CN105895243A - Luminous intrinsic safety composite low-voltage cable for environment-friendly intelligent power grid and fabrication method of cable - Google Patents
Luminous intrinsic safety composite low-voltage cable for environment-friendly intelligent power grid and fabrication method of cable Download PDFInfo
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- CN105895243A CN105895243A CN201610476640.9A CN201610476640A CN105895243A CN 105895243 A CN105895243 A CN 105895243A CN 201610476640 A CN201610476640 A CN 201610476640A CN 105895243 A CN105895243 A CN 105895243A
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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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- 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
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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
- H01B7/36—Insulated conductors or cables characterised by their form with distinguishing or length marks
- H01B7/361—Insulated conductors or cables characterised by their form with distinguishing or length marks being the colour of the insulation or conductor
-
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a luminous intrinsic safety composite low-voltage cable for an environment-friendly intelligent power grid and a fabrication method of the cable. The cable comprises a cable core, wherein the cable core is formed by twisting a single insulation wire core or a plurality of insulation wire cores, a ceramic fireproof layer wraps the cable core, a high-strength halogen-free low smoke flame-retardant olefin outer protection layer is extruded outside the ceramic fireproof layer, a fluorescent sensing red warning color tape is arranged in the high-strength halogen-free low smoke flame-retardant olefin outer protection layer, the insulation wire core comprises a conductor, a semi-conduction inner shielding layer, an insulation layer, a semi-conduction outer shielding layer and a metal shielding layer, the semi-conduction inner shielding layer, the insulation layer and the semi-conduction outer shielding layer are extruded on the conductor in a three-layer co-extrusion manner, the metal shielding layer is extruded outside the semi-conduction outer shielding layer, and a high-conduction alloy wire is embedded in the metal shielding layer. The cable is reasonable in structure design, the backward yield is eliminated, the transformation of scientific and technological achievements is achieved, the product cost performance is greatly improved, the resource is saved, and the benefit is brought to people.
Description
Technical field
The present invention relates to electric wire field, it is specifically related to a kind of environment-friendly type intelligent electrical network rated voltage 8.7/15kv or 26/35kv luminescence intrinsic safety composite construction high voltage power cable and preparation method thereof, a kind of run essential safety and electrical network and environment-friendly type intelligent electrical network rated voltage 35kV of the two-way interaction of power consumer and following luminous intrinsic safety composite construction power cable and manufacture method thereof for grid automation control, electric power transmission information remote collection, cable, its meet power supply system to intelligence, at a high speed, reliably, the demand that develops of the direction of safety.
Background technology
The cable that traditional handicraft manufactures, production technology cost is high, and cost performance is low, and Technology falls behind, and Practical Performance is poor；Import similar products do not match with domestic electrical system, cost will be greatly improved, and construction and use during break down repeatedly, intelligence degree is low, have halogen not environmentally, without essential safety function, cause producing, living and be obstructed without factors such as warnings, even cause disaster to occur.
Traditional electric power cable production technology process used for intelligent electric network there is problems in that 1) poor performance of material own causes insulating properties, machinery, electric property poor, and containing halogen；2) unreasonable structure, without high water conservancy diversion B alloy wire, electric capacity and impedance are relatively big, and shielding properties and interference free performance are poor, without explosion prevention function；3) not having fluorescence sensing redness warning colour band, cable construction fault rate is high, and essential safety does not ensure；4), while the fire-retardant and fire resistance of cable reaches A level, manufacturing cost is high, and cost performance is low；5) waste national resources and social labor power.
Summary of the invention
In order to overcome the deficiencies in the prior art, it is provided that it is good that one has aging resistance, embrittlement performance, weather-resistant and the fabulous luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network of shielding properties, interference free performance and explosion-proof performance.
The invention also discloses the preparation method of the luminous intrinsic safety composite high pressure cable of this environment-friendly type intelligent electrical network.
For achieving the above object, the invention discloses a kind of environment-friendly type intelligent electrical network luminescence intrinsic safety composite high pressure cable, including cable core, described cable core is made up of single insulated wire cores or many insulated wire cores are stranded forms；At the outer wrapped ceramic fireprotection layer of cable core, outside ceramic fireprotection layer, extrude the high-strength halogen-free low-smoke and flame retardant alkene outer jacket that thickness is 4.2mm, in high-strength halogen-free low-smoke and flame retardant alkene outer jacket, be provided with fluorescence sensing redness warning colour band；Described insulated wire cores by conductor, use the semiconductive internal shield that thickness is 0.8mm that three-layer co-extruded mode is extruded on conductor, thickness to be the insulating barrier of 4.5mm, thickness is the semiconductive external shielding layer of 0.8mm and constitutes around the metal screen layer that the thickness wrapped in outside semiconductive external shielding layer is 0.1mm；Described metal screen layer is embedded in the height that external diameter is 0.8mm and leads B alloy wire.
Preferably, described cable core is that many insulated wire cores are stranded when forming, and fills low smoke, zero halogen glass cord in the gap of cable core.
Preferably, the most wrapped metal armor layers between described ceramic fireprotection layer and high-strength halogen-free low-smoke and flame retardant alkene outer jacket.
Preferably, described metal armor layers is embedded in height and leads B alloy wire.
Preferably, described conductor is led soft copper silk by the height of 60 Φ 2.95mm and is carried out nano die and press stranded, and stranded external diameter is 23.5mm, and cross section is 400mm2。
Preferably, described ceramic fireprotection layer internal layer is halogen-free low-smoke high-flame band, and outer layer is the ceramic fire prevention separation sleeve of thickness 2.2mm.
A kind of preparation method of the luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network, step is as follows:
1) cathode copper melting, continuous casting and rolling goes out Φ 8.0 mm electrolysis height and leads copper bar；
2) Φ 8.0 mm electrolysis height is led that copper bar carries out wire drawing, annealing is made the height of Φ 2.95mm and led soft copper silk；
3) height of 60 Φ 2.95 mm is led soft copper silk carry out nano die and press stranded, stranded external diameter be the cross section of 23.5mm be 400mm2Conductor；
4) co-extrusion semiconductive inner shield on conductor, insulation, semiconductive external shield three layers, uses extrusion die, 400mm2Conductor inner shield thickness is 0.8mm, and insulation thickness is 4.5 mm, external shield thickness 0.8mm, and external shield external diameter is 35.7mm；
5) the outer wrapped thickness of semiconductive external shield be 0.10mm, width be that the anaerobic soft copper band of 40mm constitutes insulated wire cores, and embed the high water conservancy diversion B alloy wire that external diameter is 0.80mm, shield external diameter 36.2mm；
6) then 3 insulated wire cores twisted synthesizing cables, low smoke, zero halogen glass cord, laying up diameter 80mm are filled in cable core gap；
7) the outer wrapped halogen-free low-smoke high-flame band of cable core after stranding, and extruded ceramic chemoprevention fire separation sleeve, separation sleeve thickness is 2.2mm；
8) the outer thickness 0.8mm of separation sleeve, width are that the bilayer of 60mm puts up wrapped galvanized steel strip armor, and embed the high water conservancy diversion B alloy wire that external diameter is 0.98mm；
9) extruding thermoplasticity blueness high-strength halogen-free low-smoke flame-proof polyolefin oversheath and injection red fluorescence sensing warning colour band in the outer one-shot forming of steel-tape armouring layer, jacket thickness is 4.2mm；
10) last, check qualified warehouse-in.
Compared with prior art, the beneficial effects of the present invention is:
The present invention uses sophisticated technologies technology the most energy-efficient height conductor, and resistivity ratio national regulation is low at least 15%；Metallic shield or metal armor layers embed high water conservancy diversion B alloy wire, and capacity ratio conventional power cable is little by more than 20, and impedance ratio conventional power cable is little by more than 15；Inner sheath ceramic fireprotection layer; while the fire-retardant and fire resistance of cable reaches A level; manufacturing cost reduces at least 10; between 350 DEG C to 700 DEG C during high temperature; hard ceramic protective layer can be quickly formed; this hard ceramic protective layer is in the flame of 650 DEG C to 1000 DEG C high temperature; the integrity of structure can be kept in 0.5 to 2 hours; thus play isolation flame, fireproof effect; ensure that in case of fire electric power, communication unimpeded, win the quality time for security against fire；During one-time formed blue high-strength halogen-free low-smoke flame-proof polyolefin oversheath and fluorescence sensing redness warning colour band get integrated into environment, not only act as safe warning function, also beautify urban environmental landscape, and cable construction fault rate at least reduces by 30, safety coefficient at least improves 25, really ensure that essential safety；Reasonable in design, has eliminated the production capacity fallen behind, it is achieved that the transformation of scientific and technical result, product cost is greatly improved, and economizes on resources, and brings benefit to the people.
