JPS6338924B2 - - Google Patents
Info
- Publication number
- JPS6338924B2 JPS6338924B2 JP55078980A JP7898080A JPS6338924B2 JP S6338924 B2 JPS6338924 B2 JP S6338924B2 JP 55078980 A JP55078980 A JP 55078980A JP 7898080 A JP7898080 A JP 7898080A JP S6338924 B2 JPS6338924 B2 JP S6338924B2
- Authority
- JP
- Japan
- Prior art keywords
- disconnector
- container
- main bus
- phase
- containers
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000004020 conductor Substances 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はガス絶縁開閉装置、特に主母線の構成
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a gas insulated switchgear, and in particular to the construction of a main busbar.
近年の電力需要の増大に伴い大電力送電線回路
網が設置され、送電線電圧は500KV級に至つて
いる。
With the recent increase in electricity demand, high-power transmission line networks have been installed, and the transmission line voltage has reached 500KV class.
高電圧大容量に伴つて、開閉装置を構成する機
器は大型で重量物となる。このため、各機器の保
守点検や耐震性についても、十分な配慮が必要で
ある。 Due to the high voltage and large capacity, the equipment that makes up the switchgear becomes large and heavy. Therefore, sufficient consideration must be given to the maintenance and inspection of each equipment and its earthquake resistance.
絶縁媒体としてSF6ガスを用いたガス絶縁開閉
装置においては、主母線を地上近くに構成し、ガ
スしや断器を水平に配置する方式が、上述の要求
に対して最も優れた構成である。ガスしや断器を
水平に配置することによつて、ガス絶縁開閉装置
の高さを著しく低く抑えることができるが、ガス
しや断器と主母線の間の断路器の構成によつて全
体としての高さが決定されてしまう。このため、
同部を低く構成することが必要である。 For gas-insulated switchgear that uses SF6 gas as the insulating medium, the best configuration to meet the above requirements is to configure the main bus near the ground and place the gas shields and disconnectors horizontally. . The height of gas insulated switchgear can be kept extremely low by arranging gas shields and disconnectors horizontally, but the overall height is The height will be determined. For this reason,
It is necessary to configure this section low.
この点について、第１図および第２図に示す従
来の構成を説明する。 In this regard, the conventional configuration shown in FIGS. 1 and 2 will be explained.
水平に配置されたガスしや断器１の一端は、ブ
ツシングやケーブル等の絶縁導出手段２に接続さ
れ、他端は主母線３に接続されている。この主母
線３は２重母線方式を例示しており、３相分離構
成である甲乙母線U1，V1，W1，U2，V2，W2は
地上近くに平行に付設されている。この両手母線
３とガスしや断器１間にはそれぞれ断路器４，５
が接続されており、この断路器４，５は領主母線
の上方に載せられた縦形であつて、その可動子が
上下する方式であつた。 One end of the horizontally arranged gas shield and disconnector 1 is connected to an insulation lead-out means 2 such as a bushing or a cable, and the other end is connected to a main bus 3. This main bus 3 exemplifies a double bus system, and the three-phase separated busses U 1 , V 1 , W 1 , U 2 , V 2 , W 2 are attached in parallel near the ground. . Disconnectors 4 and 5 are provided between the two-handed busbar 3 and the gas shield switch 1, respectively.
The disconnectors 4 and 5 were of a vertical type placed above the master bus line, and their movers moved up and down.
このため、この断路器４，５の高さによつて全
体の高さが決められてしまうことになる。また、
架台を少なくするためにガスしや断器１と甲母線
U1間および両甲乙母線U1，U2間に接続する機
器、例えば断路器４，５接続用導体および計器用
変流器等を、主に甲乙母線U1，U2によつて支持
している。これは、初期の目的である架台を少な
くすることにおいて大きな効力を発揮する。しか
し、これは不必要に主母線の容器を強固に製作す
ることになつた。つまり、第２図の如く乙母線
W2は、直線的な母線管ａと、母線管ａに直角で
上方に延びる分岐管ｂとから成り、断路器５ｗ等
の重量によつて母線管ａと分岐管ｂの接続部に応
力集中が起こる。従つて母線管ａはこれに耐える
ように設計製作しなければならず、要求される圧
力容器に比べて肉厚が大きく高価なものとなつて
しまうことになる。 Therefore, the height of the disconnectors 4 and 5 determines the overall height. Also,
In order to reduce the number of frames, the gas shield switch 1 and the upper bus line are installed.
