JP2015233364A - Slow snow accretion tape and slow snow accretion overhead transmission line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to suppress generation of corona discharge caused by a slow snow accretion tape and provide an overhead transmission line with a slow snow accretion tape.SOLUTION: A slow snow accretion tape 11 includes: a tape substrate 13 having water repellency; and an adhesive layer 14 provided on a rear face 13b of the tape substrate 13. The tape substrate 13 includes a cover member 18 for covering end parts in a width direction of the adhesive layer 14.

Description

  The present invention relates to a hard-to-snow tape and a hard-to-snow overhead power transmission line.

  2. Description of the Related Art Conventionally, it is known that a hard-to-fall snow tape provided on an overhead power transmission line is provided with an adhesive layer on a tetrafluoroethylene resin (PTFE) tape or a water-repellent resin tape (for example, a patent) References 1-3). According to these hard-to-attach snow tapes, the adhesion force of snow on the surface of the overhead power transmission line is reduced, and the snow can be dropped before a large amount of snow adheres to the overhead power transmission line.

Japanese Patent Laid-Open No. 2005-117841 JP 2003-141938 A JP 2008-282814 A

However, in the conventional hard-to-snow tape, foreign matter or the like may adhere to the adhesive layer at the end in the width direction of the tape, and corona discharge may occur from the foreign matter as a base point. When corona discharge occurs, the durability of the tape is affected, noise is generated, and there is a problem that it is impossible to provide the hard-to-fall snow tape on the overhead power transmission line.
This invention is made | formed in view of the situation mentioned above, and it aims at suppressing generation | occurrence | production of the corona discharge by a difficult snow accretion tape, and being able to provide a difficult snow accretion tape in an overhead power transmission line. .

In order to achieve the above object, the present invention comprises a tape base material having water repellency and an adhesive layer provided on one surface of the tape base material, the tape base material being an end in the width direction of the adhesive layer. It is characterized by having a cover part which covers a part.
According to the present invention, since the tape base material includes the cover portion that covers the end portion in the width direction of the adhesive layer, the cover portion effectively prevents foreign matters from adhering to the end portion in the width direction of the adhesive layer. it can. For this reason, generation | occurrence | production of the corona discharge by a difficult snowing tape can be suppressed, and a difficult snowing tape can be provided in an overhead power transmission line.

Further, the present invention is characterized in that the covering portion is configured such that the tape base material extends outward in the width direction from the adhesive layer.
According to the present invention, since the cover portion is configured such that the tape base material extends outward in the width direction from the adhesive layer, the cover base member has a simple configuration that extends outward in the width direction from the adhesive layer. It is possible to prevent adhesion of foreign matters or the like to the adhesive layer.
Further, the present invention is characterized in that the cover portion includes a side wall that covers the end surface in the width direction of the adhesive layer from the outside in the width direction.
According to the present invention, the cover portion includes the side wall that covers the end surface in the width direction of the adhesive layer from the outside in the width direction, and thus the foreign material and the like can be prevented from adhering to the end surface in the width direction of the adhesive layer.

Furthermore, the present invention is characterized in that the cover portion includes a wraparound portion that is bent inward in the width direction from the side wall and wraps around the adhesive surface of the adhesive layer.
According to the present invention, the covering portion includes a wraparound portion that bends inward in the width direction from the side wall and wraps around the adhesive surface side of the adhesive layer, thereby preventing foreign matter or the like from adhering to the end portion of the adhesive layer. it can.
Moreover, the present invention is characterized in that the cover part is formed by bending the end part in the width direction of the tape base material integrally with the adhesive layer to bond the adhesive layers together.
According to the present invention, since the cover portion is formed by bending the end portion in the width direction of the tape base material integrally with the adhesive layer and bonding the adhesive layers together, the cover portion can be simply covered simply by bending the tape base material. The part can be formed, and adhesion of foreign matter or the like can be prevented.

Further, the present invention provides a hard-to-snow overhead power transmission line including a hard-to-snow tape that is adhered to the surface of the overhead power transmission line, wherein the hard-to-snow tape has a water-repellent tape base material and the tape base. An adhesive layer provided on one surface of the material, wherein the tape base material includes a cover portion that covers an end portion in the width direction of the adhesive layer.
According to the present invention, the tape base material of the hard-to-snow tape of the hard-to-snow overhead power transmission line includes the cover portion that covers the end portion in the width direction of the adhesive layer. As a result, it is possible to effectively prevent foreign matter and the like from adhering to the end portion in the width direction of the adhesive layer by the cover portion, and it is possible to suppress the occurrence of corona discharge due to the hard-to-fall snow tape. Can be provided.

