RU103968U1 - MOUNTING CABLE PREVIOUSLY EXPLOSION-SAFE FOR HIGH-SPEED AUTOMATION SYSTEMS (OPTIONS) - Google Patents

Abstract

 1. The mounting cable is predominantly explosion-proof for high-speed automation systems, consisting of a core, including an even number of polymer-insulated single-wire or multi-wire copper or copper tinned conductive conductors, twisted together in pairs, a common screen laid on top of the core, and an extruded polymer moisture-proof sheath, characterized in that the insulation of conductive conductors is made of alternating layers of continuous and porous polyethylene combined, and the cross section the lead veins are selected from the range 0.35, or 0.5, or 0.75, or 1.0, or 1.2, or 1.5 mm2, with a cross section of 0.35 mm2 corresponding to a range of permissible insulation thicknesses from 0, 25 to 1.2 mm, section 0.5 mm2 - thickness range from 0.25 to 1.3 mm, section 0.75 mm2 - thickness range from 0.25 to 1.5 mm, section 1.0 mm2 - range thicknesses from 0.3 to 1.6 mm, a cross section of 1.2 mm2 - a range of thicknesses from 0.3 to 1.8 mm, a cross section of 1.5 mm2 - a range of thicknesses from 0.35 to 2.0 mm. ! 2. The cable according to claim 1, characterized in that water blocking threads are additionally introduced into the air spaces of the core. ! 3. The cable according to claim 1, characterized in that on each pair and on the core an additional belt insulation is applied in the form of a winding with a polymer tape with overlapping. ! 4. The cable according to claim 3, characterized in that water blocking threads are additionally introduced into the air spaces under the waist insulation of each pair. ! 5. The cable according to claim 1, characterized in that the common screen is made of a metal-polymer tape applied longitudinally or in the form of a winding with metal overlap inward with a drainage core made of copper or tinned copper wires laid under the screen. ! 6. The cable according to claim 1, characterized in that the overall ek

Description

The invention relates to cable technology and can be used in cable designs used in high-speed industrial automation systems, for example, under the name RS-485, mainly for use in hazardous areas.

In modern production, the question often arises of increasing the speed of information exchange between various objects, which is expressed in increasing the transmission speed in the system and, accordingly, the frequency range of signal transmission. This led to the development of industrial automation systems RS-485, described by the American standard "Appendix to the manual for TIA / EIA-485-A". The system is based on the use of one pair of isolated conductive wires as the main signal transmission line (bus) to which one control device (master) and up to 32 controlled (slave) are connected in parallel.

A feature of these systems is that the bus at both ends must be shorted to a special resistance (terminator) equal to the wave impedance of the bus (cable). Although the nominal impedance is not standardized by this standard. As an example, cables with wave impedances of 120 Ohms, 100 Ohms and 60 Ohms are shown. The transmission speed of digital signals in such systems is normalized to 10 Mbit / s. Developed under this standard and commercially available cables brands KIPEV section of 0.22 mm ² and KIPEV section 0.35 mm ² produced by ZAO NPP "SPETSKABEL», №9841-9844 section 0.22 mm ^2, and №5340FT №6340 FT-section 1 , 0 mm ² and No. 3105A with a cross section of 0.5 mm ² manufactured by Belden USA, P / N9FY7FILXXX and P / N9822702101 with a cross section of 0.22 mm ² and 9392102XXX with a cross section of 0.35 mm ² manufactured by Teldor Israel. Insulation made of continuous polyethylene or combined from alternating layers of continuous and porous polyethylene. The nominal value of the impedance of the listed cables is 100 or 120 Ohms.

Further improvement of automation systems led to the publication of IEC 61158-2 (May 2003), which formulated the requirements for a low-speed system (up to 76.8 kbit / s, RS-485 type 4) and a high-speed system (up to 5 Mbit / s, RS-485 type 6). Moreover, the cable requirements contain a range of permissible impedance values: for low-speed systems, the impedance should be in the range from 100 to 120 Ohms at a frequency of 1 MHz with a minimum cross-section of conductive wires of 0.22 mm ² , for high-speed systems, the impedance should be in the range of 135 to 165 Ohms at frequencies from 3 to 20 MHz and a minimum section of conductive conductors of 0.34 mm ² . The wave impedance is uniquely associated with the diameter (cross section) of the conductive conductors and the thickness of the insulation, at a given value of the dielectric constant insulation. Therefore, with the selected cross section and the required wave resistance, the nominal insulation thickness is given. At the same time, the permissible spread of deviations from the nominal insulation thickness is an ambiguous parameter, depending on many factors.

Cables for low-speed systems with the same cross-sections of conductive wires and the same insulation materials have a smaller average insulation thickness, smaller structural dimensions and material consumption than cables for high-speed systems, and, accordingly, are more economical. However, cables of high-speed systems are more profitable for large flows of information. Thus, cables for low-speed systems and cables for high-speed systems have different applications, determined by the economic components of specific objects. Further, we will focus only on cables for high-speed systems.

The cable for high-speed automation systems meeting the requirements of IEC 61158-2 is known from the LEONI KERPEN catalog on the website. The cable contains one pair of insulated conductive wires twisted together.

Conductors can be made single-wire with a diameter of 0.64 mm (cross-section 0.32 mm ² ) or multi-wire from tinned copper wires, the insulation is made of a combination of alternating layers of solid and porous polyethylene. The pair is shielded by a metal-polymer screen with a drainage core under a metal layer. The shells may be made of light stabilized polyvinyl chloride plastic compound or of a polyethylene composition. Also known is an armored structure, with armor made of galvanized steel wires with a moisture-proof hose made of PVC compound. The nominal value of the wave impedance is 150 Ohms.

