JPS63232221A - Pin construction of suspension insulator with lightning arresting function - Google Patents
Pin construction of suspension insulator with lightning arresting functionInfo
- Publication number
- JPS63232221A JPS63232221A JP6728287A JP6728287A JPS63232221A JP S63232221 A JPS63232221 A JP S63232221A JP 6728287 A JP6728287 A JP 6728287A JP 6728287 A JP6728287 A JP 6728287A JP S63232221 A JPS63232221 A JP S63232221A
- Authority
- JP
- Japan
- Prior art keywords
- fitting
- lightning
- current limiting
- limiting element
- pin
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims description 22
- 239000000725 suspension Substances 0.000 title claims description 12
- 238000010276 construction Methods 0.000 title 1
- 239000004020 conductor Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
本発明は送電線に雷サージによる高電圧が印加され、過
大な電流が流れたとき、それを速やかに大地に放電する
とともに、その後生じる続流を遮断し地絡事故を防止す
る避雷機能を備えた１び垂碍子のピン構造に関するもの
である。[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention provides a method for quickly discharging the current to the ground when a high voltage due to a lightning surge is applied to a power transmission line and an excessive current flows. This invention relates to a single insulator pin structure that has a lightning protection function that blocks subsequent currents and prevents ground faults.
（従来の技術）
従来、雷、開閉サージを吸収し送電線地格下数を防止す
るために送電線路に避雷器を導入することが考えられて
いた。しかし、単に避雷機能のみを持つＭ雷器を送電線
路に取付けることは送電線鉄塔構造及び碍子装置等が複
雑になり好ましくない。このため、従来の碍子の絶縁・
電線支持機能と避雷器の避雷機能を兼ね備えた：懸垂型
避雷碍子が提案されている（例えば、特開昭５５−３２
３０８号公報）。(Prior Art) Conventionally, it has been considered to introduce lightning arresters to power transmission lines in order to absorb lightning and switching surges and prevent power transmission lines from falling below ground level. However, it is not preferable to attach an M lightning device that only has a lightning protection function to a power transmission line because it complicates the structure of the transmission line tower, the insulator device, etc. For this reason, conventional insulator insulation and
A suspension type lightning arrester has been proposed that combines the wire support function and the lightning protection function of a lightning arrester (for example, Japanese Patent Laid-Open No. 55-32
Publication No. 308).
この避雷碍子は碍子本体の筒部に一体的に電圧−電流特
性が非直線性の限流素子が内蔵され、同限流素子の上面
及び下面にそれぞれ上部電鴇及び下部電極が取着され、
上部電極とキャップ金具、下部電極とピン金具とがそれ
ぞれリード線によって接続されたものであった。This lightning arrester has a current limiting element with non-linear voltage-current characteristics built into the cylindrical part of the insulator body, and an upper electrode and a lower electrode are attached to the upper and lower surfaces of the current limiting element, respectively.
The upper electrode and the cap metal fitting, and the lower electrode and the pin metal fitting were connected by lead wires.
従って、雷サージによる過大電流はピン金具からリード
線、下部電極、限流素子、上部電極、リード線を経てキ
ャンプ金具へと流れていた。Therefore, the excessive current caused by the lightning surge flows from the pin fitting to the camping fitting via the lead wire, the lower electrode, the current limiting element, the upper electrode, and the lead wire.
（発明が解決しようとする問題点）
上記従来技術においては、限流素子の劣化等によって遮
断不能になりリード線が溶断してアークが吹き出したと
き、それが碍子本体の下面に沿って流れるので、その部
分が局部的に加熱され碍子本体が破壊に至る恐れがあっ
た。(Problems to be Solved by the Invention) In the above-mentioned conventional technology, when the current limiting element becomes incapable of breaking due to deterioration or the like and the lead wire melts and an arc blows out, the arc flows along the lower surface of the insulator body. , there was a risk that that part would be locally heated and the insulator itself could be destroyed.
発明の構成
（問題点を解決するための手段）
本発明は前記問題点を解決するため、碍子本体の筒部の
中央上部に形成した有蓋円筒状の頭部に対し、キャップ
金具を嵌合固定し、前記頭部の内部にピン金具を嵌入固
定し、前記筒部には限流素子を埋設して、その上下両端
部に上部電極及び下部電極を設けたで平型避雷碍子にお
いて、前記ピン金具から一体的に舌片状の端子を斜め下
方へ突設し、同端子と前記限流素子とをリード導体によ
り接続という構成を採用している。Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a method in which a cap metal fitting is fitted and fixed to a capped cylindrical head formed at the upper center of a cylindrical portion of an insulator body. and a flat lightning arrester in which a pin fitting is fitted and fixed inside the head, a current limiting element is embedded in the cylindrical part, and an upper electrode and a lower electrode are provided at both upper and lower ends of the flat lightning arrester; A configuration is adopted in which a tongue-shaped terminal is integrally provided from the metal fitting and protrudes diagonally downward, and the terminal and the current limiting element are connected by a lead conductor.
