JPH03145913A - Gas insulation switching device - Google Patents
Gas insulation switching deviceInfo
- Publication number
- JPH03145913A JPH03145913A JP1281644A JP28164489A JPH03145913A JP H03145913 A JPH03145913 A JP H03145913A JP 1281644 A JP1281644 A JP 1281644A JP 28164489 A JP28164489 A JP 28164489A JP H03145913 A JPH03145913 A JP H03145913A
- Authority
- JP
- Japan
- Prior art keywords
- bus
- insulated switchgear
- main bus
- bar
- gas insulated
- 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
- 238000009413 insulation Methods 0.000 title abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 7
- 230000004323 axial length Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241001469878 Valencia letourneuxi Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野コ
本発明はガス絶縁開閉装置に係り、特に二重主母線方式
のガス絶縁開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a gas insulated switchgear, and more particularly to a double main bus type gas insulated switchgear.
[従来の技術]
一般に、この種のガス絶縁開閉装置は、主母線毎にその
電圧を測定する計器用変圧1i:PTを有して構成され
ている。[Prior Art] Generally, this type of gas insulated switchgear is configured to include an instrument transformer 1i:PT for measuring the voltage of each main bus bar.
従来のガス絶縁開閉装置における計器用変圧器PTは、
三相−話形主母線に、その軸方向に三相分を並べて相別
の計器用変圧器PTを直接接続していた。このため高価
な主母線の軸長が長くなると共に、その分だけガス絶縁
開閉装置の据付面積が大きくなってしまう。Potential transformer PT in conventional gas insulated switchgear is
The three phases were lined up in the axial direction and the potential transformers PT for each phase were directly connected to the three-phase, twisted-type main bus. As a result, the axial length of the expensive main bus bar increases, and the installation area of the gas insulated switchgear increases accordingly.
これに対して、特開昭56−103908号公報に示さ
れたガス絶縁開閉装置では、主母線に接続された母線連
絡用ガス絶縁開閉装置ユニットの遮断器の両側にそれぞ
れ計器用変圧器PTを接続していた。On the other hand, in the gas insulated switchgear disclosed in Japanese Unexamined Patent Publication No. 56-103908, voltage transformers PT are installed on both sides of the circuit breaker of the busbar communication gas insulated switchgear unit connected to the main bus. It was connected.
[発明が解決しようとする課題]
従来のガス絶縁開閉装置における計器用変圧器PTの配
置は上述の如きであったため、主母線と直交する方向に
水平に配置される遮断器は、遮断器に近い方の主母線と
の間に計器用変圧器P Tのためのスペースを確保しな
ければならず、また遮断器と主母線間を接続する分岐母
線の軸長を大きくして、ガス絶縁開閉装置としての据付
面積を大きくしていた8
本発明の目的とするところは、据付面積を縮小したガス
絶縁開閉装置を提供するにある。[Problems to be Solved by the Invention] Since the arrangement of the potential transformer PT in the conventional gas-insulated switchgear is as described above, the circuit breaker is placed horizontally in the direction orthogonal to the main bus. It is necessary to secure space for the potential transformer PT between the main bus near the circuit breaker, and increase the axial length of the branch bus that connects the circuit breaker and the main bus to provide gas-insulated switchgear. 8. The installation area of the device has been increased.8 An object of the present invention is to provide a gas insulated switchgear with a reduced installation area.
[課題を解決するための手段]
本発明は上記目的を達成するために、主母線に接続され
たガス絶縁開閉装置ユニットのうち、遮断器を主母線の
異なる側に配置した2つのガス絶縁開閉装置ユニットに
、その遮断器から遠い方に位置した主母線と、その母線
断路器との間に接続した計器用変圧器PTをそれぞれ設
けたことを特徴とする。[Means for Solving the Problems] In order to achieve the above object, the present invention provides two gas insulated switchgear units in which circuit breakers are arranged on different sides of the main bus in a gas insulated switchgear unit connected to the main bus. The device unit is characterized in that it is provided with a potential transformer PT connected between the main bus located far from the circuit breaker and the bus disconnector.