  In the difficult snowing tape and the difficult snow landing overhead power transmission line according to the present invention, it is possible to suppress the occurrence of corona discharge due to the difficult snowing tape and to provide the difficult snow landing tape on the overhead power transmission line.

It is a figure which shows the state which attached the hard-to-snow accretion tape which concerns on the 1st Embodiment of this invention to the electric wire. It is II-II sectional drawing of FIG. It is sectional drawing which shows the formation method of a difficult snow accretion tape. It is II-II sectional drawing of FIG. 1 in 2nd Embodiment. It is a figure which shows the modification of 2nd Embodiment. It is II-II sectional drawing of FIG. 1 in 3rd Embodiment. It is II-II sectional drawing of FIG. 1 in 4th Embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
FIG. 1 is a diagram showing a state in which a hard-to-snow tape according to the first embodiment of the present invention is attached to an electric wire. 2 is a cross-sectional view taken along the line II-II in FIG.
The hard-to-fall snow power transmission line is formed by sticking the hard-to-snow snowing tape 11 on the outer peripheral surface of the electric wire 10 (overhead power transmission line) installed between the steel towers.
The electric wire 10 includes a core wire (not shown) formed of a steel wire and the like, and a conductor portion 12 formed by spirally twisting a plurality of wires such as an aluminum wire on the outer periphery of the core wire. It is configured in a substantially circular shape. Here, in FIG. 2, illustration of the internal structure of the electric wire 10 is omitted.

  The hard-to-attach snow tape 11 is spirally wound around the outer peripheral surface 12 a of the conductor portion 12 of the electric wire 10 with a predetermined pitch P in the longitudinal direction of the electric wire 10. Thus, by providing the predetermined pitch P, the snow adhering to the electric wire 10 can be divided in the longitudinal direction of the electric wire, the heat radiation of the conductor portion 12 can be ensured, and the amount of use of the hard-to-attach snow tape 11 is also increased. Can be small.

The hard-to-attach snow tape 11 includes a resin tape base material 13 having electrical insulation and water repellency for sliding snow, and an adhesive layer 14 provided on one surface of the tape base material 13.
In the first embodiment, the tape base material 13 is made of PTFE resin (tetrafluoroethylene resin), but may be other resin having water repellency. , Silicone resin, polypropylene, and polyethylene terephthalate.
The adhesive layer 14 is made of, for example, a rubber adhesive, a silicone adhesive, or the like.

FIG. 3 is a cross-sectional view illustrating a method of forming the difficult-to-snow snowing tape 11.
The difficult-to-attach snow tape 11 is formed by bending both ends in the width direction of a flat tape 15 that is flat across the entire width direction.
The flat tape 15 includes the tape base material 13 and the adhesive layer 14 described above. The tape base material 13 is formed in a strip shape having a front surface 13a exposed to the outside and a back surface 13b (one surface) on which the adhesive layer 14 is provided. The adhesive layer 14 is provided with a substantially uniform thickness on the entire back surface 13b. The thickness of the adhesive layer 14 is smaller than the thickness of the tape base material 13.

The hard-to-snow tape 11 includes a bent portion 16 formed by bending both ends of the flat tape 15 in the width direction integrally with the adhesive layer 14 and bonding the adhesive layers 14 together. That is, the bent portion 16 is formed by bending both end portions in the width direction of the flat tape 15 to the adhesive layer 14 side by approximately 180 ° and bonding the adhesive layers 14 together.
The bent portion 16 includes an overlapping portion 17 in which the thickness of the adhesive layer 14 is doubled by bonding and bonding the adhesive layers 14 together, and a cover portion 18 that covers the overlapping portion 17. In the bent part 16, since the tape base material 13 and the adhesive layer 14 are folded together, the thickness of the difficult-to-snow-attached tape 11 is twice that of the part where the bent part 16 is not formed.

