JP2001221817A - Dc voltage detector - Google Patents
Dc voltage detectorInfo
- Publication number
- JP2001221817A JP2001221817A JP2000026571A JP2000026571A JP2001221817A JP 2001221817 A JP2001221817 A JP 2001221817A JP 2000026571 A JP2000026571 A JP 2000026571A JP 2000026571 A JP2000026571 A JP 2000026571A JP 2001221817 A JP2001221817 A JP 2001221817A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- test
- detection
- insulating
- insulating cylinder
- 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.)
- Withdrawn
Links
Landscapes
- Measuring Leads Or Probes (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Electric Cable Installation (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電鉄沿線の架線電
圧の有無を管理するために使用される携帯式の直流用検
電器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable DC voltage detector used for managing the presence or absence of an overhead line voltage along a railway.
【０００２】[0002]
【従来の技術】電鉄沿線の架線には、例えば１５００Ｖ
程度の直流電圧が変電所から送電されているが、保守管
理上、任意時に或いは定期的に任意地点で架線電圧の有
無を検出する必要があり、この架線電圧の有無を検出す
る検電作業は、架線を停電状態にした上で、通常、架線
が高所にあるところから手動で長さ調整できるようにし
た以下のような直流用検電器が使用されている。2. Description of the Related Art For example, 1500 V
Although the DC voltage of the degree is transmitted from the substation, it is necessary to detect the presence or absence of the overhead line voltage at any time or at an arbitrary point for maintenance management, and the power detection work to detect the presence or absence of the overhead line voltage is In general, the following DC detectors are used in which the overhead line is in a power outage state and the length of the overhead line can be manually adjusted from a high place.
【０００３】この直流用検電器は、径の異なる複数本の
円筒状強化プラスチック製絶縁筒を軸方向に伸縮可能に
連結した延竿式のもの、または、径の異なる複数本の円
筒状強化プラスチック製絶縁筒を軸方向に継ぎ足すこと
で任意の長さにするようにした継竿式のものが知られて
いる。この検電器には、検出された架線電圧が有るか否
かを表示するランプ等の電圧有無表示手段を有する検出
部が絶縁筒の外周一部に設けられている。The direct current detector is of a rod type in which a plurality of cylindrical reinforced plastic insulating cylinders having different diameters are connected so as to be able to expand and contract in the axial direction, or a plurality of cylindrical reinforced plastics having different diameters. 2. Description of the Related Art There is known a connecting rod type in which an insulating cylinder made of a pipe is added in the axial direction to have an arbitrary length. In this electric detector, a detection unit having a voltage presence / absence display means such as a lamp for displaying whether or not a detected overhead line voltage is provided is provided on a part of the outer periphery of the insulating cylinder.
【０００４】延竿式と継竿式の検電器は、最小径の最先
端絶縁筒の先端部にフック状の検電金具を固定して、こ
の検電金具を高所の架線に引掛け係止させることで架線
電圧の有無を検出するようにしている。例えば、複数本
の絶縁筒を使って全長を所望の長さにすると、最後端の
絶縁筒を両手で持って最先端の絶縁筒を高所の架線の高
さまで上げて、検電金具を架線に引掛ける。架線に引掛
けられた検電金具を地上のレール等に検出抵抗を介して
アースして検出抵抗の端子電圧を測定することで、架線
電圧が等価的に検出される。[0004] In the case of the rod type and the spliced type voltage detectors, a hook-shaped voltage detector is fixed to the tip of an insulating cylinder having the smallest diameter, and the voltage detector is hooked on an overhead wire at a high place. By stopping, the presence or absence of the overhead wire voltage is detected. For example, if the total length is set to the desired length using multiple insulating cylinders, hold the rearmost insulating cylinder with both hands and raise the cutting-edge insulating cylinder to the height of the overhead wire, and then wire the metal fittings. Hook on. The voltage of the overhead wire is equivalently detected by measuring the terminal voltage of the detection resistor by grounding the detection metal fitting hooked on the overhead wire to a ground rail or the like via a detection resistor.
【０００５】[0005]
【発明が解決しようとする課題】以上のような直流用検
電器は、架線電圧検出の現場に持ち運ばれて使用される
が、現場で検電器自体に故障等が発生していると正確な
架線電圧検出ができないことがあるので、架線電圧検出
の作業の前に検電器自体が正常に動作するかどうかの試
験が実施されている。この試験は、架線電圧検出の現場
から離れた事務所に設置された据置式試験装置（直流電
圧発生器）を使って行われるか、或いは、検電器と共に
現場に持ち込まれた携帯式試験装置を使って現場で行わ
れる。このような試験装置は、現場の架線電圧に対応さ
せた試験電圧を発生して検電器の検電金具に印加させる
もので、試験装置で検電金具に試験電圧を印加したとき
の検出部の電圧検出状態を確認することで、検電器自体
が正常に動作するかどうかの試験が行われる。The DC voltage detector as described above is carried and used at the site of the overhead line voltage detection. However, if a failure or the like occurs in the voltage detector itself at the site, it is accurate. Since the overhead line voltage may not be detected, a test is performed before the work of detecting the overhead line voltage to determine whether the voltage detector itself operates normally. This test is performed using a stationary test device (DC voltage generator) installed in an office remote from the site of the overhead line voltage detection, or a portable test device brought to the site together with a voltage detector. It is performed on site using. Such a test device generates a test voltage corresponding to the overhead line voltage at the site and applies the test voltage to a metal fitting of a voltage detector. By checking the voltage detection state, a test is performed to determine whether the voltage detector itself operates normally.
【０００６】しかし、直流用検電器を事務所に設置され
た据置式試験装置の在る場所に持っていって試験する作
業が面倒であり、また、事務所で試験して合格となった
検電器を現場に持ち込んで架線電圧の検出作業をするま
での間に検電器に故障が発生することもあり、このよう
な場合は検電器を現場から事務所に持ち帰って再度試験
することになり、時間を要する面倒な作業が必要とな
る。However, it is troublesome to bring the DC voltage detector to the place where the stationary test apparatus installed in the office is located, and to perform the test. In some cases, the detector may fail before the detector is brought to the site and the overhead line voltage is detected.In such a case, the detector must be returned to the office from the site and tested again. Time-consuming and troublesome work is required.
【０００７】また、携帯式試験装置を使用して検電器を
試験する場合は、現場で任意時に試験することが容易と
なるが、現場に検電器と携帯式試験装置の２つの独立し
た装置類を持ち運ぶ作業が面倒である。さらに、携帯式
試験装置は作業服のポケットに入る程度の小型軽量なも
のであるために、作業員が現場に持って行くのを忘れて
現場で検電器の試験ができなくなる不具合も生じる。[0007] When testing a voltage detector using a portable test device, it is easy to perform the test at any time on site, but two independent devices, a voltage detector and a portable test device, are provided on site. Carrying the work is troublesome. Furthermore, since the portable test device is small and light enough to fit in the pocket of work clothes, there is also a problem that a worker cannot carry out a test of an electrometer at the site because he forgets to bring it to the site.
【０００８】本発明の目的とするところは、架線電圧検
出の現場等の任意の場所で任意時に試験ができる便利
な、かつ、持ち運び等の保守管理が容易な直流用検電器
を提供することにある。An object of the present invention is to provide a DC voltage detector which is convenient and can be tested at any time at an arbitrary place such as an overhead line voltage detection site, and which is easy to carry and maintain. is there.
【０００９】[0009]
【課題を解決するための手段】本発明は上記目的を達成
するため、所定の長さを有する絶縁筒の先端に固設され
て、外部の架線に引掛け係止されることで架線と電気的
に接触する検電金具と、前記絶縁筒の一部に固設され、
前記検電金具の電圧検出信号に基づいて架線電圧を検出
してその検電情報を表示する表示手段を有する検出部を
有する直流用検電器において、前記検出部に、架線電圧
に対応させた試験電圧を任意時の手動操作で発生する試
験電圧発生回路を内蔵させたことを特徴とする。According to the present invention, in order to achieve the above-mentioned object, the overhead wire is fixed to an end of an insulating cylinder having a predetermined length and is hooked and locked to an external overhead wire. Electrical contact metal fittings that are in contact with each other, fixed to a part of the insulating cylinder,
In a DC power detector having a detection unit having a display unit for detecting overhead wire voltage based on a voltage detection signal of the electrical detection bracket and displaying the power detection information, a test in which the detection unit corresponds to the overhead wire voltage A test voltage generating circuit for generating a voltage by manual operation at any time is incorporated.
【００１０】ここで、検電器は、手動で長さ調整可能な
複数本の絶縁筒、例えば径の異なる複数本の絶縁筒を伸
縮可能に連結した延竿式のもの、或いは、径の異なる複
数本の絶縁筒を伸縮可能に連結する継竿式のもの等であ
り、その最小径の絶縁筒に検電金具が固設され、最小径
か最大径の絶縁筒に検出部が固設されて、検電金具と検
出部が複数本の絶縁筒の内部或いは外部に配線された導
電部材で電気的接続される。検出部は検電金具からの電
圧検出信号に基づいて架線電圧を検出する既存の電圧検
出回路と、単独に手動で試験電圧を発生する試験電圧発
生回路を内蔵する。Here, the voltage detector may be a plurality of insulating cylinders whose length can be manually adjusted, for example, a rod type in which a plurality of insulating cylinders having different diameters are connected so as to extend or contract, or a plurality of insulating cylinders having different diameters. It is a connecting rod type, etc. that connects the insulating cylinders extendably and contractively, and the detection metal fitting is fixed to the minimum diameter insulating cylinder, and the detection unit is fixed to the minimum or maximum diameter insulating cylinder. In addition, the metal detection fitting and the detection unit are electrically connected to each other by a conductive member wired inside or outside the plurality of insulating cylinders. The detection unit includes a built-in voltage detection circuit that detects an overhead wire voltage based on a voltage detection signal from a voltage detector and a test voltage generation circuit that independently generates a test voltage manually.
【００１１】この試験電圧発生回路は、電池（市販の乾
電池）や圧電素子を電源に有して、外部からの手動によ
るスイッチ操作で架線電圧と同程度かそれ以下の定直流
電圧の試験電圧を発生して、試験の必要時に検電金具に
印加する。検電金具に試験電圧が印加されると、その印
加電圧が検出部の電圧検出回路で検出されて、検電器の
試験が行われる。This test voltage generation circuit has a battery (commercially available dry cell) or a piezoelectric element as a power supply, and generates a test voltage of a constant DC voltage equal to or less than the overhead line voltage by a manual switch operation from outside. It is generated and applied to the metallurgical fitting when the test is necessary. When a test voltage is applied to the metallurgical fitting, the applied voltage is detected by the voltage detection circuit of the detection unit, and the test of the electrometer is performed.
【００１２】また、本発明は、上記検出部の表示手段
は、検電金具を架線に引掛け使用して検出される架線電
圧の電圧値と、試験電圧発生回路からの試験電圧の電圧
値のいずれも表示する電圧値表示部を有することを特徴
とする。Further, in the present invention, the display means of the detection unit may be configured such that the voltage value of the overhead wire voltage detected by hooking the power detection bracket on the overhead wire and the voltage value of the test voltage from the test voltage generating circuit are used. Each of them has a voltage value display section for displaying.
【００１３】ここでの検出部の表示手段は、架線電圧の
有無を表示するランプやブザーと架線電圧値を数値表示
する液晶パネル等であり、電圧値表示部に架線電圧検出
時は架線電圧値を表示させ、試験時は試験電圧値を表示
させるようにすることで、架線電圧変動のより細かい管
理と架線電圧検出作業前の試験のより正確な管理が容易
となる。The display means of the detecting section is a lamp or a buzzer for displaying the presence or absence of an overhead line voltage and a liquid crystal panel for numerically displaying the overhead line voltage value. The voltage value display section displays the overhead line voltage value when the overhead line voltage is detected. Is displayed, and the test voltage value is displayed at the time of the test, thereby facilitating finer control of the overhead wire voltage fluctuation and more accurate management of the test before the overhead wire voltage detection work.
【００１４】[0014]
【発明の実施の形態】本発明の実施形態を図１乃至図８
を参照して以下に詳述する。1 to 8 show an embodiment of the present invention.
The details will be described below with reference to FIG.
【００１５】図１（Ａ）（Ｂ）に示される直流用検電器
の絶縁筒群１０は、架線電圧検出前の保管時の状態が示
される。この絶縁筒群１０は、図４に示すように径の異
なる複数本の強化プラスチック製絶縁筒１１ａ、１１
ｂ、…を手動で軸方向に伸縮可能に連結した延竿式のも
ので、最小径の最先端絶縁筒１１ａの先端部にフック状
の検電金具２０が固設され、最大径の最後端絶縁筒１１
ｎの先端部外周に検出部３０が固設され、各絶縁筒１１
ａ、…内に検電金具２０と検出部３０を電気的に接続す
る軸方向伸縮可能な導電部材、例えば延竿式の導電筒群
５０が配置される。この導電筒群５０は、径の異なる複
数本の導電筒５１ａ、５１ｂ、…を伸縮可能に連結した
延竿式のもので、各導電筒５１ａ、…はステンレスパイ
プ、カーボンパイプ等の円筒状の良導電性パイプから成
り、各々が電気的かつ機械的に連結されて１本の導電管
となって、検電金具２０と検出部３０を常時電気的に接
続する。The insulating cylinder group 10 of the DC detector shown in FIGS. 1A and 1B shows a state at the time of storage before detecting overhead wire voltage. As shown in FIG. 4, the insulating cylinder group 10 includes a plurality of reinforced plastic insulating cylinders 11a and 11 having different diameters.
b,... are manually extended so as to be able to expand and contract in the axial direction, and a hook-shaped electrometric metal fitting 20 is fixed to the tip end of the shortest-diameter insulating cylinder 11a having the smallest diameter, and the rearmost end of the largest diameter. Insulating tube 11
The detection unit 30 is fixedly mounted on the outer periphery of the distal end of the
a,..., an axially expandable and contractible conductive member, for example, a rod-type conductive cylinder group 50, which electrically connects the detection metal fitting 20 and the detection unit 30 is arranged. The conductive cylinder group 50 is of a rod type in which a plurality of conductive cylinders 51a, 51b,... Having different diameters are connected so as to be expandable and contractible. Each of the conductive cylinders 51a,. It consists of good conductive pipes, each of which is electrically and mechanically connected to form one conductive tube, and always electrically connects the electrometric metal fitting 20 and the detecting unit 30.
【００１６】絶縁筒群１０の先端の検電金具２０は、図
４の鎖線に示すような架線１に引掛けられて架線電圧を
検出するもので、その形状はフック状に限らない。この
検電金具２０が固設される最先端絶縁筒１１ａの先端部
は、例えば図５に示す構造である。最先端絶縁筒１１ａ
の先端部内外にジョイント金具２１と先端カバー２２が
固設され、ジョイント金具２１に検電金具２０の基端部
が螺着される。最先端絶縁筒１１ａの先端部内には、限
流抵抗Ｒ１とリード線２４とアンテナ取付金具２５が直
列接続されて固定され、限流抵抗Ｒ１とアンテナ取付金
具２５は絶縁モールド材２６に封入される。アンテナ取
付金具２５に導電筒群５０の一方の先端が電気的かつ機
械的に連結される。The metal fitting 20 at the tip of the insulating cylinder group 10 is hooked on the overhead wire 1 as shown by a chain line in FIG. 4 to detect the overhead wire voltage, and its shape is not limited to a hook shape. The distal end of the most insulated cylinder 11a to which the metallurgical fitting 20 is fixed has, for example, the structure shown in FIG. State-of-the-art insulating tube 11a
A joint fitting 21 and a tip cover 22 are fixedly provided inside and outside the distal end of the electro-optical device. A current-limiting resistor R1, a lead wire 24, and an antenna mounting bracket 25 are connected in series and fixed in the distal end portion of the front-end insulating tube 11a, and the current-limiting resistor R1 and the antenna mounting bracket 25 are sealed in an insulating molding material 26. . One end of the conductive cylinder group 50 is electrically and mechanically connected to the antenna mounting bracket 25.
【００１７】また、絶縁筒群１０の最大径の最後端絶縁
筒１１ｎは、作業員が手に持って架線電圧検出作業をす
る握り棒で、その先端部外周に図５に示すような継手カ
バー１２と検出部３０が固定され、後端部の内外に導電
筒連結用固定キャップ１３と絶縁筒保護用石突ゴム１４
が固定される。また、各絶縁筒１１ａ、…の内面の所定
の複数箇所に、導電筒群５０の伸縮動作をスムーズにす
るための筒ガイド６０が必要個数だけ固定される。The rearmost insulating cylinder 11n having the largest diameter of the insulating cylinder group 10 is a gripping rod which is used by an operator to detect overhead wire voltage, and has a joint cover as shown in FIG. 12 and the detection unit 30 are fixed, and a fixed cap 13 for connecting the conductive cylinder and a rubber foot 14 for protecting the insulating cylinder are provided inside and outside the rear end.
Is fixed. Also, a required number of cylinder guides 60 for smoothing the expansion and contraction of the conductive cylinder group 50 are fixed to a plurality of predetermined locations on the inner surface of each of the insulating cylinders 11a,.
【００１８】導電筒群５０はラジオのロッドアンテナと
同様な構造のものでよく、これを構成する径の異なる複
数本（通常において４〜５本）の導電筒５１ａ、…は段
階的に径が相違して、その最大径の導電筒５１ａと最小
径の導電筒５１ｎの各先端が絶縁筒群１０内の前後両端
に位置するアンテナ取付金具２５と固定キャップ１３に
連結される。この導電筒群５０は、絶縁筒群１０の絶縁
筒１１ａ、…の手動による伸縮動作に追従して従動伸縮
する。この従動伸縮動作を常に円滑ならしめるため、例
えば図５に示すように導電筒群５０の最大径の導電筒５
１ａを最先端に位置させてアンテナ取付金具２５に連結
し、最小径の導電筒５１ｎを最後端に位置させて固定キ
ャップ１３に連結することが望ましい。なお、導電筒群
５０の方向性を図３と１８０度逆にして絶縁筒群１０内
に収納することも可能である。The conductive cylinder group 50 may have the same structure as that of a radio rod antenna. A plurality of (usually 4 to 5) conductive cylinders 51a having different diameters constituting the group are formed in a stepwise manner. In contrast, the tips of the largest diameter conductive cylinder 51a and the smallest diameter conductive cylinder 51n are connected to the antenna mounting bracket 25 and the fixed cap 13 located at the front and rear ends in the insulating cylinder group 10. The conductive cylinder group 50 expands and contracts following the manual expansion and contraction operation of the insulating cylinders 11a of the insulating cylinder group 10. In order to always smooth this driven expansion / contraction operation, for example, as shown in FIG.
It is desirable that 1a be positioned at the forefront and connected to the antenna mounting bracket 25, and the conductive cylinder 51n having the smallest diameter be positioned at the rearmost end and be connected to the fixed cap 13. Note that the direction of the conductive cylinder group 50 can be reversed by 180 degrees from that in FIG.
【００１９】また、絶縁筒群１０の最後端に在る固定キ
ャップ１３に固定される最後端導電筒５１ｎの後端から
引出リード線５２が導出され、その先端と最後端絶縁筒
１１ｎの先端部外周に固定された検出部３０が専用の導
体７０で電気的に接続される。導体７０は、丸棒状の電
線類でもよいが、例えば図６に示すような１枚の帯板状
の導電薄板７０が使用される。導電薄板７０はリン青銅
板等の導電板で、最後端絶縁筒１１ｎの管壁に埋設され
て絶縁される。例えば最後端絶縁筒１１ｎの外周に強化
プラスチックの絶縁チューブ１１ｎ’を嵌着して管壁を
２重構造にし、その２重筒間に導電薄板７０を圧接した
状態で配設している。導電薄板７０の先端部が継手カバ
ー１２内に導出し、この導出先端部から延在させた引出
リード線７１が検出部３０に配線される。Further, a lead wire 52 is drawn out from the rear end of the rearmost conductive cylinder 51n fixed to the fixing cap 13 at the rearmost end of the insulating cylinder group 10, and its leading end and the distal end of the rearmost insulating cylinder 11n. The detection unit 30 fixed to the outer periphery is electrically connected by a dedicated conductor 70. The conductor 70 may be a round rod-shaped electric wire, but for example, a single strip-shaped conductive thin plate 70 as shown in FIG. 6 is used. The conductive thin plate 70 is a conductive plate such as a phosphor bronze plate, and is buried and insulated in the tube wall of the rearmost insulating cylinder 11n. For example, a reinforced plastic insulating tube 11n 'is fitted around the outer periphery of the rearmost insulating cylinder 11n to form a double-walled tube wall, and the conductive thin plate 70 is disposed between the double cylinders in a pressure-contact state. The leading end of the conductive thin plate 70 extends into the joint cover 12, and a lead wire 71 extending from the leading end is wired to the detector 30.
【００２０】検出部３０は、最後端絶縁筒１１ｎの先端
部に固定された筐体３１を有する。ここで、本発明は図
２に示すように、検出部３０の筐体３１に架線電圧検出
に必要な電圧検出回路と検電情報の表示手段３３と共
に、任意時に手動で試験電圧を発生する試験電圧発生回
路４０を内蔵させたことを特徴とする。また、このよう
な検出部３０を備えた検電器の試験作業を簡便ならしめ
るために、検出部３０と別体の試験リード線４２を検電
装置に添設する。The detecting section 30 has a housing 31 fixed to the front end of the rearmost insulating cylinder 11n. Here, as shown in FIG. 2, the present invention includes a test for manually generating a test voltage at any time together with a voltage detection circuit and an electric power detection information display means 33 necessary for detecting the overhead line voltage on a housing 31 of the detection unit 30. It is characterized in that a voltage generation circuit 40 is incorporated. In addition, in order to simplify the test operation of the voltage detector including the detection unit 30, a test lead wire 42 separate from the detection unit 30 is attached to the voltage detection device.
【００２１】すなわち、筐体３１には、この筐体３１を
架線電圧検出作業時にアースする接地線３２が接続され
る。また、筐体３１に内蔵される電圧検出回路３３は、
絶縁筒群１０の限流抵抗Ｒ１に直列接続された検出抵抗
Ｒ２の端子電圧を検出して架線電圧を等価的に検出する
回路で、既存の回路が適用される。筐体３１に内蔵され
る表示手段３４は、電圧検出回路３３で検出された電圧
値が所定レベル以上であるか否かの電圧有無表示部であ
る例えばランプ表示手段３４ｂとブザー表示手段３４ｃ
を有し、さらに、電圧検出回路３３で検出された架線電
圧等の電圧値を数値表示する液晶パネル等の電圧値表示
部３４ａを有する。電圧値表示部３４ａは、付随した電
圧表示スイッチ３５を手動でオンすると電圧検出回路３
３で検出された電圧値を数値表示する。また、筐体３１
に内蔵される試験電圧発生回路４０は、電圧検出回路３
３や表示手段３４と独立した電源回路である。That is, the housing 31 is connected to a grounding wire 32 for grounding the housing 31 during overhead wire voltage detection work. The voltage detection circuit 33 built in the housing 31 is
An existing circuit is applied as a circuit for detecting the terminal voltage of the detection resistor R2 connected in series to the current limiting resistor R1 of the insulating cylinder group 10 and equivalently detecting the overhead wire voltage. The display means 34 incorporated in the housing 31 is a voltage presence / absence display section for determining whether or not the voltage value detected by the voltage detection circuit 33 is equal to or higher than a predetermined level. For example, a lamp display means 34b and a buzzer display means 34c
And a voltage value display section 34a such as a liquid crystal panel for numerically displaying the voltage value such as the overhead line voltage detected by the voltage detection circuit 33. When the associated voltage display switch 35 is manually turned on, the voltage value display section 34a
The voltage value detected in step 3 is numerically displayed. Also, the housing 31
The test voltage generation circuit 40 built in the
3 and a power supply circuit independent of the display means 34.
【００２２】ここで、試験電圧発生回路４０の説明の前
に、図２の検出部３０から試験電圧発生回路４０を省略
した従来構造に相当する検出部構造を図７に示し、その
構造例と動作を説明する。筐体２１から、この筐体２１
に電気的に接続されて外部に導出された接地線３２は、
電圧検出回路３３を架線電圧検出作業の際にアースする
もので、検出抵抗Ｒ２に直列接続される。接地線３２の
筐体３１外に導出された先端部に、例えば図８（Ａ）
（Ｂ）に示すようなマグネット内蔵の接地端子３６を有
する。接地端子３６は先端開口箱形の金属部品で、先端
開口にマグネット３７が埋め込まれる。図８（Ａ）に示
すように接地端子３６を外部のアース部材、例えば電鉄
沿線のレール３８上に置くと、マグネット３７がレール
３８に磁気吸着してその吸着力で接地端子３６がレール
３８に積極的に圧接されて、接地線３２による検出部３
０のアース作業がワンタッチで確実に行われる。このよ
うに接地線３２で筐体３１をアースした状態で架線電圧
検出が次の要領で行われる。Here, before describing the test voltage generation circuit 40, FIG. 7 shows a detection unit structure corresponding to a conventional structure in which the test voltage generation circuit 40 is omitted from the detection unit 30 in FIG. The operation will be described. From the housing 21, this housing 21
The ground line 32 electrically connected to the outside and led to the outside is
The voltage detection circuit 33 is grounded during the overhead line voltage detection operation, and is connected in series to the detection resistor R2. For example, FIG.
A ground terminal 36 with a built-in magnet as shown in FIG. The ground terminal 36 is a box-shaped metal part with an open end, and a magnet 37 is embedded in the open end. As shown in FIG. 8A, when the ground terminal 36 is placed on an external ground member, for example, a rail 38 along the railway, the magnet 37 magnetically attracts the rail 38 and the ground terminal 36 is attached to the rail 38 by the attractive force. The detection unit 3 is positively pressed and connected to the ground line 32.
Zero grounding work can be performed with one touch. In the state where the housing 31 is grounded by the ground wire 32, the overhead line voltage is detected in the following manner.
【００２３】図１の絶縁筒群１０は最小長さの納竿状態
にあって、保管や運搬が小スペースで便利にできるよう
にしてあり、この状態の検電器で低所の架線電圧を検出
することが可能であるが、ここでは高所の架線電圧を検
出する場合で説明する。図１の絶縁筒群１０で高所の架
線電圧検出の作業を行う場合、図４（Ａ）に示すように
各絶縁筒１１ａ、…を順に引き出して全体の長さを例え
ば最大長さにして、その長さを固定化する。この長さの
固定化は、各絶縁筒の端部に螺装されたジョイント部材
１５を手動で回転操作することで行えばよい。各絶縁筒
１１ａ、…を手動で最大長さまで引き延ばす動作に追従
して、図４（Ｂ）に示すように導電筒群５０が絶縁筒１
１ａ、…の引き延ばし力でもって引き延ばされる。図４
の状態で絶縁筒群１０に固定された検出部３０からの接
地線３２をレール３８にアース接続した後、最後端絶縁
筒１１ｎを手に持って最先端絶縁筒１１ａの検電金具２
０を高所の架線１に引掛けると、図７の回路図に示すよ
うに架線１とレール３８の間に閉回路が形成されて、検
出部３０で架線電圧が検出され、表示手段３４が架線電
圧の有無表示を行い、電圧表示スイッチ３５の手動操作
で検出電圧値が表示される。このとき、最後端絶縁筒１
１ｎを手にする作業員の手元に検出部３０が在るので、
作業員は検出部３０の電圧値等の表示を容易に確認する
ことができて、架線電圧変動のより細かい管理が可能と
なる。架線電圧検出の作業が終了すると、接地線３２を
レール３８から外し、検電金具２０を架線１から外し
て、絶縁筒群１０を元の最小長さになるまで手動で縮小
し、この縮小動作に追従させて導電筒群５０も元の最小
長さまで縮小させる。The insulated cylinder group 10 shown in FIG. 1 is in a rod-length state with a minimum length so that storage and transportation can be conveniently performed in a small space. It is possible to detect the overhead line voltage at a high place. When the work of detecting overhead line voltage at a high place is performed by the insulating cylinder group 10 of FIG. 1, each insulating cylinder 11a,... Is pulled out in order as shown in FIG. , Fix its length. This length can be fixed by manually rotating the joint member 15 screwed to the end of each insulating cylinder. Following the operation of manually extending each of the insulating cylinders 11a,... To the maximum length, as shown in FIG.
1a,... Are stretched by the stretching force. FIG.
After the ground wire 32 from the detection unit 30 fixed to the group of insulating cylinders 10 is grounded to the rail 38 in the state shown in FIG.
When 0 is hooked on the overhead wire 1 at a high place, a closed circuit is formed between the overhead wire 1 and the rail 38 as shown in the circuit diagram of FIG. The presence or absence of the overhead wire voltage is displayed, and the detected voltage value is displayed by manually operating the voltage display switch 35. At this time, the rearmost insulating cylinder 1
Since the detecting unit 30 is located near the worker who holds 1n,
The operator can easily check the display of the voltage value and the like of the detection unit 30, and can more finely manage the overhead line voltage fluctuation. When the operation of detecting the overhead wire voltage is completed, the grounding wire 32 is removed from the rail 38, the power detection fitting 20 is removed from the overhead wire 1, and the insulating cylinder group 10 is manually reduced to the original minimum length. The conductive cylinder group 50 is also reduced to the original minimum length.
【００２４】なお、絶縁筒群１０の架線電圧検出現場に
おける伸縮動作は、通常において次のように行われる。
縮小状態にある各絶縁筒１１ａ、…を順に引き延ばす場
合は径の小さい絶縁筒から順に行われ、逆に最大長に引
き延ばした各絶縁筒１１ａ、…を縮小する場合は径の大
きい絶縁筒から順に行われる。このような絶縁筒群１０
の伸縮動作に追従して従動的に伸縮する導電筒群５０
は、その前後両端に外力が軸方向に作用して伸縮動作を
し、このとき各導電筒５１ａ、…の伸縮動作は概して径
の大きい導電筒から順に行われる。また、導電筒群５０
の伸縮動作は、各絶縁筒１１ａ、…内で軸方向に移動す
る各導電筒５１ａ、…を複数の筒ガイド６０でガイドし
て半径方向の移動を規制することで安定して行われる。
複数の筒ガイド６０は、最後端絶縁筒１１ｎを除く各絶
縁筒１１ａ、…の後端部内面に設置することが有効であ
る。The expansion and contraction operation of the insulating cylinder group 10 at the site where the overhead wire voltage is detected is usually performed as follows.
When the insulating cylinders 11a,... In the reduced state are sequentially extended, the insulating cylinders having the smaller diameter are sequentially performed. On the contrary, when the insulating cylinders 11a,. Done. Such an insulating cylinder group 10
Conductive cylinder group 50 that expands and contracts following the expansion and contraction operation of
Are extended and contracted by an external force acting on both front and rear ends thereof in the axial direction. At this time, the extending and contracting operations of the conductive tubes 51a,. Also, the conductive cylinder group 50
. Are moved stably by guiding the conductive cylinders 51a,... Moving in the axial direction in the insulating cylinders 11a,.
It is effective to install the plurality of tube guides 60 on the inner surface of the rear end of each of the insulating tubes 11a,... Except for the rearmost insulating tube 11n.
【００２５】また、導電筒群５０の最大径の導電筒５１
ａを最先端側にして、複数の筒ガイド６０の内の最大径
で最先端の導電筒５１ａの軸方向移動をガイドする筒ガ
イド６０ａを最小径で最先端の絶縁筒１１ａの内面に固
定すると、この筒ガイド６０ａと最大径導電筒５１ａの
隙間が十分に小さく設定でき、同様にして他の各筒ガイ
ドと対応する導電筒との隙間も十分に小さく設定でき
る。このような隙間が小さくなるほど、各導電筒の対応
する筒ガイドで規制される半径方向の移動量が小さく設
定できて、導電筒群５０の前後両端からの外力による従
動伸縮動作が安定してスムーズに行われる。なお、絶縁
筒群１０内に導電筒群５０を、図５と逆に最大径の導電
筒５１ａを最後端側となるように設置することも可能で
あるが、このようにすると例えば図５に示す最小径の最
先端絶縁筒１１ａに固定する筒ガイド６０ａが最小径の
導電筒５１ｎをガイドすることになって、複数の各筒ガ
イドと対応する導電筒の隙間が大きくなり、筒ガイド内
で導電筒が半径方向にガタ付いて導電筒群５０の従動伸
縮動作が不安定になる可能性が大きくなる。The conductive cylinder 51 having the largest diameter of the conductive cylinder group 50
When a is set at the leading end, the cylinder guide 60a that guides the axial movement of the leading end conductive tube 51a with the largest diameter among the plurality of tube guides 60 is fixed to the inner surface of the leading end insulating tube 11a with the smallest diameter. The gap between the tube guide 60a and the maximum diameter conductive tube 51a can be set sufficiently small, and similarly, the gap between each of the other tube guides and the corresponding conductive tube can be set sufficiently small. As the gap becomes smaller, the amount of movement in the radial direction regulated by the corresponding tube guide of each conductive tube can be set smaller, and the driven expansion and contraction operation by the external force from the front and rear ends of the conductive tube group 50 becomes stable and smooth. Done in In addition, it is possible to install the conductive cylinder group 50 in the insulating cylinder group 10 so that the conductive cylinder 51a having the largest diameter is located at the rearmost end side, as shown in FIG. The cylinder guide 60a fixed to the leading-edge insulating cylinder 11a having the minimum diameter shown in the drawing guides the conductive cylinder 51n having the minimum diameter, so that the gap between each of the plurality of cylinder guides and the corresponding conductive cylinder becomes large, and the inside of the cylinder guide is increased. There is a high possibility that the conductive cylinders rattle in the radial direction and the driven expansion / contraction operation of the conductive cylinder group 50 becomes unstable.
【００２６】また、絶縁筒群１０を手動で伸縮動作させ
るとき、各絶縁筒１１ａ、…の隣接する同士が外周方向
に相対的に回転することがある。このような回転力は導
電筒群５０の両端にも加わり、各導電筒５１ａ、…の隣
接する同士も相対的に回転するが、各導電筒５１ａ、…
の隣接する同士が相対的に回転しても捻れるようなこと
が無くて電気的かつ機械的な連結構造が変わらない。そ
の結果、導電筒群５０が何回も伸縮動作を繰り返して
も、検電金具２０と検出部３０を電気的に接続する状態
が変わらない。When the insulating cylinder group 10 is manually extended and contracted, the adjacent insulating cylinders 11a,... May relatively rotate in the outer peripheral direction. Such a rotational force is applied to both ends of the conductive cylinder group 50, and adjacent conductive cylinders 51a,.
Even if adjacent members rotate relative to each other, they do not twist, and the electrical and mechanical connection structure does not change. As a result, even if the conductive cylinder group 50 repeats the expansion and contraction operation many times, the state of the electrical connection between the detection metal fitting 20 and the detection unit 30 does not change.
【００２７】また、絶縁筒群１０の握り棒として使用さ
れる最後端絶縁筒１１ｎの先端部に検出部３０を設置す
ることで、作業員は検出部３０に邪魔されることなく握
り棒の絶縁筒１１ｎを手にして電圧検出の作業ができ、
かつ、作業員が検出部３０の電圧値表示を読み取る作業
が容易になる。このように最後端絶縁筒１１ｎの先端部
に設置された検出部３０と絶縁筒１１ｎの後端部内の最
後端導電筒５１ｎを接続するための導電薄板７０には、
直流１５００Ｖ程度の検出に必要な電流容量のものが使
用され、例えば板厚０．３ｍｍ、幅１０ｍｍのリン青銅
板が使用可能である。このような導電薄板７０を使用す
れば、絶縁筒群１０の最大径で握り棒となる最後端絶縁
筒１１ｎを作業員の手に握り易い外径とすることが容易
にできる。Further, by installing the detecting section 30 at the tip of the rearmost insulating cylinder 11n used as a gripping rod of the insulating cylinder group 10, the worker can insulate the gripping rod without being disturbed by the detecting section 30. With the cylinder 11n in hand, voltage detection can be performed.
In addition, the operation of reading the voltage value display of the detection unit 30 by the operator becomes easy. In this manner, the conductive thin plate 70 for connecting the detection unit 30 installed at the front end of the rearmost insulating tube 11n and the rearmost conductive tube 51n in the rear end of the insulating tube 11n includes:
Those having a current capacity necessary for detection of about 1500 V DC are used. For example, a phosphor bronze plate having a thickness of 0.3 mm and a width of 10 mm can be used. If such a conductive thin plate 70 is used, it is easy to make the outermost diameter of the rearmost insulating cylinder 11n, which is a gripping rod with the maximum diameter of the insulating cylinder group 10, an outer diameter that is easy for the operator to grasp.
【００２８】以上のような架線電圧検出動作をする検電
器における検出部３０に追加的に内蔵させる試験電圧発
生回路４０は、架線電圧の定格が例えば直流１５００Ｖ
であるとすると、この定格電圧と同等か低い１０００Ｖ
程度の直流定電圧を発生する単独の電源回路である。こ
の試験電圧発生回路４０は、従来の携帯式試験装置と同
様な圧電素子や電池を電源とする小型軽量な電源回路の
適用可能であり、このような小型軽量な電源回路は検出
部３０の筐体３１を大型化することなく既存サイズの筐
体に内蔵される。The test voltage generating circuit 40 additionally incorporated in the detection unit 30 of the voltage detector that performs the overhead line voltage detecting operation as described above has a overhead line voltage rating of, for example, 1500 V DC.
Is 1000 V which is equal to or lower than this rated voltage.
It is a single power supply circuit that generates a constant DC constant voltage. As the test voltage generation circuit 40, a small and lightweight power supply circuit using a piezoelectric element or a battery as a power source similar to a conventional portable test apparatus can be applied. The body 31 is built in a housing of an existing size without increasing the size.
【００２９】図２に示すように、試験電圧発生回路４０
は圧電素子や電池を内蔵して、試験スイッチ４１を手動
でオンすると所定の試験電圧、例えば１０００Ｖの直流
電圧を出力端子４５に印加する。出力端子４５に試験リ
ード線４２が脱着可能に電気的かつ機械的に接続され
て、試験電圧を検電金具２０に印加する。試験リード線
４２は、例えば図３に示すように両端にバナナプラグ４
３とワニ口クリップ４４を有する１本のフレキシブルな
絶縁電線である。As shown in FIG. 2, the test voltage generation circuit 40
When a test switch 41 is manually turned on with a built-in piezoelectric element or battery, a predetermined test voltage, for example, a DC voltage of 1000 V is applied to the output terminal 45. The test lead wire 42 is detachably electrically and mechanically connected to the output terminal 45, and a test voltage is applied to the metal detection fitting 20. The test lead wire 42 has, for example, banana plugs 4 at both ends as shown in FIG.
3 and one flexible insulated wire having an alligator clip 44.
【００３０】本発明における検電器は、現場に持ち込ん
で架線電圧検出の作業をする前に、或いは、別の任意の
時間帯で、次のように故障個所が無いか否かの試験が行
われる。試験リード線４２のワニ口クリップ４４を検電
金具２０に挟み、バナナプラグ４３を検出部３０の筐体
３１に設置された出力端子４５に差し込んで電気的接続
をする。これと前後して筐体３１から導出された接地線
３２の先端の接地端子３６を筐体３１に磁気吸着させて
アースする。この状態で試験電圧発生回路４０に付設さ
れた試験スイッチ４１を手動でオンすると、検電器が正
常な場合に架線電圧検出時と同様に閉回路が形成され
て、検電金具２０に試験電圧発生回路４０から印加され
た試験電圧が電圧検出回路３３に検出され、電圧表示ス
イッチ３５をオンすると試験電圧値が電圧値表示部３４
ａで表示される。The detector according to the present invention is tested for whether there is no fault as follows, before being brought to the site and performing overhead wire voltage detection, or at another arbitrary time. . The crocodile clip 44 of the test lead wire 42 is sandwiched between the metallurgical fittings 20, and the banana plug 43 is inserted into the output terminal 45 provided on the housing 31 of the detection unit 30 for electrical connection. Before or after this, the ground terminal 36 at the tip of the ground wire 32 led out of the housing 31 is magnetically attracted to the housing 31 and grounded. In this state, when the test switch 41 attached to the test voltage generation circuit 40 is manually turned on, a closed circuit is formed in the case where the voltage detector is normal as in the case of detecting the overhead wire voltage, and the test voltage generation The test voltage applied from the circuit 40 is detected by the voltage detection circuit 33, and when the voltage display switch 35 is turned on, the test voltage value is displayed on the voltage value display section 34.
It is indicated by a.
【００３１】電圧値表示部３４ａで表示された試験電圧
値が正常な１０００Ｖであると、検電器が正常に動作す
ることが確認でき、また、接地線３２が断線無く正常に
アース動作することが確認される。電圧値表示部３４ａ
で表示された試験電圧値が１０００Ｖより大幅に小さい
値であると、検電器が動作不良状態にあることが確認さ
れて、点検や修理等の後処理が行われる。If the test voltage value displayed on the voltage value display section 34a is normal 1000 V, it can be confirmed that the voltage detector operates normally, and that the ground line 32 can operate normally without disconnection. It is confirmed. Voltage value display 34a
If the test voltage value indicated by is significantly smaller than 1000 V, it is confirmed that the voltage detector is in a malfunctioning state, and post-processing such as inspection and repair is performed.
【００３２】以上のような検電器の試験は、検電器がい
ずれの場所にあっても実施可能であり、而も、架線電圧
検出作業の直前や直後の任意の時間帯を利用して短時間
で実施できる。さらに、試験のための試験電圧発生回路
４０が検出部４０に内蔵されているので、従来のような
小型軽量の携帯式試験装置の現場などへの持ち込み忘れ
が皆無となり、この携帯式試験装置の面倒な保守管理の
手間が無くなる。The above-described test of the voltage detector can be carried out regardless of the location of the voltage detector. Can be implemented. Furthermore, since the test voltage generating circuit 40 for the test is built in the detection unit 40, there is no need to forget to bring a small and lightweight portable test device to the site or the like as in the prior art. The troublesome maintenance management is eliminated.
【００３３】なお、以上の実施形態は延竿式の絶縁筒群
１０に検出部３０を固設したものであるが、本発明は継
竿式の絶縁筒群に検出部を固設した直流用検電器であっ
ても有効に適用できる。In the above embodiment, the detection unit 30 is fixed to the rod-type insulating cylinder group 10. However, the present invention is directed to a direct current type in which the detection unit is fixed to the joint rod-type insulating cylinder group. Even a voltage detector can be applied effectively.
【００３４】[0034]
【発明の効果】本発明によれば、検出部に、架線電圧に
対応させた試験電圧を任意時の手動操作で発生する試験
電圧発生回路を内蔵させたので、試験電圧発生回路で発
生させた試験電圧を検電金具に印加することで、検出部
を含む検電器全体の配線系や回路部品の良否等が試験で
きて、架線電圧検出機能と自身の試験機能を備えた多機
能で高性能な直流用検電器が提供できる。また、自身の
試験が検出部に内蔵の試験電圧発生回路を手動で試験電
圧発生動作させることで可能となるので、試験が時間帯
や場所を選ぶこと無く任意時に任意の場所で短時間で実
行することが可能な、実用価値に優れた直流用検電器が
提供できる。According to the present invention, a test voltage generating circuit for generating a test voltage corresponding to an overhead line voltage by a manual operation at an arbitrary time is incorporated in the detection unit, so that the test voltage is generated by the test voltage generating circuit. By applying the test voltage to the voltage detector, it is possible to test the quality of the wiring system and circuit components of the entire voltage detector, including the detector, and to perform multi-functional and high-performance with the overhead line voltage detection function and its own test function. It can provide a simple DC voltage detector. In addition, the test can be performed by manually operating the test voltage generation circuit built in the detection unit by the test voltage generation operation. It is possible to provide a DC detector excellent in practical value and capable of performing the operation.
【００３５】また、検出部の表示手段の電圧値表示部で
検出された架線電圧と試験時の試験電圧のいずれかを表
示させることで、液晶パネル等の架線電圧表示部と試験
電圧表示部が共通化され、検電装置と試験装置の両設備
の部品共通化によるコストダウン化が図れる。Further, by displaying either the overhead line voltage detected by the voltage value display section of the display means of the detection section or the test voltage at the time of the test, the overhead line voltage display section such as a liquid crystal panel and the test voltage display section can be displayed. The cost can be reduced by standardizing the components of the equipment for both the power detection device and the test device.
【図１】（Ａ）は本発明の一実施形態を示す検電器の正
面図、（Ｂ）は側面図FIG. 1A is a front view of an electric detector showing one embodiment of the present invention, and FIG.
【図２】図１の検電器における検出部の回路図FIG. 2 is a circuit diagram of a detection unit in the voltage detector of FIG.
【図３】図２の検出部に使用される試験リード線の正面
図FIG. 3 is a front view of a test lead wire used for the detection unit in FIG. 2;
【図４】（Ａ）は図１の検電器の使用時の側面図、
（Ｂ）は使用時の絶縁筒群内の導電筒群の側面図FIG. 4A is a side view when the voltage detector of FIG. 1 is used,
(B) is a side view of the conductive cylinder group in the insulating cylinder group during use.
【図５】図４（Ａ）における検電器の部分拡大断面図FIG. 5 is a partially enlarged cross-sectional view of the voltage detector in FIG.
【図６】（Ａ）は図５の検電器における絶縁筒群の部分
拡大断面図、（Ｂ）は（Ａ）のＴ−Ｔ線拡大断面図6A is a partially enlarged sectional view of a group of insulating cylinders in the voltage detector of FIG. 5, and FIG. 6B is an enlarged sectional view taken along line TT of FIG.
【図７】図１の検電器における検出部から試験電圧発生
回路を省略した本発明回路構造参考のための回路図FIG. 7 is a circuit diagram for reference of the circuit structure of the present invention in which a test voltage generation circuit is omitted from a detection unit in the voltage detector of FIG. 1;
【図８】（Ａ）は図７の検出部における接地線の部分拡
大断面図、（Ｂ）は（Ａ）の接地線における接地端子の
底面図8A is a partially enlarged cross-sectional view of a ground line in the detection unit in FIG. 7, and FIG. 8B is a bottom view of a ground terminal in the ground line in FIG.
１ 架線 １０ 絶縁筒群 １１ａ〜１１ｎ 絶縁筒 ２０ 検電金具 ３０ 検出部 ３４ 検電情報の表示手段 ３４ａ 電圧値表示部 ４０ 試験電圧発生回路 ４２ 試験リード線 ４５ 試験電圧出力端子 DESCRIPTION OF SYMBOLS 1 Overhead wire 10 Insulation cylinder group 11a-11n Insulation cylinder 20 Inspection metal fitting 30 Detecting part 34 Display means of electric detection information 34a Voltage value display part 40 Test voltage generating circuit 42 Test lead wire 45 Test voltage output terminal
フロントページの続き (72)発明者 上野 哲義 東京都千代田区丸の内１丁目６番５号 東 日本旅客鉄道株式会社内 (72)発明者 山崎 鑑二 兵庫県尼崎市尾浜町３丁目29番３号 長谷 川電機工業株式会社内 (72)発明者 大森 隆雄 兵庫県尼崎市尾浜町３丁目29番３号 長谷 川電機工業株式会社内 Ｆターム(参考） 2G011 AA06 AB06 AC09 AD01 AE04 AF01 2G025 AA00 AA03 AB00 AC01 2G035 AA09 AB01 AB02 AC01 AD00 AD56 Continuation of front page (72) Inventor Tetsuyoshi Ueno 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Railway Company (72) Inventor Kanji Yamazaki 3-29-3 Ohamacho, Amagasaki City, Hyogo Prefecture Hase (72) Inventor Takao Omori 3-29-3, Ohama-cho, Amagasaki-shi, Hyogo Hasegawa Electric Industry Co., Ltd. F-term (reference) 2G011 AA06 AB06 AC09 AD01 AE04 AF01 2G025 AA00 AA03 AB00 AC01 2G035 AA09 AB01 AB02 AC01 AD00 AD56
Claims (4)
されて、外部の架線に引掛け係止されることで架線と電
気的に接触する検電金具と、前記絶縁筒の一部に固設さ
れ、前記検電金具の電圧検出信号に基づいて架線電圧を
検出してその検電情報を表示する表示手段を有する検出
部を有する直流用検電器において、 前記検出部に、架線電圧に対応させた試験電圧を任意時
の手動操作で発生する試験電圧発生回路を内蔵させたこ
とを特徴とする直流用検電器。A metal fitting fixed to the tip of an insulating cylinder having a predetermined length and hooked to an external overhead wire to make electrical contact with the overhead wire; A DC voltage detector fixed to the unit, and having a detection unit having a display unit for detecting overhead wire voltage based on a voltage detection signal of the power detection fitting and displaying the power detection information, A DC voltage detector having a built-in test voltage generation circuit that generates a test voltage corresponding to a voltage by manual operation at any time.
数本からなることを特徴とする請求項１に記載の直流用
検電器。2. The direct current detector according to claim 1, wherein the insulating tube comprises a plurality of tubes whose length can be manually adjusted.
筒を伸縮可能に連結した延竿式の絶縁筒群からなること
を特徴とする請求項２に記載の直流用検電器。3. The DC voltage detector according to claim 2, wherein the insulating cylinder is formed of a rod-shaped insulating cylinder group in which a plurality of insulating cylinders having different diameters are connected so as to extend and contract.
線に引掛け使用して検出される架線電圧の電圧値と、試
験電圧発生回路からの試験電圧の電圧値のいずれも表示
する電圧値表示部を有することを特徴とする請求項１又
は２に記載の直流用検電器。4. The display means of the detecting section displays both a voltage value of an overhead wire voltage detected by hooking a power detection bracket on the overhead wire and a voltage value of a test voltage from a test voltage generating circuit. The DC voltage detector according to claim 1 or 2, further comprising a voltage value display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000026571A JP2001221817A (en) | 2000-02-03 | 2000-02-03 | Dc voltage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000026571A JP2001221817A (en) | 2000-02-03 | 2000-02-03 | Dc voltage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001221817A true JP2001221817A (en) | 2001-08-17 |
Family
ID=18552288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000026571A Withdrawn JP2001221817A (en) | 2000-02-03 | 2000-02-03 | Dc voltage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001221817A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011160555A (en) * | 2010-02-01 | 2011-08-18 | Nippon Sharyo Seizo Kaisha Ltd | Terminal block for engine generator |
| JP2012058196A (en) * | 2010-09-13 | 2012-03-22 | Total Electric Management Service | Dc detector |
| JP5586800B1 (en) * | 2013-11-21 | 2014-09-10 | 株式会社希望電機 | Voltage detector |
| CN104950274A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Test device and test method for starting voltage of direct-current electroscope |
| JP2017156325A (en) * | 2016-03-04 | 2017-09-07 | 中国電力株式会社 | Voltage measurement instrument |
| KR102391742B1 (en) * | 2021-11-22 | 2022-04-27 | 한전케이피에스 주식회사 | Detector Test System |
-
2000
- 2000-02-03 JP JP2000026571A patent/JP2001221817A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011160555A (en) * | 2010-02-01 | 2011-08-18 | Nippon Sharyo Seizo Kaisha Ltd | Terminal block for engine generator |
| JP2012058196A (en) * | 2010-09-13 | 2012-03-22 | Total Electric Management Service | Dc detector |
| JP5586800B1 (en) * | 2013-11-21 | 2014-09-10 | 株式会社希望電機 | Voltage detector |
| CN104950274A (en) * | 2014-03-24 | 2015-09-30 | 国家电网公司 | Test device and test method for starting voltage of direct-current electroscope |
| CN104950274B (en) * | 2014-03-24 | 2017-10-31 | 国家电网公司 | DC electroscope starts voltage test device and test method |
| JP2017156325A (en) * | 2016-03-04 | 2017-09-07 | 中国電力株式会社 | Voltage measurement instrument |
| KR102391742B1 (en) * | 2021-11-22 | 2022-04-27 | 한전케이피에스 주식회사 | Detector Test System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3826981A (en) | Solid-state high impedance meter system | |
| KR950029777A (en) | Insulation state measurement method, insulation state determination device, and distributed power generation system using the same | |
| US5397996A (en) | Continuity tester using a brush tipped probe | |
| KR19990006783A (en) | Insulation capacitance field mapping method and apparatus for stator bars with magnetic field generating elements | |
| JP4443793B2 (en) | DC voltage detector | |
| JP2001221817A (en) | Dc voltage detector | |
| CN107850640A (en) | DC meter and application method | |
| KR101692638B1 (en) | Cable connector for detecting deterioration of cross link self-contraction type | |
| US6998832B1 (en) | High-voltage indicating apparatus and method | |
| JP2001208781A (en) | Dc electroscope | |
| JP4257839B2 (en) | Ground fault detection device for power cable shielding conductor | |
| WO2015184491A1 (en) | Voltage detector | |
| US2396172A (en) | Testing device | |
| WO2014078892A1 (en) | A device and a test assembly for testing the integrity of a low voltage electrical network | |
| US5130638A (en) | Portable receiver for detecting probe signal on low voltage line conductor | |
| JP2006184246A (en) | Receiver for surveying wiring path, and wiring path survey instrument and wiring path survey method using same | |
| JPH023946B2 (en) | ||
| CN219676132U (en) | High-voltage electroscope that can extend | |
| JP2020112363A (en) | Direct current electroscope | |
| CN215813057U (en) | Low-voltage phase tester | |
| CN219475814U (en) | Smart electric meter fault detection device | |
| JPH07294570A (en) | Insulation-resistance tester | |
| CN215641485U (en) | System with transmission line voltage measurement and electricity test functions | |
| JPH10167569A (en) | Device for supporting electric wire drum | |
| CN216847935U (en) | Combined electricity testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20070403 |