JPH03150021A - Arrester fault indicator - Google Patents

Arrester fault indicator

Info

Publication number
JPH03150021A
JPH03150021A JP28619089A JP28619089A JPH03150021A JP H03150021 A JPH03150021 A JP H03150021A JP 28619089 A JP28619089 A JP 28619089A JP 28619089 A JP28619089 A JP 28619089A JP H03150021 A JPH03150021 A JP H03150021A
Authority
JP
Japan
Prior art keywords
fault
lightning arrester
failure
gap
current
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
Application number
JP28619089A
Other languages
Japanese (ja)
Inventor
Tetsuro Shimomura
哲朗 下村
Yusaku Horinouchi
雄作 堀之内
Masahiro Azuma
東 正弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP28619089A priority Critical patent/JPH03150021A/en
Publication of JPH03150021A publication Critical patent/JPH03150021A/en
Pending legal-status Critical Current

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  • Thermistors And Varistors (AREA)

Abstract

PURPOSE:To surely indicate a fault by connecting an electrical gap in series with an arrester and operating a fault indicating mechanism by a current flowing through a circuit comprising an inductance element, connected in parallel with the gap, and the inductance element. CONSTITUTION:When an arrester 5 functions on a surge voltage such as a lightning impulse, impedance of a reactor 23 increases because of the quite high frequency of the surge voltage and a high voltage is applied across a gap 21 thus causing flashover thereof. Consequently, lightning current flows from a casing 20 through the gap 21 to the arrester 5. When an inner fault occurs in the arrester 5 and an AC fault current having commercial frequency flows continuously, impedance of the reactor 23 lowers considerably thus lowering the voltage to be applied across the gap 21. Consequently, insulation is maintained and AC fault current flows through a circuit of the reactor 23 and a fusible wire 32.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は避雷器に内部故障が発生して所定以上の交流
故障電流が流れたとき故障表示a構を動作させるように
した避雷器故障表示装置に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a lightning arrester failure display device that operates a failure indication mechanism when an internal failure occurs in the lightning arrester and an AC fault current of a predetermined value or higher flows. It is something.

〔従来の技術〕[Conventional technology]

第7図は例えば特開昭5ロー159932号公報に開示
されたこの種従来の避雷器故障表示装置の要部を拡大し
て示す断面図、第8図はそれを送電鉄塔に取付けた場合
の構成図である。図において、(1)は送電鉄塔、■は
そのアーム、G1は懸垂碍子(イ)によってアーム(2
)の先端に取付けられた送電線、(へ)はアーム(2)
と送電線(3)との間に取付けられた避雷器で、以下、
この避雷器向とその故障表示装置の構造を第7図により
説明する、(へ)は避雷器(へ)の容器を構成する碍管
、口は碍管b)の上端外周にセメントで固着されたフラ
ンジ、8はフランジ(7)に螺合等により取付られ碍管
(6)の上端を開基する金属押え板で、その中央部は薄
膜状に形成されている。
FIG. 7 is an enlarged cross-sectional view showing the essential parts of a conventional lightning arrester failure display device of this kind disclosed in Japanese Patent Application Laid-Open No. 5-159932, and FIG. 8 shows the configuration when it is installed on a power transmission tower. It is a diagram. In the figure, (1) is the power transmission tower, ■ is its arm, and G1 is the arm (2) connected to the suspension insulator (a).
) is attached to the end of the power transmission line, (to) is the arm (2)
A lightning arrester installed between the power line and the power transmission line (3), as follows:
The structure of this lightning arrester and its fault display device will be explained with reference to FIG. is a metal holding plate which is attached to the flange (7) by screwing or the like and opens the upper end of the insulator tube (6), and the central part thereof is formed into a thin film shape.

19)は碍管(6)の上端面と金属押え板(6)との間
に挿入されたパツキン、(IIは碍管(61の内部に収
容されたZnO(酸化亜鉛)素子で、その一部はバネ(
11)および−絶縁筒(12)により金属押え板(へ)
に直接押し当てられている、 (13)は上方群のZn
O素子01と下方群のZnO素子01とを電気的に接続
するためのスプリング状の導体である。
19) is a gasket inserted between the upper end surface of the insulator tube (6) and the metal holding plate (6), (II is a ZnO (zinc oxide) element housed inside the insulator tube (61), a part of which is Spring(
11) and - the metal holding plate (to) by the insulating cylinder (12)
(13) is directly pressed against the upper group Zn
This is a spring-shaped conductor for electrically connecting the O element 01 and the ZnO elements 01 of the lower group.