[作用コ
本発明によるガス絶縁開閉装置は上述の如き構成である
から、両生母線用の計器用変圧器PTは2つのガス絶縁
開閉装置ユニットに分散して配置されることになり、し
かも、それぞれのガスM縁開閉装置ユニットは、その遮
断器から遠い方の主母線用の計器用変圧器PTを有する
ため、その遮断器と、遮断器に近い方の主母線間を近接
させることができるので、従来のように回部にスペース
を確保したり軸長の大きな分岐母線を必要とせず、従っ
て、据付面積の小さなガス′#IA縁開閉装置が得られ
る。[Function] Since the gas insulated switchgear according to the present invention has the above-described configuration, the instrument transformer PT for the bidirectional busbar is distributed and arranged in two gas insulated switchgear units, and each Since the gas M-edge switchgear unit has an instrument transformer PT for the main bus bar farther from the circuit breaker, the circuit breaker and the main bus bar closer to the circuit breaker can be placed close to each other. Unlike the conventional method, it is not necessary to secure a space in the turning section or to use a branch busbar with a large shaft length, and therefore, a gas '#IA edge opening/closing device with a small installation area can be obtained.
[実施例] 以下本発明の実施例を図面によって説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第1図はガス絶縁開閉装置の平面図で、はぼ水平に並置
した二重主母線1.2に4つのガス絶縁開閉装置ユニッ
トA、B、C,Dを接続して構成され、これらガス絶縁
開閉装置ユニットは、二重主母線の異なる側に遮断器を
配置して成る2組のグループから戒っている。つまり、
二重主母線1゜2の主母線1側に遮断器7B、7Cを配
置したガス絶縁開閉装置ユニットB、Cから成るグルー
プと、主母線2側に遮断器7A、7Dを配置したガス絶
縁開閉装置ユニットA、Dから成るグループとを有して
いる0本実施例では、これら2つのグループからそれぞ
れ1つずつのガス絶縁開閉装置ユニット、すなわち送電
線用ガス絶縁開閉装置ユニットAと母線連絡用ガス絶縁
開閉装置ユニットBを選び、これらに計器用変圧器11
A、IIBをそれぞれ設ける場合について説明する。Figure 1 is a plan view of a gas-insulated switchgear, which is constructed by connecting four gas-insulated switchgear units A, B, C, and D to a double main bus bar 1.2 that is arranged parallel to each other horizontally. The insulated switchgear unit consists of two groups with circuit breakers located on different sides of the double main busbar. In other words,
A group consisting of gas insulated switchgear units B and C with circuit breakers 7B and 7C placed on the main bus 1 side of the double main bus 1゜2, and a gas insulated switchgear unit with circuit breakers 7A and 7D placed on the main bus 2 side. In this embodiment, one gas insulated switchgear unit is provided from each of these two groups, namely, a gas insulated switchgear unit A for power transmission lines and a group consisting of equipment units A and D. Select gas insulated switchgear unit B and connect the instrument transformer 11 to these.
A case where A and IIB are respectively provided will be explained.
第2図は第1図の■−■線に沿った送電線用ガス絶縁開
閉装置ユニットAの正面図である。FIG. 2 is a front view of the gas insulated switchgear unit A for power transmission lines taken along the line ■-■ in FIG.
二重主母線の生母m2側に配置された遮断器7Aは、両
端にそれぞれ変流器6A、8Aと接地開閉器5A、9A
を有し、その一端は母線断路器3Aを介して主母線2に
、また母線断路器4Aを介して主母線1に接続され、そ
の他端はブッシング10Aと避雷器16Aに接続されて
いる。遮断器7Aから遠い方の生母llA1と母線断路
器4A間には分岐母線17Aが接続され、この分岐母線
17Aの分岐部18Aに計器用変圧器11Aが接続され
ると共に、主母線1の接地開閉器12Aが接続されてい
る。The circuit breaker 7A placed on the live bus m2 side of the double main bus has current transformers 6A, 8A and earthing switches 5A, 9A at both ends, respectively.
One end thereof is connected to the main bus 2 via a bus disconnector 3A, and the main bus 1 via a bus disconnector 4A, and the other end is connected to a bushing 10A and a lightning arrester 16A. A branch bus 17A is connected between the live bus 11A1 and the bus disconnector 4A, which is farther from the circuit breaker 7A, and an instrument transformer 11A is connected to the branch 18A of the branch bus 17A, and the grounding/closing of the main bus 1 is connected. 12A is connected.