The cover portion 18 is configured by an end portion of the tape base material 13. The cover portion 18 includes an extended portion 19 in which the tape base material 13 extends outward in the width direction from the overlapping portion 17, and a width of the outer end surface 17 a of the overlapping portion 17 by bending approximately 90 ° from the end of the extending portion 19. Side wall part 20 (side wall) that covers from the outside in the direction, and a wraparound part 21 that bends approximately 90 ° from the end of the side wall part 20 and goes inward in the width direction of the tape base material 13 to cover the overlapping part 17.
In the hard-to-attach snow tape 11, the outer end 14 a of the adhesive layer 14 in the state of the flat tape 15 is located on the inner side in the width direction than the outer end surface 17 a in the width direction of the overlapping portion 17.
Moreover, the cover part 18 is provided with the curved surface parts 22 and 23 formed by the tape base material 13 bending at the upper end and lower end of the outer end surface.

As shown in FIG. 2, the hard-to-snow tape 11 is attached to the outer peripheral surface 12 a by bonding the adhesive surface 14 b of the adhesive layer 14 to the outer peripheral surface 12 a of the electric wire 10. A portion between the portions 16 and 16 is deformed along the outer peripheral surface 12a and is recessed toward the outer peripheral surface 12a.
In the attached state, the adhesive surface 14b is bonded to the outer peripheral surface 12a, so that the wraparound portion 21 of the cover 18 is in close contact with the outer peripheral surface 12a so as to be pressed against the outer peripheral surface 12a side.

That is, the outer end 14 a in the width direction of the adhesive layer 14 is completely covered and hidden from the side by the cover 18, and the adhesive layer 14 is not exposed to the outside of the hard-to-attach snow-covered tape 11. Thereby, it is possible to prevent foreign matters such as dust from adhering to the outer end 14a of the adhesive layer 14 after attachment, and even if dust or the like adheres to the outer end 14a, the dust is exposed to the outside of the hard-to-attach snow tape 11. Therefore, it is possible to prevent a portion having a high potential gradient from being generated on the surface side of the hard-to-snow tape 11.
Moreover, since the cover part 18 formed by bending is provided with the curved surface parts 22 and 23, an edge is not formed in the edge part of the hard-to-fall snow tape 11, and a potential gradient becomes high in the part of the cover part 18. Can be prevented.
Furthermore, since the hard snow-tape tape 11 includes the side wall portion 20 and the entire surface exposed to the outside including both side surfaces is a surface having water repellency, it is possible to more effectively prevent snow formation.

  When the hard-to-snow tape 11 is attached to the electric wire 10, the distribution of equipotential lines around the hard-to-snow tape 11 changes according to the shape and material of the hard-to-snow tape 11, and the potential gradient is also biased. . In particular, since equipotential lines are dense at the edge portion, the potential gradient is high at the end in the width direction of the hard-to-snow snow tape 11 and corona discharge tends to occur.

The present inventors studied the influence of the adhesion of foreign substances on the disappearance of corona discharge, and obtained knowledge about a configuration that can effectively suppress the occurrence of corona discharge.
The inventors of the present invention applied a voltage to an electric wire provided with a hard-to-snow tape to generate a corona discharge, and the electric wire surface in a state where the corona discharge disappeared and was no longer visible in the process of sequentially reducing the applied voltage of the electric wire. The maximum potential gradient was measured to evaluate the difficulty of corona discharge. Here, the potential gradient when the corona discharge disappears and is no longer visible is called the extinction potential gradient (kV / cm) of the visible corona. That is, it can be said that the higher the extinction potential gradient of the visible corona, the more the corona discharge can be extinguished (not generated) even at a higher potential gradient, and the higher the effect of suppressing the generation of corona discharge.

  As a result, the extinction potential gradient of the visible corona of the electric wire 10 provided with the hard-to-snow tape 11 having the cover 18 was at least 15 (kV / cm) or more. On the other hand, the extinction potential gradient of the visible corona of the electric wire 10 to which the flat tape 15 was attached as it was became 13 (kV / cm) or less. That is, in the configuration that does not include the cover portion 18, since the corona discharge is likely to occur with the foreign matter attached to the outer end 14a of the adhesive layer 14 of the flat tape 15 as a base point, the extinction potential gradient of the visible corona has a small value. . On the other hand, in the hard-to-snow tape 11 provided with the cover part 18, the adhesive layer 14 is not exposed to the outside, and foreign matter is difficult to adhere to the side surface part of the hard-to-snow tape 11. Therefore, a high visible corona extinction potential gradient is obtained. It was. For this reason, generation | occurrence | production of a corona discharge can be prevented effectively in the difficult snow accretion tape 11.

