JPH0676665A - Gas bushing - Google Patents
Gas bushingInfo
- Publication number
- JPH0676665A JPH0676665A JP22877392A JP22877392A JPH0676665A JP H0676665 A JPH0676665 A JP H0676665A JP 22877392 A JP22877392 A JP 22877392A JP 22877392 A JP22877392 A JP 22877392A JP H0676665 A JPH0676665 A JP H0676665A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- cylindrical metal
- intermediate electrode
- fixing cylindrical
- metal member
- 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.)
- Granted
Links
- 239000002184 metal Substances 0.000 claims abstract description 39
- 239000012212 insulator Substances 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052573 porcelain Inorganic materials 0.000 description 12
- 239000004020 conductor Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、内部に絶縁性ガスを封
入したガスブッシングの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas bushing structure in which an insulating gas is sealed.
【０００２】[0002]
【従来の技術】ガスブッシングは、図４に示されるよう
にバンド金具21上に立設された碍管22の内部に中心導体
23を貫通させるとともに、碍管の内部にSF6 ガスのよう
な絶縁性ガスを封入したものであるが、高電圧を中心導
体23に印加すると碍管22の下端部付近の電位傾度が極め
て大きくなる。このために電位傾度の緩和を目的とし
て、バンド金具21の内側に接地シールド電極24を取り付
けるとともに、その更に内側に中間電極25を取り付け、
更に気中側にも気中部接地シールド26を取り付けたもの
が普通であった。2. Description of the Related Art As shown in FIG. 4, a gas bushing has a center conductor inside a porcelain insulator 22 erected on a band fitting 21.
Although an insulating gas such as SF 6 gas is sealed inside the porcelain tube while penetrating the porcelain 23, when a high voltage is applied to the center conductor 23, the potential gradient in the vicinity of the lower end of the porcelain tube 22 becomes extremely large. Therefore, for the purpose of relaxing the potential gradient, the ground shield electrode 24 is attached to the inside of the band fitting 21, and the intermediate electrode 25 is attached to the inside.
Further, it was common to attach the aerial part grounding shield 26 also to the aerial side.
【０００３】このような構造の従来のガスブッシングで
は、図示のように接地シールド電極24の上下に円筒状絶
縁物27を介して中間電極25が取り付けられているが、こ
の接地シールド電極24は薄肉金属板からなるものであっ
て機械的強度が小さいものであるため、輸送中の振動、
取付け時の振動、使用中の振動等によって接地シールド
電極24および中間電極25の位置がずれたり変形し易かっ
た。このために、碍子沿面電位の分布等が変化してしま
い、所期の耐電圧特性が得られないことがあった。In the conventional gas bushing having such a structure, the intermediate electrodes 25 are attached above and below the ground shield electrode 24 via the cylindrical insulator 27 as shown in the figure. The ground shield electrode 24 is thin. Since it consists of a metal plate and has a low mechanical strength, vibration during transportation,
The positions of the ground shield electrode 24 and the intermediate electrode 25 were easily displaced or deformed due to vibration during mounting, vibration during use, and the like. For this reason, the distribution of the creeping potential of the insulator changes, and the desired withstand voltage characteristics may not be obtained.
【０００４】更にこの円筒状絶縁物27は、接地シールド
電極24の上下端部の電界が集中し易い部分に設けられて
いたため、使用中に絶縁劣化するおそれがあった。更に
このような構造のものは、現場においてバンド金具21の
内部でこれらの各部品を組み立てる作業も容易ではない
うえ、電界の調整を行うには、接地シールド電極24、中
間電極25、円筒状連結金具27等をすべて外したうえ、そ
れぞれ形状の異なったものと交換して再組み立てを行わ
ねばならず、作業が極めて困難であるという問題があっ
た。Further, since the cylindrical insulator 27 is provided at the upper and lower end portions of the ground shield electrode 24 where the electric field is likely to be concentrated, there is a possibility that the insulation may deteriorate during use. Further, in the case of such a structure, it is not easy to assemble each of these parts inside the band metal fitting 21 in the field, and in order to adjust the electric field, the ground shield electrode 24, the intermediate electrode 25, and the cylindrical connection. There is a problem that the work is extremely difficult because it is necessary to remove all the metal fittings 27 and the like, replace them with different shapes, and reassemble them.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記した従来
の問題点を解決して、振動による中間電極の位置ずれや
変形を防止することができ、また現場における組立が容
易であるうえ、電界の調整作業も従来よりも容易に行う
ことができる耐電圧特性に優れたガスブッシングを提供
するためになされたものである。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art to prevent displacement and deformation of the intermediate electrode due to vibration, facilitates on-site assembly, and provides electric field. The adjustment work is also performed in order to provide a gas bushing having an excellent withstand voltage characteristic, which can be more easily performed than before.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明は、バンド金具部の内側に機械的強
度の大きいシールド固定用円筒金具を取付け、このシー
ルド固定用円筒金具の上下端部に接地シールド電極を固
定するとともに、シールド固定用円筒金具の内面に複数
個の柱状絶縁物を介して中間電極を固定したことを特徴
とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a shield fixing cylindrical metal fitting having a large mechanical strength is attached to the inside of a band fitting, and the shield fixing cylindrical fitting is placed above and below. It is characterized in that the ground shield electrode is fixed to the end portion, and the intermediate electrode is fixed to the inner surface of the shield fixing cylindrical metal member through a plurality of columnar insulators.
【０００７】[0007]
【実施例】以下に本発明を図示の実施例によって更に詳
細に説明する。図１において、１は内部にSF6 ガスのよ
うな絶縁性ガスを封入した磁器製の碍管であり、その下
端部はフランジ金具２によってバンド金具３の上部に固
定されている。４は碍管１の上部端子金具５に上端を支
持された中心導体である。The present invention will be described below in more detail with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 is a porcelain porcelain porcelain tube in which an insulating gas such as SF 6 gas is sealed, the lower end of which is fixed to an upper portion of a band metal fitting 3 by a flange metal fitting 2. Reference numeral 4 denotes a central conductor whose upper end is supported by the upper terminal fitting 5 of the porcelain bushing 1.
【０００８】バンド金具３の内側には、例えばステンレ
ススチール製としたり、肉厚を厚くしたり、補強リブを
付けたりして機械的強度の大きい構造としたシールド固
定用円筒金具６が、その外周のフランジ７を利用してボ
ルト止めされている。図２に示されるように、実施例で
はこのシールド固定用円筒金具６は周方向に複数に分割
されているが、これによる利点は後述する。このシール
ド固定用円筒金具６の上下端部に、薄肉金属からなる接
地シールド電極８、９が固定されている。またシールド
固定用円筒金具６の内面に、碍子沿面電位傾度を粗にす
るための中間電極10が固定されている。この中間電極10
は接地シールド電極８、９よりも軸方向の長さが大きく
されている。Inside the band metal fitting 3, there is provided a shield fixing cylindrical metal fitting 6 which is made of, for example, stainless steel, has a thick wall, or is provided with a reinforcing rib so as to have a large mechanical strength. It is bolted using the flange 7 of. As shown in FIG. 2, in the embodiment, the shield fixing cylindrical metal member 6 is divided into a plurality of pieces in the circumferential direction, and the advantage of this will be described later. Ground shield electrodes 8 and 9 made of thin metal are fixed to the upper and lower ends of the shield fixing cylindrical metal member 6. Further, an intermediate electrode 10 for roughening the insulator surface potential gradient is fixed to the inner surface of the shield fixing cylindrical metal member 6. This intermediate electrode 10
Is longer than the ground shield electrodes 8 and 9 in the axial direction.
【０００９】中間電極10は、図３に拡大して示したよう
な複数個の柱状絶縁物11を介して、シールド固定用円筒
金具６の内面に取り付けられている。この柱状絶縁物11
により、接地シールド電極８、９と中間電極10との間を
絶縁することができる。また複数個の柱状絶縁物11を使
用して中間電極10を機械的強度に優れたシールド固定用
円筒金具６に取り付けることにより、ブッシング取付け
機器による振動、自身による振動、輸送中の振動等を受
けても、接地シールド電極８、９や中間電極10が変形し
たり疲労破壊することが防止され、また中間電極10の位
置が変化することによる碍管沿面電位分布の変化を防止
することができる。The intermediate electrode 10 is attached to the inner surface of the shield fixing cylindrical metal member 6 via a plurality of columnar insulators 11 as shown in an enlarged view in FIG. This columnar insulator 11
Thus, the ground shield electrodes 8 and 9 and the intermediate electrode 10 can be insulated from each other. Further, by mounting the intermediate electrode 10 on the shield fixing cylindrical metal fitting 6 having excellent mechanical strength by using a plurality of columnar insulators 11, vibrations due to the bushing mounting device, vibrations by itself, vibrations during transportation, etc. are received. However, it is possible to prevent the ground shield electrodes 8 and 9 and the intermediate electrode 10 from being deformed or fatigue-damaged, and to prevent changes in the porcelain tube creeping potential distribution due to changes in the position of the intermediate electrode 10.
【００１０】なお、12はフランジ金具２の外側に取り付
けられた気中部接地シールド、13はシールド固定用円筒
金具６から引き出された絶縁リード線である。この絶縁
リード線13はブッシングの課電電圧や内部放電を測定す
るためのもので、バンド金具３を貫通させて設けられた
測定端子14に接続されており、これに内蔵させた分圧コ
ンデンサ15を介して電圧測定器や部分放電測定器と接続
できるようになっている。Reference numeral 12 is an aerial grounding shield attached to the outside of the flange fitting 2, and 13 is an insulating lead wire pulled out from the shield fixing cylindrical fitting 6. The insulated lead wire 13 is for measuring the voltage applied to the bushing and the internal discharge, and is connected to the measurement terminal 14 provided through the band metal fitting 3 and has a voltage dividing capacitor 15 incorporated therein. It can be connected to a voltage measuring instrument or a partial discharge measuring instrument via the.
【００１１】[0011]
【作用】このように構成された本発明のガスブッシング
は、電気機器のブッシング取付け口16に取り付けて使用
されるものであり、接地シールド電極８、９や中間電極
10の位置を調整することにより、ガス中部の電位傾度、
気中部接地シールド12の表面電位傾度、碍管沿面電位傾
度等を調整して、ブッシングの耐電圧特性の向上を図れ
ることは従来のものと基本的に同一である。The gas bushing of the present invention thus constructed is used by being attached to the bushing attachment port 16 of an electric device, and is used for the ground shield electrodes 8 and 9 and the intermediate electrode.
By adjusting the position of 10, the potential gradient of the middle part of the gas,
It is basically the same as the conventional one that the withstand voltage characteristic of the bushing can be improved by adjusting the surface potential gradient of the aerial part grounding shield 12, the porcelain tube creeping potential gradient and the like.
【００１２】しかし本発明においては、機械的強度の大
きいシールド固定用円筒金具６の上下端部に接地シール
ド電極８、９を取り付けたので、図４に示した従来の構
造のものとは異なり、これらの接地シールド電極８、９
の軸方向長さや径寸法等を自由に変化させることができ
る。このため、中間電極10と接地シールド電極８、９間
の静電容量を容易に変化させることができ、きわめて容
易に碍管沿面電位分布の最適化を図ることができる。However, in the present invention, since the ground shield electrodes 8 and 9 are attached to the upper and lower ends of the shield-fixing cylindrical metal member 6 having a large mechanical strength, unlike the conventional structure shown in FIG. These ground shield electrodes 8, 9
It is possible to freely change the axial length, the diameter, and the like of the. For this reason, the electrostatic capacitance between the intermediate electrode 10 and the ground shield electrodes 8 and 9 can be easily changed, and the porcelain tube creeping potential distribution can be optimized very easily.
【００１３】また本発明では、機械的強度の大きいシー
ルド固定用円筒金具６の内面に複数個の柱状絶縁物11を
介して中間電極10を固定したので、上記したように振動
を受けても中間電極10が変形したり疲労破壊することが
なく、中間電極10の変位による碍管沿面電位分布の変化
をなくすることができる。しかも柱状絶縁物11は電位傾
度の小さい部分に取り付けられているため、その絶縁劣
化を防止することができる。Further, in the present invention, since the intermediate electrode 10 is fixed to the inner surface of the shield-fixing cylindrical metal fitting 6 having a large mechanical strength via the plurality of columnar insulators 11, the intermediate electrode 10 is not affected by the vibration as described above. The electrode 10 is not deformed or fatigue-damaged, and it is possible to eliminate the change in the surface potential distribution of the porcelain tube due to the displacement of the intermediate electrode 10. Moreover, since the columnar insulator 11 is attached to a portion having a small potential gradient, the insulation deterioration can be prevented.
【００１４】なお図示の実施例では、前記のとおりシー
ルド固定用円筒金具６が周方向に複数に分割されてい
る。これは、このシールド固定用円筒金具６を一体型と
した場合には、中間電極10、接地シールド電極８、９、
柱状絶縁物11、シールド固定用円筒金具６等の製作誤差
によって組立後に相互間に微細な隙間が発生するおそれ
があり、特に中間電極10と柱状絶縁物11との間において
局部的な電界集中が発生するおそれがあることをなくす
るためのものである。実施例のようにシールド固定用円
筒金具６を分割しておけば、製作誤差があっても上記の
ような隙間を発生させることなく組付けが可能となる。In the illustrated embodiment, as described above, the shield fixing cylindrical metal member 6 is divided into a plurality of pieces in the circumferential direction. This is because when the shield fixing cylindrical metal member 6 is integrated, the intermediate electrode 10, the ground shield electrodes 8 and 9,
There is a possibility that a fine gap may be generated between the columnar insulator 11 and the shield fixing cylindrical metal member 6 after assembly due to a manufacturing error. In particular, local electric field concentration may occur between the intermediate electrode 10 and the columnar insulator 11. This is to eliminate the possibility of occurrence. If the shield fixing cylindrical metal member 6 is divided as in the embodiment, even if there is a manufacturing error, the assembly can be performed without generating the above-mentioned gap.
【００１５】本発明のガスブッシングは、シールド固定
用円筒金具６、接地シールド電極８、９、中間電極10、
柱状絶縁物11等の各部品を外部において予め組立ててお
き、これをバンド金具３の内部に組付けることによって
組み立てられる。従来のようにバンド金具３の内部でこ
れらの部品を順次組み立てる方法を採ると、工具のスペ
ースが少なく作業が行いにくいという問題や、ボルト等
の落下による電気機器の損傷等の問題が発生するおそれ
がある。しかしこれらの部品を外部で予め組み立ててお
けばこれらの問題が解決できるのみならず、バンド金具
３内へ組付ける前に十分な清掃を行うこともできる。し
かもこの方法を採れば中間電極10と接地シールド電極
８、９との位置決めが容易となり、中間電極10と中心導
体４との位置決めも、フランジ７の位置をずらすことに
よって容易に行うことができるので、電位傾度の調整も
容易に行えることとなる。The gas bushing of the present invention comprises a cylindrical metal member 6 for fixing a shield, ground shield electrodes 8 and 9, an intermediate electrode 10,
It is assembled by preliminarily assembling each component such as the columnar insulator 11 outside and then assembling it inside the band metal fitting 3. If the conventional method of sequentially assembling these parts inside the band metal fitting 3 is adopted, there is a possibility that a work space is small and it is difficult to carry out the work, and a problem such as damage to an electric device due to a drop of a bolt or the like occurs. There is. However, if these parts are pre-assembled externally, not only these problems can be solved, but also sufficient cleaning can be performed before assembling into the band fitting 3. Moreover, if this method is adopted, the positioning of the intermediate electrode 10 and the ground shield electrodes 8 and 9 becomes easy, and the positioning of the intermediate electrode 10 and the center conductor 4 can also be performed easily by shifting the position of the flange 7. Therefore, the potential gradient can be easily adjusted.
【００１６】更に本実施例のように測定端子14の内部に
分圧コンデンサ15を内蔵させておけば、測定端子14に電
圧測定器や部分放電測定器を接続するだけでブッシング
の課電電圧や内部放電を外部から容易に測定することが
可能であり、その運転状況を監視するうえで好都合であ
る。また従来のように分圧コンデンサ15をバンド金具の
内部に収納したものに比較して、分圧コンデンサ15の点
検や交換も容易に行うことができる利点がある。Further, if the voltage dividing capacitor 15 is built in the measuring terminal 14 as in this embodiment, the voltage applied to the bushing and the partial discharge measuring device can be simply connected to the measuring terminal 14. The internal discharge can be easily measured from the outside, which is convenient for monitoring the operating condition. Further, as compared with the conventional one in which the voltage dividing capacitor 15 is housed inside the band fitting, there is an advantage that the voltage dividing capacitor 15 can be easily inspected and replaced.
【００１７】[0017]
【発明の効果】以上に説明したように、本発明のガスブ
ッシングは機械的強度の大きいシールド固定用円筒金具
の内面に複数個の柱状絶縁物を介して中間電極を固定し
たことにより、振動による中間電極の位置ずれや変形を
防止することができるとともに、柱状絶縁物の絶縁劣化
を防止することができる。また本発明のガスブッシング
はシールド固定用円筒金具の上下端部に接地シールド電
極を固定したので、電位傾度の調整作業も従来よりも容
易に行うことができる。更にこれらの部分を予め外部で
組み立てておくことにより、組付け作業を容易化するこ
ともできる。よって本発明は従来の問題点を解消したガ
スブッシングとして、産業の発展に寄与するところはき
わめて大きいものである。As described above, according to the gas bushing of the present invention, the intermediate electrode is fixed to the inner surface of the shield fixing cylindrical metal member having a large mechanical strength through the plurality of columnar insulators. It is possible to prevent displacement and deformation of the intermediate electrode and prevent insulation deterioration of the columnar insulator. Further, in the gas bushing of the present invention, since the ground shield electrodes are fixed to the upper and lower ends of the shield fixing cylindrical metal fitting, the work of adjusting the potential gradient can be performed more easily than before. Further, by assembling these parts outside in advance, the assembling work can be facilitated. Therefore, the present invention contributes greatly to industrial development as a gas bushing that solves the conventional problems.
【図１】本発明の実施例を示す中央縦断面図である。FIG. 1 is a central longitudinal sectional view showing an embodiment of the present invention.
【図２】本発明の実施例を示す水平断面図である。FIG. 2 is a horizontal sectional view showing an embodiment of the present invention.
【図３】柱状絶縁物の部分の拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a columnar insulator portion.
【図４】従来例を示す中央縦断面図である。FIG. 4 is a central longitudinal sectional view showing a conventional example.
１ 碍子 ３ バンド金具 ６ シールド固定用円筒金具 ８ 接地シールド電極 ９ 接地シールド電極 10 中間電極 11 柱状絶縁物 13 絶縁リード線 14 測定端子 15 分圧コンデンサ 1 Insulator 3 Band metal fitting 6 Cylindrical metal fitting for shield 8 Ground shield electrode 9 Ground shield electrode 10 Intermediate electrode 11 Columnar insulator 13 Insulation lead wire 14 Measuring terminal 15 Voltage dividing capacitor
Claims (4)
いシールド固定用円筒金具を取付け、このシールド固定
用円筒金具の上下端部に接地シールド電極を固定すると
ともに、シールド固定用円筒金具の内面に複数個の柱状
絶縁物を介して中間電極を固定したことを特徴とするガ
スブッシング。1. A shield-fixing cylindrical metal fitting having high mechanical strength is attached to the inside of the band fitting, the ground shield electrodes are fixed to the upper and lower ends of the shield-fixing cylindrical fitting, and the inner surface of the shield-fixing cylindrical fitting is fixed. A gas bushing characterized in that an intermediate electrode is fixed to the intermediate electrode via a plurality of columnar insulators.
ド電極と、中間電極とがブッシング外部で一体に組み立
てられたものである請求項１記載のガスブッシング。2. The gas bushing according to claim 1, wherein the shield fixing cylindrical metal member, the ground shield electrode, and the intermediate electrode are integrally assembled outside the bushing.
とした請求項１記載のガスブッシング。3. The gas bushing according to claim 1, wherein the shield fixing cylindrical metal member has a plurality of divided structures.
絶縁して固定されており、シールド固定用円筒金具から
引き出された絶縁リード線を分圧コンデンサを内蔵させ
た測定端子に接続した請求項１記載のガスブッシング。4. The shield fixing cylindrical metal member is fixed by being insulated from the band metal member, and the insulating lead wire pulled out from the shield fixing cylindrical metal member is connected to a measuring terminal having a built-in voltage dividing capacitor. Gas bushing described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4228773A JP2655787B2 (en) | 1992-08-27 | 1992-08-27 | Gas bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4228773A JP2655787B2 (en) | 1992-08-27 | 1992-08-27 | Gas bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0676665A true JPH0676665A (en) | 1994-03-18 |
| JP2655787B2 JP2655787B2 (en) | 1997-09-24 |
Family
ID=16881621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4228773A Expired - Fee Related JP2655787B2 (en) | 1992-08-27 | 1992-08-27 | Gas bushing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2655787B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6424871B1 (en) | 1996-10-31 | 2002-07-23 | Ebara Corporation | Rotating machine integrated with controller, and inverter |
| US6435836B1 (en) | 1998-02-09 | 2002-08-20 | Ebara Corporation | Fluid machinery |
| CN104505236A (en) * | 2014-12-18 | 2015-04-08 | 西安交通大学 | Shielding case at tail of condenser bushing on +/-400kV converter transformer valve side |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101473111B1 (en) * | 2013-09-16 | 2014-12-15 | (주)시티이텍 | Bushing for metering out fit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116216A (en) * | 1980-02-16 | 1981-09-11 | Mitsubishi Electric Corp | Gas bushing |
| JPS598005A (en) * | 1982-07-06 | 1984-01-17 | Nec Corp | Multiplexing device |
| JPS59155510A (en) * | 1983-02-15 | 1984-09-04 | アセア スタル アクチ−ボラグ | Flow controller |
| JPH0225275U (en) * | 1988-08-05 | 1990-02-20 |
-
1992
- 1992-08-27 JP JP4228773A patent/JP2655787B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116216A (en) * | 1980-02-16 | 1981-09-11 | Mitsubishi Electric Corp | Gas bushing |
| JPS598005A (en) * | 1982-07-06 | 1984-01-17 | Nec Corp | Multiplexing device |
| JPS59155510A (en) * | 1983-02-15 | 1984-09-04 | アセア スタル アクチ−ボラグ | Flow controller |
| JPH0225275U (en) * | 1988-08-05 | 1990-02-20 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6424871B1 (en) | 1996-10-31 | 2002-07-23 | Ebara Corporation | Rotating machine integrated with controller, and inverter |
| US6435836B1 (en) | 1998-02-09 | 2002-08-20 | Ebara Corporation | Fluid machinery |
| CN104505236A (en) * | 2014-12-18 | 2015-04-08 | 西安交通大学 | Shielding case at tail of condenser bushing on +/-400kV converter transformer valve side |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2655787B2 (en) | 1997-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0510311B1 (en) | Current and voltage transformer for a metal encapsulated, gas insulated high-voltage installation | |
| JPH034110B2 (en) | ||
| EP2057644B1 (en) | High voltage bushing | |
| JP5330192B2 (en) | Gas insulated electrical equipment | |
| JP2655787B2 (en) | Gas bushing | |
| US4159401A (en) | Gas filled bushings with potential shields | |
| US9218900B2 (en) | High voltage bushing with reinforced conductor | |
| JPH04138376A (en) | Capasitive sensor for potential measuring circuit of line conductor | |
| JPS6233708B2 (en) | ||
| JPH0625953Y2 (en) | Gas insulated capacitor | |
| JPH05326303A (en) | Gas insulated current transformer | |
| RU2050610C1 (en) | High-voltage current transformer | |
| RU2063107C1 (en) | Partitioned insulating column of high-voltage accelerator | |
| JPS5924482B2 (en) | butsing | |
| JPH11288629A (en) | Bushing | |
| JP2003180007A (en) | Gas insulation equipment | |
| JPS621699Y2 (en) | ||
| JPS6341695Y2 (en) | ||
| JP4005982B2 (en) | Gas insulated vacuum circuit breaker | |
| WO2012160625A1 (en) | Transformer for instruments | |
| WO2025094285A1 (en) | Capacitive instrument transformer | |
| JPS598007B2 (en) | gas butsing | |
| JPS6041619Y2 (en) | butsing | |
| JPS62189910A (en) | Insulating spacer | |
| WO2023084059A1 (en) | Gas insulation system and insulator assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19970509 |
|
| LAPS | Cancellation because of no payment of annual fees |