第3図は第1図の■−■線に沿った母線連絡用ガス絶縁
開閉装置ユニットBの正面図である。FIG. 3 is a front view of the busbar communication gas insulated switchgear unit B taken along the line ■-■ in FIG. 1.
二重主母線の主母線1側に配置された遮断器7Bは、両
端にそれぞれ変流器6B、8Bと接地開閉器5B、9B
を有し、その一端は母線断路器4Bを介して主母線1に
接続され、また他端は遮断器7Bと同軸的に延びた後、
上方に屈曲され、更に遮断器7Bと平行にその上方を折
り返した接続母線13Bに接続され、この接続母4@i
3Bは母線断路器3Bおよび分岐母線17Bを介して
主母線2に接続されている。この分岐母線17Bの分岐
部18Bには計器用変圧器11Bおよび接地開閉器12
Bが接続されている。The circuit breaker 7B arranged on the main bus 1 side of the double main bus has current transformers 6B, 8B and earthing switches 5B, 9B at both ends, respectively.
, one end of which is connected to the main bus 1 via the bus disconnector 4B, and the other end extends coaxially with the circuit breaker 7B.
The connection bus 4@i is bent upward and connected to the connection bus 13B which is bent upward parallel to the circuit breaker 7B.
3B is connected to the main bus 2 via a bus disconnector 3B and a branch bus 17B. A voltage transformer 11B and a grounding switch 12 are connected to the branch section 18B of the branch bus 17B.
B is connected.
このように二重主母線1,2のそれぞれ異なる側方に遮
断器7A、7Bを西装置したガス絶縁開閉装置ユニット
A、Hに注目し、これら各ガス絶縁開閉装置ユニットA
、Hにおける遮断器7A、7Bから遠い方の主母線と母
線断路器間に計器用変圧器11A、IIBをそれぞれ設
けたため、遮断器7A、7Bを主母線1,2に近接して
配置することができ、据付面積の縮小に寄与する。また
従来のように主母線1,2に直接三相分の計器用変圧器
を接続すると主母線1,2の軸長が増大してしまうが、
第1図のように各ガス絶縁開閉装置ユニットA、B毎に
計器用変圧器11A、11r3を接続しているため、計
器用変圧器11A、]、IBによって主母線1.2の軸
長を増大させてしまうことがない。また通常、分岐母線
17A、17Bと計器用変圧器11A、118間には絶
縁スペーサが設けられるが、計器用変圧器11A、II
Bを水平配置することによって絶縁スペーサもlR直直
配化することができる。従って、金属パーティクルが混
入したとしてもMA縁ススペーサ付着して絶縁性能を低
下させることが少なくなる。Focusing on the gas insulated switchgear units A and H in which the circuit breakers 7A and 7B are installed on different sides of the double main busbars 1 and 2 as described above, each of these gas insulated switchgear units A
, H, since the potential transformers 11A and IIB were installed between the main bus and the bus disconnector which are farthest from the circuit breakers 7A and 7B, respectively, the circuit breakers 7A and 7B should be placed close to the main buses 1 and 2. This contributes to reducing the installation area. Also, if a three-phase voltage transformer is connected directly to the main buses 1 and 2 as in the past, the axial length of the main buses 1 and 2 will increase.
As shown in Fig. 1, since the instrument transformers 11A, 11r3 are connected to each gas insulated switchgear unit A, B, the axial length of the main bus 1.2 is determined by the instrument transformers 11A, ], IB. It will not increase. Also, normally, insulating spacers are provided between the branch buses 17A, 17B and the instrument transformers 11A, 118, but the instrument transformers 11A, II
By arranging B horizontally, the insulating spacer can also be directly connected to the 1R. Therefore, even if metal particles are mixed in, it is less likely that they will adhere to the MA edge spacer and deteriorate the insulation performance.
第4図は計器用変圧器を接続するものとして送電線用ガ
ス絶縁開閉装置ユニツI−Aと変圧器用ガス絶縁開閉装
置ユニットCを選んだ場合のガス絶縁開閉装置の平面図
である。FIG. 4 is a plan view of a gas insulated switchgear when a power transmission line gas insulated switchgear unit I-A and a transformer gas insulated switchgear unit C are selected to connect an instrument transformer.
送電線用ガス絶縁開閉装置ユニットAは第2図と同一で
あるので説明を省略する。The gas insulated switchgear unit A for power transmission lines is the same as that shown in FIG. 2, so a description thereof will be omitted.
