CN210110386U - Waterproof and fireproof cable - Google Patents
Waterproof and fireproof cable Download PDFInfo
- Publication number
- CN210110386U CN210110386U CN201921274373.2U CN201921274373U CN210110386U CN 210110386 U CN210110386 U CN 210110386U CN 201921274373 U CN201921274373 U CN 201921274373U CN 210110386 U CN210110386 U CN 210110386U
- Authority
- CN
- China
- Prior art keywords
- layer
- waterproof
- shielding layer
- fireproof
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The utility model discloses a waterproof and fireproof cable, which comprises a conductor, a conductor shielding layer, an insulating layer, a shielding layer, a metal shielding layer, a waterproof layer, a fireproof layer, an armor layer and a sheath which are arranged from inside to outside in sequence; the waterproof layer comprises a semiconductive water-blocking belting layer, an aluminum-plastic composite belting layer and a high-density polyethylene layer; the semiconductive water-blocking belting layer is wrapped outside the metal shielding layer, the aluminum-plastic composite belting layer is longitudinally wrapped outside the semiconductive water-blocking belting layer, and the high-density polyethylene layer is extruded and molded outside the aluminum-plastic composite belting layer and is fixedly connected with the aluminum-plastic composite belting layer into a whole; the fire-proof layer comprises a halogen-free low-smoke high-flame-retardant polyolefin fire-proof layer. By providing a waterproof layer and a fireproof layer, both waterproof and fireproof properties can be achieved.
Description
Technical Field
The utility model relates to a cable, especially a waterproof fireproof cable.
Background
The rapid development of the power related industry has led to a great increase in the demand of communication cables, which have been gradually applied in various environments, such as water environment, high temperature environment, high humidity environment, high pressure environment and other special environments; however, there are a number of difficulties to be overcome in the development of cables for use in more specific applications.
For example, when the cable needs to work in an environment with water and fire, a common waterproof or fireproof cable is insufficient; or in the working environment of the cable, when fire exists or water exists, the cable capable of resisting flame and resisting water is needed;
for the above reasons, the present inventors have conducted intensive studies on existing cables in order to design a waterproof and fireproof cable capable of solving the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems, the inventor of the present invention has made a keen study to design a waterproof and fireproof cable, which includes a conductor, a conductor shielding layer, an insulating layer, a shielding layer, a metal shielding layer, a waterproof layer, a fireproof layer, an armor layer and a sheath, which are sequentially arranged from inside to outside; the waterproof layer comprises a semiconductive water-blocking belting layer, an aluminum-plastic composite belting layer and a high-density polyethylene layer; the semiconductive water-blocking belting layer is wrapped outside the metal shielding layer, the aluminum-plastic composite belting layer is longitudinally wrapped outside the semiconductive water-blocking belting layer, and the high-density polyethylene layer is extruded and molded outside the aluminum-plastic composite belting layer and is fixedly connected with the aluminum-plastic composite belting layer into a whole; the fire-proof layer comprises a halogen-free low-smoke high-flame-retardant polyolefin fire-proof layer. Through being equipped with waterproof layer and flame retardant coating, consequently can have waterproof and fire-proof characteristic simultaneously, thereby accomplish the utility model discloses.
Particularly, the utility model aims at providing a waterproof fireproof cable, this cable includes conductor 1, conductor shielding layer 2, insulating layer 3, shielding layer 4, metallic shield 5, waterproof layer 6, flame retardant coating 7, armor 8 and sheath 9 that arrange from inside to outside in proper order;
wherein, the waterproof layer 6 comprises a semiconductive waterproof belting layer 61, an aluminum-plastic composite belting layer 62 and a high-density polyethylene layer 63;
wherein, the semi-conductive water-blocking wrapping tape layer 61 is wrapped outside the metal shielding layer 5;
the aluminum-plastic composite belt layer 62 longitudinally wraps the outer part of the semi-conductive water-blocking belting layer 61;
the high-density polyethylene layer 63 is extruded outside the aluminum-plastic composite belt layer 62 and is fixedly connected with the aluminum-plastic composite belt layer 62 into a whole.