（作用）
上記構成を採用したことにより、雷サージによる過大電
流はピン金具、舌片状の端子を経て流れるが、限流素子
において遮断不能となって続流が流れたとき、発生する
アークは笠部下面と同筒部の下に連結された懸垂碍子の
筒部の上面との中間部の方向に向いている舌片状の端子
から吹き出すので、筒部の局部的加熱がほとんどな（、
破ｍに至ることがない。(Function) By adopting the above configuration, excessive current due to lightning surge flows through the pin metal fitting and tongue-shaped terminal, but when the current limiting element is unable to interrupt and a follow-on current flows, the arc that occurs is Since the air is blown out from the tongue-shaped terminal that points in the direction between the lower surface of the cap and the upper surface of the cylindrical part of the suspension insulator connected under the same cylindrical part, there is almost no local heating of the cylindrical part.
It will not lead to rupture.
（実施例）
以下、本発明を具体化した一実施例を図面に従って説明
する。(Example) An example embodying the present invention will be described below with reference to the drawings.
第４図に示すように、鉄塔（図示しない）に設けられた
支持アーム１に吊下金具２を介してに垂碍子３が多数直
列に連結垂下され、同懸垂碍子３の最下端には吊下金具
４を介して送電線りが支持されている。As shown in FIG. 4, a large number of suspension insulators 3 are connected and suspended in series from a support arm 1 provided on a steel tower (not shown) via suspension fittings 2, and the lowest end of each suspension insulator 3 is suspended from a support arm 1 provided on a steel tower (not shown). A power transmission line is supported via the lower metal fitting 4.
第１図に示すように、慧垂碍子３を構成する碍子本体５
は筒部５ａと、同筒部５ａの内側面に円環状に、かつ同
心状に形成された複数のひだ部５ｂと、さらに、前記筒
部５ａの中央上部に一体形成された有蓋円筒状の頭部５
ｃとにより一体成型されている。また、同頭部５ｃの外
周にはセメント６によりキャップ金具７が被冠固定され
、同金具７には係合凹部７ａが形成され、直上の避雷碍
子３のピン金具８を係合し得るようにしている。As shown in FIG.
A cylindrical portion 5a, a plurality of folds 5b formed annularly and concentrically on the inner surface of the cylindrical portion 5a, and a covered cylindrical portion integrally formed at the upper center of the cylindrical portion 5a. Head 5
It is integrally molded with c. A cap fitting 7 is fixed to the outer periphery of the head 5c with cement 6, and an engagement recess 7a is formed in the cap fitting 7 so that the pin fitting 8 of the lightning arrester 3 directly above can be engaged with the cap fitting 7. I have to.
ピン金具８の上部は前記頭部５ｃの内部にセメント６に
より固定され、下端は直下の避雷碍子３の前記キャップ
金具７の係合凹部７ａに係合されている。このようにし
て複数の避雷碍子３が直列に連結されている。The upper part of the pin fitting 8 is fixed inside the head 5c with cement 6, and the lower end is engaged with the engaging recess 7a of the cap fitting 7 of the lightning arrester 3 directly below. In this way, a plurality of lightning arresters 3 are connected in series.
前記筒部５ａには円筒状をなす複数（本実施例では２箇
所）の取付筒部５ｄが等間隔に、かつピン金具８と平行
状に同筒部５ａを貫通するように形成されている。The cylindrical portion 5a has a plurality of cylindrical mounting portions 5d (two in this embodiment) formed at equal intervals and passing through the cylindrical portion 5a in parallel with the pin fittings 8. .
