JP2918376B2 - Cable head for device connection - Google Patents
Cable head for device connectionInfo
- Publication number
- JP2918376B2 JP2918376B2 JP35948991A JP35948991A JP2918376B2 JP 2918376 B2 JP2918376 B2 JP 2918376B2 JP 35948991 A JP35948991 A JP 35948991A JP 35948991 A JP35948991 A JP 35948991A JP 2918376 B2 JP2918376 B2 JP 2918376B2
- Authority
- JP
- Japan
- Prior art keywords
- cable
- internal electrode
- electrical connection
- connection member
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004020 conductor Substances 0.000 claims description 27
- 238000012360 testing method Methods 0.000 claims description 22
- 238000000605 extraction Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 241000722921 Tulipa gesneriana Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
- Electric Cable Installation (AREA)
- Cable Accessories (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ケーブル線路と機器と
の間を接続する機器接続用ケーブルヘッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable head for connecting equipment between a cable line and equipment.
【０００２】[0002]
【従来の技術】ＧＩＳ（ガス絶縁遮断器）のような高電
圧機器相互間をケーブル線路で接続する場合、一般に次
のような構成が採用される。図４に従来の機器と機器接
続用ケーブルヘッドの側面図を示す。図において、機器
１は例えば、上記ＧＩＳのような高電圧機器で、その壁
面２に対しブッシング３を介してケーブル線路４が接続
されている。この機器１の内部装置５はブッシング３に
対し母線６を介して電気接続される。また機器１の内部
は六フッ化硫黄等の絶縁性ガス７によって絶縁されてい
る。このような設備の取付けにあたっては、予め機器１
やケーブル線路４をそれぞれ個別に電気試験しておく
外、ブッシング３等の取付け完了後、装置全体としての
電気試験を行う必要がある。この場合、ケーブル線路４
を通じて試験用の交流電圧を課電する、いわゆるＡＣ耐
圧試験等が行われる。2. Description of the Related Art When high-voltage devices such as GIS (gas-insulated circuit breakers) are connected to each other by cable lines, the following configuration is generally employed. FIG. 4 shows a side view of a conventional device and a cable head for device connection. In the figure, a device 1 is, for example, a high-voltage device such as the GIS described above, and a cable line 4 is connected to a wall surface 2 of the device 1 via a bushing 3. An internal device 5 of the device 1 is electrically connected to the bushing 3 via a bus 6. The inside of the device 1 is insulated by an insulating gas 7 such as sulfur hexafluoride. When installing such equipment, the equipment 1
In addition to individually performing an electrical test on the cable and the cable line 4, it is necessary to perform an electrical test on the entire apparatus after the installation of the bushing 3 and the like is completed. In this case, cable line 4
A so-called AC withstand voltage test or the like, in which an AC voltage for testing is impressed through the test.
【０００３】[0003]
【発明が解決しようとする課題】ところで、一般にケー
ブル線路４は、機器１等と比較して静電容量が極めて大
きい。従って、直流高電圧を印加するいわゆるＤＣ耐圧
試験の方が、ケーブル線路４の電気特性を正確にとらえ
ることができる。しかしながら、ケーブル線路４を機器
１に接続した後、ＤＣ耐圧試験を実施すると次のような
問題が生じる。即ち、機器１の内部には絶縁性ガス７が
充填されているが、絶縁性ガス７中には相当量の塵が浮
遊している。従って、ケーブル線路４を通じて母線６等
に直流高電圧が印加されると、いわゆる電気集塵器の原
理で、塵が機器の内部に集中的に付着する。従って、こ
れによって絶縁性能を低下させてしまう恐れがある。こ
のため、従来は機器１への装着後のケーブル線路４に対
しＤＣ耐圧試験を行うことが難しいという問題があっ
た。本発明は以上の点に着目してなされたもので、機器
の内部に直流電圧が印加されるのを防止しつつ、機器に
接続されたケーブル線路のＤＣ耐圧試験を可能とする機
器接続用ケーブルヘッドを提供することを目的とするも
のである。Generally, the cable line 4 has an extremely large capacitance as compared with the equipment 1 or the like. Therefore, the so-called DC withstand voltage test in which a high DC voltage is applied can more accurately capture the electrical characteristics of the cable line 4. However, when the DC withstand voltage test is performed after the cable line 4 is connected to the device 1, the following problem occurs. That is, the inside of the device 1 is filled with the insulating gas 7, and a considerable amount of dust floats in the insulating gas 7. Therefore, when a high DC voltage is applied to the bus 6 or the like through the cable line 4, dust is intensively adhered to the inside of the device by the so-called electric precipitator principle. Therefore, there is a possibility that the insulation performance may be reduced. For this reason, there has conventionally been a problem that it is difficult to perform a DC withstand voltage test on the cable line 4 attached to the device 1. The present invention has been made by paying attention to the above points, and is a device connection cable that enables a DC withstand voltage test of a cable line connected to a device while preventing a DC voltage from being applied to the inside of the device. It is intended to provide a head.
【０００４】[0004]
【課題を解決するための手段】本発明の機器接続用ケー
ブルヘッドは、機器と電気接続されるケーブル線路の終
端を受け入れるためのケーブル接続端部と、前記ケーブ
ル線路に試験用電圧を課電する課電用ケーブルの終端を
受け入れるための課電端部と、前記ケーブル接続端部と
前記課電端部とを電気接続する内部電極と、前記機器の
内部回路と電気接続される導体引き出し棒と、前記導体
引き出し棒と前記内部電極との間に設けられた中空部に
移動可能に嵌め込まれ電気接続部材と、前記ケーブル接
続端部と前記課電端部と前記内部電極と前記導体引き出
し棒と前記電気接続部材とを収容して、前記機器の壁面
に取り付けられるブッシングと、前記課電用ケーブルを
前記課電端部に装着したとき前記電気接続部材の移動と
ともに押されて、前記電気接続部材が前記導体引き出し
棒と前記内部電極との間の電気接続を遮断する状態に
し、前記課電用ケーブルを前記課電端部に装着しないと
き前記電気接続部材が前記導体引き出し棒と前記内部電
極との間を電気接続する状態に復帰させる弾性復帰部材
と、を備えたことを特徴とするものである。According to the present invention, there is provided a cable head for connecting a device to a terminal of a cable line electrically connected to the device.
A cable connection end for receiving the end, and the cable
Of the test cable to apply the test voltage to the
A power receiving end for receiving, and the cable connection end
An internal electrode for electrically connecting the power application end,
A conductor drawing rod electrically connected to an internal circuit, and the conductor
In the hollow part provided between the drawer bar and the internal electrode
A movably fitted electrical connection member and the cable connection member;
Connecting end, power receiving end, internal electrode, and conductor lead-out
A housing for receiving the rod and the electrical connection member,
The bushing attached to the
Movement of the electrical connection member when attached to the power application end;
Pushed together, the electrical connection member is pulled out of the conductor
Disconnecting the electrical connection between the rod and the internal electrode
If the power application cable is not attached to the power application end,
The electrical connection member is connected to the conductor pull-out rod and the internal
Elastic return member for returning to the state of electrical connection between poles
And characterized in that:
【０００５】[0005]
【作用】このケーブルヘッドには、ケーブル線路２０を
接続するケーブル接続端部Ａと課電用ケーブル３０を接
続する課電端部Ｂを設ける。また、ブッシング１１の中
に機器の内部回路と接続される導体引出し棒１３を設け
ると共にこれとケーブル接続端部Ａとの間を電気接続す
る電気接続部材１５を移動可能に配する。ケーブル線路
２０の直流耐圧試験の際には、この電気接続部材１５を
課電用ケーブル３０の導体端末により弾性復帰部材１６
の弾性力に抗して絶縁スペーサ１７を介して押す。これ
により、導体引出し棒１３とケーブル接続端部Ａとの間
が電気的に遮断され、ケーブル線路２０にのみ直流の試
験用電圧が課電される。課電用ケーブル３０を除去すれ
ば電気接続部材１５は元の位置に復帰する。The cable head is provided with a cable connection end A for connecting the cable line 20 and a power application end B for connecting the power application cable 30. In addition, a conductor lead bar 13 connected to an internal circuit of the device is provided in the bushing 11, and an electric connection member 15 for electrically connecting the lead 13 to the cable connection end A is movably arranged. At the time of the DC withstand voltage test of the cable line 20, the electric connection member 15 is connected to the elastic return member 16 by the conductor end of the power application cable 30.
Is pushed through the insulating spacer 17 against the elastic force of As a result, the connection between the conductor extraction rod 13 and the cable connection end A is electrically disconnected, and a DC test voltage is applied only to the cable line 20. If the power supply cable 30 is removed, the electrical connection member 15 returns to the original position.
【０００６】[0006]
【実施例】以下、本発明を図の実施例を用いて詳細に説
明する。図１は本発明の機器接続用ケーブルヘッド実施
例を示すもので、（ａ）はその縦断面図である。また、
（ｂ）は電気接続部材の側面図である。図において、機
器の壁面２にはブッシング１１が固定ボルト１２を介し
て固定されている。このブッシング１１の図１における
左側の一端は、機器の壁面２に設けられた貫通孔２Ａを
突き抜けて機器の内部に突出している。また、ブッシン
グ１１の内部には、機器の内部回路と接続される導体引
出し棒１３が設けられている。更に、このブッシング１
１の中央部分には、後で説明するケーブル線路や課電用
ケーブルとの電気接続を行う内部電極１４が配置されて
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 shows an embodiment of a cable head for device connection according to the present invention, and (a) is a longitudinal sectional view thereof. Also,
(B) is a side view of the electrical connection member. In the figure, a bushing 11 is fixed to a wall surface 2 of a device via a fixing bolt 12. One end of the bushing 11 on the left side in FIG. 1 penetrates a through hole 2A provided in the wall surface 2 of the device and protrudes into the device. Further, inside the bushing 11, a conductor lead bar 13 connected to an internal circuit of the device is provided. Furthermore, this bushing 1
An internal electrode 14 for electrically connecting to a cable line or a power application cable, which will be described later, is arranged in the central portion of 1.
【０００７】このブッシング１１の下側には、後で図２
を用いて説明するケーブル線路２０の終端を受け入れる
ためのケーブル接続端部Ａが設けられている。ブッシン
グ１１の図中の右側には、このブッシング１１を介して
ケーブル線路２０に試験用電圧を課電する課電用ケーブ
ル３０の終端を受け入れるための課電端部Ｂが設けられ
ている。この課電用ケーブル３０は、保護ケース３１を
用いてブッシング１１の課電端部Ｂに固定される。ま
た、課電用ケーブル３０の絶縁体上には、絶縁補強のた
めストレスコーン３２が嵌め込まれている。この課電用
ケーブル３０のケーブル終端構成は、従来一般の高電圧
ケーブルの終端構成と同一であり、更に詳細な説明は省
略する。Below the bushing 11, FIG.
A cable connection end A for receiving the end of the cable line 20 described with reference to FIG. On the right side of the bushing 11 in the drawing, a power application end B for receiving the end of a power application cable 30 for applying a test voltage to the cable line 20 via the bushing 11 is provided. The power application cable 30 is fixed to the power application end B of the bushing 11 using a protective case 31. A stress cone 32 is fitted on the insulator of the power supply cable 30 for insulation reinforcement. The cable terminal configuration of the power application cable 30 is the same as the conventional terminal configuration of a general high-voltage cable, and further detailed description is omitted.
【０００８】ここで、本発明の機器接続用ケーブルヘッ
ドにおいては、このブッシング１１の中空部に配されて
いる導体引出し棒１３と内部電極１４にはそれぞれ対向
して同軸的に筒状の中空部１３ａ，１４ａが設けられて
いる。これらの中空部１３ａ，１４ａには、図１（ｂ）
に示したような円筒状の電気接続部材１５が移動可能に
嵌め込まれる。図１（ｂ）に示すように、電気接続部材
１５は、図中、左側に大径部、右側に小径部を有する。
この電気接続部材１５の左側面にはコイルばねから成る
弾性復帰部材１６の一端が当接され、弾性復帰部材１６
の他端は導体引出し棒１３の中空部１３ａ内面に押し当
てるように挿入されている。弾性復帰部材１６は電気接
続部材１５を内部電極１４の中空部１４ａに向けて押圧
力を付与している。また、電気接続部材１５の右側面に
はエポキシ樹脂等から成る柱状の絶縁スペーサ１７がね
じ込み固定されている。Here, in the cable head for device connection of the present invention, the conductor extraction rod 13 and the internal electrode 14 disposed in the hollow portion of the bushing 11 are coaxially opposed to the cylindrical hollow portion. 13a and 14a are provided. These hollow portions 13a and 14a are provided in FIG.
Is movably fitted into the cylindrical electric connection member 15 as shown in FIG. As shown in FIG. 1B, the electric connection member 15 has a large diameter portion on the left side and a small diameter portion on the right side in the drawing.
One end of an elastic return member 16 made of a coil spring is in contact with the left side surface of the electric connection member 15, and the elastic return member 16
Is inserted so as to be pressed against the inner surface of the hollow portion 13a of the conductor extraction rod 13. The elastic return member 16 applies a pressing force to the electric connection member 15 toward the hollow portion 14a of the internal electrode 14. A columnar insulating spacer 17 made of epoxy resin or the like is screwed and fixed to the right side surface of the electric connection member 15.
【０００９】電気接続部材１５は円柱形の導体から構成
され、大径部及び小径部の外周には、ばね状の環状接触
子１５Ａが設けられている。即ち、この電気接続部材１
５を導体引出し棒１３の中空部１０ａに嵌め込むと、そ
の大径部に設けられた接触子１５Ａが導体引出し棒１３
の中空部１３ａ内面に電気的に接触する。また、電気接
続部材１５の小径部は、図２に示したように右方に移動
した状態で内部電極１４の中空部１４ａ内面に電気的に
接触する。これによって、図２に示した使用状態のとき
導体引出し棒１３と内部電極１４との間の電気接続が確
保される。The electrical connection member 15 is formed of a columnar conductor, and a spring-shaped annular contact 15A is provided on the outer periphery of the large diameter portion and the small diameter portion. That is, the electric connection member 1
5 is fitted into the hollow portion 10a of the conductor extraction rod 13, and the contact 15A provided on the large diameter portion thereof
Electrically contact the inner surface of the hollow portion 13a. The small-diameter portion of the electrical connection member 15 electrically contacts the inner surface of the hollow portion 14a of the internal electrode 14 while moving to the right as shown in FIG. Thereby, the electrical connection between the conductor extraction rod 13 and the internal electrode 14 is secured in the use state shown in FIG.
【００１０】一方、図１（ａ）に示すように課電用ケー
ブル３０を課電端部Ｂに装着すると、電気接続部材１５
は図の左方に押されてその回路を切断する。課電用ケー
ブル３０の端末部分は、図１（ａ）に示すように、絶縁
体３３を剥離した導体３４に差込みによって容易に電気
的接続ができるプラグ３６を取り付けている。プラグ３
６の外周には、同図（ｂ）に示した電気接続部材１５と
同様の接触子３６Ａが設けられている。従って、課電用
ケーブル３０を押し込んでプラグ３６を内部電極１４の
中空部１４ａに挿入することによって、このプラグ３６
を介して内部電極１４との間の電気接続が完了する。こ
の挿入時において、プラグ３６は、図１（ａ）に示した
ように絶縁スペーサ１７を介して電気接続部材１５を導
体引出し棒１３側にスライドさせる。これにより電気接
続部材１５の小径部が内部電極１４の中空部１４ａから
離れて回路が切断される。On the other hand, when the power supply cable 30 is attached to the power receiving end B as shown in FIG.
Is pushed to the left of the figure to cut the circuit. As shown in FIG. 1A, a terminal 36 of the power application cable 30 is provided with a plug 36 that can be easily electrically connected to the conductor 34 from which the insulator 33 has been peeled by being inserted. Plug 3
A contact 36A similar to the electric connection member 15 shown in FIG. Therefore, the plug 36 is inserted by inserting the plug 36 into the hollow portion 14a of the internal electrode 14 by pressing the power application cable 30.
And the electrical connection with the internal electrode 14 is completed. During this insertion, the plug 36 slides the electrical connection member 15 toward the conductor extraction rod 13 via the insulating spacer 17 as shown in FIG. As a result, the small-diameter portion of the electric connection member 15 is separated from the hollow portion 14a of the internal electrode 14, and the circuit is cut.
【００１１】尚、この内部電極１４の下側には、ケーブ
ル線路２０の終端を受け入れてこれと電気接続を行うた
めのチューリップコンタクト２１が設けられている。内
部電極１４に直流高電圧が印加された場合、ブッシング
１１の中空部の内壁面を伝わって絶縁破壊が生じるのを
防止するため、この中空部には六フッ化硫黄等の絶縁性
ガスが注入される。図２には上記のようなＤＣ耐圧試験
を終了し、通常の使用状態におけるブッシングの縦断面
図を示した。図のように、ブッシング１１のケーブル接
続端部Ａには、ケーブル線路２０の導体に接続された端
部２４が挿入され、チューリップコンタクト２１によっ
て内部電極１４との電気接続が行われている。尚、この
ケーブル線路２０は保護ケース２３によってブッシング
１１に固定され、その絶縁体上には絶縁補強のためスト
レスコーン２２が嵌め込まれている。その他のケーブル
終端構造は、課電用ケーブルのものと同様、従来一般に
採用されている構成と変わるところはない。A tulip contact 21 is provided below the internal electrode 14 for receiving the end of the cable line 20 and making an electrical connection therewith. When a high DC voltage is applied to the internal electrode 14, an insulating gas such as sulfur hexafluoride is injected into the hollow portion of the bushing 11 to prevent the dielectric breakdown from occurring along the inner wall surface of the hollow portion of the bushing 11. Is done. FIG. 2 shows a longitudinal sectional view of the bushing in a normal use state after the above-described DC withstand voltage test is completed. As shown in the figure, an end 24 connected to the conductor of the cable line 20 is inserted into the cable connection end A of the bushing 11, and an electrical connection with the internal electrode 14 is made by the tulip contact 21. The cable line 20 is fixed to the bushing 11 by a protective case 23, and a stress cone 22 is fitted on the insulator for insulation reinforcement. The other cable termination structure is the same as that of the power application cable, and there is no difference from the configuration generally used conventionally.
【００１２】また、課電用ケーブルを装着しない場合に
は、図のように課電端部Ｂには盲栓４０が嵌め込まれ
る。この盲栓４０の高圧側及び低圧側には、それぞれ電
極板４１，４２が設けられており、その他の部分は絶縁
性のゴム４３から構成される。また、この課電端部Ｂ
は、蓋４６及びボルト４５によって気密に封止される。
蓋４６の裏面と電極板４２の凹部との間にスプリング４
４が挿入され、このスプリング４４が盲栓４０をブッシ
ング１１の課電端部Ｂの内壁面に押し付ける構成とされ
ている。尚、このような状態で、ブッシング１１の中空
部にある電気接続部材１５は弾性復帰部材１６の弾性力
によって右方にスライドし、導体引出し棒１３と内部電
極１４の間を図２に示すように電気接続する。When the power application cable is not attached, a blind plug 40 is fitted to the power application end B as shown in the figure. Electrode plates 41 and 42 are provided on the high-pressure side and the low-pressure side of the blind plug 40, respectively, and the other parts are made of insulating rubber 43. In addition, this charging end B
Is hermetically sealed by a lid 46 and a bolt 45.
A spring 4 is provided between the back surface of the lid 46 and the concave portion of the electrode plate 42.
4 is inserted, and the spring 44 presses the blind plug 40 against the inner wall surface of the power receiving end B of the bushing 11. In this state, the electrical connection member 15 in the hollow portion of the bushing 11 slides to the right by the elastic force of the elastic return member 16, and the space between the conductor extraction rod 13 and the internal electrode 14 is as shown in FIG. Electrical connection.
【００１３】以上の構成の本発明の機器接続用ケーブル
ヘッドは次のようにして使用される。図３に本発明の機
器接続用ケーブルヘッド使用状態における動作説明図を
示す。図３（ａ）はＤＣ耐圧試験の際の動作説明図、図
３（ｂ）は通常の使用状態における動作説明図である。
図において、ケーブル線路２０に対し、課電用ケーブル
３０を用いて直流高電圧を印加し、ＤＣ耐圧試験を行う
場合には、先に図１（ａ）に示したように、課電用ケー
ブル３０を課電用端部Ｂに装着する。また、ケーブル線
路２０を図２に示したように装着する。これによって、
先に説明したように電気接続部材１５の回路が切断さ
れ、図３（ａ）に示すように課電用ケーブル３０からケ
ーブル線路２０に対し直流高電圧が印加される。一方、
導体引出し棒１３に対しては、直流高電圧が遮断され、
機器の内部に直流高電圧が課電されない。The cable head for device connection of the present invention having the above configuration is used as follows. FIG. 3 is an explanatory view of the operation in a state where the cable head for device connection of the present invention is used. FIG. 3A is an operation explanatory diagram at the time of a DC withstand voltage test, and FIG. 3B is an operation explanatory diagram in a normal use state.
In the figure, when a DC high voltage is applied to the cable line 20 using the power application cable 30 to perform a DC withstand voltage test, as shown in FIG. 30 is attached to the power application end B. Further, the cable line 20 is mounted as shown in FIG. by this,
As described above, the circuit of the electric connection member 15 is cut off, and a high DC voltage is applied to the cable line 20 from the power application cable 30 as shown in FIG. on the other hand,
DC high voltage is cut off for the conductor extraction rod 13,
No DC high voltage is applied inside the equipment.
【００１４】一方、ＤＣ耐圧試験終了後は、図２に示し
たような盲栓４０を装着する。これによって、電気接続
部材１５が復帰し、ケーブル線路２０と導体引出し棒１
３とは電気接続部材１５を介して図３（ｂ）に示すよう
に電気接続される。従って、先に図４で説明したような
通常の使用が可能となる。本発明は以上の実施例に限定
されない。上記ケーブル接続端部や課電端部をブッシン
グに設ける場合、その位置や数は任意であってよい。ま
た、導体引出し棒１３や電気接続部材１５の形状等は上
記目的を達成する範囲で自由に変更して差し支えない。On the other hand, after the DC withstand voltage test is completed, a blind plug 40 as shown in FIG. 2 is attached. As a result, the electrical connection member 15 is restored, and the cable line 20 and the conductor lead rod 1 are returned.
3 is electrically connected via the electric connection member 15 as shown in FIG. Therefore, normal use as described above with reference to FIG. 4 becomes possible. The present invention is not limited to the above embodiments. When the cable connection end or the power application end is provided in the bushing, the position and number thereof may be arbitrary. In addition, the shape and the like of the conductor extraction rod 13 and the electric connection member 15 may be freely changed within a range that achieves the above-mentioned object.
【００１５】[0015]
【発明の効果】以上説明した本発明の機器接続用ケーブ
ルヘッドは、ブッシングの内部において導体引出し棒と
ケーブル接続端部間を内部回路を断続的に電気接続する
電気接続部材及び弾性復帰部材を設け、課電用ケーブル
を用いてケーブル線路に試験用電圧を課電中には、課電
用ケーブルにて電気接続部材を弾性復帰部材の弾性力に
抗して移動させ、回路を切断することができるようにし
たので、機器に対し直流高電圧を印加することなくケー
ブル線路の直流耐圧試験を実施することができる。これ
によって、ケーブル線路の直流耐圧試験の際、機器内で
直流高電圧が印加され、機器の内壁等に塵が付着するこ
とを防止できる。The cable head for device connection according to the present invention described above is provided with an electrical connection member and an elastic return member for intermittently electrically connecting the internal circuit between the conductor drawing rod and the cable connection end inside the bushing. During the application of the test voltage to the cable line using the power application cable, the electric connection member may be moved by the power application cable against the elastic force of the elastic return member to cut the circuit. As a result, a DC withstand voltage test of the cable line can be performed without applying a high DC voltage to the device. Thereby, at the time of the DC withstand voltage test of the cable line, it is possible to prevent a high DC voltage from being applied inside the device and to prevent dust from adhering to the inner wall or the like of the device.
【図１】本発明の機器接続用ケーブルヘッドの実施例を
示すもので、（ａ）はその縦断面図、（ｂ）は電気接続
部材の側面図である。1A and 1B show an embodiment of a cable head for device connection according to the present invention, wherein FIG. 1A is a longitudinal sectional view and FIG. 1B is a side view of an electric connection member.
【図２】本発明の機器接続用ケーブルヘッドの通常使用
時における縦断面図である。FIG. 2 is a longitudinal sectional view of the cable head for device connection of the present invention at the time of normal use.
【図３】本発明の機器接続用ケーブルヘッドの動作説明
図である。FIG. 3 is an explanatory view of the operation of the cable head for device connection of the present invention.
【図４】従来一般の機器及びケーブルヘッドの縦断面図
である。FIG. 4 is a longitudinal sectional view of a conventional general device and a cable head.
２ 機器の壁面 １１ ブッシング １３ 導体引出し棒 １４ 内部電極 １５ 電気接続部材 １６ 弾性復帰部材 １７ 絶縁スペーサ ２０ ケーブル線路 ３０ 課電用ケーブル ３６ プラグ Ａ ケーブル接続端部 Ｂ 課電端部 2 Device wall 11 Bushing 13 Conductor lead-out rod 14 Internal electrode 15 Electrical connection member 16 Elastic return member 17 Insulation spacer 20 Cable line 30 Power supply cable 36 Plug A Cable connection end B Power reception end
フロントページの続き (72)発明者 佐藤 浩正 神奈川県川崎市川崎区小田栄２丁目１番 １号 昭和電線電纜株式会社内 (56)参考文献 特開 昭55−144717（ＪＰ，Ａ) 特開 平４−347520（ＪＰ，Ａ) 特開 平４−347521（ＪＰ，Ａ) 特開 平５−191916（ＪＰ，Ａ) 実開 昭59−117119（ＪＰ，Ｕ) 実開 平２−49320（ＪＰ，Ｕ) 特公 昭55−31684（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) H02G 15/00 - 15/196 Continuation of the front page (72) Inventor Hiromasa Sato 2-1-1 Oda Sakae, Kawasaki-ku, Kawasaki-shi, Kanagawa Prefecture Inside Showa Electric Wire & Cable Co., Ltd. (56) References JP-A-55-144717 (JP, A) JP-A-4-347520 (JP, A) JP-A-4-347521 (JP, A) JP-A-5-191916 (JP, A) JP-A-59-117119 (JP, U) JP-A-2-49320 (JP, A) U) JP-B-55-31684 (JP, B2) (58) Field surveyed (Int. Cl. 6 , DB name) H02G 15/00-15/196
Claims (1)
端を受け入れるためのケーブル接続端部と、 前記ケーブル線路に試験用電圧を課電する課電用ケーブ
ルの終端を受け入れるための課電端部と、 前記ケーブル接続端部と前記課電端部とを電気接続する
内部電極と、 前記機器の内部回路と電気接続される導体引き出し棒
と、 前記導体引き出し棒と前記内部電極との間に設けられた
中空部に移動可能に嵌め込まれ電気接続部材と、 前記ケーブル接続端部と前記課電端部と前記内部電極と
前記導体引き出し棒と前記電気接続部材とを収容して、
前記機器の壁面に取り付けられるブッシングと、 前記課電用ケーブルを前記課電端部に装着したとき前記
電気接続部材の移動とともに押されて、前記電気接続部
材が前記導体引き出し棒と前記内部電極との間の電気接
続を遮断する状態にし、前記課電用ケーブルを前記課電
端部に装着しないとき前記電気接続部材が前記導体引き
出し棒と前記内部電極との間を電気接続する状態に復帰
させる弾性復帰部材と、 を備えたことを特徴とする機器接続用ケーブルヘッド。 An end of a cable line electrically connected to equipment.
A cable connection end for receiving the end, and a power supply cable for applying a test voltage to the cable line
Power receiving end for receiving the end of the cable, and electrically connecting the cable connection end and the power receiving end
An internal electrode and a conductor extraction rod electrically connected to an internal circuit of the device
And provided between the conductor extraction rod and the internal electrode.
An electrical connection member movably fitted into the hollow portion, the cable connection end, the power application end, and the internal electrode;
Accommodating the conductor drawer bar and the electrical connection member,
A bushing attached to a wall surface of the device, and the power application cable attached to the power application end;
The electric connection part is pushed with the movement of the electric connection member,
The material is an electrical connection between the conductor extraction rod and the internal electrode.
And disconnect the power supply cable from the power supply cable.
When not attached to the end, the electrical connection member
Returns to the state of electrical connection between the rod and the internal electrode
And a resilient return member for causing the device to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35948991A JP2918376B2 (en) | 1991-12-27 | 1991-12-27 | Cable head for device connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35948991A JP2918376B2 (en) | 1991-12-27 | 1991-12-27 | Cable head for device connection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05184044A JPH05184044A (en) | 1993-07-23 |
| JP2918376B2 true JP2918376B2 (en) | 1999-07-12 |
Family
ID=18464768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35948991A Expired - Lifetime JP2918376B2 (en) | 1991-12-27 | 1991-12-27 | Cable head for device connection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2918376B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856873B (en) * | 2011-06-30 | 2015-07-08 | 泰科电子(上海)有限公司 | Stress cone component and high-voltage cable connector component |
-
1991
- 1991-12-27 JP JP35948991A patent/JP2918376B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05184044A (en) | 1993-07-23 |
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