JPH02266806A - Compressed-gas-insulated switchgear - Google Patents
Compressed-gas-insulated switchgearInfo
- Publication number
- JPH02266806A JPH02266806A JP1084055A JP8405589A JPH02266806A JP H02266806 A JPH02266806 A JP H02266806A JP 1084055 A JP1084055 A JP 1084055A JP 8405589 A JP8405589 A JP 8405589A JP H02266806 A JPH02266806 A JP H02266806A
- Authority
- JP
- Japan
- Prior art keywords
- container
- disconnector
- circuit breaker
- wire terminal
- main bus
- 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
- 125000006850 spacer group Chemical group 0.000 claims abstract description 21
- 239000004020 conductor Substances 0.000 abstract description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 4
- 239000000428 dust Substances 0.000 description 8
- 238000007689 inspection Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
(産業上の利用分野)
本発明は、金属カプセルで被覆して高圧ガスで絶縁し、
単相あるいは多相の高圧開閉装置であ、って、高圧開閉
器およびその他の通電部材を受容するためのガス密に区
画した相互に隣接する圧力容器を備えたガス絶縁開閉装
置に関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a metal capsule coated with a high pressure gas and insulated with a high pressure gas.
TECHNICAL FIELD The present invention relates to a single-phase or multi-phase high-voltage switchgear, which gas-insulated switchgear is provided with mutually adjacent pressure vessels separated in a gas-tight manner for receiving a high-voltage switch and other current-carrying members.
(従来の技術)
大都市周辺とか臨海地区に設置される変電所或いは開閉
所においては、用地の入手璽とか塩害対策等の理由で、
変電所とか開閉所を構成する電気機器をSF、ガス等の
絶縁性及び消弧性に非常に優れた絶縁媒体で密封して構
成したガス絶縁開閉装置が使用されている。そして、こ
の種のガス絶縁開閉装置は、しゃ断器或いは断路器その
他の所要機器を同一のタンク内に収納して複合化し、敷
地面積の大幅な縮小を図る様にしいる。また、大都市近
郊の変電所は、地価の上昇等の理由から、屋内あるいは
地下に設けられることが多い。この様な事情から、三相
分のしゃ断器及び内装変流器等を一つのタンク内に収納
した三相−括複合形ガス絶縁電気機器が実用化され、ガ
ス絶縁変電所の縮小化に役立てられている。(Prior art) In substations and switchyards installed around large cities or coastal areas, for reasons such as land acquisition and salt damage countermeasures,
Gas-insulated switchgear is used in which electrical equipment constituting a substation or switchyard is sealed with an insulating medium such as SF or gas that has excellent insulation and arc-extinguishing properties. In this type of gas insulated switchgear, circuit breakers, disconnectors, and other necessary equipment are housed in the same tank, making them complex, thereby significantly reducing the site area. Further, substations near large cities are often installed indoors or underground due to reasons such as rising land prices. Under these circumstances, three-phase combined gas-insulated electrical equipment that houses three-phase circuit breakers, internal current transformers, etc. in one tank has been put into practical use, and is useful for downsizing gas-insulated substations. It is being
このような従来のガス絶縁開閉装置の構成は。What is the configuration of such a conventional gas insulated switchgear?
