JPS634349Y2 - - Google Patents
Info
- Publication number
- JPS634349Y2 JPS634349Y2 JP1981088199U JP8819981U JPS634349Y2 JP S634349 Y2 JPS634349 Y2 JP S634349Y2 JP 1981088199 U JP1981088199 U JP 1981088199U JP 8819981 U JP8819981 U JP 8819981U JP S634349 Y2 JPS634349 Y2 JP S634349Y2
- Authority
- JP
- Japan
- Prior art keywords
- current
- current limiting
- contact
- horn
- limiting element
- 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
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000012212 insulator Substances 0.000 description 11
- 239000004020 conductor Substances 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229920005549 butyl rubber Polymers 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は送配電線路に用いられる碍子装置に取
付けて雷撃等によつてせん絡後発生する続流を阻
止する限流ホーンに関するものである。[Detailed Description of the Invention] The present invention relates to a current-limiting horn that is attached to an insulator device used in power transmission and distribution lines to prevent follow-on current that occurs after a flashover caused by a lightning strike or the like.
従来、送配電線に誘導される雷サージ過電圧等
の異常電圧によつてせん絡後発生する続流アーク
から碍子を保護するため、碍子金具より鉄棒等の
導電材よりなる屈曲状のアーキングホーンを張設
することにより続流アークを碍子から遠ざけるよ
うにしたものが広く知られているが、アーキング
ホーン間で発生する続流アークは、高熱でしかも
せん光を伴う大きな爆発音を発生するため、住民
に迷惑をかけるばかりでなく火災の原因にもなる
など多くの欠点があつた。そこで、この雷サージ
過電圧によるせん絡の後に引続いて流れようとす
る続流アークを阻止するため、本出願人等は先に
特開昭55−136412号公報に示すように、ライン側
ホーンの先端に電圧電流特性が非直線性の材料よ
りなる限流素子を内蔵したいわゆる限流ホーンを
取付けるようにしたものを提案したが、この限流
ホーンはFRP等の絶縁材よりなる有底筒体の内
底部に嵌装した放出電極と銅等の導電材よりなる
蓋金具との間に炭化珪素や酸化亜鉛等の電圧電流
特性が非直線性の材料よりなる限流素子を該有底
筒体の内壁との間に絶縁用合成樹脂等の接着材層
を介在させて嵌装し、さらに、該限流素子と蓋金
具との間には、蓋金具と限流素子と放出電極とを
密接させる強度のおおきなバネ座金を介在させ、
これらを放出電極のアーク放出部を残して有底筒
体の外部からブチルゴム等の絶縁物で一体にモー
ルドして構成さたものとしているから、絶縁電線
に誘導された雷サージ過電圧に対しては限流ホー
ンの放出電極とアース側ホーンとの間でせん絡さ
せ、その直後に流れようとする続流に対しては限
流素子の持つ電圧電流特性の非直線性によつて速
やかに阻止して続流アークの発生を未然に防止で
きるという利点を有するものの、有底筒体に収容
された限流素子が万一劣化するなどして電圧電流
特性がそこなわれ、雷サージ過電圧等によるせん
絡の後に流れようとする続流を阻止できない場
合、有底筒体内において蓋金具と放出電極との間
で続流アークが発生することになり、この時生じ
る高温ガスにより有底筒体内の圧力が急激に上昇
して場合によつては有底筒体が爆発する事故をひ
き起こす危険性があり、このように有底筒体によ
り限流素子が密封された構造であるため限流素子
が続流を阻止出来ない場合、限流ホーンが爆発、
飛散して公衆災害等の二次災害を招く惧れがあつ
た。また、蓋金具および放出電極と限流素子との
電気的接続を確実なものとするためのバネ座金は
強力なものを用いなければならず、この反発力に
耐えるため有底筒体は厚肉で大型のものとなり、
限流ホーン全体が大型化するばかりでなく仮に有
底筒体内で続流アークによるガスが発生したとき
は、有底筒体の肉厚が厚い分だけ内圧強度が強く
なるため内部のガス圧力が非常に高圧になり、万
一有底筒体が爆発した場合には、その破片が遠く
まで飛散して災害が広範囲に及ぶ惧れがある等多
くの問題点があつた。さらに、バネ座金を使用し
ても限流素子相互の接触は焼結材である限流素子
の性質上不完全であつた。 Conventionally, in order to protect insulators from follow-on arcs that occur after flashing due to abnormal voltages such as lightning surge overvoltages induced in power transmission and distribution lines, bent arcing horns made of conductive materials such as iron rods have been used rather than insulator metal fittings. It is widely known that the follow-on arc is kept away from the insulator by stretching the arc, but the follow-on arc that occurs between the arcing horns generates high heat and a loud explosion sound accompanied by flashing light. They had many drawbacks, including not only causing inconvenience to residents but also causing fires. Therefore, in order to prevent the follow-on arc that continues to flow after the flashover caused by the lightning surge overvoltage, the present applicant and others have previously proposed a method for installing the line-side horn as shown in Japanese Patent Application Laid-Open No. 136412/1983. We proposed a so-called current-limiting horn with a built-in current-limiting element made of a material with non-linear voltage-current characteristics attached to the tip, but this current-limiting horn is a cylinder with a bottom made of an insulating material such as FRP. A current-limiting element made of a material with non-linear voltage-current characteristics, such as silicon carbide or zinc oxide, is installed between the emission electrode fitted on the inner bottom of the bottomed cylinder and the lid fitting made of a conductive material such as copper. An adhesive layer such as an insulating synthetic resin is interposed between the inner wall of the current-limiting element and the lid, and the lid, the current-limiting element, and the emission electrode are closely connected between the current-limiting element and the lid. A spring washer with a large strength is used to
These are integrally molded with an insulator such as butyl rubber from the outside of the bottomed cylindrical body, leaving the arc emitting part of the emitting electrode, so it can withstand lightning surge overvoltage induced in the insulated wire. The current-limiting element is caused to sparkle between the discharge electrode and the earth-side horn, and any follow-on current that attempts to flow immediately after that is quickly blocked by the non-linearity of the voltage-current characteristics of the current-limiting element. Although it has the advantage of being able to prevent the occurrence of follow-on arcs, if the current limiting element housed in the bottomed cylinder were to deteriorate, the voltage-current characteristics would be damaged, causing damage due to lightning surge overvoltage, etc. If it is not possible to prevent the follow-on current from flowing after the contact, a follow-on arc will occur between the lid fitting and the discharge electrode in the bottomed cylinder, and the high temperature gas generated at this time will cause the pressure inside the bottomed cylinder to increase. There is a danger that the current limiting element may rise rapidly and cause the bottomed cylinder to explode in some cases. If the follow-on current cannot be stopped, the current limiting horn will explode,
There was a risk that the particles would scatter and cause secondary disasters such as public disasters. In addition, a strong spring washer must be used to ensure the electrical connection between the lid fitting, the emission electrode, and the current limiting element, and the bottomed cylinder must be thick-walled to withstand this repulsive force. It becomes a large one,
Not only does the current-limiting horn become larger as a whole, but if gas is generated by a follow-on arc inside the bottomed cylinder, the internal pressure will increase as the wall thickness of the bottomed cylinder becomes thicker. There were many problems, such as the extremely high pressure, and in the event that the bottomed cylinder exploded, the fragments would be scattered far and wide, causing a disaster. Further, even when a spring washer is used, the contact between the current limiting elements is incomplete due to the nature of the current limiting elements being made of sintered material.
本考案は前記のような問題点を解決した限流ホ
ーンを目的として完成されたもので、以下、図示
の実施例について詳細に説明する。 The present invention has been completed with the aim of providing a current limiting horn that solves the above-mentioned problems, and the illustrated embodiment will be described in detail below.
１は鉄棒等の導電材よりなるホーン主体で、該
ホーン主体１の先端には支持側の電極２がその上
方中央の突出部２ａに形成された雌ねじ部２ｂを
前記ホーン主体１の先端に形成された雌ねじ部１
ｂに螺合させることにより設けられている。３は
下面中央に突起状のアーク放出部３ａを設けた銅
等の導電材よりなる放出側の電極で、該放出側の
電極３は前記支持側の電極２の下方に所要の間隔
をおいて対向させ、両電極２，３間には炭化珪素
や酸化亜鉛等の電圧電流特性が非直線性の材料よ
りなる限流素子４ａを複数個重ねた限流素子群４
を介在させ、両電極２，３とこの限流素子４ａは
前記ホーン主体１の先端に上端が固着されている
ブチルゴム、EPゴム或いは弾性合成樹脂等の弾
性絶縁材よりなる肉薄の外套体５をもつて被覆さ
れている。限流素子４ａは板状主体の上下面に金
属溶射等の任意の手段により電極被膜４ｂ，４ｂ
を形成したもので、各限流素子４ａ，４ａ間およ
び上端の限流素子４ａと支持側電極となる上側の
電極２間には相互の電気的導通を常時保持させる
導電接触子７が該限流素子４ａと電極２に同一円
周上に配設された有底穴状の接触子支持部８に支
持させて設けられている。導電接触子７としては
コイル状に巻かれた燐青銅などの良導電材よりな
る金属細線７ａのみ或いはこの金属細線７ａとそ
の端部に接触されて該有底穴状の接触子支持部８
に沿い摺動できる金属キヤツプ７ｂとよりなるも
の或いは導電性ゴム短柱体が使用され、これらは
いずれも接触子支持部８に嵌合されるものとし、
また、金属キヤツプ７ｂは金属細線７ａが使用さ
れる場合に限流素子４ａとの接触を広くするため
と、コイル状の金属細線７ａを有底穴状の接触子
支持部８に圧入する際に座屈するのを防ぐガイド
役として用いるものであり、この状態において金
属キヤツプ７ｂが金属細線７ａの弾発力により常
時軸線方向に付勢されて良好な電気的接触を保ち
得るのでる。なお、前記した導電接触子７は限流
素子４相互の電気的接触を高めると同時に外套体
５が経時劣化して限流素子４ａを支持側の電極２
および放出側の電極３間において抱持する力が衰
えた場合にその弛みに追随する程度の弾発力を有
するものであつて、この弾発力があまり大き過ぎ
ると外套体５に過度の弾力が作用し、そのため外
套体５のクリープ変形による伸びを促進すること
になるので、弾発力は極く小さなものとするのが
好ましい。また、導電接触子７を第５図に示すよ
うに、有底穴状の接触子支持部８の深さより若干
長い導電性ゴム短柱体としてもよく、要は弾発力
が小さく且つたわみ量の大きい導電材であれば、
その材質、形状を特に限定するものではないが、
導電性ゴム短柱体を導電接触子７とした場合には
限流素子４ａや電極との接触面が大きく得られる
うえに座屈変形の心配がない。さらに、電極２，
３或いは接触子支持部８の数量、配置等について
も上記実施例に限定するものではない。 Reference numeral 1 denotes a horn main body made of a conductive material such as an iron rod, and a support side electrode 2 is formed at the tip of the horn main body 1, and a female screw portion 2b is formed at the upper central protrusion 2a. female threaded part 1
It is provided by screwing into b. Reference numeral 3 denotes a discharge side electrode made of a conductive material such as copper, with a protruding arc discharge part 3a provided at the center of the lower surface, and the discharge side electrode 3 is placed below the supporting side electrode 2 at a required interval. A current-limiting element group 4 in which a plurality of current-limiting elements 4a made of a material with non-linear voltage-current characteristics, such as silicon carbide or zinc oxide, are piled up between the electrodes 2 and 3, facing each other.
The electrodes 2, 3 and the current limiting element 4a are connected to a thin mantle 5 made of an elastic insulating material such as butyl rubber, EP rubber, or elastic synthetic resin, the upper end of which is fixed to the tip of the horn main body 1. It is also coated. The current limiting element 4a is coated with electrode coatings 4b, 4b on the upper and lower surfaces of the plate-shaped main body by any means such as metal spraying.
A conductive contact 7 is provided between each current limiting element 4a, 4a and between the current limiting element 4a at the upper end and the upper electrode 2 serving as the support side electrode to maintain mutual electrical continuity at all times. The flow element 4a and the electrode 2 are provided so as to be supported by a contact support part 8 in the form of a bottomed hole that is disposed on the same circumference. The conductive contact 7 may be a thin metal wire 7a made of a highly conductive material such as phosphor bronze wound into a coil, or a contact support portion 8 in the shape of a bottomed hole that is in contact with the thin metal wire 7a and its end.
A metal cap 7b that can slide along the contact surface 7b or a conductive rubber short column body is used, and both of these shall be fitted into the contact support portion 8.
Further, the metal cap 7b is used to widen the contact with the current limiting element 4a when the thin metal wire 7a is used, and when press-fitting the coiled thin metal wire 7a into the bottomed hole-shaped contact support portion 8. It is used as a guide to prevent buckling, and in this state, the metal cap 7b is always urged in the axial direction by the elastic force of the thin metal wire 7a, and good electrical contact can be maintained. The conductive contact 7 described above enhances the electrical contact between the current limiting elements 4, and at the same time, the outer body 5 deteriorates over time, causing the current limiting element 4a to become damaged by the supporting electrode 2.
If the holding force between the electrodes 3 on the emission side weakens, it has an elastic force that follows the slack, and if this elastic force is too large, the mantle 5 will have excessive elasticity. acts, thereby promoting elongation of the mantle 5 due to creep deformation, so it is preferable that the elastic force be extremely small. Further, as shown in FIG. 5, the conductive contact 7 may be a conductive rubber short column slightly longer than the depth of the contact support 8 in the form of a bottomed hole, in short, the elastic force is small and the amount of deflection is small. If it is a conductive material with a large
Although the material and shape are not particularly limited,
When the conductive rubber short column is used as the conductive contact 7, a large contact surface with the current limiting element 4a and the electrode can be obtained, and there is no fear of buckling deformation. Furthermore, electrode 2,
3 or the number, arrangement, etc. of the contact support parts 8 are not limited to the above embodiments.
このように構成されたものは、在来のこの種限
流ホーンと同様例えば碍子本体のライン側ホーン
として使用した場合において、落雷或いは回路の
開閉等により送配電線に衝撃過電圧が加わると、
予めアース側ホーンと放出側の電極３のアーク放
出部３ａ間の大気中静電容量C1と限流素子４ａ
の静電容量C2との関係をC1≪C2となるように予
め設定しておけば、まず、異常電圧は殆どアース
側ホーンの先端とアーク放出部３ａ間に加わつて
アース側ホーンと該アーク放出部３ａ間でせん絡
が始まり、次いで、過電圧は該放出側の電極３に
電気的に接続された限流素子４ａに加わつて限流
素子４ａのインピーダンスがバリスタ効果により
急激に減少し、アース側ホーンとこの限流ホーン
間で過電圧は吸収される。ところが、交流電流に
対しては限流素子４ａはその電圧電流非直線抵抗
発生により速やかに絶縁を回復するため、在来の
ホーン付の碍子装置においてはせん絡に引き続き
流れていた続流は生ぜず、従つて、高熱とともに
閃光を伴つた大きな爆発音を有する続流アークが
碍子装置部分において発生することを適確に抑止
でき、高熱による碍子破壊を防止できるばかりで
なく送配電線を民家に接近して設けても音、光、
火災等の公害および碍子破壊等による二次的事故
の心配がなくなるという効果を発揮することとな
るが、本考案ではホーン主体１の先端に設けられ
る支持側の電極２とこれに対向させた放出側の電
極３ならびに両者間に介在させた限流素子４ａが
いずれも弾性絶縁材よりなる肉薄の外套体５にモ
ールドされているものであるあるから、万一限流
素子４ａが劣化して続流を阻止する機能がなくな
つて、支持側の電極２と放出側の電極３との間で
続流アークが生じても、発生したガスの圧力によ
り外套体５が膨らんで、その側部に容易に亀裂が
生じてこの亀裂から発生ガスを放出することとな
り、従つて、内圧の上昇による爆発事故を防止で
きる。また、外套体５は導電接触子７の弾発力が
小さいので、クリープ変形による伸びはほとんど
発生することがない。さらに、何らかの理由によ
り万一この外套体５がクリープ変形による伸びを
生じて限流素子４ａ，４ａ間が第３図に示すよう
に離間したとしても、限流素子４ａに設けられた
有底穴状の接触子支持部８内に安定して支持され
て適確に軸方向に復元しようとする導電接触子７
が限流素子４ａ，４ａを略全面的に密接させてこ
れら相互間の電気的導通を常時保持しているた
め、電気的導通は常に完全に保たれることにな
る。 Similar to conventional current-limiting horns of this type, when used as a line-side horn of an insulator body, a horn constructed in this way can be used, for example, when an impact overvoltage is applied to the power transmission/distribution line due to a lightning strike or the opening/closing of a circuit.
In advance, the atmospheric capacitance C 1 between the earth side horn and the arc discharge part 3a of the discharge side electrode 3 and the current limiting element 4a are determined.
If the relationship with the capacitance C 2 is set in advance so that C 1 <<C 2 A flashover starts between the arc discharge parts 3a, and then the overvoltage is applied to the current limiting element 4a electrically connected to the discharge side electrode 3, and the impedance of the current limiting element 4a rapidly decreases due to the varistor effect. , overvoltage is absorbed between the earth-side horn and this current-limiting horn. However, in the case of alternating current, the current limiting element 4a quickly recovers its insulation due to the generation of non-linear resistance of the voltage and current, so in the conventional horn-equipped insulator device, the follow-up current that flows following the flashover does not occur. Therefore, it is possible to accurately prevent a follow-on arc that produces a loud explosion sound accompanied by a flash of light from occurring in the insulator device part, which not only prevents damage to the insulator due to high heat, but also allows transmission and distribution lines to be connected to private houses. Even when placed close together, sound, light,
This has the effect of eliminating concerns about secondary accidents due to pollution such as fire and destruction of insulators, etc., but in this invention, the electrode 2 on the support side provided at the tip of the horn main body 1 and the discharge electrode placed opposite thereto. Since both the side electrode 3 and the current limiting element 4a interposed between the two are molded into a thin jacket 5 made of an elastic insulating material, in the unlikely event that the current limiting element 4a deteriorates and the current limiting element 4a is Even if the function to block the flow is lost and a follow-on arc occurs between the electrode 2 on the supporting side and the electrode 3 on the emitting side, the mantle 5 will swell due to the pressure of the generated gas, and the side part of the mantle 5 will expand. Cracks will easily form and the generated gas will be released from the cracks, thus preventing an explosion caused by an increase in internal pressure. Further, since the elastic force of the conductive contact 7 is small in the mantle 5, elongation due to creep deformation hardly occurs. Furthermore, even if the mantle 5 were to elongate due to creep deformation for some reason and the current limiting elements 4a, 4a became separated as shown in FIG. 3, the bottomed hole provided in the current limiting element 4a A conductive contact 7 that is stably supported in a shaped contact support 8 and attempts to properly recover in the axial direction.
Since the current limiting elements 4a, 4a are brought into close contact with each other over almost the entire surface to maintain electrical continuity between them at all times, complete electrical continuity is always maintained.
本考案は前記説明からも明らかなように、限流
素子が従来のような有底筒体により密封されてい
ないため、何らかの原因により限流素子が劣化し
て続流を阻止する機能を失つた場合でも、続流ア
ークにより発生するガスの圧力が高圧になつて爆
発を起こすようなことがなく、破壊した部品が飛
散して公衆災害を招くこともないので、安全面に
優れたものである。また、万一絶縁体のクリープ
変形により限流素子と電極の接触が不完全となつ
たり完全に離れてしまつた場合においても、限流
素子相互間にあつて該限流素子に設けられた有底
穴状の接触子支持部に適確に支持された導電接触
子の復元力により偏荷重による素子破損なく電気
的接続を保つことができるから、良好な電気的特
性が長期にわたり安定して得られるものである。 As is clear from the above description, the current limiting element of the present invention is not sealed with a bottomed cylinder like the conventional one, so the current limiting element deteriorates due to some reason and loses its ability to prevent subsequent flow. Even in the event of an explosion, the pressure of the gas generated by the follow-on arc will not increase to high pressure and cause an explosion, and the destroyed parts will not scatter and cause a public disaster, so they are excellent in terms of safety. . In addition, even if the contact between the current limiting element and the electrode becomes incomplete or completely separated due to creep deformation of the insulator, the current limiting element provided between the current limiting elements will The restoring force of the conductive contact properly supported in the bottom hole-shaped contact support allows the electrical connection to be maintained without damage to the element due to unbalanced loads, ensuring good electrical characteristics for a long period of time. It is something that can be done.
従つて、本考案は在来のこの種限流ホーンの問
題点を解決したもので、有底筒体の使用がないた
め小型化できる利点と相まち、実用的価値極めて
大なものである。 Therefore, the present invention solves the problems of the conventional current-limiting horn of this type, and has an extremely large practical value since it does not use a bottomed cylinder and has the advantage of being compact.
第１図は本考案の第１の実施例を示す一部切欠
正面図、第２図は同じく要部の断面図、第３図は
外套体が伸びた状態において示す一部切欠正面
図、第４図、第５図はいずれも本考案の他の実施
例を示す一部切欠正面図である。
１：ホーン主体、２，３：電極、４ａ：限流素
子、５：外套体、７：導電接触子、７ａ：金属細
線、７ｂ：金属キヤツプ、８：有底穴状の接触子
支持部。
Fig. 1 is a partially cutaway front view showing the first embodiment of the present invention, Fig. 2 is a sectional view of the main parts, and Fig. 3 is a partially cutaway front view showing the mantle in an extended state. 4 and 5 are partially cutaway front views showing other embodiments of the present invention. 1: Horn main body, 2, 3: Electrode, 4a: Current limiting element, 5: Mantle, 7: Conductive contact, 7a: Fine metal wire, 7b: Metal cap, 8: Contact support part in the shape of a bottomed hole.
Claims (1)
極２とこれに対向させた放出側の電極３との間
に電圧電流特性が非直線性の材料よりなる限流
素子４ａを複数個重ねて介在させてこれらを弾
性絶縁材よりなる外套体５をもつて被覆し、前
記限流素子４ａ，４ａ間には相互の電気的導通
を常時保持させる導電接触子７を該限流素子４
ａに設けられた有底穴状の接触子支持部８に支
持させて設けたことを特徴とする限流ホーン。 ２ 導電接触子７をコイル状に巻かれた金属細線
よりなるものとした実用新案登録請求の範囲第
１項記載の限流ホーン。 ３ 導電接触子７を導電性ゴム短柱体とした実用
新案登録請求の範囲第１項記載の限流ホーン。 ４ 導電接触子７をコイル状に巻かれた金属細線
７ａとその端部に接触されて有底穴状の接触子
支持部８に沿い摺動できる金属キヤツプ７ｂと
よりなるものとした実用新案登録請求の範囲第
１項記載の限流ホーン。[Claims for Utility Model Registration] 1. A current limiting device made of a material with non-linear voltage-current characteristics between a support side electrode 2 provided at the tip of the horn main body 1 and a discharge side electrode 3 opposed thereto. A plurality of elements 4a are stacked and interposed, and these are covered with a jacket 5 made of an elastic insulating material, and a conductive contact 7 is provided between the current limiting elements 4a, 4a to maintain mutual electrical continuity at all times. The current limiting element 4
A current limiting horn characterized in that it is supported by a contact support part 8 in the form of a bottomed hole provided in a. 2. The current-limiting horn according to claim 1, wherein the conductive contact 7 is made of a thin metal wire wound into a coil. 3. The current limiting horn according to claim 1, in which the conductive contact 7 is a conductive rubber short column. 4. Registration of a utility model in which the conductive contact 7 is made up of a thin metal wire 7a wound into a coiled shape and a metal cap 7b that is in contact with the end of the wire and can slide along a bottomed hole-shaped contact support 8. A current-limiting horn according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981088199U JPS634349Y2 (en) | 1981-06-16 | 1981-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981088199U JPS634349Y2 (en) | 1981-06-16 | 1981-06-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57199914U JPS57199914U (en) | 1982-12-18 |
| JPS634349Y2 true JPS634349Y2 (en) | 1988-02-03 |
Family
ID=29883382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981088199U Expired JPS634349Y2 (en) | 1981-06-16 | 1981-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS634349Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136412A (en) * | 1979-04-12 | 1980-10-24 | Tokyo Electric Power Co | Insulator device |
-
1981
- 1981-06-16 JP JP1981088199U patent/JPS634349Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136412A (en) * | 1979-04-12 | 1980-10-24 | Tokyo Electric Power Co | Insulator device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57199914U (en) | 1982-12-18 |
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