The tape material used for forming the conductor shield layer 2 is a semi-conductive tape.
Wherein the width of the strip material used for the conductor shielding layer 2 is 15-30 mm, the thickness is 0.10-0.20 mm, and the density is 1.11-1.15 g/cm3The capping rate is 20-30%.
Wherein, the insulating layer 3 is an ultra-clean crosslinked polyethylene layer;
the thickness of the insulating layer 3 is 0.8-2.8 mm.
The shielding layer 4 is a semiconductive shielding layer, and is extruded between the insulating layer 3 and the metal shielding layer 5.
Wherein the metal shielding layer 5 comprises a net structure woven by copper wires,
the diameter of the copper wire is 0.12-0.15 mm, the weaving density of the net-shaped structure is more than 90%, and the thickness of the metal shielding layer 5 is 0.48-0.60 mm.
Wherein, the fire-proof layer 7 comprises a halogen-free low-smoke high-fire-retardant polyolefin fire-proof layer.
The armor layer 8 comprises a non-magnetic stainless steel band wrapped on the outer side of the fireproof layer 7.
The utility model discloses the beneficial effect who has includes:
(1) according to the utility model, the waterproof and fireproof cable is provided with the waterproof layer and the fireproof layer, so that the waterproof and fireproof cable has the characteristics of both waterproof and fireproof;
(2) according to the utility model, the armor layer of the waterproof and fireproof cable adopts the non-magnetic stainless steel band, thereby reducing the eddy current loss and greatly increasing the current-carrying capacity;
(3) according to the utility model, the sheath of the waterproof and fireproof cable is made of the ratproof and termite-proof material, so that the cable has the ratproof and termite-proof characteristics;
(4) according to the utility model provides a waterproof fireproof cable all adopts the low cigarette material of nothing halogen, so the cable has the environmental protection characteristic.
Drawings
Fig. 1 is a schematic view illustrating an overall structure of a waterproof and fireproof cable according to a preferred embodiment of the present invention;
fig. 2 is a schematic view illustrating a structure of a waterproof layer in a waterproof and fireproof cable according to a preferred embodiment of the present invention.
The reference numbers illustrate:
1-conductor
2-conductor shielding layer
3-insulating layer
4-shielding layer
5-metal shielding layer
6-Water-proof layer
61-semiconductive water-blocking belting layer
62-aluminium-plastic composite belt layer
63-high density polyethylene layer
7-fire-retardant layer
8-armor layer
9-protective sheath
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. The features and advantages of the present invention will become more apparent from the description.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
According to the utility model provides a waterproof fireproof cable, as shown in fig. 1 and fig. 2, the cable includes conductor 1, conductor shielding layer 2, insulating layer 3, shielding layer 4, metallic shield 5, waterproof layer 6, flame retardant coating 7, armor 8 and sheath 9 that arrange from inside to outside in proper order; the cross section of the conductor 1 is circular, and the cross sections of other parts are circular;
wherein, the waterproof layer 6 comprises a semiconductive waterproof belting layer 61, an aluminum-plastic composite belting layer 62 and a high-density polyethylene layer 63;
the semi-conductive water-blocking tape layer 61 is formed by wrapping a semi-conductive water-blocking tape outside the metal shielding layer 5, the thickness of the semi-conductive water-blocking tape is 0.3mm, the width of the semi-conductive water-blocking tape is 10-40mm, preferably 25mm, and the wrapping probability is 20% -30%, preferably 25%;
the aluminum-plastic composite belt layer 62 longitudinally wraps the outer part of the semi-conductive water-blocking belting layer 61; the aluminum-plastic composite belt is composed of an aluminum belt single-side or double-side composite ethylene-acrylic acid copolymer (EAA), the copolymer and an aluminum belt base belt have good bonding performance, and can form firm bonding with low-density, linear low-density, medium-density and high-density polyethylene and halogen-free polyolefin (HFPO) sheath resin.
