JPS6132764B2 - - Google Patents
Info
- Publication number
- JPS6132764B2 JPS6132764B2 JP52032140A JP3214077A JPS6132764B2 JP S6132764 B2 JPS6132764 B2 JP S6132764B2 JP 52032140 A JP52032140 A JP 52032140A JP 3214077 A JP3214077 A JP 3214077A JP S6132764 B2 JPS6132764 B2 JP S6132764B2
- Authority
- JP
- Japan
- Prior art keywords
- detection
- container
- sealed
- displacement
- substation
- 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
- 238000001514 detection method Methods 0.000 claims description 33
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000020169 heat generation Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000005856 abnormality Effects 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 239000012212 insulator Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【発明の詳細な説明】
本発明は絶縁性ガスを内部に封入した変電機器
の充電部の異常発熱を検出し、未然に事故を防止
する改良した変電機器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved substation device that detects abnormal heat generation in a live part of a substation device whose interior is filled with an insulating gas and prevents accidents from occurring.
絶縁性ガスを封入した変電機器例えばガスしや
断器は一般に第１図のように構成されている。第
１図に於て１，１′はブツシングであり、その内
部を貫通する導体２，２′を通じしや断器と架空
電線とを電気的に接続している。電流の経路は導
体２、継手１０、固定接触子９、可動接触子８、
操作ロツド７、図示しない接触子、継手１２、導
体２′により構成されている。これらの充電部は
絶縁物４、および消弧性を有する絶縁性ガス２４
により外部と絶縁されている絶縁ガスはタンク３
およびブツシング１，１′により外気とシールさ
れ、内部には絶縁性ガスが高圧で封入されてい
る。しや断動作は図示しない駆動部により操作ロ
ツド６を図中矢印方向に駆動し、絶縁ロツド４ａ
および操作ロツド７を介して可動接触子８を動か
し、固定接触子９との間に生じたアークにパツフ
アー室７ａ内で圧縮した絶縁性ガス２４を吹き付
けて電流をしや断する。第１図は通電状態の図で
ある。接触子８，９はバネ等により確実に接触す
る様、設計製作されているが、多数回の開閉動作
の結果、接触子８，９が摩耗したり、しや断動作
時に発生するアーク放電等により消耗する可能性
があり、さらに駆動系統の異常等、種々の理由に
より、その電気的接触が不確実になる可能性があ
る。この様な場合、接触抵抗値の異常増加から接
触子部分が異常に発熱する事になる。異常発熱が
長時間続くと、この近辺への影響が重大となる。
例えば絶縁物４や絶縁ノズル１１の劣化、変形を
生じたり、部分的な放電による絶縁ガスの劣化
等、大事故の発生要因を生じてくる。従来絶縁性
ガスの温度又は同密度を検出する等により、絶縁
性ガスの異常を検出して来たが、この方法は間接
的手法であり、ガス全体としての異常検出である
ため例えばガスシール部のリークや圧力管理に対
しては有効であるが上記の様な局部的な異常高温
状態に対しては検出できない可能性が大である。
また温度検出を要する部分は高電圧に充電されて
いるため、従来のサーモカツプルやバイメタルに
よる方法では直接的な温度検出が困難であつた。 2. Description of the Related Art Substation equipment filled with insulating gas, such as gas shields and disconnectors, is generally constructed as shown in FIG. In FIG. 1, 1 and 1' are bushings, and conductors 2 and 2' passing through the bushings electrically connect the disconnector and the overhead wire. The current path includes the conductor 2, the joint 10, the fixed contact 9, the movable contact 8,
It is composed of an operating rod 7, a contact (not shown), a joint 12, and a conductor 2'. These live parts include an insulator 4 and an insulating gas 24 having arc-extinguishing properties.
The insulating gas is insulated from the outside by tank 3.
It is sealed from the outside air by bushings 1 and 1', and an insulating gas is sealed inside at high pressure. The shredding operation is performed by driving the operating rod 6 in the direction of the arrow in the figure by a drive unit (not shown), and then moving the insulating rod 4a.
The movable contact 8 is then moved via the operating rod 7, and the insulating gas 24 compressed in the puffer chamber 7a is sprayed onto the arc generated between the movable contact 8 and the fixed contact 9, thereby cutting off the current. FIG. 1 is a diagram of the energized state. The contacts 8 and 9 are designed and manufactured to ensure reliable contact using springs, etc. However, as a result of multiple opening and closing operations, the contacts 8 and 9 may wear out, or arc discharges may occur during the opening and closing operations. Furthermore, the electrical contact may become unreliable due to various reasons such as abnormalities in the drive system. In such a case, the contact portion will generate abnormal heat due to an abnormal increase in the contact resistance value. If abnormal heat continues for a long time, the impact on the surrounding area will be significant.
