JP3277499B2 - Disconnector - Google Patents
DisconnectorInfo
- Publication number
- JP3277499B2 JP3277499B2 JP29301694A JP29301694A JP3277499B2 JP 3277499 B2 JP3277499 B2 JP 3277499B2 JP 29301694 A JP29301694 A JP 29301694A JP 29301694 A JP29301694 A JP 29301694A JP 3277499 B2 JP3277499 B2 JP 3277499B2
- Authority
- JP
- Japan
- Prior art keywords
- inspection lid
- fixture
- inspection
- disconnector
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は断路器に関し、特に発
電所の発電主回路等に用いられる大電流通電用の断路器
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnecting switch, and more particularly to a disconnecting switch for supplying a large current to a power generating main circuit of a power plant.
【0002】[0002]
【従来の技術】図7はこの種の従来の断路器の部分断面
と外観構成を示す正面図、図8は図7における平面図、
図9は図8における外被の線IX−IXに沿った断面図
である。図において、1は電路の一方側をなす可動側導
体2に取り付けられた円筒状の固定フィンガコンタク
ト、3は電路の他方側をなす固定側導体4に取り付けら
れた円筒状の固定コンタクトで、固定フィンガコンタク
ト1と離隔して対向するように配置されている。5は固
定フィンガコンタクト1の内側を軸方向に動作するよう
に設けられ固定フィンガコンタクト1と固定コンタクト
3とを電気的に接離する円筒状の可動フィンガコンタク
ト、6は可動フィンガコンタクト5を動作させる繰り出
し機構で、可動側導体2に内蔵されている。7は可動フ
ィンガコンタクト5を動作させる操作力を発生する操作
装置、8は操作装置7で発生した操作力を繰り出し機構
6へ伝達する絶縁ロッドで、これら1〜8で断路部を形
成している。9は外被で、各コンタクト1,3,5をほ
ぼ同心の円筒状をなして覆い点検用の開口10aを有す
る胴部10と開口10aを塞ぎ胴部10に着脱可能な点
検蓋11で形成されている。12は点検蓋11を押さえ
て取り付ける取付具でここでは金属材を用いている。1
3は開口10aの胴部縁に溶接された座、14は取付具
12を座13に固定するボルト、15は胴部10と点検
蓋11間で気密性を高めるパッキン、16は取付具12
の押さえ過ぎを防止するストッパ、17は導体2,4を
外被9から支持する絶縁支持物である。なお図10は上
記断路器を適用した発電所の単線図の例を示すもので、
18は発電機、19は相分離母線、20は遮断器、21
は断路器、22は主変圧器である。2. Description of the Related Art FIG. 7 is a front view showing a partial cross section and an external structure of a conventional disconnector of this type, FIG. 8 is a plan view of FIG.
FIG. 9 is a sectional view taken along the line IX-IX of the jacket in FIG. In the drawing, reference numeral 1 denotes a cylindrical fixed finger contact attached to a movable side conductor 2 forming one side of an electric circuit, and 3 denotes a cylindrical fixed contact attached to a fixed side conductor 4 forming the other side of the electric path. It is arranged so as to face the finger contact 1 at a distance. Reference numeral 5 denotes a cylindrical movable finger contact which is provided so as to operate inside the fixed finger contact 1 in the axial direction and electrically contacts and separates the fixed finger contact 1 and the fixed contact 3, and 6 operates the movable finger contact 5. The feeding mechanism is built in the movable-side conductor 2. Reference numeral 7 denotes an operating device for generating an operating force for operating the movable finger contact 5, and 8 denotes an insulating rod for transmitting the operating force generated by the operating device 7 to the feeding mechanism 6, and these 1 to 8 form a disconnecting portion. . Reference numeral 9 denotes a jacket, which is formed of a body 10 having a substantially concentric cylindrical shape covering each of the contacts 1, 3, and 5 and having an opening 10a for inspection, and an inspection lid 11 which closes the opening 10a and is detachable from the body 10. Have been. Reference numeral 12 denotes a fixture for holding down the inspection lid 11 and attaching the inspection lid 11, which is made of a metal material. 1
3 is a seat welded to the edge of the body of the opening 10a, 14 is a bolt for fixing the fixture 12 to the seat 13, 15 is a packing for increasing airtightness between the body 10 and the inspection lid 11, and 16 is a fixture 12
A stopper 17 for preventing the pressing of the conductors 2 is an insulating support for supporting the conductors 2 and 4 from the jacket 9. FIG. 10 shows an example of a single-line diagram of a power plant to which the disconnector is applied.
18 is a generator, 19 is a phase separation bus, 20 is a circuit breaker, 21
Is a disconnector and 22 is a main transformer.
