JPH04127818A - Device for annexing cable - Google Patents
Device for annexing cableInfo
- Publication number
- JPH04127818A JPH04127818A JP2247162A JP24716290A JPH04127818A JP H04127818 A JPH04127818 A JP H04127818A JP 2247162 A JP2247162 A JP 2247162A JP 24716290 A JP24716290 A JP 24716290A JP H04127818 A JPH04127818 A JP H04127818A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- cable
- clamp
- branch
- electric wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012212 insulator Substances 0.000 claims abstract description 33
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 abstract description 13
- 208000025274 Lightning injury Diseases 0.000 abstract 3
- 230000001939 inductive effect Effects 0.000 abstract 2
- 238000009413 insulation Methods 0.000 description 8
- 230000000452 restraining effect Effects 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、耐雷性能とトラッキング防止性能を向上させ
た＃！縁被被覆電線用付属装置関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention improves lightning resistance and anti-tracking performance. This invention relates to an accessory device for edge-covered electric wires.
（従来技術）
近年の架空電線は危険防止のため従来の裸電線に代え絶
縁被覆層を有する絶縁電線が使用されるようになってき
たが、電線の絶縁化により、雷による高圧電線の断線が
多くなってきている。これは雷閃終が発生した場合に、
裸電線では続流アーク点が電磁力等により移動するのに
対して、絶縁電線では被覆があるのでアーク点が固定さ
れ、絶縁被覆の破壊や電線導体の溶断が起りやすくなる
ためである。(Prior art) In recent years, insulated wires with an insulation coating layer have been used instead of the conventional bare wires for overhead power lines to prevent danger. It's becoming more common. This means that if a thunderbolt occurs,
This is because in bare wires, the follow-on arc point moves due to electromagnetic force, etc., whereas insulated wires have a coating, so the arc point is fixed, making it easy for the insulation coating to break down and the wire conductor to melt.
また、絶縁電線に使われている有機絶縁物の表面に湿潤
や汚染があると、絶縁破壊を起こすことがある。すなわ
ち、このような絶縁物の表面に水分あるいは電解性溶液
が存在すると比較的大きな漏れ電流による温度上昇のた
め、表面抵抗の局所的不整が生じ、ここに放電が起こる
。そのため表面の一部が乾燥し、その際発生するシンチ
レーション（局部的な微小発光放電）の熱によって材料
が部分的に炭化あるいは侵食され、これが逐次進展して
最終的に絶縁破壊に至る。これをトラッキングによる破
壊という。Furthermore, if the surface of the organic insulator used in insulated wires is wet or contaminated, dielectric breakdown may occur. That is, when moisture or electrolytic solution is present on the surface of such an insulator, a relatively large leakage current causes a temperature rise, resulting in local irregularities in surface resistance, and discharge occurs here. As a result, a portion of the surface dries, and the material is partially carbonized or eroded by the heat of the scintillation (local minute luminescent discharge) that occurs, and this progresses gradually, eventually leading to dielectric breakdown. This is called destruction by tracking.
さらに、絶縁電線では電線接続部や引留め個所等の絶縁
被覆剥離部から雨水等の浸入があると、それによって応
力腐食割れが起り、電線導体が異常断線する事故が発生
することがあり、絶縁電線の電線接続や引留め個所等に
は充分な水密性能が要求される。Furthermore, if rainwater or other intrusion of insulated wires occurs through peeled-off insulation coatings such as wire connections or tie-down points, stress corrosion cracking may occur, which may lead to abnormal disconnection of the wire conductor. Sufficient watertight performance is required for electrical wire connections and tie-down points.
（発明が解決しようとする課題）
上述したように絶縁被覆電線の支持点近傍線路では、１
）雷、２）トラッキング、３）応力腐食割れ、の３点の
重要な問題がある。ここでは、絶縁被覆電線の支持点近
傍線路を落雷や誘導雷から保護すると共に電線のトラッ
キングを防止し、さらには応力腐食割れをも防止しうる
電線付属装置を、特に構造的にも簡明で経済的なものと
して提供することを目的とする。(Problem to be solved by the invention) As mentioned above, in the line near the support point of the insulated wire, 1
There are three important issues: ) lightning, 2) tracking, and 3) stress corrosion cracking. Here, we will introduce a wire attachment device that protects the line near the supporting point of the insulated wire from lightning strikes and induced lightning, prevents tracking of the wire, and also prevents stress corrosion cracking.It is particularly structurally simple and economical. The purpose is to provide it as a
（課題を解決するための手段）
絶縁被覆電線の支持点付近より分岐線を取り出し、該分
岐線を電線クランプまたは電線側碍子金具に接続し、電
線導体と電線クランプおよび電線側碍子金具とを電気的
に導通させた。(Means for solving the problem) Take out a branch wire from near the support point of the insulated wire, connect the branch wire to a wire clamp or wire side insulator metal fitting, and connect the wire conductor, wire clamp, and wire side insulator metal fitting to each other. It was made conductive.