For example, deterioration and deformation of the insulator 4 and the insulating nozzle 11 occur, deterioration of the insulating gas due to partial discharge, and other factors that cause a major accident. Conventionally, abnormalities in insulating gas have been detected by detecting the temperature or density of the insulating gas, but this method is an indirect method and detects abnormalities in the entire gas, so for example, it is difficult to detect abnormalities in the gas seal. Although this method is effective for controlling leaks and pressure, there is a high possibility that local abnormal high temperature conditions such as those mentioned above cannot be detected.
Furthermore, since the parts that require temperature detection are charged to a high voltage, it has been difficult to directly detect temperature using conventional methods using thermocouples or bimetals.
本発明は以上の点に鑑みてなされたもので、異
常発熱の可能性のある部分が、あらかじめ設定さ
れた温度を越えた時に機械的変位を外部へ取り出
すことが可能な検出装置を備え、充電部の局部的
な異常発熱による重大事故への波及を未然に防止
できる温度検出装置を備えたしや断器等の変電機
器を得ることを目的とする。 The present invention has been made in view of the above points, and is equipped with a detection device that can extract mechanical displacement to the outside when a part that is likely to generate abnormal heat exceeds a preset temperature. The purpose of the present invention is to obtain substation equipment, such as a disconnector, equipped with a temperature detection device that can prevent serious accidents from occurring due to localized abnormal heat generation.
かかる目的を達成するために、球面の一部を形
成する様な板材を密閉容器の一端面として使用
し、容器内に蒸発性物質を封入することにより、
密閉容器の一端面が外部温度変化に追従する内部
ガス圧の変化により座屈変形し、大なる変位を生
じ、いわゆるヒステリシス現象を持つことを利用
し、これを過度測定器として利用したものであ
る。 In order to achieve this purpose, a plate material forming part of a spherical surface is used as one end surface of a closed container, and an evaporative substance is sealed in the container.
This device utilizes the fact that one end surface of a sealed container buckles and deforms due to changes in internal gas pressure that follow external temperature changes, resulting in a large displacement, resulting in a so-called hysteresis phenomenon, and this is used as a transient measuring device. .
第２図は検出用密閉容器の概略図である。１７
が検出用密閉容器であり、この検出用密閉容器１
７内に検出用封入液体１８が充填される。封入さ
れる液体の種類は検出用密閉容器１７の材料、形
状、寸法により種々選定可能であるが、検出温度
に於て気液平衡が成立するように封入液体と封入
圧力を選定する必要がある。１４は座屈変形する
検出用密閉容器１７の端板である。気液平衡に於
て液体は全て蒸気になろうとするため、検出用密
閉容器１７内の圧力が上昇し、図の如く大変形が
得られる。又、検出後検出用密閉容器１７近傍の
温度が低下すると、検出用密閉容器１７内の蒸気
は凝縮して検出用密閉容器１７内の圧力が低下す
る。この時の検出用密閉容器１７内圧力が周囲の
圧力よりも充分に低い時には再び変形を生じて検
出前の状態へ復帰する。圧力低下が周囲の圧力よ
りもさほど大でないような場合には復帰バネ１５
を使用することも可能である。尚１６はバネおさ
えを示す。第３図は第２図に示される検出用密閉
容器１７端面の中心即ち端板１４の中心点にヒス
テリシス図の一例を示す。点１９は通常使用点で
あり、点２０は警報発信点である。この点で警報
発信用電気スイツチが投入される。また、警報発
信をせず一旦時限リレーに入力、その後警報を発
信する様なスイツチ構成によることも可能であ
り、この場合極めて短期的な異常発熱であり、あ
る時間内に再び正常通電状態に復帰すれば警報は
発信されないことになる。第４図に第２図で説明
した装置をしや断器固定接触子内に組込んだ適用
例を示す。固定接触子９の内部に検出用密閉容器
１７を組込み、その座屈する端面である端板１４
から出るロツド１７ａと絶縁操作ロツド２３、ス
イツチロツド２１、とスイツチ２２が接続されて
いる。絶縁ロツド２３により座屈面の変位をスイ
ツチ２２に伝えると共に充電部と外部を絶縁して
いる。ガスの密閉はシール機構５により成されて
いる。第５図は通電不良により本発明の検出装置
が作動した時の状態を示す。今、通電状態の不良
（図に於ては上部可動接触子８が固定接触子９か
らはなれている）等により異常発熱が発生する
と、検出用密閉容器１７内の検出用封入液体１８
は蒸発し、ガス圧を上昇させて行き、座屈限界圧
力以上になると第３図に示す１９，２０の曲線に
沿つてロツド１７ａがスイツチ２２の方向に変位
し絶縁操作ロツド２３、スイツチロツド２１１を
押し、スイツチ２２を作動させる。スイツチ２２