In automation systems, the so-called slave devices, in addition to the information function, often perform an executive function. For example, a valve (or valve), which has an information block with sensors of controlled parameters, also performs the function of blocking the flow of gas under pressure or oil products in pipes that require significant mechanical effort, and, therefore, consumed electricity.

The disadvantage of the above cables is that they serve only to transmit information signals. At the same time, electricity is transmitted through other cables.

From communication theory (Yu.S. Shinakov, Yu.M. Kolodyazhny, “The Theory of Transmission of Telecommunication Signals”, M., “Radio and Communication”, 1989), it is known that signals of different frequencies can be transmitted simultaneously on one pair of wires, and at the other end of the line are separated by filters. In computer networks, power is supplied via data cables at present. However, since the power consumption of computers in such networks is small, the power supply is carried out via an information cable without making structural changes to it.

In automation systems, the power consumed by actuators varies considerably and is large enough, therefore, a constructive change in information cables is required. From the theory of power cables (Yu.T. Larina “Power cables and cable lines”, M., “Energoatomizdat”, 1984) it is known that the transmitted power is determined by the current flowing through the cable, and the current is determined by the design parameters of the conductive wires and the material insulation, limiting the current (due to the heat released in the veins) to the maximum allowable thermal regime.

So, for example, when using insulation made of PVC compound, the maximum permissible continuous temperature of the conductive core is 80 ° C. Therefore, if it is necessary to increase the transmitted power through the cable, use a cable with conductive conductors of a larger cross section. A number of such sections are standardized in GOST 22483-77 "Conductors made of copper and aluminum for cables, wires and cords. Key parameters, technical requirements. ”

Thus, for use in RS-485 automation systems, a number of cables appear for which the appropriate insulation thickness with some maximum permissible deviations from it must be selected to the normalized section of conductive wires in order to satisfy the requirement of simultaneous transmission of power and information signals, including, in digital form.

The essence of the proposed utility model is expressed in the creation of an assembly cable that is predominantly explosion-proof for high-speed automation systems, providing the possibility of simultaneous transmission of electrical energy (of different levels) with the transmission of information signals in automation systems RS-485 type 6 in accordance with IEC 61158-2.

The technical result is achieved by the fact that the installation cable is predominantly explosion-proof for high-speed automation systems, consisting of a core with an even number of polymer-insulated single-wire or multi-wire copper or tinned copper conductive conductors twisted together in pairs, a common screen laid on top of the core, and an extruded polymer moisture-proof cable shell.

The difference is that, depending on the type of insulating polymer, as well as on the presence of an individual screen that limits the electromagnetic field near the working pairs of cores (cores twisted together), which, especially at high frequencies, significantly affects the electrical parameters, for each of a number of values of the cross sections of the conductive conductors, an acceptable range of insulation thicknesses is selected, which ensures that for this cable, the value of the wave resistance in the range from 135 to 165 Ohms in the frequency range from 3-20 MHz.

Due to the fact that two types of insulating polymers and two types of structures with individual screens and without them are used, the application for a utility model is presented in four variants.

In the first embodiment, the insulation is made of alternating layers of continuous and porous polyethylene combined and there are no individual screens. The use of insulation from alternating layers of continuous and porous polyethylene is advisable when laying cables in areas located in open areas where fire safety requirements are not imposed (for example, for connecting actuator sensors along pipelines). A cable with such insulation has a minimum attenuation coefficient, which allows it to be laid in areas of greater length. The cross-section of conductive conductors is selected from the range 0.35 or 0.5, or 0.75, or 1.0, or 1.2, or 1.5 mm ² . Moreover, a cross section of 0.35 mm ² corresponds to a range of permissible insulation thicknesses from 0.25 to 1.2 mm, a cross section of 0.5 mm ² - a thickness range from 0.25 to 1.3 mm, a cross section of 0.75 mm ² - a range thicknesses from 0.25 to 1.5 mm, a cross section of 1.0 mm ^{2 - a} range of thicknesses from 0.3 to 1.6 mm, a cross section of 1.2 mm ² - a range of thicknesses from 0.3 to 1.8 mm, cross section 1, 5 mm ² - a range of thicknesses from 0.35 to 2.0 mm.

In order to prevent the spread of moisture along the core in case of damage to the moisture-proof outer covers, it is advisable to introduce water blocking threads into the air gaps of the core.

In order to prevent melting of the insulation when applying a moisture-proof sheath on each pair and on the core, it is advisable to impose a belt insulation in the form of a winding with a polymer tape with overlapping.

To prevent the spread of moisture under the belt insulation of pairs in case of damage to the moisture-proof outer covers, it is advisable to introduce additional water-blocking threads into the space limited by the zone insulation of pairs.

In order to protect against external electromagnetic influences, mainly in the high frequency range, it is advisable to make a common screen from a metal-polymer tape imposed longitudinally or in the form of a winding with metal overlap inside with a drainage core made of copper or tinned copper wires laid under the screen.

In order to protect against external electromagnetic influences, mainly in the low frequency range, it is advisable to perform a common screen in the form of a braid of tinned copper or copper wires.

In order to protect against external electromagnetic influences in a wide range of frequencies, covering both low and high frequencies, it is advisable to make the common screen in the form of a braid of tinned copper or copper wires, and additionally lay a layer of metal-polymer tape longitudinally or with a metal winding overlaid under the braid.

