CN112992417A - Overhead insulated cable - Google Patents
Overhead insulated cable Download PDFInfo
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- CN112992417A CN112992417A CN201911297240.1A CN201911297240A CN112992417A CN 112992417 A CN112992417 A CN 112992417A CN 201911297240 A CN201911297240 A CN 201911297240A CN 112992417 A CN112992417 A CN 112992417A
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- insulated cable
- overhead insulated
- fixed surface
- layer
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- 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
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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
- H01B7/02—Disposition of insulation
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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
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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
- H01B7/22—Metal wires or tapes, e.g. made of steel
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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
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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
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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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
- H01B7/368—Insulated conductors or cables characterised by their form with distinguishing or length marks being a sleeve, ferrule, tag, clip, label or short length strip
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- Insulated Conductors (AREA)
Abstract
The utility model provides an overhead insulated cable, the fixed surface of conductive core (1) has cup jointed insulating material layer (6), the fixed surface of insulating material layer (6) is connected with flame retardant coating (5), the fixed surface of flame retardant coating (5) is connected with insulating layer (4), the fixed surface of insulating layer (4) has cup jointed support protecting net (7), the fixed surface of support protecting net (7) is connected with protective layer (2), the fixed surface of protective layer (2) has cup jointed outside protecting film (8), the fixed surface of protective layer (2) is connected with indicator label (9). The supporting protection net is matched with the supporting wire, so that the firmness of the overhead insulated cable is improved, the problem of cable breakage is avoided, the fireproof layer is made of magnesium oxide as an insulating material layer, the overhead insulated cable has good fireproof performance, and the stability of the overhead insulated cable is improved. The utility model provides an instruction label has improved this built on stilts insulated cable's practicality.
Description
Technical Field
The invention relates to the technical field of insulated cables, in particular to an overhead insulated cable.
Background
The overhead cable (called overhead insulated cable) is an overhead conductor with insulating layer and protective sheath, and is a special cable made up by adopting the similar production process of cross-linked cable, and is a new power transmission mode between overhead conductor and underground cable. The aerial cable is a single core, and can be divided into a duralumin wire structure, an aluminum alloy wire structure, a steel core or aluminum alloy core supporting structure, a self-supporting three-core threaded structure (the wire core can be duralumin or duralumin wire) and the like according to different structures. The overhead cable has wide transmission application at home and abroad.
Because aerial insulated cable uses in the high altitude, and the external strength who receives is great, consequently the cracked condition of aerial insulated cable often can appear and take place, and traditional aerial insulated cable is when receiving naked light to damage simultaneously, and cracked condition can appear in the cable, and fire behavior is relatively poor, and traditional aerial insulated cable is difficult for discerning basic information, causes the trouble to the inspection work, therefore this technique is sent out the bag and is proposed an aerial insulated cable.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides an overhead insulated cable.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an overhead insulated cable, including conductive core 1, conductive core 1's fixed surface has cup jointed insulating material layer 6, insulating material layer 6's fixed surface is connected with flame retardant coating 5, flame retardant coating 5's fixed surface is connected with insulating layer 4, insulating layer 4's fixed surface has cup jointed supporting protection net 7, supporting protection net 7's fixed surface is connected with protective layer 2, protective layer 2's fixed surface has cup jointed outside protecting film 8, protective layer 2's fixed surface is connected with and indicates label 9.
The invention also has the following additional technical features:
the technical scheme of the invention is further specifically optimized as follows: the conductive wire core 1 comprises a thick conductive wire core 101 positioned at the center and thin conductive wire cores 102 arrayed with the thick conductive wire core 101 as the center, wherein the number of the thick conductive wire cores 101 is 1, and the number of the thin conductive wire cores 102 is 6.
The technical scheme of the invention is further specifically optimized as follows: the conductive wire core 1 adopts a TY type round copper wire.
The technical scheme of the invention is further specifically optimized as follows: the material of the protective layer 2 is weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein the weight ratio of the components is 80-100 parts of weather-resistant polyethylene, 60-80 parts of polyethylene, 75-95 parts of cross-linked polyethylene, 1-5 parts of phenol antioxidant, 1-3 parts of phosphite antioxidant, 1-3 parts of cross-linking agent and 0-20 parts of filling agent.
