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Symmetrical unshielded 48-pair cable of category 6 with improved characteristics Invention relates to the field of electrical engineering and is to be utilised for design of symmetric communication cables within a shared network or structured cable systems. A symmetrical unshielded 48-pair cable of category 6 with improved characteristics comprises strands in polymer insulation, pair-twisted breaking insulating cord and polymer shell with a ledge on its outer surface, which defines location of the breaking insulating cord under the shell, one lay comprising four bundles, in which there are three four-pair elements in each bundle, at the same time each four-pair element comprises four pairs, every of which is twisted with the chosen pitch, and three pairs are separated from each other with a polymer tube and are twisted around the fourth pair, placed into the polymer tape with overlapping of edges along the entire length of the cable, and all four pairs are placed into the polymer tape, applied with overlapping of edges also along the whole length, at the same time three such modules are separated from each other with a three-rayed polymer element and are placed into the polymer tape with overlapping of the edges along the entire length of the cable, and every such bundle is separated from three other such bundles with a four-rayed polymer separating element. |
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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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Combined symmetrical four-pair cable of category 6a with optic fibre Combined symmetrical four-pair cable with optic fibre comprises strands in polymer insulation, twisted as pairs, with an outer polymer shell, a breaking string, and each symmetric pair is separated from the adjacent symmetric pair with a module with optic fibre, as a result of which a lay is created from four modules with optic fibre, and four symmetric pairs separated from each other by modules with optical fibre, at the same time this lay is twisted with large pitch around the central hollow perforated polymer tube, the external size of which is equal to two diameters of the twisted pair, at the same time two symmetric pairs arranged on one line on opposite sides of the central polymer tube are each placed into the polymer perforated tape with coverage of edges along the entire length of the cable, and two other pairs are placed between two modules with optic fibre each, at the same time each such pair with two modules with optic fibre is placed into the polymer perforated tape with coverage of edges along the entire length of the cable. |
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Communication cable has at least one pair of conductors configured to transmit a signal, insulated from each other by inner insulation and twisted into a spiral which is coated by outer insulation such that it fills all the empty space between the insulated conductors, wherein the conductors are twisted into a spiral with pitch distance of 10-80 mm, and the inner and outer insulation is in form of high-frequency polymeric dielectric materials selected from polyolefins, which are similar to each other, with addition of a heat stabiliser - 0.05-0.2% diaphene NN and a light stabiliser - 1-3% technical carbon to the outer insulation. |
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Into a symmetrical unshielded 25-pair cable with a 5e category with improved characteristics and with optical fibres, in the first layer, comprising five pairs, a five-beam polymer separating element is introduced, separating each pair of the first layer from each other, between the first and second layers they introduce a separating perforated polymer tape with overlapping of edges along the entire length of the cable, and between the second and third layers a polymer perforated separating tape is also introduced with overlapping of edges along the entire length of the cable, at the same time, in the second layer, six polymer separating elements are introduced, which occupy the area of six pairs by section and along the entire length, separating each of six symmetrical pairs from each other in the layer, and in the third layer there are five similar separating elements introduced, four of which are separated into three symmetrical pairs between each other in the layer, besides, the fifth separating element separates two pairs from three others, at the same time five separating elements in the third layer are arranged in the form of tubular elements comprising modules with optical fibres. |
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Symmetrical four-pair cable of category 6a with improved characteristics Invention relates to the field of electrical engineering and may be used for design of symmetric and optical communication cables within a shared network or structured cable systems. In a symmetrical four-pair cable, comprising strands in polymer insulation, a breaking cord and an outer polymer shell, each symmetric pair is separated from the neighbouring symmetric pair with an introduced hollow polymer tube, as a result of which a layer is created from four polymer tubes and four symmetric pairs, separated from each other with hollow polymer tubes at the same time, and this layer is twisted with a large pitch around the central hollow polymer tube, the outer diameter of which is equal to two diameters of the symmetrical pair, besides, each symmetrical pair is placed into a polymer perforated tape with coverage of edges along the entire length of the cable, and the hollow central tube and hollow tubes between symmetric pairs have identical external diameter. |
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Balanced unshielded 25-paired cable of category 5e of bunch structure with improved characteristics Balanced unshielded 25-paired cable of category 5e with improved characteristics includes polymer-insulated cords which are twisted in pairs, and external polymer sheath; polymer corrugated and perforated tube is arranged in the centre, and twenty five pairs are divided into five bunches, five pairs in each bunch; at that, to each bunch there introduced is five-beam polymer corrugated separating element between beams of which there arranged is one pair, and each bunch is laced into perforated band with covering of edges throughout the cable length, and all of five beams are twisted between each other around central polymer corrugated and perforated tube. |