The high-density polyethylene layer 63 is extruded and molded outside the aluminum-plastic composite belt layer 62 and fixedly connected with the aluminum-plastic composite belt layer 62 into a whole, the high-density polyethylene layer 63 is obtained by solidifying and molding high-density polyethylene in a molten state, the high-density polyethylene in the molten state is extruded onto the aluminum-plastic composite belt layer 62 through an extruder, and the high-density polyethylene layer 63 is formed after cooling and is gradually fixedly connected with the aluminum-plastic composite belt layer 62 into a whole in the solidifying process, so that a stable water-resisting layer is formed;
outside water is difficult to pass through high density polyethylene layer 63 and gets into inside expiring, still is provided with compound belting layer 62 of plastic-aluminum and semiconduction at high density polyethylene layer 63 inside moreover and blocks water belting layer 61, can further prevent outside water to get into, through the continuous waterproof water-blocking structure of above-mentioned multilayer, fully provides the waterproof performance of this cable.
In a preferred embodiment, the conductor is a smooth-surfaced round metal conductor, the diameter of the conductor is determined according to the processing requirement, preferably 2.2-3.12 mm, and the conductor is preferably made of compacted bare copper and has extremely high electric conductivity.
In another preferred embodiment, the conductor 1 is formed by twisting a plurality of copper wires, preferably by left-hand-bundle twisting of a plurality of copper wires.
Preferably, the diameter of the metal wire is 0.30-1.04 mm, preferably 0.40-0.85 mm, the total diameter of the conductor 1 is 2.2-3.12 mm, preferably 2.2-3.12 mm, in the utility model, the total diameter of the conductor core 1 refers to the diameter of the metal wire when the conductor 1 is a single metal wire; when the conductor 1 is a stranded conductor, the whole of the stranded conductor exhibits a diameter.
In a preferred embodiment, the tape used to wrap the conductor shield layer 2 is a semi-conductive tape; preferably a semiconducting nylon tape or a semiconducting teflon tape.
In the utility model, the width of the strip material used for winding and forming the conductor shielding layer 2 is 15-30 mm, preferably 10-25 mm; the inventor finds that when the width of the material used for the conductor shielding layer 2 is 10-25 mm, the material can meet the requirements of the covering rate and the wrapping angle, so that the appearance of the conductor shielding layer 2 is flat and free of wrinkles.
The utility model discloses in, form around the package the thickness of the used strip of conductor shielding layer 2 is 0.10 ~ 0.20mm, preferably 0.15mm, and the inventor discovers that thickness is smaller, and conductor shielding layer 2 can be tight more around the package, can enough play abundant shielding effect when thickness is 0.10 ~ 0.20mm, can make conductor shielding layer 2 tight degree height again.
The utility model discloses in, form around the package the density of the used strip of conductor shielding layer 2 is 1.11 ~ 1.15g/cm3Preferably 1.13g/cm3The inventor finds that the density of the material is 1.11-1.15 g/cm3The shielding effect is strong, and the production cost can be saved.
In the present invention, the covering rate of the conductor shielding layer 2 is 20% -30%, preferably 25%, and the inventor found that when the covering rate of the conductor shielding layer 2 is 20% -30%, it can make the electric field uniform, preventing the cable from being punctured.
In the present invention, the overlapping rate is a term commonly used in the art, and generally indicates the area ratio of the subsequent layer of winding material overlapping the previous layer of winding material.
In a preferred embodiment, the insulating layer 3 is an ultra-clean cross-linked polyethylene layer; the material is formed by extrusion molding of an ultra-clean crosslinked polyethylene insulating material;
the thickness of the insulating layer 3 is 0.8-2.8 mm, preferably 1.0-2.2 mm.
The utility model discloses in, the used material of insulating layer 3 is through cross-linking processing, makes the linear molecular structure of polyethylene change into three-dimensional netted molecular structure, has improved electric property, physical properties, mechanical properties and other special properties of the compound low tension cable product of photoelectricity greatly.