The technical scheme of the invention is further specifically optimized as follows: the supporting lead 3 is fixedly sleeved inside the insulating material layer 6; the number of the supporting wires 3 is 6, and the supporting wires are respectively arranged in the middle of two adjacent thin conductive wire cores 102.
The technical scheme of the invention is further specifically optimized as follows: the fireproof layer 5 is made of a magnesium oxide insulating material layer.
The technical scheme of the invention is further specifically optimized as follows: the supporting and protecting net 7 is a steel wire net structure.
The technical scheme of the invention is further specifically optimized as follows: the indication labels 9 are linearly arranged on the surface of the protective layer 2, and the upper surfaces of the indication labels 9 are parallel to the surface of the protective layer 2; the distance between two adjacent indicator tags 9 is 500 m.
The technical scheme of the invention is further specifically optimized as follows: the voltage class of the overhead insulated cable is 10 KV.
Compared with the prior art, the invention has the advantages that:
the method has the advantages that: this aerial insulated cable, use through the cooperation that supports guard net and supporting wire, when this aerial insulated cable installs, utilize the pulling force effect that supports guard net and supporting wire to support the cable, and then improved this aerial insulated cable's fastness, avoid the cracked problem of cable to appear, utilize the flame retardant coating to form as insulating material layer manufacturing for magnesium oxide simultaneously, neither burn because of the particularity of its material, also prolong to burn, and then make this aerial insulated cable possess good fire behavior, this aerial insulated cable's stability has been improved.
The method has the advantages that: the tensile strength of the overhead insulated cable is at least 3 times higher than that of the traditional steel-cored aluminum strand, but the weight of the core material of the overhead insulated cable is only 1/3 of the traditional steel core, so that the total weight of the overhead insulated cable is greatly reduced, and the volume of the overhead insulated cable is also reduced.
The method has the advantages that: the voltage class of the overhead insulated cable is 10KV, the long-term allowable operating temperature is increased to over 180 ℃, the overhead insulated cable not only can bear 1.5 times of current carrying capacity of the conventional overhead insulated cable, but also can effectively melt ice and snow on the cable, and the operation safety of a line is ensured.
The advantages are that: this built on stilts insulated cable through increase the instruction label on the surface of protective layer, utilizes the instruction label to take notes basic information such as model specification and voltage of cable, and the staff of being convenient for discerns, can roughly detect the length of cable through the quantity of instruction label simultaneously, has improved this built on stilts insulated cable's practicality.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structure of an overhead insulated cable of the present invention;
fig. 2 is a schematic view showing an installation position of an indication label of the overhead insulated cable of the present invention.
In the figure: 1. a conductive wire core; 2. a protective layer; 3. supporting the wire; 4. an insulating and heat-insulating layer; 5. a fire barrier layer; 6. a layer of insulating material; 7. supporting the protection net; 8. an outer protective layer; 9. the label is indicated.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order that the present disclosure may be more fully understood and fully conveyed to those skilled in the art. While the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention is not limited to the embodiments set forth herein.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity only, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed and operated in a specific orientation, and not limit the scope of the present invention, and the relative relationship between the designated device or element and the designated device or element may be changed or adjusted without substantially changing the technical content of the present invention. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, for example, as being fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 2, an overhead insulated cable with a voltage level of 10KV includes a conductive core 1, and the conductive core 1 is a TY-type round copper wire. The conductive wire core 1 comprises a thick conductive wire core 101 positioned at the center and thin conductive wire cores 102 arrayed with the thick conductive wire core 101 as the center, wherein the number of the thick conductive wire cores 101 is 1, and the number of the thin conductive wire cores 102 is 6.
The surface of the conductive wire core 1 is fixedly sleeved with an insulating material layer 6, and the inside of the insulating material layer 6 is fixedly sleeved with a supporting wire 3; the number of the supporting wires 3 is 6, and the supporting wires are respectively arranged in the middle of two adjacent thin conductive wire cores 102.
