A method of manufacturing a noise shield cable, wherein the noise shield cable includes a conductor, an insulation provided around the conductor, a noise shielding layer provided around the insulation and a sheath provided around the noise shielding layer, includes providing an insulating material including a magnetic powder, pressing and then rolling the insulating material to form a sheet, and winding the sheet around the insulation to form the noise shielding layer. An aspect ratio of the magnetic powder represented by a maximum length/a maximum thickness is more than 10.

A method is provided for applying a field grading layer to a power cable includes preparing a polymer composition having a polymer matrix, at least one conductive filler different from a non-linear conductive organic filler, and at least one crosslinking agent. The method includes extruding the polymer composition into a crosslinkable field grading tape and winding the crosslinkable field grading tape onto a section of power cable in need of field grading. The crosslinkable tape is crosslinked to obtain a field grading layer.

A method is provided for applying a field grading layer to a power cable includes preparing a polymer composition having a polymer matrix, at least one conductive filler different from a non-linear conductive organic filler, and at least one crosslinking agent. The method includes extruding the polymer composition into a crosslinkable field grading tape and winding the crosslinkable field grading tape onto a section of power cable in need of field grading. The crosslinkable tape is crosslinked to obtain a field grading layer.

A system and a process for continuously electrolytically coating a wire, useful for a high tension cable, is provided. The system includes a bath containing a precursor for an electro-ceramic coating on a wire and containing a cathodic connection, at least one motor connected to at least one motive assembly to impart movement to the wire. A power source provides high voltage and high current to the wire through the electrification device, and through the wire in the bath to the cathode connection via the aqueous electrolytic solution. The process includes electrifying bare wire with a high voltage and a high current, passing the electrified bare wire through a bath having a cathodic connection and containing an aqueous solution with a precursor for an electro-ceramic coating, and electrochemically reacting the wire with the precursor thereby generating a coated wire having an electro-ceramic coating on at least one surface.

A bus bar (1) comprises: a laminated conductive wire (20) formed by arranging side by side in the longitudinal direction a first plate-shaped conductive wire (21) formed by spirally winding stripe conductors (11, 12) mutually adjacent in the width direction while bringing the opposing inner surfaces closer to each other, and a second plate-shaped conductive wire (22) formed by spirally winding the stripe conductors (11, 12) in the direction opposite the direction of the first conductive wire (21) while bringing the opposing inner surfaces closer to each other, and overlapping these wires (21, 22) so that the outer surfaces in the width direction face each other; and terminals (30) joined to the first conductive wire (21) and the second conductive wire (22) at both ends of the laminated conductive wire (20).

A method of manufacturing a noise shield cable, wherein the noise shield cable includes a conductor, an insulation provided around the conductor, a noise shielding layer provided around the insulation and a sheath provided around the noise shielding layer, includes providing an insulating material including a magnetic powder, pressing and then rolling the insulating material to form a sheet, and winding the sheet around the insulation to form the noise shielding layer. An aspect ratio of the magnetic powder represented by a maximum length/a maximum thickness is more than 10.

A method of manufacturing a noise shield cable, wherein the noise shield cable includes a conductor, an insulation provided around the conductor, a noise shielding layer provided around the insulation and a sheath provided around the noise shielding layer, includes providing an insulating material including a magnetic powder, pressing and then rolling the insulating material to form a sheet, and winding the sheet around the insulation to form the noise shielding layer. An aspect ratio of the magnetic powder represented by a maximum length/a maximum thickness is more than 10.

Disclosed herein are exemplary embodiments of electrically insulated conductors and exemplary methods for electrically insulating conductors, such that the resulting electrically insulated conductors are resistant to partial discharge (PD), and thereby suitable for PD resistant design schemes (e.g., 800 V or above electric motors, etc.). An exemplary method includes applying an enamel coating along an electrical conductor, wrapping an electrically insulative tape around the enameled electrical conductor, and heating sealing the tape-wrapped, enameled electrical conductor to help ensure good adhesion of the electrically insulative tape to the enamel coating. The electrically insulative tape comprises polyimide and a sufficient amount of an electrically insulative, corona resistant filler for PD resistance. The tape-wrapped, enameled electrical conductor is resistant to partial discharge (PD), e.g., suitable for use in a stator winding of an 800 volt or above electric motor, etc.

Disclosed is a head for a taping device. The head for a taping device according to various embodiments of the present disclosure may include: a housing including a plate having a cutout portion configured to allow a bus bar to pass therethrough, and an internal through hole communicating with the cutout portion; a plurality of first bearings coupled to the housing and arranged around the internal through hole along a first circular ring shape; a first ring gear having a first opening configured to allow the bus bar to pass therethrough, and an inner circumferential surface rotatably supported by the first bearing; a first tape feeder including a first abutment coupled to the first ring gear and a first mounting roller rotatably coupled to the first abutment; a first driver coupled to the housing and configured to rotate the first ring gear; a plurality of second bearings coupled to the housing, spaced outward from the first bearings, and arranged along a second circular ring shape; a second ring gear having a second opening configured to allow the bus bar to pass therethrough, and an inner circumferential surface rotatably supported by the second bearings; a second tape feeder including a second abutment coupled to the second ring gear and a second mounting roller rotatably coupled to the second abutment; and a second driver coupled to the housing and configured to rotate the second ring gear. As a result, two types of tape can be wound around the busbar in one process.

An insulated electric wire is formed by spirally winding an insulating tape laminating an insulating layer and an adhesive layer onto a conductor such that the adhesive layer is disposed onto the conductor, in which when a conductor diameter is x mm, the insulating tape has an overlap length y of y1.5099ln(x)0.4959 mm, a width z of z0.3774x+24.547 mm, and an adhesive force c of c3.2 N/19 mm with respect to a back surface of the insulating tape which is opposite to the adhesive layer.