Devices connected between U 1 and both A and B buses U 1 and U 2 , such as conductors for connecting disconnectors 4 and 5 and instrument current transformers, are mainly supported by A and B buses U 1 and U 2 . ing. This is highly effective in reducing the number of frames, which was the initial objective. However, this resulted in the main bus bar being made unnecessarily strong. In other words, as shown in Figure 2, the bus line
W2 consists of a linear busbar pipe a and a branch pipe b extending upward at right angles to the busbar pipe a, and stress is concentrated at the connection between the busbar pipe a and the branch pipe b due to the weight of the disconnector 5w, etc. happens. Therefore, the busbar tube a must be designed and manufactured to withstand this, and it ends up being thicker and more expensive than the required pressure vessel.
本発明の目的は、断路器用容器を活用して主母
線の製作を容易にすると共に、全体の高さを低く
抑えたガス絶縁開閉装置を提供するにある。
An object of the present invention is to provide a gas-insulated switchgear that utilizes a disconnector container to facilitate the manufacture of a main bus bar and that has a low overall height.
本発明は、主母線に対してほぼ直角な水平線に
沿つて付設面に所定距離を隔てて配置した少なく
とも各相２組の相分離形のガスしや断器とを備
え、主母線とガスしや断器間をそれぞれ断路器用
容器の内部に断路部を構成して自立させる断路器
を介して接続する際に、各相の断路器は、付設面
に直立させるほぼ円筒状の主体部と、この主体部
の下方の位置の主母線と同一軸線上に形成した１
対の接続部とを有する断路器用容器を用いて形成
し、所定距離を隔てて配置する同相の両断路器用
容器の対向する下方の接続部間は、絶縁スペーサ
及び一方側にベローズを介して直線状の専用容器
で接続して主母線としたものである。
The present invention includes at least two sets of phase-separated type gas shields and disconnectors for each phase arranged at a predetermined distance on an attached surface along a horizontal line substantially perpendicular to the main bus, When connecting a disconnector and a disconnector through a disconnector that is made to stand upright by forming a disconnector in a disconnector container, each phase disconnector has a substantially cylindrical main body that stands upright on the attached surface, 1 formed on the same axis as the main generatrix at the lower position of this main body.
A straight line is formed between the opposing lower connection parts of both disconnector containers of the same phase, which are arranged at a predetermined distance apart, through an insulating spacer and a bellows on one side. The main bus is connected by a special container shaped like the main bus.
以下、本発明を第３図から第７図に示す実施例
によつて説明する。
The present invention will be explained below with reference to embodiments shown in FIGS. 3 to 7.
第３図はＵ相のみを断面したものである。相分
離構成の主母線は、第１図と同じく付設面へ並行
に配置されているが、その密封容器は第４図から
わかるように断路器用容器１３ａ，１３ｂと専用
容器２３ａ，２３ｂから成る。また両容器１３
ａ，１３ｂの間には必要に応じて専用容器２３
ａ，２３ｂの一部としてのベローズ２０が接続さ
れる。専用容器２３ａの右端は絶縁スペーサ２１
を介して断路器用容器１３ｂの下部左端に接続さ
れ、断路器用容器１３ｂの下部右端は絶縁スペー
サ２２およびベローズ２０を介して専用容器２３
ｂに接続されている。各容器２３ａ，１３ｂ，２
３ｂ内の母線導体１０は直線的に配置されてい
る。このようにして乙母線U2は、途中に断路器
５の各容器１３ａ，１３ｂとその内部空間を利用
して構成されている。今、断路器５についてみる
と、断路器用容器１３ｂと絶縁スペーサ２１，２
２と第３図の絶縁スペーサ２６から気密に成され
ている。専用容器２３ａ，２３ｂはそれぞれ支持
脚によつて付設面に支持固定しても良いし、同一
相の断路器用容器１３ａ，１３ｂによつて付設面
に支持固定することもできる。また、この専用容
器２３ａ，２３ｂは同一相の断路器用容器１３
ａ，１３ｂなどの間を接続するものであつて、母
線導体１０から分岐された導体のための分岐管も
つていない。従つて、同一相の断路器用容器１３
ａ，１３ｂを第１，２図に示した従来の断路器
４，５の容器に対応するものとするなら、従来の
主母線に相当するものは専用容器２３ａ，２３ｂ
であるから、この専用容器２３ａ，２３ｂは上述
の如く分岐導体のための分岐管を持つておらず、
構造は単なる直線状に単純化され安価に製作する
ことができる。 FIG. 3 shows a cross section of only the U phase. The main busbar of the phase-separated structure is arranged parallel to the attached surface as in FIG. 1, but the sealed container is composed of disconnector containers 13a, 13b and dedicated containers 23a, 23b, as seen in FIG. Also, both containers 13
A special container 23 is placed between a and 13b as necessary.
