JPH0529218U - Gas insulated switchgear - Google Patents
Gas insulated switchgearInfo
- Publication number
- JPH0529218U JPH0529218U JP7527991U JP7527991U JPH0529218U JP H0529218 U JPH0529218 U JP H0529218U JP 7527991 U JP7527991 U JP 7527991U JP 7527991 U JP7527991 U JP 7527991U JP H0529218 U JPH0529218 U JP H0529218U
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- Prior art keywords
- cable
- power receiving
- test
- voltage
- main circuit
- 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.)
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Abstract
(57)【要約】
【目的】 現地耐圧試験を簡易且つ迅速に行える構造の
ＧＩＳを提供する。
【構成】 主回路の被試験部位と導通し、装置外部から
試験電圧供給用ケーブルを気密に差し込み得る構造のス
リップオンケーブル引込口１と、装置外部からＯＦケー
ブル（受電ケーブル）を差し込む構造の受電ケーブル引
込口２とを各々主回路の盤面及び受電ユニット１０の盤
面に設けるとともに、スリップオンケーブル引込口１と
被試験部位との間の電路の接続及び遮断を行う第一の電
路遮断機構３と、この第一の電路遮断機構３による電路
の接続又は遮断時に受電ケーブル引込口２と主回路との
間の電路の遮断又は接続を行う第二の電路遮断機構４と
を設け、ＯＦケーブル（受電ケーブル）を差し込んだ状
態で耐圧試験電圧を行える構造とした。
(57) [Summary] [Purpose] To provide a GIS having a structure capable of performing a field withstand voltage test simply and quickly. [Structure] Slip-on cable inlet 1 that is electrically connected to the part under test of the main circuit and that allows a test voltage supply cable to be airtightly inserted from outside the device, and power reception that has an OF cable (power receiving cable) inserted from outside the device A cable entry port 2 is provided on the panel surface of the main circuit and a panel surface of the power receiving unit 10, respectively, and a first electrical path disconnecting mechanism 3 that connects and disconnects the electrical path between the slip-on cable inlet port 1 and the site under test. , The second electric path interruption mechanism 4 for interrupting or connecting the electric path between the power receiving cable inlet 2 and the main circuit at the time of connection or interruption of the electric path by the first electric path interruption mechanism 3 is provided. The structure is such that the withstand voltage test voltage can be applied with the cable inserted.
Description
【０００１】[0001]
本考案はＳＦ6ガスを封入した主回路を有するガス絶縁開閉装置（以下ＧＩＳ と称する）に係り、特に、主回路の現地耐圧試験時に必要な架空ブッシングを持 たない構造のガス絶縁開閉装置に関する。The present invention relates to a gas-insulated switchgear having a main circuit filled with SF 6 gas (hereinafter referred to as GIS), and more particularly to a gas-insulated switchgear having a structure that does not have an overhead bushing necessary for a local withstand voltage test of the main circuit. ..
【０００２】[0002]
従来、ＧＩＳ主回路の現地耐圧試験を行う場合、架空ブッシング部分の無いＧ ＩＳでは、耐圧試験用ブッシングをその都度ＧＩＳに接続し、耐圧試験器から被 試験部位に耐圧試験電圧を印加することが行われている。 Conventionally, when conducting a field withstand voltage test of a GIS main circuit, in a GIS without an aerial bushing part, a withstand voltage test bushing may be connected to the GIS each time and a withstand voltage test voltage may be applied from the withstand voltage tester to the part under test. Has been done.
【０００３】[0003]
しかしながら、耐圧試験用ブッシングを接続して耐圧試験を行おうとすると、 その接続時にガス処理（ガス抜き、ガス入れ、以下同じ）を必要とし、しかも、 試験終了後ブッシングを取り外すときにもガス処理が必要となる。このように、 通産検査受検等のときに一工程毎にガス処理を行うことは、非常に多くの時間と 費用を要するため、強く改善が望まれていた。 However, if a pressure resistance test bushing is connected and a pressure resistance test is to be performed, gas treatment (gas venting, gas charging, the same applies hereinafter) is required at the time of connection, and gas treatment is also required when the bushing is removed after the test is completed. Will be needed. As described above, performing gas treatment for each process at the time of receiving an inspection of a childbirth inspection requires a great deal of time and cost, and therefore, a strong improvement has been desired.