  The electric wire 10 may be provided with a snow-melting ring (not shown) that covers the outer peripheral surface of the hard-to-fall snow tape 11. The snow melting ring generates heat by an alternating magnetic field generated by the current flowing through the electric wire 10 and melts snow adhering to the surface. The extinction potential gradient on the surface of the snow melting ring attached to the electric wire 10 is at least 15 (kV / cm) or more, which is equivalent to the extinction potential gradient of the hard-to-snow-attached tape 11. That is, since the change in the extinction potential gradient of the surface of the electric wire 10 due to the provision of the snow-melting tape 11 and the snow-melting ring is the same, The surface annihilation potential gradient does not decrease. For this reason, both the snow-melting ring and the hard-to-fall snow tape 11 can be installed on the electric wire 10.

As described above, according to the first embodiment to which the present invention is applied, the tape base 13 provided with water repellency and the adhesive layer 14 provided on one surface of the tape base 13 are provided. Since the material 13 includes the cover portions 18 and 18 that cover the end portions in the width direction of the adhesive layer 14, the cover portions 18 and 18 effectively prevent foreign matters and the like from adhering to the end portions in the width direction of the adhesive layer 14. Can be prevented. For this reason, generation | occurrence | production of the corona discharge by the difficult snow accretion tape 11 can be suppressed, and the difficult snow accretion tape 11 can be provided in the electric wire 10. FIG.
Moreover, since the cover parts 18 and 18 are equipped with the side wall parts 20 and 20 which cover the outer end surface 17a of the width direction of the contact bonding layer 14 from the outer side of the width direction, it prevents that a foreign material etc. enter inside the side wall parts 20 and 20. it can. For this reason, it can prevent that a foreign material adheres to the edge part of the contact bonding layer 14. FIG.

Furthermore, since the cover parts 18 and 18 are provided with wraparound parts 21 and 21 that are bent inward in the width direction from the side wall parts 20 and 20 and go around to the adhesive surface 14 b side of the adhesive layer 14, foreign matter or the like is formed at the end part of the adhesive layer 14. Can be prevented by the wraparound portions 21, 21.
Moreover, since the cover parts 18 and 18 are the one where the edge part of the tape base material 13 in the width direction was bend | folded integrally with the adhesive layer 14, and the adhesive layers 14 were adhere | attached, only bending the tape base material 13 is sufficient. The cover portions 18 and 18 can be easily formed and adhesion of foreign matters or the like can be prevented.

[Second Embodiment]
Hereinafter, a second embodiment to which the present invention is applied will be described with reference to FIG. In the second embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

FIG. 4 is a cross-sectional view taken along the line II-II of FIG. 1 in the second embodiment. In FIG. 4, the electric wire 10 is not shown.
As shown in FIG. 4, the hard-to-fall snow tape 111 includes a tape base 113 and an adhesive layer 114. The tape base material 113 is formed in a belt shape having a front surface 113a and a back surface 113b on which the adhesive layer 114 is provided. The adhesive layer 114 is provided with a substantially uniform thickness on the entire back surface 113b. The material of the hard-to-attach snow tape 111 is the same as that in the first embodiment.

The tape base material 113 includes cover portions 118 that cover both end portions in the width direction of the adhesive layer 114 at both ends in the width direction. The cover 118 is provided over the entire length of the tape base 113 in the longitudinal direction.
The cover portion 118 includes an extension portion 119 in which the tape base material 113 extends outward in the width direction from the adhesive layer 114 and a side wall portion 120 (side wall) that extends by bending approximately 90 ° from the end of the extension portion 119. Have.
The adhesive layer 114 is provided over the entire back surface 113 b of the tape base material 113 between the side wall portions 120 and 120.
The height of the side wall part 120 is set so that the lower end 120a of the side wall part 120 is substantially flush with the adhesive surface 114b of the adhesive layer 114, and the end surface 114a in the width direction of the adhesive layer 114 is exposed from the outside by the side wall part 120. Covered.