In a preferred embodiment, the shielding layer 4 is a semi-conductive shielding layer, and is wrapped between the insulating layer 3 and the metal shielding layer 5. The shielding layer 4 is also an insulating shielding layer, and is a thin layer with low resistivity, and the electric field distribution of the cable is improved through the shielding layer 4.
In a preferred embodiment, the metal shielding layer 5 is made of copper material, i.e. a copper shielding layer;
the copper shielding layer can be formed by wrapping a copper strip and can also be formed by wrapping and fixing the copper shielding layer on the shielding layer 4 through a net-shaped structure woven by copper wires.
When the metal shielding layer 5 comprises a net-shaped structure woven by copper wires, the diameter of the copper wires is 0.12-0.15 mm, preferably 0.15mm, the weaving density of the net-shaped structure is more than 90%,
the present invention is directed to a metal shield layer having a mesh-like plain weave structure, and the present inventors have found that the weaving is easy to be performed on a cable, and a shield layer having a weaving density of 90% or more can be obtained, and that the metal shield layer formed by the weaving has good flexibility.
In the present invention, the knitting density of the metal shielding layer 5 is 90% or more, preferably 95%, and the present inventors have found that the larger the knitting density is, the better the shielding effect is, and when the knitting density of the metal shielding layer 5 is 90% or more, both the good shielding effect and the good flexibility are obtained.
The utility model discloses in, the thickness of copper wire shielding layer 5 is about 4 times of used copper wire diameter, preferably 0.48 ~ 0.60mm, preferably 0.60 mm.
In a preferred embodiment, the fire-proof layer 7 comprises a halogen-free low-smoke high-fire-retardant polyolefin fire-proof layer, and the halogen-free low-smoke high-fire-retardant polyolefin fire-proof layer is a layered structure which is made of halogen-free low-smoke high-fire-retardant polyolefin and is coated outside the waterproof layer; the laminated structure is made of halogen-free low-smoke high-flame-retardant polyolefin, is non-flammable and flame-retardant, so that the laminated structure has a fireproof performance;
more preferably, a fire-resistant mica tape is further wound outside the halogen-free low-smoke high-flame-retardant polyolefin fireproof layer, the winding covering rate of the fire-resistant mica tape is greater than or equal to 50%, multiple layers of fire-resistant mica tapes are wound, so that the thickness of the fire-resistant insulating layer reaches a preset thickness value, and the fire-resistant mica tapes of each layer are wound in a staggered manner, namely the mica tape of the later layer is pressed on the winding gap of the former layer, so that the winding is tighter, and the whole fireproof layer 7 is more compact;
the total thickness of the wrapped fire-resistant mica tape needs to reach a preset thickness value, and the thickness value is related to the sectional area of the conductor, and specifically comprises the following steps: when the sectional area of the conductor is 1.5-4 mm2When the thickness of the fire-resistant mica tape is 0.55-0.65 mm; when the sectional area of the conductor is 10-150 mm2When the thickness of the fire-resistant mica tape is 0.82-0.98 mm; when the cross-sectional area of the conductor is 185-300 mm2When the thickness of the fire-resistant mica tape is 1.1-1.3 mm; when the sectional area of the conductor is 400-630 mm2In the process, the total thickness of the fire-resistant mica tape is 1.4-1.6 mm.
In a preferred embodiment, the fire-resistant mica tapes are mainly made of synthetic fluorophlogopite, the content of mica in the synthetic fluorophlogopite is more than 60%, and the thickness of each fire-resistant mica tape is 0.13-0.17 mm.
In a preferred embodiment, the armor layer 8 comprises a non-magnetic stainless steel band wrapped around the outside of the fire-blocking layer 7. By preparing the armor layer by using the non-magnetic stainless steel strip, the eddy current loss of the cable is reduced, so that the current-carrying capacity of the cable is increased;
the non-magnetic stainless steel strip gap is wrapped on the outer side of the fireproof layer 7, wherein the steel strip gap is not larger than 50% of the width of the steel strip.
