JPH0316194Y2 - - Google Patents
Info
- Publication number
- JPH0316194Y2 JPH0316194Y2 JP1982144125U JP14412582U JPH0316194Y2 JP H0316194 Y2 JPH0316194 Y2 JP H0316194Y2 JP 1982144125 U JP1982144125 U JP 1982144125U JP 14412582 U JP14412582 U JP 14412582U JP H0316194 Y2 JPH0316194 Y2 JP H0316194Y2
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- hole
- lower cover
- discharge electrode
- electrode
- 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.)
- Expired
Links
- 239000005871 repellent Substances 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 4
- 229920002050 silicone resin Polymers 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- GHPGOEFPKIHBNM-UHFFFAOYSA-N antimony(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Sb+3].[Sb+3] GHPGOEFPKIHBNM-UHFFFAOYSA-N 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Fuses (AREA)
Description
【考案の詳細な説明】
本考案は円筒形カツトアウトの改良に係り、特
に雷雨時にも確実に放電動作が行なえるようにし
た放電電極部の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a cylindrical cutout, and particularly to a structure of a discharge electrode portion that enables reliable discharge operation even during thunderstorms.
近年、襲雷地区の高圧配電線路の柱上変圧器の
１次側には、カツトアウトの負荷側の充電部に放
電電極を備えさらにその放電電極をアース側の取
付金具に備えた放電電極に対し放電ギヤツプを介
して対向させたいわゆる放電電極（閃絡角）付円
筒形カツトアウトが使用されている。 In recent years, the primary side of pole-mounted transformers on high-voltage distribution lines in lightning-struck areas has been equipped with a discharge electrode on the live part of the load side of the cutout, and the discharge electrode is connected to the discharge electrode on the mounting bracket on the ground side. Cylindrical cutouts are used with so-called discharge electrodes (flash angles) facing each other across a discharge gap.
これは雷サージが配電線に伝搬して侵入してき
た場合にその雷サージによつて放電ギヤツプで放
電を発生させ、その放電電流を取付金具より大地
へ逃がして変圧器を絶縁破壊から護るようにした
ものである。 This is to protect the transformer from dielectric breakdown by causing a discharge in the discharge gap when a lightning surge propagates and enters the distribution line, and the discharge current escapes from the mounting bracket to the ground. This is what I did.
ところで、上記放電電極付円筒形カツトアウト
においては一般にギヤツプ長の調整が出来ないこ
とや、仮にできてもその放電ギヤツプを構成する
両放電電極（充電側およびアース側両放電電極）
の形状が先尖形状になつていないため雷サージの
侵入時には放電開始が遅れて充分な保護が出来な
いという問題があつた。 By the way, in the above-mentioned cylindrical cutout with a discharge electrode, it is generally not possible to adjust the gap length, and even if it were possible, both discharge electrodes (both charging side and ground side discharge electrodes) making up the discharge gap cannot be adjusted.
Because the shape of the battery does not have a pointed shape, there was a problem in that when a lightning surge invaded, the start of discharge was delayed and sufficient protection could not be provided.
また、上記においては下部カバーに設けた放電
用孔が充電部側の放電電極を隠蔽する意味から小
さく形成されているために雷雨時にはこの孔に雨
水が侵入しそして孔内で停滞するため誘電体であ
る雨水によつて同孔が塞がれて放電開始電圧にバ
ラツキを生じさせたり、放電の妨げとなつたりす
る問題があつた。 In addition, in the above case, the discharge hole provided in the lower cover is formed small in order to hide the discharge electrode on the live part side, so during thunderstorms, rainwater enters this hole and stagnates inside the hole, so the dielectric There was a problem in that the holes were clogged by rainwater, causing variations in the discharge starting voltage and interfering with discharge.
