CN103236317B - There is the compound data cable of low-loss of interference free performance - Google Patents

There is the compound data cable of low-loss of interference free performance Download PDF

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Publication number
CN103236317B
CN103236317B CN201310113817.5A CN201310113817A CN103236317B CN 103236317 B CN103236317 B CN 103236317B CN 201310113817 A CN201310113817 A CN 201310113817A CN 103236317 B CN103236317 B CN 103236317B
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China
Prior art keywords
sheath
sub
twisted wire
wire
pitch
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CN201310113817.5A
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CN103236317A (en
Inventor
吕秀云
王惠兵
金春敏
吴士杰
孙国跃
刘党荣
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Jiangsu Hengtong Wire and Cable Technology Co Ltd
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Jiangsu Hengtong Wire and Cable Technology Co Ltd
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Priority to CN201510979853.9A priority Critical patent/CN105469898A/en
Priority to CN201510991568.9A priority patent/CN105469883B/en
Priority to CN201310113817.5A priority patent/CN103236317B/en
Publication of CN103236317A publication Critical patent/CN103236317A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/007—Communication cables or conductors for overhead application
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/04—Cables with twisted pairs or quads with pairs or quads mutually positioned to reduce cross-talk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
    • H01B11/08—Screens specially adapted for reducing cross-talk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/02—Cables with twisted pairs or quads
    • H01B11/12—Arrangements for exhibiting specific transmission characteristics
    • H01B11/125—Specially adapted cable interconnections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/003—Power cables including electrical control or communication wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/008—Power cables for overhead application
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Insulated Conductors (AREA)
  • Communication Cables (AREA)

Abstract

The present invention discloses a kind of compound data cable of low-loss with interference free performance, comprising: steel conductor, coaxial conductor, eight copper conductors and oversheath body; Eight copper conductors, four pairs of twisted wires pair as information communication of stranded formation between two; Oversheath body comprises the first sub-sheath, the second sub-sheath and the 3rd sub-sheath, this first sub-sheath, the second sub-sheath and the 3rd sub-sheath center have one " people " font connecting portion, the first sub-sheath is coated on described steel conductor outer surface, the second sub-sheath is coated on described the first inner restrictive coating outer surface, and the 3rd sub-sheath is coated on described the second inner restrictive coating outer surface; Described steel conductor, the first wire sheathing and proof copper-wire braided screen layer are by being positioned at some parallel plain conductor electrical connections alternately of oversheath body and " people " font connecting portion. The present invention further reduces cross-talk and the signal of telecommunication delay inequality of the communications cable, and has avoided the power attenuation of signal, has improved the stability of signal power and performance.

Description

There is the compound data cable of low-loss of interference free performance
Technical field
The present invention relates to a kind of communication cable, relate in particular to a kind of low-loss with interference free performance compoundData cable.
Background technology
The structure of common single type communication cable: its primary structure of the cable of pair twist structure is that copper conductor squeezes outwardThe insulation of bag one deck, stranding after single line pair twist, outside adopts the structure of polyolefin oversheath, and coaxial cable is mainStructure is that inner wire extrudes outward or the insulation of wrapped one deck, then adopts aluminium foil or braiding as polyene after outer conductorHydrocarbon is as the structure of oversheath, due to the said structure limitation of communication cable, exterior finish distributing system,In automated detection system, cause that stretching is large, quality is unstable, it is loaded down with trivial details to connect up, unreliable and impact makesUse performance.
Summary of the invention
The invention provides a kind of compound data cable of low-loss with interference free performance, this low-loss is compoundThe type communications cable further reduces cross-talk and the signal of telecommunication delay inequality of the communications cable, and has avoided the power of signalLoss, has improved the stability of signal power and performance.