In order to compact the core formation and improve the manufacturability of the design with the number of pairs more than one, it is advisable to twist the pairs in the core together, and in order to provide additional protection against mutual electromagnetic influences of the pairs in the core, the twisting steps in adjacent pairs should be performed mutually unequal and mutually multiple. For the same purpose, the twisting steps of pairs are limited in length - not more than 100 mm.

In order to protect against moisture when laying in an open area in cable ducts and when hanging along structures, as well as from solar radiation, it is advisable to make the cable sheath from light-stabilized polyethylene or polyurethane. Moreover, a cable with a sheath of light-stabilized polyurethane is advisable to use in the case of suspension in the presence of wind loads.

To prevent the spread of moisture under the moisture barrier in case of violation of its integrity, it is advisable to lay a water blocking layer under the membrane.

For operation under conditions of crushing forces acting on the cable in order to ensure radial strength, it is advisable to lay armor in the form of a braid from round galvanized steel or galvanized steel wires or longitudinally from metal-polymer corrugated tape with overlapping over the moisture-proof sheath, and to protect the armor - a moisture-proof hose made of material over it homogeneous with a material of a moisture protective cover.

To prevent the spread of moisture under the armor in case of violation of the integrity of the moisture protection hose, it is advisable to lay a water blocking layer under the armor.

In the second embodiment, the insulation is made of alternating layers of continuous and porous polyethylene combined and an individual screen is applied to each pair. The use of such insulation is advisable when laying the cable in areas located in an open area where fire safety requirements are not imposed (for example, sensors and actuators along pipelines). Moreover, the presence of an individual shield allows you to organize grounding circuits on the screen of each pair, widely used in automation when using the explosion protection type "intrinsically safe electrical circuit i" according to GOST 51330.13-99.

A cable with such insulation has a minimum attenuation coefficient and allows laying it in areas of greater length. The cross section of the conductive conductors is selected from the range of 0.35 or 0.5, or 0.75 mm ² . Moreover, the cross-section of 0.35 mm ² corresponds to the range of permissible insulation thicknesses from 0.3 to 1.5 mm, the cross-section of 0.5 mm ² - the thickness range from 0.35 to 1.7 mm, the cross-section of 0.75 mm ² - the range thicknesses from 0.35 to 1.9 mm. The use of conductive conductors with a cross section of more than 0.75 mm ^{2 is} not economically feasible, since the insulation thickness increases so much that the use of such cables becomes economically unacceptable.

As in the first embodiment, it is advisable to use water-blocking threads in all air cavities of the core, cushion insulation for the pair and core, in order to protect from external and internal electromagnetic influences, depending on their frequency range, to make screens from metal-polymer tape, in the form of a braid from copper or tinned copper wires or combined from a braid and a metal-polymer tape laid under it, it is advisable to make moisture-proof sheaths from light-stabilized polyethylene or polyurethane, with armor in the form of a braid made of round steel galvanized steel or stainless steel wires, or longitudinally applied metal-polymer corrugated tape with overlapping, and to protect the armor - apply a moisture protection hose made of a material that is uniform with the material of the moisture protection shell, and water-blocking under the moisture protection shell and armor - layers.

To isolate individual screens between each other, it is advisable to impose an extruded polymer shell or belt insulation with a polymer tape winding with overlapping on top of each of them. Moreover, it is advisable to choose the thickness of the shell and belt insulation according to the individual screen so that it can withstand a test voltage of at least 500 V AC at a frequency of 50 Hz applied between any individual and between any individual and common screens in order to meet the requirements for intrinsically safe circuits in accordance with GOST 51330.13-99.

In the third version, the insulation is made of cross-linked polyethylene, approved for use in hazardous areas by the technical circular of the Association "Roselectromontazh" No. 14/2006 of 10/16/2006 "On the use of cables of cross-linked polyethylene in cable structures, including in hazardous areas" approved by the Federal Service for Ecological, Technological and Nuclear Supervision (Rostekhnadzor) and there are no individual screens. It is advisable to use cables with cross-linked polyethylene insulation in hazardous areas that are geographically located in production facilities or in open areas directly in the areas of oil and gas production. The cross-section of conductive conductors is selected from the range 0.35 or 0.5, or 0.75, or 1.0, or 1.2, or 1.5 mm ² . Moreover, the cross-section of 0.35 mm ² corresponds to the range of permissible thicknesses from 0.3 to 1.3 mm, the cross-section of 0.5 mm ² - the thickness range from 0.3 to 1.4 mm, the cross-section of 0.75 mm ² - the range thicknesses from 0.3 to 1.6 mm, cross section 1.0 mm ² - a range of thicknesses from 0.35 to 1.7 mm, cross section 1.2 mm ² - a range of thicknesses from 0.35 to 1.9 mm, cross section 1.5 mm ² - a range of thicknesses from 0.4 to 2.1 mm.

As in the first embodiment, it is advisable to use water-blocking threads in all air cavities of the core, cushion insulation along the pair and core, in order to protect from external electromagnetic influences, depending on the frequency range, to produce a screen from a metal-polymer tape, in the form of a braid from tinned copper or copper wires or combined from a braid and a metal-polymer tape laid under it, with armor in the form of a braid from round galvanized steel or stainless steel wires or longitudinally m tallopolimernoy corrugated tape with overlap and armor for protection - to impose moisture protection hose of a material homogeneous with the waterproof coating material, and a moisture proof armor shell and - water blocking layers.