【０００４】 また、屋内変電所設備の場合は、耐圧試験用ブッシングを設置すると多くのス ペースを要し、更に、機器配置上、耐圧試験電圧印加用電線の引き回し等を考慮 しなければならない問題があった。このスペースは電圧階級が高くなるほど大き くなり、せっかくＧＩＳを用いることで省スペース化を図っても、その効果を十 分に発揮することができない問題があった。Further, in the case of indoor substation equipment, installing a withstanding voltage test bushing requires a large amount of space, and in addition to the equipment layout, it is necessary to consider the wiring of the withstand voltage test voltage application wire. was there. This space becomes larger as the voltage class becomes higher, and there is a problem that even if the space is saved by using GIS, the effect cannot be fully exerted.
【０００５】 本考案は、かかる問題点を解決するためになされたもので、その目的とすると ころは、耐圧試験を簡易且つ迅速に行えるとともに、主回路をより高密度に配置 することができる構造のＧＩＳを提供することにある。The present invention has been made in order to solve such a problem, and an object thereof is to provide a structure capable of performing a withstand voltage test simply and quickly and arranging main circuits in a higher density. To provide the GIS of.
【０００６】[0006]
上記目的を達成するための本考案の構成は、主回路の被試験部位に耐圧試験電 圧を供給するための試験電圧受電部と、耐圧試験後は主回路に動作電圧を供給す るための受電ユニットとを有するガス絶縁開閉装置において、前記被試験部位と 導通するスリップオンケーブル引込口を前記試験電圧受電部の盤面に設け、試験 電圧供給用ケーブルを装置外部から前記引込口に気密に差し込み得るようにした ことを特徴とする。 The configuration of the present invention to achieve the above object is to provide a test voltage receiving section for supplying a withstand voltage test voltage to a portion under test of a main circuit, and an operating voltage for supplying a main circuit after the withstand voltage test. In a gas-insulated switchgear that has a power receiving unit, a slip-on cable lead-in port that conducts electricity to the part under test is provided on the panel surface of the test voltage receiving unit, and a test voltage supply cable is plugged into the lead-in port from outside the device. It is characterized by having been obtained.
【０００７】 また、本考案の他の構成は、前記被試験部位と導通し装置外部から試験電圧供 給用ケーブルを気密に差し込み得る構造のスリップオンケーブル引込口を前記試 験電圧受電部の盤面に設けるとともに、装置外部から動作電圧供給用受電ケーブ ルを差し込む構造の受電ケーブル引込口を前記受電ユニットの盤面に設け、更に 、前記スリップオンケーブル引込口と前記被試験部位との間の電路の接続及び遮 断を行う第一の電路遮断機構と、この第一の電路遮断機構による電路の接続又は 遮断時に前記受電ケーブル引込口と主回路との間の電路の遮断又は接続を行う第 二の電路遮断機構とを具備したことを特徴とする。In addition, according to another configuration of the present invention, a slip-on cable lead-in port having a structure that is electrically connected to the portion to be tested so that a test voltage supply cable can be airtightly inserted from the outside of the device is a board surface of the test voltage receiving unit. In addition to the above, a power receiving cable inlet with a structure for inserting a power receiving cable for operating voltage supply from outside the device is provided on the panel surface of the power receiving unit, and further, the electrical path between the slip-on cable inlet and the site under test is The first circuit breaker that connects and disconnects, and the second circuit that breaks or connects the circuit between the power receiving cable inlet and the main circuit when the circuit is connected or disconnected by this first circuit breaker. And a circuit breaker.
【０００８】[0008]
スリップオンケーブル引込口は、繰り返しの抜き差しが可能で、且つ試験電圧 供給用ケーブルを抜いた状態でもＧＩＳ内部のガス漏れを生じさせない端末なの で、試験時に別途ガス処理を行う必要がなくなる。 The slip-on cable inlet is a terminal that can be repeatedly inserted and removed, and does not cause gas leakage inside the GIS even when the test voltage supply cable is disconnected, so there is no need to perform additional gas treatment during testing.