Preferably, the armor layer comprises a first armor sub-layer and a second armor sub-layer, wherein a first layer of armor tape is wrapped outside the fire-proof layer 7 to form a first armor sub-layer, and a second layer of armor tape is wrapped outside the first armor sub-layer to form a second armor sub-layer.
The utility model discloses in, the used nonmagnetic stainless steel strip thickness of first armor sublayer is 0.1 ~ 0.8mm, preferably 0.2 ~ 0.5mm, and the inventor finds that, when the used nonmagnetic stainless steel strip thickness of first armor sublayer is 0.1 ~ 0.8mm, it has sufficient armor intensity, has good pliability simultaneously.
The utility model discloses in, first armor sublayer is used non-magnetic stainless steel strip width is 20 ~ 60mm, preferably 25 ~ 45mm, and the present inventors found that, when non-magnetic stainless steel strip width is 20 ~ 60mm, preferably 25 ~ 45mm, first armor sublayer is level and smooth, does not have the fold.
In the present invention, the covering rate of the first armor sublayer is 45% to 55%, preferably 50%, and the inventors found that when the covering rate of the first armor sublayer is 45% to 55%, the obtained cable has good strength.
The utility model discloses in, the used nonmagnetic stainless steel strip thickness of second armor sublayer is 0.2 ~ 0.8mm, preferably 0.2 ~ 0.5mm, and the inventor finds that, when the used nonmagnetic stainless steel strip thickness of second armor sublayer is 0.2 ~ 0.8mm, it has sufficient armor intensity, has good pliability simultaneously.
The utility model discloses in, the second armor sublayer is used the stainless steel strip width of non-magnetism nature is 30 ~ 70mm, preferably 40 ~ 50mm, and the present inventor finds that, when the stainless steel strip width of non-magnetism nature is 30 ~ 70mm, preferably 40 ~ 50m, the second armor sublayer is level and smooth, does not have the fold.
In the present invention, the covering rate of the second armor sublayer is 55% to 65%, preferably 60%, and the inventors found that when the covering rate of the second armor sublayer is 55% to 65%, the obtained cable has good strength.
In a preferred embodiment of the invention, the non-magnetic stainless steel strip of the first armor sub-layer is the same as the non-magnetic stainless steel strip of the second armor sub-layer.
In the present invention, the first armor sub-layer and the second armor sub-layer are wound in the same direction, preferably, both left directions.
In a preferred embodiment, the sheath 9 is made of a rat and termite resistant halogen-free low-smoke high-flame-retardant polyolefin material, so that the rat and termite resistant cable has rat and termite resistant properties, and further the waterproof and fireproof cable has natural environment resistant capability;
preferably, the thickness of the sheath 9 is 1.5-2.0 mm, preferably 1.8-1.9 mm, the inventor finds that the larger the thickness of the outer sheath 9 is, the stronger the protection effect on the inside of the cable, such as scratch prevention, etc., the thinner the thickness of the outer sheath 9 is, the better the flexibility of the cable is, and when the thickness of the outer sheath 9 is 1.5-2.0 mm, the enough protection effect can be achieved and the flexibility requirement of the cable can be met.
The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.
Claims (8)
1. A waterproof and fireproof cable is characterized by comprising a conductor (1), a conductor shielding layer (2), an insulating layer (3), a shielding layer (4), a metal shielding layer (5), a waterproof layer (6), a fireproof layer (7), an armor layer (8) and a sheath (9) which are sequentially arranged from inside to outside;
the waterproof layer (6) comprises a semi-conductive waterproof belting layer (61), an aluminum-plastic composite belting layer (62) and a high-density polyethylene layer (63);
wherein the semi-conductive water-blocking wrapping tape layer (61) wraps the outer part of the metal shielding layer (5);
the aluminum-plastic composite belt layer (62) is longitudinally wrapped outside the semi-conductive water-blocking belting layer (61);
the high-density polyethylene layer (63) is extruded and formed outside the aluminum-plastic composite belt layer (62) and is fixedly connected with the aluminum-plastic composite belt layer (62) into a whole.