又クランプ本体に電線を把持させ、該電線の絶縁被覆を
貫通する導通体によって電線の導体とクランプ部材を電
気的に導通するようにした。Further, the clamp body grips the electric wire, and the conductor of the electric wire and the clamp member are electrically connected to each other by a conductor that penetrates the insulating coating of the electric wire.
（実施例） 図に基いて説明する。第１図で１は電線である。(Example) This will be explained based on the diagram. In Fig. 1, 1 is an electric wire.
電線１は引留クランプ２に支持されている。３は引留ク
ランプ２の近傍に取付けた分岐コネクタである。分岐コ
ネクタ３より分岐した分岐線４を碍子５の電線側碍子金
具と接続する。第２図と第３図で６は碍子５に取付けた
アークホーンである。The electric wire 1 is supported by a retaining clamp 2. 3 is a branch connector attached near the retaining clamp 2. A branch line 4 branched from a branch connector 3 is connected to an insulator metal fitting on the wire side of an insulator 5. In FIGS. 2 and 3, 6 is an arc horn attached to the insulator 5.
ここでの引留クランプ２はくさびの歯状突部が電線の絶
縁被覆を破って心線を常に安定して把持できる水密構造
となっている。The retaining clamp 2 here has a watertight structure in which the tooth-like protrusions of the wedge break the insulation coating of the electric wire and can always stably grip the core wire.
３の分岐コネクタ（第５図）は例えば実公昭６３−３１
３３７号に開示されたものを使用することができる。な
おこのコネクタは＃！縁被被覆つき破り電線の心線に達
するカットスルーを有していて、電気的導通をうろこと
ができるもので、絶縁・水密化のようなあと処置はしな
いで済み、このコネクタを使えば、皮むきや圧縮などの
作業がなく、作業が非常に簡単である。For example, the branch connector No. 3 (Fig. 5)
337 can be used. This connector is #! It has a cut-through that reaches the core of the torn electric wire with edge sheathing, allowing electrical continuity, and there is no need for post-treatment such as insulation or watertightness.If you use this connector, It is very easy to work with, as there is no need for peeling or compression.
碍子５は引留クランプ２の端部に取付けられていて、電
線側碍子金具５ａと対地側碍子金具５ｂにはさまれた構
造となっている。The insulator 5 is attached to the end of the retaining clamp 2, and is sandwiched between an electric wire side insulator fitting 5a and a ground side insulator fitting 5b.
碍子５は第１図の場合は耐張碍子型であるが、第２図の
場合では懸垂碍子型、さらに第３図の場合はＬＰ碍子型
となっている。The insulator 5 is a tension-resistant insulator type in the case of FIG. 1, a suspended insulator type in the case of FIG. 2, and an LP insulator type in the case of FIG.
第４図は第１Ｎ〜第３図の実施例の如く分岐コネクタ３
を使用しない実施例で、Ｉｋ＠縁被覆電ＩＩＩの被覆を
むき、この部分でＣ型スリーブ７によって分岐線４を接
続する。接続後は絶縁水密処理８を施す必要がある。９
は分岐線４の碍子側接続部で、端子又はねじ等で接続さ
れる。Figure 4 shows the branch connector 3 as in the embodiments of Figures 1N to 3.
In this embodiment, the Ik@edge covering conductor III is stripped, and the branch line 4 is connected by the C-shaped sleeve 7 at this part. After connection, it is necessary to perform insulation watertight treatment 8. 9
is a connection part on the insulator side of the branch line 4, and is connected with a terminal or a screw.
（他の実施例）
第６図及び第７ｖ！Ｊは懸垂型電線クランプを利用した
例である。１０はクランプ本体、１１はクランプ本体１
０と共働する抑え部材で、両者で電線１２がクランプさ
れる。１３はクランプ本体１゜と抑え部材１１を締めっ
けるボルトである。(Other Examples) Figures 6 and 7v! J is an example using a suspended electric wire clamp. 10 is the clamp body, 11 is the clamp body 1
0 and the electric wire 12 is clamped by both members. Numeral 13 is a bolt that fastens the clamp body 1° and the restraining member 11.
１４は電線被覆（絶縁体）、１５はゴム製の被覆保護カ
ラーである。被覆保護カラー１５は第８図及び第９図に
示す如く２つ割りになっており、ＡＢＳ樹脂等で成形さ
れている。前記電線１２は被覆１４の上から、さらに被
覆保護カラー１５を介しクランプ本体１ｏと抑え部材１
１とで把持されている。14 is a wire covering (insulator), and 15 is a covering protection collar made of rubber. The cover protection collar 15 is divided into two parts as shown in FIGS. 8 and 9, and is molded from ABS resin or the like. The electric wire 12 is connected to the clamp body 1o and the restraining member 1 from above the sheath 14 through the sheath protection collar 15.
It is held with 1.
１６（第１２図）は固定用ボルトでクランプ本体と電線
導体を同電位化する導通体としての導通針１８を挿し込
む孔１６ａを有し、かつ締付用ボルト１７をねじ込むね
じ部１６ｂを備えている。締付用ボルト１７の先端部に
は導通針１８を挿入する孔１７ａが設けられている。導
通針１８の先端は前記被覆保護カラー１５を貫通し、さ
らに電線被覆１４をも貫通して電線１２の導体に接して
いる。16 (FIG. 12) has a hole 16a into which a conductive needle 18 is inserted as a conductor for bringing the clamp body and the wire conductor to the same potential with a fixing bolt, and a threaded portion 16b into which a tightening bolt 17 is screwed. ing. A hole 17a into which the conductive needle 18 is inserted is provided at the tip of the tightening bolt 17. The tip of the conductive needle 18 passes through the protective collar 15 and also through the wire sheath 14 to contact the conductor of the wire 12.
電線１２と電線把持部である抑え部材１１が導通針１８
で導通され、電線と把持部が常に同電位となる。なお抑
え部材１１はなくてもよく、この場合にはクランプ本体
１０で電線１２を懸吊支持し、ボルト１３で電線の上方
への移動を防ぐようにルたものでもよい。又被覆保護カ
ラー１５も必ずしも必要としない。The electric wire 12 and the holding member 11 which is the electric wire gripping part are connected to the conductive needle 18
The electric wire and the grip are always at the same potential. Note that the restraining member 11 may be omitted; in this case, the electric wire 12 may be suspended and supported by the clamp body 10, and the electric wire 12 may be secured with a bolt 13 to prevent the electric wire from moving upward. Further, the covering protective collar 15 is not necessarily required.
第８図は耐張クランプの例である。これは特公昭６０−
５６０４７号に開示されている引留クランプを利用した
ものである。FIG. 8 is an example of a tension clamp. This is the special public service from 1986-
This utilizes the retaining clamp disclosed in No. 56047.
これは第１３図に示す如く、引留碍子に直接連結しうる
クランプ本体１９と共働して電線２ｏを挟む抑え部２１
と、クランプ本体１９及び抑え部２１の内側に設けられ
、電線２０の被覆を破って導体心線に係合しうる歯状突
部２２を有する金属製くさび２３とクランプ本体１９と
くさび２３または抑え部２１とくさび２３の間に介在す
る絶縁カラー２３ａと、抑え部２１を本体１９に押付け
る締付ボルト２４とを備える引留クランプであり、締付
ボルト２４の締付けに際し締付けを規制する調節可能な
ストッパ２５を設けである。As shown in FIG. 13, this includes a restraining part 21 that clamps the electric wire 2o in cooperation with a clamp body 19 that can be directly connected to the retaining insulator.
and a metal wedge 23 that is provided inside the clamp body 19 and the restraining part 21 and has a tooth-shaped protrusion 22 that can break the coating of the electric wire 20 and engage with the conductor core wire, and the clamp body 19 and the wedge 23 or the restraining part. The retaining clamp includes an insulating collar 23a interposed between the portion 21 and the wedge 23, and a tightening bolt 24 that presses the restraining portion 21 against the main body 19. A stopper 25 is provided.
以上の構成において介在する絶縁カラー２３ａをなくす
るかまたは導電性のものとすれば、金属製くさび２３の
歯状突部２２によってクランプ本体１９または抑え部２
１と電線導体が電気的に導通し同電位となる。In the above configuration, if the intervening insulating collar 23a is eliminated or made conductive, the tooth-like protrusion 22 of the metal wedge 23 can be used to prevent the clamp body 19 or the restraining part 2
1 and the wire conductor are electrically connected and have the same potential.
（効果）
絶縁被覆電線の導体と電線クランプ又は電線側碍子金具
とを電気的に接続したので、線路に落雷或いは誘導雷が
発生した場合、雷サージによる短絡電流が分岐線を通り
、碍子金具間を走り、そこからアース側へ逃げることに
なり、電線やクランプを損傷することがなくなり、線路
を保護することが可能である。(Effect) Since the conductor of the insulated wire is electrically connected to the wire clamp or the insulator metal fitting on the wire side, in the event of a lightning strike or induced lightning on the line, the short-circuit current due to the lightning surge will pass through the branch line, and the insulator metal fitting will The wires run through the ground and escape from there to the ground side, which prevents damage to the wires and clamps and protects the lines.
その上、第２図及び第３図の如くアークホーンをとりつ
ければ碍子金具間での雷サージによる閃絡や放電が一層
効果的に行なわれ、碍子の破損や電線の溶断を防止でき
る。Furthermore, if an arc horn is attached as shown in FIGS. 2 and 3, flashovers and discharges due to lightning surges between the insulator fittings will be more effectively carried out, and damage to the insulators and melting of the wires can be prevented.
また、閃絡時に断線に至らぬまでも、被覆の小さな穴（
ピンホール）も発生することがよくあるが、それがなく
なるので電線の水密性も維持され、ひいては応力腐食も
防ぐことができる。In addition, even if the wire does not break during a flash fault, small holes in the insulation (
Pinholes (pinholes) often occur, but since these are eliminated, the watertightness of the wire is maintained, and stress corrosion can also be prevented.
さらに塩害地区等に於いて特に問題となっているトラッ
キング現象は電線と引留部分とが同電位となり、絶縁物
表面の電位差の問題がなくなり漏洩電流が発生しないの
でその防止に有効である。Furthermore, the tracking phenomenon, which is a particular problem in salt-damaged areas, is effectively prevented because the electric wire and the anchoring part are at the same potential, eliminating the problem of potential difference on the surface of the insulator, and no leakage current occurs.
クランプ本体に電線を把持させ、電線の絶縁被覆を貫通
する導通体によって電線の導体とクランプ部材を同型位
置に保持するようにした装置では、特別な装置、たとえ
ばコネクタ、接続部材などが必要なく、今までのクラン
プの一部を改良すれば即実施でき、コンパクトかつ安価
である。またその効果も分岐線を使用するタイプと同等
である。With a device in which the wire is gripped by the clamp body and the conductor of the wire and the clamp member are held in the same position by a conductor that penetrates the insulation coating of the wire, special devices such as connectors and connecting members are not required. It can be implemented immediately by improving some of the existing clamps, and is compact and inexpensive. The effect is also equivalent to the type that uses branch lines.
第１図は本発明の第１実施例。
第２図は同じく第２実施例。
第３図は同じく第３実施例。
第４図はコネクタを使用しない場合の実施例。
第５図は分岐線を分岐させる為の分岐コネクタの斜視図
である。
第６図は本発明を実施した懸垂クランプ。
第７図は第６図の右側面図。
第８図は被覆保護カラーの平面図。
第９図は同じく正面図。
第１０図は締付用ボルト。
第１１図は固定用ボルト。
第１２図は導通針。
第１３図は本発明を実施した耐張クランプを示す６
図において；
１ 電線 ２ 引留クランプ３ 分岐コネク
タ ４ 分岐線
５ 碍子 ６ アークホーン５ａ （電線
側）碍子金具ｓｂ （対地側）碍子金具７ Ｃ型スリ
ーブ ８ 絶縁水密処理９ （分岐線の）接続部
１０ クランプ本体 １１ 抑え部材１２ 電
線 １３ ボルト１４ 電線被覆
１５ 被覆保護カラー１６ 固定用ボルト １
６ａ 孔１６ｂ ねじ部 １７ 締付用
ボルト１７ａ 孔 １８ 導通針クラ
ンプ本体 ２０ 電線
抑え部 ２２ 歯状突部
くさび ２３ａ カラー
締付ボルト ２５ ストッパ
以上
出願人 財団法人鉄道総合技術研究所（外１名）代理人
弁理士 大 橋 勇
第３図
第４図
第５図
第１２図
第８図FIG. 1 shows a first embodiment of the present invention. FIG. 2 also shows the second embodiment. FIG. 3 also shows the third embodiment. Figure 4 shows an example in which no connector is used. FIG. 5 is a perspective view of a branch connector for branching the branch line. FIG. 6 shows a suspension clamp embodying the present invention. FIG. 7 is a right side view of FIG. 6. FIG. 8 is a plan view of the protective collar. Figure 9 is also a front view. Figure 10 shows the tightening bolt. Figure 11 shows the fixing bolt. Figure 12 shows the conduction needle. FIG. 13 shows a tension clamp according to the present invention. 1 Electric wire 2 Detention clamp 3 Branch connector 4 Branch wire 5 Insulator 6 Arc horn 5a (Wire side) Insulator metal fitting sb (Ground side) Insulator metal fitting 7 C Type sleeve 8 Insulating watertight treatment 9 (branch line) connection part 10 Clamp body 11 Holding member 12 Electric wire 13 Bolt 14 Electric wire coating
15 Cover protection collar 16 Fixing bolt 1
6a Hole 16b Threaded portion 17 Tightening bolt 17a Hole 18 Conductive needle clamp body 20 Wire holding portion 22 Toothed protrusion wedge 23a Collar tightening bolt 25 Stopper and above Applicant: Railway Technology Research Institute (one other person) representative Isamu Ohashi, Patent Attorney Figure 3 Figure 4 Figure 5 Figure 12 Figure 8
Claims (4)
、該分岐線を電線クランプまたは電線側碍子金具に接続
し、電線導体と電線クランプおよび電線側碍子金具とを
電気的に導通させたことを特徴とする電線付属装置。(1) A branch wire is taken out from near the support point of the insulated wire, and the branch wire is connected to a wire clamp or an insulator fitting on the wire side, and electrical continuity is established between the wire conductor, the wire clamp, and the insulator fitting on the wire side. An electric wire accessory device featuring:
項第１項記載の電線付属装置。(2) The wire attachment device according to claim 1, wherein a branch connector is used to take out the branch wire.
覆を貫通する導通体によって電線の導体とクランプ部材
を電気的に導通させたことを特徴とする電線付属装置。(3) An electric wire attachment device characterized in that a clamp body grips an electric wire, and the conductor of the electric wire and the clamp member are electrically connected to each other by a conductor that penetrates the insulating coating of the electric wire.
を設けた請求項第１項及び第３項記載の電線付属装置。(4) The electric wire accessory device according to claim 1 or 3, wherein an arc horn is provided on the electric wire side insulator fitting and the ground side insulator fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02247162A JP3087180B2 (en) | 1990-09-19 | 1990-09-19 | Overhead wire attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP02247162A JP3087180B2 (en) | 1990-09-19 | 1990-09-19 | Overhead wire attachment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04127818A true JPH04127818A (en) | 1992-04-28 |
| JP3087180B2 JP3087180B2 (en) | 2000-09-11 |
Family
ID=17159363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP02247162A Expired - Lifetime JP3087180B2 (en) | 1990-09-19 | 1990-09-19 | Overhead wire attachment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3087180B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738744A (en) * | 2011-04-07 | 2012-10-17 | 固力发集团有限公司 | Multifunctional pressing line cover |
| JP2014057416A (en) * | 2012-09-12 | 2014-03-27 | Chugoku Electric Power Co Inc:The | Connector for drop wire |
| JP2018064418A (en) * | 2016-10-14 | 2018-04-19 | 中国電力株式会社 | Jig for branching overhead line and device for branching overhead line including the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197111A (en) * | 1984-03-19 | 1985-10-05 | 古河電気工業株式会社 | Wire holder |
| JPS60152225U (en) * | 1984-03-21 | 1985-10-09 | 日本碍子株式会社 | Lightning disconnection prevention device |
| JPS61138327U (en) * | 1984-10-12 | 1986-08-27 | ||
| JPS62120216U (en) * | 1986-01-21 | 1987-07-30 |
-
1990
- 1990-09-19 JP JP02247162A patent/JP3087180B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60197111A (en) * | 1984-03-19 | 1985-10-05 | 古河電気工業株式会社 | Wire holder |
| JPS60152225U (en) * | 1984-03-21 | 1985-10-09 | 日本碍子株式会社 | Lightning disconnection prevention device |
| JPS61138327U (en) * | 1984-10-12 | 1986-08-27 | ||
| JPS62120216U (en) * | 1986-01-21 | 1987-07-30 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738744A (en) * | 2011-04-07 | 2012-10-17 | 固力发集团有限公司 | Multifunctional pressing line cover |
| JP2014057416A (en) * | 2012-09-12 | 2014-03-27 | Chugoku Electric Power Co Inc:The | Connector for drop wire |
| JP2018064418A (en) * | 2016-10-14 | 2018-04-19 | 中国電力株式会社 | Jig for branching overhead line and device for branching overhead line including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3087180B2 (en) | 2000-09-11 |
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