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Radiation-curable polymer composition for wire coating Invention relates to a radiation-curable polymer composition for wire coating. The composition contains (A) 30-80 wt % mixture of urethane (meth)acrylate, having a structure derived from an aliphatic polyol, and a urethane (meth)acrylate, without a structure derived from a polyol, (B) 15-60 wt % compound having a cyclic structure and one ethylenically unsaturated group selected from isobornyl methacrylate, bornyl methacrylate, tricyclodecanyl methacrylate, dicyclopentanyl methacrylate, benzyl methacrylate, 4-butylcyclohexyl methacrylate, acryloylmorpholine, vinylimidazole, vinylpyridine, and (D) 0.01-1 wt % compound (4a), which is a phosphoric ester. |
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Electroconductive heat-resistant phosphate composite material Electroconductive heat-resistant phosphate composite material contains aluminophosphate binder, filler in form of a mixture of aluminium oxide and aluminium nitride and a modifying additive in form of carbon nanotubes, with the following ratio of components of the composite material, wt %: aluminophosphate binder - 14-16, carbon nanotubes - 0.5-2, filler (Al2O3-AlN) - the balance. |
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End structure and method of end processing of shielded electric wire In shielded electric wire (1) flat braided wire (3) is spirally wound on outer side of electric wire (2), outer surface of electric wire (2) is coated with insulation cover (4), distal end frame (5) of braided wire (3) is located in a straight-line manner in an axial direction of the electric wire along inner surface (4b) of the insulation cover, and distal end frame (5) and two side edges (6, 7) in the direction transverse to braided wire (3) intersect in inclined state. Distal end side (4a) of insulation cover (4) is removed; braided part (3a) on distal end side of braided wire (3) is open, and at least some part (8) of crossing, where distal end side (4a) crosses side edge (6) located in a transverse direction opposite to distal end (2a) of electric wire (2), is pressed at a blunt angle to inner surface (4b) of insulation cover (4). |
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Coating comprises an adhesive sublayer of a thermoplastic adhesive and a functional layer of a nanostructured composite material based on polyethylene. The composite material of the functional layer has a polyethylene matrix and montmorillonite particles dispersed in the matrix in amount of 0.1-2 wt %. |
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Conductive material for flooring and method of its preparation Invention relates to conductive material for flooring, comprising electroconductive anti-deformation layer, which includes conductive fibres, comprising glass fibres and carbon fibres, and to the method of its preparation. Conductive material applied not only in the form of blocks, but also in the form of long sheets, is suggested in the present invention due to the fact that the conductive fibres include glass fibres and carbon fibres, besides the content of carbon fibres is from 3 weight parts to 30 weight parts per 100 weight parts of glass fibres. |
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Casting resin system for insulators with higher heat resistance Claimed invention relates to the field of casting resins for switching devices. Described is a solid resin system for insulating materials in the switching devices, which contains a solid bisphenol A-based resin, which has an epoxy number (DIN ISO 16945) from ≥0.2 to ≤0.3, and a liquid bisphenol F-based resin, which has an epoxy number (DIN ISO 16945) from ≥0.4 to ≤0.63, where a part of the liquid bisphenol F-based resin, measured as a weight to the total weight of the resin, constitutes from ≥5% to ≤60%, with the solid resin system before hardening having an epoxy number (DIN ISO 16945) from ≥0.2 to ≤0.55, and the solid resin system includes as resins only the said resins themselves. Also described is application of the said solid resin system as an insulating material in electric switching devices. |
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Umbilical cable for continuous movement in well and method of its use Suggested umbilical cable has channels along the whole its length filled with working media of low density as well as functional components representing components of the umbilical cable required for insulation, strength and transmission of different media - liquids, gases, electric energy and data. At that a solid body, liquid, gas or their combination may be used as working media. Characteristic property of the umbilical cable consists in that the channels filled with working media are interconnected by their ends. At that the above working media have different density and divided by elastic pistons. Besides, the umbilical cable can contain additional dummy channels permanently filled with working medium of low density. The invention also suggests the method for delivery of a subsurface device to the well survey interval by the above umbilical cable. |
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Nb3sn -based superconducting wire Nb3Sn-based superconducting wire includes multi-core including Nb3Sn composition and niobium and/or tantalum-based diffusion barrier layer on the core surface, and external shell out of copper or copper alloy, so that a nanocomposite Cu-Nb layer including 5 to 30% of Nb and mechanical strength of 1000 to 2000 MPa is placed between diffusion barrier layer and external shell, and ratio of nanocomposite layer and external copper shell layer areas in wire cross-section is 0.1 to 9. |