特開昭54−86738号公報で知られている。すなわ
ち遮断器の容器が水平方向に配置され、この容器内に遮
断部、変流器、接地装置および通電導体などを収納して
構成し、この遮断器容器の上部の口出端子容器に主母線
および断路器を有する容器を絶縁スペーサを介して取り
つけられ、また遮断器容器の側面にケーブルヘッド容器
を絶縁スペーサを介して連結するとともに、このケーブ
ルヘッド容器の上部に計器用変圧器容器を絶縁スペーサ
を介して取りつける構造になっている。It is known from Japanese Patent Application Laid-Open No. 54-86738. In other words, the breaker container is arranged horizontally, and the breaker, current transformer, grounding device, current-carrying conductor, etc. are housed in this container, and the main bus is connected to the outlet terminal container at the top of the breaker container. A container with a disconnector and a disconnector is attached via an insulating spacer, and a cable head container is connected to the side of the breaker container via an insulating spacer, and a voltage transformer container is attached to the top of the cable head container via an insulating spacer. The structure is such that it can be attached via the
このように構成したガス絶縁開閉装置は、複合化によっ
て小形化が図られている。しかしながら、このような構
成においては、遮断器の上方の2つの口出端子容器およ
び計器用変圧器容器の絶縁スペーサの方向が水平になっ
ている。したがって、主母線と一体にされている断路器
の組立中に発生したゴミおよび断路器の操作により発生
する針状ゴミがすべて絶縁スペーサに落下し、その耐絶
縁性能を著しく低下せる傾向にある。同様に計器用変圧
器容器を区分している絶縁スペーサも水平方向なので、
同じようなことが云える。The gas insulated switchgear configured in this manner is intended to be made smaller by combining the devices. However, in such a configuration, the two outlet terminal containers and the insulating spacers of the potential transformer container above the circuit breaker are oriented horizontally. Therefore, all of the dust generated during the assembly of the disconnector integrated with the main bus bar and the needle-shaped dust generated by the operation of the disconnector fall onto the insulating spacer, which tends to significantly reduce its insulation performance. Similarly, the insulating spacers that separate the instrument transformer case are also horizontal, so
The same thing can be said.
さらに口出端子容器に直結される母線側断路器の点検取
外しなどの作業時には、遮断器容器の垂直方向につり上
げるため1点検スペースを高さ方向に大きくとる必要が
あり、また屋内および地下に設ける時には、建家などの
建設費が増大するという欠点がある。Furthermore, when inspecting and removing the busbar-side disconnector that is directly connected to the outlet terminal container, it is necessary to provide a large inspection space in the height direction in order to lift the circuit breaker container vertically. Sometimes, the disadvantage is that the cost of constructing a house, etc. increases.
(発明が解決しようとする課題)
このように従来の多重母線方式のガス絶縁開閉装置にお
いては、74%形化、縮少化を図るために2つの口出端
子容器の絶縁スペーサを水平方向に向けてこの口出端子
部にそれぞれの断路器を接続する構造なために、絶縁ス
ペーサの表面にゴミなどが落下して付着することから、
耐絶縁性能が悪く、しいては絶縁スペーサを大きくする
必要があった6本発明の目的は、遮断器の接続を改良す
ることにより、容器の小さな遮断器を有する作業性に優
れた多重母線方式のガス絶縁開閉装置を提供するもので
ある。(Problem to be Solved by the Invention) In this way, in the conventional multi-bus type gas insulated switchgear, in order to achieve a 74% shape and reduction in size, the insulating spacers of the two outlet terminal containers are moved horizontally. Because each disconnector is connected to this outlet terminal toward the outside, dust and other substances may fall and adhere to the surface of the insulating spacer.
The insulation performance was poor, and the insulating spacer had to be made larger6.The purpose of the present invention is to improve the connection of the circuit breaker, thereby creating a multi-bus system that has excellent workability and has a circuit breaker with a small container. gas insulated switchgear.
(課題を解決するための手段)
本発明のガス絶縁開閉装置は、主母線に接続する複数の
口出し端子部に接続する絶縁スペーサを垂直に配置し1
分岐母線と接地装置を遮断器容器より分離し、分岐母線
と接地装置を納入した容器の水平方向の両側に母線遮路
器を設け、遮断器ユニットの中に遮断部と遮断部の両側
に変流器を入れるスペースを設けたことを特徴としてい
る6(作 用)
本発明においては、すべての絶縁スペーサに組立中に発
生したゴミ及び断路器の操作により、発生する針状ゴミ
などがたまることがないため、高品質の耐絶縁性能を保
つことができるとともに、母線と一体となった断路器を
水平方向に引出せるために、点検スペースを高さ方向に
とる必要がなく、点検スペースの縮小を図ることができ
る。(Means for Solving the Problems) A gas insulated switchgear according to the present invention vertically arranges insulating spacers connected to a plurality of lead terminals connected to a main bus bar.