  The hard-to-attach snow tape 111 is bonded and fixed to the outer peripheral surface 12a by attaching the adhesive surface 114b to the outer peripheral surface 12a (FIG. 2) of the electric wire 10. In a state where the hard-to-attach snow tape 111 is adhered to the outer peripheral surface 12a, the adhesive surface 114b and the lower end 120a of the side wall 120 are substantially flush, and the lower end 120a abuts on the outer peripheral surface 12a or the outer peripheral surface The gap between 12a is extremely small.

That is, in the state attached to the electric wire 10, the end surfaces 114a and 114a in the width direction of the adhesive layer 114 are completely covered and hidden from the side by the side wall portions 120 and 120, and the end surfaces 114a and 114a are exposed to the outside. do not do. Thereby, it is possible to prevent foreign matters such as dust from adhering to the end faces 114a and 114a, and it is possible to prevent the potential gradient from greatly increasing at the portion where the foreign matters are attached.
Moreover, the cover part 118 is formed so that the edge part of the tape base material 113 may be bent, and has the curved surface part 122 in the corner | angular part of an outer end. As a result, there is no edge at the outer end of the cover part 118, so that it is possible to prevent the potential gradient from increasing around the cover part 118.

[Modification]
FIG. 5 is a diagram illustrating a modification of the second embodiment. In FIG. 5, the electric wire 10 is not shown. In this modification, the same components as those in the second embodiment are denoted by the same reference numerals and description thereof is omitted.
As shown in FIG. 5, the cover portion 118 has a wraparound portion 121 that bends approximately 90 ° from the lower end of the side wall portion 120, wraps inward in the width direction of the tape base material 113, and contacts the end surface of the adhesive surface 114 b. .
The hard-to-snow tape 111 is attached to the outer peripheral surface 12a by bonding the adhesive surface 114b to the outer peripheral surface 12a of the electric wire 10, and in this attached state, the covering on the tape base material 113 is the same as in the first embodiment. A portion between the portions 118 and 118 is deformed along the outer peripheral surface 12a and is recessed toward the outer peripheral surface 12a.
In this modified example, since the wraparound portion 121 is in close contact with the outer peripheral surface 12a and closes the gap between the outer peripheral surface 12a and the hard-to-snow-attached tape 111, it is effective that foreign matter or the like adheres to the end portion of the adhesive layer 114. Can be prevented.
Further, since the outer end of the wraparound portion 121 includes the curved surface portion 123, it is possible to prevent the potential gradient from increasing around the wraparound portion 121.

[Third Embodiment]
Hereinafter, a third embodiment to which the present invention is applied will be described with reference to FIG. In the third embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

6 is a cross-sectional view taken along the line II-II of FIG. 1 in the third embodiment. In FIG. 6, the electric wire 10 is not shown.
As shown in FIG. 6, the hard-to-fall snow tape 211 includes a tape base material 213 and an adhesive layer 214. The tape base material 213 is formed in a belt shape having a front surface 213a and a back surface 213b on which the adhesive layer 214 is provided. The adhesive layer 214 is provided on the entire back surface 213b with a substantially uniform thickness. The material of the hard-to-attach snow tape 211 is the same as that in the first embodiment.

The tape base material 213 includes cover portions 218 that cover both end portions in the width direction of the adhesive layer 214 at both ends in the width direction. The cover portion 218 is provided over the entire length of the tape base material 213 in the longitudinal direction.
The cover portion 218 includes an extended portion 219 in which the tape base material 213 extends outward in the width direction from the adhesive layer 214, and a side wall portion 220 (side wall) that protrudes from the lower surface of the extended portion 219 toward the adhesive layer 214. Have The side wall part 220 covers the end surface 214a in the width direction of the adhesive layer 214 from the outside in the width direction.
The side wall part 220 is formed in a substantially circular shape in a cross-sectional view perpendicular to the longitudinal direction of the tape base material 213. That is, the side wall part 220 is formed in a columnar shape extending along both side edges of the tape base material 213 over the entire length of the tape base material 213.