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Method of conductive layer forming on carbon nanotube base Invention refers to electrical engineering, particularly to methods of conductive layer formation used in wide range of technics, including electronics or electrical equipment, and can be applied to form conductive links in microcircuits. Method of conductive layer formation on carbon nanotube base involves application of suspension of carbon nanotubes and carboxymethyl cellulose in water onto substrate, with the following component ratio, wt %: carboxymethyl cellulose 1-10, carbon nanotubes 1-10, drying at 20 to 150°C, pyrolysis at temperature over 250°C. |
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Electrical conductor for high-current bushing insulator Electrical conductor (S) is intended to pass rated current in a high-current bushing insulator of a power plant transformer mounted in the current circuit between the generator and primary windings of the transformer at the generator circuit-breaker. The conductor has the main section (30) passing along the axis (A) and a shell with a cylindrical surface and two electrical leads (10, 20), at that the first lead (10) has two parallel contact surfaces (11, 11'). According to the invention the second lead (20) out of two electrical leads (10, 20) is coupled without connection to the main section (30) of the conductor and the first electrical lead (10) is made hollow and placed perpendicular to the axis (A), it has an oval shape with two longitudinal front faces, which form two contact surfaces (11, 11'). Between the first electrical lead (10) and the main section (30) of the conductor there is a hollow section (40) of the electrical conductor that connects the electrical lead (10) to the main section (30) of the conductor forming a smooth transition from two contact surfaces (11, 11') of the first electrical lead (10) to the shell surface of the conductor main section (30). |
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Method of producing ceramic conductor, system for producing same and superconductor using same Invention relates to a ceramic conductor. In the disclosed method, a ceramic precursor film is deposited on a conductor substrate. The conductor substrate with the deposited ceramic precursor film is then heat treated. Heat treatment of the conductor substrate includes controlling temperature of the conductor substrate and/or oxygen partial pressure of the conductor substrate such that the ceramic precursor film is in a liquid state, and an epitaxial ceramic film forms from the liquid ceramic precursor film on the conductor substrate. |
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Superconductive multiphase cable system method of its manufacturing and application Invention is related to superconductive multiphase cable system of direct or alternating current for the purpose of electric energy distribution with fluid cooling, and the system contains a) a cable with at least three electrical wires being at least three phases and a zero or neutral wire, at that the above electrical wires are isolated from each other electrically and b) heat insulation setting the central longitudinal axis and having inner surface surrounding the cable, at that the above inner surface of the above heat insulation forms a radial limit for the cooling chamber intended for cooling of fluid used for cooling of the above electrical wires. The invention is also related to the method of the cable system manufacturing and its application. |
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Casting compound includes an epoxy diane resin ED-20 in an amount 100 wt. p., a hardener, a plastisiser - trichloroethylphosphate (TCEP) and a filling agent - crushed basalt with a particle size of 125-315 mcm, and as a hardener it contains polyethylenepolyamine PEPA with the following component ratio, wt. p.: epoxy diane resin ED-20 - 100, polyethylenepolyamine PEPA - 10-15; trichloroethylphosphate TCEP - 20-30; crushed basalt - 40-60. |
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Invention is related to high-voltage engineering and, in particular, to high-voltage bushing insulators to ensure electrical insulation of conductor. The invention develops the electric bushing insulator which contains at least, two sheets of conductive foil placed concentrically around the conductor seat; and at least one FGM-part made of the material intended for field balancing and at least part of the edge (205/405) of the conductive foil sheet, at least partially elongated; the FGM-part and conductive foil sheet at which extension the FGM-part is placed are in electric contact with each other. |
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Invention relates to a polyolefin composition with improved dielectric strength of insulation, to a wire or cable, in particular to a cable of middle, high or superhigh voltage, which includes such composition, as well as to application of such composition for production of wire or cable, in particular a cable of medium, high and superhigh voltage. Polyolefin composition contains polyolefin (A) and benzyl derivative (B) of a certain structure. Benzyl derivative (B) is used in the polyolefin composition as an additive for stabilisation of dielectric strength. |
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Invention suggests a shielded wire which can be used as a winding wire or a wire of a multi-wire cable including an elongated conductor (3), an insulating layer (2) and a shielding layer (1), which enclose the elongated wire (3), at that the shielding layer (1) contains a magnetisable powder and binding agents of the insulating material. The insulating layer (2) adjoins the elongated conductor (3) and the shielding layer (1) adjoins the insulating layer (2) directly. |
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Strip high-temperature superconductors Invention is related to technology of strip high-temperature superconductors based on mixed yttrium-, barium- and copper oxides (YBCO) and it can be used during design and manufacturing of high-temperature superconductors of the second generation, in particular, for pulse magnet systems and other installations where superconductors with high mechanic strength are required. The target of the claimed invention is to develop a reliable structure of a high-temperature superconductor with high conductivity and mechanical strength more than 1000 MPa, which is intended for use in superconducting power cables. The high-temperature superconductor includes a textured strip substrate with a buffer layer, a high-temperature superconductor (HTS) layer, protective coating of HTS layer applied in-series as well as strip metal coating soldered at both sides, at that the strip coating is made of nanocomposite material Cu-Nb which contains from 5 up to 30% of Nb and has mechanical strength from 400 MPa up to 1000 MPa. |
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Device and method for raw material discharge Invention relates to device and method for raw material discharge for cable production line. The device contains opening (11) connected with cable production line to charge raw material into cable production line. Charging opening (11) is made with possibility to connect it with discharge neck (2) of raw material container. Additionally, the device contains packing means to open and close charging opening (11) after connecting discharge neck (2) with charging opening (11). |
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High-voltage and high-power connecting cable Invention is related to high-voltage and high-power connecting cable. A power cable (10) contains a metal conductor placed into the first outer shell (11) and additionally, along the whole cable length, it is placed into the second outer shell (12, 13, 14) which is deposited on top of the first shell and placed in three separate sections of the cable, and namely in the middle and the areas joining its both ends thus preventing deformation of the cable at mechanical loading. |
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Method of producing semiconducting rubber glass fabric Cold curing catalyst is used to cure an impregnating compound deposited on a glass fabric and containing carbon filler, siloxane rubber and an organic solvent. Percentage content of the catalyst relative to the siloxane rubber, needed to cure the impregnating compound in the drying chamber of an impregnating machine, is established depending on the length of the chamber, the speed of movement of the glass fabric and temperature in the drying chamber. The established amount of the catalyst is divided into a part which is directly added to the impregnating compound and a part which is added to the glass fabric before being passed through a bath of the impregnating machine. |
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This invention relates to an electroconductive heat release material. The above specified electroconductive heat release material comprises a substrate and an electroconductive heat release layer, practically evenly applied on the above substrate. The above electroconductive heat release layer is formed from electroconductive heat release paint, which includes an electroconductive heat release material and a binder. The specified above electroconductive basic material is selected from the group including natural graphite, artificial graphite or electroconductive carbon soot; the specified above binder is selected from the group, which includes acrylic resin, epoxide resin, polyurethane, melamine, gelatin, carboxymethylcellulose and polyvinyl alcohol. In some versions of realisation the substrate is paper. The above specified electroconductive material may be used to make a laminate floor cover with electric heating, surface temperature of which may be increased to 15-70°C for 5 minutes as power is supplied from a source with voltage of 220 V, at the same time this temperature may be maintained permanent within the long period of time. |
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Wire for high-voltage transmission lines In a wire for high-voltage transmission lines containing the central aluminium base with grooves in which thermoplastic tubes with optical fibre contained in it are placed, there is an inner layer formed out of twisted Z-shaped aluminium wires and placed concentrically above the central aluminium base, an outer layer formed out of twisted Z-shaped aluminium wires and placed concentrically above the inner layer. At that shapes of Z-shaped aluminium wires and direction of their winding in layers are opposite to each other, and at contact surfaces, between the layers, the inner and outer surface have toothed protrusions forming continuous lines along the whole wire length, at that the toothed protrusions may lean to each other when torsion torque occurs in the outer layer. |
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Antistatic or electroconductive polyurethanes and method of their obtaining Invention can be used for manufacturing coatings, drums, rollers and wheels. Method of obtaining antistatic or electroconductive components from reactoplastic polyurethanes includes admixing carbon nanotubes to compounds (B), containing groups, active with respect to NCO-groups, and to polyisocyanates (A), mixing components, obtained at the first stage, application of mixture on substrate or into mould and its hardening. |
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Electric equipment, containing dielectric oil with erucic acid Claimed invention relates to composition, suitable for application in electric equipment, containing dielectric liquid. Claimed dielectric composition includes oil component, with oil component containing crambe oil and/or rapeseed oil with high content of erucic acid, as well as etherified crambe oil and/or etherified rapeseed oil with high content of erucic acid, with oil component having content of erucic acid at least 45 wt %. Introduction of esters, claimed in accordance with claimed invention, makes it possible to reduce oil component viscosity. |
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Superconducting multi-cored strip conductor for alternating and direct current Superconducting multi-cored strip conductor of rectangular cross-section contains a matrix of stabilising material with superconducting current-carrying parts placed in it, superconducting current-carrying parts and an external insulating shell; according to the invention in the matrix of the superconducting strip conductor there are superconducting current-carrying parts of circular section, which are placed in the same plane, at that width of the strip conductor is defined by the following ratio: B=Nccpπdccp., and the distance between longitudinal axes of the neighbouring current-carrying parts is equal to: a = в N c c p , where dccp is a diameter of a current-carrying part, Nccp is a number of the current-carrying parts in the conductor. |
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Electrically conductive solid composite material and method of obtaining it Invention relates to electrically conductive solid composite material, which contains solid matrix from electrically insulating material and filling agent from electrically conductive material, where filling agent includes nanoparticles, called filamentous nanoparticles, which have length, measured in main direction of elongation, two dimensions, called orthogonal dimensions, located in directions, intersecting and orthogonal with respect to each other, and orthogonal with respect to main direction of elongation, and orthogonal dimensions are smaller than said length and constitute less than 500 nm, and two ratios, called shape coefficients, representing ratio of length to each of two orthogonal dimensions, where shape coefficients are higher than 50, with filamentous nanoparticles being distributed in solid matrix volume in quantity, constituting less than 10 vol.%, in particular less than 5%. |
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Method of producing solid semiconductors with addition of doping admixtures in crystallisation Invention relates to production of solid semiconductors, particularly, to silicon as ingots or strips used for fabrication of photovoltaic element substrates. Proposed method comprises the stages of semiconductor melt preparation from the semiconductor first portion including doping admixtures and solidification of fused semiconductor. Additionally, it comprises addition in one or several steps during solidification of extra semiconductor portions also containing doping admixtures to semiconductor melt. |
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Resistive composite includes sodium metasilicate, graphite, grinded silicon carbide and barium titanate with the following ratio of components, wt %: sodium metasilicate 3-5, graphite 12-16, barium titanate 17-22, silicon carbide 57-68. |
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Gas-insulated power transmission line Gas-insulated power transmission line contains a cylindrical shell (1) filled with gas and a current-carrying tube (2) placed in it and fixed by base insulators (3) mounted at the inner surface of the shell (1). A butt end (4) of the base insulator (3) is entered into the current-carrying tube (2) through an opening (5) in its wall and covered by a screened tip (6) which top (7) is fixed in the wall of the current-carrying tube (2) opposite the above opening (5). The opening (5) is wider than the screened tip (6) and its edge (8) is flanged so that it can be fixed in the opening (5). The current-carrying tube (2) and the screened tip (6) can be made of the same metal. |
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Busbar system with first and second wires of bundled phase Invention is related to busbar system. Busbar system has a section (3) of collecting buses. The section (3) of collecting buses passes along the longitudinal axis (2) and is surrounded by an enclosed casing (1). The section of collecting buses has the first and second wires (4, 5, 6) of bundled phase. There is a gap (7, 8) between the wires (4, 5, 6) of bundled phase. The wires (4, 5, 6) of bundled phase in their cross-section limit a circular enveloping line. The wires of bundled phase are interconnected inside the enveloping line by braces. |
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Cable assembly of extended length for use in hydrocarbon wells Invention relates to operating cables placed in hydrocarbon wells. The invention suggests a cable assembly for use in a hydrocarbon well of extended depth containing at least one well-head part and at least one bottom-hole part connected to each other. At that the well-head part of the cable has more tenslie strength in comparison with the bottom-hole part. Besides the well-head and bottom-hole parts of the cable have structural windings. Herewith quantity of structural windings in the bottom-hole part is less than quantity of structural windings in the well-head part per 30% at least. |
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Application method of insulation coating on metal wire Method involves application of an adhesive layer based on a thermoplastic adhesive and further application of a functional layer from nanostructured polymer composite material based on polyethylene with disperse filler from montmorillonite. The adhesive layer is applied by wire drawing through molten thermoplastic adhesive. The functional layer is applied by extrusion. |
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Invention is referred to power transmission equipment, in particular, to fixtures of live wires, parts and nods in regard to bearing structures, for example, power transmission towers, i.e. to insulators. Insulator contains an insulating element, end terminals, and at least one skirt made of dielectric and installed at insulating element; it passes along and/or around longitudinal axis of the insulator and covers at least lateral sides of end terminals. |
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Invention is referred to electric cable with in-built strain-gage fit specifically to measure static and dynamic deformations, in particular, bending strain. Method of bending strain control for electric cable includes stages of the cable equipment with peripheral and mechanically unsymmetrical bearing element having higher resistance to tensile loads than to compression ones and with fibre-optical sensor. |
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Electric cable with strain-gage located longitudinally along the cable and containing strain-gage optical fibre installed in flexible neutral area that surrounds and includes flexible neutral longitudinal axis of the electric cable, and at least two longitudinal structural elements where at least one of at least two longitudinal structural elements represent a core containing electric conductor with strain-gage in-built into filler resistant to strain; it connects at least one of at least two longitudinal structural elements with strain-gage. By means of open cable structure strain endured by at least one of at least two longitudinal structural elements can be transmitted to strain-gage at least in stretched state. In preferred variants of implementation the electric cable represents high-duty cable. Invention is also related to control method of strain and, preferably, temperature of electric cable. |
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Semiconductor band with improved chemical resistance Invention relates to production of semiconductive materials used for corona shielding of high-voltage windings of electrical machines. The invention suggests semiconductive band containing fibrous substrate with semiconductive compound applied on it including (wt %): chlorosulphonated polyethylene (6.5-12.0), epoxy resin (0.5-3.0), curing agent (0.01-0.2), current-carrying filler (6.0-40.0) and organic solvent (remains). |
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Semiconductor band with improved elasticity Invention relates to production of semiconductive materials used for corona shielding of high-voltage windings of electrical machines. The invention suggests semiconductive band containing fibrous substrate with semiconductive compound applied on its top including current-conductive filler and polymer binding agent made of chlorosulphonated polyethylene mixed up with polyfucntional and multifunctional epoxy resins, anhydride and aerosil. |
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Semiconductive band with adhered layer Semiconductive band represents material with fibrous substrate saturated with current-carrying compound and current-carrying adhered layer. Adhered layer is made of latex based on carboxylated acryl copolymer or vinyl acetate and acrylic ester copolymer with current-carrying compound such as carbon black, graphite, silicone carbide. |
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Copper alloy and method of its production Copper alloys is produced at adding hexagonal-system graphite to high-temperature medium at 1200-1250°C in amount sufficient for obtaining the copper alloy with carbon content of 0.01-0.6 wt %. |
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Electroconductive lubricant "uvs superkont" Invention relates to an electroconductive lubricant, containing mineral oil, additive, metal powder, such as a highly dispersed copper powder, a stabilising additive. The lubricant additionally contains a thickener, such as ethyl cellulose, at the same time the additive is an organic matrix, which represents salts of high-molecular organic compounds (soap) and higher organic fatty acids, and the stabilising additive is a 30% solution of benzotriazole in acetone at the following content of components, wt %; organic matrix 40, highly dispersed copper powder 30, thickener 20, stabilising additive 5, mineral oil - balance. |
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Invention relates to conductive pastes for forming metal contacts on the surface of substrates for photovoltaic cells. The conductive paste is substantially free of frit glass. According to one version of the invention, the conductive paste contains organometallic components which form a solid metal oxide phase upon firing and conductive material. The organometallic components are selected from a group which includes metal carboxylates or metal alkoxides, where the metal is boron, aluminium, silicon, bismuth, zinc or vanadium. According to another version, the conductive paste includes multiple precursors which form conductive elements upon firing or heating. The paste is adapted for adhesion to the surface of a substrate and upon firing, forms a solid oxide phase while forming an electrical conductor from conductive materials on the substrate. |
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Electric insulating liquid is proposed, which represents a fluorine-containing dielectric liquid for electric insulation of high-voltage electric equipment, differing by the fact that the dielectric liquid comprises 99.95% of di(octafluoropentyl) ether and 0.05% admixtures of polar gases. |
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Method involves separation of a cable into electrical strands in a polymer sheath, steel wire and processing of steel wire pieces into reinforcement elements and with that, separation of steel wire from the electrical strand in the polymer sheath is performed by cutting of steel wire into pieces as a part of the cable along one or two mutually opposite located constituents of the cable by means of adjustable drive disc knives, bending of the cable on rollers and separation of the remained wire pieces from electrical strands by a cutter, and transportation of wire pieces is performed by a vibrating tray with an annular screw-shaped route; deformation of wire pieces is performed by a gear pair having a tooth in the section of a semi-cylindrical shape so that deformation of wire pieces with rollers is provided. |
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Invention relates to a sealed dispensing apparatus, having a housing (4) which forms an insulating space (6) and an electrical active part (8, 9, 11a, 11b, 11c) situated in the insulating space (6), said insulating space (6) having an insulation medium. The dispensing apparatus is characterised by that the insulation medium contains a dielectric compound with boiling point higher than -25°C, which is a fluoroketone having 4-12 carbon atoms. |
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In a communication cable, having at least two pairs of twisted, insulated current conductors, coated with an external insulation with an air space inside, the external insulator is made with fastening element in form of a strap and/or loop which enables to mount the cable directly to the bearing structure. |
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Invention relates to insulation tape used, primarily, at conveyor belts in production of plastic bags and including insulation cord, film of complex polyether coated on both sides with cellulosed layer and layer of insulation material arranged on at least one of flat sides. Note here that insulation material comprises lacquer and additive including silicic acid and polyether-wax. |
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Silanol-crosslinkable composition for cable insulation Invention relates to crosslinkable compositions based on polyolefins and copolymers thereof and modifiers for producing silanol-crosslinkable polymer compositions which can be used to produce film coatings, insulation and sheaths for cables and conductors for different purposes. The silanol-crosslinkable composition contains polyolefin, vinyl alkoxysilane, organic peroxide and a sheet silicate which is modified with resorcinol resin with ratio of the resorcinol resin to the sheet silicate of 6:10 pts.wt. |
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Symmetric four-pair cable of category 6a with five special optical modules Symmetrical four-pair cable of category 6A with five special optical modules comprises strands in polymer insulation, twisted into pairs, with an external polymer shell, a breaking insulating cord, and each symmetrical pair is separated from the adjacent symmetrical pair by a special module with optic fibres, as a result of which a lay is created from four special modules with optical fibres and four symmetrical pairs separated from each other by special modules with optical fibres and twisted around the special module with optical fibres. Each special optical module comprises two fibres placed into a cavity of the polymer element of round shape in the form of an eight, in each largest part of the eight there are dielectric power elements. |
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Invention is related to a dielectric insulation medium, which contains fluorine ketone in gas condition, not necessarily with air or at least an air component as a carrier gas, which may be used for insulation of high-voltage equipment, in particular, distribution devices and transformers. The proposed insulation medium is characterised by the fact it contains fluorine ketone, having from 4 to 12 atoms of carbon, with a boiling point, at least - 5°C. Also the medium or high-voltage distribution device is proposed, in which the proposed insulation medium contained in the insulating space, is distributed in it in accordance with the temperature gradient. |
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Device comprises an anti-corona screen and at least one support element for connection of the anti-corona screen with the high-voltage device. This support element comprises a semiconducting polymer, which in the working condition acts as a resistance between the anti-corona screen and the high-voltage device. Besides, the support element is made as capable of fixation of the anti-corona screen on the high-voltage device. |
Another patent 2513242.