本考案は、実願昭57−90430号の分割出願で、
原考案は、限流素子内蔵円筒形カツトアウトにお
いて限流素子ユニツトの保持装置に関するもので
あるが、本案は放電電極部の構造に関するもので
上記問題点を解決せんとするものである。すなわ
ちカツトアウト本体１の下部カバー１６の側面に
位置して先尖形状の放電部２９ｂを有する充電側
放電電極２９を設け、一方腕木取付金具５には上
記充電側の放電部に対し放電ギヤツプＧを介して
対向する先尖形状のアース側放電電極３４をギヤ
ツプ長が調整可能に対向方向にスライド自在で所
望位置で固定できるように設け、且つ前記下部カ
バー１６には、周縁にスリ割りを設けて弾性係合
部を形成した撥水性を有し絶縁性の放電案内部材
３１を下部カバーに設けた取付孔の外側開口部に
嵌着し、該放電案内部材に放電用貫通孔３１ａを
設け、該貫通孔に対し、前記放電電極２９をその
先尖状放電部２９ｂのみが孔奥に覗出し、先尖部
の基部側大径部が孔の内側端面に係合するように
して対接し、更に前記放電用貫通孔３１ａの出口
側開口部３１ｂを特にその下側３１ｃが下方に傾
斜するように拡開したことを特徴とするものであ
る。 This invention is a divisional application of Utility Application No. 57-90430.
The original idea relates to a holding device for a current limiting element unit in a cylindrical cutout with a built-in current limiting element, but the present invention relates to the structure of a discharge electrode section and attempts to solve the above-mentioned problems. That is, a charging-side discharge electrode 29 is provided on the side surface of the lower cover 16 of the cut-out main body 1 and has a tip-shaped discharge portion 29b, while a discharge gap G is provided in the arm mounting bracket 5 for the charging-side discharge portion. A ground-side discharge electrode 34 having a tipped shape facing through the electrode is provided so that the gap length can be adjusted so that it can be slid freely in opposing directions and fixed at a desired position, and the lower cover 16 is provided with a slit on the periphery. A water-repellent and insulating discharge guide member 31 having an elastic engagement portion is fitted into the outer opening of a mounting hole provided in the lower cover, and a discharge through hole 31a is provided in the discharge guide member. The discharge electrode 29 is brought into contact with the through hole in such a way that only its pointed discharge portion 29b peeks out into the hole, and the large diameter portion on the base side of the pointed portion engages with the inner end surface of the hole, and further The outlet side opening 31b of the discharge through hole 31a is expanded so that the lower side 31c thereof is inclined downward.
以下、本考案の技術思想を限流素子内蔵円筒形
カツトアウトにおいて、具現化した場合の実施例
を第１図及び第２図に基づいて説明する。 Hereinafter, an embodiment in which the technical concept of the present invention is realized in a cylindrical cutout with a built-in current limiting element will be described with reference to FIGS. 1 and 2.
１は円筒形の磁器よりなる本体、２は上部口出
線、３は下部口出線、４は本体１の中央に装着し
た本体支持バンド、５はカツトアウトＡを腕金６
に取付けるための取付金具、７は支持バンド４と
取付金具５とを連結するための支持ボルト、８は
ナツトを示す。また９は本体１内に固定した下部
固定電極、１０はその下部接触子１１が下部固定
電極９に接触して本体１内に保持されるヒユーズ
筒、１２はヒユーズ筒１０に装着されたヒユー
ズ、１３は下部口出線３と下部固定電極９間を連
結するリード線、１４は接続用ビス、１５は本体
１内に収納された消弧筒、１７は緩衝リング、１
６は本体１の下端開口部１ａに固着したポリエチ
レン等の合成樹脂からなる全体が大略筒状に形成
された下部カバーであり、同カバー１６を本体１
の下端開口部１ａに固着したとき本体１の内周壁
１ｂに対し限流素子ユニツトＢが同心的に配置さ
れるように上部の延長部１６ａには半円弧状の収
納部１６ｂが形成され、また下部には下方がラツ
パ状に拡開する開口部１６ｃが形成されている。 1 is a main body made of cylindrical porcelain, 2 is an upper lead wire, 3 is a lower lead wire, 4 is a main body support band attached to the center of the main body 1, 5 is a cutout A connected to an armrest 6
7 is a support bolt for connecting the support band 4 and the mounting bracket 5, and 8 is a nut. Further, 9 is a lower fixed electrode fixed in the main body 1, 10 is a fuse tube whose lower contact 11 contacts the lower fixed electrode 9 and is held in the main body 1, 12 is a fuse attached to the fuse tube 10, 13 is a lead wire connecting the lower outlet wire 3 and the lower fixed electrode 9; 14 is a connecting screw; 15 is an arc extinguishing tube housed in the main body 1; 17 is a buffer ring;
Reference numeral 6 denotes a lower cover made of synthetic resin such as polyethylene and fixed to the lower end opening 1a of the main body 1, and the cover 16 is generally cylindrical in its entirety.