2. The waterproof and fireproof cable of claim 1,
the strip material for forming the conductor shielding layer (2) in a wrapping mode is a semi-conductive strip.
3. The waterproof and fireproof cable of claim 2,
the width of the strip used by the conductor shielding layer (2) is 15-30 mm, the thickness is 0.10-0.20 mm, and the density is 1.11-1.15 g/cm3The capping rate is 20-30%.
4. The waterproof and fireproof cable of claim 1,
the insulating layer (3) is an ultra-clean crosslinked polyethylene layer;
the thickness of the insulating layer (3) is 0.8-2.8 mm.
5. The waterproof and fireproof cable of claim 1,
the shielding layer (4) is a semi-conductive shielding layer and is extruded between the insulating layer (3) and the metal shielding layer (5).
6. The waterproof and fireproof cable of claim 1,
the metal shielding layer (5) comprises a net structure woven by copper wires,
the diameter of the copper wire is 0.12-0.15 mm, the weaving density of the net-shaped structure is more than 90%, and the thickness of the metal shielding layer (5) is 0.48-0.60 mm.
7. The waterproof and fireproof cable of claim 1,
the fire-proof layer (7) comprises a halogen-free low-smoke high-fire-retardant polyolefin fire-proof layer.
8. The waterproof and fireproof cable of claim 1,
the armor layer (8) comprises a non-magnetic stainless steel band wrapped on the outer side of the fireproof layer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274373.2U CN210110386U (en) | 2019-08-07 | 2019-08-07 | Waterproof and fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274373.2U CN210110386U (en) | 2019-08-07 | 2019-08-07 | Waterproof and fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210110386U true CN210110386U (en) | 2020-02-21 |
Family
ID=69567566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921274373.2U Active CN210110386U (en) | 2019-08-07 | 2019-08-07 | Waterproof and fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210110386U (en) |
-
2019
- 2019-08-07 CN CN201921274373.2U patent/CN210110386U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10847286B2 (en) | Metal sheathed cable with jacketed, cabled conductor subassembly | |
| KR100709559B1 (en) | High performance data cable | |
| US10249410B1 (en) | Power over ethernet twisted pair communication cables | |
| KR100671184B1 (en) | High performance data cable and a UL 910 plenum non-fluorinated jacket high performance data cable | |
| US10388434B1 (en) | Twisted pair communication cables having separators formed from a combination of foamed and unfoamed materials | |
| US9922753B1 (en) | Communication cables with separators having bristles | |
| JP6756140B2 (en) | LAN cable | |
| US10276280B1 (en) | Power over ethernet twisted pair communications cables with a shield used as a return conductor | |
| CN109300587A (en) | A kind of waterproofing type electric railway mould proof termite-resistant rodent-resistant cable and preparation method thereof | |
| CN210110386U (en) | Waterproof and fireproof cable | |
| EP3043357B1 (en) | Metal sheathed cable with jacketed, cabled conductor subassembly | |
| US10867724B1 (en) | Method for forming power over ethernet twisted pair communication cables | |
| RU180122U1 (en) | CABLE FOR RAILWAY SYSTEMS AND LOCKING | |
| JPH0561726B2 (en) | ||
| US9972422B1 (en) | Communication cables with separators formed from discrete components of insulation material | |
| CN115346713A (en) | Marine light fire-resistant flexible data transmission shielding cable and preparation method thereof | |
| RU2338279C2 (en) | Electric communication cable | |
| TWM619183U (en) | Cable | |
| CN112331395A (en) | Motor lead cable and preparation method and application thereof | |
| RU57508U1 (en) | ELECTRIC COMMUNICATION CABLE (OPTIONS) | |
| CN218069402U (en) | Anti-interference twisted-pair for high-frequency transmission | |
| CN211455364U (en) | Silicon rubber insulation instrument cable | |
| RU2690160C1 (en) | Symmetric data transmission cable | |
| CN213877611U (en) | Bending-resistant light electrophone combined cable | |
| CN203325487U (en) | High-definition multimedia data cable having shielding function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |