WO2018128230A1

WO2018128230A1 - Anti-rodent optical cable

Info

Publication number: WO2018128230A1
Application number: PCT/KR2017/006802
Authority: WO
Inventors: 김태경; 이유형; 이만수; 민은경
Original assignee: 엘에스전선 주식회사
Priority date: 2017-01-03
Filing date: 2017-06-28
Publication date: 2018-07-12
Also published as: KR20180080085A; KR101940927B1; KR20180080099A; KR101932852B1; MX2019007980A

Abstract

The present invention relates to an optical cable for a bulk overhead line, enabling the weight of the cable to be minimized while ensuring an anti-rodent function and an all-dielectric self-supporting (ADSS) performance.

Description

[Revision 25.07.2017 under Rule 26] Optical cable with defense function

The present invention relates to an optical cable having an anti-rodent function. More specifically, the present invention relates to an optical cable for a large-capacity overhead line that can minimize the weight of the cable while securing a deflection function and all-dielectric self-supporting (ADSS) performance.

Recently, optical cables are mainly used as communication cables, and these optical cables are also installed in a form of overhead lines.

When the optical cable is installed in the form of overhead lines, the cable is often damaged by rodents such as mice or squirrels. Rodents such as rats or squirrels continue to grow their incisors in addition to feeding behavior due to the problem that their incisors continue to grow. It has a habit.

In the case of using an optical cable for processing, a problem occurs in that the cable is broken because a squirrel or a mouse crushes the cable for polishing the front teeth, and thus, the processing optical fiber requires an anti-spinning function.

Conventionally, in order to provide an anti-corrosion function, a method of wrapping a steel tape or the like inside the exterior of a cable is considered, or as disclosed in Japanese Patent Laid-Open No. 2004-292317, silafluorene and microencapsulation in a cable And a method of including an antiseptic agent containing capsaicin.

However, when steel tape is used, the steel tape must be grounded separately, and when applied to overhead wires, there is a problem in that weight increases, and when a power line is installed around the optical cable in the form of overhead wires, due to electromagnetic influences, If the tape cannot be used and the capsaicin component is contained in the outer jacket of the cable, the pesticide component such as silafluorene or the deterioration of the capsaicin may not provide a continuous protection function for the life of the cable over time. There was.

In addition, there is also a method of providing a nylon layer inside the outer shell to provide a thermal protection function, but experimentally confirmed that the thermal protection performance is only about 80% compared to the steel tape can not provide sufficient thermal protection function. .

An object of the present invention is to provide an optical cable for a high-capacity overhead line that can minimize the weight of the cable while securing anti-rotation and all-dielectric self-supporting (ADSS) performance.

In order to solve the above problems, the present invention is a core comprising at least one optical unit, a strip (W) having a width (W) larger than the thickness (t), the plurality of radiation protection member and the radiation protection member disposed to surround the core It is possible to provide an optical cable including an outer jacket surrounding the outside.

In addition, the plurality of anti-radiation members may be horizontally wound in a spiral along the longitudinal direction of the core and the pitch may be 500 mm to 1000 mm.

In addition, the anti-radiation member may have a Mohs hardness of 5.0 or more.

Here, the anti-radiation member may have a flexural modulus of 4500 kgf / mm ^{2 or} more.

In this case, the deflection member may have a flexural strength of 90 kgf / mm ^{2 or} more.

In addition, at least one of the optical units of the core may accommodate the optical fiber and the waterproof member in the loose tube.

The loose tube may be made of polybutylene terephthalate or polypropylene, and the waterproof member may be thixotropic compound jelly, waterproof yarn, or waterproof powder.

Here, the core may be provided with a central tensile line in the center, the optical unit may be provided around the central tensile line.

In addition, the optical fiber may have a size corresponding to the optical unit around the central tensile line, and at least one intervening member may be provided of polyethylene or polypropylene.

The central tensile line may be in contact with a plurality of optical units or a plurality of interpositions, and each optical unit or interposition may have an outer diameter that may be arranged to contact two adjacent optical units or interpositions.

Here, the width of the anti-radiation member may be 2.0 millimeters (mm) to 3.6 millimeters (mm), the thickness may be 0.5 millimeters (mm) to 1.5 millimeters (mm).

In this case, each of the barrier members has a shape having the largest width W at the central position of the thickness, and when the number of the barrier members is n, from the center of the cable to the center of thickness of the barrier member. When the distance is R, the total sum of the widths W of the anti-radiation member surrounding the core may satisfy 0.1 millimeter (mm) <2π × R − n × W <2.0 millimeters (mm).

In addition, the anti-radiation member may be composed of a fiber reinforced plastic.

The core may be wrapped with a binding tape.

In addition, in order to solve the above problems, the present invention, in the all-dielectric self-supporting cable (ADSS) optical cable for overhead lines having an anti-defense function, the center tension line disposed in the center; At least one loose tube accommodating a plurality of optical fibers and a waterproof member disposed around the center tensile line; A binding member surrounding the loose tube; Is formed on the outside of the binding member, to provide an anti-defense function is composed of a fiber-reinforced plastic material, a plurality of flat and elongated member arranged to be adjacent to each other in the longitudinal direction of the cable; And an outer jacket provided outside the defense member.

In addition, the width of the anti-radiation member may be 2.0 millimeters (mm) to 3.6 millimeters (mm), and the thickness may be 0.5 millimeters (mm) to 1.5 millimeters (mm).

In this case, the fiber-reinforced plastic constituting the anti-radiation member may have a Mohs hardness of 5.0 or more, a flexural modulus of 4500 kgf / mm ² or more, and a flexural strength of 90 kgf / mm ^{2 or} more.

In addition, each of the barrier members has a shape having the largest width W at the center of thickness, and when the number of the barrier members is n, the distance from the center of the cable to the center of thickness of the barrier member. When R is, the sum of the width W of the anti-radiation member surrounding the core may satisfy 0.1 millimeter (mm) <2π × R − n × W <2.0 millimeters (mm).

The plurality of anti-radiation members are helically wound along the cable length direction, and the pitch thereof may be 500 mm to 1000 mm.

In addition, an inner jacket may be further provided between the binding member and the plurality of defense members.

The optical cable according to the present invention is provided with a strip-shaped anti-proof member having a width larger than the thickness thereof to sufficiently prevent damage to the cable core due to teeth such as rodents.

In addition, the optical cable according to the present invention is to provide a large capacity optical cable for the processing line by sufficiently reducing the weight of the optical cable by replacing the protective layer of the metal material provided in the conventional optical cable with fiber reinforced plastic (FRP) material to provide an anti-defense function. Can be.

In addition, the optical cable according to the present invention can improve the tensile strength of the optical cable than the case of having a protective layer made of metal by applying the center tension line and the anti-radiation member to the fiber reinforced plastic (FRP) material.

In addition, since the optical cable according to the present invention does not include a metal structure therein, it satisfies the conditions of all dielectric self supporting (ADSS), thereby improving performance as an optical cable for overhead lines installed between a communication pole or a power line pole and a steel tower. Can be satisfied.

1 shows a cross-sectional view of one embodiment of an optical cable according to the invention.

2 shows a cross-sectional view of another embodiment of an optical cable according to the invention.

3 shows a cross-sectional view of another embodiment of an optical cable according to the invention.

FIG. 4 shows a partially enlarged view of the optical cable shown in FIG. 3.

5 shows a cross-sectional view of another embodiment of an optical cable according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosure may be made thorough and complete, and to fully convey the spirit of the invention to those skilled in the art. Like numbers refer to like elements throughout the specification.

1 shows a cross-sectional view of one embodiment of an optical cable according to the present invention, and FIG. 2 shows a cross-sectional view of another embodiment of an optical cable according to the present invention.

In order to provide an anti-corrosion function to an optical cable, the present invention provides a core (C) including one or more optical units, a strip shape having a width (W) larger than the thickness (t), and a plurality of anti-radiation members disposed to surround the core. An optical cable 1 may be provided including an external jacket 800 surrounding the outside of the defense member 600.

The present invention relates to a processing optical cable may be provided with a plurality of optical units (100).

In the optical cable center according to the present invention may be provided with a central tensile line 200 for reinforcing the tensile force. The central tensile line 200 may be made of a material such as fiber reinforced plastics (FRP) to provide sufficient tensile strength.

1 and 2, at least one optical unit 100 may be provided around the center tensile line 200. The optical unit 100 may include at least one optical fiber 110 therein. In general, the optical unit 100 may be a tight buffer method and a loose tube method in which there is no empty space therein, and the optical unit 100 of the optical cable according to an embodiment of the present invention may have one optical fiber as described below. Since a plurality of optical fibers are accommodated in the unit 100, a loose tube method is applied.

In the optical unit 100 of the optical cable illustrated in FIGS. 1 and 2, six optical fibers 110 and a waterproof member 130 may be accommodated in the loose tube 150. The loose tube 150 may be made of polybutylene terephthalate or polypropylene, and the waterproof member 130 may be thixotropic compound jelly, waterproof yarn, waterproof powder, or the like. Can be.

The optical cable shown in FIG. 1 is provided with two optical units 100 around the center tension line 200 according to the required communication capacity, and the optical cable shown in FIG. 2 has a circumference of the center tension line 200. Four optical units 100 are provided.

Therefore, the optical cable shown in FIG. 1 is provided with a total of 12 optical fibers 110, the optical cable shown in Figure 2 may be provided with 24 optical fibers (110).

In this case, the optical unit 100 is disposed around the center tensile line 200, and at least one interposition may be provided in order to keep the cable as a whole.

1 and 2 are provided with three and one intervening, respectively. The interposition may have a diameter corresponding to that of the optical unit 100 and may be made of polyethylene or polypropylene.

The interposition may not increase or decrease the number according to the required communication capacity, and may not constitute a core as in the following embodiments.

1 and 2, the central tensile line 200 is in contact with two and four optical units 100, respectively, and in contact with three and one interposition. 1 and 2, the optical unit 100 or the interposition of the embodiment illustrated in FIGS. 1 and 2 is disposed to be in contact with two adjacent optical units 100 or the interposition, and has a central tensile line 200 and an optical unit 100 having a circular cross section. ) And the space inside the core, which can be composed of intervening elements, to minimize the movement of the components constituting the core.

In order to be configured in such a state that the core is in contact with each other and the optical unit 100 having a corresponding diameter disposed around the center tension line 200 so that the core does not move around the center tension line 200 It is important to properly determine the diameter of the center tensile line 200.

In this case, when the optical unit 100 and the interposition have a diameter corresponding to each other, the center tensile line when the sum of the number of the optical unit 100 and the interposition is 5 or less based on 6 If the diameter of the 200 is smaller than the diameter of the optical unit 100 or the intervening, and more than seven, the diameter of the central tensile line 200 should be configured to be larger than the diameter of the optical unit 100 or the intervening. Of course, the size of the center tensile line 200 may be determined in a range that satisfies the contact condition with the center tensile line 200 and the contact condition between the adjacent optical unit 100 or the interposition.

The inner space of the core may be provided with a waterproof yarn (400). If the waterproof yarn 400 has absorbency, it may be made of various materials.

The core C consisting of the central tensile line 200, the optical unit 100, and the interposition may be selectively bound with a binding tape 500. The binding tape 500 may be one type of a binding member for maintaining the core C in a circular shape as a whole, and for evening the mounting surface of the anti-deflecting member 600 to be described later, but is not limited to the binding tape.

1 and 2 may be arranged to surround the core a plurality of anti-deflecting member 600 to the outside of the core or the binding tape according to the invention shown in FIG. The defense member 600 is provided to prevent damage by rodents.

Specifically, the anti-proof member 600 may be spirally wound along the longitudinal direction of the core on the outer peripheral surface of the core, the pitch may be configured to about 500mm to 1000mm for the bending characteristics.

As shown in FIGS. 1 and 2, the air defense member 600 is made of a fiber reinforced plastics (FRP) material having a width (w, see FIG. 4) greater than a thickness (t, see FIG. 4). Can be.

The plurality of anti-radiation members 600, which are configured in the shape of a square strip having a width W greater than the thickness t, may be horizontally wound in a spiral at the same pitch on the outer circumferential surface of the core.

Conventionally, a method such as having a steel tape or the like inside the outer jacket 800 is used for an anti-defense function, but an all-dielectric self-supporting cable (ADSS) for overhead lines installed with power lines increases the weight of the cable. Not suitable for

All-dielectric self-supporting cable (ADSS) optical cable is a cable for overhead lines installed between communication poles or power line poles and steel towers. It means a cable that has a characteristic of safely maintaining its function even under electric induction and lightning strike.

Experimentally, the anti-radiation member 600 applied to the optical cable according to the present invention has a Mohs hardness of 5.0 or more, a flexural modulus of 4500 kgf / mm ² or more, and flexural strength in order to secure sufficient anti-corrosion function. strength) was found to be preferably composed of a non-metallic material of more than 90kgf / mm ² . When the material of the anti-radiation member was composed of the material satisfying the above conditions, it was possible to safely protect the inside of the core by preventing the damage of the teeth of the rodent animal accessible to the processing line.

The optical cable according to the present invention provides a sufficient protection function as described above, and can be applied to the protection member 600 made of fiber reinforced plastics (FRP) as a material of the protection member 600 for implementing an ADSS cable. have.

When applying the fiber reinforced plastics (FRP, fiber reinforced plastics) as the anti-proof member 600, Mohs (hardness) hardness of 5.0 or more, flexural modulus is 4500kgf / mm ² or more, and flexural strength Was able to meet all the requirements of 90kgf / mm ² or more nonmetallic material.

The anti-proof member 600 is installed without gaps to protect the inside and at the same time maintain the cable as circular as possible. Therefore, the anti-radiation member 600 may be formed in a flat, long or flat form, and may be installed side by side along the circumferential direction of the core of the cable.

In addition, each optical unit constituting the all-dielectric self-supporting cable (ADSS) optical cable for overhead lines according to the present invention may accommodate 6, 12 or 24 optical fibers 110, for example, The optical unit may be provided in multiple layers to form a large capacity optical cable.

1 and 2, the diameter of the entire cable is expected to be at least about 11 millimeters (mm) up to 17 millimeters (mm), and to stably and securely protect the inside of the optical cable having such a diameter. In order to keep the circular shape as much as possible, the width of the anti-radiation member 600 is 2.0 millimeters (mm) to 3.6 millimeters (mm), the thickness is preferably 0.5 to 1.5 millimeters (mm) in size. Confirmed.

Smaller thicknesses and widths can easily be damaged by rodent teeth, while larger thicknesses and widths can enhance the protection, but the diameter and weight of fiber optic cables will increase significantly.

An outer jacket 800 may be provided outside the barrier layer by the barrier member 600, and the outer jacket 800 may be formed of a material such as polyethylene (PE) or high density polyethylene (HDPE). The outer jacket 800 may have a size of about 1.2 millimeters (mm) to about 2.5 millimeters (mm).

When the outer jacket 800 is coated on the outer circumferential surface of the barrier member 600, a nonwoven fabric may be wrapped to prevent lifting of the barrier member 600 and to facilitate the work.

The outer jacket 800 may include at least one lip cord 700 for separating the outer jacket 800 during field work.

And, although not shown, an inner jacket may be further provided between the binding member and the plurality of defense members.

1 and 2, six optical fibers 110 are identically provided in one optical unit 100, and two and four optical units 100 are disposed around a central tensile line 200. It is provided, the difference is the number of the interposition, even if the structure having a central tension line 200 in the center by the interposition method can maintain the cable as circular as possible, it can prevent the diameter of the cable is too thin. . 1 and 2, the total diameter D1 satisfies the conditions of 11 millimeters (mm) to 12 millimeters (mm), respectively.

In addition, since the optical cable according to the present invention has both the center tensile wire 200 and the anti-deflective member 600 in the form of fiber-reinforced plastic, as described above, the tensile strength is reduced even if the weight is reduced than the optical cable to which the metal tape is applied for the conventional anti-defense function. It is possible to obtain an effect of improving.

3 shows a cross-sectional view of another embodiment of an optical cable according to the invention. Descriptions duplicated with those described with reference to FIGS. 1 and 2 will be omitted.

1 and 2 are provided with two and four optical units 100 around the center tension line 200, each optical unit 100 accommodates six optical fibers 110, a total of 12 and It is an optical cable provided with 24 optical fibers 110.

Eight optical units 100 shown in FIG. 3 are provided, and each optical unit 100 is provided with twelve optical fibers 110 to provide 96 optical fibers 110 and the center tensile line 200. There is a difference in that only the optical unit 100 is disposed, not intervening in the circumference.

As described above, when the number of the optical units 100 or the interposition of the optical unit 100 disposed around the central tensile line 200 is seven or more based on six, the diameter of the central tensile line 200 is the optical unit 100. When larger than the diameter of the or the like, the central tensile line 200 and the optical unit 100 disposed around the same may be closely contacted without empty space.

In the example shown in FIG. 3, since only eight optical units 100 are provided, the diameter of the central tensile line 200 must be larger than the diameter of the optical unit 100 so that the spaces inside the core can be closely adhered to each other. .

In addition, unlike the center tensile line 200 illustrated in FIGS. 1 and 2, the center tensile line 200 of the embodiment illustrated in FIG. 3 is provided with a polyethylene coating layer 230 on the outer side of the fiber-reinforced plastic 210. do.

Therefore, if the fiber-reinforced plastics 210 cannot form a sufficient thickness of the center tension line 200 only, the coating layer 230 is added to increase the thickness of the center tension line 200 so that there is no empty space inside the core. I can regulate it.

In addition, the anti-radiation member 600 may be spirally wound along the longitudinal direction of the core on the outer peripheral surface of the core to improve the bending characteristics, and is intended to protect the inside of the cable from damage caused by teeth of animals such as rodents. Even if the thickness is sufficiently secured to provide sufficient rigidity, the gap between the defense member 600 arranged in the longitudinal direction of the core is widened, or the arranged defense member 600 is pushed up and twisted together. If the cable is not kept round, the original function of the radiation prevention member 600 cannot be achieved.

Therefore, in the optical cable according to the present invention, it is necessary to optimally control the interval between the defense member 600 disposed on the outer peripheral surface of the core.

As described above, the anti-radiation member 600 has a width of 2.0 mm (mm) to 3.6 mm (mm), the thickness is preferably determined in the range of the size of 0.5 mm (mm) to 1.5 mm (mm), The number of the anti-radiation members 600 installed in the cross-sectional direction should be determined according to the capacity of the cable, that is, the number of optical units 100 or the number of optical fibers 110 accommodated in one optical unit 100.

FIG. 4 shows a partially enlarged view of the optical cable shown in FIG. 3.

As shown in FIG. 4, the anti-radiation member 600 may have a shape close to a flat quadrangle having a somewhat rounded side rather than a rectangular shape.

Therefore, the width of the anti-radiation member 600 is largest in the vicinity of the center of the thickness. In the case where the distance from the center of the optical cable to the center of the thickness direction of the radiation prevention member 600 at which the thickness of the radiation prevention member 600 is maximum is set to R, and the width of the radiation prevention member 600 at the maximum is set to w, the core The number n of the defense member 600 to be disposed on the outer peripheral surface of the experimentally obtained the following conclusions.

When the number of the radiation protection member 600 is n, when the distance from the center of the cable to the thickness center of the radiation prevention member 600 is R, the sum of the widths W of the radiation protection member 600 surrounding the core is 0.1 millimeter (mm) <2π × R-n × W <2.0 millimeter (mm)

Here, 2π × R is the size of the radius R, the length of the circumference of the circle penetrating through the thickness direction center of the anti-radiation member 600, and n × W is the sum of the widths of each anti-radiation member 600.

When the width of the barrier member 600 is sufficiently small, the length of the circular arc passing through the thickness direction center of the barrier member 600 and the width of the barrier member 600 penetrating the thickness center of the barrier member 600 are It can be assumed that they are about the same size, and 2π × R − n × W can be assumed to be the sum of the intervals g between the center points in the thickness direction of each end member 600.

Experimentally, the total sum of the gaps between the members 600 should be less than 2.0 millimeters (mm) to protect the inside of the core sufficiently to prevent penetration of teeth of rodents accessible to the optical cables installed on the processing line. It should be confirmed that the cable can be maintained as circular as possible without causing problems such as twisting and preventing the member 600 by being pushed to each other only when it is at least millimeters (mm).

That is, since the preferred width of the anti-radiation member 600 is 2.0 millimeters (mm) to 3.6 millimeters (mm) as described above, if the value of 2π × R − n × W is 3.8 millimeters (mm), the anti-radiation member 600 ) Means that the defense member 600 should be added about one more.

In addition, if the value of 2π × R − n × W is 0.05 millimeter (mm), even if a slight impact or bending is applied to the cable, it means that the cable is difficult to maintain its original shape due to twisting and deflecting member 600. Here, if one of the member 600 is removed, if the range is not satisfied again, it is preferable to apply the member 600 that is slightly smaller in the range of 2.0 millimeters (mm) to 3.6 millimeters (mm). Can mean.

In addition, the optical cable shown in FIGS. 3 and 4 has a total cable diameter D2 of only 13 millimeters (mm) to 14 millimeters (mm) even when 96 optical fibers 110 are accommodated in a loose tube method. It was.

5 shows a cross-sectional view of another embodiment of an optical cable according to the present invention. Descriptions duplicated with those described with reference to FIGS. 1 through 4 will be omitted.

5 is provided with only 12 optical units 100 in the form of a loose tube without intervening around the center tensile line 200, 12 optical fibers 110 are provided in each optical unit 100 It is equipped with a total of 144 optical fibers 110 to enable a large capacity optical communication.

In addition, the center tension line 200 and the optical unit 100 is in contact with each other, each optical unit 100 is in contact with the two adjacent optical unit 100 to minimize the empty space therein, the central tension It can be seen that the diameter of the line 200 is larger than the diameter of the optical unit 100.

In addition, the optical cable shown in Figure 5 can be laid for the processing line with a total cable diameter (D3) of 16 millimeters (mm) to 17 millimeters (mm) and at the same time sufficient protection function, ADSS ( It can be confirmed that all-dielectric self-supporting conditions and weight conditions can be satisfied.

Although the present specification has been described with reference to preferred embodiments of the invention, those skilled in the art may variously modify and change the invention without departing from the spirit and scope of the invention as set forth in the claims set forth below. Could be done. Therefore, it should be seen that all modifications included in the technical scope of the present invention are basically included in the scope of the claims of the present invention.

Claims

A core comprising one or more optical units;

A plurality of anti-corrosion members having a strip shape having a width W greater than the thickness t and arranged to surround the core; And

And an outer jacket surrounding the outside of the defense member.
The method of claim 1,

The plurality of anti-radiation members are helically wound along the longitudinal direction of the core and the pitch is 500mm to 1000mm.
The method of claim 1,

The anti-radiation member is an optical cable, characterized in that Mohs (Mhos) hardness of 5.0 or more.
The method of claim 1,

The anti-radiation member is an optical cable, characterized in that the bending modulus (Flexural modulus) is more than 4500kgf / mm 2
The method of claim 1,

The anti-radiation member is an optical cable, characterized in that the flexural strength is more than 90kgf / mm 2 .
The method of claim 1,

At least one of the optical unit of the core is an optical cable, characterized in that the optical fiber and the waterproof member is accommodated in the loose tube.
The method of claim 6,

The loose tube is made of polybutylene terephthalate (Polybutylene terephthalate) or polypropylene (Polypropylene) material, the waterproof member is thixotropic compound jelly (thixotropic compound jelly), waterproof yarn, waterproof powder, characterized in that the powder.
The method of claim 1,

The core has a central tensile line is disposed in the center, the optical cable, characterized in that the optical unit is provided around the central tensile line.
The method of claim 8,

An optical cable having a size corresponding to the optical unit around the central tensile line, and having at least one intervening material made of polyethylene or polypropylene.
The method of claim 8,

And the central tensile line is in contact with the plurality of optical units or the plurality of interpositions, and each optical unit or the interposition has an outer diameter that can be arranged to be in contact with two adjacent optical units or the interposition.
The method of claim 1,

The width of the radiation member is 2.0 mm (mm) to 3.6 mm (mm), the thickness is 0.5 mm (mm) to 1.5 mm (mm) characterized in that the optical cable.
The method of claim 11,

Each of the barrier members has a shape having the largest width W at the central position of the thickness, and when the number of the barrier members is n, the distance from the center of the cable to the center of thickness of the barrier member is R. When, the total of the width (W) of the anti-radiation member surrounding the core is 0.1 mm (mm) <2π × R-n × W <2.0 mm (mm) to satisfy the optical cable.
The method of claim 1,

The anti-radiation member is an optical cable, characterized in that composed of fiber reinforced plastics.
The method of claim 1,

And the core is wrapped with a binding tape.
In the all-dielectric self-supporting cable (ADSS) optical cable for overhead lines with anti-deflection function,

A center tensile line disposed at the center portion;

At least one loose tube accommodating a plurality of optical fibers and a waterproof member disposed around the center tensile line;

A binding member surrounding the loose tube;

Is formed on the outside of the binding member, to provide an anti-defense function is composed of a fiber-reinforced plastic material, a plurality of flat and elongated member arranged to be adjacent to each other in the longitudinal direction of the cable; And,

And an outer jacket provided outside the defense member.
The method of claim 15,

The width of the radiation member is 2.0 mm (mm) to 3.6 mm (mm), the thickness is 0.5 mm (mm) to 1.5 mm (mm) characterized in that the optical cable.
The method of claim 15,

Fiber-reinforced plastic constituting the anti-radiation member is Moh (Mhos) hardness 5.0 or more, Flexural modulus (Flexural modulus) is more than 4500kgf / mm 2 And the flexural strength (Flexural strength) is characterized in that 90kgf / mm 2 or more.
The method of claim 15,

Each of the barrier members has a shape having the largest width W at the central position of the thickness, and when the number of the barrier members is n, the distance from the center of the cable to the center of thickness of the barrier member is R. When, the total of the width (W) of the anti-radiation member surrounding the core is 0.1 mm (mm) <2π × R-n × W <2.0 mm (mm) to satisfy the optical cable.
The method of claim 15,

The plurality of anti-radiation members are helically wound along the cable longitudinal direction, the pitch of which is 500mm to 1000mm.
The method of claim 15,

The optical cable further comprises an inner jacket between the binding member and the plurality of anti-radiation members.