JPH0587577U - High-voltage processing component for DC leakage current measurement - Google Patents
High-voltage processing component for DC leakage current measurementInfo
- Publication number
- JPH0587577U JPH0587577U JP2853792U JP2853792U JPH0587577U JP H0587577 U JPH0587577 U JP H0587577U JP 2853792 U JP2853792 U JP 2853792U JP 2853792 U JP2853792 U JP 2853792U JP H0587577 U JPH0587577 U JP H0587577U
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- Prior art keywords
- voltage
- leakage current
- cable
- measured
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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- 238000012545 processing Methods 0.000 title claims abstract description 41
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- 230000006866 deterioration Effects 0.000 description 3
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Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 測定用高圧線の端部と被測定ケーブルの端部
及びそれに接続された端子板の高電圧部分を誰にでも簡
単に密閉でき、高電圧部での気中放電の発生を抑制する
と共に、イオンが外部に流出することを防止する。
【構成】 気体投入口３から直流漏れ電流測定用高電圧
部処理部材Ａの内部へ不活性気体を所定圧力で注入し、
可撓性樹脂である直流漏れ電流測定用高電圧部処理部材
Ａの膨脹によって硬質樹脂の直流漏れ電流測定用高電圧
部処理部材Ｂを圧迫し、この力が貫通孔２の壁面に加わ
り、測定用高電圧線を高圧端子板や被測定ケーブルの端
末に密着する。このようにして、測定用高圧線の端部
と、被測定ケーブルの端部と、測定用高圧線のワニグチ
クリップと被測定ケーブルの高圧端子板の高電圧部分を
完全に密閉する。そして、測定用高圧線によって被測定
ケーブルの導体に直流高電圧を印加し、被測定ケーブル
に流れる電流の大きさなどを計測する。
(57) [Summary] (Modified) [Purpose] Anyone can easily seal the end of the high-voltage line for measurement, the end of the cable under test, and the high-voltage part of the terminal plate connected to it. It suppresses the occurrence of air discharge in the air and prevents the ions from flowing out. [Structure] Injecting an inert gas at a predetermined pressure from the gas inlet 3 into the inside of the high-voltage processing member A for measuring DC leakage current,
Expansion of the high-voltage part processing member A for measuring DC leakage current, which is a flexible resin, presses the high-voltage part processing member B for measuring DC leakage current of hard resin, and this force is applied to the wall surface of the through hole 2 for measurement. Attach the high voltage wire for high voltage to the terminal of the high voltage terminal board or cable to be measured. In this manner, the end of the high-voltage line for measurement, the end of the cable to be measured, the alligator clip of the high-voltage line for measurement, and the high-voltage portion of the high-voltage terminal plate of the cable to be measured are completely sealed. Then, a high DC voltage is applied to the conductor of the cable to be measured by the high voltage wire for measurement, and the magnitude of the current flowing through the cable to be measured is measured.
Description
【０００１】[0001]
本考案は、直流漏れ電流測定における測定用高圧線の端部と被測定ケーブルの 端部及び端子板での気中放電を抑制すると共に、生成したイオンが外部に流出す ることを防止する高電圧部処理部材に係り、特に、取り付け取り外しが容易で、 絶縁を容易に確保することができる直流漏れ電流測定用高電圧部処理部材に関す The present invention suppresses the air discharge at the end of the high voltage line for measurement, the end of the cable to be measured and the terminal plate in the DC leakage current measurement, and also prevents the generated ions from flowing out. The present invention relates to a high voltage part processing member for DC leakage current measurement, which can be easily attached and removed and can easily ensure insulation.
【０００２】 る。[0002]
電力ケーブルは、布設環境などの要因により、そのケーブルの絶縁体中に水ト リーが発生し、最悪の場合、絶縁破壊事故に至ることもある。このため、電力ケ ーブルの絶縁劣化状態を定期的に診断する必要がある。その絶縁診断法の１つに 直流漏れ電流法がある。この直流漏れ電流試験は電力ケーブルの絶縁体に所定の 直流高電圧を印加し絶縁体中に流れる電流の大きさなどの電流時間特性を調査す るものであり、絶縁体中に水トリーなどが発生し劣化が進行していると、その電 流値は大きい或いは時間に対して増加する傾向を示す。 Due to factors such as the installation environment of power cables, a water tree may be generated in the insulation of the cables, and in the worst case, a dielectric breakdown accident may occur. Therefore, it is necessary to regularly diagnose the insulation deterioration state of the power cable. The DC leakage current method is one of the insulation diagnosis methods. This DC leakage current test is to investigate the current-time characteristics such as the magnitude of the current flowing in the insulator by applying a predetermined DC high voltage to the insulator of the power cable. When it occurs and the deterioration progresses, the current value tends to be large or increase with time.
【０００３】 電力ケーブルの直流漏れ電流の測定は、従来、図５に示す如く直流漏れ電流を 測定するための直流高電圧発生器と直流漏れ電流測定装置を金属遮蔽層（遮蔽軟 銅テープ）との間に直列に接続して行われている。すなわち、所定の直流高電圧 を発生する直流高電圧発生器Ａに接続される測定用高圧線１００を測定用高圧線 １００の先端に取り付けられたワニグチクリップ１２０によって被測定ケーブル ２００の導体２１０に接続された端子板２２０に接続する。さらに、被測定ケー ブル２００の導体２１０の上に被覆された絶縁体２３０の上側に位置する接地線 ９００で対地電位となっている金属遮蔽層２４０と直流漏れ電流測定装置Ｂを測 定用高圧線Ｃで接続する。そして、測定用高圧線１００によって被測定ケーブル ２００の導体２１０に直流高電圧を印加し、導体２１０から絶縁体２３０内を通 り金属遮蔽層２４０に流れる電流の大きさなどを直流漏れ電流測定装置Ｂによっ て計測する。このときに観測される漏れ電流の大きさ、あるいは時間特性の変化 から絶縁劣化状態が評価されている。Conventionally, the DC leakage current of a power cable has been measured by using a DC high voltage generator and a DC leakage current measuring device for measuring the DC leakage current as shown in FIG. 5 with a metal shielding layer (shielding soft copper tape). It is done by connecting in series between. That is, the high-voltage cable 100 for measurement connected to the high-voltage DC generator A that generates a predetermined high-voltage DC is connected to the conductor 210 of the cable 200 to be measured by the alligator clip 120 attached to the tip of the high-voltage cable 100 for measurement. Connected to the terminal plate 220. Further, the metal shield layer 240 and the DC leakage current measuring device B, which are at the ground potential at the ground line 900 located above the insulator 230 coated on the conductor 210 of the cable to be measured 200, are used for the measurement high voltage. Connect with line C. Then, a DC high voltage is applied to the conductor 210 of the cable to be measured 200 by the high voltage line for measurement 100, and the magnitude of the current flowing from the conductor 210 through the insulator 230 to the metal shield layer 240 is measured by the DC leakage current measuring device. Measure with B. The state of insulation deterioration is evaluated from the magnitude of the leakage current observed at this time or changes in the time characteristics.
【０００４】 この際、特に布設ケーブルの場合、図６に示す如く、端子板２２０が屋内配電 盤３００内にある。しかも、端子板２２０と接地線９００で接続されている屋内 配電盤３００との離隔距離が十分でないため、端子板２２０と屋内配電盤３００ との間で図６の矢印Ｅに示す如く気中放電が発生する。その放電によって生成さ れたイオンが気中、屋内配電盤３００、屋内配電盤３００に接続されている接地 線９００、金属遮蔽層２４０、測定用低圧線Ｃを通して直流漏れ電流測定装置Ｂ に流れ込み、被測定ケーブル２００を流れる電流（直流漏れ電流）に重畳するた め、直流漏れ電流の大きさなどを正確に計測することができない。At this time, particularly in the case of a laid cable, as shown in FIG. 6, the terminal plate 220 is inside the indoor switchboard 300. Moreover, since the distance between the terminal board 220 and the indoor switchboard 300 connected by the ground wire 900 is not sufficient, air discharge occurs between the terminal board 220 and the indoor switchboard 300 as shown by arrow E in FIG. To do. Ions generated by the discharge flow into the DC leakage current measuring device B through the indoor switchboard 300, the ground wire 900 connected to the indoor switchboard 300, the metal shield layer 240, and the low-voltage line C for measurement in the air, and the measured object is measured. Since it is superimposed on the current (DC leakage current) flowing through the cable 200, the magnitude of the DC leakage current cannot be accurately measured.
【０００５】 そこで、従来は、直流高電圧発生器Ａに接続される測定用高圧線１００の端部 及びその先端に取り付けられたワニグチクリップ１２０と被測定ケーブル２００ の導体２１０及びそれに接続された端子板２２０に絶縁テープあるいはシート１ ８０を巻いて、直流漏れ電流を測定していた。Therefore, conventionally, the alligator clip 120 attached to the end of the high-voltage wire for measurement 100 connected to the DC high voltage generator A and the conductor 210 of the cable to be measured 200 and the terminal connected thereto. An insulating tape or sheet 180 was wrapped around the plate 220 and the DC leakage current was measured.
【０００６】 また、従来は、直流高電圧発生器Ａに接続される測定用高圧線１００の端部及 びその先端に取り付けられたワニグチクリップ１２０と被測定ケーブル２００の 導体２１０及びそれに接続された端子板２２０の周辺をシールドリング及びシー ルドリングとＰＥカバーの一体構造のもので覆って、直流漏れ電流を測定してい た。Further, conventionally, the alligator clip 120 attached to the end of the high-voltage wire for measurement 100 connected to the high-voltage DC generator A and the tip thereof, the conductor 210 of the cable to be measured 200, and the terminal connected thereto. A DC leakage current was measured by covering the periphery of the plate 220 with a shield ring, a shield ring, and an integral structure of a PE cover.
【０００７】[0007]
このようにして被測定ケーブル２００の絶縁体２３０の直流漏れ電流の測定が 終了すると、測定用高圧線１００の端部及びワニグチクリップ１２０と被測定ケ ーブル２００の導体２１０及び端子板２２０を覆った絶縁テープあるいはシート 、シールドリングあるいはシールドリングとＰＥカバーの一体物を取り去り、被 測定ケーブル２００の導体２１０の端子板２２０に接続された測定用高圧線１０ ０のワニグチクリップ１２０を取り外す。 When the measurement of the DC leakage current of the insulator 230 of the cable to be measured 200 is completed in this way, the end portion of the high voltage line for measurement 100, the alligator clip 120, the conductor 210 of the cable to be measured 200 and the terminal plate 220 are covered. The insulating tape or sheet, the shield ring or the shield ring and the integral body of the PE cover are removed, and the alligator clip 120 of the measurement high voltage wire 100 connected to the terminal plate 220 of the conductor 210 of the cable to be measured 200 is removed.
【０００８】 このような従来の測定用高圧線１００の端部及びその先端のワニグチクリップ １２０と被測定ケーブル２００の導体２１０及びそれに接続された端子板２２０ に絶縁テープあるいはシート１８０を巻いて、直流漏れ電流を測定する方法にあ っては、巻きむらによって図７に示す如く外気に触れた部分が生じることもある 。このため、端子板２２０から図７に図示の矢印Ｅに示す如く気中放電が生じイ オンが流出し、ケーブルの直流漏れ電流に重畳する。また、直流漏れ電流測定後 容易に絶縁テープを取り去ることができず、直流漏れ電流測定の作業性が悪いと いうという問題点を有している。An insulating tape or sheet 180 is wound around the crocodile clip 120 at the end and the tip of the conventional high-voltage wire 100 for measurement, the conductor 210 of the cable to be measured 200, and the terminal plate 220 connected thereto, and a DC In the method of measuring the leakage current, there may be a portion exposed to the outside air due to uneven winding as shown in FIG. Therefore, an air discharge is generated from the terminal plate 220 as shown by an arrow E in FIG. 7, and ions flow out, which is superposed on the DC leakage current of the cable. Further, there is a problem in that the workability of measuring the DC leakage current is poor because the insulating tape cannot be easily removed after the DC leakage current measurement.
【０００９】 さらに、従来の測定用高圧線１００の端部及びその先端のワニグチクリップ１ ２０と被測定ケーブル２００の導体２１０及びそれに接続された端子板２２０の 周辺をシールドリング又はシールドリングとＰＥの一体構造のもので覆い、直流 漏れ電流を測定する方法にあっては、以下の問題点を有している。Further, the periphery of the alligator clip 120 at the end and the tip of the conventional high-voltage line for measurement 100, the conductor 210 of the cable to be measured 200, and the terminal plate 220 connected thereto is surrounded by a shield ring or a shield ring and PE. The method of measuring the DC leakage current by covering with an integral structure has the following problems.
【００１０】 （１）シールドリングのみの場合には表面の傷により、電界を集中させ、気中放 電を生じやすくするという問題点を有している。(1) In the case of only the shield ring, there is a problem that the electric field is concentrated due to the scratches on the surface, and the air discharge is likely to occur.
【００１１】 （２）シールドリングとＰＥの一体構造では高電圧部が絶縁物で完全に密閉され ていない場合がある。このために屋内配電盤との隔離距離が十分でないと、気中 放電が生じイオンが流出し、ケーブルの直流漏れ電流に重畳するという問題点を 有している。(2) In the integrated structure of the shield ring and PE, the high voltage part may not be completely sealed with an insulator. For this reason, if the separation distance from the indoor switchboard is not sufficient, an air discharge will occur, causing ions to flow out and superimpose on the DC leakage current of the cable.
【００１２】 本考案は、従来の技術の有するこのような問題点に鑑みてなされたものであり 、その目的とするところは、布設されたケーブルの直流漏れ電流測定時に現場で 誰にでも簡単に高電圧部を密閉でき、気中放電の発生を抑制するとともに、イオ ンが外部に流出することを防止できる漏れ電流測定用高圧部処理部材を提供しよ うとするものである。The present invention has been made in view of the above problems of the conventional technique, and an object of the present invention is to make it easy for anyone in the field to measure a DC leakage current of a laid cable. It is an object of the present invention to provide a high-voltage processing member for leak current measurement, which can seal the high-voltage part, suppress the occurrence of air discharge, and prevent ions from flowing out.
【００１３】[0013]
上記目的を達成するために、本考案の直流漏れ電流測定用高圧部処理部材は、 可撓性を有する樹脂によってドーナツ状に形成すると共に内部に絶縁性を有する 気体を封入可能に構成し、絶縁性を有する気体を内部に封入した際に異形の筒状 に形成されるものであって、前記内径で測定用高圧線の端部と、被測定ケーブル の端部及び端子板の高電圧部分を覆って内部に絶縁性を有する気体を封入して膨 らませたときに高電圧部分を完全に密閉することによって、高電圧部での気中放 電の発生を抑制すると共に、生成したイオンが外部に流出することを防止するよ うにしたものである。 In order to achieve the above-mentioned object, the high-voltage processing member for measuring DC leakage current of the present invention is made of a flexible resin in a donut shape and has an insulating gas inside so that it can be sealed. It is formed into a deformed tubular shape when a gas having a property is filled inside, and the end of the high voltage line for measurement, the end of the cable to be measured and the high voltage part of the terminal board are By covering the inside of the high-voltage part with a gas that has an insulating property and expanding it, the high-voltage part is completely sealed to suppress the generation of air discharge in the high-voltage part. It is designed to prevent leakage to the outside.
【００１４】[0014]
直流漏れ電流測定用高電圧部処理部材の貫通孔に測定用高圧線の先端に取り付 けてあるワニグチクリップを通す。このワニグチクリップを被測定ケーブルの導 体に接続されている高圧端子板に接続し、直流漏れ電流測定用高電圧部処理部材 である可撓性樹脂及び硬質樹脂を、この順に通し、測定用高圧線の端部及びその 先端のワニグチクリップと被測定ケーブルの導体及びそれに接続された高圧端子 板を直流漏れ電流測定用高電圧部処理部材で覆う。 Pass the alligator clip attached to the tip of the high-voltage line for measurement through the through-hole of the high-voltage section processing member for measuring DC leakage current. Connect this alligator clip to the high-voltage terminal board connected to the conductor of the cable to be measured, and pass the flexible resin and the hard resin, which are the high-voltage section processing members for DC leakage current measurement, in this order, and Cover the crocodile clip at the end of the wire and its tip, the conductor of the cable to be measured, and the high-voltage terminal board connected to it with the high-voltage processing member for measuring DC leakage current.
【００１５】 しかる後、気体投入口から直流漏れ電流測定用高電圧部処理部材の内部へ不活 性気体を所定圧力で注入し、直流漏れ電流測定用高電圧部処理部材の膨脹によっ て貫通孔の壁面を高圧端子板や被測定ケーブルの端末に押圧する。このようにし て、測定用高圧線の端部及びワニグチクリップと、被測定ケーブルの導体及びそ れに接続された高圧端子板の高電圧部分を完全に密閉する。そして、測定用高圧 線によって被測定ケーブルの導体に直流高電圧を印加し、被測定ケーブルに流れ る電流の大きさなどを計測する。Thereafter, an inert gas is injected from the gas inlet into the high-voltage section processing member for measuring DC leakage current at a predetermined pressure, and the high-voltage section processing member for measuring DC leakage current is expanded to penetrate. Press the wall of the hole against the terminal of the high voltage terminal board or the cable to be measured. In this way, the end of the high-voltage line for measurement and the alligator clip, the conductor of the cable under test and the high-voltage part of the high-voltage terminal board connected to it are completely sealed. Then, a high DC voltage is applied to the conductor of the cable to be measured by the high voltage line for measurement, and the magnitude of the current flowing through the cable to be measured is measured.
【００１６】[0016]
以下、本考案の実施例について説明する。 図１〜図４には、本考案に係る直流漏れ電流測定用高電圧部処理部材の一実施 例が示されている。 Embodiments of the present invention will be described below. 1 to 4 show an embodiment of a high voltage portion processing member for measuring a DC leakage current according to the present invention.
【００１７】 図において、１は直流漏れ電流測定用高電圧部処理部材である。図１のＡの如 きドーナツ状に形成された可撓性樹脂とＢの如き筒状に形成された硬質樹脂の２ つから構成されている。この直流漏れ電流測定用高電圧部処理部材Ａは、可撓性 を有する天然ゴム、合成ゴム等を材料とした異形のドーナツ状ゴム質絶縁物で構 成されており、さらに、Ｂはポリエチレン等を材料とした筒状の硬質絶縁物で構 成されている。直流漏れ電流測定用高電圧部処理部材Ａ及びＢの中央には、貫通 孔２が設けられている。In the figure, reference numeral 1 is a high voltage section processing member for measuring a DC leakage current. It is composed of a doughnut-shaped flexible resin such as A in FIG. 1 and a tubular hard resin such as B. The high-voltage portion processing member A for measuring the DC leakage current is composed of a deformed donut-shaped rubber insulator made of flexible natural rubber, synthetic rubber or the like, and B is polyethylene or the like. It is composed of a cylindrical hard insulator made of. A through hole 2 is provided in the center of the high-voltage processing members A and B for measuring the DC leakage current.
【００１８】 また、この直流漏れ電流測定用高電圧部処理部材Ａには、下部に気体投入口３ が設けられており、直流漏れ電流測定用高電圧部処理部材Ａ全体が袋状になって いる。この気体投入口３には、０．１〜２．０Ｋｇ／ｃｍ2 の圧力のガスが投入 されるようになっている。この気体投入口３から投入されるガスの種類としては 、不活性気体であるヘリウム（Ｈｅ）やＮ2 、ＣＯ2 、ＳＦ6 等がある。したが って、直流漏れ電流測定用高電圧部処理部材Ａは、内部にガスが封入されると、 図２に示す如く異形の筒状に膨脹する。そして、直流漏れ電流測定用高電圧部処 理部材Ｂによって、圧力が貫通孔側に加わりやすい構成となっている。Further, this DC leakage current measuring high voltage part processing member A is provided with a gas inlet 3 at the bottom, and the entire DC leakage current measuring high voltage part processing member A is in the shape of a bag. There is. A gas having a pressure of 0.1 to 2.0 Kg / cm 2 is introduced into the gas inlet 3. The types of gas introduced through the gas inlet 3 include helium (He) which is an inert gas, N 2 , CO 2 , SF 6 and the like. Therefore, the high voltage portion processing member A for measuring the DC leakage current expands into a deformed tubular shape as shown in FIG. 2 when gas is enclosed inside. The pressure is easily applied to the through-hole side by the DC leakage current measuring high voltage portion processing member B.
【００１９】 次に、この直流漏れ電流測定用高電圧部処理部材Ａ及びＢを使用して被測定ケ ーブルの直流漏れ電流を測定する方法を説明する。 まず、直流漏れ電流測定用高電圧部処理部材Ａ及びＢの貫通孔２に、予め図３ に示す如く、測定用高圧線４を通す。そして、測定用高圧線４の先端に取り付け てあるワニグチクリップ５を被測定ケーブル６の導体８に接続されている高圧端 子板７に接続する。しかる後、直流漏れ電流測定用高電圧部処理部材Ａ及びＢを 図３に図示の矢印Ａ１、Ｂ１に示す如く下方に引き下げ、測定用高圧線４の端部 及びワニグチクリップ５と被測定ケーブル６の導体及びそれに接続された高圧端 子板７を直流漏れ電流測定用高電圧部処理部材Ａ及びＢで覆う。Next, a method for measuring the DC leakage current of the cable to be measured by using the DC leakage current measuring high voltage processing members A and B will be described. First, as shown in FIG. 3, a high voltage line for measurement 4 is previously passed through the through holes 2 of the high voltage section processing members A and B for measuring the DC leakage current. Then, the alligator clip 5 attached to the tip of the measuring high-voltage wire 4 is connected to the high-voltage terminal plate 7 connected to the conductor 8 of the measured cable 6. Thereafter, the DC leakage current measurement high-voltage section processing members A and B are pulled down as indicated by arrows A1 and B1 in FIG. 3, and the end of the measurement high-voltage line 4, the alligator clip 5, and the cable to be measured 6 are measured. The conductor and the high-voltage terminal plate 7 connected thereto are covered with the high-voltage processing members A and B for measuring the DC leakage current.
【００２０】 測定用高圧線４の端部及びワニグチクリップ５と被測定ケーブル６の導体及び それに接続された高圧端子板７を直流漏れ電流測定用高電圧部処理部材Ａで覆う と、直流漏れ電流測定用高電圧部処理部材Ａの気体投入口３から不活性気体であ るヘリウム（Ｈｅ）やＮ2 、ＣＯ2 、ＳＦ6 等を０．１〜２．０Ｋｇ／ｃｍ2 の 圧力で投入する。すると、直流漏れ電流測定用高電圧部処理部材Ａが膨脹し、外 周の直流漏れ電流測定用高電圧部処理部材Ｂに圧迫され貫通孔２の壁面が図４に 示したように測定用高圧線４や高圧端子板７や被測定ケーブル６の端末に接触す る。さらに、気体投入口３から投入するガスの圧力をケーブルのサイズに応じて 調整すると、貫通孔２の壁面は、高圧端子板７や被測定ケーブル６の端末に密着 し、固定される。したがって、高電圧部分を完全に密閉する。When the end of the high-voltage line 4 for measurement, the alligator clip 5, the conductor of the cable 6 to be measured, and the high-voltage terminal plate 7 connected thereto are covered with the high-voltage section processing member A for measuring DC leakage current, the DC leakage current is fed through the gas inlet 3 of the measuring high-voltage unit processing member a inert gas der Ru helium (He) or N 2, CO 2, SF 6 or the like at a pressure of 0.1 to 2.0 / cm 2 . Then, the high voltage portion processing member A for measuring the DC leakage current expands and is pressed by the high voltage portion processing member B for measuring the DC leakage current on the outer periphery, and the wall surface of the through hole 2 is measured as shown in FIG. It contacts the wire 4, the high-voltage terminal board 7, and the end of the cable 6 to be measured. Furthermore, when the pressure of the gas introduced from the gas inlet 3 is adjusted according to the size of the cable, the wall surface of the through hole 2 is in close contact with and fixed to the high-voltage terminal plate 7 and the end of the cable 6 to be measured. Therefore, the high voltage part is completely sealed.
【００２１】 この状態で、測定用高圧線によって被測定ケーブル６の導体（図示されていな い）８に直流高電圧を印加し、被測定ケーブル６に流れる電流の大きさなどを計 測する。測定後は、気体投入口３から直流漏れ電流測定用高電圧部処理部材Ａ内 のガスを抜き取ることにより収縮させ、直流漏れ電流測定用高電圧部処理部材Ａ 及びＢを上方に引き上げ、測定用高圧線４の端部及びその先端のワニグチクリッ プ５と被測定ケーブル６の導体及びそれに接続された高圧端子板７の覆いを外す 。そして、測定用高圧線４の先端のワニグチクリップ５を被測定ケーブル６の高 圧端子板７から取り外す。In this state, a DC high voltage is applied to the conductor (not shown) 8 of the cable to be measured 6 by the high voltage line for measurement, and the magnitude of the current flowing through the cable to be measured 6 is measured. After the measurement, the gas in the DC leakage current measuring high-voltage section processing member A is contracted by extracting from the gas inlet 3, and the DC leakage current measuring high-voltage section processing members A and B are pulled upward to measure. Remove the cover of the crocodile clip 5 at the end of the high-voltage line 4 and its tip, the conductor of the cable to be measured 6 and the high-voltage terminal plate 7 connected to it. Then, the alligator clip 5 at the tip of the measurement high-voltage wire 4 is removed from the high-voltage terminal plate 7 of the cable 6 to be measured.
【００２２】 したがって、本実施例によれば、直流漏れ電流測定用高電圧部処理部材として 気体を入れたゴム質絶縁物を使用するため、従来のようにテープの巻き回しする といった作業が必要なく、容易に絶縁を確保することができ、作業性を大幅に向 上することができる。Therefore, according to the present embodiment, since the rubber-like insulating material containing the gas is used as the high voltage portion processing member for measuring the DC leakage current, there is no need to wind the tape like the conventional work. Insulation can be secured easily and workability can be greatly improved.
【００２３】 また、本実施例によれば、測定後は、直流漏れ電流測定用高電圧部処理部材内 の気体を抜き取ることにより、容易に取り外すことができ、作業性を大幅に向上 することができる。Further, according to the present embodiment, after the measurement, the gas in the high-voltage processing member for measuring the DC leakage current can be easily removed, and the workability can be greatly improved. it can.
【００２４】 さらに、本実施例によれば、シールドリングのみを使用する場合と比べて、表 面の傷により、電界を集中させることがない。Further, according to this embodiment, the electric field is not concentrated due to the scratches on the surface, as compared with the case where only the shield ring is used.
【００２５】 また、本実施例によれば、直流漏れ電流測定用高電圧部処理部材として気体を 入れたゴム質絶縁物を使用し、このゴム質絶縁物の膨脹力により直流漏れ電流測 定用高電圧部処理部材の貫通孔２の壁面が、測定用高電圧線４や高圧端子板７や 被測定ケーブル６の端末に密着し、固定する。したがって、高電圧部分を完全に 密閉にすることができる。Further, according to this embodiment, a rubber-like insulating material containing a gas is used as the high-voltage part processing member for measuring the DC leakage current, and the expansion force of the rubber-like insulating material is used to measure the DC leakage current. The wall surface of the through-hole 2 of the high-voltage section processing member is in close contact with and fixed to the measurement high-voltage wire 4, the high-voltage terminal board 7, and the end of the cable 6 to be measured. Therefore, the high voltage part can be completely sealed.
【００２６】[0026]
以上説明したように構成されているため、本考案によれば、測定用高圧線の端 部と被測定ケーブルの導体及びそれに接続された端子板を誰にでも簡単に密閉で き、高電圧部での気中放電の発生を抑制すると共に、イオンが外部に流出するこ とを防止できる。 According to the present invention, because of the configuration described above, anyone can easily seal the end of the high-voltage line for measurement, the conductor of the cable under test, and the terminal plate connected to it, and the high-voltage part. It is possible to suppress the occurrence of air discharge in the air and prevent the ions from flowing out.
【図１】本考案に係る直流漏れ電流測定用高電圧部処理
部材の実施例を示す全体斜視図である。FIG. 1 is an overall perspective view showing an embodiment of a high voltage part processing member for measuring a DC leakage current according to the present invention.
【図２】図１に図示の直流漏れ電流測定用高電圧部処理
部材を膨らませた状態を示す図である。FIG. 2 is a view showing a state where the high-voltage processing member for measuring the DC leakage current shown in FIG. 1 is inflated.
【図３】図１に図示の直流漏れ電流測定用高電圧部処理
部材を測定用高圧線の端部と被測定ケーブルの導体及び
それに接続された端子板に取り付ける状態を示す図であ
る。FIG. 3 is a diagram showing a state in which the DC leakage current measuring high-voltage section processing member shown in FIG. 1 is attached to the end of the measuring high-voltage line, the conductor of the cable to be measured, and the terminal plate connected thereto.
【図４】図３に図示の測定用高圧線の端部と被測定ケー
ブルの導体及びそれに接続された端子板に取り付けた直
流漏れ電流測定用高電圧部処理部材の内部にガスを注入
した状態を示す図である。FIG. 4 shows a state in which a gas is injected into the inside of a DC leakage current measuring high voltage part processing member attached to the end of the measuring high voltage line shown in FIG. 3, the conductor of the cable to be measured, and the terminal plate connected to the conductor. FIG.
【図５】直流漏れ電流測定方法を示す図である。FIG. 5 is a diagram showing a DC leakage current measuring method.
【図６】従来の布設されたケーブルの直流漏れ電流測定
方法における気中放電の説明図である。FIG. 6 is an explanatory diagram of air discharge in a conventional method for measuring a DC leakage current of a laid cable.
【図７】図６に図示の従来の測定用高圧線と被測定ケー
ブルの高電圧処理力法の問題点を説明するための図であ
る。FIG. 7 is a diagram for explaining problems of the conventional high voltage line for measurement shown in FIG. 6 and the high voltage processing force method of the cable to be measured.
１………………………………………直流漏れ電流測定用
高電圧部処理部材 ２………………………………………貫通孔 ３………………………………………気体投入口 ４………………………………………測定用高圧線 ５………………………………………ワニグチクリップ ６………………………………………被測定ケーブル ７………………………………………高圧端子板 ８………………………………………導体1 …………………………………………………………………………………………………………………………………………………………………… Through hole 3 ……………… ……………………………… Gas inlet 4 ………………………………………… High-voltage wire for measurement 5 ………………………………………… Alligator Clip 6 …………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… ……………conductor
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【手続補正書】[Procedure amendment]
【提出日】平成４年９月１８日[Submission date] September 18, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】考案の名称[Name of item to be corrected] Name of device
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【考案の名称】 直流漏れ電流測定用高電圧部処理部材[Title of device] High voltage part processing member for DC leakage current measurement
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Name of item to be corrected] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】図７[Name of item to be corrected] Figure 7
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図７】図６に図示の従来の測定用高圧線と被測定ケー
ブルの高電圧処理方法の問題点を説明するための図であ
る。7 is a diagram for explaining a problem of a high-voltage process how a conventional measuring high voltage line and the measured cable shown in FIG.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】図６[Name of item to be corrected] Figure 6
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図６】 [Figure 6]
Claims (1)
に形成すると共に内部に絶縁性を有する気体を封入可能
に構成し、絶縁性を有する気体を内部に封入した際に筒
状に形成されるものであって、この外周に絶縁性を有す
る材料からなる筒状の硬質樹脂を取り付けて、前記内径
で測定用高圧線の端部と、被測定ケーブルの端部及び端
子板の高電圧部分を覆って内部に絶縁性を有する気体を
封入して膨らませたときに高電圧部分を密閉することに
よって、高電圧部分での気中放電の発生を抑制すると共
に、生成したイオンが外部に流出することを防止するよ
うにしたことを特徴とする直流漏れ電流測定用接続処理
部材。1. A doughnut-shaped member made of a flexible resin and configured so that an insulating gas can be enclosed therein, and the insulating gas is formed into a tubular shape when enclosed inside. A cylindrical hard resin made of a material having an insulating property is attached to the outer periphery of the high-voltage wire for measurement at the inner diameter, the end of the cable to be measured, and the high-voltage portion of the terminal board. By covering the inside of the high-voltage part by enclosing it with an insulating gas and expanding it, the high-voltage part is sealed to suppress the occurrence of air discharge in the high-voltage part and the generated ions flow out to the outside. A connection processing member for measuring DC leakage current, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2853792U JPH0587577U (en) | 1992-04-28 | 1992-04-28 | High-voltage processing component for DC leakage current measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2853792U JPH0587577U (en) | 1992-04-28 | 1992-04-28 | High-voltage processing component for DC leakage current measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0587577U true JPH0587577U (en) | 1993-11-26 |
Family
ID=12251423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2853792U Pending JPH0587577U (en) | 1992-04-28 | 1992-04-28 | High-voltage processing component for DC leakage current measurement |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0587577U (en) |
-
1992
- 1992-04-28 JP JP2853792U patent/JPH0587577U/en active Pending
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