A bellows 20 as part of a, 23b is connected. The right end of the dedicated container 23a is an insulating spacer 21
The lower right end of the disconnector container 13b is connected to the dedicated container 23 via an insulating spacer 22 and a bellows 20.
connected to b. Each container 23a, 13b, 2
The bus conductors 10 within 3b are arranged linearly. In this way, the bus line U2 is constructed using the containers 13a, 13b of the disconnector 5 and the internal space thereof. Now, regarding the disconnector 5, the disconnector container 13b and the insulating spacers 21, 2
2 and an insulating spacer 26 shown in FIG. The dedicated containers 23a, 23b may be supported and fixed to the attached surface by support legs, respectively, or they can be supported and fixed to the attached surface by disconnector containers 13a, 13b of the same phase. In addition, these dedicated containers 23a and 23b are the same phase disconnector container 13.
A, 13b, etc., and does not include a branch pipe for a conductor branched from the bus conductor 10. Therefore, the disconnector container 13 of the same phase
If a and 13b correspond to the containers of the conventional disconnectors 4 and 5 shown in FIGS. 1 and 2, the dedicated containers 23a and 23b correspond to the conventional main busbars.
Therefore, these dedicated containers 23a and 23b do not have branch pipes for branch conductors as described above,
The structure is simple and can be manufactured at low cost.
付設面に固定した断路器用容器１３内には、第
３図のように固定子１１が母線導体１０に固定さ
れ、一方可動子１２は図示しない操作器によつて
上下方向に開閉動作するように構成されている。
この可動子１２は導体１９を介してガスしや断器
１の一端子へ接続されると共に、隣接する断路器
用容器１６内に母線導体１７を有する断路器４の
可動子へ電気的に接続されている。甲母線U1と
断路器４の構成は、先の乙母線U2と断路器５の
構成と同一である。断路器４，５およびガスしや
断器１間には必要に応じてベローズ１５，１８が
設けられる。 In a disconnector container 13 fixed to an attached surface, a stator 11 is fixed to a bus conductor 10 as shown in FIG. It is configured.
This mover 12 is connected to one terminal of the gas shield and disconnector 1 via a conductor 19, and is electrically connected to the mover of a disconnector 4 having a bus conductor 17 in an adjacent disconnector container 16. ing. The configurations of the first bus line U 1 and the disconnector 4 are the same as those of the second bus line U 2 and the disconnector 5 described above. Bellows 15 and 18 are provided between the disconnectors 4 and 5 and the gas shield and disconnector 1 as required.
この構成によれば、主母線は単なる管状の密封
容器２３ａ，２３ｂによつて構成することがで
き、第１図のように分岐導体のための分岐部を形
成しなくても良いので、長尺物の扱いや製作が容
易になる。また、断路器４および５は第１図の場
合に比べて高さを低くすることができ、同時にガ
スしや断器１の高さを抑えることができる。しか
も、各断路器容器１３，１６は自立形であるた
め、その重量が主母線に加わることもなくなる。 According to this configuration, the main bus bar can be constructed from a simple tubular sealed container 23a, 23b, and there is no need to form a branch part for a branch conductor as shown in FIG. It becomes easier to handle and produce objects. Furthermore, the heights of the disconnectors 4 and 5 can be made lower than in the case shown in FIG. 1, and at the same time, the height of the gas cylinder and disconnector 1 can be suppressed. Moreover, since each disconnector container 13, 16 is self-supporting, its weight is not added to the main bus bar.
第５図は断路器用容器１３の例を示しており、
下方には乙母線U2の専用容器２３ａ，２３ｂと
の接続部５０，５１を有し、上方には第３図の接
続用導体１４との接続部５２を有している。この
接続部５２は接続部５０，５１に対し直角な方向
に導主されている。 FIG. 5 shows an example of the disconnector container 13,
At the bottom, there are connection parts 50, 51 for connecting to the exclusive containers 23a, 23b of the bus line U2 , and at the top, there is a connection part 52 for connecting to the connection conductor 14 shown in FIG. 3. This connecting portion 52 is conductive in a direction perpendicular to the connecting portions 50 and 51.
第６図は断路器用容器１６の例を示しており、
第５図の断路器用容器１３の構成に、更に接続部
５３が付加されていて、この接続部５３は接続部
５２と同一軸線上に形成されている。 FIG. 6 shows an example of the disconnector container 16,
A connecting portion 53 is further added to the configuration of the disconnector container 13 shown in FIG. 5, and this connecting portion 53 is formed on the same axis as the connecting portion 52.
断路器用容器１３として第６図のものを用い
て、接続部５３を端蓋で封じて使用するなら、断
路器用容器は１種類で済むことになる。 If the one shown in FIG. 6 is used as the disconnector container 13 and the connecting portion 53 is sealed with an end cap, only one type of disconnector container is required.
このように断路器のために、主母線の母線管と
無関係に断路器用容器１３，１６を構成できるの
で、専用容器２３ａ，２３ｂは製作上および輸送
上の都合に応じて準備できる。 In this way, the disconnector containers 13 and 16 can be configured for the disconnector independently of the busbar tube of the main busbar, so the dedicated containers 23a and 23b can be prepared according to manufacturing and transportation conveniences.
第７図は３相分離構成の２重母線方式である第
３図および第４図の斜視図として示すガス絶縁開
閉装置である。 FIG. 7 is a gas insulated switchgear shown as a perspective view of FIGS. 3 and 4, which is a double bus system with a three-phase separation configuration.
各相は略同一構成であるのでＵ相について説明
する。 Since each phase has substantially the same configuration, the U phase will be explained.
主母線は甲母線U1および乙母線U2を有し、そ
れぞれ同じレベルで並行に設けられている。両母
線U1，U2は、それぞれ断路器用容器１６ａ，１
６ｂおよび１３ａ，１３ｂの一部を利用して構成
されている。両母線U1，U2を除く主要機器であ
るガスしや断器１Ｕ，１U′と断路器用容器１３
ａ，１３ｂ，１６ａ，１６ｂは、付設面にほぼ円
筒状の主体部を直接固定し、他の接続用導体１４
ａ，１４ｂ等はこれら主要機器で支持している。
主母線を構成する専用容器２３ａ，２３ｂは一端
を断路器用容器１３ａ，１３ｂで支持しても良い
し、独自に設けた支持脚で支持しても良い。 The main bus line has a first bus line U1 and a second bus line U2 , which are provided in parallel at the same level. Both bus lines U 1 and U 2 are disconnector containers 16a and 1, respectively.
6b and a portion of 13a, 13b. Gas shield disconnectors 1U , 1U' and disconnector container 13, which are the main equipment excluding both bus bars U 1 and U 2
a, 13b, 16a, 16b directly fix the substantially cylindrical main body to the attached surface, and connect the other connecting conductor 14.
a, 14b, etc. are supported by these main devices.
The dedicated containers 23a, 23b constituting the main bus bar may be supported at one end by the disconnector containers 13a, 13b, or may be supported by independently provided support legs.
この図からわかるように、主母線は、従来のよ
うに母線管の上方に分岐管を形成して分岐管に断
路器用容器を接続しているのではなく、付設面に
ほぼ円筒状の主体部を自立させる断路器用容器と
主母線の専用容器を直列に接続して主母線管を形
成しているため、主母線管の軸長や相間距離に拘
らず各相の断路器用容器を同一構造にすることが
できる。 As can be seen from this figure, the main busbar does not have a branch pipe above the busbar pipe and connect the disconnector container to the branch pipe as in the past, but instead has an approximately cylindrical main body on the attached surface. Since the main bus tube is formed by connecting the disconnect switch container that makes it independent and the special container for the main bus bar in series, the disconnect switch containers for each phase can have the same structure regardless of the axial length of the main bus tube or the distance between the phases. can do.
上述の点を各機器毎に比較してみると、断路器
用容器１３ａ，１３ｂは従来の断路器５の容器に
対応することになり、機器としての主母線は専用
容器２３ａ，２３ｂである。言い換えると主母線
の容器は、従来のように導体分岐のための分岐部
を形成することなく直線的構成の専用容器２３
ａ，２３ｂとしたため、従来に比べて容器数を少
なくできると共に容器構造を簡単にでき、主母線
のコストを下げることができる。 Comparing the above points for each device, the disconnector containers 13a and 13b correspond to the containers of the conventional disconnector 5, and the main bus bars as devices are dedicated containers 23a and 23b. In other words, the container for the main bus bar is a dedicated container 23 with a linear structure without forming a branch part for conductor branches as in the conventional case.
a, 23b, the number of containers can be reduced compared to the conventional case, the container structure can be simplified, and the cost of the main bus bar can be reduced.
上記実施例においては、主母線を相分離形とし
て構成した例に説明したが、３相一括形にも適用
できる。また、主母線を２重母線方式を例に説明
したが、単母線方式においても適用できる。更
に、主母線の両側に開閉ユニツトを配置する方式
や、同相のライン側と変圧器を近接して配置構成
する方式用にも適用することができる。 In the above embodiment, an example in which the main bus bar is configured as a phase-separated type has been described, but the present invention can also be applied to a three-phase all-in-one type. Further, although the description has been given using a double main bus system as an example, the present invention can also be applied to a single bus system. Furthermore, it can also be applied to a system in which switching units are arranged on both sides of the main bus bar, and a system in which a transformer is arranged close to the line side of the same phase.
以上説明したように、本発明はガスしや断器と
各断路器における断路器用容器のほぼ円筒状の主
体部をそれぞれ付設面に固定し、両者間を接続す
る接続導体を重量物である両者によつて支持する
ため耐震性を高め、また主母線を構成する専用容
器に断路器の荷重を加えないようにしたため、主
母線は不必要に大きな強度を要求されない。ま
た、主母線を相分離形とし、断路器用容器はほぼ
円筒状の主体部を直接付設する自立形として所定
距離隔てて少なくとも２つ設け、この間を直線的
構成の専用容器で接続する構成としたため、主母
線の構成は極めて単純となり安価に製作できる。
As explained above, the present invention fixes the substantially cylindrical main body of the gas tank disconnector and the disconnector container of each disconnector to the attached surface, and connects the connecting conductor between the two, which is a heavy object. The main bus bar is not required to have unnecessarily high strength because it is supported by the main bus bar, which improves its earthquake resistance, and because the load of the disconnect switch is not applied to the dedicated container that makes up the main bus bar. In addition, the main bus bar is of a phase-separated type, and at least two disconnector containers are installed as self-standing types with a substantially cylindrical main body directly attached, separated by a predetermined distance, and connected between them by a dedicated container with a linear configuration. The structure of the main bus bar is extremely simple and can be manufactured at low cost.
第１図は従来のガス絶縁開閉装置の正面図、第
２図は第１図の―線から見た側面図、第３図
は本発明の一実施例によるガス絶縁開閉装置の部
分断面正面図、第４図は第３図の―線から見
た部分断面側面図、第５図および第６図はそれぞ
れ第３図の断路器用容器を示す斜視図、第７図は
第３図および第４図に示すガス絶縁開閉装置の斜
視図である。
１，１Ｕ，１U′…ガスしや断器、３…主母線、
４，５…断路器、１３，１３ａ，１３ｂ，１６，
１６ａ，１６ｂ…断路器用容器、１４…接続導
体、２３，２３ａ，２３ｂ…専用容器、５０〜５
３…接続部。
Fig. 1 is a front view of a conventional gas insulated switchgear, Fig. 2 is a side view taken from the - line in Fig. 1, and Fig. 3 is a partially sectional front view of a gas insulated switchgear according to an embodiment of the present invention. , FIG. 4 is a partially sectional side view taken from the line - in FIG. 3, FIGS. 5 and 6 are perspective views showing the disconnector container of FIG. 3, and FIG. FIG. 2 is a perspective view of the gas-insulated switchgear shown in the figure. 1, 1U, 1U'...Gas shield disconnector, 3...Main bus bar,
4, 5...Disconnector, 13, 13a, 13b, 16,
16a, 16b... Disconnector container, 14... Connection conductor, 23, 23a, 23b... Exclusive container, 50-5
3...Connection part.
Claims (1)
線と、上記主母線に対してほぼ直角な水平線に沿
つて付設面に所定距離を隔てて配置した少なくと
も各相２組の相分離形のガスしや断器とを備え、
上記主母線と上記ガスしや断器間をそれぞれ断路
器用容器の内部に断路部を構成して自立させる断
路器を介して接続したものにおいて、各相の上記
断路器は、付設面に直立させるほぼ円筒状の主体
部と、上記主体部の下方の位置の上記主母線と同
一軸線上に形成した１対の接続部とを有する断路
器用容器を用いて形成し、所定距離を隔てて配置
する上記同相の両断路器用容器の対向する下方の
接続部間は、絶縁スペーサ及び一方側にベローズ
を介して直線状の専用容器で接続して主母線とし
たことを特徴とするガス絶縁開閉装置。1. A main bus line configured to extend linearly on the attached surface, and at least two sets of phase-separated gas for each phase arranged at a predetermined distance on the attached surface along a horizontal line substantially perpendicular to the main bus line. Equipped with a cutter and a cutter,
The above-mentioned main bus bar and the above-mentioned gas liner and disconnector are connected via a self-supporting disconnector with a disconnector section configured inside a disconnector container, and the disconnector of each phase is installed upright on the attached surface. Formed using a disconnector container having a substantially cylindrical main body and a pair of connecting parts formed on the same axis as the main bus line below the main body, and arranged at a predetermined distance apart. A gas insulated switchgear characterized in that the opposing lower connection parts of the two disconnector containers of the same phase are connected by a straight dedicated container via an insulating spacer and a bellows on one side to form a main bus bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7898080A JPS576506A (en) | 1980-06-13 | 1980-06-13 | Gas insulated switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7898080A JPS576506A (en) | 1980-06-13 | 1980-06-13 | Gas insulated switching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS576506A JPS576506A (en) | 1982-01-13 |
| JPS6338924B2 true JPS6338924B2 (en) | 1988-08-02 |
Family
ID=13677033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7898080A Granted JPS576506A (en) | 1980-06-13 | 1980-06-13 | Gas insulated switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS576506A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041670C (en) * | 1994-07-25 | 1999-01-13 | 株式会社日立制作所 | Gas insulated switchgear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329539A (en) * | 1976-08-31 | 1978-03-18 | Toshiba Corp | Enclosed switchgear |
| JPS5342103A (en) * | 1976-09-27 | 1978-04-17 | World Energy System | Method of and apparatus for collecting hydrocarbon and other matters from drilled underground layer |
| JPS53122742A (en) * | 1977-03-31 | 1978-10-26 | Toshiba Corp | Enclosed switch |
| JPS5526058A (en) * | 1978-08-16 | 1980-02-25 | Hitachi Ltd | Gas insulated substation |
| JPS5532500A (en) * | 1979-09-03 | 1980-03-07 | Hitachi Ltd | Power insulated switch |
-
1980
- 1980-06-13 JP JP7898080A patent/JPS576506A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5329539A (en) * | 1976-08-31 | 1978-03-18 | Toshiba Corp | Enclosed switchgear |
| JPS5342103A (en) * | 1976-09-27 | 1978-04-17 | World Energy System | Method of and apparatus for collecting hydrocarbon and other matters from drilled underground layer |
| JPS53122742A (en) * | 1977-03-31 | 1978-10-26 | Toshiba Corp | Enclosed switch |
| JPS5526058A (en) * | 1978-08-16 | 1980-02-25 | Hitachi Ltd | Gas insulated substation |
| JPS5532500A (en) * | 1979-09-03 | 1980-03-07 | Hitachi Ltd | Power insulated switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041670C (en) * | 1994-07-25 | 1999-01-13 | 株式会社日立制作所 | Gas insulated switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS576506A (en) | 1982-01-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPWO2009057218A1 (en) | Gas insulated switchgear | |
| JPS6338924B2 (en) | ||
| JP2008245376A (en) | Gas-insulated switchgear | |
| JPS6338925B2 (en) | ||
| JPH0127368Y2 (en) | ||
| JPS5937818A (en) | Gas insulated switching device | |
| JPS6127966B2 (en) | ||
| JP5547694B2 (en) | Gas insulated switchgear | |
| JPS5915445B2 (en) | gas insulated switchgear | |
| JPS598401Y2 (en) | gas insulated switchgear | |
| JP2003111222A (en) | Gas-insulated switchgear | |
| JP2853507B2 (en) | Substation equipment | |
| JPH02266806A (en) | Compressed-gas-insulated switchgear | |
| JPS582086Y2 (en) | gas insulated switchgear | |
| JPH0632734Y2 (en) | Gas insulated switchgear | |
| JPH0613541Y2 (en) | Gas insulated switchgear | |
| JPH0140566B2 (en) | ||
| JPH0646163Y2 (en) | Gas insulated switchgear | |
| JPH0223049Y2 (en) | ||
| CN111987595A (en) | Three-phase split type transformer wiring device, wiring method and power transformation system | |
| JPS6130484B2 (en) | ||
| JPH04128019U (en) | Gas insulated switchgear | |
| JPH0213521B2 (en) | ||
| JPH0458704A (en) | Gas insulation switchgear | |
| JPH0793774B2 (en) | Gas insulated switchgear |