An electric wire includes a metal conductor, a heat stable tape, wherein the tape is in direct contact with the conductor, wherein the tape can withstand temperatures of at least about 1850 F., a high temperature fiberglass layer, wherein the fiberglass layer is in direct contact with the tape, and an insulating sheath around the fiberglass layer, wherein the wire has no conduit protection.

Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.

A wireline system includes a control system, a downhole tool, and a wireline cable coupling the downhole tool and the control system. The wireline cable includes a plurality of conductors, which includes a core conductor and a concentric conductor disposed around the core conductor, wherein two of the plurality of conductors form a conductor pair, and wherein each of the plurality of conductors is configured to transmit power, data, or both, between the control system and the downhole tool. The wireline cable further includes one or more insulative layers, wherein at least one insulative layer is disposed between any two conductors.

Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.

A coaxial cable includes a central conductor, a plurality of insulating twisted threads or insulation strings wound therearound, each insulating twisted thread including a plurality of insulating strings twisted together, a cover layer provided around the insulating twisted threads or the insulation strings to form a gap to the insulating twisted threads or the insulation strings, and an outer conductor and a jacket provided on the outer periphery of the cover layer.

Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.

An electric wire includes a metal conductor, a heat stable tape, wherein the tape is in direct contact with the conductor, wherein the tape can withstand temperatures of at least about 1850 F., a high temperature fiberglass layer, wherein the fiberglass layer is in direct contact with the tape, and an insulating sheath around the fiberglass layer, wherein the wire has no conduit protection.

A data cable contains a cable core having a plurality of core pairs. Each of the core pairs are composed of two cores directly surrounded by a pair shielding. The pair shielding has a conductive exterior surrounding a core pair and being oriented outward. An overall shield surrounds the cable core and lies on the conductive exterior of the pair shielding and is thereby electrically connected to the cable core.

A cable has a pair of insulated core wires extending parallel to each other in a longitudinal direction. Each of the insulated core wires includes a central conductor and a core insulation layer wrapped around the central conductor in a circumferential direction. A first metal shielding layer is wrapped around the pair of insulated core wires. A second metal shielding layer is wrapped around the first metal shielding layer. An outer insulation layer is wrapped around an outer circumferential surface of the second metal shielding layer.

A medical coaxial connector includes: an internal conductor configured to be electrically connected to an other-side inner conductor when the medical coaxial connector is connected to an other-side medical coaxial connector; an outer conductor electrically connected to the inner conductor, formed in a tubular shape surrounding the inner conductor, and configured to be electrically connected to an other-side outer conductor when the medical coaxial connector is connected to the other-side medical coaxial connector; and an insulating body that is placed on inner periphery side of the outer conductor and formed in a cylindrical shape surrounding the inner conductor. The insulating body is configured to be placed on inner periphery side of the other-side outer conductor and a leading end of the insulating body in a connection direction toward the other-side coaxial connector is configured to protrude more in the connection direction than the inner conductor.