Accompanying drawing explanation
Fig. 1 is the single structural representation of the present invention；
Fig. 2 is the multicore structure schematic diagram of the present invention；
Fig. 3 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and specific embodiment, it is further elucidated with the present invention, it should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention, after having read the present invention, those skilled in the art all fall within the application claims limited range to the amendment of the various equivalent form of values of the present invention.
As it is shown in figure 1, a kind of environment-friendly type intelligent electrical network luminescence intrinsic safety composite high pressure cable, including cable core, described cable core is made up of single insulated wire cores；Direct wrapped ceramic fireprotection layer 8 outside cable core, extrudes the high-strength halogen-free low-smoke and flame retardant alkene outer jacket 10 that thickness is 4.2mm outside ceramic fireprotection layer 8, be provided with multiple fluorescence sensing redness warning colour band 11 in high-strength halogen-free low-smoke and flame retardant alkene outer jacket；Described insulated wire cores by conductor 1, use the semiconductive internal shield 2 that thickness is 0.8mm that three-layer co-extruded mode is extruded on conductor, thickness to be the insulating barrier 3 of 4.5mm, thickness is the semiconductive external shielding layer 4 of 0.8mm and constitutes around the metal screen layer 5 that the thickness wrapped in outside semiconductive external shielding layer is 0.1mm；Described metal screen layer 5 is embedded in the height that external diameter is 0.8mm and leads B alloy wire 7, has fabulous shielding properties, interference free performance and explosion-proof performance.
Described conductor 1 is led soft copper silk by the height of 60 Φ 2.95mm and is carried out nano die and press stranded, and stranded external diameter is 23.5mm, and cross section is 400mm2；Described ceramic fireprotection layer 8 internal layer is halogen-free low-smoke high-flame band; outer layer is the ceramic fire prevention separation sleeve of thickness 2.2mm; between 350 DEG C to 700 DEG C during high temperature; hard ceramic protective layer can be quickly formed; this hard ceramic protective layer is in the flame of 650 DEG C to 1000 DEG C high temperature; the integrity of structure can be kept in 0.5 to 2 hours; thus play isolation flame, fireproof effect; ensure that in case of fire electric power, communication unimpeded, win the quality time for security against fire.
As in figure 2 it is shown, be with graph structure difference: the cable core of this cable is formed by many insulated wire cores are stranded；Low smoke, zero halogen glass cord 6 is filled in the gap of cable core；The most wrapped metal armor layers 9 between described ceramic fireprotection layer 8 and high-strength halogen-free low-smoke and flame retardant alkene outer jacket 10, and be embedded in, at metal armor layers, the height that external diameter is 0.98mm and lead B alloy wire 7, there is fabulous shielding properties, interference free performance and explosion-proof performance.
As it is shown on figure 3, the preparation method of the luminous intrinsic safety composite high pressure cable of a kind of environment-friendly type intelligent electrical network, step is as follows:
1) cathode copper melting, continuous casting and rolling goes out Φ 8.0 mm electrolysis height and leads copper bar；
2) Φ 8.0 mm electrolysis height is led that copper bar carries out wire drawing, annealing is made the height of Φ 2.95mm and led soft copper silk；
3) height of 60 Φ 2.95 mm is led soft copper silk carry out nano die and press stranded, stranded external diameter be the cross section of 23.5mm be 400mm2Conductor；
4) co-extrusion semiconductive inner shield on conductor, insulation, semiconductive external shield three layers, uses extrusion die, 400mm2Conductor inner shield thickness is 0.8mm, and insulation thickness is 4.5 mm, external shield thickness 0.8mm, and external shield external diameter is 35.7mm；
5) the outer wrapped thickness of semiconductive external shield be 0.10mm, width be that the anaerobic soft copper band of 40mm constitutes insulated wire cores, and embed the high water conservancy diversion B alloy wire that external diameter is 0.80mm, shield external diameter 36.2mm；
6) then 3 insulated wire cores twisted synthesizing cables, low smoke, zero halogen glass cord, laying up diameter 80mm are filled in cable core gap；
7) the outer wrapped halogen-free low-smoke high-flame band of cable core after stranding, and extruded ceramic chemoprevention fire separation sleeve, separation sleeve thickness is 2.2mm；
8) the outer thickness 0.8mm of separation sleeve, width are that the bilayer of 60mm puts up wrapped galvanized steel strip armor, and embed the high water conservancy diversion B alloy wire that external diameter is 0.98mm；
9) extruding thermoplasticity blueness high-strength halogen-free low-smoke flame-proof polyolefin oversheath and injection red fluorescence sensing warning colour band in the outer one-shot forming of steel-tape armouring layer, jacket thickness is 4.2mm；
10) last, check qualified warehouse-in.
The above is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, it is also possible to make some modification and improvement, and these also should be regarded as belonging to protection scope of the present invention.
Claims (7)
1. environment-friendly type intelligent electrical network is with a luminous intrinsic safety composite high pressure cable, including cable core, it is characterised in that described cable core is made up of single insulated wire cores or many insulated wire cores are stranded forms；At the outer wrapped ceramic fireprotection layer of cable core, outside ceramic fireprotection layer, extrude the high-strength halogen-free low-smoke and flame retardant alkene outer jacket that thickness is 4.2mm, in high-strength halogen-free low-smoke and flame retardant alkene outer jacket, be provided with fluorescence sensing redness warning colour band；Described insulated wire cores by conductor, use the semiconductive internal shield that thickness is 0.8mm that three-layer co-extruded mode is extruded on conductor, thickness to be the insulating barrier of 4.5mm, thickness is the semiconductive external shielding layer of 0.8mm and constitutes around the metal screen layer that the thickness wrapped in outside semiconductive external shielding layer is 0.1mm；Described metal screen layer is embedded in the height that external diameter is 0.8mm and leads B alloy wire.
The luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network the most according to claim 1, it is characterised in that: described cable core is that many insulated wire cores are stranded when forming, and fills low smoke, zero halogen glass cord in the gap of cable core.
3. according to claim 1 environment-friendly type intelligent electrical network luminescence intrinsic safety composite high pressure cable, it is characterised in that: the most wrapped metal armor layers between described ceramic fireprotection layer and high-strength halogen-free low-smoke and flame retardant alkene outer jacket.
The luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network the most according to claim 3, it is characterised in that: described metal armor layers is embedded in the height that external diameter is 0.98mm and leads B alloy wire.
The luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network the most according to claim 1, it is characterised in that: described conductor is led soft copper silk by the height of 60 Φ 2.95mm and is carried out nano die and press stranded, and stranded external diameter is 23.5mm, and cross section is 400mm2。
The luminous intrinsic safety composite high pressure cable of environment-friendly type intelligent electrical network the most according to claim 1, it is characterised in that: described ceramic fireprotection layer internal layer is halogen-free low-smoke high-flame band, and outer layer is the ceramic fire prevention separation sleeve of thickness 2.2mm.
7. the preparation method of luminous intrinsic safety composite high pressure cable of the environment-friendly type intelligent electrical network as described in claim 1-6 any claim, it is characterised in that: step is as follows:
1) cathode copper melting, continuous casting and rolling goes out Φ 8.0 mm electrolysis height and leads copper bar；
2) Φ 8.0 mm electrolysis height is led that copper bar carries out wire drawing, annealing is made the height of Φ 2.95mm and led soft copper silk；
3) height of 60 Φ 2.95 mm is led soft copper silk carry out nano die and press stranded, stranded external diameter be the cross section of 23.5mm be 400mm2Conductor；
4) co-extrusion semiconductive inner shield on conductor, insulation, semiconductive external shield three layers, uses extrusion die, 400mm2Conductor inner shield thickness is 0.8mm, and insulation thickness is 4.5 mm, external shield thickness 0.8mm, and external shield external diameter is 35.7mm；
5) the outer wrapped thickness of semiconductive external shield be 0.10mm, width be that the anaerobic soft copper band of 40mm constitutes insulated wire cores, and embed the high water conservancy diversion B alloy wire that external diameter is 0.80mm, shield external diameter 36.2mm；
