WO2012172703A1 - タンク形真空遮断器 - Google Patents
タンク形真空遮断器 Download PDFInfo
- Publication number
- WO2012172703A1 WO2012172703A1 PCT/JP2011/075682 JP2011075682W WO2012172703A1 WO 2012172703 A1 WO2012172703 A1 WO 2012172703A1 JP 2011075682 W JP2011075682 W JP 2011075682W WO 2012172703 A1 WO2012172703 A1 WO 2012172703A1
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- WIPO (PCT)
- Prior art keywords
- tank
- conductor
- shield
- circuit breaker
- vacuum circuit
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0354—Gas-insulated switchgear comprising a vacuum switch
Definitions
- the present invention relates to a tank-type vacuum circuit breaker, and more particularly to a structure of a connecting portion that connects a bushing to a movable side and a fixed side terminal inside the tank.
- the tank type vacuum circuit breaker is arranged horizontally in the ground tank, which is horizontally arranged and sealed with insulating gas. Is provided with a pair of bushings.
- the connection terminal of the movable conductor derived from the movable contact of the vacuum valve is connected to the lower end of the central conductor of one bushing, and the connection terminal of the fixed conductor and the central conductor of the other bushing derived from the fixed contact Is connected to the lower end of the.
- the lower end side of the center conductor of the bushing can be inserted into the movable side and the fixed side of the vacuum valve.
- a side contact case and a fixed contact case are disclosed, and a pipe-like bushing center conductor is directly fitted and connected to a fitting hole of each contact case (for example, refer to Patent Document 1).
- the fixed side conductor derived from the fixed side contact of the vacuum valve and the central conductor of one bushing are connected via a shield with a fixed side connection conductor made of a plate
- the movable side derived from the movable side contact A technique is also disclosed in which a conductor and a central conductor of the other bushing are connected via a shield with a movable connection conductor made of a flexible conductor (see Patent Document 2).
- JP 2007-306701 A page 4-5, FIG. 2
- JP 2010-178526 A (5th page, FIG. 2)
- the movable side and fixed side contact case on the vacuum valve side connected to the central conductor of the bushing is an insertion type in which the central conductor is directly inserted.
- the mechanical vibration and impact force associated with the opening and closing operation of the vacuum valve is transmitted directly to the central conductor and the pipe.
- the mechanical vibration and impact force associated with the opening and closing operation may cause wear of the insertion-type contact part and loosening of the fastening part of the mechanically connected parts such as the center conductor and pipe.
- it is necessary to precisely position the fitting portion, and assembly adjustment and parts production are complicated, resulting in high costs.
- the present invention has been made to solve the above-described problems, and suppresses transmission of mechanical vibration / impact force accompanying the opening / closing operation to the bushing side, and facilitates assembly and adjustment. It aims at obtaining the tank type vacuum circuit breaker provided with the shield.
- a tank-type vacuum circuit breaker includes a cylindrical main tank in which an insulating gas is sealed, a vacuum valve that is insulated and supported in the main tank, and a pair of bushings provided upright in the main tank. And movable and fixed connection terminals connected to the vacuum valve contacts and arranged on both sides in the axial direction of the vacuum valve, flexible conductors connecting the lower ends of the central conductors of the bushings and the connection terminals,
- the shield is provided substantially coaxially with the vacuum valve on both sides in the axial direction of the vacuum valve so as to connect the connection portion between the connection terminal and the flexible conductor.
- the main body side shield to be covered is combined with a bushing side shield which is provided substantially coaxially with the central conductor on the lower end side of the central conductor and covers the connecting portion between the central conductor and the flexible conductor.
- the central conductor of the bushing and the connection terminal are connected by the flexible conductor
- the shield covering the connection portion is the main body side shield covering the connection portion of the connection terminal and the flexible conductor.
- a bushing-side shield that covers the connection between the central conductor of the bushing and the flexible conductor, so mechanical vibration and shock due to opening and closing of the vacuum circuit breaker by connection using the flexible conductor The transmission of force to the bushing side can be suppressed, and the shield is divided into the bushing side and the vacuum valve side, so that the connection terminals and bushings on the movable and fixed sides of the vacuum valve that require position adjustment The adjustment work of the connecting portion with the central conductor is reduced, and the assembly work of the shield becomes easier.
- FIG. 1 It is sectional drawing which shows the tank type vacuum circuit breaker by Embodiment 1 of this invention. It is principal part sectional drawing of FIG. It is a perspective view of the shield part of FIG. It is a perspective view which shows the other example of the shield of the tank type vacuum circuit breaker by Embodiment 1 of this invention.
- FIG. 1 is a cross-sectional view showing a tank-type vacuum circuit breaker according to Embodiment 1 of the present invention.
- FIG. 2 is an enlarged cross-sectional view of the connection portion between the central conductor of the bushing and the movable side and fixed side connection terminals connected to the contact of the vacuum valve in the tank type vacuum circuit breaker shown in FIG.
- FIG. 3 is a perspective view showing the shield part of FIG.
- a description will be given based on the drawings.
- the cylindrical main tank 2 that is electrically grounded is installed with its axis line oriented in the horizontal direction, and has a pair of openings 2 a and 2 b above the main tank 2.
- a vacuum valve 3 which is a main body portion of the vacuum circuit breaker, is arranged with its axis line oriented in the same direction as the axis line of the main tank 2 and supported by the insulating support member 4.
- the vacuum valve 3 is disposed inside a cylindrical vacuum vessel 5 made of an insulating material so that a fixed contact 6 and a movable contact 7 can be opposed to and separated from each other.
- one end of the movable side conductor 8 connected to the movable contact 7 is led out to the outside of the vacuum vessel 5 through the bellows 9, and further drawn out to the outside of the main tank 2 through the insulating rod 10 and the bellows 11.
- the operation mechanism 12 is connected.
- one end of the fixed-side conductor 13 connected to the fixed contact 6 is led out of the vacuum vessel 5.
- a pair of bushings 14a and 14b are vertically installed in the openings 2a and 2b of the main tank 2 so as to be inclined vertically upward with respect to the axis of the main tank 2 or so as to spread upward at a predetermined angle. .
- the upper ends of the bushings 14a and 14b are hermetically sealed by bushing terminals 15a and 15b.
- the center conductors 16a and 16b connected to the bushing terminals 15a and 15b are disposed inside the bushings 14a and 14b.
- the center conductor 16a is electrically connected to the movable side conductor 8 of the vacuum valve 3, and the center conductor 16b is electrically connected to the fixed side conductor 13. The details of the connecting portion will be described later.
- the inside of the vacuum vessel 5 is hermetically maintained in a vacuum, and an insulating gas adjusted to a predetermined pressure is sealed in the space outside the vacuum vessel 5 of the main tank 2 and the internal spaces of the bushings 14a and 14b. ing.
- the movable contact 7 is moved in the axial direction of the main tank 2 via the insulating rod 10 and the movable conductor 8, thereby bringing the both contacts 6, 7 of the vacuum valve 3 into contact and separation,
- the vacuum circuit breaker can be turned on or off.
- FIG. 2 is a partial cross-sectional view showing a connection portion between the lower end side of the central conductor 16a of the movable-side bushing 14a of FIG. 1 and the movable-side conductor 8 side of the vacuum valve 3, and (a) is the same as FIG.
- FIG. 5B is a diagram viewed in the direction indicated by the arrow bb in FIG. However, the illustration of the flexible conductor is omitted in (b).
- the movable side conductor 8 led out from the vacuum vessel 5 of the vacuum valve 3 is provided with a movable side connection terminal 17.
- a connection surface is formed on the side of the movable side connection terminal 17 facing the lower side of the bushing so as to be parallel to the axis of the main tank 2 and to face the central conductor 16a.
- the central conductor 16a of the bushing about half of the conductor diameter is cut out, and a connection surface is formed so as to be parallel to the axis of the central conductor 16a and face the axial direction of the main tank 2. . Both ends of the movable flexible conductor 18 are connected to both connection surfaces.
- the movable flexible conductor 18 has a plurality of strip-like thin plates made of, for example, copper or aluminum excellent in electrical conductivity, and both end portions are integrally fixed to form a connection hole. It is connected to each connection surface by bolting.
- the fixed side is substantially the same, and as shown in FIG. 1, the connection surface formed on the fixed side connection terminal 19 connected to the fixed side conductor 13 on the outside of the vacuum vessel 5 and the central conductor of the bushing 14b.
- the connection surface formed at the lower end of 16 b is connected by the fixed-side flexible conductor 20.
- the shield is divided into two parts.
- One is a main body side shield that is provided substantially coaxially with the vacuum valve on both sides in the axial direction of the vacuum valve and covers the connection between the flexible conductor and the connection terminal.
- One is a bushing-side shield that is provided on the lower end side of the center conductor substantially coaxially with the center conductor and covers the connection portion between the center conductor and the flexible conductor, and these two are combined to form a shield. If it demonstrates on the movable side shown in FIG.
- the cylindrical main body side shield 21 will mainly cover the connection part of the movable side connection terminal 17 and the movable side flexible conductor 18, and the bushing side shield 22 will mainly be comprised.
- the connecting portion between the lower end side of the center conductor 16a and the movable flexible conductor 18 is configured to be covered.
- the fixed side is substantially the same, and includes a main body side shield 23 and a bushing side shield 24 (see FIG. 1).
- an adapter 25 is provided at the lower end of the center conductor 16a in order to attach the bushing side shield 22 to the lower side of the center conductor 16a.
- the adapter 25 has a mounting surface that fits the inner diameter of the bushing-side shield 22 on its side surface, and is fixed to the lower end surface of the center conductor 16a by mounting bolts 26.
- the inner peripheral side of the bushing side shield 22 is fitted to the mounting surface on the side surface of the adapter 25 and fixed by screwing or the like.
- the main body side shield 21 is fixed to a member on the vacuum circuit breaker main body side by screwing or the like on both sides or one side of the axial end portion.
- the dimension is set so that a slight gap is formed at the joint portion between both shields 21 and 22.
- FIG. 3 is a perspective view of the movable shield described in FIG.
- the shield is formed of a thin plate of a conductive material made of, for example, aluminum, copper, or an alloy thereof, and the cylindrical body-side shield 21 is arranged in the axial direction of the main tank 2 in order to facilitate assembly and processing. It is divided into two along. The figure shows a case where the upper and lower parts are divided into two. By dividing into two, it can be easily manufactured by bending from a flat plate.
- a mounting hole 21a is provided near the end in the axial direction.
- an opening hole 21 b having a size substantially the same as the size of the lower end side of the bushing side shield 22 is formed on the side facing the bushing side shield 22.
- the bushing-side shield 22 has a cylindrical shape that spreads at the bottom, and is also divided into two along the axial direction of the center conductor 16a in order to facilitate assembly and processing.
- An attachment hole 22a for attaching to the adapter 25 is provided on the side surface.
- the bottom of the bushing side shield 22 is widened so that the connection portion of the movable side flexible conductor 18 with the movable side connection terminal 17 is pivoted in conjunction with the movement of the movable contact 7 to and from the fixed contact 6. Since it moves in the direction, the amount of movement is taken into account. However, a straight cylindrical shape may be used as long as a necessary distance can be ensured even when moved.
- the shape of the fixed-side body-side shield 23 and the bushing-side shield 24 may be basically the same as that of the movable side, but since the fixed-side flexible conductor 20 does not move on the fixed side, the bushing-side shield 24 is If a straight cylindrical shape is used as shown in FIG.
- the connecting portion configured as described above will be described.
- the lower end side of the central conductor of the bushing and the connection terminal on the conductor side derived from the vacuum valve are connected by a flexible conductor, so that mechanical vibration and impact force due to the opening and closing of the circuit breaker are applied to the bushing pipe and the central conductor. Can be reduced.
- the adjustment work of the center conductor intersecting with the axis of the vacuum valve is reduced on the movable side and the fixed side of the vacuum valve that require position adjustment with respect to the main tank shaft.
- the degree of freedom of the connection position with the central conductor is increased, and connection at positions other than the axis crossing position is also possible.
- the shield is divided into a bushing side shield and a main body side shield, and transmission of mechanical vibration and impact force through the shield is blocked. Moreover, by dividing the shield into the bushing side and the main body side, the whole can be made compact, and further, the radial dimension of the bushing side shield can be particularly reduced by forming the connection surface in the above-described direction. . Since the shield can be made compact, the tank can be reduced as a result.
- FIG. 4 is a partial perspective view showing another example of the shield, and corresponds to a lower part of the main body side shield of FIG. 3 divided into two parts. Except for the illustration, it is the same as FIG.
- an inspection or work opening hole 21c is provided in the vicinity of the center on the lower side of the main body side shield 21 which is divided into two.
- the position of the opening hole 21c is a surface on the opposite side to the side combined with the bushing side shield. According to this configuration, since the manhole is generally provided on the lower side of the main tank as shown in FIG. 1, the inspection of the connecting portion, for example, the insulation rod is performed with the shield attached. Work such as assembly and removal of connection pins can be performed.
- the cylindrical main tank in which an insulating gas is sealed, the vacuum valve disposed in an insulated manner in the main tank, and the main tank A pair of bushings erected on each other, movable and fixed connection terminals connected to the vacuum valve contacts and disposed on both axial sides of the vacuum valve, a lower end of the central conductor of each bushing and each connection terminal
- the shield is provided substantially coaxially with the vacuum valve on both sides in the axial direction of the vacuum valve.
- a body side shield that covers the connection part between the center conductor and the connection terminal, and a bushing side shield that is provided substantially coaxially with the center conductor on the lower end side of the center conductor and covers the connection part between the center conductor and the flexible conductor has been By using a flexible conductor, mechanical vibration and impact force due to opening and closing of the vacuum circuit breaker can be prevented from being transmitted to the bushing side, and the shield is divided into the bushing side and the vacuum valve side. As a result, the adjustment work of the connection portion between the movable and fixed connection terminals of the vacuum valve and the central conductor of the bushing that require position adjustment is reduced, and the shield assembly work is facilitated.
- the connecting surface on the lower end side of the central conductor to which the flexible conductor is connected is formed in parallel with the axis of the central conductor and facing the axial direction of the main tank, and the connecting surface on the connecting terminal side is formed on the main tank. Since it is formed parallel to the axis and facing the central conductor, the radial dimension of the bushing side shield can be reduced, and the entire shield can be reduced in size.
- the shield can be easily manufactured and assembled.
- an inspection or work opening hole is provided on the surface of the main body side shield that is opposite to the side that is to be combined with the bushing side shield. Can be easily connected and disconnected.
Landscapes
- Gas-Insulated Switchgears (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
従来の、タンク形真空遮断器の中心導体と遮断器側の導体部との接続構造として、例えば、真空バルブの可動側及び固定側のそれぞれに、ブッシングの中心導体の下端側が挿入可能な、可動側コンタクトケース及び固定側コンタクトケースを備え、パイプ状のブッシング中心導体が各コンタクトケースの嵌合穴に直接嵌め合わされ接続されたものが開示されている(例えば、特許文献1参照)。
また、真空バルブの固定側接点から導出された固定側導体と一方のブッシングの中心導体とを、シールドを介して、板材からなる固定側接続導体で接続し、可動側接点から導出された可動側導体と他方のブッシングの中心導体とを、シールドを介して、可撓導体からなる可動側接続導体で接続した技術も開示されている(特許文献2参照)。
これに対し、特許文献2に示されたタンク形真空遮断器では、接続部が可撓性のある接続導体で接続されているため、開閉動作に伴う機械的な振動・衝撃力がそのままブッシング側に伝達されることはないが、接続導体部は電界が集中する部位でもあるので、全体が電界緩和用のシールドで覆われており、このシールドを介して真空バルブ側とブッシング側とが接続されている。接続部全体を一つのシールドで覆っているため、シールドの外径が大きくなり、また、接続部の組立や寸法調整が煩雑になるという問題点があった。
図1は、この発明の実施の形態1によるタンク形真空遮断器を示す断面図である。また、図2は、図1に示したタンク形真空遮断器のうち、ブッシングの中心導体と真空バルブの接点に接続された可動側及び固定側の接続端子との接続部の拡大断面図であり、図3は図2のシールド部を示す斜視図である。以下、図に基づいて説明する。
電気的に接地された円筒状の主タンク2は、軸線を水平方向に向けて設置されており、主タンク2の上方には一対の開口部2a,2bを有している。主タンク2の内部には真空遮断器の本体部である真空バルブ3が、軸線を主タンク2の軸線と同方向に向け、絶縁支持部材4により支持されて配置されている。この真空バルブ3は、絶縁材料からなる筒状の真空容器5の内部に、固定接点6と可動接点7とが接離可能に対向配置されている。そして、可動接点7に連結された可動側導体8の一端がベローズ9を介して真空容器5の外部に導出され、更に、絶縁ロッド10、ベローズ11を介して主タンク2の外部へ引き出され、操作機構12に連結されている。一方、固定接点6に連結された固定側導体13も一端が真空容器5外に導出されている。
中心導体16aは真空バルブ3の可動側導体8と電気的に接続され、中心導体16bは固定側導体13と電気的に接続されているが、接続部の詳細については後述する。
真空容器5内は真空に気密保持されており、主タンク2の真空容器5の外部側空間と、各ブッシング14a,14bの内部空間には、所定に圧力に調整された絶縁性ガスが封入されている。
操作機構12を操作することにより、絶縁ロッド10,可動側導体8を介して可動接点7を主タンク2の軸線方向に移動させることで、真空バルブ3の両接点6,7を接離させ、真空遮断器を投入または遮断できるようになっている。
図2は、図1の可動側のブッシング14aの中心導体16aの下端側と、真空バルブ3の可動側導体8側との接続部を示す部分断面図であり、(a)は図1と同じ方向に見た図、(b)は(a)の矢印b-bに示す方向に見た図である。但し、(b)には可撓導体の図示は省略している。
可動側可撓導体18は、導電性に優れた、例えば銅やアルミ材からなる帯状の薄板が複数枚重ね合わされ、両端部側はそれぞれ一体に固着されて接続用の穴が形成されており、ボルト締めによって各接続面に接続されるようになっている。
なお、固定側もほぼ同様であり、図1に示すように、真空容器5の外部側で固定側導体13に接続された固定側接続端子19に形成された接続面と、ブッシング14bの中心導体16bの下端に形成された接続面とが、固定側可撓導体20で接続されている。
図2に示す可動側で説明すれば、円筒状の本体側シールド21は、主に、可動側接続端子17と可動側可撓導体18との接続部を覆い、ブッシング側シールド22は、主に、中心導体16aの下端側と可動側可撓導体18との接続部を覆うように構成されている。
固定側もほぼ同様であり、本体側シールド23とブッシング側シールド24とを備えている(図1参照)。
一方、本体側シールド21は、軸方向端部の両側又は片側が、真空遮断器本体部側の部材にねじ留め等により固定されている。
なお、両シールド21,22が取り付けられた状態では、両シールド21,22の接合部は若干の隙間が形成されるように寸法を設定している。
図3は、図2で説明した可動側のシールドの斜視図である。シールドは、例えば、アルミニウムや銅又はそれらの合金からなる導電材料の薄板で形成されており、円筒状の本体側シールド21は、組付け及び加工を容易にするために、主タンク2の軸線方向に沿って2分割されている。図では上下に2分割した場合を示している。2分割することで、平板から曲げ加工で容易に製作できる。軸方向の端部近傍には、取付穴21aを設けている。また、ブッシング側シールド22と対向する側には、ブッシング側シールド22の下端側の大きさとほぼ同じ大きさの開口穴21bが形成されている。
一方、ブッシング側シールド22は、裾広がりの円筒状であり、やはり、組付け及び加工を容易にするために、中心導体16aの軸線方向に沿って2分割されている。側面にはアダプタ25に取り付けるための取付穴22aを設けている。
また、固定側の本体側シールド23とブッシング側シールド24の形状は、基本的に可動側と同様でよいが、固定側は固定側可撓導体20の移動がないので、ブッシング側シールド24は、図1に示すようにストレートの円筒状とすれば、製作が簡単である。
先ず、ブッシングの中心導体の下端側と真空バルブから導出された導体側の接続端子とを可撓導体により接続することにより、遮断器の開閉による機械的振動,衝撃力がブッシングの碍管や中心導体に伝播されるのを軽減することができる。
また、主タンク軸との位置調整を要す真空バルブの可動側及び固定側において、真空バルブの軸と交差する中心導体の調整作業が軽減される。更に、中心導体との接続位置の自由度が増し、軸交差位置以外での接続も可能となる。
又、シールドをブッシング側と本体側とに分けたことで、全体がコンパクトにでき、更に、接続面を上述のような向きに形成したことで、特に、ブッシング側シールドの径方向寸法を縮小できる。シールドをコンパクトにできるため、結果的に、タンクの縮小化を図ることが可能となる。
図に示すように、本体側シールド21の2分割した下部側には、中央部近傍に点検用又は作業用の開口穴21cを設けたものである。なお、開口穴21cの位置は、ブッシング側シールドと組み合わされる側の反対側の面である。
この構成によれば、主タンクの下部側には、一般的に、図1に示すようにマンホールが設けられているので、シールドを取り付けた状態で、接続部の点検や、例えば、絶縁ロッドの接続ピンの組付けや取外し等の作業を行うことができる。
2a,2b 開口部 3 真空バルブ
4 絶縁支持部材 5 真空容器
6 固定接点 7 可動接点
8 可動側導体 9,11 ベローズ
10 絶縁ロッド 12 操作機構
13 固定側導体 14a,14b ブッシング
15a,15b ブッシング端子 16a,16b 中心導体
17 可動側接続端子 18 可動側可撓導体
19 固定側接続端子 20 固定側可撓導体
21,23 本体側シールド 21a,22a 取付穴
21b,21c 開口穴 22,24 ブッシング側シールド
25 アダプタ 26 取付ボルト。
Claims (4)
- 絶縁性ガスが封入された円筒状の主タンクと、前記主タンク内に絶縁支持されて配置された真空バルブと、前記主タンクに立設された一対のブッシングと、前記真空バルブの接点に接続され前記真空バルブの軸方向両側に配置された可動側及び固定側の接続端子と、前記各ブッシングの中心導体の下端と前記各接続端子とを接続する可撓導体と、前記可撓導体の接続部を包囲するシールドとを備えたタンク形真空遮断器において、
前記シールドは、前記真空バルブの前記軸方向両側に前記真空バルブと略同軸に設けられて前記可撓導体と前記接続端子との接続部を覆う本体側シールドと、前記中心導体の下端側に前記中心導体と略同軸に設けられて前記中心導体と前記可撓導体との接続部を覆うブッシング側シールドとが組み合わされて構成されていることを特徴とするタンク形真空遮断器。 - 請求項1記載のタンク形真空遮断器において、
前記可撓導体が接続される前記中心導体の下端側の接続面は、前記中心導体の軸線に並行で且つ前記主タンクの軸線方向に面して形成され、前記接続端子側の接続面は、前記主タンクの軸線に並行で且つ前記中心導体に面して形成されていることを特徴とするタンク形真空遮断器。 - 請求項1又は請求項2記載のタンク形真空遮断器において、
前記本体側シールドは、前記主タンクの軸線方向に沿って2分割され、前記ブッシング側シールドは、前記中心導体の軸線方向に沿って2分割されていることを特徴とするタンク形真空遮断器。 - 請求項1~請求項3のいずれか1項に記載のタンク形真空遮断器において、
前記本体側シールドの、前記ブッシング側シールドと組み合わされる側の反対側の面に、点検または作業用の開口穴が設けられていることを特徴とするタンク形真空遮断器。
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JP2013520403A JP5646057B2 (ja) | 2011-06-17 | 2011-11-08 | タンク形真空遮断器 |
CN201180071672.6A CN103620897B (zh) | 2011-06-17 | 2011-11-08 | 箱形真空断路器 |
DE112011105349.5T DE112011105349T5 (de) | 2011-06-17 | 2011-11-08 | Vakuum-trennschalter vom behältertyp |
AU2011371061A AU2011371061B2 (en) | 2011-06-17 | 2011-11-08 | Tank-shaped vacuum circuit breaker |
US14/118,574 US9082572B2 (en) | 2011-06-17 | 2011-11-08 | Tank type vacuum circuit breaker |
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JP (1) | JP5646057B2 (ja) |
CN (1) | CN103620897B (ja) |
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DE102017206754A1 (de) * | 2017-04-21 | 2018-10-25 | Siemens Aktiengesellschaft | Schaltgeräteantriebsanordnung |
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JP5646057B2 (ja) | 2014-12-24 |
DE112011105349T5 (de) | 2014-02-27 |
AU2011371061A1 (en) | 2013-12-19 |
US20140124480A1 (en) | 2014-05-08 |
US9082572B2 (en) | 2015-07-14 |
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