The surface of the insulating material layer 6 is fixedly connected with a fireproof layer 5, and the fireproof layer 5 is made of a magnesium oxide insulating material layer.
The fixed surface of flame retardant coating 5 is connected with insulating layer 4, and insulating layer 4's fixed surface has cup jointed support protection network 7, and support protection network 7 is the steel wire netting structure.
The surface of the supporting protection net 7 is fixedly connected with a protection layer 2, and the material of the protection layer 2 is a mixed material of weather-resistant polyethylene, polyethylene and cross-linked polyethylene.
The material of the protective layer 2 is weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein the weight ratio of the components is 80-100 parts of weather-resistant polyethylene, 60-80 parts of polyethylene, 75-95 parts of cross-linked polyethylene, 1-5 parts of phenol antioxidant, 1-3 parts of phosphite antioxidant, 1-3 parts of cross-linking agent and 0-20 parts of filling agent. An external protective film 8 is fixedly sleeved on the surface of the protective layer 2.
An indication label 9 is fixedly connected to the surface of the protective layer 2. The indication labels 9 are linearly arranged on the surface of the protective layer 2, and the upper surfaces of the indication labels 9 are parallel to the surface of the protective layer 2; the distance between two adjacent indicator tags 9 is 500 m.
Example 1
Referring to fig. 1 to 2, an overhead insulated cable includes conductive cores 1, where the conductive cores 1 are TY-type round copper wires, the conductive cores 1 include thick conductive cores 101 located at the center and thin conductive cores 102 arrayed with the thick conductive cores 101 as the center, the number of the thick conductive cores 101 is 1, and the number of the thin conductive cores 102 is 6.
The surface of the conductive wire core 1 is fixedly sleeved with insulating silica gel 6, and the surface of the insulating material layer 6 is fixedly connected with a fireproof layer 5. The material of flame retardant coating 5 is magnesium oxide insulating material layer, through the use of flame retardant coating 5, utilizes the material of flame retardant coating 5 to be magnesium oxide insulating material layer, makes this built on stilts insulated cable when receiving the source of a fire threat, separates the fire through flame retardant coating 5, and then avoids this built on stilts insulated cable fire to burn cracked problem to appear, has improved this built on stilts insulated cable's stability.
The fixed surface of flame retardant coating 5 is connected with insulating layer 4, and insulating layer 4's fixed surface has cup jointed the support protecting wire net 7, supports protecting wire net 7 and is the steel wire mesh structure, and insulating silica gel 6's inside fixed cover has connect supporting wire 3, and the quantity of supporting wire 3 is 6, sets up respectively in the centre department of two adjacent thin conductive wire core 102. Through supporting the cooperation use of protection network 7 and supporting wire 3, when this overhead insulated cable carries out the during operation, utilize to support protection network 7 and supporting wire 3 and improved this overhead insulated cable's toughness, avoid overhead insulated cable to receive the problem appearance of external force fracture deformation, prolonged this overhead insulated cable's life.
The surface of the supporting protection net 7 is fixedly connected with a protection layer 2, and the protection layer 2 is made of weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein, the weight ratio of the components is 80 parts of weather-resistant polyethylene, 60 parts of polyethylene, 75 parts of cross-linked polyethylene, 1 part of phenolic antioxidant, 1 part of phosphite antioxidant, 1 part of cross-linking agent and 1 part of filling agent; the filler comprises calcium carbonate, argil, talcum powder, white carbon black and wollastonite. The protective layer 2 not only improves the weather resistance of the overhead insulated cable, but also meets the standard of the cable in performance.
Fixed cover on the surface of protective layer 2 has been met outside protecting film 8, the fixed surface of protective layer 2 is connected with instruction label 9, instruction label 9 is linear arrangement on protective layer 2's surface, the upper surface of instruction label 9 and protective layer 2's surface parallel, distance between two adjacent instruction labels 9 is 500m, utilize instruction label 9 to record basic information such as the model specification and the voltage of cable, the staff of being convenient for discerns, simultaneously because the distance between two adjacent instruction labels 9 is 500m, can roughly detect the length of cable through the quantity of instruction label 9, the practicality of this overhead insulated cable has been improved.