The branch busbar and grounding device are separated from the circuit breaker container, busbar circuit breakers are installed on both horizontal sides of the container in which the branch busbar and grounding device are delivered, and the circuit breakers are placed inside the circuit breaker unit on both sides of the disconnection section and the disconnection section. 6 (Function) In the present invention, all insulating spacers are free from accumulation of dust generated during assembly and needle-shaped dust generated by disconnector operation. Because there are no holes, it is possible to maintain high-quality insulation performance, and because the disconnector integrated with the bus bar can be pulled out horizontally, there is no need to take up inspection space in the height direction, reducing inspection space. can be achieved.
(実施例)
以下、本発明を第1図、第2図、第3図および第4図を
参照して説明する。まず第1図において。(Example) The present invention will be described below with reference to FIGS. 1, 2, 3, and 4. First, in Figure 1.
遮断器31は、SF、ガス等の絶縁ガスを充填した容器
32内に遮断部33を容器軸方向に収納し、容器軸を水
平に配置して左方の端部に遮断器33の操作装置34を
搭載し、補助べ一人35を介して容器32を固定してい
る。この容器32には2つの口出し端子部32a、 3
2bを設けている。1つの口出し端子部32aは、容器
32の操作装置34の近傍に垂直方向に設け、もう1つ
の口出し端子部32bは、容器32の軸のほぼ中央に設
けている。The circuit breaker 31 has a circuit breaker 33 housed in a container 32 filled with an insulating gas such as SF or gas in the axial direction of the container, with the container shaft arranged horizontally, and an operating device for the circuit breaker 33 at the left end. 34 is mounted, and the container 32 is fixed via an auxiliary bench 35. This container 32 has two outlet terminal parts 32a, 3.
2b is provided. One outlet terminal portion 32a is provided vertically near the operating device 34 of the container 32, and the other outlet terminal portion 32b is provided approximately at the center of the axis of the container 32.
遮断部33の右方には容器32軸にほぼ平行に口出し端
子部32bへ向かって引出される通電導体36aを接続
する。通電導体36aは端子部32b近傍で分岐し、容
器32の軸にほぼ垂直に接地装置37が接続されている
。そして遮断部33の左方には、最初は容器32軸とほ
ぼ平行に延び、口出し端子部32aの近傍で折れ、容器
32の軸にほぼ垂直に口出し端子部32bへ向かって引
出される通電導体36bを接続する。A current-carrying conductor 36a is connected to the right side of the cutoff part 33, which is drawn out toward the outlet terminal part 32b substantially parallel to the axis of the container 32. The current-carrying conductor 36a branches near the terminal portion 32b, and a grounding device 37 is connected substantially perpendicularly to the axis of the container 32. On the left side of the blocking part 33, there is a current-carrying conductor that initially extends substantially parallel to the axis of the container 32, breaks near the outlet terminal part 32a, and is pulled out almost perpendicularly to the axis of the container 32 toward the outlet terminal part 32b. Connect 36b.
即ち通電導体36bは、はぼL字形に曲がっている。That is, the current-carrying conductor 36b is bent into an L-shape.
さらに通電導体36aの分岐点及び遮断部33間には変
流器37aを通電導体36bの容器32軸にほぼ垂直と
なる部分には変流器37bを夫々間挿している。Furthermore, current transformers 37b are interposed between the branching point of the current-carrying conductor 36a and the cut-off portion 33, respectively, at portions of the current-carrying conductor 36b that are substantially perpendicular to the axis of the container 32.
また、口出し端子部32aには分岐母線38と接地装置
39を収納している分岐母線容器40が配置され。Further, a branch busbar container 40 that houses the branch busbar 38 and the grounding device 39 is arranged in the outlet terminal portion 32a.
その分岐母線容器40は、下方で口出し端子部32aと
接続されて容器32の軸とほぼ平行になっている。The branch busbar container 40 is connected to the outlet terminal portion 32a at the bottom and is substantially parallel to the axis of the container 32.
即ち容器40は、丁字形になっている。通電導体36b
は、垂直に立上り、上部の端子には接地装置39が配置
されている。容器40の左方の口出し端子部40aには
断路器41aを、右方の口出し端子部40bには断路器
41bを介して主母線42bを夫々接続している。尚、
本実施例においては、断路器41aと主母線42a及び
断路器41bと主母線42bは夫々一体的に構成してい
る。That is, the container 40 has a T-shape. Current-carrying conductor 36b
stands vertically, and a grounding device 39 is disposed at the upper terminal. A disconnector 41a is connected to the left outlet terminal portion 40a of the container 40, and a main bus 42b is connected to the right outlet terminal portion 40b via a disconnector 41b. still,
In this embodiment, the disconnector 41a and the main bus 42a and the disconnector 41b and the main bus 42b are each integrally constructed.
一方、口出し端子部32bには断路器43を介して引出
装置であるケーブルヘッド44を接続する。さらにこの
ケーブルヘッド44の側方には計器用変圧器45を接続
する。また口出し端子部32b、断路器43、ケーブル
ペンド44及び計器用変圧器45は直線的に配置してい
る。On the other hand, a cable head 44, which is a pull-out device, is connected to the outlet terminal portion 32b via a disconnector 43. Furthermore, an instrument transformer 45 is connected to the side of this cable head 44. Further, the outlet terminal portion 32b, the disconnector 43, the cable pen 44, and the instrument transformer 45 are arranged linearly.
このように各機器を構成すると、すべての絶縁スペーサ
46a、 46b、 46c、 46dは垂直配置にす
ることができる。When each device is configured in this way, all the insulating spacers 46a, 46b, 46c, and 46d can be arranged vertically.
以上述べたように本発明の実施例によれば、以下のよう
な効果が得られる。As described above, according to the embodiments of the present invention, the following effects can be obtained.
1、すべての絶縁スペーサ46a、 46b、 46c
、 46dを垂直配置にしているので、主母線42a、
42bと一体にされた断路器41a、 41bが組立
中に発生したゴミ及び断路器41a、 41bの操作に
より発生するゴミなどの絶縁スペーサにたまることがな
きため、耐絶縁性能が低下することはない。1. All insulation spacers 46a, 46b, 46c
, 46d are arranged vertically, so the main busbar 42a,
Dust generated during the assembly of the disconnectors 41a and 41b integrated with the disconnectors 42b and dust generated by the operation of the disconnectors 41a and 41b do not accumulate on the insulating spacer, so insulation performance does not deteriorate. .
2、第2図に示しているように、主母線42a、42b
と一体にされた断路器41a、 41bを水平配置にし
ているので、断路器41a、 41bの点検取外し等の
作業時に、第2図のように水平方向に引外し可能なため
、点検スペースを高さ方向に大きくする必要がなく、屋
内および地下に設ける時には、建屋などの建設費を安価
にすることができる。2. As shown in FIG. 2, the main busbars 42a, 42b
Since the disconnectors 41a and 41b integrated with the disconnector 41a and 41b are arranged horizontally, they can be removed horizontally as shown in Figure 2 when inspecting and removing the disconnectors 41a and 41b, thereby increasing the inspection space. There is no need to increase the size in the vertical direction, and when installed indoors or underground, the construction cost of buildings etc. can be reduced.
3、 さらに第3図に示しているように、遮断器31の
容器32をボルト締付けなどで補助ベース35で固定し
ているので、遮断器31の点検取外し等の作業時にまず
、補助ベースを取外し、遮断器容器32の口出し端子部
32a、 32bの接続を切離すことにより、遮断器3
1を他の機器を取外すことなくガス絶縁開閉装置より取
外し可能となり、広い点検スペースを必要としない。3. Furthermore, as shown in Fig. 3, the container 32 of the circuit breaker 31 is fixed on the auxiliary base 35 by tightening bolts, etc., so when inspecting or removing the circuit breaker 31, first remove the auxiliary base. By disconnecting the lead terminal portions 32a and 32b of the circuit breaker container 32, the circuit breaker 3
1 from the gas-insulated switchgear without removing other equipment, and does not require a large inspection space.
4、遮断器31の容器32と1分岐母線38と接地装置
39を収納した容器40を分離したため、遮断器31の
容器を縮小することができ、さらに遮断器31の容器3
2の中に1分岐母線38がないため、容器32を増大す
ることなく、容器32の中に母線側の変流器37bを設
けることが容易である。4. Since the container 32 of the circuit breaker 31 and the container 40 housing the 1-branch bus 38 and the grounding device 39 are separated, the container of the circuit breaker 31 can be reduced, and the container 3 of the circuit breaker 31 can be further reduced.
Since there is no single branch busbar 38 in the container 2, it is easy to provide the current transformer 37b on the busbar side in the container 32 without increasing the size of the container 32.
5、第4図に示しているように母線連絡用のガス絶縁開
閉装置のユニットであるが、第1図と同様に遮断器31
の容器32と母線用断路器41aを共通化でき、部品の
種類を増やす必要がなくなり、規格化に伴う生産性が向
上し製品の品質が安定する。5. As shown in Fig. 4, this is a gas insulated switchgear unit for busbar communication, but the circuit breaker 31 is similar to Fig. 1.
The container 32 and bus disconnector 41a can be shared, there is no need to increase the number of types of parts, productivity is improved due to standardization, and product quality is stabilized.
6、遮断器31の容器32及び操作装置34を水平配置
しているので、遮断路31の操作時の床面荷重を低減す
ることができ、基礎工事などの建設費を安価にすること
ができる。最後に、各実施例においては、単相及び三相
−括方式の両方式に適用し得る。6. Since the container 32 and operating device 34 of the circuit breaker 31 are arranged horizontally, the floor load when operating the circuit breaker 31 can be reduced, and construction costs such as foundation work can be reduced. . Finally, each embodiment can be applied to both single-phase and three-phase integrated systems.
以上説明したように、本発明においては、主母線に接続
する複数の口出し端子部と遮断器容器の間にあるすべて
の絶縁スペーサの方向を垂直に配置しているので、断路
器などの操作によるゴミなどが絶縁スペーサにたまるこ
とがなきため、耐絶縁性能が低下することがない。さら
に、遮断部変流器、接地装置を収納した容器と分岐母線
、接地装置を収納した容器に分離したため、遮断器容器
を小さくすることができ、さらに、遮断部の両側に変流
器を設けることができた。As explained above, in the present invention, all the insulating spacers between the plurality of lead terminals connected to the main bus bar and the circuit breaker container are arranged vertically, so that the operation of the disconnector, etc. Since dust and the like do not accumulate on the insulating spacer, the insulation performance does not deteriorate. Furthermore, because the breaker container is separated into a container that houses the current transformer and grounding device, and a container that stores the branch bus and grounding device, the breaker container can be made smaller, and current transformers are installed on both sides of the breaker. I was able to do that.
また、母線用断路器を水平配置にしたため、断路器の点
検取外し等の作業時に水平方向に引外し可能なため、点
検スペースを高さ方向に大きくする必要がなく、遮断器
容器の下方に、取外し可能な補助ベースを設けているの
で、遮断器の点検取外し時には、他の機器を取外すこと
なくガス絶縁開閉装置より取外し可能となり、広い点検
スペースを必要としないなどの利点を有するものである
。In addition, since the busbar disconnect switch is placed horizontally, it can be tripped horizontally when inspecting and removing the disconnect switch, so there is no need to increase the inspection space in the height direction, and the disconnect switch can be placed below the circuit breaker container. Since a removable auxiliary base is provided, when inspecting and removing the circuit breaker, it can be removed from the gas insulated switchgear without removing other equipment, and has the advantage of not requiring a large inspection space.
第1図は本発明のガス絶縁開閉装置の一実施例を示す概
略構成図、第2図および第3図は本発明の母線用断路器
および遮断器ユニットを取外した時の概111!端成図
、第4図は本発明の他の実施例として母線連絡用ユニッ
トのGISを示す概略構成図である。
31・・・遮断器 32・・・遮断器容器
33・・・遮断部 34・・・操作装置3
5・・・補助ベース 36a 、 36b・・
・通常導体37.39・・・接地装置 38・・
・分岐母線40・・・分岐母線容器 41a、4
1b・・・断路器42a、42b−土丹$ 4
3−・・断路器44・・・ケーブルヘッド 45・
・・計器用変圧器46a、46b、46c、46d・=
絶縁スペーサ代理人 弁理士 則 近 憲 佑
同 第子丸 健
第FIG. 1 is a schematic configuration diagram showing one embodiment of the gas insulated switchgear of the present invention, and FIGS. 2 and 3 are schematic diagrams illustrating 111 when the bus disconnector and circuit breaker unit of the present invention are removed. 4 is a schematic configuration diagram showing a GIS of a busbar communication unit as another embodiment of the present invention. 31... Circuit breaker 32... Circuit breaker container 33... Breaking part 34... Operating device 3
5...Auxiliary base 36a, 36b...
・Normal conductor 37.39...Grounding device 38...
・Branch busbar 40...Branch busbar container 41a, 4
1b...Disconnector 42a, 42b-Dotan$4
3-... Disconnector 44... Cable head 45.
...Instrument transformers 46a, 46b, 46c, 46d.=
Insulating spacer agent Patent attorney Nori Chika Ken Yudo Daishimaru Kendai
Claims (1)
母線断路器および接地装置を収納して構成した遮断器ユ
ニットと、この遮断器ユニットの遮断器容器の上部に突
設した口出端子容器に接続され内部に分岐母線および接
地装置を内蔵した分岐母線容器と、この分岐母線容器の
両側に垂直の絶縁スペーサを介して接続された主母線お
よび断路器と、前記遮断器ユニットの遮断器容器の線路
側口出端子容器に垂直の絶縁スペーサを介をして接続さ
れた断路器およびケーブルヘッドとから構成したことを
特徴とするガス絶縁開閉装置。A circuit breaker unit configured by housing a circuit breaker, a bus disconnector on both sides, and a grounding device in a circuit breaker container installed horizontally, and an outlet terminal protruding from the top of the circuit breaker container of this circuit breaker unit. A branch busbar container connected to the container and having a branch busbar and a grounding device built therein, a main busbar and disconnector connected to both sides of the branch busbar container via vertical insulating spacers, and a circuit breaker of the circuit breaker unit. A gas insulated switchgear comprising a disconnector and a cable head connected to a line side outlet terminal container of the container via a vertical insulating spacer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1084055A JPH02266806A (en) | 1989-04-04 | 1989-04-04 | Compressed-gas-insulated switchgear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1084055A JPH02266806A (en) | 1989-04-04 | 1989-04-04 | Compressed-gas-insulated switchgear |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02266806A true JPH02266806A (en) | 1990-10-31 |
Family
ID=13819813
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1084055A Pending JPH02266806A (en) | 1989-04-04 | 1989-04-04 | Compressed-gas-insulated switchgear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02266806A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05292613A (en) * | 1992-04-09 | 1993-11-05 | Mitsubishi Electric Corp | Gas insulated switchgear |
WO2000022708A1 (en) * | 1998-10-13 | 2000-04-20 | Hitachi, Ltd. | Gas insulated switchgear |
JP2000332661A (en) * | 1999-05-18 | 2000-11-30 | Fujitsu Ltd | Submarine branching device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562712B2 (en) * | 1971-12-29 | 1981-01-21 | ||
JPS61150605A (en) * | 1984-12-24 | 1986-07-09 | 三菱電機株式会社 | Gas insulated switch unit |
JPS6356105A (en) * | 1986-08-26 | 1988-03-10 | 株式会社東芝 | Gas insulated switchgear |
-
1989
- 1989-04-04 JP JP1084055A patent/JPH02266806A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS562712B2 (en) * | 1971-12-29 | 1981-01-21 | ||
JPS61150605A (en) * | 1984-12-24 | 1986-07-09 | 三菱電機株式会社 | Gas insulated switch unit |
JPS6356105A (en) * | 1986-08-26 | 1988-03-10 | 株式会社東芝 | Gas insulated switchgear |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05292613A (en) * | 1992-04-09 | 1993-11-05 | Mitsubishi Electric Corp | Gas insulated switchgear |
WO2000022708A1 (en) * | 1998-10-13 | 2000-04-20 | Hitachi, Ltd. | Gas insulated switchgear |
KR100399545B1 (en) * | 1998-10-13 | 2003-09-26 | 가부시끼가이샤 히다치 세이사꾸쇼 | Gas insulated switchgear |
JP2000332661A (en) * | 1999-05-18 | 2000-11-30 | Fujitsu Ltd | Submarine branching device |
JP4503112B2 (en) * | 1999-05-18 | 2010-07-14 | 富士通株式会社 | Underwater branching device |
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