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Symmetric unshielded 25-pair cable of category 5e with improved characteristics Symmetric unshielded 25-pair cable of category 5e with improved characteristics contains strands in polymer insulation twisted into pairs to form a common core in lays as follows: three twisted pairs in the first lay, nine twisted pairs in the second lay and thirteen twisted pairs in the third pay in common polymer sheathing; each pair in the cable is twisted at a pitch different from that of the other pairs; in the first lay the pitch consists of three pairs with a triradial polymer separation element introduced separating the pairs of first lay from each other; between the first and the second lays a separation polymer tape is introduced with edge overlapping along the whole of the cable length; equally, between the second and the third lays a separation polymer tape is introduced with edge overlapping along the whole of the cable length; in the second lay a polymer separation element is introduced occupying an area of one pair in cross-section and along the whole length; introduced in the second lay are four similar separation elements, three of them separating each three pairs in the lay from each other while the fourth separating four pairs in the lay from each other along the whole of the cable length. |
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Symmetric unshielded category 5e 25-pair cable of bundled structure with improved characteristics Symmetric unshielded 25-pair cable of category 5e with improved characteristics contains strands in polymer insulation twisted into pairs to form a common core with one pair in the centre of the structure while the other 24 pairs separated into four bundles, six pairs in each; introduced into each bundle is a triradial polymer separation element between each two arms whereof two pairs are positioned twisted together at pitches different from those of each of the two other pairs between other two arms; each bundle is enwrapped into a polymer perforated tape with edge overlapping along the whole cable length; all the four bundles are twisted together round the one central pair. |
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Symmetric four-pair cable includes cords in polymer insulation, which are twisted in pairs with various pitches, with outer polymer sheath; one of the pairs is central in polymer dividing band; three other pairs are twisted around it, each of which is separated with polymer element the dimensions of which are restricted with diameter of the pair, and separating polymer band is put on central pair so that edges are overlapped throughout the length. |
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Symmetrical fire-resistant cable Invention is related to cable technology, to symmetrical fire-resistant cables for transfer of high-frequency signals in communication systems, industrial automation and systems of fire protection alarms in nuclear power plants, in particular inside containment. Cable comprises at least one symmetrical pair of current-conducting strands insulated by fire-resistant organosilicic rubber and polyimide film, covering each of insulated strands, and separating them with single layer. At the same time film fixes insulated strands between each other, providing permanent symmetry of pair along cable length. |
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Invention relates to the field of electrical engineering and is to be utilised for design of symmetrical communication cables within a shared network or structured cable systems. Concept of the invention is as follows: the symmetrical four-pair cable consists of cores with membranous-and-porous film insulation twisted into pairs and into a general lay contained in an outer sheath of a polymer material; insulation of each core within the porous layer and the membranous layer contacting each core is perforated along the whole length within each layer at an independent pitch. |
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Sealed and balanced high-frequency cable Proposed cable has sequentially arranged core incorporating at least two pairs of polyethylene covered stranded conductors, filler in the form of low-molecular rubber based sealing composition, shield, and sheath with mentioned filler in-between. This composition is, essentially, compound incorporating 100 parts by mass of rubber SKTN and 3-5 parts by mass of catalyst; the latter has 7 mass percent of γ-aminopropyl triethoxysilane and 93 mass percent of ethyl silicate; these pairs are placed longitudinally throughout entire cable length inside filler All air gaps are filled up (no water penetrates along cable). |
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High-frequency balanced shielded cable Proposed cable has core formed by polyethylene or porous polyethylene insulated conductors twisted together to form pair and filler disposed between insulated conductors and cable shield covered with sheath on top. Used as filler are untwisted fibrillated polypropylene threads longitudinally disposed throughout entire cable length. In wiring this cable needs bending through very small radius (below ten-fold of cable outer diameter. |
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Vapor-tight cable for high-speed communications and its manufacturing process Proposed multiple twin cable designed to prevent vapor transfer when immersed in petroleum oil has internal and external sheaths that cover insulated signal-transferring conductors and are made in the form of helical structure. Core filler fills up core and spaces between signal transferring conductors. Core filler and internal sheath are made of vapor-tight material and fixed to insulated conductors so that they fill up all grooves and slots around signal transferring conductors. External gas-tight sheath can be provided to make it possible to immerse cable in petroleum oil for long time intervals without impairing its functional capabilities. |
Another patent 2513450.