そして、フランジ(7)の一部には下向きに噴出口(I
4)が形成されており、更に、一端がヒンジ(15)で
フランジ■に回動自在に装着され他端が止め具(16)
によりフランジ(7)に係止されて上記噴出口(14)
をrR塞するIt(17)が設けられている。
A part of the flange (7) has a downward spout (I).
4) is formed, and one end is rotatably attached to the flange ■ with a hinge (15), and the other end is a stopper (16).
The spout (14) is locked to the flange (7) by
It (17) is provided to block rR.

次に動作、特に避雷器(5)内のZnO素子α〔が破壊
した場合の故障表示の動作について説明する。ZnO素
子a1が破壊すると避雷器向が導通状態となり、常規対
地電圧によって交流の短絡電流が流入し短絡電流アーク
による発生ガスにより内圧が上昇する。また、この短絡
電流アークはZnO素子a1の側面に生じる。そして、
ZnO素子叫はバネ(11)で金属押え板6の中央部に
押し当てられており、更に。
Next, the operation, particularly the operation of failure indication when the ZnO element α in the lightning arrester (5) is destroyed, will be explained. When the ZnO element a1 is destroyed, the arrester becomes conductive, an alternating current short-circuit current flows in due to the normal ground voltage, and the internal pressure rises due to the gas generated by the short-circuit current arc. Further, this short circuit current arc occurs on the side surface of the ZnO element a1. and,
The ZnO element is pressed against the center of the metal holding plate 6 by a spring (11).

短絡電流アークは絶縁筒(12)内に生じるように規制
されているので、アークの先端が金属押え板(へ)の中
央部の薄膜状部分に達し、このアークのジュール熱によ
って上記薄膜状部分が溶融して穴があく、従って、碍管
(61内部に生じた高圧のガスは、上記穴からフランジ
(7)内に高速度で噴出され、噴出口(14)の出口に
取付けられたu(17)に吹付けられる。この衝撃力に
より!(17)は止め具(16)による係止から解除さ
れ、第7図に一点jIaで示す位置にぶら下がるので、
避雷器向の故障を外部から容易に発見することができる
。即ち、避雷器(へ)の故障表示がなされる訳である。
Since the short-circuit current arc is regulated to occur within the insulating tube (12), the tip of the arc reaches the thin film-like part at the center of the metal holding plate, and the Joule heat of this arc causes the thin film-like part to is melted and a hole is formed, so that the high pressure gas generated inside the insulator tube (61) is ejected at high speed from the hole into the flange (7), and the u( 17). Due to this impact force, !(17) is released from the lock by the stopper (16) and hangs at the position shown at a point jIa in FIG.
Failures in the lightning arrester can be easily detected from the outside. In other words, a failure of the lightning arrester is displayed.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

従来の避雷器故障表示装置は以上のように構成されてい
るので、故障表示のためには、金属押え板矧を溶融させ
更に発生圧力によってフランジmに設けたfi(17)
を動かすに十分な短絡電流アークのエネルギーが必要と
なる。しかるに、ZnO素子01の故障、破壊の状況は
必ずしも一律でなく、それによって交流故障電流も広範
囲にその値が分布することになり、この電流が小さい場
合、内部の圧力上昇や発熱量が不足して故障表示装置が
動作しないという問題点があった。
The conventional lightning arrester failure display device is constructed as described above, and in order to indicate the failure, a metal holding plate is melted and the generated pressure is applied to the fi(17) provided on the flange m.
Sufficient short-circuit current arc energy is required to move the . However, the failure and destruction conditions of ZnO element 01 are not necessarily uniform, and as a result, the value of the AC fault current is distributed over a wide range, and if this current is small, the internal pressure will rise and the amount of heat generated will be insufficient. There was a problem that the fault display device did not work.

この発明は、以上のような間層点を解消するためになさ
れたもので、その値が広範囲に分布する交流故障電流に
対して、確実な故障表示を行う避雷器故障表示装置を得
ることを目的とする。
This invention was made in order to eliminate the above-mentioned interlayer points, and aims to provide a lightning arrester fault display device that can reliably display a fault for AC fault currents whose values are widely distributed. shall be.

〔課題を解決するための手段および作用〕この発明に係
る避雷器故障表示装置は電気的なギャップを避雷器と直
列に接続するとともに、このギャップと並列に接続され
たインダクタンス要素とこのインダクタンス要素の回路
に流れる電流によって故障表示機構を動作させる故障表
示動作要素とを備えたものである。
[Means and effects for solving the problem] The lightning arrester fault display device according to the present invention connects an electrical gap in series with the lightning arrester, and also connects an inductance element connected in parallel with this gap and a circuit of this inductance element. and a fault display operating element that operates the fault display mechanism by a flowing current.

この場合、サージ電圧の侵入時にはその高い周波数から
上記インダクタンス要素には電流は流れず上記ギャップ
が放電し、これによって、避雷器は本来の保護動作を行
う。
In this case, when a surge voltage enters, no current flows through the inductance element due to its high frequency and the gap is discharged, whereby the arrester performs its original protective operation.

−避雷器が内部故障を発生して交流故障電流が流れると
、この電流は低周波のためインダクタンス要素により発
生する電圧は低くギャップは放電しない、従って上記交
流故障電流はインダクタンス要素の回路に継続して流れ
、この結果、故障表示動作要素が故障表示RtRを動作
させる。
- When an internal fault occurs in the lightning arrester and an AC fault current flows, since this current has a low frequency, the voltage generated by the inductance element is low and the gap does not discharge, so the AC fault current continues in the circuit of the inductance element. As a result, the fault indication activation element activates the failure indication RtR.

また、インダクタンス要素をリアクトルとし、故障表示
動作要素を上記リアクトルと直列に接続され故障表示機
構の駆動機構を係止する可溶線としたものでは、交流故
障電流の通−流によって上記可溶線が溶断して上記係止
を解除し故障表示amを動作させる。
In addition, when the inductance element is a reactor and the fault indication operation element is a fusible wire that is connected in series with the reactor and locks the drive mechanism of the fault indication mechanism, the fusible wire is fused by the flow of AC fault current. The lock is released and the malfunction display am is activated.

更に、インダクタンス要素を電磁石とし、故障表示動作
要素を上記電磁石と故障表示機構の駆動機構を係止し上
記電磁石の磁気吸引力で移動する可動部とで構成したも
のでは、交流故障電流の通流によって上記可動部が移動
して上記係止を解除し故障表示機構を動作させる。
Furthermore, in the case where the inductance element is an electromagnet and the fault display operation element is composed of the electromagnet and a movable part that locks the drive mechanism of the fault display mechanism and moves by the magnetic attraction force of the electromagnet, it is possible to conduct the AC fault current. The movable part moves to release the lock and operate the failure display mechanism.

〔実 施 例〕〔Example〕

第1図および第2図はこの発明の一実施例による避雷器
故障表示装置を示す断面図で、それぞれ前者は故障表示
動作前の状態、後者は同動作後の状態を示す、更に、第
3図は以上の避雷器故障表示装置を避雷器(へ)に装備
して実際に送電鉄塔に取付けた場合の構成図である。第
3図に示すように、この発明に係る避雷器故障表示装置
−(18)は避雷器【5)本来の下面に直接取付けられ
る。そして、避雷器(5)の下部端子は避雷器故障表示
装置111 (18)を経て取出され、懸垂碍子(イ)
で支持された送電線(3)とはタワミ導線(19)によ
って接続されている。
1 and 2 are cross-sectional views showing a lightning arrester fault display device according to an embodiment of the present invention, the former showing the state before the fault display operation, and the latter showing the state after the same operation. This is a configuration diagram when the above-mentioned lightning arrester failure display device is installed on a lightning arrester and actually installed on a power transmission tower. As shown in FIG. 3, the lightning arrester failure indicating device (18) according to the present invention is directly attached to the original lower surface of the lightning arrester [5]. Then, the lower terminal of the lightning arrester (5) is taken out through the lightning arrester fault display device 111 (18), and the suspension insulator (a)
It is connected to the power transmission line (3) supported by the sway conductor (19).

以下、第1図により、避雷器故障表示装置(!8)のを
i造の詳細を説明する。図において、(2(3)は導電
性金属を中空円筒状に形成したケースで、その上面は避
雷器(9の下部端子(詳細は図示せず)に固着され、そ
の下面には後述する電気的なギャップ(21)の一方の
電極である固定電極(22)が環状に形成されている、
 (23)は絶縁物(24)を介してケース(2(3)
内の底部に取付けられたインダクタンス要素としてのり
アクトルで、非磁性体で作られた円筒状の巻芯(25)
とこの巻芯(25)にトロイダル状に巻回されたコイル
(26)とから構成される装置(27)はケース(2(
3)内の上面中央に取f−tけられた内部絶縁筒で、図
に示すように、その途中に端子台(28)を備えた固定
板(29)が挿入固定されている。
Hereinafter, the details of the construction of the lightning arrester fault display device (!8) will be explained with reference to FIG. In the figure, (2 (3)) is a hollow cylindrical case made of conductive metal, the upper surface of which is fixed to the lower terminal (details not shown) of the lightning arrester (9), and the lower surface of which is connected to the electrical terminal (details not shown). A fixed electrode (22), which is one electrode of the gap (21), is formed in an annular shape.
(23) is connected to the case (2(3)) via the insulator (24).
A cylindrical winding core (25) made of non-magnetic material, with a glue actor as an inductance element attached to the bottom of the inner core (25).
A device (27) consisting of a coil (26) wound in a toroidal manner around this winding core (25) is connected to a case (2 (
3) An internal insulating cylinder installed at the center of the upper surface of the inside, as shown in the figure, a fixing plate (29) having a terminal block (28) in the middle thereof is inserted and fixed.

そして、リアクトル(23)の一端のリード線(3(3
)はケース(2(3)内の上面端部に電気的に接続され
、他端のリード線(31)は端子台(28)に接続され
ている。
Then, connect the lead wire (3 (3) at one end of the reactor (23)
) is electrically connected to the upper end of the case (2 (3)), and the lead wire (31) at the other end is connected to the terminal block (28).

(32)は所定以上の電流が流れると自己発熱して溶断
する故障表示動作要素としての可溶線で、その上端は端
子台(28)に固着され、その下端は円板状に形成され
た可動電極(33)に固着され、この可動電極(33)
は可溶線(32)の張力により内部絶縁筒(27)に圧
接されるようにして強固に係止、取付けられている.そ
して、前述したように、可動電極(33)と固定電極(
22)とでギャップ(21)を形成している。
(32) is a fusible wire as a fault display operating element that self-heats and melts when a current exceeding a certain level flows. Its upper end is fixed to the terminal block (28), and its lower end is a movable wire formed in a disc shape. Fixed to the electrode (33), this movable electrode (33)
is firmly fixed and attached by being pressed against the internal insulating cylinder (27) by the tension of the fusible wire (32). As mentioned above, the movable electrode (33) and the fixed electrode (
22) to form a gap (21).

即ち、電気回路的に説明すると、ギャップ(21)は避
雷器(ヘ)と直列に傍続され、リアクトル(23)と可
溶線(32)との直列体がギャップ(21)と並列に接
続されていることになる.更に、この可動電極(33)
はケース(2(3)の下面に設けられた支柱(34)で
支持されたタワミ導線(19)を経て送電!l(2)に
接続される。
That is, in terms of an electric circuit, the gap (21) is connected in series with the lightning arrester (F), and the series body of the reactor (23) and the fusible wire (32) is connected in parallel with the gap (21). There will be. Furthermore, this movable electrode (33)
is connected to the power transmission!l(2) via a swivel conductor (19) supported by a column (34) provided on the bottom surface of the case (2(3)).

次に動作について説明する.先ず、避雷器四が雷インパ
ルス等のサージ電圧で動作する場合には、その周波数が
極めて高いためリアクトル(23)のインピーダンスが
高くなり、ギャップ(21)は高電圧が印加されて閃絡
する.従って、送電線B)からタワミ導線(l9)を経
て流入する雷電流はりアクトル(23)および可溶I1
. (3 2)には流れず,ギャップ(21)を経てケ
ース(2(3)から避雷器(ヘ)へ流れることになる.
即ち、避雷器(ヘ)は本来のサージ保護動作を行う。
Next, we will explain the operation. First, when the lightning arrester 4 is operated by a surge voltage such as a lightning impulse, the impedance of the reactor (23) becomes high because the frequency is extremely high, and a high voltage is applied to the gap (21), causing a flash short circuit. Therefore, the lightning current beam actor (23) flowing from the power transmission line B) through the deflection conductor (l9) and the fusible I1
.. It does not flow to (3 2), but flows from the case (2 (3) to the arrester (f) via the gap (21).
That is, the lightning arrester (f) performs its original surge protection operation.

次に、避雷器(51に内部故障が発生して商用周波数の
交流故障電流が持続して流れると、この周波数は低くリ
アクトル(23)のインピーダンスは十分小さくなり、
ギャップ(21)は印加される電圧も低くその絶縁を維
持するので、交流故障電流はりアクトル(23)および
可溶,II(3 2)の回路に流れる.この結果、可溶
線(32)は自己の発熱で短時間のうちに溶断し、可動
電極(33)はこの可溶,11(3 2)による係止が
解除されてその重力により下方へ落下する。
Next, when an internal failure occurs in the lightning arrester (51) and a commercial frequency AC fault current continues to flow, this frequency is low and the impedance of the reactor (23) becomes sufficiently small.
Since the gap (21) maintains its insulation with a low applied voltage, the AC fault current flows into the circuit of the actor (23) and the fusible II (32). As a result, the fusible wire (32) melts in a short time due to its own heat generation, and the movable electrode (33) is released from the lock by the fusible wire (32) and falls downward due to its gravity. .

第2図はこの状態を示すもので(第3図では一点鎖線で
示す)、タワミ導線(l9)の先端に結合された可動電
極(33)は下方へ垂れ下がり、これが故障表示となる
訳である.図中、(32a)は溶断した可溶線(32)
の残存部分である.なお、上記した可溶線(32)の溶
断によって内部絶縁筒(27)内の圧力が上昇するので
、これが可動電極(33)の下方への離脱動作を促進す
ることになる.そして、この実施例では故障表示と同時
に避雷器(ヘ)が送電線Olから切り離され、以後の損
傷部分の拡大が防止される。
Figure 2 shows this state (indicated by a dashed line in Figure 3), where the movable electrode (33) connected to the tip of the deflecting conductor (19) hangs downward, which indicates a failure. .. In the figure, (32a) is the fused fusible wire (32)
This is the remaining part of . Note that the pressure within the internal insulating cylinder (27) increases due to the above-mentioned fusing of the fusible wire (32), which promotes the downward detachment of the movable electrode (33). In this embodiment, the lightning arrester (f) is disconnected from the power transmission line Ol at the same time as the failure is indicated, thereby preventing the damage from expanding thereafter.

また、第1図では図示していないが、例えば、内部絶縁
筒(27)内に、一端が固定された絶縁性のテープを収
容しておき、可動電極(33)の脱落と同時にこのテー
プが垂れ下がるようにすれば故障表示の外部からの発見
が一層容易となる。
Although not shown in FIG. 1, for example, an insulating tape with one end fixed is housed in the internal insulating cylinder (27), and this tape is released at the same time as the movable electrode (33) falls off. If it is made to hang down, it will be easier to detect the failure display from the outside.

更に、可動電極(33)を例えば赤色等周囲と異なる色
に着色することによっても、故障表示の効果を増大させ
ることができる。
Furthermore, the effect of failure indication can be increased by coloring the movable electrode (33) in a color different from the surroundings, such as red.

第4図および第5図は更に他の実施例に−よる避雷器故
障表示装置を示す断面図で、それぞれ前者は故障表示動
作前の状態、後者は同動作後の状態を示す、更に、第6
図は以上の避雷器故障表示装置を避雷器(へ)に装備し
て実際に送電鉄塔に取付けた場合の構成図である。ここ
では、避雷器故障表示装置(18)は取付導体(35)
により避雷器(5)の下部端子に取付は固定され、避雷
器故障表示装置(18)の他端側はタワミ導線(19)
を介して送電線(3]に接続されている。
4 and 5 are cross-sectional views showing a lightning arrester fault display device according to still another embodiment, the former showing the state before the fault display operation, and the latter showing the state after the same operation.
The figure is a configuration diagram when the above-mentioned lightning arrester failure display device is installed on a lightning arrester and actually installed on a power transmission tower. Here, the lightning arrester fault indicator (18) is connected to the mounting conductor (35).
The installation is fixed to the lower terminal of the lightning arrester (5), and the other end of the lightning arrester fault indicator (18) is connected to the deflection conductor (19).
It is connected to the power transmission line (3) via.

以下、第4図により避雷器故障表示装置(18)の構造
の詳細を説明する。図において、(36)は絶縁物を円
筒状に形成したケース、(37)は鉄等の磁性体でかつ
導電性の材料からなる固定電極で、その円板状部でケー
ス(36)の左端をW4塞するとともに取付導体(35
)を介して避雷器(5)の下部に取付固定されている。
Hereinafter, the details of the structure of the lightning arrester failure display device (18) will be explained with reference to FIG. In the figure, (36) is a case made of an insulator formed into a cylindrical shape, and (37) is a fixed electrode made of a magnetic and conductive material such as iron. W4 and the mounting conductor (35
) is attached and fixed to the lower part of the lightning arrester (5).

また、固定電極(37)の円柱状部の先端近傍は絶縁支
持板(38)で支持されるとともに、その先端は後述の
可動電極とでギャップ(39)を構成する。固定板(4
(3)は導電性材料からなりケース(36)の右端を閉
塞する固定板、(41)はケース(36)の内壁に固定
され中央に円筒状のガイド(42)を形成した絶縁物か
らなる固定板、(43)はその円柱状部がガイド(42
)に摺動可能に支持され軸方向に進退自在に構成された
可動部としての可:#J電極で、固定電極(37)と同
様、鉄等の磁性体でかつ導、電性の材料で構成されてい
る。(44)は可動電極(43)の円板状部と固定板(
4K)との間に圧縮状態で挿入された第1のバネで、可
動を % (43)をストッパー(45)に当接する位
置まで押圧している、 (46)は固定型[! (37
)の円柱状部の周囲に巻回されたインダクタンス要素と
してのコイルで、その一端は固定電極(37)に電気的
に接続され、他端は絶縁支持板(38)で支持されると
ともに更にリード線(47)を介して可動電極(43)
に電気的に接続されている。
Further, the vicinity of the tip of the cylindrical portion of the fixed electrode (37) is supported by an insulating support plate (38), and the tip forms a gap (39) with a movable electrode to be described later. Fixed plate (4
(3) is a fixed plate made of a conductive material and closes the right end of the case (36), and (41) is an insulator fixed to the inner wall of the case (36) with a cylindrical guide (42) formed in the center. The fixed plate (43) has a cylindrical part that is connected to the guide (42).
) is a movable part that is configured to move forward and backward in the axial direction. Similar to the fixed electrode (37), it is a #J electrode that is made of a magnetic material such as iron and a conductive or electrical material. It is configured. (44) is the disk-shaped part of the movable electrode (43) and the fixed plate (
(46) is a fixed type [! (37
) is a coil as an inductance element wound around the cylindrical part of the coil, one end of which is electrically connected to a fixed electrode (37), and the other end supported by an insulating support plate (38) and further connected to a lead. Movable electrode (43) via wire (47)
electrically connected to.

(48)は可動電極(43)と固定板(4(3)とを電
気的に接続するリード線、(49)はケース(36)の
下方に略矩形に形成された開口部に嵌め込むようにして
設けられた表示部で、ヒンジ(5(3)によりケース(
36)に回動自在に取付けられるとともに、ラッチ(5
1)により可動電極(43)に係止されている。(52
)は固定板(4(3)と表示部(49)との間に圧縮状
態で挿入された第2のバネで、その上端のみが固定板(
4(3)に固着されている。
(48) is a lead wire that electrically connects the movable electrode (43) and the fixed plate (4 (3)), and (49) is a lead wire that is fitted into a substantially rectangular opening formed below the case (36). In the display section provided, the case (
It is rotatably attached to the latch (5).
1) is locked to the movable electrode (43). (52
) is a second spring inserted in a compressed state between the fixing plate (4 (3) and the display part (49), and only its upper end is connected to the fixing plate (
4 (3) is fixed.

次に動作について説明する。先ず、避雷器(へ)が雷イ
ンパルス等のサージ電圧で動作する場合には、その周波
数が極めて高いため、コイル(46)のインピーダンス
が高くなり、ギャップ(39)は高電圧が印加されて閃
絡する。従って、送電線G)からタワミ導線(19)→
固定板(4(3)→リード線(48)→可動電極(43
)を経て流入する雷電流はコイル(46)には流れず、
ギャップ(3つ)および固定電極(37)を経て取付導
体(35)から避雷器(へ)へ流れることになる。
Next, the operation will be explained. First, when the lightning arrester operates with a surge voltage such as a lightning impulse, the frequency is extremely high, so the impedance of the coil (46) becomes high, and a high voltage is applied to the gap (39), causing a flashover. do. Therefore, from the power transmission line G) to the deflection conductor (19) →
Fixed plate (4 (3) → Lead wire (48) → Movable electrode (43)
) does not flow into the coil (46),
It will flow from the mounting conductor (35) to the lightning arrester (to) via the gaps (three) and the fixed electrode (37).

即ち、避雷器(へ)は本来のサージ保護動作を行う。That is, the lightning arrester performs its original surge protection operation.

次に、避雷器(へ)に内部故障が発生して商用周波数の
交流故障電流が持続して流れると、この周波数は低くコ
イル(46)のインピーダンスは十分小さくなり、ギャ
ップ(39)は印加される電圧も低くその絶縁を維持す
るので、交流故障電流はコイル(46)の回路に流れる
。この結果、コイル(46)と固定電極(37)の円柱
状部とで電磁石を構成し、この磁気吸引力により第1の
バネ(44)に抗して可動電極(43)を左方へ吸引移
動させる。更に、上記電磁石(46) (37)と可動
電極(43)とにより故障表示動作要素を構成し、可動
電極(43)の移動でラッチ(51)による係止が解除
され、表示部(49)の右端が第2のバネ(52)の蓄
勢力で下方へ押し出される。第5図はこの状態を示すも
ので(第6図では一点鎖線で示す)、表示部(49)は
ヒンジ(5(3)を中心に大きく下方へ回動し、故障の
発生が外部から確実に検知される。
Next, when an internal fault occurs in the lightning arrester (to) and a commercial frequency AC fault current continues to flow, this frequency is low and the impedance of the coil (46) becomes sufficiently small, and the gap (39) is applied. Since the voltage is also low to maintain its insulation, the AC fault current flows in the circuit of the coil (46). As a result, the coil (46) and the cylindrical part of the fixed electrode (37) constitute an electromagnet, and this magnetic attraction force attracts the movable electrode (43) to the left against the first spring (44). move it. Further, the electromagnets (46) (37) and the movable electrode (43) constitute a failure display operating element, and movement of the movable electrode (43) releases the latch (51), and the display section (49) The right end of is pushed downward by the stored force of the second spring (52). Figure 5 shows this state (indicated by a dashed line in Figure 6), where the display section (49) rotates significantly downwards around the hinge (5 (3)), and the occurrence of a failure can be confirmed from the outside. is detected.

なお、上記実施例では避雷器故障表示装置(18)を取
付導体(35)を介して避雷器(へ)に取付けるよう−
にしたが、直接避雷器(9の下部に取C寸けるようにし
てもよい、また、表示部(49)も1個でなく複数個設
けるようにすれば、故障表示の発見がより容易となる。
In the above embodiment, the lightning arrester failure display device (18) is attached to the lightning arrester (to) via the mounting conductor (35).
However, if the lightning arrester (9) can be installed directly at the bottom of the lightning arrester (9), and if multiple display sections (49) are provided instead of one, it will be easier to find fault indications. .

更に、既述の実施例と同様、表示部(49)を特別の色
に着色するようにしてもよい。
Furthermore, as in the previously described embodiments, the display section (49) may be colored in a special color.

また、故障表示動作要素としては、第1図や第4図に示
したちの以外に、例えば、故障時インダクタンス要素に
流れる電流を光に変換し、これをもって故障表示とする
等、種々の方式のものを採用するようにしてもよい。
Furthermore, in addition to the elements shown in Figures 1 and 4, there are various types of failure indication operating elements, such as converting the current flowing through an inductance element in the event of a failure into light, which is used as a failure indication. You may choose to adopt something.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明では、ギャップを避雷器と直列
に接続するとともに、このギャップと並列に接続された
インダクタンス要素と所定の故障表示動作要素とを備え
、特に故障発生時にのみ上記インダクタンス要素に交流
故障電流が流れるようにしたので、故障の判別とその表
示を確実に行うことができる。
As described above, in this invention, a gap is connected in series with a lightning arrester, and an inductance element and a predetermined failure indicating operation element are connected in parallel with the gap, and in particular, only when a failure occurs, an alternating current is applied to the inductance element. Since the fault current is allowed to flow, it is possible to reliably determine the fault and display it.

また、リアクトルと可溶線とを備えたものでは、より広
い範囲の交流故障電流に対しても故障表示を確実に行う
ことができる。
Further, in the case of a device equipped with a reactor and a fusible wire, a fault can be reliably displayed even for a wider range of AC fault currents.

更に、電磁石と可動電極とを備えたものでも、同様に、
広範囲の交流故障電流に対して故障表示を確実に行うこ
とができる。
Furthermore, even those equipped with an electromagnet and a movable electrode,
Fault indication can be reliably performed for a wide range of AC fault currents.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図および第2図はこの発明の一実施例による避雷器
故障表示装置をそれぞれその故障表示動作前後で示す断
面図、第3図は上記の故障表示装置を送電鉄塔に取付け
た場合の構成図、第4図。 第5図および第6図は他の実施例による避雷器故障表示
装置を示す同様の断面図および構成図、第7図は従来の
避雷器故障表示装置を示す断面図、第8図はその故障表
示装置を送電鉄塔に取付けた場合の構成図である。 図において、(5)は避雷器、(18)は避雷器故障表
示装置、(21) (39)はギャップ、(23)はり
アクトル、(32)は可溶線、(22) (37)は固
定電極、(33) (43)は可動電極、(46)はコ
イル、(49)は表示部である。 なお、各図中同一符号は同一または相当部分を示す。 代理人 弁理士 大 岩 増 雄− 第1図 リス・ +1 フ 71−ル 33:  奸!7]を恥M 第2図 1       /        ト・几 第3図 り             1 第6図 り           11 〃− ″′a2迂m1胃;− 第7図 第8図
1 and 2 are sectional views showing a lightning arrester fault display device according to an embodiment of the present invention before and after the fault display operation, respectively, and FIG. 3 is a configuration diagram when the above fault display device is installed on a power transmission tower. , FIG. 4. 5 and 6 are similar cross-sectional views and configuration diagrams showing a lightning arrester fault display device according to another embodiment, FIG. 7 is a cross-sectional view showing a conventional lightning arrester fault display device, and FIG. 8 is a similar fault display device. FIG. 3 is a configuration diagram when the is installed on a power transmission tower. In the figure, (5) is a lightning arrester, (18) is a lightning arrester failure indicator, (21) and (39) are gaps, (23) is a beam actor, (32) is a fusible wire, (22) and (37) are fixed electrodes, (33) (43) is a movable electrode, (46) is a coil, and (49) is a display section. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Patent Attorney Masuo Oiwa - Figure 1 Lis +1 F 71- Rule 33: Scam! 7] be ashamed M Fig. 2 1 / To・几 3rd drawing 1 6th drawing 11 〃- ″'a2 around m1 stomach;- Fig. 7 Fig. 8

Claims (3)

【特許請求の範囲】[Claims] (1)避雷器に内部故障が発生して所定以上の交流故障
電流が流れたとき故障表示機構を動作させるようにした
ものにおいて、 電気的なギャップを上記避雷器と直列に接続するととも
に、このギャップと並列に接続されたインダクタンス要
素とこのインダクタンス要素の回路に流れる電流によっ
て上記故障表示機構を動作させる故障表示動作要素とを
備え、サージ電圧の侵入時にはその高い周波数により上
記ギャップを放電せしめ、上記避雷器の内部故障発生時
には上記交流故障電流を上記インダクタンス要素の回路
に通流せしめ上記故障表示機構を動作させるようにした
ことを特徴とする避雷器故障表示装置。
(1) In a device that operates a fault display mechanism when an internal fault occurs in the lightning arrester and an AC fault current exceeding a specified level flows, an electrical gap is connected in series with the lightning arrester, and It is equipped with an inductance element connected in parallel and a failure indication operation element that operates the failure indication mechanism by the current flowing through the circuit of this inductance element, and when a surge voltage enters, the gap is discharged by its high frequency and the surge arrester 1. A lightning arrester fault display device, characterized in that when an internal fault occurs, the alternating current fault current is made to flow through the circuit of the inductance element to operate the fault display mechanism.
(2)インダクタンス要素をリアクトルとし、故障表示
動作要素を上記リアクトルと直列に接続され故障表示機
構の駆動機構を係止する可溶線とし、交流故障電流の通
流によって上記可溶線を溶断せしめて上記係止を解除し
て上記故障表示機構を動作させるようにしたことを特徴
とする請求項1記載の避雷器故障表示装置。
(2) The inductance element is a reactor, the failure indication operating element is a fusible wire connected in series with the reactor and locking the drive mechanism of the failure indication mechanism, and the fusible wire is melted and cut by passing an alternating current failure current to 2. The lightning arrester failure display device according to claim 1, wherein the failure indication mechanism is operated by releasing the lock.
(3)インダクタンス要素を電磁石とし、故障表示動作
要素を上記電磁石と故障表示機構の駆動機構を係止し上
記電磁石の磁気吸引力で移動する可動部とで構成し、交
流故障電流の通流によって上記可動部を移動せしめて上
記係止を解除して上記故障表示機構を動作させるように
したことを特徴とする請求項1記載の避雷器故障表示装
置。
(3) The inductance element is an electromagnet, and the fault display operating element is composed of the electromagnet and a movable part that locks the drive mechanism of the fault display mechanism and moves by the magnetic attraction force of the electromagnet, and is activated by passing an alternating current fault current. 2. The lightning arrester failure display device according to claim 1, wherein the movable part is moved to release the lock and operate the failure indication mechanism.
JP28619089A 1989-11-01 1989-11-01 Arrester fault indicator Pending JPH03150021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28619089A JPH03150021A (en) 1989-11-01 1989-11-01 Arrester fault indicator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28619089A JPH03150021A (en) 1989-11-01 1989-11-01 Arrester fault indicator

Publications (1)

Publication Number Publication Date
JPH03150021A true JPH03150021A (en) 1991-06-26

Family

ID=17701118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28619089A Pending JPH03150021A (en) 1989-11-01 1989-11-01 Arrester fault indicator

Country Status (1)

Country Link
JP (1) JPH03150021A (en)

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