【０００９】 また、第一の電路遮断機構でスリップオンケーブル引込口の電路を接続すると きは、第二の電路遮断機構が受電ケーブル引込口の電路を遮断するとともに、第 二の電路遮断機構で受電ケーブル引込口の電路を接続するときは、第一の電路遮 断機構でスリップオンケーブル引込口の電路を遮断するので、耐圧試験電圧と動 作電圧とがＧＩＳの主回路に分離供給される。When the slip-on cable lead-in port is connected by the first electric line breaking mechanism, the second electric line breaking mechanism cuts off the electric line of the power receiving cable drawing port, and the second electric line breaking mechanism is used. When connecting the electrical path of the incoming cable inlet, the first electrical path blocking mechanism shuts off the electrical path of the slip-on cable inlet, so that the withstand voltage test voltage and operating voltage are supplied separately to the GIS main circuit. ..
【００１０】[0010]
【実施例】 以下、図面を参照して本考案の実施例を説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】 （第一実施例） 図１は本考案の第一実施例に係るＧＩＳの部分構造図であり、１０は受電ユニ ット、１１は接地形計器用変圧器（ＧＰＴ）、１２は受電用交流遮断器、１３は 接地抵抗付遮断器（ＥＤＳ）を表す。受電ユニット１０及びＧＰＴ１１には約３ ［ｋｇｆ／ｃｍ2］の絶縁ガスが封入されており、受電用交流遮断器１２及びＥ ＤＳ１３入力部には約１.３［ｋｇｆ／ｃｍ2］の絶縁ガスが封入されている。First Embodiment FIG. 1 is a partial structural view of a GIS according to a first embodiment of the present invention, in which 10 is a power receiving unit, 11 is a ground type instrument transformer (GPT), and 12 is AC breaker for power reception, 13 is a breaker with ground resistance (EDS). The power receiving unit 10 and the GPT 11 are filled with about 3 [kgf / cm 2 ] of insulating gas, and the input AC breaker 12 and the input part of the EDS 13 are about 1.3 [kgf / cm 2 ] of insulating gas. Is enclosed.
【００１２】 受電ユニット１０は、ＧＰＴ１１、受電用交流遮断器１２、ＥＤＳ１３を含ん で構成される主回路に通常動作用の三相交流電圧を給電するためのもので、その 盤面には、ＧＩＳの動作電圧を供給するための受電ケーブル（ＯＦケーブル）引 込口２が設けられている。また、受電用交流遮断器１２の盤面には、被試験部位 と導通する耐圧試験専用のスリップオンケーブル引込口１が設けられている。The power receiving unit 10 is for supplying a three-phase AC voltage for normal operation to a main circuit including a GPT 11, a power receiving AC circuit breaker 12, and an EDS 13, and has a GIS on the board surface. A power receiving cable (OF cable) inlet 2 for supplying an operating voltage is provided. Further, a slip-on cable lead-in port 1 dedicated to a withstand voltage test is provided on the panel surface of the power receiving AC circuit breaker 12 so as to be electrically connected to the site under test.
【００１３】 通常時には受電ケーブル引込口２にＯＦケーブルが接続され、スリップオンケ ーブル引込口１は受電用交流遮断器１２内の絶縁ガスを封止している。また、現 地耐圧試験時には図示を省略した耐圧試験器からの試験電圧供給用ケーブルをス リップオンケーブル引込口１に導き、この引込口１に気密に差し込む。In normal times, an OF cable is connected to the power receiving cable inlet 2, and the slip-on cable inlet 1 seals the insulating gas in the power receiving AC breaker 12. During the local withstand voltage test, the test voltage supply cable from a withstand voltage tester (not shown) is guided to the slip-on cable inlet 1 and is hermetically inserted into the inlet 1.
【００１４】 スリップオンケーブル引込口１は、繰り返しの抜き差しが可能で、且つ試験電 圧供給用ケーブルを抜いた状態でもＧＩＳ内部のガス漏れを生じさせない端末な ので、これにより、現地耐圧試験時における工程毎のガス処理を行う必要がなく なる。The slip-on cable inlet 1 is a terminal that can be repeatedly inserted and removed, and does not cause gas leakage inside the GIS even when the test voltage supply cable is removed. There is no need to perform gas treatment for each process.
【００１５】 また、耐圧試験器からスリップオンケーブル引込口１に試験電圧供給用ケーブ ルを直接導くので、従来のように、架空電線で引き回す際に必要であった機器配 置上の考慮や余分なスペースが不要となり、ＧＩＳ内の主回路を高密度に配置す ることができる。Further, since the cable for supplying the test voltage is directly guided from the withstand voltage tester to the slip-on cable lead-in port 1, it is necessary to take into consideration the equipment layout and extra space required when the cable is routed by an overhead wire as in the past. This eliminates the need for a large space and allows the main circuits in the GIS to be arranged at high density.
【００１６】 なお、図１ではスリップオンケーブル引込口１を受電用交流遮断器１２の盤面 に設けた様子を示しているが、主回路の被試験部位と導通する受電口近傍の盤面 であれば、図示以外の部位にスリップオンケーブル引込口１を設けることもでき る。Although FIG. 1 shows the slip-on cable lead-in port 1 provided on the panel surface of the AC breaker 12 for power reception, if it is the panel surface near the power reception port that is in continuity with the part under test of the main circuit. It is also possible to provide the slip-on cable lead-in port 1 at a portion other than that shown in the figure.
【００１７】 （第二実施例） 図２は本考案の第二実施例に係るＧＩＳの内部単線結線図である。この図に示 すように、本考案の第二実施例は、上記第一実施例において、スリップオンケー ブル引込口１と被試験部位との間の電路の接続及び遮断を行う第一の電路遮断機 構３と、この第一の電路遮断機構３による電路の接続又は遮断時に受電ケーブル 引込口２と主回路との間の電路の遮断又は接続を行う第二の電路遮断機構４とを 各相毎に設けたものである。Second Embodiment FIG. 2 is an internal single wire connection diagram of the GIS according to the second embodiment of the present invention. As shown in this figure, the second embodiment of the present invention is the same as the first embodiment, except that the first electric circuit for connecting and disconnecting the electric circuit between the slip-on cable inlet 1 and the portion under test is connected. Each of the circuit breaker mechanism 3 and the second circuit breaker mechanism 4 that blocks or connects the circuit between the power receiving cable inlet 2 and the main circuit when the first circuit breaker 3 connects or blocks the circuit. It is provided for each phase.
【００１８】 これは、スリップオンケーブル引込口１に盲栓（メス）を施すことで、耐圧試 験以外のときでも常時使用が可能であるが、盲栓のみをして永久設備とすること は、常時加圧状態となるので好ましくなく、しかも、耐圧試験時には受電ユニッ ト１０からその都度ＯＦケーブルを引き抜く煩わしさがある（ガス処理が必要に なる）ことによる。It is possible to use the slip-on cable lead-in port 1 with a blind plug (female) at any time other than the pressure resistance test, but it is possible to use the blind plug alone as a permanent facility. However, it is not preferable because the pressure is always applied, and it is troublesome to pull out the OF cable from the power receiving unit 10 each time during the withstand voltage test (gas treatment is required).
【００１９】 ＧＩＳを図２のような構造にすると、第一の電路遮断機構３でスリップオンケ ーブル引込口１の電路を接続するときは、第二の電路遮断機構４が受電ケーブル 引込口２の電路を遮断するとともに、第二の電路遮断機構４で受電ケーブル引込 口２の電路を接続するときは、第一の電路遮断機構３でスリップオンケーブル引 込口１の電路を遮断するので、耐圧試験電圧と動作電圧とが主回路に分離供給さ れる。したがって、受電ケーブル引込口２に耐圧試験電圧が廻り込むことがなく 、また、通常動作時にはスリップオンケーブル引込口１が無加圧状態となる。When the GIS has a structure as shown in FIG. 2, when the electric path of the slip-on cable lead-in port 1 is connected by the first electric line-breaking mechanism 3, the second electric line-breaking mechanism 4 causes the receiving cable lead-in port 2 to connect. When the second electric path interruption mechanism 4 connects the electric path of the power receiving cable inlet 2 with the second electric path interrupting mechanism 4, the first electric path interrupting mechanism 3 interrupts the electric path of the slip-on cable inlet 1. The withstand voltage test voltage and the operating voltage are separately supplied to the main circuit. Therefore, the withstand voltage test voltage does not sneak into the power receiving cable lead-in port 2, and the slip-on cable lead-in port 1 is not pressurized during normal operation.
【００２０】 これにより、ＯＦケーブルを受電ケーブル引込口２に差し込んだ状態で耐圧試 験を行うことができ、通産検査時等の所要時間が短縮されるとともに、通常動作 時のスリップオンケーブル引込口１の安全性を確保することができる。As a result, the withstand voltage test can be performed with the OF cable plugged into the power receiving cable entry port 2, and the time required for a midwifery inspection can be shortened and the slip-on cable entry port during normal operation can be reduced. The safety of 1 can be secured.
【００２１】 なお、図２において、５は直流耐電圧印加部を示す。これはケーブル等の耐圧 試験を行うためのＤＣ１０［ｋＶ］程度の電圧の印加部であり、三相交流電圧を 供給するスリップオンケーブル引込口１からこれを引き込んで印加することも可 能であるが、当該印加部５を設けることで直流電圧の印加がより簡易になるため に設けられてる。In FIG. 2, reference numeral 5 indicates a DC withstand voltage applying section. This is a DC 10 [kV] voltage application section for conducting a withstand voltage test on cables, etc. It is also possible to apply this by drawing in from the slip-on cable inlet 1 that supplies a three-phase AC voltage. However, it is provided because the application of the DC voltage becomes easier by providing the applying unit 5.
【００２２】[0022]
以上説明してきたように、本考案のＧＩＳは、耐圧試験専用のスリップオンケ ーブル引込口を設けたので、現地耐圧試験時のガス処理が不要になり、試験を簡 易且つ迅速に行えるとともに、ＧＩＳの主回路配置をより高密度にすることがで きる効果がある。 As described above, the GIS of the present invention is provided with the slip-on cable inlet for the pressure resistance test only. Therefore, gas treatment at the time of the local pressure resistance test is unnecessary, and the test can be performed easily and quickly. There is an effect that the main circuit arrangement of the GIS can be made higher in density.
【００２３】 また、スリップオンケーブル引込口と被試験部位との間の電路の接続及び遮断 を行う第一の電路遮断機構と、この第一の電路遮断機構による電路の接続又は遮 断時に受電ケーブル引込口と主回路との間の電路の遮断又は接続を行う第二の電 路遮断機構とを設けたので、耐圧試験時に主回路構成を変える必要がなくなり、 試験に要する時間を大幅に短縮することができる効果がある。Further, a first electric circuit breaking mechanism for connecting and disconnecting the electric circuit between the slip-on cable inlet and the site under test, and a power receiving cable when the electric circuit is connected or cut off by the first circuit breaking mechanism. Since a second circuit disconnecting mechanism that disconnects or connects the circuit between the inlet and the main circuit is provided, it is not necessary to change the main circuit configuration during the withstand voltage test, and the time required for the test is greatly reduced. There is an effect that can be.
【００２４】 したがって、本考案により、現地耐圧試験を簡易且つ迅速に行うことができ、 しかも内部主回路の配置をより高密度にし得る構造のＧＩＳを提供することがで きる。Therefore, according to the present invention, it is possible to provide a GIS having a structure in which the on-site withstand voltage test can be easily and quickly performed and the internal main circuits can be arranged at a higher density.
【図１】本考案の第一実施例に係るＧＩＳの部分構造
図、FIG. 1 is a partial structural view of a GIS according to a first embodiment of the present invention,
【図２】本考案の第二実施例に係るＧＩＳの内部単線結
線図。FIG. 2 is an internal single wire connection diagram of the GIS according to the second embodiment of the present invention.
１…スリップオンケーブル引込口、２…受電ケーブル引
込口、３，４…電路遮断機構、１０…受電ユニット、１
１…ＧＰＴ、１２…受電用交流遮断器、１３…ＥＤＳ。DESCRIPTION OF SYMBOLS 1 ... Slip-on cable entry port, 2 ... Power receiving cable entry port, 3, 4 ... Electrical path interruption mechanism, 10 ... Power receiving unit, 1
1 ... GPT, 12 ... Power receiving AC circuit breaker, 13 ... EDS.
Claims (2)
給するための試験電圧受電部と、耐圧試験後は主回路に
動作電圧を供給するための受電ユニットとを有するガス
絶縁開閉装置において、 前記被試験部位と導通するスリップオンケーブル引込口
を前記試験電圧受電部の盤面に設け、試験電圧供給用ケ
ーブルを装置外部から前記引込口に気密に差し込み得る
ようにしたことを特徴とするガス絶縁開閉装置。1. A gas insulated switchgear having a test voltage power receiving section for supplying a withstand voltage test voltage to a portion under test of a main circuit and a power receiving unit for supplying an operating voltage to the main circuit after the withstand voltage test. The gas, characterized in that a slip-on cable lead-in port that is in continuity with the portion to be tested is provided on the panel surface of the test voltage power receiving unit, and a test voltage supply cable can be airtightly inserted into the lead-in port from outside the device. Insulation switchgear.
給するための試験電圧受電部と、耐圧試験後は主回路に
動作電圧を供給するための受電ユニットとを有するガス
絶縁開閉装置において、 前記被試験部位と導通し装置外部から試験電圧供給用ケ
ーブルを気密に差し込み得る構造のスリップオンケーブ
ル引込口を前記試験電圧受電部の盤面に設けるととも
に、装置外部から動作電圧供給用受電ケーブルを差し込
む構造の受電ケーブル引込口を前記受電ユニットの盤面
に設け、更に、前記スリップオンケーブル引込口と前記
被試験部位との間の電路の接続及び遮断を行う第一の電
路遮断機構と、この第一の電路遮断機構による電路の接
続又は遮断時に前記受電ケーブル引込口と主回路との間
の電路の遮断又は接続を行う第二の電路遮断機構とを具
備したことを特徴とするガス絶縁開閉装置。2. A gas insulated switchgear having a test voltage power receiving section for supplying a withstand voltage test voltage to a portion under test of a main circuit, and a power receiving unit for supplying an operating voltage to the main circuit after the withstand voltage test. While providing a slip-on cable lead-in port that is electrically connected to the part to be tested from the outside of the device and that allows a test voltage supply cable to be airtightly inserted from the outside of the device, a power receiving cable for operating voltage supply from outside the device is provided. A power receiving cable inlet having a structure for inserting is provided on a panel surface of the power receiving unit, and further, a first electric path disconnecting mechanism for connecting and disconnecting an electric path between the slip-on cable inlet and the portion under test, A second electric circuit interruption mechanism that interrupts or connects the electric path between the power receiving cable inlet and the main circuit when the electric path is connected or interrupted by the first electric circuit interruption mechanism; Gas-insulated switchgear apparatus characterized by equipped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075279U JP2527777Y2 (en) | 1991-09-19 | 1991-09-19 | Gas insulated switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991075279U JP2527777Y2 (en) | 1991-09-19 | 1991-09-19 | Gas insulated switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0529218U true JPH0529218U (en) | 1993-04-16 |
| JP2527777Y2 JP2527777Y2 (en) | 1997-03-05 |
Family
ID=13571635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991075279U Expired - Lifetime JP2527777Y2 (en) | 1991-09-19 | 1991-09-19 | Gas insulated switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2527777Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636314U (en) * | 1992-10-05 | 1994-05-13 | 日新電機株式会社 | Gas insulated switchgear |
| KR101444921B1 (en) * | 2013-11-19 | 2014-09-26 | (주)와이즈산전 | APPARATUS AND METHOD FOR test of instant pressure rise detecting switch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122409U (en) * | 1986-01-27 | 1987-08-04 |
-
1991
- 1991-09-19 JP JP1991075279U patent/JP2527777Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62122409U (en) * | 1986-01-27 | 1987-08-04 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0636314U (en) * | 1992-10-05 | 1994-05-13 | 日新電機株式会社 | Gas insulated switchgear |
| KR101444921B1 (en) * | 2013-11-19 | 2014-09-26 | (주)와이즈산전 | APPARATUS AND METHOD FOR test of instant pressure rise detecting switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2527777Y2 (en) | 1997-03-05 |
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