JP2006084352A - Operation tool for diagnosing current limiting arcing horn degradation, and current limiting arcing horn degradation diagnostic device - Google Patents

Operation tool for diagnosing current limiting arcing horn degradation, and current limiting arcing horn degradation diagnostic device Download PDF

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JP2006084352A
JP2006084352A JP2004270297A JP2004270297A JP2006084352A JP 2006084352 A JP2006084352 A JP 2006084352A JP 2004270297 A JP2004270297 A JP 2004270297A JP 2004270297 A JP2004270297 A JP 2004270297A JP 2006084352 A JP2006084352 A JP 2006084352A
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lightning
horn
measurement terminal
side measurement
operation tool
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Junzo Takemura
順三 武村
Hirokazu Ogawa
洋和 小川
Tetsuya Asukai
哲也 飛鳥井
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NGK Insulators Ltd
Chubu Electric Power Co Inc
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NGK Insulators Ltd
Chubu Electric Power Co Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an operation tool for diagnosing a current limiting arcing horn degradation and a current limiting arcing horn degradation diagnostic device making current limiting arcing horn degradation diagnosis where the current limiting arcing horn is mounted to a lightning protection insulator device. <P>SOLUTION: A ground side terminal 24 can move in the separating direction X or approaching direction Y with respect to a charge side measuring terminal 16. An upper electrode section 7 and a lower electrode section 6 of a current limiting arcing horn 5 can be gripped by the charge side measuring terminal 16 and the ground side terminal 24, so that the operation tool 11 for diagnosing the current limiting arcing horn degradation can be easily mounted to the current limiting arcing horn 5. The degradation of the current limiting arcing horn 5 is diagnosed by a measuring instrument 31 where the operation tool 11 is mounted to the current limiting arcing horn 5 and is connected to lead wires 19a and 19b introduced from the charge side measuring terminal 16 and the ground side terminal 24. Therefore, the degradation of the current limiting arcing horn 5 can be diagnosed while the current limiting arcing horn 5 is mounted to the lightning protection insulator device 1 without removing the current limiting arcing horn 5 from the lightning protection insulator device 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、送配電線路に雷サージ電流が流れた場合に、それを大地へ速やかに放電すると共に、その後に生じる続流を抑制遮断する耐雷ホーンの劣化診断を行うための耐雷ホーン劣化診断用操作具及び耐雷ホーン劣化診断装置に関するものである。   The present invention is for lightning horn deterioration diagnosis for diagnosing lightning horn deterioration that discharges lightning surge current to the ground quickly and suppresses and interrupts the subsequent current flow when a lightning surge current flows in the transmission and distribution line. The present invention relates to an operation tool and a lightning-resistant horn deterioration diagnosis device.

従来、雷撃により送配電線路に侵入した雷サージ電流を速やかに大地へ放電する避雷碍子装置が配設されている。この避雷碍子装置は、支持碍子及び耐雷ホーンを備えている。該耐雷ホーンは、取付け金具により支持碍子に固定されている。また、耐雷ホーンは、酸化亜鉛を主材とする限流素子から形成されており、該限流素子は、商用周波電圧程度ではほとんど電流が流れず、雷サージのような過大な電圧をうけた時、電流が急激に増える非直線性を有する。このため、雷撃により送配電線路に雷サージ電流が侵入した場合、その電流は電線から耐雷ホーンを介して大地に放電される。さらに、耐雷ホーンはその後に発生する続流（放電が継続する現象）を抑制遮断する（例えば、特許文献１参照。）。   2. Description of the Related Art Conventionally, a lightning arrester is provided that quickly discharges a lightning surge current that has entered a power transmission and distribution line due to a lightning strike to the ground. This lightning protection lever device includes a support lever and a lightning proof horn. The lightning proof horn is fixed to the support insulator by a mounting bracket. The lightning-resistant horn is formed of a current limiting element mainly composed of zinc oxide, and the current limiting element hardly receives a current at a commercial frequency voltage level, and receives an excessive voltage such as a lightning surge. Sometimes it has non-linearity in which the current increases rapidly. For this reason, when a lightning surge current enters the transmission and distribution line due to a lightning strike, the current is discharged from the electric wire to the ground via a lightning proof horn. Further, the lightning proof horn suppresses and interrupts a subsequent flow (a phenomenon in which discharge continues) that occurs thereafter (see, for example, Patent Document 1).

このため、耐雷ホーンは常に一定の電気的性能を保持していなければならず、該耐雷ホーンの点検及び診断を必要としていた。耐雷ホーンの劣化診断は、前記耐雷ホーンを避雷碍子装置から取り外して行われる。即ち、従来、作業者は、高所作業車等により耐雷ホーンが備えられた場所まで行き、該耐雷ホーンを取り外して絶縁抵抗、バリスタ電圧、制限電圧、放電耐量、続流遮断等の電気的性能診断を行っていた。
実公平１−２９９３４号公報 For this reason, the lightning-resistant horn must always maintain a certain electrical performance, and the lightning-resistant horn has to be inspected and diagnosed. The deterioration diagnosis of the lightning proof horn is performed by removing the lightning proof horn from the lightning protection insulator device. In other words, conventionally, an operator goes to a place equipped with a lightning proof horn by an aerial work vehicle or the like, and removes the lightning proof horn so that the electrical performance such as insulation resistance, varistor voltage, limit voltage, discharge withstand capability, and continuity interruption I was making a diagnosis.
No. 1-29394

ところが、前記従来の耐雷ホーンの劣化診断方法では、耐雷ホーンを避雷碍子装置から取り外さなければならず、さらには、この作業を行う際、安全のため停電をさせていたため、作業が非常に煩雑で作業効率が非常に悪いものであった。このため、前記耐雷ホーンを避雷碍子装置に装着したまま、当該耐雷ホーンの劣化診断を行うことが所望されていた。   However, in the conventional method for diagnosing degradation of a lightning-resistant horn, the lightning-resistant horn must be removed from the lightning protection device, and furthermore, when performing this operation, a power outage was performed for safety, so the operation was very complicated. The work efficiency was very bad. For this reason, it has been desired to perform a deterioration diagnosis of the lightning proof horn while the lightning proof horn is mounted on the lightning protection insulator device.

本発明は上記問題点を解決するためになされたものであって、その目的は、耐雷ホーンを避雷碍子装置に装着した状態で耐雷ホーン劣化診断を行うことができる耐雷ホーン劣化診断用操作具及び耐雷ホーン劣化診断装置を提供することにある。   The present invention has been made to solve the above-described problems, and its purpose is to provide an operation tool for lightning-resistant horn deterioration diagnosis capable of performing lightning-resistant horn deterioration diagnosis in a state where the lightning-resistant horn is mounted on a lightning protection insulator device, and An object of the present invention is to provide a lightning-resistant horn deterioration diagnosis device.

上記問題点を解決するために、請求項１に記載の発明は、雷撃により送配電線路に侵入した雷サージ電流を大地へ放電する避雷碍子装置に備えられた耐雷ホーンの劣化を診断するために装着する耐雷ホーン劣化診断用操作具であって、操作棒と、該操作棒の先端に前記耐雷ホーンの上部電極部に装着可能に設けられた課電側測定端子と、同じく前記操作棒の先端に前記耐雷ホーンの下部電極部に装着可能に且つ、課電側測定端子に対して近接又は離間する方向へ移動可能に設けられた接地側測定端子と、前記課電側測定端子及び接地側測定端子のそれぞれから導出されて耐雷ホーンの電気的性能を測定する計測器に接続されるリード線とを備えたことを要旨とする。   In order to solve the above-mentioned problems, the invention described in claim 1 is for diagnosing deterioration of a lightning proof horn provided in a lightning arrester that discharges a lightning surge current that has entered a power transmission and distribution line by lightning to the ground. An operation tool for diagnosing lightning-resistant horn deterioration to be mounted, comprising an operating rod, a charging-side measuring terminal provided at the tip of the operating rod so as to be attachable to the upper electrode portion of the lightning-proof horn, and the tip of the operating rod. A ground side measurement terminal that can be attached to the lower electrode portion of the lightning proof horn and can be moved in a direction close to or away from the power application side measurement terminal, and the power application side measurement terminal and the ground side measurement. The gist of the present invention is to provide a lead wire that is led out from each of the terminals and connected to a measuring instrument that measures the electrical performance of the lightning proof horn.