変圧器用ガス絶縁開閉装置ユニットCは第5図に示すよ
うに、二重母線の主母線1側に遮断器7Cを配置して構
成されており、遮断器7Cの両端には変流器6C,8C
と接地開閉器5C,9Cとがそれぞれ設けられ、その一
端はケーブルペンド↓4を介して図示しない変圧器に接
続され、また他端は母線断路器4Cを介して主母線1に
、母線断路器3Cおよび分岐母線17Gを介して主母線
2に接続されている0分岐母線1.7Cの分岐部18C
には接地開閉器12Cと計器用変圧器11Cが接続され
ている。As shown in FIG. 5, the gas-insulated switchgear unit C for a transformer is constructed by arranging a circuit breaker 7C on the main bus 1 side of a double bus, and current transformers 6C, 8C
and grounding switches 5C and 9C are provided, one end of which is connected to a transformer (not shown) via a cable pend ↓4, and the other end connected to the main bus 1 via a bus disconnector 4C. Branch 18C of 0 branch bus 1.7C connected to main bus 2 via 3C and branch bus 17G
A grounding switch 12C and a voltage transformer 11C are connected to the terminal.
このように送電線用ガス絶縁開閉装置ユニットAと変圧
器用ガス絶縁開閉装置ユニツt−cに計器用変圧器11
A、11Cを接続した場合も、先の実施例と同一効果が
得られる。しかも本実施例における2つのガス絶縁開閉
装置ユニットA、Cは、第2図と第5図の比較から明ら
かなように、変流器と接地開閉器を含む遮断器7A、7
Cから主母線1.2に至るまでの構成を同一にして標準
化を図ることができる。In this way, the instrument transformer 11 is connected to the gas insulated switchgear unit A for power transmission lines and the gas insulated switchgear unit t-c for transformers.
Even when A and 11C are connected, the same effect as in the previous embodiment can be obtained. Furthermore, as is clear from a comparison between FIG. 2 and FIG.
Standardization can be achieved by making the configuration from C to the main bus 1.2 the same.
第6図は本発明の他の実施例によるガス絶縁開閉装置の
平面図で、基本的には第1図と同様であるが、母線連絡
用ガス絶縁開閉装置ユニットBの具体的な構成が相違し
ている。FIG. 6 is a plan view of a gas insulated switchgear according to another embodiment of the present invention, which is basically the same as FIG. 1, but the specific configuration of the busbar connection gas insulated switchgear unit B is different. are doing.
この母線連絡用ガス絶縁開閉装置ユニットBは正面図を
第7図に示すように、変流器6B、8Bおよび接地開閉
器5B、9Bを含む遮断器7Bと。As shown in the front view in FIG. 7, this gas-insulated switchgear unit B for busbar communication has a circuit breaker 7B including current transformers 6B, 8B and earthing switches 5B, 9B.
主母線1と、母線断路器4Bの構成は第3図の場合と同
一である。しかし、遮断器7Bの他端と主母線2間の構
成が多少相違する。つまり、遮断器7Bと母線断路器3
B間を接続する接続母線15Bは、遮断器7Bと平行に
折り返されているが、その位置は遮断器7Bの真上では
なく、第6図の裏面図である第8図に示すように遮断器
7Bの斜め上方に位置されている。The configurations of the main bus 1 and the bus disconnector 4B are the same as those shown in FIG. However, the configuration between the other end of the circuit breaker 7B and the main bus bar 2 is somewhat different. In other words, circuit breaker 7B and bus disconnector 3
The connection busbar 15B that connects between B and B is folded back parallel to the circuit breaker 7B, but its position is not directly above the circuit breaker 7B, but as shown in FIG. 8, which is a rear view of FIG. It is located diagonally above the vessel 7B.