前記各取付筒部５ｄの内周面、つまり貫通穴５ｅには酸
化亜鉛（ＺｎＯ）を主材とした続流遮断特性に優れた電
圧−電流特性が非直線性の円柱状をなす複数（本実施例
では２１［！ａ）の限流素子９が直列に嵌入されている
。そして、同限流素子９の外周部と前記取付筒部５ｄの
内周面との間にはシリコンゴムや低融点ガラスが充填さ
れた接着層１０が設けられ、限流素子９を取付筒部５ｄ
に固着している。The inner circumferential surface of each of the mounting cylinders 5d, that is, the through hole 5e, is provided with a plurality of cylindrical materials (main material) made of zinc oxide (ZnO) as a main material and having non-linear voltage-current characteristics and excellent follow-on current blocking characteristics. In the embodiment, 21 [!a) current limiting elements 9 are inserted in series. An adhesive layer 10 filled with silicone rubber or low melting point glass is provided between the outer circumference of the current limiting element 9 and the inner circumferential surface of the mounting cylinder 5d, and the current limiting element 9 is attached to the mounting cylinder. 5d
It is stuck to.
前記取付筒部５ｄの上下両端部にはキャップ状の上部電
極１２及び下部電極１３が半田１４を介して嵌合され、
取付筒部５ｄの上下両端部にカシメ付けされている。A cap-shaped upper electrode 12 and a lower electrode 13 are fitted to both upper and lower ends of the mounting cylinder portion 5d via solder 14,
Both upper and lower ends of the mounting cylinder portion 5d are caulked.
前記限流素子９の上下両端面にはメタリコン、銀焼付そ
の他の方法により金属化処理層１５が設けられている。A metallized layer 15 is provided on both upper and lower end surfaces of the current limiting element 9 by metallization, silver baking, or other methods.
その金属化処理ＪＷ１５の表面には金属製で薄板状の導
通用保護板１６が設けられている。この導通用保護板１
６と前記上下電極１２゜１３との間には導電性及び熱伝
導性を有する押圧バネ１７が介在され、限流素子９と上
部電極１２及び下部電極１３との電気的接続を行うよう
にしている。また、上下両型＋ｆｆ１１２．１３の内側
空間にはゴム状接着性弾性体１８が封入され、接着シー
ル面を増加することにより気密性を向上している。A thin metal conduction protection plate 16 is provided on the surface of the metallized JW 15. This continuity protection plate 1
A pressure spring 17 having electrical conductivity and thermal conductivity is interposed between the current limiting element 9 and the upper and lower electrodes 12 and 13 to electrically connect the current limiting element 9 to the upper electrode 12 and the lower electrode 13. There is. Further, a rubber-like adhesive elastic body 18 is sealed in the inner space of both the upper and lower molds +ff112.13, and airtightness is improved by increasing the adhesive sealing surface.
前記上部電極１２の上面には薄い銅板製のリード導体１
９の一端が接着固定され、同リード導体１９の他端はキ
ャップ金具７に対し一体に突出形成された端子Ｆｊ、２
２にリベットによって接合されている。また、前記下部
電極１３の下面には上記リード導体１９と同じく薄い銅
板製のリード導体２０の一端が接着固定され、同リード
導体２０の他端は前記ピン金具８に一体形成された舌片
状の端子２１に同じ（リベットによって接合されている
。A lead conductor 1 made of a thin copper plate is provided on the upper surface of the upper electrode 12.
One end of the lead conductor 19 is fixed with adhesive, and the other end of the lead conductor 19 is connected to a terminal Fj, 2 integrally formed to protrude from the cap fitting 7.
2 are joined by rivets. Further, one end of a lead conductor 20 made of a thin copper plate is adhesively fixed to the lower surface of the lower electrode 13, similar to the lead conductor 19, and the other end of the lead conductor 20 has a tongue-like shape integrally formed with the pin fitting 8. Same as terminal 21 (joined with rivets).
上記舌片状の端子２１は第２図に示すように、ピン金具
８の中央やや下部から斜め下方へ向かって左右対称位置
に突設されている。そして、第３図に示すように同端子
２１の先端部にはリベットを挿通するための穴２１ａが
設けられている。As shown in FIG. 2, the tongue-shaped terminals 21 project obliquely downward from a slightly lower center of the pin fitting 8 in symmetrical positions. As shown in FIG. 3, a hole 21a for inserting a rivet is provided at the tip of the terminal 21.
次に、以上のように構成された実施例について作用及び
効果を説明する。Next, the functions and effects of the embodiment configured as described above will be explained.
送電線りに雷サージによる過大電圧が印加されると、こ
のときの電流は吊下金具４を経て最下側の避雷碍子３の
ピン金具８へ流れ、舌片状の端子２１−リード導体２〇
−下部電極１３−■流素子９−上部電極１２−リード導
体１９一端子板２２−キャップ金具７へと伝達される。When excessive voltage is applied to the power transmission line due to a lightning surge, the current flows through the suspension fitting 4 to the pin fitting 8 of the lowermost lightning arrester 3, and connects the tongue-shaped terminal 21 to the lead conductor 2. It is transmitted to 〇-lower electrode 13-■flow element 9-upper electrode 12-lead conductor 19-terminal plate 22-cap fitting 7.