請求項２に記載の発明は、請求項１に記載の耐雷ホーン劣化診断用操作具において、前記接地側測定端子を常に課電側測定端子側へ付勢する付勢手段を備えたことを要旨とする。   The invention according to claim 2 is the lightning horn deterioration diagnosis operation tool according to claim 1, further comprising an urging means for always urging the ground side measurement terminal toward the power application side measurement terminal. And

請求項３に記載の発明は、請求項２に記載の耐雷ホーン劣化診断用操作具において、前記操作棒には、当該接地側測定端子の移動可能範囲における離間する方向の端部に、前記接地側測定端子を係止する係止手段が設けられていることを要旨とする。   According to a third aspect of the present invention, in the lightning-resistant horn deterioration diagnosis operation tool according to the second aspect, the operation rod is connected to the grounding end portion in the movable direction of the grounding-side measurement terminal. The gist is that a locking means for locking the side measurement terminal is provided.

請求項４に記載の発明は、請求項３に記載の耐雷ホーン劣化診断用操作具において、前記係止手段は、前記操作棒において、前記近接又は離間する方向と直交するように設けられた係止溝と、該係止溝内を移動すると共に前記接地側測定端子と一体に移動する電極支持棒に取り付けられた操作ハンドルとを備えたことを要旨とする。   According to a fourth aspect of the present invention, there is provided the lightning horn deterioration diagnosis operation tool according to the third aspect, wherein the locking means is provided on the operation rod so as to be orthogonal to the approaching or separating direction. The gist is provided with a stop groove and an operation handle attached to an electrode support rod that moves in the locking groove and moves integrally with the ground-side measurement terminal.

請求項５に記載の発明は、請求項１〜請求項４のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具において、前記操作棒の先端には課電側測定端子を支持する課電側測定端子支持部を突設し、該課電側測定端子支持部には耐雷ホーンの外周面に支持案内するガイド部を設けたことを要旨とする。   According to a fifth aspect of the present invention, in the lightning-resistant horn deterioration diagnosis operation tool according to any one of the first to fourth aspects, a charge-side measuring terminal is supported at the tip of the operation rod. The gist of the present invention is that a power-side measurement terminal support portion is provided in a protruding manner, and a guide portion that supports and guides the outer peripheral surface of the lightning proof horn is provided in the power-supply side measurement terminal support portion.

請求項６に記載の発明は、請求項１〜請求項５のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具において、前記課電側測定端子において、前記耐雷ホーンの上部電極部と接触する接触部が露出するように該課電側測定端子の外周面を絶縁体により覆うようにしたことを要旨とする。   The invention according to claim 6 is the lightning horn degradation diagnostic operation tool according to any one of claims 1 to 5, wherein the lightning side measurement terminal includes an upper electrode portion of the lightning proof horn; The gist is that the outer peripheral surface of the power-applying measurement terminal is covered with an insulator so that the contact portion that comes into contact is exposed.

請求項７に記載の発明は、請求項１〜請求項６のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具と、該耐雷ホーン劣化診断用操作具に接続される計測器とを備えたことを要旨とする。   The invention described in claim 7 includes the lightning horn deterioration diagnosis operation tool according to any one of claims 1 to 6 and a measuring instrument connected to the lightning resistance horn deterioration diagnosis operation tool. The summary is provided.

（作用）
請求項１に記載の発明によれば、接地側測定端子は、課電側測定端子に対して近接又は離間する方向へ移動可能となっている。このため、課電側測定端子及び接地側測定端子により耐雷ホーンの上部電極部及び下部電極部を挟み込むだけで、耐雷ホーン劣化診断用操作具を耐雷ホーンに容易に装着することができる。耐雷ホーンの劣化診断は、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着して、課電側測定端子及び接地側測定端子から導出されたリード線を計測器に接続することにより診断可能となる。したがって、耐雷ホーンを避雷碍子装置から取り外す必要はなく、避雷碍子装置に装着した状態で、耐雷ホーンの劣化診断を行うことができる。 (Function)
According to the first aspect of the present invention, the ground-side measurement terminal can be moved in the direction of approaching or separating from the power-applying-side measurement terminal. For this reason, it is possible to easily attach the lightning proof horn deterioration diagnosis operation tool to the lightning proof horn by simply sandwiching the upper electrode portion and the lower electrode portion of the lightning proof horn between the power application side measurement terminal and the ground side measurement terminal. Degradation diagnosis of the lightning proof horn can be diagnosed by attaching the lightning proof horn deterioration diagnosis operation tool to the lightning proof horn and connecting the lead wires derived from the charging side measurement terminal and the ground side measurement terminal to the measuring instrument. . Therefore, it is not necessary to remove the lightning-resistant horn from the lightning-protecting insulator device, and the deterioration diagnosis of the lightning-resistant horn can be performed with the lightning-protecting horn device mounted.

請求項２に記載の発明によれば、請求項１に記載の発明の作用に加えて、付勢手段によって接地側測定端子は常に課電側測定端子側に付勢されている。このため、課電側測定端子及び接地側測定端子によって耐雷ホーンの上部電極部及び下部電極部を確実に挟みこむことが可能となる。また、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着した状態において、上部電極部と課電側測定端子との接触圧、及び下部電極部と接地側測定端子との接触圧がそれぞれ確保され、耐雷ホーンの劣化診断精度が向上する。   According to the invention described in claim 2, in addition to the operation of the invention described in claim 1, the ground side measurement terminal is always urged to the power application side measurement terminal by the urging means. For this reason, it becomes possible to pinch | interpose the upper electrode part and lower electrode part of a lightning proof horn reliably by a power-applying side measurement terminal and a ground side measurement terminal. In addition, in the state where the lightning horn deterioration diagnosis operation tool is mounted on the lightning proof horn, the contact pressure between the upper electrode part and the charging side measurement terminal, and the contact pressure between the lower electrode part and the ground side measurement terminal are secured, respectively. Improves the accuracy of lightning horn degradation diagnosis.

請求項３に記載の発明によれば、請求項２に記載の発明の作用に加えて、当該接地側測定端子の移動可能範囲における課電側測定端子に対する離間側の端部に接地側測定端子を係止することができる。このため、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着する際、課電側測定端子と接地側測定端子とが耐雷ホーンの全長よりも大きく離間するように、前記接地側測定端子を係止手段によって係止する。そして、課電側測定端子を上部電極部に当接させた状態で係止手段の係止を外す。すると、接地側測定端子は付勢手段の付勢力により課電側測定端子に近接する方向へ移動して、接地側測定端子は下部電極部に当接する（近接位置）。したがって、課電側測定端子及び接地側測定端子の耐雷ホーンへの取付け作業、ひいては耐雷ホーンの劣化診断作業をスムーズに行うことができる。   According to the invention described in claim 3, in addition to the operation of the invention described in claim 2, the ground-side measurement terminal is provided at the end of the ground-side measurement terminal that is away from the power-applying-side measurement terminal in the movable range. Can be locked. For this reason, when mounting the lightning proof deterioration diagnosing operation tool to the lightning proof horn, the grounding side measurement terminal is locked so that the power application side measurement terminal and the ground side measurement terminal are separated from each other by more than the total length of the lightning proof horn. Lock by means. Then, the locking means is unlocked in a state where the power application side measurement terminal is in contact with the upper electrode portion. Then, the ground side measurement terminal is moved in the direction close to the power application side measurement terminal by the urging force of the urging means, and the ground side measurement terminal comes into contact with the lower electrode portion (proximity position). Therefore, it is possible to smoothly perform the work of attaching the measuring side measuring terminal and the grounding side measuring terminal to the lightning proof horn, and consequently the lightning proof deterioration diagnosing work.

請求項４に記載の発明によれば、請求項３に記載の発明の作用に加えて、接地側測定端子及び電極支持棒は操作ハンドルの移動方向に一体的に移動する。このため、耐雷ホーン診断用操作具の耐雷ホーンへの着脱は操作ハンドルを操作することにより、容易に行われる。例えば耐雷ホーン劣化診断用操作具を耐雷ホーンへ装着させる場合、前記操作ハンドルを操作することにより課電側測定端子と接地側測定端子との間隔を耐雷ホーンの全長よりも大きく離間させる（離間位置）。また、該操作ハンドルを係止溝に係止することができる。このため、操作ハンドルを係止溝に係止させることで、前記接地側測定端子を離間位置に保持させることができる。そして、操作ハンドルを係止溝から外すことにより、接地側測定端子は近接方向へと移動する。よって、耐雷ホーン劣化診断用操作具を容易に耐雷ホーンへ装着することができる。また、耐雷ホーン劣化診断用操作具を耐雷ホーンから取り外す場合、前記装着させる場合と同様に、前記操作ハンドルを操作することにより課電側測定端子と接地側測定端子との間隔を耐雷ホーンの全長よりも大きく離間させる。このようにして、耐雷ホーン劣化診断用操作具を容易に耐雷ホーンから取り外すことができる。   According to the invention described in claim 4, in addition to the operation of the invention described in claim 3, the ground side measurement terminal and the electrode support bar move integrally in the moving direction of the operation handle. For this reason, the lightning proof horn diagnostic operation tool can be easily attached to and detached from the lightning proof horn by operating the operation handle. For example, when attaching a lightning proof deterioration diagnosing operation tool to the lightning proof horn, the distance between the charging side measurement terminal and the ground side measurement terminal is made larger than the total length of the lightning proof horn by operating the operation handle (separation position). ). Further, the operation handle can be locked in the locking groove. For this reason, the grounding side measurement terminal can be held at the separated position by locking the operation handle in the locking groove. Then, by removing the operation handle from the locking groove, the ground side measurement terminal moves in the proximity direction. Therefore, the lightning resistant horn deterioration diagnosis operation tool can be easily attached to the lightning resistant horn. Also, when removing the lightning resistant horn deterioration diagnostic operation tool from the lightning resistant horn, as in the case of attaching the lightning resistant horn, the distance between the charging side measuring terminal and the ground side measuring terminal is adjusted by operating the operation handle. The distance is larger than that. In this way, the lightning horn deterioration diagnosis operating tool can be easily detached from the lightning proof horn.

請求項５に記載の発明によれば、請求項１〜請求項４のうちいずれか一項に記載の発明の作用に加えて、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着する際、ガイド部により耐雷ホーンの外周面に支持案内されることにより、耐雷ホーン劣化診断用操作具の耐雷ホーンに対する装着作業が簡単になる。このため、耐雷ホーンの劣化診断作業の準備をスムーズに行うことができる。また、前記ガイド部により耐雷ホーン劣化診断用操作具が安定する。このため、作業効率がいっそう向上する。   According to the invention described in claim 5, in addition to the operation of the invention described in any one of claims 1 to 4, when the lightning horn deterioration diagnosis operation tool is mounted on the lightning proof horn, a guide is provided. By being supported and guided on the outer peripheral surface of the lightning proof horn by the portion, the operation of mounting the lightning proof deterioration diagnosing operation tool on the lightning proof horn is simplified. For this reason, it is possible to smoothly prepare for the lightning horn degradation diagnosis work. Further, the lightning horn deterioration diagnosis operation tool is stabilized by the guide portion. For this reason, work efficiency improves further.

請求項６に記載の発明によれば、請求項１〜請求項５のうちいずれか一項に記載の発明の作用に加えて、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着する際、課電側測定端子の上部電極部以外のものとの絶縁が確保される。課電側測定端子において絶縁体によって覆われている部位が、例えば送配電線に触れても耐雷ホーン劣化診断用操作具に電流が流れることがない。また、耐雷ホーン劣化診断用操作具を耐雷ホーンに装着する際、送配電線や他の配電機器への接触を過度に気にする必要がないので、耐雷ホーン劣化診断用操作具の耐雷ホーンへの装着作業効率も向上する。   According to the invention described in claim 6, in addition to the operation of the invention described in any one of claims 1 to 5, when the lightning horn deterioration diagnosis operation tool is mounted on the lightning proof horn, Insulation from other than the upper electrode portion of the power-side measurement terminal is ensured. Even if the part covered with the insulator in the charging side measurement terminal touches the transmission / distribution line, for example, current does not flow to the lightning horn degradation diagnosis operation tool. In addition, when attaching the lightning proof horn deterioration diagnosis operation tool to the lightning proof horn, there is no need to worry excessively about contact with the power transmission and distribution lines and other power distribution equipment. The mounting work efficiency is improved.

請求項７に記載の発明によれば、耐雷ホーン劣化診断装置には、請求項１〜請求項６のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具と計測器とが備えられている。該計測器は、例えば耐雷ホーン劣化診断のための各種機能及びデータを備えている。このため、該計測器は、耐雷ホーン劣化診断に最適な仕様となっている。したがって、このような計測器を耐雷ホーン劣化診断用操作具とセットで供給することにより、耐雷ホーンの劣化診断作業をスムーズに行うことができる。   According to the invention described in claim 7, the lightning resistant horn deterioration diagnosis device includes the lightning resistant horn deterioration diagnosis operation tool and the measuring instrument according to any one of claims 1 to 6. Yes. The measuring instrument has various functions and data for, for example, lightning-resistant horn deterioration diagnosis. For this reason, the measuring instrument has an optimum specification for lightning-resistant horn deterioration diagnosis. Therefore, by supplying such a measuring instrument as a set with the lightning proof deterioration diagnosing operation tool, it is possible to smoothly perform the lightning proof deterioration diagnosis work.

本発明によれば、耐雷ホーンを避雷碍子装置に装着した状態で耐雷ホーン劣化診断を行うことができる。   ADVANTAGE OF THE INVENTION According to this invention, a lightning-resistant horn degradation diagnosis can be performed in the state which mounted | wore the lightning-proof horn with the lightning protection insulator apparatus.

以下、本発明を例えば耐雷ホーン劣化診断用操作具及び耐雷ホーン劣化診断装置に具体化した一実施形態を図１〜図３に従って説明する。
（避雷碍子装置）
図１に示すように、送配電線３には雷撃により該送配電線３に侵入した雷サージ電流を速やかに大地へ放電する避雷碍子装置１が設けられている。即ち、電柱（図示略）には支持碍子２が固定されており、該支持碍子２の上部には送配電線３が支持されている。また、支持碍子２の底面にはブラケット４の一端が固定されており、該ブラケット４の他端は耐雷ホーン５の下部電極部６に固定されている。耐雷ホーン５の上部には上部電極部７が形成されている。該上部電極部７にはホーン８（金具）の一端がねじにより固定されており、該ホーン８の他端は前記支持碍子２の外周面を囲むように設けられている。雷撃により送配電線３に雷サージ電流が侵入した場合、その電流は送配電線３からホーン８を介して耐雷ホーン５を流れて大地に放電される。また、耐雷ホーン５はその後に発生する続流（放電が継続する現象）を抑制遮断する。 DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which the present invention is embodied in, for example, a lightning-resistant horn deterioration diagnosis operation tool and a lightning-resistant horn deterioration diagnosis device will be described with reference to FIGS.
(Lightning protection device)
As shown in FIG. 1, a lightning arrester device 1 that quickly discharges a lightning surge current that has entered the transmission and distribution line 3 due to a lightning strike to the ground is provided in the transmission and distribution line 3. That is, a support insulator 2 is fixed to a utility pole (not shown), and a transmission / distribution line 3 is supported on the support insulator 2. One end of the bracket 4 is fixed to the bottom surface of the support insulator 2, and the other end of the bracket 4 is fixed to the lower electrode portion 6 of the lightning proof horn 5. An upper electrode portion 7 is formed on the lightning proof horn 5. One end of a horn 8 (metal fitting) is fixed to the upper electrode portion 7 with a screw, and the other end of the horn 8 is provided so as to surround the outer peripheral surface of the support insulator 2. When a lightning surge current enters the transmission / distribution line 3 due to a lightning strike, the current flows from the transmission / distribution line 3 via the horn 8 through the lightning-resistant horn 5 and is discharged to the ground. Further, the lightning proof horn 5 suppresses and interrupts a subsequent flow (a phenomenon in which discharge continues) generated thereafter.

（耐雷ホーン劣化診断用操作具）
図１に示すように、耐雷ホーン５は耐雷ホーン劣化診断装置１０により劣化診断が行われる。該耐雷ホーン劣化診断装置１０は、耐雷ホーン劣化診断用操作具１１及び計測器３１を備えている。該耐雷ホーン劣化診断用操作具１１は、円筒形状の操作棒１２、該操作棒１２の上部に突設された課電側測定端子支持部としての支持部１３、及び該操作棒１２に挿通された可動部１４を備えている。支持部１３及び可動部１４は絶縁体により形成されている。 (Operation tool for lightning horn deterioration diagnosis)
As shown in FIG. 1, the lightning proof horn 5 is subjected to deterioration diagnosis by a lightning proof horn deterioration diagnosis device 10. The lightning-resistant horn deterioration diagnosis device 10 includes a lightning-resistant horn deterioration diagnosis operation tool 11 and a measuring instrument 31. The lightning horn degradation diagnosis operation tool 11 is inserted into the cylindrical operation rod 12, a support portion 13 as a power-applying measurement terminal support portion protruding from the operation rod 12, and the operation rod 12. The movable part 14 is provided. The support part 13 and the movable part 14 are formed of an insulator.

支持部１３は操作棒１２の上面に突設された支持棒１５ａと、該支持棒１５ａに対して直交するよう（断面逆Ｌ字状）に設けられた課電側測定端子固定部１５ｂとから形成されている。課電側測定端子固定部１５ｂには板状の課電側測定端子１６が固定されている。該課電側測定端子１６は課電側測定端子固定部１５ｂ及び支持棒１５ａにより覆われており、該課電側測定端子１６において前記耐雷ホーン５の上部電極部７と接触する部位である上部接触部１７のみ外部に露出されている。課電側測定端子１６の上部接触部１７は操作棒１２の上面に対して平行となっている。   The support portion 13 includes a support rod 15a projecting from the upper surface of the operation rod 12, and a charging-side measurement terminal fixing portion 15b provided so as to be orthogonal to the support rod 15a (inverted L-shaped cross section). Is formed. A plate-shaped charging side measurement terminal 16 is fixed to the charging side measurement terminal fixing portion 15b. The power application side measurement terminal 16 is covered with a power application side measurement terminal fixing portion 15b and a support rod 15a, and an upper portion which is a portion in contact with the upper electrode portion 7 of the lightning proof horn 5 at the power application side measurement terminal 16. Only the contact portion 17 is exposed to the outside. The upper contact portion 17 of the charging side measurement terminal 16 is parallel to the upper surface of the operation rod 12.

図１及び図２に示すように、前記支持棒１５ａには一方が略Ｕ字状に開口したガイド部１８が固定されている。該ガイド部１８は、前記耐雷ホーン５の外周面に支持案内可能となるように、その開口幅が設定されている。該ガイド部１８の開口側の両端縁はそれぞれ耐雷ホーン５を挿入し易いように若干外方へ開くように形成されている。   As shown in FIGS. 1 and 2, a guide portion 18 having one end opened in a substantially U shape is fixed to the support rod 15a. The opening width of the guide portion 18 is set so that it can be supported and guided on the outer peripheral surface of the lightning proof horn 5. Both end edges on the opening side of the guide portion 18 are formed so as to open slightly outward so that the lightning proof horn 5 can be easily inserted.

課電側測定端子１６における上部接触部１７の端部には、リード線１９ａが装着されている。該リード線１９ａは、支持棒１５ａ内を通って操作棒１２の上壁を貫通すると共に該操作棒１２の下部へと配線され、当該操作棒１２の下部側壁を貫通して外部に導出されている。   A lead wire 19 a is attached to the end of the upper contact portion 17 in the charging-side measurement terminal 16. The lead wire 19a passes through the support rod 15a, penetrates the upper wall of the operation rod 12, and is wired to the lower portion of the operation rod 12. The lead wire 19a penetrates the lower side wall of the operation rod 12 and is led out to the outside. Yes.

可動部１４は、操作棒１２の上壁を貫通して該操作棒１２に挿通支持された電極支持棒２３ａと、該電極支持棒２３ａの外端（上端）において該電極支持棒２３ａに対して直交するよう（断面逆Ｌ字状）に設けられた接地側端子固定部２３ｂとから形成されている。接地側端子固定部２３ｂには板状の接地側端子２４が固定されている。該接地側端子２４において前記耐雷ホーン５の下部電極部６と接触する部位である下部接触部２５のみ外部に露出されている。該下部接触部２５の上面は操作棒１２の上面に対して平行となっている。また、該下部接触部２５は前記課電側測定端子１６の上部接触部１７に対向すると共に、互いに平行となっている。該接地側端子２４の端部には、リード線１９ｂが装着されている。該リード線１９ｂは、前記電極支持棒２３ａ内を通って、操作棒１２の下部へと配線され、当該操作棒１２の下部側壁を貫通して外部に導出されている。   The movable portion 14 penetrates the upper wall of the operating rod 12 and is supported by being inserted into the operating rod 12, and the outer end (upper end) of the electrode supporting rod 23a is opposed to the electrode supporting rod 23a. It is formed from a ground side terminal fixing portion 23b provided so as to be orthogonal (inverted L-shaped cross section). A plate-like ground side terminal 24 is fixed to the ground side terminal fixing portion 23b. Only the lower contact portion 25 that is a portion in contact with the lower electrode portion 6 of the lightning proof horn 5 at the ground terminal 24 is exposed to the outside. The upper surface of the lower contact portion 25 is parallel to the upper surface of the operation rod 12. Further, the lower contact portion 25 faces the upper contact portion 17 of the power application side measurement terminal 16 and is parallel to each other. A lead wire 19 b is attached to the end of the ground side terminal 24. The lead wire 19b passes through the electrode support rod 23a and is wired to the lower portion of the operation rod 12. The lead wire 19b penetrates the lower side wall of the operation rod 12 and is led out to the outside.

操作棒１２内において、電極支持棒２３ａには鍔状のストッパ２６が設けられている。当該ストッパ２６と、前記操作棒１２の内面に設けられたばね受け部２２との間には、電極支持棒２３ａに挿通された付勢手段としてのばね２７が配置されている。ばね２７の弾性力により、電極支持棒２３ａ、即ち接地側端子２４はそれぞれ課電側測定端子１６方向（近接方向Ｙ）へ常時付勢されている。付勢手段としてのばね２７は、コイルばねである。   Within the operation rod 12, a hook-like stopper 26 is provided on the electrode support rod 23a. Between the stopper 26 and the spring receiving portion 22 provided on the inner surface of the operation rod 12, a spring 27 as an urging means inserted through the electrode support rod 23a is disposed. Due to the elastic force of the spring 27, the electrode support rod 23a, that is, the ground side terminal 24, is always urged toward the power application side measurement terminal 16 (proximity direction Y). The spring 27 as the urging means is a coil spring.

操作棒１２の下部側壁には、スライド溝２０が支持棒１５ａと平行に（即ち、操作棒１２の長手方向に伸びるように）形成されている。該スライド溝２０の下端部には、当該スライド溝２０に対して直交するように形成された係止手段としての係止溝２１が形成されている。   A slide groove 20 is formed in the lower side wall of the operation rod 12 in parallel with the support rod 15a (that is, extending in the longitudinal direction of the operation rod 12). At the lower end of the slide groove 20, a locking groove 21 is formed as locking means formed so as to be orthogonal to the slide groove 20.

前記電極支持棒２３ａの下端部には、係止操作ハンドル２８が一体に形成されている。該係止操作ハンドル２８は操作棒１２のスライド溝２０を介して外部に露出しており、該スライド溝２０の間（近接方向Ｙ、離間方向Ｘの方向）を移動可能となっている。この係止操作ハンドル２８がスライド溝２０の下端に係合する位置（図３に示す「離間位置」）に到達したとき、前記課電側測定端子１６と接地側端子２４との間隔は最大となり、耐雷ホーン５の上部電極部７と下部電極部６とを結んだ全長よりも大きく離間する。   A locking operation handle 28 is integrally formed at the lower end of the electrode support bar 23a. The locking operation handle 28 is exposed to the outside through the slide groove 20 of the operation rod 12 and can move between the slide grooves 20 (the direction of the approaching direction Y and the separating direction X). When the locking operation handle 28 reaches a position where it engages with the lower end of the slide groove 20 ("separation position" shown in FIG. 3), the interval between the power-applying side measurement terminal 16 and the ground side terminal 24 is maximized. The lightning horn 5 is spaced farther than the entire length connecting the upper electrode portion 7 and the lower electrode portion 6.

また、該係止操作ハンドル２８は、スライド溝２０の下端に係合する位置（図３に示す「離間位置」）において前記操作棒１２の周方向に移動させることにより前記係止溝２１内に移動可能となっている。係止操作ハンドル２８が係止溝２１に係止されることにより、ばね２７の弾性力による該係止操作ハンドル２８の上方への移動が規制される。即ち、電極支持棒２３ａ及び接地側端子固定部２３ｂの上方への移動が規制される。図３に示すように、係止操作ハンドル２８が係止溝２１にて係止された状態にあるとき、接地側端子２４は離間位置に保持される。   Further, the locking operation handle 28 is moved into the locking groove 21 by being moved in the circumferential direction of the operating rod 12 at a position where it engages with the lower end of the slide groove 20 ("separation position" shown in FIG. 3). It is movable. When the locking operation handle 28 is locked in the locking groove 21, the upward movement of the locking operation handle 28 by the elastic force of the spring 27 is restricted. That is, the upward movement of the electrode support rod 23a and the ground side terminal fixing portion 23b is restricted. As shown in FIG. 3, when the locking operation handle 28 is locked in the locking groove 21, the ground terminal 24 is held at the separated position.

また、図１に示すように、課電側測定端子１６及び接地側端子２４からそれぞれ配線されたリード線１９ａ，１９ｂは、操作棒１２の外部にて、計測器３１にそれぞれ接続されている。この計測器３１はバリスタ電圧及び絶縁抵抗等の耐雷ホーン５の電気的性能の診断が可能となっている。計測器３１は、試験スイッチ３２、入力部３３、マイクロコンピュータ（以下「マイコン３４」という）、表示部３５及びスピーカ３６を備えている。試験スイッチ３２、入力部３３、表示部３５及びスピーカ３６はそれぞれマイコン３４に入出力インターフェイス（図示略）を介して接続されている。試験スイッチ３２は、試験の開始及び終了するスイッチ操作を行うと共に耐雷ホーン５の劣化診断項目（試験項目）の選択操作を行う。入力部３３は数値を入力するためのキーボードである。マイコン３４はメモリ３４ａを備えており、このメモリ３４ａにはバリスタ電圧の適正範囲値及び規格絶縁抵抗値等の劣化診断のための各種データが予め格納されている。マイコン３４は試験スイッチ３２の操作により選択された試験の結果（バリスタ電圧の管理値と計測値との比較結果、絶縁抵抗の計測値）及び試験の合否を表示部３５に表示させると共に、スピーカ３６を介して音により報知する。   Further, as shown in FIG. 1, the lead wires 19 a and 19 b respectively wired from the charging side measurement terminal 16 and the ground side terminal 24 are connected to the measuring instrument 31 outside the operation rod 12. This measuring instrument 31 can diagnose the electrical performance of the lightning proof horn 5 such as varistor voltage and insulation resistance. The measuring instrument 31 includes a test switch 32, an input unit 33, a microcomputer (hereinafter referred to as “microcomputer 34”), a display unit 35, and a speaker 36. The test switch 32, the input unit 33, the display unit 35, and the speaker 36 are each connected to the microcomputer 34 via an input / output interface (not shown). The test switch 32 performs a switch operation to start and end the test and performs a selection operation of a deterioration diagnosis item (test item) of the lightning proof horn 5. The input unit 33 is a keyboard for inputting numerical values. The microcomputer 34 includes a memory 34a, and various data for deterioration diagnosis such as an appropriate range value of the varistor voltage and a standard insulation resistance value are stored in advance in the memory 34a. The microcomputer 34 displays the result of the test selected by operating the test switch 32 (the comparison result between the control value of the varistor voltage and the measured value, the measured value of the insulation resistance) and the pass / fail of the test on the display unit 35 and the speaker 36. Through sound.

（実施形態の作用）
次に、上記実施形態のように構成された耐雷ホーン劣化診断用操作具１１を使用した耐雷ホーン５の劣化診断方法について説明する。耐雷ホーン劣化診断用操作具１１の非使用時には係止操作ハンドル２８は係止溝２１に係止された状態（即ち、図３に示す「離間位置」）に保たれている。 (Operation of the embodiment)
Next, a method for diagnosing deterioration of the lightning proof horn 5 using the lightning horn deterioration diagnosis operating tool 11 configured as in the above embodiment will be described. When the lightning horn deterioration diagnosis operation tool 11 is not used, the locking operation handle 28 is held in the locked state in the locking groove 21 (that is, the “separated position” shown in FIG. 3).

図３に示すように、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着する場合、作業者は例えば高所作業車等により耐雷ホーン５の近傍まで寄って行く。この状態で、作業者は操作棒１２を把持して耐雷ホーン劣化診断用操作具１１を、診断対象の耐雷ホーン５に近づける。そのとき、ガイド部１８の開口側から耐雷ホーン５を側方から該ガイド部１８内に挿入する。そして、耐雷ホーン劣化診断用操作具１１を下方に移動させることにより耐雷ホーン５の上部電極部７を課電側測定端子１６に接触させる。この際、図２に示すように、ガイド部１８は、耐雷ホーン５の外周面に案内されることにより、側方への移動が阻止される。このため、耐雷ホーン劣化診断用操作具１１を下方への移動、ひいては課電側測定端子１６と耐雷ホーン５の上部電極部７とを接触させる作業が円滑に行われる。   As shown in FIG. 3, when the lightning horn deterioration diagnosis operation tool 11 is attached to the lightning proof horn 5, the worker approaches the vicinity of the lightning proof horn 5 by an aerial work vehicle or the like. In this state, the operator holds the operating rod 12 and brings the lightning proof horn deterioration diagnosis operation tool 11 closer to the lightning proof horn 5 to be diagnosed. At that time, the lightning proof horn 5 is inserted into the guide portion 18 from the side from the opening side of the guide portion 18. And the upper electrode part 7 of the lightning-resistant horn 5 is made to contact the power-applying side measurement terminal 16 by moving the operation tool 11 for lightning-resistant horn deterioration diagnosis downward. At this time, as shown in FIG. 2, the guide portion 18 is guided to the outer peripheral surface of the lightning proof horn 5, thereby being prevented from moving laterally. For this reason, the operation of moving the lightning resistant horn deterioration diagnosis operation tool 11 downward, and in turn bringing the power-applying measurement terminal 16 into contact with the upper electrode portion 7 of the lightning resistant horn 5 is performed smoothly.

次に、上記のように課電側測定端子１６を上部電極部７に接触させた状態において、係止操作ハンドル２８に指を掛け、該係止操作ハンドル２８を操作棒１２の周方向に移動させる。係止操作ハンドル２８が係止溝２１からスライド溝２０の下端まで移動したときに指を放すと、係止操作ハンドル２８及び電極支持棒２３ａは、それぞればね２７の弾性力により課電側測定端子１６に近接する方向（近接方向Ｙ）へ一体的に移動する。係止操作ハンドル２８及び電極支持棒２３ａの上方への移動は接地側端子２４が耐雷ホーン５の下部電極部６に当接することにより規制される。したがって、係止操作ハンドル２８に指を引っ掛けて、該係止操作ハンドル２８を課電側測定端子１６に近接する方向へ移動操作する必要はない。   Next, in the state where the charging side measurement terminal 16 is in contact with the upper electrode portion 7 as described above, a finger is put on the locking operation handle 28 and the locking operation handle 28 is moved in the circumferential direction of the operating rod 12. Let If the finger is released when the latching operation handle 28 moves from the latching groove 21 to the lower end of the slide groove 20, the latching operation handle 28 and the electrode support bar 23 a are respectively subjected to the voltage measurement side measurement terminal by the elastic force of the spring 27. 16 integrally move in a direction close to 16 (proximity direction Y). The upward movement of the locking operation handle 28 and the electrode support bar 23 a is restricted by the ground side terminal 24 coming into contact with the lower electrode portion 6 of the lightning proof horn 5. Therefore, it is not necessary to hook the finger on the locking operation handle 28 and move the locking operation handle 28 in the direction close to the power-applying measurement terminal 16.

ばね２７の弾性力により、耐雷ホーン５の上部電極部７と耐雷ホーン劣化診断用操作具１１の課電側測定端子１６、及び耐雷ホーン５の下部電極部６と耐雷ホーン劣化診断用操作具１１の接地側端子２４とは、それぞれ互いに接触状態に保たれる（図１に示す「近接位置」）。また、ばね２７の弾性力により、耐雷ホーン５の上部電極部７と耐雷ホーン劣化診断用操作具１１の課電側測定端子１６との接触圧、及び耐雷ホーン５の下部電極部６と耐雷ホーン劣化診断用操作具１１の接地側端子２４との接触圧がそれぞれ確保される。   Due to the elastic force of the spring 27, the upper electrode portion 7 of the lightning-resistant horn 5 and the power-applying measurement terminal 16 of the lightning-resistant horn deterioration diagnosis operation tool 11 and the lower electrode portion 6 of the lightning-proof horn 5 and the lightning-proof horn deterioration diagnosis operation device 11 are used. Are in contact with each other ("proximity position" shown in FIG. 1). Further, due to the elastic force of the spring 27, the contact pressure between the upper electrode portion 7 of the lightning proof horn 5 and the power application side measurement terminal 16 of the lightning horn deterioration diagnosis operation tool 11, and the lower electrode portion 6 of the lightning proof horn 5 and the lightning proof horn. The contact pressure with the ground-side terminal 24 of the degradation diagnostic operation tool 11 is ensured.

その状態において、耐雷ホーン劣化診断用操作具１１から導出されたリード線１９ａ，１９ｂを接続した計測器３１を操作することにより耐雷ホーン５の劣化診断、即ち、耐雷ホーン５のバリスタ電圧及び絶縁抵抗等の電気的性能試験を行う。   In this state, by operating the measuring device 31 connected to the lead wires 19a and 19b derived from the lightning horn deterioration diagnosis operation tool 11, the lightning horn 5 is diagnosed for deterioration, that is, the varistor voltage and the insulation resistance of the lightning proof horn 5. Conduct electrical performance tests.

具体的に説明すると、バリスタ電圧の測定については、該計測器３１の試験スイッチ３２の操作により、診断対象の耐雷ホーン５の上部電極部７と下部電極部６との間にリード線１９ａ，１９ｂ、課電側測定端子１６及び接地側端子２４を介して試験電圧を加圧（印加）する。このとき、試験電圧値（計測値）がメモリ３４ａに予め格納された管理値範囲内であれば、マイコン３４はこの耐雷ホーン５は正常であると判断する。この計測値が該管理値範囲内であれば、表示部３５にその旨の表示（計測値及び試験の合否表示）がなされる。また、スピーカ３６からその旨の音が出力される。   More specifically, the varistor voltage is measured by operating the test switch 32 of the measuring instrument 31 between the upper electrode portion 7 and the lower electrode portion 6 of the lightning proof horn 5 to be diagnosed. The test voltage is pressurized (applied) via the voltage application side measurement terminal 16 and the ground side terminal 24. At this time, if the test voltage value (measured value) is within the management value range stored in advance in the memory 34a, the microcomputer 34 determines that the lightning proof horn 5 is normal. If the measured value is within the management value range, a display to that effect (measured value and test pass / fail display) is made. In addition, a sound to that effect is output from the speaker 36.

また、前記絶縁抵抗測定についても、前述のバリスタ電圧試験と同様に、前記計測器３１の試験スイッチ３２を操作することにより行われる。即ち、該試験スイッチ３２を操作することにより、試験電圧が診断対象の耐雷ホーン５に印加（加圧）される。マイコン３４は試験電圧を印加（加圧）したときの絶縁抵抗値が予めメモリ３４ａに格納された所定値（例えば１０００ＭΩ）以上であるか否かを判断する。該絶縁抵抗値が１０００ＭΩ以上であれば、マイコン３４はその耐雷ホーン５は正常であると判断する。そして、その旨の表示（計測値及び試験の合否表示）が表示部３５に表示される。また、スピーカ３６からその旨の音が出力される。   The insulation resistance measurement is also performed by operating the test switch 32 of the measuring instrument 31 as in the varistor voltage test described above. That is, by operating the test switch 32, a test voltage is applied (pressurized) to the lightning proof horn 5 to be diagnosed. The microcomputer 34 determines whether or not the insulation resistance value when the test voltage is applied (pressurized) is equal to or greater than a predetermined value (for example, 1000 MΩ) stored in the memory 34 a in advance. If the insulation resistance value is 1000 MΩ or more, the microcomputer 34 determines that the lightning proof horn 5 is normal. Then, a display to that effect (measured value and test pass / fail display) is displayed on the display unit 35. In addition, a sound to that effect is output from the speaker 36.

耐雷ホーン５の劣化診断作業の終了後、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５から取り外す。この場合、まず前記係止操作ハンドル２８を下方（離間方向Ｘ）へ操作することにより課電側測定端子１６と接地側端子２４との間隔を耐雷ホーン５の全長よりも大きく離間させる。そして、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５から取り外す。尚、そのとき、係止操作ハンドル２８を係止溝２１に係止させて、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５から取り外すこともできる。   After completion of the deterioration diagnosis work of the lightning proof horn 5, the lightning horn deterioration diagnosis operation tool 11 is removed from the lightning proof horn 5. In this case, first, by operating the locking operation handle 28 downward (separation direction X), the interval between the charging-side measurement terminal 16 and the ground-side terminal 24 is made larger than the total length of the lightning proof horn 5. Then, the lightning horn deterioration diagnosis operation tool 11 is removed from the lightning proof horn 5. At that time, the locking operation handle 28 can be locked in the locking groove 21 and the lightning proof deterioration diagnosing operation tool 11 can be detached from the lightning proof horn 5.

従って本実施形態によれば、以下のような効果を得ることができる。
（１）接地側端子２４は、課電側測定端子１６に対して離間方向Ｘまたは近接方向Ｙへ移動可能となっている。このため、課電側測定端子１６及び接地側端子２４により耐雷ホーン５の上部電極部７及び下部電極部６を挟み込むことができる。したがって、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に容易に装着することができる。耐雷ホーン５の劣化診断は、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着して、課電側測定端子１６及び接地側端子２４から導出されたリード線１９ａ，１９ｂを計測器３１に接続することにより診断可能となる。このため、耐雷ホーン５を避雷碍子装置１から取り外す必要はなく、避雷碍子装置１に装着した状態で耐雷ホーン５の劣化診断を行うことができる。 Therefore, according to the present embodiment, the following effects can be obtained.
(1) The ground-side terminal 24 is movable in the separation direction X or the proximity direction Y with respect to the charging-side measurement terminal 16. For this reason, the upper electrode portion 7 and the lower electrode portion 6 of the lightning proof horn 5 can be sandwiched between the power application side measurement terminal 16 and the ground side terminal 24. Therefore, the lightning resistant horn deterioration diagnosis operation tool 11 can be easily attached to the lightning resistant horn 5. The deterioration diagnosis of the lightning proof horn 5 is performed by attaching the lightning proof horn deterioration diagnosis operation tool 11 to the lightning proof horn 5 and using the lead wires 19a and 19b derived from the power-applying measurement terminal 16 and the grounding terminal 24 as the measuring instrument 31. Diagnosis is possible by connecting. For this reason, it is not necessary to remove the lightning-resistant horn 5 from the lightning-protecting insulator device 1, and the deterioration diagnosis of the lightning-resistant horn 5 can be performed with the lightning-protecting horn device 1 mounted.

（２）ばね２７によって接地側端子２４は常に課電側測定端子１６側（近接方向Ｙ）に付勢されている。このため、課電側測定端子１６及び接地側端子２４によって耐雷ホーン５の上部電極部７及び下部電極部６を容易かつ確実に挟みこむことが可能となる。また、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着した状態において、上部電極部７と課電側測定端子１６との接触圧、及び下部電極部６と接地側端子２４との接触圧がそれぞれ確保され、耐雷ホーン５の劣化診断精度が向上する。   (2) The ground-side terminal 24 is always urged by the spring 27 toward the power-applying measurement terminal 16 (proximity direction Y). For this reason, the upper electrode portion 7 and the lower electrode portion 6 of the lightning proof horn 5 can be easily and reliably sandwiched between the power application side measurement terminal 16 and the ground side terminal 24. Further, in the state where the lightning proof horn deterioration diagnosis operation tool 11 is mounted on the lightning proof horn 5, the contact pressure between the upper electrode portion 7 and the power application side measurement terminal 16 and the contact pressure between the lower electrode portion 6 and the ground side terminal 24. And the deterioration diagnosis accuracy of the lightning proof horn 5 is improved.

（３）操作棒１２の下部には、操作棒１２の長手方向に延びるスライド溝２０及び該スライド溝２０の下端において該スライド溝２０に直交する係止溝２１が形成されている。このため、接地側端子２４を当該接地側端子２４に設けられた係止操作ハンドル２８をスライド溝２０を介して係止溝２１に係止することができる。したがって、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着する際、課電側測定端子１６と接地側端子２４とが耐雷ホーン５の全長よりも大きく離間するように、前記接地側端子２４を係止溝２１によって係止させる。そして、課電側測定端子１６を上部電極部７に当接させた状態で係止溝２１から係止を外す。すると、接地側端子２４はばね２７の弾性力により近接方向Ｙへ移動して、接地側端子２４は下部電極部６に当接する（図１に示す「近接位置」）。したがって、課電側測定端子１６及び接地側端子２４の耐雷ホーン５への取付け作業、ひいては耐雷ホーン５の劣化診断作業をスムーズに行うことができる。   (3) A slide groove 20 extending in the longitudinal direction of the operation rod 12 and a locking groove 21 orthogonal to the slide groove 20 are formed at the lower end of the slide groove 20 at the lower portion of the operation rod 12. Therefore, the locking operation handle 28 provided on the grounding side terminal 24 can be locked to the locking groove 21 via the slide groove 20. Therefore, when the lightning proof horn deterioration diagnosis operation tool 11 is attached to the lightning proof horn 5, the grounding side terminal 24 is arranged such that the power application side measurement terminal 16 and the ground side terminal 24 are separated from each other by a larger distance than the total length of the lightning proof horn 5. Is locked by the locking groove 21. Then, the locking is released from the locking groove 21 in a state where the charging-side measuring terminal 16 is in contact with the upper electrode portion 7. Then, the ground side terminal 24 moves in the proximity direction Y by the elastic force of the spring 27, and the ground side terminal 24 contacts the lower electrode portion 6 ("proximity position" shown in FIG. 1). Accordingly, it is possible to smoothly perform the work of attaching the charging side measurement terminal 16 and the grounding side terminal 24 to the lightning proof horn 5 and consequently the deterioration diagnosis work of the lightning proof horn 5.

（４）また、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５から取り外す場合、係止操作ハンドル２８を操作することにより課電側測定端子１６と接地側端子２４との間隔を耐雷ホーン５の全長よりも大きく離間させることができる。このとき、図３に示すように、接地側端子２４の離間位置にて、係止操作ハンドル２８を係止溝２１に係止させることができる。したがって、係止操作ハンドル２８を接地側端子２４の離間位置に指で保持しながら該係止操作ハンドル２８を取り外すようにした場合に比べて、耐雷ホーン劣化診断用操作具１１を容易に耐雷ホーン５から取り外すことができる。   (4) Further, when the lightning horn deterioration diagnosis operation tool 11 is removed from the lightning proof horn 5, the interval between the power-applying measurement terminal 16 and the ground side terminal 24 is set by operating the locking operation handle 28. It can be separated larger than the full length. At this time, as shown in FIG. 3, the locking operation handle 28 can be locked in the locking groove 21 at the separated position of the ground terminal 24. Therefore, compared with the case where the locking operation handle 28 is removed while the locking operation handle 28 is held at the separated position of the ground terminal 24 with the finger, the lightning resistant horn deterioration diagnosis operating tool 11 can be easily operated. 5 can be removed.

（５）支持棒１５ａには一方が略Ｕ字状に開口したガイド部１８が、当該支持棒１５ａにおいて、操作棒１２と課電側測定端子１６との間に配置されている。耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着する際、ガイド部１８により耐雷ホーン５の外周面に支持案内されることにより、耐雷ホーン劣化診断用操作具１１の耐雷ホーン５に対する装着作業が簡単になる。このため、耐雷ホーン５の劣化診断作業の準備をスムーズに行うことができる。また、前記ガイド部１８により耐雷ホーン５の外周面に支持案内されるため、耐雷ホーン劣化診断用操作具１１が安定する。このため、作業効率がいっそう向上する。   (5) A guide portion 18, one of which is opened in a substantially U shape on the support rod 15 a, is disposed between the operation rod 12 and the charging side measurement terminal 16 in the support rod 15 a. When mounting the lightning proof horn deterioration diagnosis operation tool 11 on the lightning proof horn 5, the guide unit 18 supports and guides the lightning proof horn deterioration diagnosis operation tool 11 on the lightning proof horn 5 by being supported and guided by the outer peripheral surface of the lightning proof horn 5 Becomes easier. For this reason, preparation for the deterioration diagnosis work of the lightning proof horn 5 can be performed smoothly. In addition, since the guide portion 18 is supported and guided on the outer peripheral surface of the lightning proof horn 5, the lightning horn deterioration diagnosis operation tool 11 is stabilized. For this reason, work efficiency improves further.

（６）支持棒１５ａは、絶縁体にて形成されている。また、課電側測定端子１６は該支持棒１５ａにおいて、上部接触部１７のみ露出するように覆われている。このため、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着する際、課電側測定端子１６の上部電極部７以外のものとの絶縁が確保される。課電側測定端子１６において絶縁体で覆われている部位が例えば送配電線３に触れても耐雷ホーン劣化診断用操作具１１に電流が流れることがない。また、耐雷ホーン劣化診断用操作具１１を耐雷ホーン５に装着する際、送配電線３や配電機器等への接触を過度に気にする必要がないので、耐雷ホーン劣化診断用操作具１１の耐雷ホーン５への装着作業効率も向上する。   (6) The support bar 15a is formed of an insulator. In addition, the charging-side measurement terminal 16 is covered with the support bar 15a so that only the upper contact portion 17 is exposed. For this reason, when mounting the lightning proof deterioration diagnosing operation tool 11 on the lightning proof horn 5, insulation from other than the upper electrode part 7 of the charging side measurement terminal 16 is ensured. Even if the part covered with the insulator in the charging side measurement terminal 16 touches the transmission / distribution line 3, for example, current does not flow to the lightning horn deterioration diagnosis operation tool 11. In addition, when attaching the lightning proof horn deterioration diagnosis operation tool 11 to the lightning proof horn 5, it is not necessary to worry too much about contact with the power transmission / distribution line 3 or power distribution equipment. Installation work efficiency to the lightning proof horn 5 is also improved.

尚、前記実施形態は、次のように変更して実施してもよい。
・本実施形態では、係止手段として係止操作ハンドル２８を用いたが、ローレットねじのようなつまみを用いてもよい。このような構成にした場合、電極支持棒２３ａに雌ネジを設け、該雌ねじに前記ローレットねじをスライド溝２０を介して外部から螺入する。また、外部に露出される該ローレットねじの頭部は、スライド溝の幅よりも大径となるものを用いる。こうすることにより、当該ローレットねじを締め付け方向に回転させると、前記ローレットねじの頭部の内側面は操作棒１２の外周面を押し付ける。よって、スライド溝２０の範囲内において、電極支持棒２３ａを任意の位置に係止（固定保持）させることができる。また、このような構成にした場合、係止溝２１は不要となり、操作棒１２の設計及び製造が容易となる。 In addition, you may implement the said embodiment as follows.
In the present embodiment, the locking operation handle 28 is used as the locking means, but a knob such as a knurled screw may be used. In such a configuration, the electrode support rod 23a is provided with a female screw, and the knurled screw is screwed into the female screw from the outside through the slide groove 20. Further, the head of the knurled screw exposed to the outside uses a screw having a diameter larger than the width of the slide groove. In this way, when the knurled screw is rotated in the tightening direction, the inner surface of the head of the knurled screw presses the outer circumferential surface of the operation rod 12. Therefore, the electrode support rod 23a can be locked (fixed and held) at an arbitrary position within the range of the slide groove 20. Further, in such a configuration, the locking groove 21 is not necessary, and the design and manufacture of the operation rod 12 is facilitated.

（付記）
・前記付勢手段はコイルばねである請求項２に記載の耐雷ホーン劣化診断用操作具。このようにすれば、耐雷ホーン劣化診断用操作具の構成の簡素化が図られる。 (Appendix)
The lightning horn deterioration diagnosis operation tool according to claim 2, wherein the biasing means is a coil spring. In this way, the structure of the lightning horn deterioration diagnosis operation tool can be simplified.

本実施形態の耐雷ホーン劣化診断装置を示す部分断面図。The fragmentary sectional view which shows the lightning proof horn degradation diagnostic apparatus of this embodiment. 図１におけるＡ−Ａ線断面図。FIG. 2 is a sectional view taken along line AA in FIG. 1. 本実施形態の耐雷ホーン劣化診断用操作具を脱着するときの耐雷ホーン劣化診断装置を示す部分断面図。The fragmentary sectional view which shows the lightning proof horn degradation diagnostic apparatus when removing the operating tool for lightning proof horn degradation diagnosis of this embodiment.

符号の説明Explanation of symbols

１…避雷碍子装置、３…送配電線、５…耐雷ホーン、６…下部電極部、７…上部電極部、１１…耐雷ホーン劣化診断用操作具、１２…操作棒、１３…支持部、１５ａ…課電側測定端子支持部及び絶縁体としての支持棒、１５ｂ…絶縁体としての課電側測定端子固定部、１６…課電側測定端子、１７…上部接触部、１８…ガイド部、１９ａ，１９ｂ…リード線、２０…スライド溝、２１…係止手段としての係止溝、２３ａ…絶縁体としての電極支持棒、２３ｂ…絶縁体としての接地側測定端子固定部、２４…接地側測定端子、２５…下部接触部、２７…付勢手段としてのばね、２８…係止手段としての係止操作ハンドル、３１…計測器。   DESCRIPTION OF SYMBOLS 1 ... Lightning protection insulator device, 3 ... Transmission / distribution electric wire, 5 ... Lightning-proof horn, 6 ... Lower electrode part, 7 ... Upper electrode part, 11 ... Operation tool for lightning-proof horn deterioration diagnosis, 12 ... Operation rod, 13 ... Support part, 15a ... Electric charging side measurement terminal support and support rod as insulator, 15b ... Electrical application side measurement terminal fixing part as insulator, 16 ... Electrical application side measurement terminal, 17 ... Upper contact part, 18 ... Guide part, 19a , 19b ... lead wire, 20 ... slide groove, 21 ... locking groove as locking means, 23a ... electrode support rod as insulator, 23b ... ground side measurement terminal fixing part as insulator, 24 ... ground side measurement Terminals, 25... Lower contact portion, 27... Spring as urging means, 28... Locking operation handle as locking means, 31.

Claims (7)

雷撃により送配電線路に侵入した雷サージ電流を大地へ放電する避雷碍子装置に備えられた耐雷ホーンの劣化を診断するために装着する耐雷ホーン劣化診断用操作具であって、
操作棒と、
該操作棒の先端に前記耐雷ホーンの上部電極部に装着可能に設けられた課電側測定端子と、
同じく前記操作棒の先端に前記耐雷ホーンの下部電極部に装着可能に且つ、課電側測定端子に対して近接又は離間する方向へ移動可能に設けられた接地側測定端子と、
前記課電側測定端子及び接地側測定端子のそれぞれから導出されて耐雷ホーンの電気的性能を測定する計測器に接続されるリード線と
を備えた耐雷ホーン劣化診断用操作具。 A lightning proof horn deterioration diagnosis operation tool to be mounted to diagnose lightning proof horn deterioration provided in a lightning arrester that discharges a lightning surge current that has entered a power distribution line due to lightning strikes to the ground,
An operation bar;
A charging-side measuring terminal provided at the tip of the operation rod so as to be attachable to the upper electrode portion of the lightning proof horn;
Similarly, a ground-side measurement terminal that can be attached to the lower electrode portion of the lightning proof horn at the tip of the operation rod and can be moved in the direction of approaching or separating from the charging-side measurement terminal,
An operation tool for diagnosing lightning-resistant horn deterioration, comprising a lead wire that is derived from each of the power-applying-side measurement terminal and the ground-side measuring terminal and connected to a measuring instrument that measures the electrical performance of the lightning-resistant horn. 前記接地側測定端子を常に課電側測定端子側へ付勢する付勢手段を備えた請求項１に記載の耐雷ホーン劣化診断用操作具。 The operation tool for lightning-proof horn deterioration diagnosis according to claim 1, further comprising an urging unit that constantly urges the ground-side measurement terminal toward the power-applying measurement terminal. 前記操作棒には、当該接地側測定端子の移動可能範囲における離間する方向の端部に、前記接地側測定端子を係止する係止手段が設けられている請求項２に記載の耐雷ホーン劣化診断用操作具。 The lightning-resistant horn deterioration according to claim 2, wherein the operating rod is provided with a locking means for locking the ground-side measurement terminal at an end portion in a separating direction in the movable range of the ground-side measurement terminal. Diagnostic tool. 前記係止手段は、前記操作棒において、前記近接又は離間する方向と直交するように設けられた係止溝と、
該係止溝内を移動すると共に前記接地側測定端子と一体に移動する電極支持棒に取り付けられた操作ハンドルと
を備えた請求項３に記載の耐雷ホーン劣化診断用操作具。 The locking means includes a locking groove provided in the operating rod so as to be orthogonal to the approaching or separating direction;
The lightning horn degradation diagnosis operation tool according to claim 3, further comprising an operation handle attached to an electrode support rod that moves in the locking groove and moves integrally with the ground side measurement terminal. 前記操作棒の先端には課電側測定端子を支持する課電側測定端子支持部を突設し、該課電側測定端子支持部には耐雷ホーンの外周面に支持案内するガイド部を設けた請求項１〜請求項４のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具。 A projection-side measurement terminal support part that supports the measurement-side measurement terminal is projected at the tip of the operation rod, and a guide part that supports and guides the outer surface of the lightning proof horn is provided on the measurement-side measurement terminal support part. The lightning horn deterioration diagnostic operation tool according to any one of claims 1 to 4. 前記課電側測定端子において、前記耐雷ホーンの上部電極部と接触する接触部が露出するように該課電側測定端子の外周面を絶縁体により覆うようにした請求項１〜請求項５のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具。 6. The electric power transmission side measurement terminal according to claim 1, wherein an outer peripheral surface of the electric power application side measurement terminal is covered with an insulator so that a contact portion in contact with the upper electrode portion of the lightning proof horn is exposed. The operation tool for lightning-resistant horn deterioration diagnosis as described in any one of them. 請求項１〜請求項６のうちいずれか一項に記載の耐雷ホーン劣化診断用操作具と、
該耐雷ホーン劣化診断用操作具に接続される計測器と
を備えた耐雷ホーン劣化診断装置。 The lightning horn degradation diagnostic operation tool according to any one of claims 1 to 6,
A lightning-resistant horn deterioration diagnosis device comprising a measuring instrument connected to the lightning-resistant horn deterioration diagnosis operation tool.
JP2004270297A 2004-09-16 2004-09-16 Operation tool for diagnosing current limiting arcing horn degradation, and current limiting arcing horn degradation diagnostic device Pending JP2006084352A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101762721B1 (en) * 2015-12-30 2017-08-01 한국 전기안전공사 Apparatus for analysising safety diagonstic of lightning protection system and method thereof
CN109765440A (en) * 2018-12-27 2019-05-17 国网浙江诸暨市供电有限公司 The sub- lightning current monitoring device of Intelligent insulation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101762721B1 (en) * 2015-12-30 2017-08-01 한국 전기안전공사 Apparatus for analysising safety diagonstic of lightning protection system and method thereof
CN109765440A (en) * 2018-12-27 2019-05-17 国网浙江诸暨市供电有限公司 The sub- lightning current monitoring device of Intelligent insulation

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