The hard-to-attach snow tape 211 is attached to the outer peripheral surface 12a by bonding the adhesive surface 214b to the outer peripheral surface 12a (FIG. 2) of the electric wire 10. In this attached state, the lower end 220a of the side wall 220 is in close contact with the outer peripheral surface 12a. .
In the third embodiment, by making the side wall portion 220 circular, there is no edge in the cover portion 218, so that the potential gradient around the cover portion 218 can be prevented from increasing.
In FIG. 6, the lower end 220a of the side wall 220 protrudes downward from the adhesive surface 214b of the adhesive layer 214, but the lower end 220a may be substantially flush with the adhesive surface 214b.

[Fourth Embodiment]
A fourth embodiment to which the present invention is applied will be described below with reference to FIG. In the fourth embodiment, parts that are configured in the same manner as in the first embodiment are given the same reference numerals, and descriptions thereof are omitted.

FIG. 7 is a cross-sectional view taken along the line II-II of FIG. 1 in the fourth embodiment.
As shown in FIG. 7, the hard-to-snow tape 311 includes a tape base material 313 and an adhesive layer 314 that are flat across the entire width direction. The tape base material 313 is formed in a strip shape having a front surface 313a exposed to the outside and a back surface 313b on which the adhesive layer 314 is provided. The adhesive layer 314 is provided on the substantially entire back surface 313b with a substantially uniform thickness. The thickness of the adhesive layer 314 is smaller than the thickness of the tape base material 313. The material of the hard-to-attach snow tape 311 is the same as that in the first embodiment.

The tape base material 313 includes cover portions 318 at both ends that are configured such that the tape base material 313 extends outward in the width direction from the end surface 314 a in the width direction of the adhesive layer 314. The cover portion 318 is obtained by extending the end portion of the tape base material 313 provided with the adhesive layer 314 substantially straight outward in the width direction.
The hard-to-attach snow tape 311 is attached to the outer peripheral surface 12a by bonding the adhesive surface 314b of the adhesive layer 314 to the outer peripheral surface 12a of the electric wire 10, and in this attached state, between the cover portion 318 and the outer peripheral surface 12a, A gap S corresponding to the thickness of the adhesive layer 314 is formed. The gap S is smaller than the foreign matter M such as dust that increases the potential gradient. For this reason, the foreign matter M is prevented from entering the gap S, and the foreign matter M is prevented from adhering to the end surface 314a of the adhesive layer 314. For this reason, generation | occurrence | production of the corona discharge by attaching the difficult snow contact tape 311 can be suppressed, and the difficult snow contact tape 311 can be provided in the electric wire 10. FIG.
According to the fourth embodiment, it is possible to prevent adhesion of foreign matters or the like to the end surface 314a of the adhesive layer 314 with a simple configuration in which the tape base material 313 is extended outward in the width direction from the adhesive layer 314.

10 Electric wires (overhead transmission lines)
11, 111, 211, 311 Snow-resistant tape 13, 113, 213, 313 Tape base material 13b, 113b, 213b, 313b Back surface (one surface of tape base material)
14, 114, 214, 314 Adhesive layer 17a Outer end surface (end surface in the width direction of the adhesive layer)
18, 118, 218, 318 Cover part 20, 120, 220 Side wall part (side wall)
21, 121 wraparound portions 114a, 214a, 314a end face (end face in the width direction of the adhesive layer)

Claims (6)

  A tape base material having water repellency and an adhesive layer provided on one surface of the tape base material, wherein the tape base material includes a cover portion covering an end portion in the width direction of the adhesive layer, Hard-to-wear snow tape.   The difficult-to-attach snow tape according to claim 1, wherein the cover portion is configured such that the tape base material extends outward in the width direction from the adhesive layer.   The hard-to-attach snow tape according to claim 1, wherein the cover includes a side wall that covers an end face in the width direction of the adhesive layer from the outside in the width direction.   The difficult-to-attach snow tape according to claim 3, wherein the cover portion includes a wraparound portion that is bent inward in the width direction from the side wall and wraps around the adhesive surface of the adhesive layer.   2. The snow-resisting tape according to claim 1, wherein the cover part is formed by bending an end part in the width direction of the tape base material integrally with the adhesive layer and bonding the adhesive layers together. . In the hard-to-snow overhead power transmission line with the hard-to-snow tape attached to the surface of the overhead power transmission line,
The difficult snow accretion tape includes a tape base material having water repellency and an adhesive layer provided on one surface of the tape base material, and the tape base material covers a width direction end of the adhesive layer. A hard-to-snow overhead power transmission line characterized by comprising a section.

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