JP2010087045A - Transformer for gas insulated meter - Google Patents

Transformer for gas insulated meter Download PDF

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JP2010087045A
JP2010087045A JP2008251754A JP2008251754A JP2010087045A JP 2010087045 A JP2010087045 A JP 2010087045A JP 2008251754 A JP2008251754 A JP 2008251754A JP 2008251754 A JP2008251754 A JP 2008251754A JP 2010087045 A JP2010087045 A JP 2010087045A
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voltage
voltage terminal
connection conductor
gas
conductor
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Shuichiro Abe
秀一郎 阿部
Masahito Aoyanagi
雅人 青柳
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Nissin Electric Co Ltd
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Nissin Electric Co Ltd
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Priority to JP2008251754A priority Critical patent/JP2010087045A/en
Priority to CN200910135493A priority patent/CN101714447A/en
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  • Transformers For Measuring Instruments (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To connect and separate a voltage transforming element and a high-voltage circuit to and from each other with small operating power so as to solve a problem in which a gas VT with a simple disconnecting device for connecting to and separating form the high-voltage circuit requires large power for displacing operation and becomes large in size. <P>SOLUTION: The transformer for gas insulated meter includes a high-voltage terminal 31 connected to a single-phase AC high-voltage conductor, the voltage transforming element 41 disposed on the same axis as the high-voltage terminal 31, a connection conductor 32 connected to the voltage transforming element 41 and arranged movably in a direction facing the high-voltage terminal 31, and a driving section 40 which moves the connection conductor 32 in the direction facing the high-voltage terminal 31 to make the connection conductor 32 contact or leave the high-voltage terminal 31. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、ガス絶縁計器用変圧器に関する。   The present invention relates to a transformer for gas insulated instruments.

ガス絶縁計器用変圧器（以下、「ガスＶＴ」と言う。）は、ガス絶縁開閉装置（以下「ＧＩＳ」と言う。）に接続して高圧回路の電圧変成を行うが、ＧＩＳの直流及び交流耐電圧試験時等には、高圧回路から切離す必要がある。   A transformer for gas insulated instruments (hereinafter referred to as “gas VT”) is connected to a gas insulated switchgear (hereinafter referred to as “GIS”) for voltage transformation of a high voltage circuit. It is necessary to disconnect from the high voltage circuit during a withstand voltage test.

ガスＶＴは、ＧＩＳに取付けられて使用するものであるが、ＧＩＳにガスＶＴを取付けた状態で、ＧＩＳのＡＣ耐電圧試験をしようとするとガスＶＴの鉄芯が磁気飽和し、一次コイルを焼損する危険がある。そのため、ＧＩＳ側に断路器を設け、ＧＩＳのＡＣ耐電圧試験時にガスＶＴを切離し、又は、試験としてＡＣ耐電圧を印加しても鉄芯が磁気飽和しないようにガスＶＴの鉄芯を大きくする必要がある。   The gas VT is used by being attached to the GIS. However, when an attempt is made to perform an AC withstand voltage test of the GIS with the gas VT attached to the GIS, the iron core of the gas VT is magnetically saturated and the primary coil is burned out. There is a danger to do. Therefore, a disconnector is provided on the GIS side, and the gas VT is disconnected during the GIS AC withstand voltage test, or the iron core of the gas VT is enlarged so that the iron core is not magnetically saturated even when an AC withstand voltage is applied as a test. There is a need.

しかし、ＧＩＳへの断路器の設置は、コストアップにつながり、ガスＶＴに磁気飽和しない鉄芯を採用することは、ガスＶＴが大きくなりＧＩＳ自体を大きくしてしまうこと及びＶＴ自体のコストアップにつながる。そのため、簡易断路装置を有するガスＶＴ（以下、「簡易断路装置付ガスＶＴ」と記載する）が提案されている（下記特許文献１）。
以下に、図５を用いて、提案されている簡易断路装置付ガスＶＴを説明する。図５は、簡易断路装置付ガスＶＴの内部構造を示す側面図である。容器１０１内には、絶縁ガスが充填されており、絶縁スペーサ１１２や容器カバー１１０等により密閉されている。容器１０１内に導入された高圧導体１０２の端部には、高圧端子１０３が設けられ、電圧変成要素１１１の高圧側端部の接続導体１０４に対向して配置される。 However, the installation of the disconnector in the GIS leads to an increase in cost, and adopting an iron core that is not magnetically saturated in the gas VT increases the gas VT and enlarges the GIS itself, and increases the cost of the VT itself. Connected. For this reason, a gas VT having a simple disconnection device (hereinafter referred to as “gas VT with a simple disconnection device”) has been proposed (Patent Document 1 below).
Below, the proposed gas VT with a simple disconnection device will be described with reference to FIG. FIG. 5 is a side view showing the internal structure of the gas VT with the simple disconnection device. The container 101 is filled with an insulating gas and is sealed with an insulating spacer 112, a container cover 110, and the like. A high voltage terminal 103 is provided at an end portion of the high voltage conductor 102 introduced into the container 101, and is disposed to face the connection conductor 104 at the high voltage side end portion of the voltage transformation element 111.