Example 2
The material of the protective layer 2 is weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein the weight ratio of the components is 100 parts of weather-resistant polyethylene, 80 parts of polyethylene, 95 parts of cross-linked polyethylene, 5 parts of phenolic antioxidant, 3 parts of phosphite antioxidant, 3 parts of cross-linking agent and 20 parts of filling agent. The protective layer 2 not only improves the weather resistance of the overhead insulated cable, but also meets the standard of the cable in performance.
The rest is the same as example 1.
Example 3
The surface of the supporting protection net 7 is fixedly connected with a protection layer 2, and the protection layer 2 is made of weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein, the weight ratio of the components is 90 parts of weather-resistant polyethylene, 70 parts of polyethylene, 75 parts of cross-linked polyethylene, 3 parts of phenol antioxidant, 2 parts of phosphite antioxidant, 2 parts of cross-linking agent and 10 parts of filling agent; the filler comprises calcium carbonate, argil, talcum powder, white carbon black and wollastonite. The protective layer 2 not only improves the weather resistance of the overhead insulated cable, but also meets the standard of the cable in performance.
The rest is the same as example 1.
When the overhead insulated cable of the technical scheme is used, a proper overhead insulated cable is selected according to cable information engraved on the indication labels 9, the distance between the two indication labels 9 is 500 meters, the overhead insulated cable is paid off according to the number of the indication labels 9, and then the overhead insulated cable is installed.
To sum up, in embodiments 1 to 3, the tensile strength of the overhead insulated cable according to the present technical solution is at least 3 times higher than that of the conventional steel-cored aluminum strand, but the weight of the core material is only 1/3 of the conventional steel core, which greatly reduces the total weight and volume of the overhead insulated cable. The overhead insulated cable of the technical scheme can allow the operating temperature to be increased to over 180 ℃ for a long time, not only can bear 1.5 times of current carrying capacity of the conventional overhead insulated cable, but also can effectively melt ice and snow on the cable, and ensures the safety of line operation.
Although the embodiments have been described, once the basic inventive concept is obtained, other variations and modifications of these embodiments can be made by those skilled in the art, so that these embodiments are only examples of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that can be used in the present specification and drawings, or used directly or indirectly in other related fields are encompassed by the present invention.
Claims (9)
1. An overhead insulated cable, characterized in that: including conductive core (1), the fixed surface of conductive core (1) has cup jointed insulating material layer (6), the fixed surface of insulating material layer (6) is connected with flame retardant coating (5), the fixed surface of flame retardant coating (5) is connected with insulating layer (4), the fixed surface of insulating layer (4) has cup jointed support protecting net (7), the fixed surface of support protecting net (7) is connected with protective layer (2), the fixed surface of protective layer (2) has cup jointed outside protecting film (8), the fixed surface of protective layer (2) is connected with indication label (9).
2. The overhead insulated cable of claim 1, wherein: the conductive wire core (1) comprises a thick conductive wire core (101) located at the center and thin conductive wire cores (102) arrayed by taking the thick conductive wire core (101) as the center, the number of the thick conductive wire cores (101) is 1, and the number of the thin conductive wire cores (102) is 6.
3. The overhead insulated cable of claim 1, wherein: the protective layer (2) is made of weather-resistant polyethylene, cross-linked polyethylene, a phenol antioxidant, a phosphite antioxidant, a cross-linking agent and a filling agent; wherein the weight ratio of the components is 80-100 parts of weather-resistant polyethylene, 60-80 parts of polyethylene, 75-95 parts of cross-linked polyethylene, 1-5 parts of phenol antioxidant, 1-3 parts of phosphite antioxidant, 1-3 parts of cross-linking agent and 0-20 parts of filling agent.
4. The overhead insulated cable of claim 1, wherein: the supporting lead (3) is fixedly sleeved in the insulating material layer (6); the number of the supporting wires (3) is 6, and the supporting wires are respectively arranged in the middle of two adjacent thin conductive wire cores (102).