このような構成によれば、第1図の実施例と同様に、両
針器用変圧器11A、IIBを主母線1゜2のそれぞれ
反対側に設けているので、主母線1゜2と遮断器7A、
7B間を近接して配置させ、これによ゛つて据付面積を
縮小することができる。またガス絶縁開閉装置ユニット
A、Hに計器用変圧器11A、11Bを接続しているた
め、主母線1゜2に直接計器用変圧器を接続した場合の
ように主母線1,2の軸長を増大させることもない、加
えて本実施例では遮断器7Bから遠い側の主母線2と遮
断器7B間を接続する接続母線15Bを、遮断器7Bの
斜め上方にずらして配置したため、遮断器7Bと母線新
路器4Bの上方には空間が形成され、これら開閉機器7
B、4Bの異常時、接続母線15Bを取外すことなく解
体することができる。According to such a configuration, as in the embodiment shown in FIG. 1, the double-needle transformers 11A and IIB are provided on opposite sides of the main bus 1.2, so that the main bus 1.2 and the circuit breaker are connected to each other. 7A,
7B can be arranged close to each other, thereby reducing the installation area. In addition, since the instrument transformers 11A and 11B are connected to the gas insulated switchgear units A and H, the axial length of the main buses 1 and 2 is different from the case where the instrument transformers are connected directly to the main bus bars 1 and 2. In addition, in this embodiment, the connection bus 15B that connects the main bus 2 on the side far from the circuit breaker 7B and the circuit breaker 7B is shifted diagonally above the circuit breaker 7B, so that the circuit breaker A space is formed above the bus line switch 7B and the new bus line switch 4B, and these switchgear equipment 7
When an abnormality occurs in B and 4B, it can be dismantled without removing the connection bus bar 15B.
上記の各実施例の説明から分かるように、二重主母線の
両側方にそれぞれガス絶縁開閉装置ユニットを配置する
構成において、それらユニットの遮断器から遠い方の主
母線と母線断路器間に計器用変圧器を接続すれば良く、
この構成を満足するなら任意のガス絶縁開閉装置ユニッ
トを選んで計必用変圧器を接続することができる。As can be seen from the description of each of the above embodiments, in a configuration in which gas-insulated switchgear units are arranged on both sides of a double main bus, there is a meter between the main bus and the bus disconnector that is farthest from the circuit breaker of these units. All you need to do is connect the transformer for
If this configuration is satisfied, any gas insulated switchgear unit can be selected and the voltage transformer connected to it.
[発明の効果]
以上説明したように本発明は、二重主母線の両側方に位
置したガス絶縁開閉装置ユニットの、遮断器から遠い方
の主母線と母線断路器間に、計器用変圧器を接続したた
め、主母線の軸方向長を増大することなく、また主母線
と遮断器間を接近させて配置させることができ、これに
よって据付面積を縮小したガス絶縁開閉装置が得られる
。[Effects of the Invention] As explained above, the present invention provides an instrument transformer between the main bus and the bus disconnector on the side farthest from the circuit breaker of the gas insulated switchgear unit located on both sides of the double main bus. Because of this connection, the main bus and the circuit breaker can be placed close to each other without increasing the axial length of the main bus, thereby providing a gas insulated switchgear with a reduced installation area.
第1図は本発明の一実施例によるガス絶縁開閉装置の平
面図、第2図および第3図は第1図のHn線および【■
−■線に沿った各ガス絶縁開閉装置ユニットの正面図、
第4図は本発明の他の実施例によるガス絶縁開閉装置の
平面図、第5図は第4図のv−v線に沿ったガス絶縁開
閉装置ユニットの正面図、第6図は本発明の更に他の実
施例によるガス絶縁開閉装置の平面図、第7図および第
8図は第6図の■−■線および■−■線に沿ったガス絶
縁開閉装置ユニットの平面図および裏面図である。
A、B、C,D・・・・・・ガス絶縁開閉装置ユニット
、1.2・・・・・・主母線、3A、3B、3C,4A
、4B、4.C・・・・・母線断路器、7A、7B、7
C・・・・・・遮断器、11A、11B、]、IC・・
・・・・計奏用変圧器、17A、17B、17C・・・
・・・分岐母線、18A、18B、18C・・・・分岐
部。
第
図
A、B、C,D ’7i’入で3.象間閏牧Iユ1.2
゛主音、惚
3A、3B、4A、4B : e、F、ff1ZT’J
、!7A、7B:2ど、!