For achieving the above object, the technical solution used in the present invention is: a kind of low damage with interference free performanceConsume compound data cable, comprising: steel conductor, coaxial conductor, eight are coated with the copper conductor of polyethylene layerWith oversheath body; Described coaxial conductor outer surface is coated with plastic insulating layer, this plastic insulating layer appearance breadBe covered with the first wire sheathing, the first inner restrictive coating is coated on described the first wire sheathing outer surface;
Described eight copper conductors are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wiresCentering the first twisted wire to, the second twisted wire to, the 3rd twisted wire to the 4th twisted wire to being arranged in order counterclockwise and twistingClose and form conduction cable core, the first twisted wire to the 3rd twisted wire pair and the second twisted wire to the 4th twisted wire to alternate rowRow, described four twisted pair wires are all coated with foil shielding layer to outer surface separately, and a polyester belt is wrapped in described aluminiumPaper tinsel screen layer outer surface, the second inner restrictive coating is coated on described polyester belt outer surface;
Described oversheath body comprises the first sub-sheath, the second sub-sheath and the 3rd sub-sheath, this first sub-sheath,The second sub-sheath and the 3rd sub-sheath center have one " people " font connecting portion, and this " people " font connectsThe first muscle portion of company, second of portion connects muscle portion and the 3rd muscle portion of company is connected respectively to described the first sub-sheath, secondSub-sheath and the 3rd sub-sheath, the first sub-sheath is coated on described steel conductor outer surface, and the second sub-sheath is coatedIn described the first inner restrictive coating outer surface, the 3rd sub-sheath is coated on described the second inner restrictive coating outer surface;
Described steel conductor, the first wire sheathing and proof copper-wire braided screen layer are by being positioned at oversheath body and " people "Some parallel plain conductor electrical connections alternately in font connecting portion;
The right pitch of described the first twisted wire is 15～15.5mm, and the right pitch of described the second twisted wire is13.5～13.9mm, the right pitch of described the 3rd twisted wire is 14.2～14.6mm, the right pitch of described the 4th twisted wireBe 12.7～13.1mm;
Adjacent segments apart from design formula is: 0.002 < | 1 h 1 - 1 h 2 | &le; 0.013 ,
The pitch design of being separated by formula is: 0.002 < | 1 h 1 - 1 h 3 | &le; 0.011 ;
H1 is the right pitch of the first twisted wire, h2 be the second twisted wire to or the right pitch of the 4th twisted wire, h3 isThe pitch that three twisted wires are right.
In technique scheme, further improve technical scheme as follows:
1, in such scheme, the right pitch of described the first twisted wire is 15.2mm, the right joint of described the second twisted wireApart from being 13.7mm, the right pitch of described the 3rd twisted wire is 14.4mm, and the right pitch of described the 4th twisted wire is12.9mm。
2, in such scheme, described adjacent 2 plain conductors be spaced apart 2.4～3.7 of conduction cable core twisting pitchDoubly.
3, in such scheme, described four twisted pair wire strands form conduction cable core, this conduction cable core twisting pitchBe that the 4th twisted wire is to 7.7～9.8 of pitch times.
4,, in such scheme, described the first muscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120°。
5, in such scheme, all annealed PROCESS FOR TREATMENT of described steel conductor and copper conductor.
6,, in such scheme, described foil shielding layer has laminated polyester film and is positioned at the aluminium foil layer group of its medial surfaceBecome, described polyester film layer thickness is 0.020 ± 0.002mm, and described aluminium foil layer thickness is 0.014 ± 0.002mm。
Because technique scheme is used, the present invention compared with prior art has following advantages:
1, the present invention has the compound data cable of low-loss of interference free performance, has both effectively solved cableCircumstance complication in work progress, for example, in the distribution system in power supply-distribution system and the building of machine roomThe wiring of cable brings many inconvenience, can produce around certain electromagnetic field when cable operation, thereby dryDisturb other system, when serious, can cause the other problems such as equipment operation failure; Avoid pulling cable, hadPreferably tensile strength and percentage elongation, had both guaranteed to meet the self-supporting ability of cable, had also solved cable and had existed simultaneouslyThe problem of phase mutual interference in running, has guaranteed the long-term stability of transmission characteristic to have again emergency maintenance sideJust, can Reusability etc. advantage, there is obvious economic benefit and promotional value,, can stand environment temperature and becomeThe test of material rising-heat contracting-cold when change, therefore can extend service life of cable, is difficult for being corroded, and usesLife-span is long.
2, the present invention has the compound data cable of low-loss of interference free performance, has broken through traditional strand to lineThe circular configuration of rear stranding, effectively improve communication cable cross-talk (NEXT, FEXT) index 1% more thanMeasure, even also improved the 1dB surplus of loss (INSERTIONLOSS), increase characteristic impedance(IMPEDANCE) 1.5% stability in guaranteeing the stable transmission performance of cable, increases simultaneouslyAdd the performance of the transmission electricity of copper cable.
3, the present invention has the compound data cable of low-loss of interference free performance, adopts specific strand to save lineBecome core pitch and strand to combine line apart from collocation and the cable core that specifically conducts electricity, reduced transmission of electric signals in its timeOn road, produce electromagnetic induction impact, greatly reduce the cross-talk of the communications cable, the electric field that wherein capacitive sensing producesThere is both positive and negative polarity, after adjacent two induction field stacks, can cancel each other, reduce mutual capacitively coupled, withTime taken into account other electric parameter, also avoided signal of telecommunication delay inequality increase.
4, the present invention has the compound data cable of low-loss of interference free performance, its steel conductor, the first metalBraid and proof copper-wire braided screen layer are put down by some of being positioned at oversheath body and " people " font connecting portionRow plain conductor electrical connection alternately, reduces cross-talk and the signal of telecommunication delay inequality of the communications cable, and avoidsThe power attenuation of signal, improved the stability of signal power and performance; Secondly, steel conductor, the first gold medalBelong to braid and proof copper-wire braided screen layer by being positioned at oversheath body and " people " font connecting portion someParallel plain conductor alternately electrical connection, and described adjacent 2 plain conductors be spaced apart conduction cable core2.4～3.7 times of twisting pitch, further reduce cross-talk and the signal of telecommunication delay inequality of the communications cable.
Brief description of the drawings
Accompanying drawing 1 has the compound data cable structural representation one of low-loss of interference free performance for the present invention;
Accompanying drawing 2 has the compound data cable structural representation two of low-loss of interference free performance for the present invention.
In above accompanying drawing: 1, steel conductor; 2, coaxial conductor; 3, copper conductor; 31, polyethylene layer; 4,Oversheath body; 41, the first sub-sheath; 42, the second sub-sheath; 43, the 3rd sub-sheath; 5, plastic insulationLayer; 6, the first wire sheathing; 7, the first inner restrictive coating; 8, conduction cable core; 81, the first twisted wire pair;82, the second twisted wire pair; 83, the 3rd twisted wire pair; 84, the 4th twisted wire pair; 9, foil shielding layer; 10, poly-Ester band; 11, the second inner restrictive coating; 12, " people " font connecting portion; 121, first connects muscle portion; 122,Two connect muscle portion; 123, the 3rd connects muscle portion; 13, plain conductor; 131, the first branch end; 132, second pointZhi Duan; 133, the 3rd branch end; 14, proof copper-wire braided screen layer; 15, the second wire sheathing.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment 1: a kind of compound data cable of low-loss with interference free performance, comprising: steel conductor 1,Coaxial conductor 2, eight are coated with copper conductor 3 and the oversheath body 4 of polyethylene layer 31; Described coaxial conductor 2Outer surface is coated with plastic insulating layer 5, and these plastic insulating layer 5 outer surfaces are coated with the first wire sheathing 6,The first inner restrictive coating 7 is coated on described the first wire sheathing 6 outer surfaces;
Described eight copper conductors 3 are four pairs of twisted wires pair as information communication of stranded formation between two, described four pair twistsLine centering the first twisted wire to 81, the second twisted wire to 82, the 3rd twisted wire to 83 and the 4th twisted wire counterclockwise to 84Be arranged in order and stranded formation conduction cable core 8, the first twisted wires to 81 and the 3rd twisted wire to 83 and second twisted wire pair82 and the 4th twisted wire to 84 alternately, described four twisted pair wires are all coated with foil shielding layer to outer surface separately9, one polyester belts 10 are wrapped in described foil shielding layer 9 outer surfaces, described in the second inner restrictive coating 11 is coated onPolyester belt 10 outer surfaces;
Described oversheath body 4 comprises the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, thisThe first sub-sheath 41, the second sub-sheath 42 have one " people " font with the 3rd sub-sheath 43 centers and are connectedPortion 12, the first muscle portion of company 121 of this " people " font connecting portion 12, the second muscle portion 122 of company and the 3rd connect musclePortion 123 is connected respectively to described the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, the firstSub-sheath 41 is coated on described steel conductor 1 outer surface, and the second sub-sheath 42 is coated on described the first inner sheathLayer 7 outer surface, the 3rd sub-sheath 43 is coated on described the second inner restrictive coating 11 outer surfaces;
Between described the 3rd sub-sheath 43 and the first inner restrictive coating 11, be provided with proof copper-wire braided screen layer 14, both canNot increase external diameter, can ensure again the tractive force of needs, thereby ensure in the 3rd sub-sheath 43 and firstAdhesive between restrictive coating 11, has played humidification, has very large tensile strength, also can eliminateOr reduce the stress of cable in the time of mobile or twisting states, the service life of improving cable; Secondly, furtherStrengthen interference free performance.
Described steel conductor 1, the first wire sheathing 6 and proof copper-wire braided screen layer 14 are by being positioned at oversheath body4 are electrically connected with some parallel plain conductors 13 alternately in " people " font connecting portion 12, described inBe spaced apart conduction cable core 8 twisting pitch 2.4～3.7 times of adjacent 2 plain conductors 13, plain conductor 13The first branch end 131 be connected to described steel conductor 1, the second branch end 132 of plain conductor 13 is connected toDescribed the first wire sheathing 6, the 3rd branch end 133 of plain conductor 13 is connected to described proof copper-wire braided screenCover layer 14;
Described the first twisted wire is 15～15.5mm to 81 pitch, and described the second twisted wire to 82 pitch is13.5～13.9mm, described the 3rd twisted wire is 14.2～14.6mm to 83 pitch, described the 4th twisted wire is to 84Pitch be 12.7～13.1mm;
Adjacent segments apart from design formula is: 0.002 < | 1 h 1 - 1 h 2 | &le; 0.013 ,
The pitch design of being separated by formula is: 0.002 < | 1 h 1 - 1 h 3 | &le; 0.011 ;
H1 is the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 jointDistance, h3 is the 3rd twisted wire to 83 pitch.
Described the first twisted wire is 15.2mm to 81 pitch, and described the second twisted wire is 13.7mm to 82 pitch,Described the 3rd twisted wire is 14.4mm to 83 pitch, and described the 4th twisted wire is 12.9mm to 84 pitch.
Above-mentioned four twisted pair wire strands form conduction cable core 8, and these conduction cable core 8 twisting pitch are the 4th twisted wire pair9.8 times of 84 pitches.
Above-mentioned foil shielding layer 9 is made up of laminated polyester film and the aluminium foil layer that is positioned at its medial surface, described polyesterThin layer thickness is 0.020 ± 0.002mm, and described aluminium foil layer thickness is 0.014 ± 0.002mm; Above-mentioned firstMuscle portion of company, second connects muscle portion and the first adjacent angle of muscle portion of company is 120 °; Above-mentioned steel conductor 1 and copper conductor 3All annealed PROCESS FOR TREATMENT.
Embodiment 2: a kind of compound data cable of low-loss with interference free performance, comprising: steel conductor 1,Coaxial conductor 2, eight are coated with copper conductor 3 and the oversheath body 4 of polyethylene layer 31; Described coaxial conductor 2Outer surface is coated with plastic insulating layer 5, and these plastic insulating layer 5 outer surfaces are coated with the first wire sheathing 6,The first inner restrictive coating 7 is coated on described the first wire sheathing 6 outer surfaces, described the first inner restrictive coating 7 withBetween the second sub-sheath 42, there is the second wire sheathing 15;
Described eight copper conductors 3 are four pairs of twisted wires pair as information communication of stranded formation between two, described four pair twistsLine centering the first twisted wire to 81, the second twisted wire to 82, the 3rd twisted wire to 83 and the 4th twisted wire counterclockwise to 84Be arranged in order and stranded formation conduction cable core 8, the first twisted wires to 81 and the 3rd twisted wire to 83 and second twisted wire pair82 and the 4th twisted wire to 84 alternately, described four twisted pair wires are all coated with foil shielding layer to outer surface separately9, one polyester belts 10 are wrapped in described foil shielding layer 9 outer surfaces, described in the second inner restrictive coating 11 is coated onPolyester belt 10 outer surfaces;
Described oversheath body 4 comprises the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, thisThe first sub-sheath 41, the second sub-sheath 42 have one " people " font with the 3rd sub-sheath 43 centers and are connectedPortion 12, the first muscle portion of company 121 of this " people " font connecting portion 12, the second muscle portion 122 of company and the 3rd connect musclePortion 123 is connected respectively to described the first sub-sheath 41, the second sub-sheath 42 and the 3rd sub-sheath 43, the firstSub-sheath 41 is coated on described steel conductor 1 outer surface, and the second sub-sheath 42 is coated on described the first inner sheathLayer 7 outer surface, the 3rd sub-sheath 43 is coated on described the second inner restrictive coating 11 outer surfaces;
Between described the 3rd sub-sheath 43 and the first inner restrictive coating 11, be provided with proof copper-wire braided screen layer 14, both canNot increase external diameter, can ensure again the tractive force of needs, thereby ensure in the 3rd sub-sheath 43 and firstAdhesive between restrictive coating 11, has played humidification, has very large tensile strength, also can eliminateOr reduce the stress of cable in the time of mobile or twisting states, the service life of improving cable; Secondly, furtherStrengthen interference free performance.
Described steel conductor 1, the second wire sheathing 15 and proof copper-wire braided screen layer 14 are by being positioned at oversheath body4 are electrically connected with some parallel plain conductors 13 alternately in " people " font connecting portion 12, described inBe spaced apart conduction cable core 8 twisting pitch 2.4～3.7 times of adjacent 2 plain conductors 13, plain conductor 13The first branch end 131 be connected to described steel conductor 1, the second branch end 132 of plain conductor 13 is connected toDescribed the second wire sheathing 15, the 3rd branch end 133 of plain conductor 13 is connected to described proof copper-wire braided screenCover layer 14;
Described the first twisted wire is 15.1mm to 81 pitch, and described the second twisted wire is 13.5mm to 82 pitch,Described the 3rd twisted wire is 14.3mm to 83 pitch, and described the 4th twisted wire is 12.8mm to 84 pitch;
Adjacent segments apart from design formula is: 0.002 < | 1 h 1 - 1 h 2 | &le; 0.013 ,
The pitch design of being separated by formula is: 0.002 < | 1 h 1 - 1 h 3 | &le; 0.011 ;
H1 is the first twisted wire to 81 pitch, h2 be the second twisted wire to 82 or the 4th twisted wire to 84 jointDistance, h3 is the 3rd twisted wire to 83 pitch.
Above-mentioned four twisted pair wire strands form conduction cable core 8, and these conduction cable core 8 twisting pitch are the 4th twisted wire pair7.7 times of 84 pitches.
Foregoing is further described below.
The design of aluminum foil material
According to communication cable standard and requirement, shielding is made up of one deck one side clad aluminum foil and a drain wire,One side clad aluminum foil requires to refer to following table:
The technical requirement of one side clad aluminum foil
Weave copper wire material used design
According to communication cable standard and requirement, the braided material of armor can be single circular copper wire or zinc-plated circleCopper cash, allows unidirectional sub-thread broken string length to be not more than 150mm, and trimmed is answered in broken string termination
The main performance index of finished cable
Conductor DC resistance (20 DEG C) :≤96 Ω/km;
The characteristic impedance (20 DEG C) of paired cable: 100 ± 15 Ω;
The characteristic impedance (20 DEG C) of coaxial cable: 75 ± 15 Ω;
The insulaion resistance of cable: >=10000M Ω km.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow is familiar with this skillThe personage of art can understand content of the present invention and implement according to this, can not limit protection model of the present invention with thisEnclose. All equivalences that Spirit Essence is done according to the present invention change or modify, and all should be encompassed in protection of the present inventionWithin scope.

Claims (3)

1. the compound data cable of low-loss with interference free performance, is characterized in that: comprising: steel conductor (1), coaxial conductor (2), eight are coated with copper conductor (3) and the oversheath body (4) of polyethylene layer (31); Described coaxial conductor (2) outer surface is coated with plastic insulating layer (5), and this plastic insulating layer (5) outer surface is coated with the first wire sheathing (6), and the first inner restrictive coating (7) is coated on described the first wire sheathing (6) outer surface;
Described eight copper conductors (3) are four pairs of twisted wires pair as information communication of stranded formation between two, described four twisted pair wire centering the first twisted wires are to (81), the second twisted wire is to (82), the 3rd twisted wire is arranged in order (84) and stranded formation conduction cable core (8) counterclockwise to (83) and the 4th twisted wire, the first twisted wire to (81) and the 3rd twisted wire to (83) and the second twisted wire to (82) and the 4th twisted wire to (84) alternately, described four twisted pair wires are all coated with foil shielding layer (9) to outer surface separately, one polyester belt (10) is wrapped in described foil shielding layer (9) outer surface, the second inner restrictive coating (11) is coated on described polyester belt (10) outer surface,
Described oversheath body (4) comprises the first sub-sheath (41), the second sub-sheath (42) and the 3rd sub-sheath (43), this first sub-sheath (41), the second sub-sheath (42) and the 3rd sub-sheath (43) center have one " people " font connecting portion (12), first of this " people " font connecting portion (12) connects muscle portion (121), the second muscle portion of company (122) and the 3rd connects muscle portion (123) and is connected respectively to described the first sub-sheath (41), the second sub-sheath (42) and the 3rd sub-sheath (43), the first sub-sheath (41) is coated on described steel conductor (1) outer surface, the second sub-sheath (42) is coated on described the first inner restrictive coating (7) outer surface, the 3rd sub-sheath (43) is coated on described the second inner restrictive coating (11) outer surface,
Described steel conductor (1), the first wire sheathing (6) and proof copper-wire braided screen layer (14) are by being positioned at some parallel plain conductor (13) electrical connections alternately of oversheath body (4) and " people " font connecting portion (12);
Described the first twisted wire is 15 ~ 15.5mm to the pitch of (81), and described the second twisted wire is 13.5 ~ 13.9mm to the pitch of (82), and described the 3rd twisted wire is 14.2 ~ 14.6mm to the pitch of (83), and described the 4th twisted wire is 12.7 ~ 13.1mm to the pitch of (84);
H1 is the pitch of the first twisted wire to (81), h2 be the second twisted wire to (82) or the pitch of the 4th twisted wire to (84), h3 is the pitch of the 3rd twisted wire to (83).
2. the compound data cable of low-loss with interference free performance according to claim 1, it is characterized in that: described the first twisted wire is 15.2mm to the pitch of (81), described the second twisted wire is 13.7mm to the pitch of (82), described the 3rd twisted wire is 14.4mm to the pitch of (83), and described the 4th twisted wire is 12.9mm to the pitch of (84).
3. the compound data cable of low-loss with interference free performance according to claim 1, is characterized in that: described four twisted pair wire strands form conduction cable core (8), and this conduction cable core (8) twisting pitch is the 4th twisted wire to (84)7.7~9.8 doubly.
CN201310113817.5A 2013-04-03 2013-04-03 There is the compound data cable of low-loss of interference free performance Active CN103236317B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201510979853.9A CN105469898A (en) 2013-04-03 2013-04-03 Overhead low-loss data transmission line composite cable
CN201510991568.9A CN105469883B (en) 2013-04-03 2013-04-03 Communication data composite rope
CN201310113817.5A CN103236317B (en) 2013-04-03 2013-04-03 There is the compound data cable of low-loss of interference free performance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310113817.5A CN103236317B (en) 2013-04-03 2013-04-03 There is the compound data cable of low-loss of interference free performance

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