Patent classifications
H01B7/0275
STATOR HAVING AN INSULATION LAYER
The invention relates to a stator (1) for an electric machine, comprising a laminated core (2) having multiple grooves (4) evenly distributed in the circumferential direction (10) around a longitudinal axis (3) and continuously extending in a longitudinal direction (11) of the laminated core (2), which grooves (4) are each provided for receiving at least two electric conductors (8) having a substantially rectangular cross-section, said electric conductors (8) being insulated against each other and against the laminated core (2) by means of at least one insulation layer (9) coating in the radial direction (12) and the circumferential direction (10) as well as in the longitudinal direction (11) at least over a stator height (1) of the stator (1), wherein the at least one insulation layer (9), to ensure flawless insulation, comprises a thermoplastic high-performance polymer, which is continuously closed in the circumferential direction (10) and the radial direction (12) and preferably directly molded on the electric conductor (8) by means of an extrusion process, wherein the insulation layer (9), at least in the circumferential direction (10), has a total circumferential layer thickness (13), which is at least 1.5 to 3, preferably 1.8 to 2.2 times a total radial layer thickness (14) in the radial direction (12) of the respective electric conductor (8).
CABLE
A cable includes: a core wire; and an insulating outer layer covering the core wire; where in the core wire including an inner conductor, an inner insulating layer covering the inner conductor, and an outer insulating layer covering the inner insulating layer, the inner insulating layer being made of a material having dielectric constant and loss factor not higher than those of the material of the outer insulating layer, the outer insulating layer being made of a flame-retardant material.
COVERED ELECTRICAL WIRE, TERMINAL-EQUIPPED ELECTRICAL WIRE, COPPER ALLOY WIRE, COPPER ALLOY STRANDED WIRE, AND METHOD FOR MANUFACTURING COPPER ALLOY WIRE
A covered electrical wire comprises a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a plurality of copper alloy wires composed of a copper alloy and twisted together, and having a wire diameter of 0.5 mm or less, the copper alloy containing Fe in an amount of 0.1% by mass or more and 1.6% by mass or less, P in an amount of 0.05% by mass or more and 0.7% by mass or less, and Sn in an amount of 0.05% by mass or more and 0.7% by mass or less, and further including one or more elements selected from Zr, Ti and B in an amount of 1000 ppm by mass or less in total, with a balance being Cu and impurities.
ISOLATED ELECTRICALLY CONDUCTIVE ELEMENT AND METHOD FOR MANUFACTURING THE SAME
An insulated electrically conductive element, including at least one inner electrically conductive element and at least one outer insulating element, and to a method for producing such an insulated electrically conductive element.
Multicore cable
A multicore cable is composed of a bunched core composed of a plurality of electric wires laid together, each including a conductor, and an electrical insulating member provided over a periphery of the conductor, an abrasion suppressing layer configured as a taping member helically wrapped around a periphery of the bunched core, a shielding layer composed of a braided shield provided over an outer periphery of the abrasion suppressing layer, and a sheath provided over a periphery of the shielding layer. An opposite surface of the taping member constituting the abrasion suppressing layer to the bunched core and an opposite surface of the taping member constituting the abrasion suppressing layer to the shielding layer are composed of a fluoropolymer resin. The taping member constituting the abrasion suppressing layer is non-adhesively lap wound in such a manner as to partially overlap itself in a width direction thereof.
MULTICORE CABLE
A multicore cable is composed of a bunched core composed of a plurality of electric wires laid together, each including a conductor, and an electrical insulating member provided over a periphery of the conductor, an abrasion suppressing layer configured as a taping member helically wrapped around a periphery of the bunched core, a shielding layer composed of a braided shield provided over an outer periphery of the abrasion suppressing layer, and a sheath provided over a periphery of the shielding layer. An opposite surface of the taping member constituting the abrasion suppressing layer to the bunched core and an opposite surface of the taping member constituting the abrasion suppressing layer to the shielding layer are composed of a fluoropolymer resin. The taping member constituting the abrasion suppressing layer is non-adhesively lap wound in such a manner as to partially overlap itself in a width direction thereof.
Solid polymeric articles having hydrophobic compounds intermixed therein
The present invention relates to a three-dimensional solid polymeric article having surface effects comprising a polymer composition and 0.1 to 20% by weight of a hydrophobic compound, based on the total weight of the solid polymeric article, where the hydrophobic compound is intermixed throughout the polymer composition and throughout three-dimensional solid polymeric article; and where the hydrophobic compound is selected from a cyclic alcohol which is substituted with at least two hydrophobic groups.
Assembled wire, method of producing the same, and electrical equipment using the same
An assembled wire, having: an assembled conductor composed of a plurality of conductor strands each having a rectangular cross-section, stacked and arranged each other across an interlayer insulating layer; an insulating outer layer that coats the assembled conductor including the interlayer insulating layer; and an adhesion layer composed of a thermoplastic resin having a thickness of 3 μm or more and 10 μm or less between the assembled conductor and the insulating outer layer.
COVERED ELECTRICAL WIRE AND TERMINAL-EQUIPPED ELECTRICAL WIRE
A covered electrical wire including a conductor and an insulating coating layer covering an outer periphery of the conductor, in which the conductor is a twisted wire obtained by concentrically twisting together a plurality of elemental wires constituted by a copper alloy, the copper alloy contains one or more elements selected from Fe, Ti, Mg, Sn, Ag, Ni, In, Zn, Cr, Al, and P in a total amount of 0.01 mass % to 5.5 mass % inclusive, and the remaining portion includes Cu and inevitable impurities, and an amount of oil adhering to a surface of a central elemental wire disposed at a central portion of the twisted wire is 10 μg/g or less with respect to the mass of the central elemental wire.
Twisted wire and manufacturing method thereof
Provided is a twisted wire including a plurality of covered wires twisted together, each covered wire including a conductor and an insulator covering the periphery of the conductor, wherein the twisted wire satisfies Inequality (1): y<A×x/(z/500)+B (wherein x: a pitch length (mm) of the twisted wire, y: a collapsing rate (%) of the insulator, z: an elastic modulus (MPa) of the insulator, A: Constant A=−1, and B: Constant B=11.5).