その後、直上の避雷碍子３のピン金具８へ伝達される。Thereafter, it is transmitted to the pin fitting 8 of the lightning arrester 3 directly above.
同様に複数直列に連結された避雷碍子３に伝達され、最
上端の避雷碍子３のキャップ金具７から吊下金具２及び
支持アーム１を経て大地へアースされる。Similarly, it is transmitted to a plurality of lightning arresters 3 connected in series, and is grounded from the cap fitting 7 of the uppermost lightning arrester 3 to the ground via the hanging fitting 2 and the support arm 1.
このとき、碍子本体５に内蔵された限流素子９はその特
性により速やかに抵抗値を減じて雷サージによる大電流
を放電させる。また、前記雷サージに′４ｒ！続する続
流に対しては限流素子９は直ちに抵抗値を復元して絶縁
を回復するので、続流放電は抑制遮断されて電線路は正
常に復帰する。At this time, the current limiting element 9 built into the insulator body 5 quickly reduces the resistance value due to its characteristics and discharges the large current caused by the lightning surge. Also, '4r!' for the lightning surge! In response to the subsequent follow-on current, the current limiting element 9 immediately restores the resistance value and restores the insulation, so that the follow-on discharge is suppressed and interrupted, and the electric line returns to normal.
ところが、限流素子９の劣化等により遮断不能となって
続流が流れた場合、リード導体２０が瞬時に溶断しアー
クが吹き出す。この場合舌片状の端子２１は前記のよう
に斜め下方を向いており、しかもその方間は筒部５ａの
下面及び同筒部５ａの下に連結された懸垂碍子３の筒部
５ａの上面に当たらず、その中間を向いているので、ア
ークは筒部５ａの下面及び上面のいずれにも当たること
がない。従って、碍子本体５が局部的に加熱され破損に
至るということがない。However, if the current limiting element 9 becomes unable to shut off due to deterioration or the like and a follow-on current flows, the lead conductor 20 instantly melts and an arc blows out. In this case, the tongue-shaped terminal 21 faces obliquely downward as described above, and the direction is the lower surface of the cylindrical portion 5a and the upper surface of the cylindrical portion 5a of the suspension insulator 3 connected below the cylindrical portion 5a. The arc does not hit either the lower surface or the upper surface of the cylindrical portion 5a because it is directed toward the middle. Therefore, the insulator body 5 will not be locally heated and damaged.
なお、本実施例においてはキャンプ金具７の下部に斜め
下方に向いた端子板２２が一体的に突設され、同端子板
２２にリード導体１９がリベットによって接合されてい
るので、従来のメタリコンやボルト締めと異なり温度の
上昇、下降によってヱリがれたり、漏洩電流によって浸
食されたり、経時的に緩んだりすることがない。In this embodiment, a terminal plate 22 facing diagonally downward is integrally protruded from the lower part of the camping fitting 7, and the lead conductor 19 is joined to the terminal plate 22 by rivets, so that it is not necessary to use the conventional metallized contactor or the like. Unlike bolting, it will not warp due to temperature rises or falls, be eroded by leakage current, or loosen over time.
本発明は前記実施例に限定されるものではなく、次のよ
うに構成することができる。The present invention is not limited to the above embodiments, but can be configured as follows.
（１）上記実施例では舌片状の端子２１とリード導体２
０をリベットによって接合したが、これに代えてかしめ
圧縮によって接合することもできる。(1) In the above embodiment, the tongue-shaped terminal 21 and the lead conductor 2
Although 0 is joined by rivets, it is also possible to join by caulking compression instead.
このように構成しても前記実施例と同様の作用及び効果
を奏する。Even with this configuration, the same operations and effects as in the embodiment described above can be achieved.
（２）舌片状の端子２１は前記実施例では２個所に設け
たが、限流素子９の数に対応して設けることができる。(2) Although the tongue-shaped terminals 21 are provided at two locations in the embodiment described above, they may be provided in accordance with the number of current-limiting elements 9.
それによって碍子本体５のｂｉ （３の恐れをなくすこ
とができる。As a result, the fear of bi(3) of the insulator body 5 can be eliminated.