が作動した状態が第５図に示されている。 FIG. 2 is a schematic diagram of a closed container for detection. 17
is a sealed container for detection, and this sealed container for detection 1
7 is filled with a detection sealed liquid 18. The type of liquid to be sealed can be selected from various types depending on the material, shape, and dimensions of the sealed detection container 17, but it is necessary to select the liquid to be sealed and the sealing pressure so that vapor-liquid equilibrium is established at the detection temperature. . Reference numeral 14 denotes an end plate of the detection sealed container 17 which undergoes buckling deformation. In gas-liquid equilibrium, all the liquid tends to turn into vapor, so the pressure inside the detection sealed container 17 increases, resulting in a large deformation as shown in the figure. Further, when the temperature near the detection sealed container 17 decreases after detection, the steam in the detection sealed container 17 condenses, and the pressure in the detection sealed container 17 decreases. When the internal pressure of the detection sealed container 17 at this time is sufficiently lower than the surrounding pressure, the deformation occurs again and returns to the state before detection. If the pressure drop is not much larger than the surrounding pressure, the return spring 15
It is also possible to use Note that 16 indicates a spring retainer. FIG. 3 shows an example of a hysteresis diagram at the center of the end surface of the detection sealed container 17 shown in FIG. 2, that is, at the center point of the end plate 14. Point 19 is the normal use point, and point 20 is the alarm sending point. At this point, an electrical alarm switch is activated. It is also possible to use a switch configuration that does not issue an alarm, but instead inputs the signal to a timed relay and then issues an alarm. In this case, the abnormal heat generation is extremely short-term, and the power returns to normal within a certain amount of time. Then no warning will be sent. FIG. 4 shows an example of application in which the device explained in FIG. 2 is incorporated into a fixed contact of a shingle breaker. A detection airtight container 17 is installed inside the fixed contact 9, and an end plate 14 is installed as the end surface that buckles.
The rod 17a coming out from the insulating operation rod 23, the switch rod 21, and the switch 22 are connected. The insulating rod 23 transmits the displacement of the buckling surface to the switch 22 and insulates the live part from the outside. Gas sealing is achieved by a sealing mechanism 5. FIG. 5 shows a state in which the detection device of the present invention is activated due to an electrical failure. Now, if abnormal heat generation occurs due to a defect in the energization state (in the figure, the upper movable contact 8 is separated from the fixed contact 9), the sealed liquid 18 in the sealed detection container 17
evaporates, the gas pressure increases, and when the pressure exceeds the buckling limit pressure, the rod 17a is displaced in the direction of the switch 22 along the curves 19 and 20 shown in FIG. Press to activate switch 22. switch 22
The activated state is shown in FIG.