11A 、 11B : i丁、ざ吊支1.−答12A
、12B :浮疋聞閲息
、7ト
第
図
第
図
8
第
5
図FIG. 1 is a plan view of a gas insulated switchgear according to an embodiment of the present invention, and FIGS. 2 and 3 are the Hn line and [■
− front view of each gas insulated switchgear unit along the line;
FIG. 4 is a plan view of a gas insulated switchgear unit according to another embodiment of the present invention, FIG. 5 is a front view of the gas insulated switchgear unit taken along line v-v in FIG. 4, and FIG. 6 is a plan view of the gas insulated switchgear unit according to the present invention. FIGS. 7 and 8 are a plan view and a back view of the gas insulated switchgear unit taken along the lines ■-■ and ■-■ in FIG. It is. A, B, C, D... Gas insulated switchgear unit, 1.2... Main bus bar, 3A, 3B, 3C, 4A
, 4B, 4. C...Busbar disconnector, 7A, 7B, 7
C...Breaker, 11A, 11B, ], IC...
... Instrumentation transformer, 17A, 17B, 17C...
... Branch busbar, 18A, 18B, 18C... Branch part. Figure A, B, C, D '7i' included 3. Zouma Hakuboku Iyu 1.2
゛Tonic, love 3A, 3B, 4A, 4B: e, F, ff1ZT'J
,! 7A, 7B: 2! 11A, 11B: i-cho, hanging support 1. -Answer 12A
, 12B: Ukihiki Observation, Figure 7, Figure 8, Figure 5
Claims (1)
断器を配置して成るガス絶縁開閉装置ユニットと、上記
二重主母線の他側に遮断器を配置して成る他のガス絶縁
開閉装置ユニットとを備え、上記両ガス絶縁開閉装置ユ
ニットは母線断路器を有し、この母線断路器を介して上
記二重主母線に接続して成るガス絶縁開閉装置において
、上記両ガス絶縁開閉装置ユニットは、それぞれ上記遮
断器から遠い方の主母線と上記母線断路器間に計器用変
圧器を接続したことを特徴とするガス絶縁開閉装置。 2、請求項1記載のものにおいて、上記計器用変圧器を
ほぼ水平に配置したことを特徴とするガス絶縁開閉装置
。 3、請求項1記載のものにおいて、上記母線断路器と主
母線間に分岐部を有する分岐母線を接続し、上記分岐部
に上記主母線を接地する接地開閉器と上記計器用変圧器
を接続したことを特徴とするガス絶縁開閉装置。[Scope of Claims] 1. A gas-insulated switchgear unit comprising double main buses arranged in parallel, a circuit breaker on one side of the double main buses, and a circuit breaker on the other side of the double main buses. and another gas insulated switchgear unit comprising a gas insulated switchgear unit, both gas insulated switchgear units having a bus disconnector, and a gas insulated switchgear unit connected to the double main bus through the bus disconnector. A gas insulated switchgear, wherein each of the gas insulated switchgear units has an instrument transformer connected between the main bus bar farther from the circuit breaker and the bus disconnector. 2. The gas insulated switchgear according to claim 1, wherein the voltage transformer is arranged substantially horizontally. 3. In the device according to claim 1, a branch bus having a branch part is connected between the bus disconnector and the main bus, and a grounding switch for grounding the main bus and the voltage transformer are connected to the branch part. A gas insulated switchgear characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1281644A JPH0750965B2 (en) | 1989-10-31 | 1989-10-31 | Gas insulated switchgear |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1281644A JPH0750965B2 (en) | 1989-10-31 | 1989-10-31 | Gas insulated switchgear |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03145913A true JPH03145913A (en) | 1991-06-21 |
JPH0750965B2 JPH0750965B2 (en) | 1995-05-31 |
Family
ID=17641977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1281644A Expired - Fee Related JPH0750965B2 (en) | 1989-10-31 | 1989-10-31 | Gas insulated switchgear |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0750965B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0652304U (en) * | 1992-12-14 | 1994-07-15 | 日新電機株式会社 | switchboard |
US5559669A (en) * | 1992-08-26 | 1996-09-24 | Inami; Yoshiaki | Compressed gas insulation switchgear |
-
1989
- 1989-10-31 JP JP1281644A patent/JPH0750965B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5559669A (en) * | 1992-08-26 | 1996-09-24 | Inami; Yoshiaki | Compressed gas insulation switchgear |
JPH0652304U (en) * | 1992-12-14 | 1994-07-15 | 日新電機株式会社 | switchboard |
Also Published As
Publication number | Publication date |
---|---|
JPH0750965B2 (en) | 1995-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |