JPH11113153A - Disconnector bushing - Google Patents
Disconnector bushingInfo
- Publication number
- JPH11113153A JPH11113153A JP9267569A JP26756997A JPH11113153A JP H11113153 A JPH11113153 A JP H11113153A JP 9267569 A JP9267569 A JP 9267569A JP 26756997 A JP26756997 A JP 26756997A JP H11113153 A JPH11113153 A JP H11113153A
- Authority
- JP
- Japan
- Prior art keywords
- bushing
- fastening flange
- disconnector
- bent portion
- flange
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Gas-Insulated Switchgears (AREA)
- Insulating Bodies (AREA)
- Cable Accessories (AREA)
- Distribution Board (AREA)
- Patch Boards (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、閉鎖配電盤の断路
部において、遮断器等の引出し形の電気機器の接続用導
体を支持する断路部ブッシングに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnection bushing for supporting a connection conductor of a drawer-type electric device such as a circuit breaker at a disconnection portion of a closed switchboard.
【０００２】[0002]
【従来の技術】閉鎖配電盤内に収納される遮断器は、そ
の保守、点検を容易化するため、夫々の収納室の前方か
らの押し込み及び引き出し操作により、収納室の背面に
設けた断路部に対して接離可能とした引出し形として構
成されることがある。2. Description of the Related Art Circuit breakers housed in a closed switchboard are pushed in and pulled out from the front of each of the storage rooms in order to facilitate maintenance and inspection of the circuit breakers. It may be configured as a drawer that can be moved away from it.
【０００３】図５は、引出し形の遮断器を備える閉鎖配
電盤の一例を模式的に示す側断面図である。図示の閉鎖
配電盤は、矩形箱形をなす接地金属製の外箱１の内部
を、接地金属又は絶縁材製の隔壁により仕切り、その前
下部に引出し形の遮断器３が収納された遮断器室3aを設
け、この遮断器室3aの後上部に、母線側分岐導体６が配
設された母線室6aを、同じく後下部に、送電ケーブル７
との接続のための負荷側導体５が配設されたケーブル室
7aを夫々設けた構成となっている。FIG. 5 is a side sectional view schematically showing an example of a closed switchboard provided with a drawer-type circuit breaker. The closed switchboard shown in the drawing is a circuit breaker room in which a rectangular box-shaped grounded metal outer box 1 is partitioned by a grounded metal or insulating material partition, and a drawer-type breaker 3 is housed in the lower front part. 3a, a busbar room 6a in which the busbar-side branch conductor 6 is disposed in the rear upper portion of the circuit breaker room 3a, and a power transmission cable 7
Room in which the load-side conductor 5 for connection to the cable is arranged
7a are provided respectively.
【０００４】遮断器３は、遮断器室3aの底板上にて、前
方への引き出し操作と後方への押し込み操作とが可能で
あり、遮断器室3aの後壁２には、前記押し込み操作によ
って遮断器3aの後側に突設された接続端子と接続され、
前記引き出しによって接続解除される接続用導体14が、
ブッシング４′により支持されて配してあり、母線室6a
の内部に突出する前記接続用導体14の後端は、三相の夫
々に対応する母線側分岐導体６に接続されている。[0004] The circuit breaker 3 can be pulled out forward and pushed backward on the bottom plate of the circuit breaker room 3a, and is pushed into the rear wall 2 of the circuit breaker room 3a by the pushing operation. Connected to the connection terminal protruding on the rear side of the circuit breaker 3a,
The connection conductor 14 that is disconnected by the drawer,
The bus bar 6a is supported and arranged by the bushing 4 '.
The rear ends of the connection conductors 14 projecting into the inside are connected to the bus-side branch conductors 6 corresponding to each of the three phases.
【０００５】更に、前記ブッシング４′の下位置には、
同様に構成されたブッシング４′が配してあり、このブ
ッシング４′に支持された図示しない接続用導体の後端
は、前記ケーブル室7aの内部にて三相の夫々に対応する
負荷側導体５に接続されており、上下一対のブッシング
４′，４′により、前記遮断器３の引き出しに伴って母
線側分岐導体６と負荷側導体５とを断路する断路部が構
成されている。Further, at a position below the bushing 4 ',
A bushing 4 'having a similar construction is arranged, and a rear end of a connection conductor (not shown) supported by the bushing 4' is connected to a load-side conductor corresponding to each of the three phases in the cable chamber 7a. 5, a pair of upper and lower bushings 4 ', 4' constitutes a disconnecting portion for disconnecting the bus-side branch conductor 6 and the load-side conductor 5 as the circuit breaker 3 is pulled out.
【０００６】図６は、断路部を構成するブッシング４′
を拡大して示す側断面図、図７は、図６の VII−VII 線
による正面図である。図６に示す如くブッシング４′
は、接続用導体14をその底面に貫通支持し、他側が開口
する筒形形状をなし、エポキシ樹脂等の絶縁材からなる
絶縁筒10と、これの開口側に外側に張り出すように周設
された固定フランジ11とを備えてなる。図７に示す如く
絶縁筒10は、三相の夫々に対応する接続用導体14，14，
14の外側を所定の絶縁距離を保って各別に覆う３つの円
筒を半径方向に並設した正面形状を有しており、固定フ
ランジ11は、この絶縁筒10の外側に矩形の正面形状を有
して周設されている。FIG. 6 shows a bushing 4 'constituting a disconnecting portion.
FIG. 7 is a front view taken along line VII-VII of FIG. Bushing 4 'as shown in FIG.
The connection conductor 14 is supported through the bottom surface of the connection conductor 14 and has a cylindrical shape with an opening on the other side. Fixed flange 11 provided. As shown in FIG. 7, the insulating tube 10 includes connection conductors 14, 14,
14 has a frontal shape in which three cylinders that cover the outside of the cylinder 14 with a predetermined insulation distance are arranged side by side in the radial direction, and the fixing flange 11 has a rectangular frontal shape outside the insulating cylinder 10. It is installed around.
【０００７】このように構成されたブッシング４′は、
図６に示す如く、絶縁筒10の底部側を先として、遮断器
室3aの後壁２の該当位置に開設された装着孔2aに挿通
し、該装着孔2aの内縁近傍に、前記固定フランジ11の周
縁の複数か所を各別の止めねじ９，９…によって締め付
け固定して前記後壁２に取り付けられている。なお、図
７中の9a，9a…は、止めねじ９，９…の締め付け用に設
けたねじ孔である。[0007] The bushing 4 'thus constructed is
As shown in FIG. 6, with the bottom side of the insulating tube 10 first, the insulating flange is inserted into a mounting hole 2a opened at a corresponding position of the rear wall 2 of the circuit breaker chamber 3a. 11 are attached to the rear wall 2 by tightening and fixing a plurality of locations on the peripheral edge with separate set screws 9. .. In FIG. 7 are screw holes provided for fastening the setscrews 9, 9,.
【０００８】この取り付け状態において、遮断器室3a内
に向かう絶縁筒10の開口部には、異なる径を有して突出
つば 11a,11bを突設し、これらの間に空隙12を形成し
て、図６中に２点鎖線により示す如く、断路状態におい
て開口部前面を閉鎖するシャッタ板Ｓに対する絶縁沿面
距離を確保するようにしてあり、また、絶縁筒10の底部
には突出つば 11cを突設し、接続用導体14の後側に連設
されたブッシング端子13に対する絶縁沿面距離を確保す
るようにしてある。In this mounting state, projecting flanges 11a and 11b having different diameters are protruded from openings of the insulating cylinder 10 toward the circuit breaker chamber 3a, and a gap 12 is formed therebetween. As shown by a two-dot chain line in FIG. 6, an insulating creepage distance is provided for the shutter plate S that closes the front surface of the opening in the disconnected state, and a protruding collar 11c projects from the bottom of the insulating cylinder 10. The insulation creepage distance with respect to the bushing terminal 13 continuously provided on the rear side of the connection conductor 14 is ensured.
【０００９】[0009]
【発明が解決しようとする課題】ところが、以上の如く
構成された従来のブッシング４′においては、遮断器３
の引き出し又は押し込みに伴って接続用導体14に軸長方
向の外力が加わるとき、絶縁筒10の外側に周設された固
定フランジ11に曲げ力が作用することとなり、この曲げ
力に対して所定の強度を得るべく、該固定フランジ11に
十分な肉厚を確保する必要があって、このことが、ブッ
シング４′の軽量化を阻害する要因となっている。However, in the conventional bushing 4 'constructed as described above, the breaker 3
When an external force in the axial direction is applied to the connection conductor 14 as the connection conductor 14 is pulled out or pushed in, a bending force acts on the fixed flange 11 provided around the outside of the insulating tube 10, and a predetermined force is applied to the bending force. In order to obtain the required strength, it is necessary to secure a sufficient thickness for the fixing flange 11, and this is a factor that hinders the weight reduction of the bushing 4 '.
【００１０】更に、高電圧が加わる接続用導体14、及び
ブッシング端子13に対して所定の表面漏洩長を確保し、
高い耐電圧性能を得るために、固定フランジ11の正面サ
イズを大きくせざるを得ず、特に、定格電流の増大に応
じてブッシング端子13が大きくなったとき、絶縁筒10の
底部に突設された突出つば 11cによる表面漏洩長の確保
が難しくなり、これに伴って固定フランジ11の正面サイ
ズが更に大形化し、このことが、ブッシング４′の軽量
化を阻害する上、固定フランジ11の取り付け面積の確保
のために閉鎖配電盤全体の大型化を招来するという問題
があった。Further, a predetermined surface leakage length is secured for the connection conductor 14 to which a high voltage is applied and the bushing terminal 13,
In order to obtain high withstand voltage performance, the front size of the fixed flange 11 must be increased, especially when the bushing terminal 13 becomes larger in accordance with an increase in the rated current. It is difficult to secure the surface leakage length by the protruding flange 11c, and accordingly the front size of the fixing flange 11 is further increased, which hinders the weight reduction of the bushing 4 'and, in addition, the mounting of the fixing flange 11 There is a problem that the size of the entire closed switchboard is increased to secure the area.
【００１１】本発明は斯かる事情に鑑みてなされたもの
であり、固定フランジの厚肉化によらずに外力に対して
十分な強度が得られ、また、接続用導体及びブッシング
端子に対する十分な表面漏洩長を、固定フランジの正面
サイズの大形化を伴うことなく確保することができ、小
型軽量でありながら耐電圧性能に優れた断路部ブッシン
グを提供することを目的とする。[0011] The present invention has been made in view of such circumstances, and provides a sufficient strength against external force without increasing the thickness of the fixing flange. An object of the present invention is to provide a disconnection bushing that can ensure a surface leakage length without increasing the front size of a fixed flange and that is small and lightweight and has excellent withstand voltage performance.
【００１２】[0012]
【課題を解決するための手段】請求項１の発明の断路部
ブッシングは、絶縁筒の開口側に周設された固定フラン
ジの周縁部に、軸断面において絶縁筒の底面の側に向け
て湾曲する湾曲部を設けたものである。According to a first aspect of the present invention, there is provided a disconnecting portion bushing which is curved on a peripheral portion of a fixed flange provided on an opening side of an insulating cylinder toward a bottom surface side of the insulating cylinder in an axial cross section. This is provided with a curved portion.
【００１３】この発明においては、固定フランジの周縁
部に湾曲部が設けてあり、この湾曲部に沿う表面長さの
増大により、接続用導体及びブッシング端子に対する表
面漏洩長を確保する一方、取り付け状態において作用す
る外力を固定フランジに引張力として作用させ、該固定
フランジを過度に厚肉とすることなく十分な強度を確保
する。In the present invention, a curved portion is provided on the peripheral edge of the fixed flange, and by increasing the surface length along the curved portion, the surface leakage length to the connection conductor and the bushing terminal is ensured while the mounting state is maintained. The external force acting on the fixing flange acts on the fixing flange as a tensile force to secure sufficient strength without making the fixing flange excessively thick.
【００１４】請求項２の発明の断路部ブッシングは、絶
縁筒の開口側から見て矩形形状を有する固定フランジの
辺上に、絶縁筒の外周に近い部分にて外向きに張り出す
張り出し部を設けたものである。According to a second aspect of the present invention, there is provided a disconnecting portion bushing, wherein a projecting portion projecting outward at a portion close to the outer periphery of the insulating cylinder is provided on a side of the fixed flange having a rectangular shape when viewed from the opening side of the insulating cylinder. It is provided.
【００１５】この発明においては、絶縁筒の外周に近い
固定フランジの辺上、即ち、表面漏洩長の確保が難しい
辺上に局所的に張り出し部を設け、固定フランジ全体の
大形化を伴わずに十分な表面漏洩長を確保する。According to the present invention, the projecting portion is provided locally on the side of the fixed flange close to the outer periphery of the insulating cylinder, that is, on the side where the surface leakage length is difficult to secure, without enlarging the entire fixed flange. Ensure sufficient surface leakage length.
【００１６】[0016]
【発明の実施の形態】以下本発明をその実施の形態を示
す図面に基づいて詳述する。図１は、本発明に係る断路
部ブッシングの第１の実施の形態を示す側断面図であ
り、図２は、図１のII−II線による正面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments. FIG. 1 is a side sectional view showing a disconnecting portion bushing according to a first embodiment of the present invention, and FIG. 2 is a front view taken along line II-II of FIG.
【００１７】これらの図に示すブッシング４は、図６及
び図７に示す従来のブッシング４′と同様、引き出し形
の遮断器３を備える閉鎖配電盤において、該遮断器３の
引き出しにより断路される断路部に用いられるものであ
り、図中の２は、遮断器室3aの後壁を示している。The bushing 4 shown in these figures is similar to the conventional bushing 4 'shown in FIGS. 6 and 7, and is a disconnection which is disconnected by pulling out the circuit breaker 3 in a closed switchboard having a drawer-type circuit breaker 3. The reference numeral 2 in the drawing denotes a rear wall of the circuit breaker room 3a.
【００１８】本発明に係るブッシング４は、接続用導体
14をその底面に貫通支持し、他側が開口する筒形形状を
有する絶縁筒10と、これの開口側に外側に張り出すよう
に周設された固定フランジ８とを備えてなる。絶縁筒10
は、エポキシ樹脂等の絶縁材料製の部材であり、図２に
示す如く、三相の夫々に対応する接続用導体14，14，14
の外側を所定の絶縁距離を保って各別に覆う３つの円筒
を、半径方向に所定の距離を隔てて並設した正面形状を
有している。The bushing 4 according to the present invention comprises a connecting conductor
14 is provided with an insulating tube 10 having a cylindrical shape with the other side open and penetratingly supported on the bottom surface thereof, and a fixed flange 8 provided around the opening side to project outward. Insulation tube 10
Is a member made of an insulating material such as epoxy resin. As shown in FIG.
It has a frontal shape in which three cylinders that cover the outside of each of them while keeping a predetermined insulation distance are arranged side by side at a predetermined distance in the radial direction.
【００１９】図６に示す従来のブッシング４′と同様、
本発明に係るブッシング４においても、遮断器室3aの内
側に向かう絶縁筒10の開口部には、異なる径を有して突
出つば 11a,11bを突設し、これらの間に空隙12を設け
て、前記開口部の前側を覆うシャッタ板Ｓに対する絶縁
沿面距離を確保するようにしてある。Similar to the conventional bushing 4 'shown in FIG.
Also in the bushing 4 according to the present invention, projecting flanges 11a and 11b having different diameters are protrudingly provided at the opening of the insulating cylinder 10 toward the inside of the circuit breaker chamber 3a, and a gap 12 is provided therebetween. Thus, the insulation creepage distance with respect to the shutter plate S that covers the front side of the opening is ensured.
【００２０】本発明に係るブッシング４の特徴は、絶縁
筒10の外側に周設された固定フランジ８の形状にある。
図２は、絶縁筒10の開口側から見た正面図であり、前記
固定フランジ８は、前述した正面形状をなす絶縁筒10の
外側に矩形の正面形状を有して周設されており、その周
縁部には、図１に示す如く、絶縁筒10の軸断面におい
て、該絶縁筒10の底面の側に向けて円弧状に湾曲する湾
曲部8aが全周に亘って設けられている。The feature of the bushing 4 according to the present invention lies in the shape of the fixing flange 8 provided around the outside of the insulating tube 10.
FIG. 2 is a front view of the insulating tube 10 as viewed from the opening side, and the fixing flange 8 is provided around the insulating tube 10 having the above-described front shape, with a rectangular front shape, As shown in FIG. 1, a curved portion 8a that is curved in an arc shape toward the bottom surface side of the insulating cylinder 10 is provided along the entire periphery of the peripheral portion, as shown in FIG.
【００２１】このように構成されたブッシング４は、遮
断器室3aの後壁２の該当位置に開設された装着孔2aに、
絶縁筒10の底部側を先として挿通され、固定フランジ８
の周縁部の複数か所を、前記装着孔2aの内縁近傍に各別
の止めねじ９，９…によって締め付け固定することによ
り、前記後壁２に取り付けられている。The bushing 4 configured as described above is inserted into a mounting hole 2a opened at a corresponding position on the rear wall 2 of the circuit breaker room 3a.
The insulating flange is inserted with the bottom side of the insulating tube
Are attached to the rear wall 2 by tightening and fixing a plurality of portions of the peripheral portion near the inner edge of the mounting hole 2a with separate set screws 9, 9,.
【００２２】このとき、前述した軸断面形状をなす固定
フランジ８は、周縁の湾曲部8aの後方への延長端におい
て装着孔2aの内縁前面に当接することとなり、前記止め
ねじ９，９…による固定は、前記延長端部を、図２に示
す如く、矩形の４隅、及び絶縁筒10を構成する３つの円
筒間を内側に窪ませて設けた８か所の凹所8b，8b…にお
いてなされている。At this time, the fixing flange 8 having the above-mentioned axial cross-section comes into contact with the front surface of the inner edge of the mounting hole 2a at the rearwardly extending end of the curved portion 8a of the peripheral edge. As shown in FIG. 2, the extended end is fixed at four corners of a rectangle and eight recesses 8b, 8b,. It has been done.
【００２３】以上の如き固定フランジ８を備えるブッシ
ング４においては、図１に示す取り付け状態において、
遮断器３（図５参照）の引き出し又は押し込みに伴って
接続用導体14に加わる軸長方向の外力が前記湾曲部8aに
沿って方向を変え、固定フランジ８には、正又は負の引
張力として作用することとなり、図示の如く、略均等な
薄肉の固定フランジ８により十分な強度を確保すること
ができ、固定フランジ８を含めたブッシング４の大幅な
軽量化が達成される。In the bushing 4 having the fixing flange 8 as described above, in the mounting state shown in FIG.
When the circuit breaker 3 (see FIG. 5) is pulled out or pushed in, the external force in the axial direction applied to the connection conductor 14 changes its direction along the curved portion 8a, and the positive or negative tensile force is applied to the fixed flange 8. As shown in the figure, sufficient strength can be secured by the substantially uniform thin fixing flange 8, and the bushing 4 including the fixing flange 8 can be significantly reduced in weight.
【００２４】また、接続用導体14及びこれの後側に連設
されたブッシング端子13に対する表面漏洩長は、固定フ
ランジ８における前記湾曲部8aに沿った長さとなり、固
定フランジ８の正面サイズを大きくすることなく十分な
表面漏洩長を容易に確保することができ、高い耐電圧性
能が得られる上、ブッシング４の更なる軽量化が達成さ
れる。また、ブッシング端子13に対する表面漏洩長を確
保するために、従来のの如く、絶縁筒10の底面外側に突
出つば 11cを設ける必要がなくなり、大電流への対応の
ために大サイズのブッシング端子13を用いることが可能
となる。The surface leakage length of the connection conductor 14 and the bushing terminal 13 connected to the rear side of the connection conductor 14 is the length along the curved portion 8a of the fixed flange 8, and the front size of the fixed flange 8 is reduced. A sufficient surface leakage length can be easily secured without increasing the size, high withstand voltage performance is obtained, and further reduction in the weight of the bushing 4 is achieved. Further, it is not necessary to provide a protruding collar 11c outside the bottom surface of the insulating cylinder 10 as in the related art in order to secure the surface leakage length with respect to the bushing terminal 13. Can be used.
【００２５】図３は、本発明に係る断路部ブッシングの
第２の実施の形態を示す正面図であり、図４は、図３の
IV−IV線による断面図である。FIG. 3 is a front view showing a disconnecting portion bushing according to a second embodiment of the present invention, and FIG.
It is sectional drawing by the IV-IV line.
【００２６】この実施の形態において固定フランジ８
は、図３に示す如く、絶縁筒10の開口側からの正面視に
て矩形形状を有しており、その辺上の絶縁筒10の外周に
近い部分、図においては、その両短辺の中央部分に外向
きに張り出す態様に張り出し部15，15が設けてある。こ
の張り出し部15，15は、図４に示す如く、絶縁筒10の外
周に近く、湾曲部8aに至る前の平坦部の長さが短い部位
において、この長さを増して、接続用導体14及びブッシ
ング端子13に対する十分な表面漏洩長を確保すべく設け
られたものである。In this embodiment, the fixing flange 8
Has a rectangular shape in a front view from the opening side of the insulating tube 10 as shown in FIG. 3, and a portion of the side near the outer periphery of the insulating tube 10 and, in the drawing, both short sides thereof. Overhang portions 15, 15 are provided at the central portion so as to overhang outward. As shown in FIG. 4, the overhanging portions 15, 15 increase the length of the flat portion before reaching the curved portion 8a near the outer periphery of the insulating tube 10 and increase the length of the flat portion. And a sufficient surface leakage length to the bushing terminal 13 is provided.
【００２７】このような張り出し部15，15を設けること
により、前記平坦部の長さの確保が容易な固定フランジ
８の他の部分の正面サイズを相対的に小さくすることが
可能となり、固定フランジ８の全体としての小型化によ
り、ブッシング４の更なる軽量化が達成される。By providing such overhangs 15, 15, it is possible to relatively reduce the front size of the other portion of the fixed flange 8 where the length of the flat portion can be easily ensured, and Due to the overall downsizing of the bushing 8, further reduction in the weight of the bushing 4 is achieved.
【００２８】[0028]
【発明の効果】以上詳述した如く請求項１の発明に係る
断路部ブッシングにおいては、絶縁筒の開口側に周設さ
れた固定フランジの周縁部に、軸断面においてこれの底
面の側に向かう円弧状の湾曲部を設けたから、この湾曲
部に沿う固定フランジの表面長さの増大により、固定フ
ランジの正面サイズを大きくすることなく接続用導体及
びブッシング端子に対する十分な表面漏洩長が確保でき
て耐電圧性能の向上を図ることができ、また、取り付け
状態において作用する外力が固定フランジに引張力とし
て作用するようになり、厚肉化を伴うことなく十分な強
度を確保でき、従来に比して大幅な軽量化が達成され
る。As described above in detail, in the disconnecting portion bushing according to the first aspect of the present invention, the fixing flange provided on the opening side of the insulating cylinder is directed to the peripheral portion of the fixing flange toward the bottom surface thereof in the axial cross section. Since the arc-shaped curved portion is provided, a sufficient surface leakage length for the connection conductor and the bushing terminal can be secured without increasing the front size of the fixed flange by increasing the surface length of the fixed flange along the curved portion. The withstand voltage performance can be improved, and the external force acting in the mounted state acts as a tensile force on the fixed flange, ensuring sufficient strength without increasing the wall thickness. And significant weight reduction is achieved.
【００２９】また請求項２の発明に係る断路部ブッシン
グにおいては、絶縁筒の開口側から見て矩形形状を有す
る固定フランジの辺上に、絶縁筒の外周に近い部分にて
外向きに張り出す張り出し部を設けたから、固定フラン
ジの全周において、全体の大形化を伴わずに十分な表面
漏洩長を確保することができ、耐電圧性能の向上と、軽
量化とが達成される等、本発明は優れた効果を奏する。In the disconnecting portion bushing according to the second aspect of the present invention, a portion near the outer periphery of the insulating cylinder projects outward on the side of the fixed flange having a rectangular shape when viewed from the opening side of the insulating cylinder. Since the overhang is provided, it is possible to secure a sufficient surface leakage length without enlarging the whole circumference of the fixed flange, thereby improving the withstand voltage performance and reducing the weight. The present invention has excellent effects.
【図１】 本発明に係る断路部ブッシングの第１の実施
の形態を示す側断面図である。FIG. 1 is a side sectional view showing a first embodiment of a disconnection portion bushing according to the present invention.
【図２】 図１のII−II線による正面図である。FIG. 2 is a front view taken along line II-II of FIG.
【図３】 本発明に係る断路部ブッシングの第２の実施
の形態を示す正面図である。FIG. 3 is a front view showing a disconnecting portion bushing according to a second embodiment of the present invention.
【図４】 図３のIV−IV線による断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG.
【図５】 閉鎖配電盤の一例を示す側断面図である。FIG. 5 is a side sectional view showing an example of a closed switchboard.
【図６】 従来の断路部ブッシングの側断面図である。FIG. 6 is a side sectional view of a conventional disconnecting portion bushing.
【図７】 図６の VII−VII 線による正面図である。FIG. 7 is a front view taken along line VII-VII in FIG. 6;
４ ブッシング、８ 固定フランジ、8a 湾曲部、13
ブッシング端子、14 接続用導体、15 張り出し部。4 bushing, 8 fixing flange, 8a curved part, 13
Bushing terminals, 14 connecting conductors, 15 overhangs.
Claims (2)
断路部の接続用導体の外側を覆う絶縁筒と、該絶縁筒の
開口側に周設され、その周縁部に軸断面において前記底
面の側に向けて湾曲する湾曲部を有する固定フランジと
を具備することを特徴とする断路部ブッシング。1. An insulating cylinder which has a bottomed cylindrical shape and covers the outside of a connection conductor of a disconnecting portion supported on a bottom surface thereof, and is provided around the opening side of the insulating cylinder, and has a peripheral section in an axial cross section. And a fixing flange having a curved portion curved toward the bottom surface.
て矩形形状を有しており、その辺上の絶縁筒の外周に近
い部分に、前記外周から離れる向きに張り出す張り出し
部を備える請求項１記載の断路部ブッシング。2. The fixing flange has a rectangular shape as viewed from the opening side of the insulating cylinder, and has a protruding portion projecting away from the outer periphery at a portion of the side near the outer periphery of the insulating cylinder on its side. The disconnecting portion bushing according to claim 1.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26756997A JP3427151B2 (en) | 1997-09-30 | 1997-09-30 | Disconnect bushing |
| TW087114323A TW410351B (en) | 1997-09-30 | 1998-08-29 | Enclosed switchgear and disconnection section bushing |
| KR10-1998-0039986A KR100397629B1 (en) | 1997-09-30 | 1998-09-25 | Disconnection section bushing |
| CNB981208967A CN1168186C (en) | 1997-09-30 | 1998-09-29 | Enclosed switch board and isolation parts casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26756997A JP3427151B2 (en) | 1997-09-30 | 1997-09-30 | Disconnect bushing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11113153A true JPH11113153A (en) | 1999-04-23 |
| JP3427151B2 JP3427151B2 (en) | 2003-07-14 |
Family
ID=17446623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26756997A Expired - Fee Related JP3427151B2 (en) | 1997-09-30 | 1997-09-30 | Disconnect bushing |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3427151B2 (en) |
| KR (1) | KR100397629B1 (en) |
| CN (1) | CN1168186C (en) |
| TW (1) | TW410351B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120182669A1 (en) * | 2009-09-24 | 2012-07-19 | Abb Technology Ag | Bushing assembly for draw-out circuit breaker |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105359361B (en) * | 2013-08-05 | 2017-09-29 | 三菱电机株式会社 | Gas-insulated switchgear device |
| KR102435410B1 (en) * | 2020-07-31 | 2022-08-24 | 엘에스일렉트릭(주) | Distributing Board |
-
1997
- 1997-09-30 JP JP26756997A patent/JP3427151B2/en not_active Expired - Fee Related
-
1998
- 1998-08-29 TW TW087114323A patent/TW410351B/en not_active IP Right Cessation
- 1998-09-25 KR KR10-1998-0039986A patent/KR100397629B1/en active IP Right Grant
- 1998-09-29 CN CNB981208967A patent/CN1168186C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120182669A1 (en) * | 2009-09-24 | 2012-07-19 | Abb Technology Ag | Bushing assembly for draw-out circuit breaker |
| US8681481B2 (en) * | 2009-09-24 | 2014-03-25 | Abb Technology Ag | Bushing assembly for draw-out circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3427151B2 (en) | 2003-07-14 |
| CN1168186C (en) | 2004-09-22 |
| TW410351B (en) | 2000-11-01 |
| CN1213204A (en) | 1999-04-07 |
| KR19990030161A (en) | 1999-04-26 |
| KR100397629B1 (en) | 2003-11-28 |
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