電圧変成要素１１１は、一次コイル１０５、二次コイル１０６、及び鉄芯１０７から構成される。上記のように、電圧変成要素１１１は、高圧導体１０２に対向して配置されるため、高圧導体１０２との接続又は開離は、容器１０１の長手方向に接続導体１０４及び電圧変成要素１１１を移動することで行う。可動板１０９は、電圧変成要素１１１に連結されている。可動板１０９に連結した操作装置１１３は、可動板１０９と連結した電圧変成要素１１１を移動するために、歯車等の動力伝達機構や、モータ等の動力源を有する。そして、操作装置１１３は、可動板１０９を長手方向に移動させることで、接続導体１０４とを高圧端子１０３と接続又は開離させることができる。   The voltage transformation element 111 includes a primary coil 105, a secondary coil 106, and an iron core 107. As described above, since the voltage transformation element 111 is disposed opposite to the high voltage conductor 102, connection or disconnection with the high voltage conductor 102 moves the connection conductor 104 and the voltage transformation element 111 in the longitudinal direction of the container 101. To do. The movable plate 109 is connected to the voltage transforming element 111. The operation device 113 connected to the movable plate 109 has a power transmission mechanism such as a gear and a power source such as a motor in order to move the voltage transformation element 111 connected to the movable plate 109. Then, the operating device 113 can connect or disconnect the connection conductor 104 to or from the high-voltage terminal 103 by moving the movable plate 109 in the longitudinal direction.

しかしながら、上記した簡易断路装置付ガスＶＴは、重い電圧変成要素を接続又は開離するために大きな動作力を必要とする。また、高圧回路の電圧が高くなってくると、電圧変成要素も電圧に従って大型化するため、必要な動作力も大きくなる。そのため、大きな動作力を生成するために、操作装置１１３はより大型化及び重量化する。   However, the gas VT with the simple disconnection device described above requires a large operating force in order to connect or disconnect the heavy voltage transformation element. Further, as the voltage of the high voltage circuit increases, the voltage transforming element also increases in size according to the voltage, so that the required operating force increases. Therefore, in order to generate a large operating force, the operating device 113 is further increased in size and weight.

特開２００４−５５７４０号公報JP 2004-55740 A

本発明は、小さな動作力で、電圧変成要素と高圧回路とを接続又は開離することを可能にする簡易断路装置付ガスＶＴを提供することを目的とする。   An object of the present invention is to provide a gas VT with a simple disconnection device that makes it possible to connect or disconnect a voltage transformation element and a high voltage circuit with a small operating force.

上記課題を解決するために、単相交流の高圧導体に接続した高圧端子と、上記高圧端子と同一の軸上に配置された電圧変成要素と、上記電圧変成要素に接続され、且つ上記高圧端子に配置し対向方向に移動できる接続導体と、上記高圧端子に対して対向方向に上記接続導体を移動させて、上記接続導体に接触又は開離させる駆動部と、を備えるガス絶縁計器用変圧器を提供する。   In order to solve the above problems, a high-voltage terminal connected to a single-phase AC high-voltage conductor, a voltage transformation element disposed on the same axis as the high-voltage terminal, and the high-voltage terminal connected to the voltage transformation element A transformer for a gas insulated instrument comprising: a connecting conductor that is arranged in a movable direction and moves in a facing direction; and a drive unit that moves the connecting conductor in a facing direction with respect to the high-voltage terminal and contacts or separates the connecting conductor. I will provide a.

上記ガス絶縁計器用変圧器は、小さな動作力で、電圧変成要素と高圧回路とを接続又は開離することを可能にする。   The gas insulated instrument transformer makes it possible to connect or disconnect the voltage transformer element and the high voltage circuit with a small operating force.

以下、本発明に係る簡易断路装置付ガスＶＴの一実施形態について、図１〜３を参照して説明する。   Hereinafter, an embodiment of the gas VT with a simple disconnection device according to the present invention will be described with reference to FIGS.

図１を用いて、簡易断路装置付ガスＶＴ２０の内部構造の一例について説明する。図１（ａ）は、接続導体及び高圧端子が互いに接続されている状態（以下、「オン状態」と言う。）を示し、図１（ｂ）は、接続導体３２及び高圧端子３１が開離した状態（以下、「オフ状態」と言う。）を示す。   An example of the internal structure of the gas VT20 with a simple disconnection device will be described with reference to FIG. FIG. 1A shows a state where the connection conductor and the high voltage terminal are connected to each other (hereinafter referred to as “on state”), and FIG. 1B shows that the connection conductor 32 and the high voltage terminal 31 are separated. (Hereinafter referred to as “off state”).

簡易断路装置付ガスＶＴ２０は、図示のように、一次コイル２１、二次コイル２２、電界緩和シールド２３、３３、鉄芯２４、鉄芯固定金具２５、容器底板２６、容器２７、絶縁スペーサ２８、ＧＩＳ接続用導体２８ａ、取付フランジ２９、高圧導体３０、高圧端子３１、接続導体３２、絶縁操作棒３４、回転操作棒３５、取付板３６、回転機構部３７、及び操作ハンドル３８を有する。簡易断路装置付ガスＶＴ２０は、取付フランジ２９を介してＧＩＳと結合され、ＧＩＳ接続用導体２８ａを介して高圧導体３０は単相高圧回路と電気的に接続される。絶縁操作棒３４、回転操作棒３５、取付板３６、回転機構部３７、操作ハンドル３８は駆動部４０を構成して、接続導体３２を昇降する。また、駆動部４０は、図示のように、簡易断路装置付きＶＴ２０の側部に備えられる。電圧変成要素４１は、鉄芯２４の上に二次コイル２２を巻き、さらにその外側に一次コイル２１を巻いた構成を有する。なお、図示のように、電圧変成要素４１は、高圧端子３１及び接続導体３２と同一の軸上に配置される。   As shown in the figure, the gas VT20 with a simple disconnection device includes a primary coil 21, a secondary coil 22, electric field relaxation shields 23 and 33, an iron core 24, an iron core fixing bracket 25, a container bottom plate 26, a container 27, an insulating spacer 28, It has a GIS connection conductor 28a, a mounting flange 29, a high voltage conductor 30, a high voltage terminal 31, a connection conductor 32, an insulation operation bar 34, a rotation operation bar 35, a mounting plate 36, a rotation mechanism 37, and an operation handle 38. The gas VT20 with a simple disconnection device is coupled to the GIS via the mounting flange 29, and the high voltage conductor 30 is electrically connected to the single-phase high voltage circuit via the GIS connection conductor 28a. The insulating operation rod 34, the rotation operation rod 35, the mounting plate 36, the rotation mechanism unit 37, and the operation handle 38 constitute a drive unit 40, which moves the connection conductor 32 up and down. Moreover, the drive part 40 is provided in the side part of VT20 with a simple disconnection apparatus like illustration. The voltage converting element 41 has a configuration in which the secondary coil 22 is wound on the iron core 24 and the primary coil 21 is wound on the outer side thereof. As illustrated, the voltage transformation element 41 is disposed on the same axis as the high-voltage terminal 31 and the connection conductor 32.

高圧導体３０は、絶縁スペーサ２８に接続されており、絶縁スペーサ２８はＳＦ６等の絶縁ガスが充填されている容器２７に気密接続されている。容器２７内において、高圧導体３０の先端には、高圧端子３１が取り付けられている。高圧端子３１には、内部にバネ（図示省略）が設けてあり高圧端子３１は容器２７の長手方向に移動し、かつ、そのバネの力で高圧端子３１と接続する接続導体３２との接触圧を保持している。 High pressure conductor 30 is connected to the insulating spacer 28, an insulating spacer 28 is hermetically connected to the container 27 insulation gas such as SF 6 is filled. In the container 27, a high voltage terminal 31 is attached to the tip of the high voltage conductor 30. The high voltage terminal 31 is provided with a spring (not shown), and the high voltage terminal 31 moves in the longitudinal direction of the container 27, and the contact pressure with the connection conductor 32 connected to the high voltage terminal 31 by the force of the spring. Holding.

一次コイル２１は、余長を持たせた電線３９（後述）を介して接続導体３２と電気的に接続されている。そのため、一次コイル２１に流れる高圧電流により鉄芯２４内に生じる磁束変化によって、二次コイル２２に誘導起電力が生じる。このようにして、一次コイル２１の高電圧は、二次コイル２２内で変圧される。   The primary coil 21 is electrically connected to the connection conductor 32 via an electric wire 39 (described later) having a surplus length. Therefore, an induced electromotive force is generated in the secondary coil 22 due to a change in magnetic flux generated in the iron core 24 due to the high-voltage current flowing in the primary coil 21. In this way, the high voltage of the primary coil 21 is transformed in the secondary coil 22.

鉄芯固定金具２５は、鉄芯２４を容器底板２６に固定する。回転機構部３７は、容器２７に取付板３６で固定された回転操作棒３５を介して、操作ハンドル３８の回転動作により生じた駆動力を絶縁操作棒３４に伝達することにより、絶縁操作棒３４を昇降することができる。接続導体３２は、絶縁操作棒３４に固定されているため、絶縁操作棒３４の昇降動作と共に昇降する。   The iron core fixing bracket 25 fixes the iron core 24 to the container bottom plate 26. The rotation mechanism portion 37 transmits the driving force generated by the rotation operation of the operation handle 38 to the insulation operation rod 34 via the rotation operation rod 35 fixed to the container 27 by the attachment plate 36, thereby the insulation operation rod 34. Can be moved up and down. Since the connection conductor 32 is fixed to the insulating operation rod 34, the connection conductor 32 moves up and down with the lifting operation of the insulating operation rod 34.

図２を用いて、接続導体３２と高圧端子３１との接続及び開離の一例について説明する。図２（ａ）に示す接続導体３２及び高圧端子３１は、オン状態を示す。図２（ｂ）に示す接続導体３２及び高圧端子３１は、オフ状態を示す。   An example of connection and separation between the connection conductor 32 and the high-voltage terminal 31 will be described with reference to FIG. The connection conductor 32 and the high voltage terminal 31 shown in FIG. The connection conductor 32 and the high voltage terminal 31 shown in FIG.

図２（ａ）に示すオン状態では、接続導体３２は、高圧端子３１の真下に接触するように配置される。オン状態によって高圧導体３０は、高圧端子３１及び接続導体３２及び接続導体３２に接続された電線３９により電圧変成要素４１に接続される。
図２（ｂ）に示すオフ状態では、接続導体３２は、高圧端子３１の真下で開離されるように配置される。図示のように、電線３９は、接続及び開離可能なように十分な柔軟性と可動範囲を有するため、接続導体３２の上下移動を可能にする。また、オフ状態では、図２（ｂ）に示す絶縁状態を維持する適切なガスギャップｇまで、接続導体３２は高圧端子３１に対して開離する。
なお、電線３９は、上記したような柔軟性と可動範囲を達成するためにバネ形状のものであっても良い。
このように、高圧端子３１に対して、移動可能な接続導体３２が駆動部４０によって昇降動作し、接続又は開離することで、簡易断路装置としての機能が提供される。 In the ON state shown in FIG. 2A, the connection conductor 32 is disposed so as to be in contact with the high voltage terminal 31. The high-voltage conductor 30 is connected to the voltage transformation element 41 by the high-voltage terminal 31, the connection conductor 32, and the electric wire 39 connected to the connection conductor 32 according to the ON state.
In the off state illustrated in FIG. 2B, the connection conductor 32 is disposed so as to be separated immediately below the high-voltage terminal 31. As shown in the figure, the electric wire 39 has sufficient flexibility and a movable range so that it can be connected and disconnected, so that the connecting conductor 32 can be moved up and down. Further, in the off state, the connection conductor 32 is separated from the high voltage terminal 31 up to an appropriate gas gap g that maintains the insulation state shown in FIG.
In addition, the electric wire 39 may have a spring shape in order to achieve the flexibility and the movable range as described above.
As described above, the movable connecting conductor 32 is moved up and down by the drive unit 40 with respect to the high-voltage terminal 31 to be connected or disconnected, thereby providing a function as a simple disconnecting device.

図３を用いて、駆動部の一例について説明する。
操作ハンドル３８を回すと、回転機構部３７を通じ、回転操作棒３５が回転する。なお、回転機構部３７は、操作ハンドル３８からの回転動力を、内部に有するギヤボックス（図示省略）、かさ歯車（図示省略）、斜歯歯車（図示省略）等を利用して、回転軸方向を変換することにより、回転操作棒３５を回転する。
絶縁操作棒３４には、回転操作棒３５のネジに組み合わさるネジを有する。そのため、回転操作棒３５が回転すると、絶縁操作棒３４が昇降し、絶縁操作棒３４に連結される接続導体３２が高圧端子３１と接続又は開離する。 An example of the drive unit will be described with reference to FIG.
When the operation handle 38 is turned, the rotation operation bar 35 is rotated through the rotation mechanism unit 37. Note that the rotation mechanism unit 37 uses the gear box (not shown), the bevel gear (not shown), the bevel gear (not shown), etc., which has the rotational power from the operation handle 38 in the rotation axis direction. The rotation operation rod 35 is rotated by converting.
The insulating operation rod 34 has a screw that is combined with the screw of the rotation operation rod 35. Therefore, when the rotation operation rod 35 rotates, the insulation operation rod 34 moves up and down, and the connection conductor 32 connected to the insulation operation rod 34 is connected to or disconnected from the high voltage terminal 31.

なお、操作ハンドル３８は、誤動作を回避する等の目的のために、操作時にのみ回転機構部３７に差し込むのが好ましい。
回転機構部３７は、モータ等の動力機構（図示省略）を設けることで操作ハンドル３８による手動操作ではなく、自動操作で接続導体３２の接続又は開離を行うことが可能である。その場合は、回転機構部３７に操作パネルを付け、操作パネルから、もしくは、動力モータの電源端子を設け、遠征の監視盤と接続することで遠方からオン状態あるいはオフ状態の動作指示を行うことで、動力機構は、回転操作棒３５を動かす。また、動力機構は、絶縁操作棒３４が接続導体３２の接続及び開離のための適切な位置で止まることを、動力モータの電流値や、接続導体３２又は絶縁操作棒３４の検出センサにより自動検出することで自動停止処理を行うことができる。 Note that the operation handle 38 is preferably inserted into the rotation mechanism portion 37 only during operation for the purpose of avoiding a malfunction.
The rotation mechanism unit 37 can connect or disconnect the connection conductor 32 by an automatic operation instead of a manual operation by the operation handle 38 by providing a power mechanism (not shown) such as a motor. In that case, an operation panel is attached to the rotation mechanism unit 37, and a power motor power terminal is provided from the operation panel or connected to an expedition monitoring panel, and an on or off operation instruction is given from a distance. Thus, the power mechanism moves the rotary operation rod 35. Further, the power mechanism automatically determines that the insulating operation rod 34 stops at an appropriate position for connection and disconnection of the connection conductor 32 by using a current value of the power motor or a detection sensor of the connection conductor 32 or the insulation operation rod 34. By detecting it, automatic stop processing can be performed.

上記のように、簡易断路装置付ガスＶＴ２０は、コイルや鉄芯の重心位置を変えることなく、接続導体を長手方向に移動することで、高圧導体と電圧変成要素の断路が可能である。そのため、高圧導体と電圧変成要素との接続又は開離動作において、重量のある電圧変成要素であっても接続又は開離動作の必要動力を小さくすることができる。   As described above, the gas VT20 with the simple disconnection device can disconnect the high-voltage conductor and the voltage transformation element by moving the connecting conductor in the longitudinal direction without changing the center of gravity of the coil or the iron core. Therefore, in the connection or disconnection operation between the high voltage conductor and the voltage transforming element, the power required for the connection or disconnection operation can be reduced even with a heavy voltage transforming element.

また、接続導体の昇降動作を行うための駆動部が簡素化され、簡易断路装置付ガスＶＴの側部に配置されるため、簡易断路装置付ガスＶＴの長手方向の長さを短縮し、簡易断路装置付ガスＶＴ全体の大きさを小型化する。そのため、簡易断路装置付ガスＶＴの自重×容器の長手方向距離のモーメント力が小さくなり、ＧＩＳと簡易断路装置付ガスＶＴとの接続部の荷重応力が小さくなり、接続部の重量を軽量化することができる。   Moreover, since the drive part for performing the raising / lowering operation | movement of a connection conductor is simplified and arrange | positioned at the side part of gas VT with a simple disconnection apparatus, the length of the longitudinal direction of gas VT with a simple disconnection apparatus is shortened, and it is simple The overall size of the gas VT with the disconnecting device is reduced. For this reason, the moment force of the weight VT of the gas VT with the simple disconnect device × the longitudinal distance of the container is reduced, the load stress of the connection portion between the GIS and the gas VT with the simple disconnect device is reduced, and the weight of the connection portion is reduced. be able to.

図１は、簡易断路装置付ガスＶＴの内部構造の一例について説明する断面図である。FIG. 1 is a cross-sectional view illustrating an example of the internal structure of a gas VT with a simple disconnection device. 図２は、接続導体と高圧端子との接続及び開離の一例について説明する図である。FIG. 2 is a diagram illustrating an example of connection and separation between the connection conductor and the high-voltage terminal. 図３は、駆動部の一例について説明する断面図である。FIG. 3 is a cross-sectional view illustrating an example of a drive unit. 図４は、従来の簡易断路部付き簡易断路装置付ガスＶＴを説明する断面図である。FIG. 4 is a cross-sectional view for explaining a conventional gas VT with a simple disconnection device with a simple disconnection portion.

符号の説明Explanation of symbols

２０ 簡易断路装置付ガスＶＴ
２１ 一次コイル
２２ 二次コイル
２３、３３ 電界緩和シールド
２４ 鉄芯
２５ 鉄芯固定金具
２６ 容器底板
２７ 容器
２８ 絶縁スペーサ
２９ 取付フランジ
３０ 高圧導体
３１ 高圧端子
３２ 接続導体
３４ 絶縁操作棒
３５ 回転操作棒
３６ 取付板
３７ 回転機構部
３８ 操作ハンドル
３９ 電線
４０ 駆動部
４１ 電圧変成要素 20 Gas VT with simple disconnection device
21 Primary coil 22 Secondary coil 23, 33 Electric field relaxation shield 24 Iron core 25 Iron core fixing bracket 26 Container bottom plate 27 Container 28 Insulating spacer 29 Mounting flange 30 High voltage conductor 31 High voltage terminal 32 Connection conductor 34 Insulating operation rod 35 Rotating operation rod 36 Mounting plate 37 Rotating mechanism 38 Operation handle 39 Electric wire 40 Drive unit 41 Voltage transformation element

Claims (2)

高圧導体に接続した高圧端子と、
前記高圧端子と同一の軸上に配置された電圧変成要素と、
前記電圧変成要素に接続され、且つ前記高圧端子に配置し対向方向に移動できる接続導体と、
前記高圧端子に対して対向方向に前記接続導体を移動させて、前記接続導体に接続又は開離させる駆動部と、
を備えることを特徴とするガス絶縁計器用変圧器。 A high voltage terminal connected to a high voltage conductor;
A voltage transformer element disposed on the same axis as the high-voltage terminal;
A connection conductor connected to the voltage transformation element and arranged in the high-voltage terminal and movable in a facing direction;
A drive unit that moves the connection conductor in a direction opposite to the high-voltage terminal and connects or disconnects the connection conductor;
A gas insulated instrument transformer, comprising: 前記駆動部は、前記ガス絶縁計器用変圧器の側部に備えられることを特徴とする請求項１に記載のガス絶縁計器用変圧器。   2. The gas insulated instrument transformer according to claim 1, wherein the driving unit is provided at a side portion of the gas insulated instrument transformer. 3.
JP2008251754A 2008-09-29 2008-09-29 Transformer for gas insulated meter Withdrawn JP2010087045A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008251754A JP2010087045A (en) 2008-09-29 2008-09-29 Transformer for gas insulated meter
CN200910135493A CN101714447A (en) 2008-09-29 2009-04-30 A transformer for gas insulation instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008251754A JP2010087045A (en) 2008-09-29 2008-09-29 Transformer for gas insulated meter

Publications (1)

Publication Number Publication Date
JP2010087045A true JP2010087045A (en) 2010-04-15

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Country Status (2)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012099641A (en) * 2010-11-02 2012-05-24 Nissin Electric Co Ltd Gas-insulation instrument voltage transformer
CN104361986A (en) * 2014-11-07 2015-02-18 中国西电电气股份有限公司 Electromagnetic type potential transformer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102339669B (en) * 2010-07-23 2013-07-03 江苏思源赫兹互感器有限公司 Gas insulated switchgear (GIS) combined type voltage transformer
CN103325557B (en) * 2013-06-13 2016-03-02 中国西电电气股份有限公司 A kind of GIS voltage transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012099641A (en) * 2010-11-02 2012-05-24 Nissin Electric Co Ltd Gas-insulation instrument voltage transformer
CN104361986A (en) * 2014-11-07 2015-02-18 中国西电电气股份有限公司 Electromagnetic type potential transformer

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