In connection with the conditions for laying cables in the interior of hazardous areas or in open areas, directly in the areas of oil and gas production, in order to ensure increased fire safety requirements for non-distribution of combustion when laying in a bundle, reduced smoke and gas activity during combustion and smoldering polymers included in the cable design, it is advisable to make a moisture-proof sheath and hose from a light-stabilized halogen-free polymer composition with ki lorodnym index of not less than 35 or a specific technical polyurethane having an oxygen index of not less than 29.

In the fourth embodiment, the insulation is made of cross-linked polyethylene, which is approved for use in hazardous areas by a circular of the Association “Roselectromontazh” and an individual screen is superimposed on each pair of conductive wires twisted together.

It is advisable to use cables with cross-linked polyethylene insulation in hazardous areas geographically located in production facilities or in open areas directly in the areas of oil and gas production, and the presence of individual screens provides the possibility of organizing grounding circuits on the screen of each pair. The cross-section of the conductive forces selected from the range of 0.35 or 0.5 mm ² .

Moreover, the cross section of 0.35 mm ² corresponds to the range of values of thickness of from 0.4 to 1.7 mm, the cross section of 0.5 mm ² - thickness range of 0.4 to 2.1 mm. The use of conductive conductors with a cross section of more than 0.5 mm ^{2 is} not economically feasible, since the insulation thickness increases so much that the use of such cables is not economically acceptable.

As in the first embodiment, it is advisable to use water-blocking threads in all air cavities of the core, cushion insulation for the pair and core, in order to protect from external and internal electromagnetic influences, depending on their frequency range, to make screens from metal-polymer tape, in the form of a braid from copper or tinned copper wires or combined from a braid and a metal-polymer tape laid under it, with armor in the form of a braid from round galvanized steel or stainless steel wires or food flax-coated metal-polymer corrugated tape with overlapping, and to protect the armor - apply a moisture-proof hose made of a material that is uniform with the material of the moisture-proof sheath, and water-blocking layers under the moisture-proof sheath and armor.

In connection with the conditions for laying cables in the interior of hazardous areas or in open areas, directly in the areas of oil and gas production, in order to ensure increased fire safety requirements for non-distribution of combustion when laying in a bundle, reduced smoke and gas activity during combustion and smoldering polymers included in the cable design, it is advisable to make a moisture-proof sheath and hose from a light-stabilized halogen-free polymer composition with ki lorodnym index of not less than 35 or a specific technical polyurethane having an oxygen index of not less than 29.

To isolate individual screens between each other, it is advisable to impose an extruded polymer shell or belt insulation with a polymer tape winding with overlapping on top of each of them. Moreover, it is advisable to choose the thickness of the shell or zone insulation according to the individual screen so that it withstands the test voltage of at least 500 V AC at a frequency of 50 Hz applied between any individual and between any individual and common screens in order to ensure the requirements for intrinsically safe circuits in accordance with GOST 51330.13-99.

The proposed utility model is illustrated by a specific embodiment represented by the drawing (Fig. 1) of the cross-section of a mounting cable predominantly explosion-proof for high-speed automation systems of industrial plants with two individually shielded pairs and a common screen.

The cable consists of two pairs of stranded copper tinned conductive conductors 1 insulated with cross-linked polyethylene 2. The cross-section of conductive conductors is selected from a range of 0.35 or 0.5 mm ² . Moreover, the cross section of 0.35 mm ² corresponds to the range of acceptable values of the insulation thickness of 0.4 to 1.7 mm, the cross section of 0.5 mm ² - thickness range of 0.4 to 2.1 mm. Insulated cores are twisted together in pairs. Over each pair of polymer tape wrapped with overlapping overlapping belt insulation 4.

In the air spaces under the waist insulation of the pairs 4 and between the pairs water blocking threads 3 are laid.

On top of the belt insulation of pairs 4, an aluminum-polyethylene terephthalate individual screen 5 is laid by a winding with metal overlap inside, and a drainage core (not shown) is inserted underneath it.

A belt insulation of polyethylene terephthalate tape 6 is applied over the individual screens 5 by winding in a spiral with overlapping. The thickness of the tape is selected so that it can withstand a voltage of at least 500 V AC at a frequency of 50 Hz applied between any individual and between any individual and common screens.

Shielded pairs with belt insulation along the screens are twisted together in a core (together with water-blocking threads).

A belt insulation 7 of polyethylene terephthalate tape is applied over the core by a winding with overlapping.

On the belt insulation 7 by a winding with metal overlapping, a common screen 8 of aluminum-polyethylene terephthalate tape is superimposed inside, and a drainage core (not shown) is passed under the screen.

A moisture-proof sheath 9 of a light-stabilized halogen-free polymer composition with an oxygen index of at least 35 was applied over the common screen 8 by extrusion.

Cable manufacturing technology, according to the claimed utility model, includes the following operations.

Copper wires for conductive and drainage cores 1 and shields 5 and 8 in the form of braids are made of copper wire "wire rod", usually with a diameter of 8 mm by drawing. For the manufacture of cores of the main cable sizes according to this utility model, three drawing operations are used successively: coarse, medium and thin.

To ensure softness, the wire is annealed in special furnaces or for passage in special devices combined with one of the drawing operations.

For the manufacture of tinned veins, copper wires are coated with a thin layer of tin in the tinning plants in a hot way, while the wire is not preliminarily annealed.

Conductors 1 are twisted from the required number of wires on twisting machines of cigar, frame or lantern types.

Polyethylene insulation 2 is applied on extrusion lines. At the same time, for applying combined insulation from continuous and porous layers, it is imposed on a line equipped with the number of extruders equal to the number of layers. In order to obtain porous layers, physical foaming units are injected into the line that inject nitrogen or carbon dioxide.