発明の効果
本発明の避雷機能を備えた懸垂碍子のピンｔｉ造は、遮
断不能となって続流が流れたとき発生するアークは舌片
状の端子から筒部下面と同筒部の下に連結された懸垂碍
子の筒部上面に触れないように斜め下方に吹き出すので
、碍子の筒部上面又は下面のいずれにも当たることな（
、）懸垂碍子の筒部を損傷することがないという優れた
効果を奏する。Effects of the Invention The pin structure of the suspension insulator with the lightning protection function of the present invention is such that the arc generated when the following current flows due to the inability to shut off is caused to flow from the tongue-shaped terminal to the lower surface of the cylinder and the lower part of the cylinder. The air is blown diagonally downward without touching the upper surface of the cylindrical portion of the connected suspended insulator, so it does not hit either the upper or lower surface of the cylindrical portion of the insulator (
,) has the excellent effect of not damaging the cylindrical part of the suspended insulator.
第１図は本発明の実施例を示す懸垂碍子の断面図、第２
図はピン金具の正面図、第３図はピン金具の平面図、第
４図は避雷碍子の使用状態を示す正面図である。
５・・・碍子本体、５ａ・・・筒部、５ｃ・・・頭部、
７・・・キャップ金具、８・・・ピン金具、９・・・限
流素子、１２・・・上部電極、１３・・・下部電極、２
ｏ・・・リード導体、２１・・・舌片状の端子FIG. 1 is a sectional view of a suspension insulator showing an embodiment of the present invention, and FIG.
3 is a front view of the pin fitting, FIG. 3 is a plan view of the pin fitting, and FIG. 4 is a front view showing the usage state of the lightning arrester. 5... Insulator body, 5a... Cylinder part, 5c... Head,
7... Cap fitting, 8... Pin fitting, 9... Current limiting element, 12... Upper electrode, 13... Lower electrode, 2
o... Lead conductor, 21... Tongue-shaped terminal
Claims (1)
た有蓋円筒状の頭部（５ｃ）に対し、キャップ金具（７
）を嵌合固定し、前記頭部（５ｃ）の内部にピン金具（
８）を嵌入固定し、前記笠部（５ａ）には限流素子（９
）を埋設して、その上下両端部に上部電極（１２）及び
下部電極（１３）を設けた懸垂型避雷碍子において、前
記ピン金具（８）から一体的に舌片状の端子（２１）を
斜め下方へ突設し、同端子（２１）と前記限流素子（９
）とをリード導体（２０）により接続したことを特徴と
する避雷機能を備えた懸垂碍子のピン構造。 ２、前記リード導体（２０）は前記端子（２１）にかし
め又はリベットにより固定されている特許請求の範囲第
１項に記載の避雷機能を備えた懸垂碍子のピン構造。[Claims] 1. A cap fitting (7
) is fitted and fixed, and a pin fitting (
8) is fitted and fixed, and a current limiting element (9) is fitted in the cap (5a).
) is buried and an upper electrode (12) and a lower electrode (13) are provided at both upper and lower ends of the suspension type lightning arrester, in which a tongue-shaped terminal (21) is integrally connected to the pin fitting (8). The terminal (21) and the current limiting element (9) are provided to protrude diagonally downward.
) are connected by a lead conductor (20). 2. The pin structure of a suspension insulator with a lightning protection function according to claim 1, wherein the lead conductor (20) is fixed to the terminal (21) by caulking or rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6728287A JPS63232221A (en) | 1987-03-20 | 1987-03-20 | Pin construction of suspension insulator with lightning arresting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6728287A JPS63232221A (en) | 1987-03-20 | 1987-03-20 | Pin construction of suspension insulator with lightning arresting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63232221A true JPS63232221A (en) | 1988-09-28 |
Family
ID=13340461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6728287A Pending JPS63232221A (en) | 1987-03-20 | 1987-03-20 | Pin construction of suspension insulator with lightning arresting function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63232221A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116318U (en) * | 1991-03-29 | 1992-10-16 | 日本碍子株式会社 | Suspended lightning arrester |
| JPH0520946A (en) * | 1991-07-12 | 1993-01-29 | Mitsubishi Electric Corp | Suspension insulator having function being protected from lightning |
-
1987
- 1987-03-20 JP JP6728287A patent/JPS63232221A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04116318U (en) * | 1991-03-29 | 1992-10-16 | 日本碍子株式会社 | Suspended lightning arrester |
| JPH0520946A (en) * | 1991-07-12 | 1993-01-29 | Mitsubishi Electric Corp | Suspension insulator having function being protected from lightning |
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