5. The overhead insulated cable of claim 1, wherein: the indicating labels (9) are linearly arranged on the surface of the protective layer (2), and the upper surfaces of the indicating labels (9) are parallel to the surface of the protective layer (2); the distance between two adjacent indicator labels (9) is 500 m.
6. An overhead insulated cable according to claim 1 or 2, characterized in that: the conductive wire core (1) adopts TY type round copper wire and round aluminum wire.
7. The overhead insulated cable of claim 1, wherein: the supporting protection net (7) is of a steel wire net structure.
8. The overhead insulated cable of claim 1, wherein: the fireproof layer (5) is made of a magnesium oxide insulating material layer.
9. The overhead insulated cable of claim 1, wherein: the voltage class of the overhead insulated cable is 10 KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911297240.1A CN112992417A (en) | 2019-12-17 | 2019-12-17 | Overhead insulated cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911297240.1A CN112992417A (en) | 2019-12-17 | 2019-12-17 | Overhead insulated cable |
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| CN112992417A true CN112992417A (en) | 2021-06-18 |
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| CN201911297240.1A Pending CN112992417A (en) | 2019-12-17 | 2019-12-17 | Overhead insulated cable |
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| CN207068517U (en) * | 2017-08-10 | 2018-03-02 | 沈阳军航电源科技有限公司 | One kind control cable |
| CN207397770U (en) * | 2017-09-16 | 2018-05-22 | 陕西理工大学 | A kind of graphene composite coating aerial condutor |
| CN107577016A (en) * | 2017-10-03 | 2018-01-12 | 于洋 | Cable configuration |
| CN207367655U (en) * | 2017-10-28 | 2018-05-15 | 江西圣塔电缆科技有限公司 | One kind blocks water aerial polyethylene insulated cable |
| EP3514804A1 (en) * | 2018-01-19 | 2019-07-24 | Fanuc Corporation | Cable |
| CN208093212U (en) * | 2018-03-12 | 2018-11-13 | 广东南帆电器有限公司 | A kind of fireproof wear-resisting electric wire |
| CN209343811U (en) * | 2018-03-12 | 2019-09-03 | 台山市电缆厂有限责任公司 | A kind of polyvinyl chloride insulating flexible cable |
| CN208538539U (en) * | 2018-04-17 | 2019-02-22 | 广州市永利隆电线电缆有限公司 | A kind of new structure controllable high-temperature-resgelant cable |
| CN208208413U (en) * | 2018-05-16 | 2018-12-07 | 辽宁津达线缆有限公司 | A kind of carbon fiber complex core aerial condutor |
| CN208284288U (en) * | 2018-06-14 | 2018-12-25 | 海欣电工科技有限公司 | A kind of compound inslation fire-retardant fireproof flexible cable |
| CN109148002A (en) * | 2018-08-30 | 2019-01-04 | 安徽华上电缆科技有限公司 | A kind of waterproof heat-resisting electrical control cable |
| CN209357491U (en) * | 2018-11-22 | 2019-09-06 | 西部电缆股份有限公司 | A kind of cable with tension function |
| CN209447583U (en) * | 2019-01-21 | 2019-09-27 | 河北嘉德电力器材有限公司 | A kind of aerial insulated cable of stable structure |
| CN209691449U (en) * | 2019-02-25 | 2019-11-26 | 云南多宝电缆集团股份有限公司 | A kind of multicore high flexibility mineral insulation heat-insulating, fire-preventing cable |
| CN209691466U (en) * | 2019-05-27 | 2019-11-26 | 成都八达接插件有限公司 | A kind of aerial cable destaticed automatically |
| CN110289127A (en) * | 2019-07-05 | 2019-09-27 | 昆明三川电线电缆有限公司 | A kind of high performance heat resistant type minerals fireproof cable |
| CN210777962U (en) * | 2019-12-11 | 2020-06-16 | 西安华联电力电缆有限公司 | Overhead cable |
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Application publication date: 20210618 |