and the ratio R of the weight per unit length of PTFE over the sum of the weights per unit length of the polymer binder and of the polyimide is such that R is greater than or equal to 2 when the section of the electrical conductor is no greater than 0.2 mm2, R is greater than or equal to 4 when the section of the electrical conductor is strictly greater than 0.2 mm2 and strictly less than 0.6 mm2, R is greater than or equal to 6 when the section of the electrical conductor is equal to 0.6 mm2, and R is greater than or equal to 12 when the section of the electrical conductor is strictly greater than 0.6 mm2.