6) then 3 insulated wire cores twisted synthesizing cables, low smoke, zero halogen glass cord, laying up diameter 80mm are filled in cable core gap；
7) the outer wrapped halogen-free low-smoke high-flame band of cable core after stranding, and extruded ceramic chemoprevention fire separation sleeve, separation sleeve thickness is 2.2mm；
8) the outer thickness 0.8mm of separation sleeve, width are that the bilayer of 60mm puts up wrapped galvanized steel strip armor, and embed the high water conservancy diversion B alloy wire that external diameter is 0.98mm；
9) extruding thermoplasticity blueness high-strength halogen-free low-smoke flame-proof polyolefin oversheath and injection red fluorescence sensing warning colour band in the outer one-shot forming of steel-tape armouring layer, jacket thickness is 4.2mm；
10) last, check qualified warehouse-in.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476640.9A CN105895243A (en) | 2016-06-27 | 2016-06-27 | Luminous intrinsic safety composite low-voltage cable for environment-friendly intelligent power grid and fabrication method of cable |
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| CN201610476640.9A CN105895243A (en) | 2016-06-27 | 2016-06-27 | Luminous intrinsic safety composite low-voltage cable for environment-friendly intelligent power grid and fabrication method of cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448931A (en) * | 2016-11-19 | 2017-02-22 | 安新生 | Manufacturing method of fireproof cable |
| CN110767380A (en) * | 2019-11-04 | 2020-02-07 | 安徽恒晶电缆集团有限公司 | Cable production process with high interference resistance |
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| CN2070493U (en) * | 1990-06-27 | 1991-01-30 | 乐清县自动化仪表五厂 | Twisted pair shielding control flexible wire for intrinsic safety |
| US20020185299A1 (en) * | 1999-03-10 | 2002-12-12 | Wolfgang Giebel | Underwater cable |
| CN201994093U (en) * | 2011-03-28 | 2011-09-28 | 安徽德力电热电缆有限公司 | Compensating cable for intrinsic safety system |
| CN202473303U (en) * | 2012-03-23 | 2012-10-03 | 安徽天龙电器线缆集团有限公司 | Control cable for intrinsically-safe type anti-explosion circuit |
| CN203288348U (en) * | 2013-05-24 | 2013-11-13 | 江苏新长峰线缆有限公司 | Intrinsic safety explosion-proof type power cable |
| CN203338847U (en) * | 2013-07-27 | 2013-12-11 | 安徽太平洋电缆股份有限公司 | Medium-voltage fire-resisting power cable |
| CN105655039A (en) * | 2014-08-27 | 2016-06-08 | 沈群华 | Light-emitting type cable |
| CN205827986U (en) * | 2016-06-27 | 2016-12-21 | 无锡市恒汇电缆有限公司 | Environment-friendly type intelligent electrical network luminescence intrinsic safety composite high pressure cable |
-
2016
- 2016-06-27 CN CN201610476640.9A patent/CN105895243A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2070493U (en) * | 1990-06-27 | 1991-01-30 | 乐清县自动化仪表五厂 | Twisted pair shielding control flexible wire for intrinsic safety |
| US20020185299A1 (en) * | 1999-03-10 | 2002-12-12 | Wolfgang Giebel | Underwater cable |
| CN201994093U (en) * | 2011-03-28 | 2011-09-28 | 安徽德力电热电缆有限公司 | Compensating cable for intrinsic safety system |
| CN202473303U (en) * | 2012-03-23 | 2012-10-03 | 安徽天龙电器线缆集团有限公司 | Control cable for intrinsically-safe type anti-explosion circuit |
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| CN203338847U (en) * | 2013-07-27 | 2013-12-11 | 安徽太平洋电缆股份有限公司 | Medium-voltage fire-resisting power cable |
| CN105655039A (en) * | 2014-08-27 | 2016-06-08 | 沈群华 | Light-emitting type cable |
| CN205827986U (en) * | 2016-06-27 | 2016-12-21 | 无锡市恒汇电缆有限公司 | Environment-friendly type intelligent electrical network luminescence intrinsic safety composite high pressure cable |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106448931A (en) * | 2016-11-19 | 2017-02-22 | 安新生 | Manufacturing method of fireproof cable |
| CN110767380A (en) * | 2019-11-04 | 2020-02-07 | 安徽恒晶电缆集团有限公司 | Cable production process with high interference resistance |
| CN110767380B (en) * | 2019-11-04 | 2022-02-11 | 安徽恒晶电缆集团有限公司 | Cable production process with high interference resistance |
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