A semi-circular storage portion 16b is formed in the upper extension portion 16a so that the current limiting element unit B is arranged concentrically with respect to the inner circumferential wall 1b of the main body 1 when fixed to the lower end opening 1a. An opening 16c is formed in the lower part, and the opening 16c expands downward in a tapered manner.
また、１６ｄは一方が上記収納部１６ｂの下部
に連通しまた他方が側方に開口する放電電極取付
用孔、１６ｅは開口部１６ｃの周縁に形成した紐
取付用孔を示す。 Reference numeral 16d indicates a discharge electrode attachment hole, one of which communicates with the lower part of the housing portion 16b and the other side opens to the side, and 16e indicates a string attachment hole formed at the periphery of the opening 16c.
またＢは半円弧状の限流素子ユニツトであり、
限流素子１８は酸化亜鉛（ZnO）を主成分とし、
これに微量の金属酸化物例えば、酸化ビスマス
（Bi2O3）、酸化アンチモン（Sb2O3）などを添加
して混合し、さらにプレスにて加圧したのち1200
〜1300℃の高温で焼成したもので、電圧非直線性
を有しかつ半円弧状に形成された同素子１８は上
下２段積みして直列接続されている。１９は素子
１８の端面間に介在し素子相互間の接触を確実に
するアルミ等よりなる接触板、２０は素子１８の
上下各端面に施された金属溶射、２１は上記金属
溶射２０を介して上部端面１８ａに接続した上部
端子であり、その下部を同端面１８ａに対しその
全面に亘つて接続するほか上部はその中央のみを
突出して接続部２１ａを形成している。２１ｂは
ネジ孔を示す。２２は下部端面１８ｂに接続した
下部端子であり、下方へ突出した接続部２２ａに
はネジ孔２２ｂが形成されている。２３は上部端
子２１を成形時に動かないように固定する当金
具、２４は上下部両端子２１，２２の接続部２１
ａ，２２ａを覗いた両端子２１，２２および限流
素子１８の外周面を一体に被覆成形するEPT，
EPOM等の耐トラツキング性ゴムあるいはエポ
キシ樹脂、AAS，ABS等の合成樹脂よりなる絶
縁部材、２５は上下部両端子２１，２２の周囲に
形成された凹み２６に対しそれぞれ注入したシリ
コーン樹脂等の充填材を示す。 Further, B is a semicircular arc-shaped current limiting element unit,
The current limiting element 18 has zinc oxide (ZnO) as its main component,
A small amount of metal oxide such as bismuth oxide (Bi 2 O 3 ), antimony oxide (Sb 2 O 3 ), etc. is added to this, mixed, and then pressurized with a press at 1200 ml.
The elements 18, which are fired at a high temperature of ~1300° C. and have voltage non-linearity and are formed in a semicircular arc shape, are stacked in two layers, upper and lower, and connected in series. 19 is a contact plate made of aluminum or the like that is interposed between the end faces of the element 18 and ensures contact between the elements; 20 is a metal spraying applied to each of the upper and lower end faces of the element 18; This is an upper terminal connected to the upper end surface 18a, and its lower part is connected to the end surface 18a over its entire surface, and only the center of the upper part protrudes to form a connecting portion 21a. 21b indicates a screw hole. 22 is a lower terminal connected to the lower end surface 18b, and a screw hole 22b is formed in the connecting portion 22a that projects downward. 23 is a metal fitting that fixes the upper terminal 21 so that it does not move during molding, and 24 is a connecting part 21 between both the upper and lower terminals 21 and 22.
EPT, which integrally covers and molds the outer peripheral surfaces of both terminals 21 and 22 and current limiting element 18 when looking through a and 22a;
An insulating member made of tracking-resistant rubber such as EPOM or synthetic resin such as epoxy resin, AAS, ABS, etc. 25 is filled with silicone resin, etc. injected into the recesses 26 formed around both the upper and lower terminals 21 and 22. Indicates the material.
このような構成からなる限流素子ユニツトＢは
下部カバー１６によつて本体１に取り付けられ
る。つまり、限流素子ユニツトＢは同ユニツトを
下部カバー１６の収納部１６ｂに対し前もつて嵌
入して保持させその状態の下部カバーを本体１の
下端開口部１ａに接着材３２により固着して取り
付けられる。なお、上記取付けられた限流素子ユ
ニツトＢの上部端子２１はその接続部２１ａが接
続導体２８によつて下部固定電極９に接続され、
また下部端子２２の接続部２２ａには下部カバー
１６の取付穴１６ｄより差し込まれた充電側の放
電電極２９がその放電部２９ｂを後述のアース側
放電電極の放電部３４ａに対向するようにしてネ
ジ連結されている。２９ａは放電電極２９のネジ
部、２７，３３は接続用ビスを示す。３０は限流
素子ユニツトＢをより確実に固定するために収納
部１６ｂの間隙に注入したシリコーン樹脂等の充
填材、３１は充電側の放電電極２９の前面に位置
した先尖形状の放電部２９ｂを放電用貫通孔３１
ａが囲むようにしたテフロン及びシリコーン樹脂
あるいはゴムよりなる放電案内部材であり、その
周面にスリ割りを形成して弾性を持たせた同部材
はこの弾性を生かして下部カバー１６の外側から
取付穴１６ｄに押し込んで嵌着される。 The current limiting element unit B having such a configuration is attached to the main body 1 by the lower cover 16. In other words, the current limiting element unit B is installed by inserting the same unit into the storage part 16b of the lower cover 16 with the front and holding it, and then fixing the lower cover in this state to the lower end opening 1a of the main body 1 with the adhesive 32. It will be done. Note that the connection portion 21a of the upper terminal 21 of the installed current limiting element unit B is connected to the lower fixed electrode 9 by the connection conductor 28,
Further, the charging side discharge electrode 29 inserted through the mounting hole 16d of the lower cover 16 is screwed into the connection part 22a of the lower terminal 22 so that its discharge part 29b faces the discharge part 34a of the earth side discharge electrode, which will be described later. connected. Reference numeral 29a indicates a threaded portion of the discharge electrode 29, and reference numerals 27 and 33 indicate connection screws. 30 is a filling material such as silicone resin injected into the gap of the housing portion 16b to more securely fix the current limiting element unit B, and 31 is a tip-shaped discharge portion 29b located in front of the discharge electrode 29 on the charging side. Through hole 31 for discharge
A is a discharge guide member made of Teflon, silicone resin, or rubber that is surrounded by the member, and the member has elasticity by forming slots on its circumferential surface, and is attached from the outside of the lower cover 16 by taking advantage of this elasticity. It is pushed into the hole 16d and fitted.
なお、上記の放電貫通孔３１ａは侵入した雨水
つまり、誘電体である雨水がこの孔内に停滞しな
いように上記のごとく同部材３２を撥水性を有す
る絶縁部材でもつて構成すると共にさらに放電用
貫通孔３１ａの形状をその出口側開口部３１ｂ側
の下部３１ｃ側が特に下方に傾斜するように拡開
して孔内の雨水が孔外へ速やかに排出されるよう
にしている。 The above-mentioned discharge through hole 31a is constructed by constructing the same member 32 with a water-repellent insulating material as described above so that the rainwater that has entered, that is, the rainwater that is a dielectric material does not stagnate in this hole, and also has a discharge through hole. The shape of the hole 31a is expanded so that the lower part 31c on the outlet side opening 31b side is particularly inclined downward so that rainwater inside the hole can be quickly drained out of the hole.