次に本発明の変形例を示す。これまで検出用密
閉容器端面の変位する力により直接連結している
可動ロツドを駆動する形を示したが第６図の様に
駆動することも可能である。ここでは図中矢印Ａ
で示す方向に絶縁操作ロツド２３を駆動する力の
１部をバネ２４に荷している。これは気密用シー
ル条件やロツドの重量等により検出用密閉容器１
７端面がＡ方向に加える力K1では動作困難な場
合に使用するものである。K3＝０の場合、これ
は図４、図５の場合に等しい。この場合、Ａ方向
に動かす力ＦAはＦA＝K1−K2（ここにK2はバネ
１５の力）である。ところがシール等による、移
動を妨げる力ＦSが存在すればＦA＝K1−K2−ＦS
になり、K1＞K2＋ＦSでないとロツドを動かすこ
とは困難である。また、もしＦA＞０であつても
ロツド１７ａ、絶縁操作ロツド２３、スイツチロ
ツド２１の各々の座屈限界荷重の最小値をＰBと
し、ＦA＞ＰBとなればロツドの座屈によりやはり
スイツチ２２を動作させることは困難である。そ
こで、バネ２４を追加する。バネ２４の発する力
をK3とするとＰB＞ＦA＝K1＋K3−K2−ＦSかつ
K2＞K3を満し、かつＢ方向に移動する力をＦBと
して、ＰB＞ＦB＝K1＋K2−K3−ＦSを満す様な値
にK3を選べば絶縁操作ロツド２３、スイツチロ
ツド２１移動とスイツチ２２を作動させることが
可能となる。 Next, a modification of the present invention will be shown. Up to now, we have shown a method in which the directly connected movable rod is driven by the force of displacement of the end face of the closed detection container, but it is also possible to drive it as shown in FIG. Here, arrow A in the figure
A portion of the force for driving the insulated operating rod 23 in the direction indicated by is applied to the spring 24. This is determined by the airtight seal conditions and the weight of the rod.
This is used when it is difficult to operate with the force K 1 applied by the end face in the A direction. If K 3 =0, this is equivalent to the case of FIGS. 4 and 5. In this case, the force F A for moving in the A direction is F A =K 1 -K 2 (here K 2 is the force of the spring 15). However, if there is a force F S that prevents movement due to a seal, etc., then F A = K 1 − K 2 − F S
Therefore, it is difficult to move the rod unless K 1 > K 2 + F S . Furthermore, even if F A >0, the minimum value of the buckling limit load of each of rod 17a, insulation operation rod 23, and switch rod 21 is P B , and if F A > P B , the buckling of the rod will still cause It is difficult to operate switch 22. Therefore, a spring 24 is added. If the force exerted by the spring 24 is K3 , P B > F A = K 1 + K 3 − K 2 − F S and
If K 2 > K 3 is satisfied, and the force moving in the B direction is F B , then K 3 is selected to a value that satisfies P B > F B = K 1 + K 2 − K 3 − F S , and insulation is achieved. It becomes possible to move the operating rod 23 and switch rod 21 and to operate the switch 22.
この他変位量調節および力の大きさの変更のた
めに、一連の動作系内にて〓こ〓を加えることも可能
であり、変位方向を変更するために、リンク機構
を導入することも可能である。さらにラツクとピ
ニヨンや円筒カム機構等の導入により、変位を回
転に変換し、スイツチを作動させることも可能で
あり、多種類のしや断器に最適な条件で装着する
ことが可能である。 In addition, in order to adjust the amount of displacement and change the magnitude of force, it is also possible to add a force within the series of motion systems, and it is also possible to introduce a link mechanism to change the direction of displacement. It is. Furthermore, by introducing a rack and pinion, a cylindrical cam mechanism, etc., it is possible to convert displacement into rotation and operate a switch, making it possible to install it under optimal conditions on a wide variety of shear disconnectors.
他の異常発熱の可能性のある部分、例えば第１
図の導体接触部１３，１３′に本発明の密閉容器
を装着することも可能であると同時に、第１図の
継手１０部の適当なる位置に本装置を装着すれ
ば、２ケ所の異常発熱を検出可能である。これは
継手１０の接触部が金属材料であり、熱伝導性が
良好である点から可能である。 Other areas where abnormal fever may occur, such as the first
It is also possible to attach the airtight container of the present invention to the conductor contact parts 13 and 13' shown in the figure, and at the same time, by attaching this device to an appropriate position of the joint 10 in Fig. 1, it is possible to prevent abnormal heat generation in two places. can be detected. This is possible because the contact portion of the joint 10 is made of a metal material and has good thermal conductivity.
上述の如く本発明の特徴とする点は、電力用し
や断器の通電接触部等の接触異常等による発熱の
可能性が存在し、かつその発熱が長期にわたれば
絶縁破壊等による大事故にも拡大する異常発熱を
測定可能ならしめた点である。これまでこの様な
部分は高圧電圧充電部であるが由に、運転中の温
度測定およびその外部への伝達が困難であつた
が、温度上昇という変化を簡単な装置により機械
的変位に変換し、伝達した点が最重要点であり、
本発明の検出装置を使用することにより、あらか
じめ設定した温度以上の温度を異常として機械的
変位の形で検出できると同時に充電部の温度を直
接検出しているので異常検出が的確で早い。又、
検出される変位が大きく、またその力も大である
為にカム機構やリンク機構を介して種々の形の機
械的変位に変換が可能であり、後に電気的信号に
変換する際の変換器選択の自由度が大きい等の利
点がある。 As mentioned above, the feature of the present invention is that there is a possibility of heat generation due to contact abnormality of the current-carrying contact part of a power switch or disconnector, and if the heat generation continues for a long period of time, a major accident may occur due to insulation breakdown, etc. This makes it possible to measure abnormal heat generation, which is spreading even further. Until now, because these parts were high-voltage charging parts, it was difficult to measure the temperature during operation and to transmit the temperature to the outside, but now a simple device can convert the change in temperature into mechanical displacement. , the points communicated are the most important points,
By using the detection device of the present invention, a temperature higher than a preset temperature can be detected as an abnormality in the form of mechanical displacement, and at the same time, since the temperature of the charging part is directly detected, abnormality detection is accurate and quick. or,
Since the detected displacement is large and its force is large, it can be converted into various forms of mechanical displacement via a cam mechanism or link mechanism, which makes it possible to select a converter when converting it into an electrical signal later. It has advantages such as a large degree of freedom.
以上述べた如く本発明による温度検出装置を用
いることにより、充電部の電気的接触部や消弧に
関与する接触子等が、その動作や経年的な変化に
より接触抵抗の異常な増加をきたし、局部的な発
熱を生じた際に、これを直接的に検出できる為、
従来に比べ高い信頼性を有するしや断器を得るこ
とができる。 As described above, by using the temperature detection device according to the present invention, the electrical contact portion of the live part and the contactor involved in arc extinguishing may cause an abnormal increase in contact resistance due to their operation or changes over time. When localized heat generation occurs, it can be directly detected.
It is possible to obtain a shingle breaker with higher reliability than before.
ここでは直接的には説明しなかつたが、他の変
電機器例えば断路器、接地装置、母線等に対して
も本発明は適用できる。 Although not directly described here, the present invention can also be applied to other substation equipment such as disconnectors, grounding devices, busbars, etc.
第１図は従来の消弧性ガス絶縁形しや断器の断
面図、第２図は本発明に使用する検出用密閉容器
の説明図、第３図は第２図に示した容器の座屈す
る端面の中心の変位と温度の関係図、第４図は本
発明装置装着時の通常使用状態図、第５図は本発
明装置装着時の異常発熱検出中の図、第６図は本
発明の他の実施例を示す断面図である。
１……ブツシング、１′……ブツシング、２…
…導体、２′……導体、３……タンク、４……絶
縁物、５……シール機構、６……操作ロツド、７
……操作ロツド、８……可動接触子、９……固定
接触子、１０……継手、１１……絶縁物のノズ
ル、１２……継手、１３……導体接触部、１３′
……導体接触部、１４……座屈変形する容器端
板、１５……バネ、１６……バネおさえ、１７…
…検出用密封容器、１８……検出用封入液体、１
９……通常使用点、２０……警報発信点、２１…
…スイツチロツド、２２……スイツチ、２３……
絶縁操作ロツド、２４……絶縁性ガス。
Fig. 1 is a sectional view of a conventional arc-extinguishing gas insulated disconnector, Fig. 2 is an explanatory diagram of a sealed container for detection used in the present invention, and Fig. 3 is a seat of the container shown in Fig. 2. A diagram showing the relationship between the displacement of the center of the bending end face and the temperature, FIG. 4 is a diagram showing the normal use state when the device of the present invention is installed, FIG. 5 is a diagram showing abnormal heat generation being detected when the device of the present invention is installed, and FIG. 6 is a diagram of the device according to the present invention. FIG. 3 is a sectional view showing another embodiment of the invention. 1... Butsu sing, 1'... Butsu sing, 2...
...Conductor, 2'...Conductor, 3...Tank, 4...Insulator, 5...Seal mechanism, 6...Operation rod, 7
...Operation rod, 8...Movable contact, 9...Fixed contact, 10...Joint, 11...Insulator nozzle, 12...Joint, 13...Conductor contact portion, 13'
...Conductor contact portion, 14...Container end plate that undergoes buckling deformation, 15...Spring, 16...Spring presser, 17...
...Sealed container for detection, 18... Enclosed liquid for detection, 1
9...Normal use point, 20...Alarm transmission point, 21...
...Switch Rod, 22...Switch, 23...
Insulating operation rod, 24...Insulating gas.
Claims (1)
部を絶縁支持してなる変電機器において、前記充
電部に取付け、内部に蒸発性検出用封入液体を充
填した検出用密閉容器と、この検出用密閉容器の
一端面を形成し、この検出用密閉容器の圧力変動
により変位する端板と、この端部に接続し前記変
位を前記タンク外に伝える絶縁操作ロツドと、こ
の絶縁操作ロツドの変位により動作するスイツチ
とを備えてなることを特徴とする変電機器。 ２ 変位として検出された異常信号が電気的信号
に変換されるに際し、充電部に発生する短期的高
温状態と通電時の接触不良による異常発熱を区別
する限時リレーを備えた特許請求の範囲第１項記
載の変電機器。 ３ 検出用密封容器装置が固定接触子に取付けら
れているしや断器である特許請求の範囲第１項記
載の変電機器。[Scope of Claims] 1. In a substation device in which a live part is insulated and supported in a tank filled with an insulating gas, a detection seal that is attached to the live part and filled with a sealed liquid for evaporative detection. a container, an end plate that forms one end surface of the sealed detection container and is displaced due to pressure fluctuations in the sealed detection container, an insulated operating rod that is connected to this end and transmits the displacement to the outside of the tank; 1. A substation device comprising: a switch operated by displacement of an insulated operating rod. 2. Claim 1 comprising a time-limited relay that distinguishes between a short-term high temperature state that occurs in a live part and abnormal heat generation due to poor contact during energization when an abnormal signal detected as a displacement is converted into an electrical signal. Substation equipment described in Section 1. 3. The substation equipment according to claim 1, wherein the detection sealed container device is a wire breaker attached to a fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3214077A JPS53118770A (en) | 1977-03-25 | 1977-03-25 | Substation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3214077A JPS53118770A (en) | 1977-03-25 | 1977-03-25 | Substation control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS53118770A JPS53118770A (en) | 1978-10-17 |
| JPS6132764B2 true JPS6132764B2 (en) | 1986-07-29 |
Family
ID=12350583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3214077A Granted JPS53118770A (en) | 1977-03-25 | 1977-03-25 | Substation control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS53118770A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59134516A (en) * | 1983-01-20 | 1984-08-02 | 三菱電機株式会社 | On-load tap changer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4881067A (en) * | 1972-02-02 | 1973-10-30 |
-
1977
- 1977-03-25 JP JP3214077A patent/JPS53118770A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4881067A (en) * | 1972-02-02 | 1973-10-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS53118770A (en) | 1978-10-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100391074C (en) | Protection system for protecting three-phase distributing transformer with liquip-dielectric insulating and including phase isolating switch | |
| EP2186107B1 (en) | Circuit breaker with high speed mechanically-interlocked grounding switch | |
| US3983345A (en) | Method of detecting a leak in any one of the vacuum interrupters of a high voltage circuit breaker | |
| EP0092205A2 (en) | Composite circuit breaker | |
| JPH07111855B2 (en) | Tank type circuit breaker | |
| US3114815A (en) | Fluid-blast circuit interrupter with improved current-transformer housing means | |
| US4034264A (en) | Arrangement for detecting a deficient operational capability of a vacuum switching vessel | |
| US3641359A (en) | Monitor circuit for vacuum-type electric circuit interrupter | |
| JPS6132764B2 (en) | ||
| US974109A (en) | Circuit-interrupter. | |
| CN103119677A (en) | Gas-insulated high-voltage switch for interruption of large currents | |
| US3244842A (en) | Circuit interrupter | |
| CN101276702A (en) | Hexafluoride sulphur circuit breaker with heating protecting equipment | |
| US3339037A (en) | High voltage switch construction | |
| GB2030777A (en) | Vacuum-type switching apparatus | |
| US3027439A (en) | High speed electric switch | |
| US3164703A (en) | Circuit interrupter of the single-bushing type with canted terminal-bushing construction | |
| US5023415A (en) | Switch apparatus | |
| US3099724A (en) | Monitor system for circuit interrupters | |
| US3229067A (en) | High voltage gas type circuit interrupter | |
| US3206583A (en) | Safety interlock for gas-filled switch mechanisms | |
| US2546008A (en) | Series-capacitor protective system | |
| JP2672663B2 (en) | Preventive maintenance system | |
| US3524105A (en) | Temperature responsive fault making system for single phase or polyphase transformers | |
| US2456926A (en) | Circuit interrupter |