CN203536026U - Crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage - Google Patents
Crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage Download PDFInfo
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- CN203536026U CN203536026U CN201320687781.7U CN201320687781U CN203536026U CN 203536026 U CN203536026 U CN 203536026U CN 201320687781 U CN201320687781 U CN 201320687781U CN 203536026 U CN203536026 U CN 203536026U
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Abstract
The utility model relates to a crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage, which is provided with a multi-core copper conductor. Insulating layers are uniformly packaged on the copper conductors of the multi-core copper conductor through squeezing. The copper conductors which are packaged by the insulating layers are intertwisted to the cable core. A winding belt is wound at the periphery of the cable core. A copper wire braided shield is arranged at the periphery of winding belt. An insulation isolation layer is packaged on the copper wire braided shield through squeezing. A copper belt shield surrounds the insulation isolation layer. An isolation sleeve is packaged on the copper belt shield through squeezing. A steel band armor is arranged at the periphery of the isolation sleeve. An oversheath is packaged on the steel band armor through squeezing. The crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable has the following advantages: excellent environment-friendly performance, high flame retardance, high shielding performance, high safety, and capability of bearing certain mechanical force.
Description
Technical field
The utility model relates to a kind of crosslinked polyetylene insulated double shield steel-tape armouring environmental-protection flame-retardant control cables.
Background technology
Along with economic develop rapidly, under particular surroundings, cable has been proposed to new requirement, particularly as requiring cable, the public places such as hospital, subway, airport there is good shielding, environmental protection, fire resistance.Control cables is as connecting line between electrical equipment, instrument and automatics; be mainly used in controlling, monitoring interlock circuit and protection circuit etc.; play transmission control action; existing shielding control cables is one deck copper strips or proof copper-wire braided shielding; insulation, sheath and other auxiliary material mostly are Halogen material; shielding, environmental protection, fire resistance are poor, particularly in important electromagnetic interference, send out the existing shielding control cables in public place in assorted situation and are difficult to meet its requirement.
Summary of the invention
The purpose of this utility model is for above-mentioned existing problems, and a kind of advantages of good shielding performance, safe, 450/750V and the following crosslinked polyetylene insulated double shield steel-tape armouring environmental-protection flame-retardant control cables that can bear certain mechanical external force are provided.
The purpose of this utility model is achieved in that to have multicore copper conductor, the copper conductor of multicore copper conductor extrudes equably and is covered with insulating barrier separately, extrude the copper conductor that is covered with insulating barrier and be twisted into cable core, cable core periphery is surrounded with twining package tape, twining package tape periphery is provided with proof copper-wire braided shielding, proof copper-wire braided shielding extrudes and is covered with dielectric isolation layer, dielectric isolation layer periphery is surrounded with copper strip shielding, copper strip shielding extrudes and is covered with separation sleeve, separation sleeve periphery is provided with steel-tape armouring, extrudes and be covered with oversheath on steel-tape armouring.
The utility model, copper conductor forms circular solids conductor or circular stranded conductor by the soft circular copper wire of annealing, and copper conductor cross section specification is 0.75～10mm
2, core number is 2～37 cores.
The utility model, insulating barrier is extruded and is formed by organosilane crosslinked polyethylene insulation material, and thickness of insulating layer is 0.6～0.7mm.
The utility model, extruding the outermost layer direction of lay that is covered with the cable core that the copper conductor of insulating barrier is twisted into is dextrad, 20 times of twisting pitch≤conductor assembly outer diameter when insulating barrier adopts numeral identification, are arranged by natural numerical order clockwise direction from low to high to skin by internal layer in stranded process.
The utility model, extrudes and is covered with the cable core gap-fill that the copper conductor of insulating barrier is twisted into and has filler.
The utility model, filler be non-hygroscopic and applicable cable operating temperature and with insulating barrier compatible low smoke and zero halogen material mutually.
The utility model, twining package tape is by the not halogen-containing band of two-layer non-hygroscopic overlapping wrapped composition.
The utility model, proof copper-wire braided shielding is comprised of diameter 0.15～0.30mm soft circular copper wire of annealing, proof copper-wire braided shielding braid density >=80%.
The utility model, dielectric isolation layer is extruded to cover by insulating material of polyethylene and forms, and dielectric isolation layer thickness is 0.8～1.0mm.
The utility model, copper strip shielding is overlapping wrapped composition of 0.05～0.10mm soft copper band by a thickness, longitudinally places a cross section>=0.2mm below copper strip shielding
2annealed copper wire is as drainage thread, wrapped one deck non-hygroscopic low smoke halogen-free band after copper strip shielding.
The utility model, separation sleeve is extruded to cover by thermoplastic halogen-free and low-smoke protective cover material and forms, and separation sleeve thickness is 1.0～1.2mm.
The utility model, steel-tape armouring adopt two japannings or galvanized steel strip sinistral coiling shape gap wrapped, the centre of outer steel band above internal layer steel band gap, 50% of steel band gap≤width of steel band, steel-tape armouring thickness 0.2～0.5mm.
The utility model, oversheath is extruded to cover by thermoplastic halogen-free and low-smoke protective cover material and forms, and oversheath thickness is 1.5～2.5mm.
The utility model, has the following advantages:
1), there is good shielding properties: 450/750V and following crosslinked polyetylene insulated double shield armouring environmental-protection flame-retardant control cables due to the double shield special construction that adopts proof copper-wire braided shielding and copper strip shielding to combine, it shields rejection coefficient≤0.01.The shielding rejection coefficient of existing copper wire braid shielded control cables is about 0.07, copper strip shielding is controlled electric shielding rejection coefficient and is about 0.02, shielding rejection coefficient is the foundation of weighing cable shield performance, from correction data double shield control cables, than existing shielding control cables shielding properties, increases exponentially;
2), there is good environmental protection characteristic: the environmental protection characteristic of cable has low smoke, zero halogen performance, Halogen (low-corrosiveness) index that cable produces when burning is pH weighted value >=4.5, conductivity weighted value≤8 μ S/mm, minimum light transmittance >=70% of the smoke density producing.When fire occurs, smoke density that cable fire produces is low, and visibility is high, and pernicious gas burst size is little, is convenient to personnel and withdraws.The corrosivity of burning gases is little, has also avoided the infringement to people and instrument and equipment;
Traditional PVC electric wire can produce a large amount of smog containing toxic gases such as hydrogen halides, carbon monoxide, carbon dioxide when burning, and this not only affects carrying out smoothly of disaster relief work, and lives and properties are caused to " disaster for the second time ";
3), there is good flame-retarding characteristic: cable has and stops or delay the ability that flame occurs or spreads, and the fire resistance of cable reaches the ZA generic request of GB/T19666 standard regulation, for rescue and personnel withdraw, obtains the quality time, the loss of reduction lives and properties;
4), there is higher operating temperature: crosslinked polyetylene insulated double shield armouring environmental-protection flame-retardant control cables long-time running temperature can reach 90 ℃, general control cable long-time running temperature can only reach 70 ℃, and cable can normally move in the higher place of temperature;
5), can bear certain mechanical external force: double shield control cables adopts double-deck steel-tape armouring, and cable can bear certain resistance to compression mechanical external force.
The utility model, have advantages of good environmental protection, fire-retardant, advantages of good shielding performance, safe, can bear certain mechanical external force.
Embodiment is further described the utility model by reference to the accompanying drawings below.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present utility model
In figure, 1, copper conductor; 2, insulating barrier; 3, filler; 4, twining package tape; 5, proof copper-wire braided shielding; 6, dielectric isolation layer; 7, copper strip shielding; 8, separation sleeve; 9, steel-tape armouring; 10, oversheath.
Embodiment
With reference to Fig. 1, the present embodiment is a kind of 450/750V and following crosslinked polyetylene insulated double shield steel-tape armouring environmental-protection flame-retardant control cables, the GB/T3956 standard that meets that copper conductor 1 is comprised of the soft circular copper wire of annealing is stipulated the 1st kind of circular solids conductor or the 2nd kind of circular stranded conductor, and conductor specification is 0.75～10mm
2, core number is 2～37 cores; Insulating barrier 2 is extruded and is formed by organosilane crosslinked polyethylene insulation material, and its thickness is 0.6～0.7mm; Insulating barrier 2 can adopt color or numeral to identify, general five cores and the identification of following employing color, and five cores adopt numeral identification above, and recognition methods meets GB/T9330.1 standard-required; The copper conductor 1 that is extruded with insulating barrier 2 should be twisted into cable core, outermost layer direction of lay is dextrad, 20 times of twisting pitch≤conductor assembly outer diameter when insulating barrier 2 adopts numeral identification, are arranged by natural numerical order clockwise direction from low to high to skin by internal layer in stranded process; Filler 3 be non-hygroscopic and applicable cable operating temperature and with insulating barrier 2 compatible low smoke and zero halogen material mutually, when cable core need not be filled, also can guarantee cable core rounding, cable core can be filled; Twining package tape 4 is by the not halogen-containing band of two-layer non-hygroscopic overlapping wrapped composition; Proof copper-wire braided shielding 5 is comprised of diameter 0.15～0.30mm soft circular copper wire of annealing, count>=80%; Dielectric isolation layer 6 is extruded and is formed by insulating material of polyethylene, and its thickness is 0.8～1.0mm; Copper strip shielding 7 is overlapping wrapped composition of 0.05～0.10mm soft copper band by a thickness, allows longitudinally to place a cross section>=0.2mm below copper strips
2annealed copper wire, as drainage thread, allows wrapped one deck non-hygroscopic low smoke halogen-free band after copper strip shielding; Separation sleeve 8 is extruded and is formed by thermoplastic halogen-free and low-smoke protective cover material, and its thickness is 1.0～1.2mm; Steel-tape armouring 9 adopt two japannings or galvanized steel strip sinistral coiling shape gap wrapped, the centre of outer steel band roughly above internal layer steel band gap, 50% of steel band gap≤width of steel band, thickness of strips 0.2～0.5mm; Oversheath 10 is extruded and is formed by thermoplastic halogen-free and low-smoke protective cover material, and its thickness is 1.5～2.5mm.
Manufacture method of the present utility model, comprises the following steps:
1), wire drawing: the wire drawing machine of selecting suitable continuous wire drawing annealing synchronously to carry out according to cable copper wire diameter size used, wire-drawing die is glomerocryst mould or nano coating mould, according to the given wire drawing lengthening coefficient of wire drawing machine Reasonable mould, rationally control wire drawing linear velocity, guarantee the copper cash flexibility after annealing, the annealed copper wire performance after annealing meets GB/T3953-2008 standard regulation;
2), conductor strand system: need to twist system when copper conductor adopts the 2nd kind of circular stranded conductor of GB/T3956 standard regulation, general conductor strand is to be left-hand, maximum D.C. resistance≤GB/T3956-2008 standard gauge definite value during 20 ℃ of copper conductors;
3), insulating barrier extrudes: select suitable extrusion apparatus, extruded mould is generally selected crowded tubular type, adopt organosilane crosslinked polyethylene insulation material to be extruded in equably on copper conductor, plastic extruding machine temperature is controlled at 170～215 ℃, extruding thickness is 0.6～0.7mm, and insulating barrier selects color or numeral to identify according to copper conductor core number, general five cores and the identification of following employing color, five cores adopt numeral identification above, and recognition methods meets GB/T9330.1 standard-required.After insulation extrusion, should carry out steam or poach crosslinked, crosslinked poly-second heat extends≤175%;
4), stranded, the filling, wrapped of cable core: cable core is stranded, filling, wrapped be a procedure, a general stranding wire twisting equipment can complete simultaneously; (1) copper conductor that, is extruded with insulating barrier is twisted into cable core, outermost layer direction of lay is dextrad, 20 times of twisting pitch≤conductor assembly outer diameter when insulating barrier adopts numeral identification, are arranged by natural numerical order clockwise direction since 1 to skin by internal layer in stranded process; (2), cable core gap adopt non-hygroscopic and applicable cable operating temperature and with insulating barrier mutually compatible low smoke and zero halogen material fill, guarantee cable core rounding, when cable core need not be filled, also can guarantee cable core rounding, cable core can be filled; (3), the overlapping wrapped composition of the not halogen-containing band of the two-layer non-hygroscopic of wrapped employing, general lapping direction is left-hand;
5), proof copper-wire braided shielding: determine the soft circular copper wire diameter of annealing and radical, select suitable braiding apparatus, braiding process control lay of braiding, guarantees count >=80%;
6), dielectric isolation layer extrudes: select suitable extrusion apparatus, extruded mould is selected crowded tubular type, adopts insulating material of polyethylene to be extruded in equably proof copper-wire braided shielding upper, and plastic extruding machine temperature is controlled at 170～215 ℃, and extruding thickness is 0.8～1.0mm;
7), copper strip shielding: select suitable copper strips lapping equipment, determine soft copper tape thickness and drainage thread diameter, soft copper band is overlapping wrapped on dielectric isolation layer, and general lapping direction is left-hand, can longitudinally place a cross section>=0.2mm below copper strips
2annealed copper wire is as drainage thread, also can wrapped one deck non-hygroscopic low smoke halogen-free band after copper strip shielding;
8), separation sleeve extrudes: select suitable extrusion apparatus, extruded mould is selected crowded tubular type, adopts thermoplastic halogen-free and low-smoke protective cover material to be extruded in equably on copper strip shielding, and plastic extruding machine temperature is controlled at 105～150 ℃, and extruding thickness is 1.0～1.2mm;
9), steel-tape armouring: select suitable steel-tape armouring equipment, determine after thickness of strips, adopt two japannings or galvanized steel strip sinistral coiling shape gap wrapped on separation sleeve, the centre of outer steel band roughly above internal layer steel band gap, 50% of steel band gap≤width of steel band;
10), oversheath extrudes: select suitable extrusion apparatus, extruded mould is selected crowded tubular type, adopts thermoplastic halogen-free and low-smoke protective cover material to be extruded in equably on steel-tape armouring, and plastic extruding machine temperature is controlled at 105～150 ℃, and extruding thickness is 1.5～2.5mm.
With four-core, specification 4mm
2for example, copper conductor adopts solid conductor, and the soft circular copper wire diameter of annealing is 2.25mm, and proof copper-wire braided shielding is 0.15mm with the soft circular copper wire diameter of annealing, and drainage thread is 1.0mm with the soft circular copper wire diameter of annealing.
1), diameter is that anneal soft circular copper wire of 2.25mm draws, adopt inlet wire φ 8.0mm oxygen-free copper bar to draw on the large wire drawing machine of 13 mould continuous wire drawing annealed copper, mould adopts glomerocryst mould, totally 10 passages, wire drawing lengthening coefficient is controlled between 1.25～1.35, wire drawing linear velocity is controlled at below 12m/s, and solid conductor performance meets GB/T3956 standard regulation; The copper wire that drawing wire diameter is 0.15mm, adopt inlet wire φ 1.0mm copper single line to draw on 24 mould continuous wire drawing annealing small wire drawing machines, mould adopts glomerocryst mould altogether, totally 24 passages, wire drawing lengthening coefficient is controlled between 1.15～1.18, wire drawing linear velocity is controlled at below 18m/s, and annealed copper linearity can meet GB/T3953 standard regulation;
2), insulating barrier extrudes, extrusion apparatus adopts SJ-70 type plastic extruding machine, mould is for squeezing tubular type, and core rod aperture is 3.5mm, and die sleeve aperture is 5.0mm, Insulation Material is selected organosilane crosslinked polyethylene insulation material, plastic extruding machine temperature is controlled at 170～215 ℃, and extruded velocity≤100m/min extrudes THICKNESS CONTROL at 0.60～0.65mm, insulating barrier external diameter is controlled at 3.4～3.6mm, insulating barrier employing Huang/green, light blue, black and brown identification.After insulation extrusion, carry out vapor crosslinking, two ends seals and prevents that moisture from entering conductor, temperature >=90 ℃, and insulation is no less than 4 hours, guarantees crosslinked poly-second heat extension≤175%;
3), stranded, the filling, wrapped of cable core, select cage stranding stranding machine that the copper conductor that is extruded with insulating barrier is twisted into cable core, outermost layer direction of lay is dextrad, 20 times of twisting pitch≤conductor assembly outer diameter.Cable core gap adopts dustless mineral wool rope to fill, and guarantees cable core rounding.It is that 0.04mm, width are 25mm polyester belt is overlapping wrapped that cable core adopts two layers of thickness, and lapping direction is left-hand;
4), proof copper-wire braided shielding, the soft circular copper wire diameter 0.15mm that anneals, totally 192 radicals, select 24 ingot braiding machines, 8 soft circular copper wires of annealing of every ingot, lay of braiding is controlled at 60～65mm, guarantees count >=80%;
5), dielectric isolation layer extrudes, extrusion apparatus adopts SJ-90 type plastic extruding machine, extruded mould is selected crowded tubular type, core rod aperture is 11.0mm, and die sleeve aperture is 15.5mm, adopts insulating material of polyethylene to be extruded in equably in proof copper-wire braided shielding, plastic extruding machine temperature is controlled at 170～215 ℃, extruded velocity≤70m/min, extrudes THICKNESS CONTROL at 0.80～0.9mm, and dielectric isolation layer external diameter is controlled at 10.9～11.1mm;
6), copper strip shielding, select copper strip shielding machine, adopt thickness 0.05mm soft copper band overlapping wrapped on dielectric isolation layer, lapping direction is left-hand;
7), separation sleeve extrudes, extrusion apparatus adopts SJ-90 type plastic extruding machine, extruded mould is selected crowded tubular type, core rod aperture is 13.5mm, and die sleeve aperture is 18.0mm, adopts thermoplastic halogen-free and low-smoke protective cover material to be extruded in equably on copper strip shielding, plastic extruding machine temperature is controlled at 105～150 ℃, extruded velocity≤40m/min, extrudes THICKNESS CONTROL at 1.0～1.1mm, and separation sleeve external diameter is controlled at 13.3～13.5mm;
8), steel-tape armouring, select tape armouring machine, adopt the galvanized steel strip sinistral coiling shape gap of thickness 0.2mm wrapped on separation sleeve, the centre of outer steel band roughly above internal layer steel band gap, 50% of steel band gap≤width of steel band;
9), oversheath extrudes, extrusion apparatus adopts SJ-90 type plastic extruding machine, extruded mould is selected crowded tubular type, core rod aperture is 17.0mm, and die sleeve aperture is 23.0mm, adopts thermoplastic halogen-free and low-smoke protective cover material to be extruded in equably on steel-tape armouring layer, plastic extruding machine temperature is controlled at 105～150 ℃, extruded velocity≤25m/min, extrudes THICKNESS CONTROL at 1.5～1.6mm, and oversheath external diameter is controlled at 17.2～17.4mm.
Claims (13)
1. a 450/750V and following crosslinked polyetylene insulated double shield steel-tape armouring environmental-protection flame-retardant control cables, there is multicore copper conductor, it is characterized in that: the copper conductor of described multicore copper conductor (1) extrudes equably separately and is covered with insulating barrier (2), the described copper conductor that is covered with insulating barrier that extrudes is twisted into cable core, cable core periphery is surrounded with twining package tape (4), described twining package tape periphery is provided with proof copper-wire braided shielding (5), described proof copper-wire braided shielding extrudes and is covered with dielectric isolation layer (6), described dielectric isolation layer periphery is surrounded with copper strip shielding (7), described copper strip shielding extrudes and is covered with separation sleeve (8), described separation sleeve periphery is provided with steel-tape armouring (9), on described steel-tape armouring, extrude and be covered with oversheath (10).
2. flame-proof control cable according to claim 1, is characterized in that: described copper conductor (1) forms circular solids conductor or circular stranded conductor by the soft circular copper wire of annealing, and copper conductor cross section specification is 0.75～10mm
2, core number is 2～37 cores.
3. flame-proof control cable according to claim 2, is characterized in that: described insulating barrier (2) is extruded and formed by organosilane crosslinked polyethylene insulation material, and thickness of insulating layer is 0.6～0.7mm.
4. according to the flame-proof control cable described in claim 1,2 or 3, it is characterized in that: described in to extrude the outermost layer direction of lay that is covered with the cable core that the copper conductor of insulating barrier is twisted into be dextrad, 20 times of twisting pitch≤conductor assembly outer diameter, in stranded process, when insulating barrier adopts numeral identification, by internal layer, to skin, by natural numerical order clockwise direction, arranged from low to high.
5. flame-proof control cable according to claim 4, is characterized in that: described in extrude and be covered with the cable core gap-fill that the copper conductor of insulating barrier is twisted into and have filler (3).
6. flame-proof control cable according to claim 5, is characterized in that: described filler (3) for non-hygroscopic and applicable cable operating temperature and with insulating barrier compatible low smoke and zero halogen material mutually.
7. flame-proof control cable according to claim 6, is characterized in that: described twining package tape (4) is by the not halogen-containing band of two-layer non-hygroscopic overlapping wrapped composition.
8. flame-proof control cable according to claim 7, is characterized in that: described proof copper-wire braided shielding (5) is comprised of diameter 0.15～0.30mm soft circular copper wire of annealing, proof copper-wire braided shielding braid density >=80%.
9. flame-proof control cable according to claim 8, is characterized in that: described dielectric isolation layer (6) is extruded to cover by insulating material of polyethylene and forms, and dielectric isolation layer thickness is 0.8～1.0mm.
10. flame-proof control cable according to claim 9, is characterized in that: described copper strip shielding (7) is overlapping wrapped composition of 0.05～0.10mm soft copper band by a thickness, longitudinally places a cross section>=0.2mm below copper strip shielding
2annealed copper wire is as drainage thread, wrapped one deck non-hygroscopic low smoke halogen-free band after copper strip shielding.
11. flame-proof control cables according to claim 10, is characterized in that: described separation sleeve (8) is extruded to cover by thermoplastic halogen-free and low-smoke protective cover material and forms, and separation sleeve thickness is 1.0～1.2mm.
12. flame-proof control cables according to claim 11, it is characterized in that: two japannings of described steel-tape armouring (9) employing or galvanized steel strip sinistral coiling shape gap are wrapped, the centre of outer steel band is above internal layer steel band gap, 50% of steel band gap≤width of steel band, steel-tape armouring thickness 0.2～0.5mm.
13. flame-proof control cables according to claim 12, is characterized in that: described oversheath (10) is extruded to cover by thermoplastic halogen-free and low-smoke protective cover material and forms, and oversheath thickness is 1.5～2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687781.7U CN203536026U (en) | 2013-11-03 | 2013-11-03 | Crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320687781.7U CN203536026U (en) | 2013-11-03 | 2013-11-03 | Crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage |
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| CN203536026U true CN203536026U (en) | 2014-04-09 |
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| CN201320687781.7U Expired - Fee Related CN203536026U (en) | 2013-11-03 | 2013-11-03 | Crosslinked polyethylene insulated double-shielding steel band armored environment-friendly flame-retardant control cable for voltage of 450/750V and lower voltage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376911A (en) * | 2014-11-25 | 2015-02-25 | 无锡市恒汇电缆有限公司 | Weather-proof high-conductivity composite structure power cable and manufacturing method thereof |
| CN108062994A (en) * | 2017-12-15 | 2018-05-22 | 江苏恒辉电气有限公司 | A kind of digital quantity input and output cable |
| CN114822934A (en) * | 2022-03-25 | 2022-07-29 | 四川鸿鑫国泰电缆有限责任公司 | Polyvinyl chloride insulation copper strip shielding steel strip armored control cable and preparation method thereof |
-
2013
- 2013-11-03 CN CN201320687781.7U patent/CN203536026U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104376911A (en) * | 2014-11-25 | 2015-02-25 | 无锡市恒汇电缆有限公司 | Weather-proof high-conductivity composite structure power cable and manufacturing method thereof |
| CN108062994A (en) * | 2017-12-15 | 2018-05-22 | 江苏恒辉电气有限公司 | A kind of digital quantity input and output cable |
| CN114822934A (en) * | 2022-03-25 | 2022-07-29 | 四川鸿鑫国泰电缆有限责任公司 | Polyvinyl chloride insulation copper strip shielding steel strip armored control cable and preparation method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20191103 |