１６ｆは取付穴１６ｄに連通する排水孔を示
す。３５は下部カバー１６の開口部１６ｃに係合
片３９によつて挿着された合成樹脂製の密栓、４
０は一端を下部カバー１６の紐取付用孔１６ｅに
通して同カバー１６に連結した連結紐、３４は上
記充電側の放電電極２９を放電部２９ｂと放電ギ
ヤツプＧを介して対向させたアース側の取付金具
５の下部に設けたアース側の放電電極であり、充
電側の放電電極の放電部２９ｂと対向する放電部
３４ａは先尖形状になつている。つまり、両放電
部２９ｂ，３４ａは雷サージの侵入時、同部に電
界が集中して確実に放電ギヤツプにおいて放電が
行なわれるようになつている。なお、放電電極３
４は断面が形に形成され、案内金具４１によつ
て前後方向に真つ直ぐにスライドできるようにな
つておりギヤツプ長の調整がしやすくなつてい
る。３７，３８は放電電極３４を固定するための
ボルトとナツトを示す。 16f indicates a drainage hole communicating with the mounting hole 16d. 35 is a synthetic resin seal plug inserted into the opening 16c of the lower cover 16 by an engaging piece 39;
0 is a connecting string whose one end is passed through the string attachment hole 16e of the lower cover 16 and connected to the same cover 16, and 34 is a ground side where the discharge electrode 29 on the charging side faces the discharge part 29b through the discharge gap G. The discharge part 34a, which is a discharge electrode on the ground side provided at the lower part of the mounting bracket 5, and which faces the discharge part 29b of the discharge electrode on the charging side, has a pointed shape. In other words, when a lightning surge enters both discharge portions 29b and 34a, the electric field is concentrated in the same portion, thereby ensuring that discharge occurs in the discharge gap. Note that the discharge electrode 3
4 has a shaped cross section and can be slid straightly in the front and back direction by means of a guide fitting 41, making it easy to adjust the gap length. Numerals 37 and 38 indicate bolts and nuts for fixing the discharge electrode 34.
上記構成からなるカツトアウトに対し、今雷サ
ージが侵入してくれば放電ギヤツプＧ間にこの電
圧が印加される。そしてその雷サージの電圧が放
電ギヤツプの設定値より大きければ同放電ギヤツ
プＧで放電が起こりサージはカツトアウトの上部
口出線２−上部固定電極（特に図示しない）−ヒ
ユーズ筒の上部接触子（特に図示しない）−ヒユ
ーズ１２−ヒユーズ筒の下部接触子９−カツトア
ウトの下部固定電極１０−接続導板２８−上部端
子２１−限流素子１８−下部端子２２−充電側の
放電電極３４−取付金具５を経て大地に放電され
る。 If a lightning surge now enters the cutout having the above configuration, this voltage will be applied across the discharge gap G. If the voltage of the lightning surge is larger than the set value of the discharge gap, a discharge occurs in the same discharge gap G, and the surge is caused by the upper lead wire 2 of the cutout - the upper fixed electrode (not particularly shown) - the upper contact of the fuse tube (especially (not shown) - Fuse 12 - Lower contact 9 of fuse tube - Cut-out lower fixed electrode 10 - Connection conductor plate 28 - Upper terminal 21 - Current limiting element 18 - Lower terminal 22 - Charging side discharge electrode 34 - Mounting bracket 5 It is then discharged into the earth.
また、この場合上記放電径路に介在する限流素
子１８により電圧は低く制限されると共に商用周
波の続流が遮断されて変圧器を絶縁破壊から護る
と同時にカツトアウトのヒユーズ切れが防止され
る。 Further, in this case, the voltage is limited to a low level by the current limiting element 18 interposed in the discharge path, and the follow-on current of the commercial frequency is cut off, thereby protecting the transformer from dielectric breakdown and at the same time preventing the cutout from blowing out the fuse.
本考案は上述のようであるから、雷サージが侵入
すれば、先尖形状の放電部２９ｂ，３４ａにおい
て、電界が集中するため放電ギヤツプＧでの放電
が確実に行なわれる。Since the present invention is as described above, when a lightning surge enters, the electric field is concentrated in the tip-shaped discharge portions 29b and 34a, so that the discharge in the discharge gap G is reliably performed.
また、アース側の放電電極３４が突出方向にス
ライド可能に設けられているためギヤツプ長の調
整を柱上等の足場の悪いところで行なう場合にも
簡単に行なうことができる。 Further, since the discharge electrode 34 on the ground side is provided so as to be slidable in the protruding direction, the gap length can be easily adjusted even when the gap length is to be adjusted in a place with poor footing such as on a pillar.
また、下部カバー１６に備えられた放電案内部
材３１は撥水性を有する絶縁部材でもつて構成し
而も同部材に形成された放電用貫通孔３１ａには
その開口端３１ｂ側をその下部３１ｃ側が特に下
方に傾斜して拡開する孔形状としたため同孔３１
ａ内には侵入した雨水が停滞することがでくした
がつて、誘電体である雨水によつて放電開始電圧
にバラツキを生じさせたり、放電を妨げられたり
することがなく雷雨時にも正確に放電を行なうこ
とができる。更に、この考案においては放電用貫
通孔３１ａが下部カバーに直接設けられているも
のではなく、下部カバーに設けた取付孔１６ｄの
外側開口部に嵌着した放電案内部材３１に設けら
れているので、放電案内部材を嵌着する下部カバ
ーの外側開口部は大径に形成しても差支えなく、
従つて放電電極２９をこの外側開口部より挿入し
て取り付ける操作が楽に行なえるは勿論である
が、放電案内部材を下部カバーと別体に設けても
その周縁にスリ割りを設けた弾性係合部を設けた
のでカバー外側寄り開口部に押し込むだけで簡単
に抜き取り不能に嵌着できる。 Further, the discharge guide member 31 provided in the lower cover 16 is made of a water-repellent insulating member, and the discharge through hole 31a formed in the same member has an opening end 31b side thereof and a lower part 31c side thereof. The hole 31 is shaped like a hole that expands downwardly.
Since the rainwater that has entered the chamber can be stagnated, the dielectric rainwater does not cause variations in the discharge starting voltage or prevent discharge, and the discharge can be performed accurately even during thunderstorms. Discharge can be performed. Furthermore, in this invention, the discharge through hole 31a is not provided directly in the lower cover, but is provided in the discharge guide member 31 fitted into the outer opening of the attachment hole 16d provided in the lower cover. , the outer opening of the lower cover into which the discharge guide member is fitted may be formed to have a large diameter;
Therefore, it goes without saying that the operation of inserting and attaching the discharge electrode 29 through this outer opening can be performed easily, but even if the discharge guide member is provided separately from the lower cover, the elastic engagement provided with the slot on the periphery can be easily performed. Since the cover is provided with a section, it can be easily fitted into the cover without being removed by simply pushing it into the opening on the outside side of the cover.
第１図は本考案の実施例である限流素子内蔵円
筒形カツトアウトの要部を破断した断面図、第２
図は第１図の要部をさらに拡大して破断した断面
図を各々示す。
１……本体、５……取付金具、１６……下部カ
バー、２９……充電側の放電電極、２９ｂ……放
電部、３１……放電案内部材、３１ａ……放電用
貫通孔、３１ｃ……下部、３４……アース側の放
電電極、３４ａ……放電部、Ｇ……放電ギヤツ
プ。
Figure 1 is a cross-sectional view of a main part of a cylindrical cutout with a built-in current limiting element, which is an embodiment of the present invention.
Each figure shows a further enlarged and broken sectional view of the main part of FIG. 1. DESCRIPTION OF SYMBOLS 1...Main body, 5...Mounting bracket, 16...Lower cover, 29...Charging side discharge electrode, 29b...Discharge part, 31...Discharge guide member, 31a...Through hole for discharge, 31c... Lower part, 34...Discharge electrode on the ground side, 34a...Discharge part, G...Discharge gap.
Claims (1)
位置して先尖形状の放電部２９ｂを有する充電側
放電電極２９を設け、一方腕木取付金具５には上
記充電側の放電部に対し放電ギヤツプＧを介して
対向する先尖形状のアース側放電電極３４をギヤ
ツプ長が調整可能に対向方向にスライド自在で所
望位置で固定できるように設け、且つ前記下部カ
バー１６には、周縁にスリ割りを設けて弾性係合
部を形成した撥水性を有し絶縁性の放電案内部材
３１を下部カバーに設けた取付孔の外側開口部に
嵌着し、該放電案内部材に放電用貫通孔３１ａを
設け、該貫通孔に対し、前記放電電極２９をその
先尖状放電部２９ｂのみが孔奥に覗出し、先尖部
の基部側大径部が孔の内側端面に係合するように
して対接し、更に前記放電用貫通孔３１ａの出口
側開口部３１ｂを特にその下側３１ｃが下方に傾
斜するように拡開したことを特徴とする円筒形カ
ツトアウトの放電電極部の構造。 A charging-side discharge electrode 29 having a tip-shaped discharge portion 29b is provided on the side surface of the lower cover 16 of the cutout body 1, and a discharge gap G is connected to the charging-side discharge portion on the arm mounting bracket 5. The lower cover 16 is provided with a ground side discharge electrode 34 having a tipped shape facing each other so as to be able to adjust the gap length, to be able to slide freely in the opposite direction, and to be fixed at a desired position. A water-repellent and insulative discharge guide member 31 with an engaging portion formed therein is fitted into the outer opening of a mounting hole provided in the lower cover, a discharge through hole 31a is provided in the discharge guide member, and the through hole 31a is provided in the discharge guide member. The discharge electrode 29 is brought into contact with the hole such that only its pointed discharge portion 29b peeks out into the hole, and the large diameter portion of the tip portion on the base side engages with the inner end surface of the hole. A structure of a cylindrical cut-out discharge electrode section, characterized in that the outlet side opening 31b of the discharge through hole 31a is expanded so that the lower side 31c thereof is inclined downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14412582U JPS58192444U (en) | 1982-09-22 | 1982-09-22 | Structure of cylindrical cutout discharge electrode part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14412582U JPS58192444U (en) | 1982-09-22 | 1982-09-22 | Structure of cylindrical cutout discharge electrode part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58192444U JPS58192444U (en) | 1983-12-21 |
| JPH0316194Y2 true JPH0316194Y2 (en) | 1991-04-08 |
Family
ID=30101641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14412582U Granted JPS58192444U (en) | 1982-09-22 | 1982-09-22 | Structure of cylindrical cutout discharge electrode part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58192444U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53138133U (en) * | 1977-04-08 | 1978-11-01 |
-
1982
- 1982-09-22 JP JP14412582U patent/JPS58192444U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58192444U (en) | 1983-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7301096B2 (en) | Insulator for energized terminal of electrical device | |
| US3639681A (en) | Bushing terminal guard | |
| US4540968A (en) | Open fuse cutout | |
| JPH017968Y2 (en) | ||
| US2875267A (en) | Bushing terminal and line lead guard | |
| US3322883A (en) | Prefilled cable termination system | |
| US3445580A (en) | Power cable termination with improved entrance system | |
| JPH0316194Y2 (en) | ||
| KR102143128B1 (en) | Connection device of arrester insertion type | |
| US3192311A (en) | Conductively coated bushing terminal guard | |
| US2859423A (en) | Electrical connector for twin lead-in line | |
| JPS6321082Y2 (en) | ||
| US4228478A (en) | Overvoltage arrester | |
| JPH0235164Y2 (en) | ||
| US2290639A (en) | Overvoltage protector | |
| JPS5930993Y2 (en) | cylindrical cutout | |
| JPH0212712Y2 (en) | ||
| JPH0243085Y2 (en) | ||
| JPH0210767Y2 (en) | ||
| JPH021834Y2 (en) | ||
| US3336435A (en) | Pothead construction with girdle shield | |
| JPS6019317Y2 (en) | Cylindrical cutout with built-in current limiting element | |
| JPS6042417Y2 (en) | Insulator for power distribution | |
| JPH0418194Y2 (en) | ||
| JPH017970Y2 (en) |