The production of cross-linked polyethylene can be carried out in one of two ways: radiation or chemical. In the radiation method, an isolated core is rewound from one drum to another in an electron stream obtained with a special accelerator.

Chemical crosslinking is also carried out by one of two methods: peroxide or silanol. For peroxide crosslinking, the extrusion line must be equipped with a special vulcanization chamber and crosslinking is performed in a passage, and silanol crosslinking is carried out in a separate chamber in which a drum with an isolated core is placed.

Twisting of insulated cores in pairs is usually carried out on twisting machines of a frame type.

Screens 5 and 8 in the form of a braid are superimposed on braiding machines. Braid wires are selected mainly in the range from 0.1 to 0.2 mm. To ensure the necessary density of the braid, the wires are grouped into a pile of several wires for the process of crushing, carried out on reeling machines.

Screens 5 and 8 in the form of a winding are superimposed mainly on aluminum-polyethylene terephthalate tapes on tape-wrapping machines.

In the manufacture of combined shields 5 and 8, alumina-polyethylene terephthalate tapes are predominantly allowed longitudinally to braid operations with the aluminum layer up.

The twisting of the pairs into the core is carried out mainly on lantern type machines together with water blocking threads.

Belt insulation 4, 6, 7 of polymer tapes is imposed mainly by a spiral winding on tape-wrapping machines.

A moisture-proof sheath 9 and a moisture-proof hose made of polyethylene and technical polyurethane, as well as from a halogen-free polymer composition, are applied on the extrusion lines.

Armor in the form of a braid of predominantly round galvanized steel, or stainless steel wires is laid on braiding machines on cables, as a rule, with an external diameter under the armor not exceeding 30 mm. Wires are typically used with a diameter of 0.25 mm or 0.30 mm. If it is necessary to achieve a predetermined density, the braids of the wire are grouped into a pile of several wires for the process of crushing, carried out on reeling machines.

When booking cables with an outer diameter under the armor exceeding 30 mm, the armor is imposed on the midwife armoring machines. The wires are used with a diameter of 0.6 mm or more.

Corrugated tape armor is superimposed on the passage for the operation of applying a moisture-proof hose. The corrugating and coiling device is installed in front of the extrusion line. The tape is fed longitudinally, corrugated, rolled up around the workpiece in a moisture-proof shell and the workpiece with armor enters the head of the extruder, where a moisture-proof hose is applied.

Water-blocking tapes under the moisture-proof shell and armor are applied by winding on tape-wrapping machines or longitudinally to the operations of applying a moisture-proof shell and armor.

To confirm the achievement of the technical result, eight groups of two-pair cables were made, three samples in each section 0.35 mm ² and 1.5 mm ² for cables without individual shields and 0.35 mm and 0.5 mm for cables with individual shields 100 m

The samples of the first group had four conductive conductors with a cross section of 0.35 mm ² , twisted from seven tinned copper wires, insulated with combined insulation from two layers - of porous and solid polyethylene with a nominal insulation thickness of 0.6 mm, twisted together in pairs, the pairs twisted into the core, the common screen of the aluminum-polyethylene terephthalate tape, the metal inside with overlapping, the drain core under the screen, and a moisture-proof sheath made of light-stabilized polyethylene.

The samples of the second group had four conductive conductors with a cross section of 1.5 mm ² , twisted from seven tinned copper wires, insulated with combined insulation from two layers - of porous and solid polyethylene with a nominal insulation thickness of 1.25 mm, twisted together in pairs, the pairs twisted into the core, a common screen of aluminum-polyethylene terephthalate tape, metal inside with overlapping, a drain core under the screen, and a moisture-proof sheath made of light-stabilized polyethylene.

The samples of the third group had four conductive conductors with a cross section of 0.35 mm ² , twisted from seven tinned copper wires, insulated with combined insulation from two layers - from porous and solid polyethylene with a nominal insulation thickness of 1.10 mm, twisted together in pairs, each a pair of individual screens of aluminum-polyethylene terephthalate tape, metal inside with overlapping, drain wire under the screen, waist insulation over each individual screen of two polyethylene terephthalate tapes superimposed by a winding with overlapping, shielded pairs are twisted into a core, a common screen of aluminum-polyethylene terephthalate tape, metal inside with overlapping, a drain core under the screen, and a moisture-proof sheath made of light-stabilized polyethylene.

The samples of the fourth group had four conductive conductors with a cross section of 0.5 mm ² , twisted from seven tinned copper wires, insulated with combined insulation of two layers - from porous and solid polyethylene with a nominal insulation thickness of 1.35 mm, twisted together in pairs, each a pair of individual screens of alumina-polyethylene terephthalate tape, metal inside with overlapping, drainage core under the screen, waist insulation over each individual screen of two polyethylene terephthalate tapes of superimposed windings d overlapping, shielded twisted pairs in the core of the overall screen alyumopolietilentereftalatnoy tape, metal inwardly overlapping the drain wire below the screen, and moisture proof envelope of light-stabilized polyethylene.

Samples of the fifth group had four conductive conductors with a cross section of 0.35 mm ² , twisted from seven tinned copper wires, insulated with cross-linked polyethylene 0.7 mm thick, twisted together in pairs, pairs twisted into a core, a common screen made of aluminum-polyethylene terephthalate tape, with metal inside overlapping, drainage core under the screen, and a moisture-proof sheath made of a halogen-free polymer composition with an oxygen index of at least 35.

Samples of the sixth group had four conductive conductors with a cross section of 1.5 mm ² , twisted from seven tinned copper wires, insulated with cross-linked polyethylene 1.6 mm thick, twisted together in pairs, pairs twisted into a core, a common screen made of aluminum-polyethylene terephthalate tape, with metal inside overlapping, drainage core under the screen, and a moisture-proof sheath made of a halogen-free polymer composition with an oxygen index of at least 35.

Samples of the seventh group had four conductive conductors with a cross section of 0.35 mm ² , twisted from seven tinned copper wires, insulated with cross-linked polyethylene 1.35 mm thick, twisted together in pairs, an individual screen of aluminum-polyethylene terephthalate tape was placed on each pair, with the metal inside with overlapping , drainage core under the screen, belt insulation on top of each individual screen of two polyethylene terephthalate tapes superimposed by a winding with overlapping, shielded pairs are twisted into the core, the common screen is made of alumopol ethylene terephthalate tape, metal inside with overlapping, drainage core under the screen, and moisture-proof sheath made of a halogen-free polymer composition with an oxygen index of at least 35.

Samples of the eighth group had four conductive conductors with a cross section of 0.5 mm ² , twisted from seven tinned copper wires, insulated with cross-linked polyethylene 1.7 mm thick, twisted together in pairs, an individual screen of aluminum-polyethylene terephthalate tape was placed on each pair, with the metal inside with overlapping , drainage core under the screen, belt insulation on top of each individual screen of two polyethylene terephthalate tapes superimposed by a winding with overlapping, shielded pairs are twisted into the core, the common screen is made of aluminum Tilenterephthalate tape, metal inside with overlapping, drain core under the screen, and moisture-proof sheath made of a halogen-free polymer composition with an oxygen index of at least 35.

The listed samples were measured wave resistance at frequencies of 3 and 20 MHz.

The measurement results are summarized in table 1.

The diagram of Fig. 2 shows: the power supply 1 and the information signal transmitter 2 are connected to the cable 5 through the splitter 3. At the far end of the cable 5, a second splitter 4 is installed, from which the information signals are fed to the receiver 6, and the power component to the load (actuator ) 7. At the input to splitter 4, the temperature of the conductive conductors was measured, and at the load, the released power was measured. The measurement results are summarized in table 2.

As can be seen from the results presented in table 1, the wave impedance of all samples in the frequency range from 3 to 20 MHz is within acceptable values from 135 to 165 Ohms.

And as follows from table 2, the temperature on all conductors did not exceed 70 ° C when transmitting significantly different power for conductive conductors with sections of 0.35 mm ² and 1.5 mm ² in cables without individual shields of pairs and 0.35 mm ² and 0, 5 mm ² in cables with individual pair shields for samples with combined insulation from alternating layers of continuous and porous polyethylene, and 90 ° C when transmitting significantly different power with conductive conductors with cross sections of 0.35 mm ² and 1.5 mm ² in cables without individual screens of pairs and 0.35 mm ² and 0.5 mm ² in cables with indie visual steam screens for samples with cross-linked polyethylene insulation.

The tests carried out confirm the achievement of the technical result.

Table 1 Sample Number Impedance, Ohm, cables with type of insulation and cross-section of conductive conductors at a frequency, MHz Combined: continuous and porous polyethylene Crosslinked Polyethylene Without individual screen With individual screen Without individual screen With individual screen 0.35 mm ² 1.5 mm ² 0.35 mm ² 0.5 mm ² 0.35 mm ² 1.5 mm ² 0.35 mm ² 0.5 mm ² 3 twenty 3 twenty 3 twenty 3 twenty 3 twenty 3 twenty 3 twenty 3 twenty one 146.71 148.29 143.11 144.91 141.17 142.64 142.77 144.19 151.17 152.78 154.77 156.21 140.34 141.99 142.25 142.81 2 143.80 144.95 142.52 144.03 140.25 141.81 143.95 145.43 150.25 151.91 153.95 155.38 140.88 142.27 141.76 143.84 3 144.12 145.76 143.27 144.87 142.03 143.57 143.48 145.08 152.03 153.52 153.48 155.11 139.96 141.45 141.84 143.39 table 2 Sample Number Maximum temperature and transmitted power via cables with type of insulation and cross-section of conductive conductors Combined: continuous and porous polyethylene Crosslinked Polyethylene Without individual screen With individual screen Without individual screen With individual screen 0.35 mm ² 1.5 mm ² 0.35 mm ² 0.5 mm ² 0.35 mm ² 1.5 mm ² 0.35 mm ² 0.5 mm ² t, ° C R, W t, ° C R, W t, ° C R, W t, ° C R, W t, ° C R, W t, ° C R, W t, ° C R, W t, ° C R, W one 66 360 69 846 68 392 66 452 88 612 85 1053 88 610 84 672 2 67 378 70 852 65 343 64 423 83 545 87 1208 88 615 85 678 3 65 341 65 785 68 390 67 463 83 551 85 1051 87 598 87 720

Claims (54)

1. The mounting cable is predominantly explosion-proof for high-speed automation systems, consisting of a core, including an even number of polymer-insulated single-wire or multi-wire copper or copper tinned conductive wires, twisted together in pairs, a common screen overlaid on the core, and an extruded polymer moisture-proof sheath, characterized in that the insulation of the conductive conductors is made of alternating layers of continuous and porous polyethylene combined, and the cross section of the conductive A driving lived selected from a number of 0.35 or 0.5 or 0.75 or 1.0 or 1.2 or 1.5 mm ^2, the cross section of 0.35 mm ² corresponds to the range of acceptable values of the thicknesses of insulation 0.25 to 1.2 mm, section 0.5 mm ² - a range of thicknesses from 0.25 to 1.3 mm, section 0.75 mm ² - a range of thicknesses from 0.25 to 1.5 mm, section 1, 0 mm ² - a thickness range from 0.3 to 1.6 mm, a cross section of 1.2 mm ² - a thickness range from 0.3 to 1.8 mm, a cross section of 1.5 mm ² - a thickness range from 0.35 to 2 , 0 mm. 2. The cable according to claim 1, characterized in that water blocking threads are additionally introduced into the air spaces of the core. 3. The cable according to claim 1, characterized in that on each pair and on the core an additional belt insulation is applied in the form of a winding with a polymer tape with overlapping. 4. The cable according to claim 3, characterized in that water blocking threads are additionally introduced into the air spaces under the waist insulation of each pair. 5. The cable according to claim 1, characterized in that the common screen is made of a metal-polymer tape applied longitudinally or in the form of a winding with metal overlap inward with a drainage core made of copper or tinned copper wires laid under the screen. 6. The cable according to claim 1, characterized in that the common screen is made in the form of a braid from tinned copper or copper tinned wires. 7. The cable according to claim 6, characterized in that under the braid an additional layer of metal-polymer tape is applied longitudinally or by winding with the metal overlapping upward. 8. The cable according to claim 1, characterized in that when the number of pairs is more than one, the pairs in the core are additionally twisted together, and the strand twisting steps in adjacent pairs are mutually unequal and mutually multiple. 9. The cable according to claim 8, characterized in that the pairs are twisted in increments of not more than 100 mm. 10. Cable according to any one of claims 1 or 8, characterized in that the said moisture-proof sheath is made of light-stabilized compositions of polyethylene or technical polyurethane. 11. The cable according to claim 10, characterized in that a water blocking layer is additionally laid under the moisture-proof sheath. 12. A cable according to any one of claims 1 or 8, characterized in that the armor in the form of a braid or winding from round steel galvanized or stainless wires or longitudinally from a metal-polymer corrugated tape with overlapping and a moisture-proof hose made of a material uniform with moisture proof material. 13. The cable according to claim 12, characterized in that a water blocking layer is additionally laid under the armor. 14. The installation cable is predominantly explosion-proof for high-speed automation systems, consisting of a core, including an even number of polymer-insulated single-wire or multi-wire copper or copper tinned conductive conductors, twisted together in pairs, a common screen overlaid on the core, and an extruded polymer moisture-proof sheath, characterized in that the insulation of the conductive conductors is made of alternating layers of continuous and porous polyethylene, twisted into pairs s with each other when the number of pairs lived more than one superimposed individual screens, and the cross section of conductors is selected from a number of 0.35 or 0.5 or 0.75 mm ^2, the cross section of 0.35 mm ² corresponds to the range of acceptable values of the thicknesses of insulation 0.35 to 1.5 mm, a cross section of 0.5 mm ² is a thickness range from 0.35 to 1.7 mm, a cross section of 0.75 mm ² is a thickness range from 0.35 to 1.9 mm. 15. The cable according to claim 14, characterized in that water-blocking threads are additionally introduced into the air spaces of the core. 16. The cable according to 14, characterized in that on each pair and on the core an additional belt insulation is applied in the form of a winding with a polymer tape with overlapping. 17. The cable according to claim 16, characterized in that water blocking threads are additionally introduced into the air spaces under the waist insulation of each pair. 18. The cable according to claim 14, characterized in that an extruded polymer sheath or belt insulation is applied over each individual screen by a tape wrapped with polymer tape and the thickness of the sheath or zone insulation on the individual screen is selected so that it can withstand a voltage test of at least 500 V AC frequency of 50 Hz, applied between any individual or between any individual and common screens. 19. The cable according to 14, characterized in that the common and individual screens are made of metal-polymer tape, applied longitudinally or in the form of a winding with overlapping metal inside with a drainage core made of copper or tinned copper wire laid under the screen. 20. The cable according to 14, characterized in that the common and individual screens are made in the form of a braid from tinned copper or copper tinned wires. 21. The cable according to claim 20, characterized in that under the braid an additional layer of metal-polymer tape is applied longitudinally or by winding with the metal overlapping upward. 22. The cable according to 14, characterized in that when the number of pairs is more than one, the pairs in the core are additionally twisted together, and the steps of twisting the cores in adjacent pairs are made mutually unequal and mutually multiple. 23. The cable according to claim 22, characterized in that the pairs are twisted in increments of not more than 100 mm. 24. Cable according to any one of paragraphs.14 or 22, characterized in that the said moisture-proof sheath is made of light-stabilized compositions of polyethylene or technical polyurethane. 25. The cable according to paragraph 24, wherein a water-blocking layer is additionally laid under the moisture-proof sheath. 26. Cable according to any one of paragraphs.14 or 22, characterized in that the armor in the form of a braid or winding from round steel galvanized or stainless wires or longitudinally from a metal-polymer corrugated tape with overlapping and a moisture-proof hose made of a material similar to moisture proof material. 27. The cable according to claim 26, characterized in that a water blocking layer is additionally laid under the armor. 28. The mounting cable is predominantly explosion-proof for high-speed automation systems, consisting of a core, including an even number of polymer-insulated single-wire or multi-wire copper or copper tinned conductive wires, twisted together in pairs, a common screen overlaid on the core, and an extruded polymer moisture-proof sheath, characterized in that the insulation of the conductive conductors is made of cross-linked polyethylene, and the cross-section of the conductive conductors is selected from the range of 0.35, or 0.5, or 0.75, or 1.0, and whether 1.2, or 1.5 mm ² , with a cross section of 0.35 mm ² corresponding to a range of permissible insulation thicknesses from 0.3 to 1.3 mm, a cross section of 0.5 mm ² - a range of thicknesses from 0.3 to 1 , 4 mm, cross section 0.75 mm ² - a range of thicknesses from 0.3 to 1.6 mm, cross section 1.0 mm ² - a range of thicknesses from 0.35 to 1.7 mm, cross section 1.2 mm ² - range thickness from 0.35 to 1.9 mm, section 1.5 mm ² - a range of thicknesses from 0.4 to 2.1 mm. 29. The cable according to claim 28, characterized in that water-blocking threads are additionally introduced into the air spaces of the core. 30. The cable according to claim 28, characterized in that on each pair and on the core an additional belt insulation is applied in the form of a winding with a polymer tape with overlapping. 31. The cable according to claim 30, characterized in that water blocking threads are additionally introduced into the air spaces under the waist insulation of each pair. 32. The cable according to claim 28, wherein the common screen is made of a metal-polymer tape applied longitudinally or in the form of a winding with metal overlap inward with a drainage core made of copper or tinned copper wires laid under the screen. 33. The cable according to p. 28, characterized in that the common screen is made in the form of a braid from tinned copper or copper tinned wires. 34. The cable according to p. 33, characterized in that under the braid an additional layer is applied of a metal-polymer tape longitudinally or by winding with the metal overlapping upward. 35. The cable according to claim 28, characterized in that when the number of pairs is more than one, the pairs in the core are additionally twisted together, and the steps of twisting the cores in adjacent pairs are mutually unequal and mutually multiple. 36. The cable according to claim 35, wherein the pairs are twisted in increments of not more than 100 mm. 37. Cable according to any one of paragraphs 28 or 35, characterized in that the said moisture-proof sheath is made of light-stabilized halogen-free polymer composition with an oxygen index of at least 35 or a special technical polyurethane with an oxygen index of at least 29. 38. The cable according to clause 37, wherein a water-blocking layer is additionally laid under the said moisture-proof sheath. 39. Cable according to any one of paragraphs 28 or 35, characterized in that the armor in the form of a braid or a winding of round galvanized steel or stainless steel wires or longitudinally from a metal-polymer corrugated tape with overlapping and a moisture-proof hose made of a material similar to moisture proof material. 40. The cable according to claim 39, characterized in that a water blocking layer is additionally laid under the armor. 41. The assembly cable is predominantly explosion-proof for high-speed automation systems consisting of a core, including an even number of polymer-insulated single-wire or multi-wire copper or copper tinned conductive wires, twisted together in pairs, a common screen laid on top of the core, and an extruded polymer moisture-proof sheath, characterized in that the insulation of conductive conductors is made of cross-linked polyethylene, superimposed on pairs of twisted wires with more than one pair ndividualnye screens and conductor cross section is selected from a number of 0.35 or 0.5 mm ^2, the cross section of 0.35 mm ² corresponds to the range of acceptable values of the insulation thickness of 0.4 to 1.7 mm, the cross section of 0.5 mm ² - thickness range from 0.4 to 2.1 mm. 42. The cable according to paragraph 41, wherein the water-blocking threads are additionally introduced into the air spaces of the core. 43. The cable according to paragraph 41, characterized in that on each pair and on the core an additional belt insulation is applied in the form of a winding with a polymer tape with overlapping. 44. The cable according to item 43, wherein the water-blocking threads are additionally introduced into the air spaces under the waist insulation of each pair. 45. The cable according to claim 41, characterized in that an extruded polymer sheath or belt insulation is applied over each individual screen with a polymer tape winding with overlapping, and the thickness of the sheath or zone insulation over the individual screen is selected so that it can withstand a test of at least 500 V AC frequency of 50 Hz, applied between any individual or between any individual and common screens. 46. The cable according to paragraph 41, wherein the common and individual screens are made of metal-polymer tape applied longitudinally or in the form of a winding with metal overlap inward with a drainage conductor laid under the screen made of copper or tinned copper wires. 47. The cable according to paragraph 41, wherein the common and individual screens are made in the form of a braid of tinned copper or copper wires. 48. The cable according to clause 47, characterized in that under the braid an additional layer of metal-polymer tape is applied longitudinally or by winding with the metal overlapping upward. 49. The cable according to paragraph 41, wherein in the number of pairs more than one, the pairs in the core are additionally twisted together, and the steps of twisting the cores in adjacent pairs are made mutually unequal and mutually multiple. 50. The cable according to § 49, wherein the pairs are twisted in increments of not more than 100 mm. 51. Cable according to any one of paragraphs 41 or 49, characterized in that the said moisture-proof sheath is made of light-stabilized halogen-free polymer composition with an oxygen index of at least 35 or a special technical polyurethane with an oxygen index of at least 29. 52. The cable according to paragraph 51, wherein a water-blocking layer is additionally laid under the said moisture-proof sheath. 53. Cable according to any one of paragraphs 41 or 49, characterized in that the armor in the form of a braid of round galvanized steel or galvanized steel wires or longitudinally from a metal-polymer corrugated tape with overlapping and a moisture protection hose made of a material similar to the moisture-proof material is applied over the said moisture-proof sheath. shell. 54. The cable according to item 53, wherein the water-blocking layer is additionally laid under the armor.