【0003】次に動作について説明する。操作装置7で
発生した動力は絶縁ロッド8を介し、繰り出し機構6に
取り付けられた可動フィンガコンタクト5を軸方向に動
作させ電路を開閉する。可動フィンガコンタクト5が閉
じ電路が構成されると相分離母線19bからの電流は可
動側導体2〜固定フィンガコンタクト1〜可動フィンガ
コンタクト5〜固定コンタクト3〜固定側導体4と流
れ、接続された相分離母線19cと流れて行く。一方、
外被9には相分離母線同様、導体中を流れる電流による
磁束を打ち消す電流が誘起される。その外被電流は軸方
向に流れるとともに導体電流に大きさがほとんど等しく
位相が180゜弱遅れたものとなる。なお、外被9の胴
部10は外被電流を通電させるため導電率の高いアルミ
ニウム材を使用している。通常外被電流A1は胴部10
の断面上ほぼ均一に流れるが、この外被9の場合は胴部
10の開口10a近傍で図11の外被電流のモデルに示
す通り電流密度が高くなる。また、点検蓋11には外被
電流A1の影響で渦電流A2も誘起される。特に外被電流
A1の電流密度が高い部分では近接効果により渦電流A2
が点検蓋11の円周方向の端に集中する様になる。Next, the operation will be described. The power generated by the operating device 7 operates the movable finger contact 5 attached to the feeding mechanism 6 in the axial direction via the insulating rod 8 to open and close the electric circuit. When the movable finger contact 5 is closed and an electric circuit is formed, the current from the phase separation bus 19b flows through the movable side conductor 2 to the fixed finger contact 1 to the movable finger contact 5 to the fixed contact 3 to the fixed side conductor 4, and the connected phase It flows with the separation bus 19c. on the other hand,
Similar to the phase-separated bus, a current that cancels magnetic flux due to a current flowing in the conductor is induced in the jacket 9. The jacket current flows in the axial direction and has almost the same magnitude as that of the conductor current, with a phase slightly delayed by 180 °. The body 10 of the jacket 9 is made of an aluminum material having high conductivity in order to pass a jacket current. Normally, the jacket current A 1 is
In the case of the jacket 9, the current density becomes high near the opening 10a of the body 10 as shown in the model of the jacket current in FIG. Further, the eddy current A 2 under the influence of the enveloping current A 1 is also induced in the inspection lid 11. Particularly in a portion where the current density of the jacket current A 1 is high, the eddy current A 2
Are concentrated on the circumferential end of the inspection lid 11.
【0004】さらに、開口10aを点検蓋11で塞いだ
状態においては、取付具12と点検蓋11との取付時に
取付具12が先端で点検蓋11の表面を覆っている絶縁
性を有する塗膜11aの圧接する部分をやぶり点検蓋1
1の素地と接触した場合、図12に示す様な胴部10〜
座13〜取付具12〜点検蓋11〜取付具12〜座13
〜胴部10といった電気回路が形成され、外被電流A1
が分流し、上記ルートで電流が通電する場合がある。塗
膜11の内ストッパ16との圧接部は接面が広いため剥
離しにくい。なお、点検蓋11は、断路器の内部のコン
タクト類の点検・手入れを行うのに充分な大きさの開口
10aに対応したものであり、作業性を考慮して軽量な
板厚4mm程度のアルミニウム材を用いている。Further, when the opening 10a is closed by the inspection lid 11, when the attachment 12 is attached to the inspection lid 11, the fitting 12 covers the surface of the inspection lid 11 at the tip. Inspection cover 1 after the part to be pressed against 11a
1, the body 10 as shown in FIG.
Seat 13-Fixture 12-Inspection lid 11-Fixture 12-Seat 13
An electric circuit such as the body 10 is formed, and the jacket current A 1
May shunt and current may flow through the above route. The press-contact portion of the coating film 11 with the inner stopper 16 has a large contact surface, so that it is difficult to peel off. The inspection lid 11 corresponds to the opening 10a which is large enough to inspect and care for the contacts inside the disconnector, and is made of a lightweight aluminum plate having a thickness of about 4 mm in consideration of workability. Material is used.
【0005】[0005]
【発明が解決しようとする課題】従来のこの種の断路器
は以上のように構成されているので、近年発電機の単機
容量が増大し、外被電流A1も大きくなり、それに伴い
点検蓋11の渦電流A2が増加し、誘導加熱による温度
上昇と、取付具12〜点検蓋11を通じて流れる外被電
流A1の分流に起因する点検蓋11の局部発熱による温
度上昇とが重畳し、他の外被部分における温度上昇値を
極端に上回るケースが出てきた。このため断路器の許容
通電電流値が制約を受けることになり、断路器通電容量
向上のためには断路器全体を大型化させたり、また、近
年のこれら開閉器縮小化の要請に容易に応えられないと
いう問題点があった。Since conventional breaker of this type [0008] is constructed as described above, recent single machine capacity of the generator is increased, the envelope current A 1 becomes large, access covers with it 11 eddy current a 2 is increased, the temperature rise by induction heating, and temperature rise is superimposed due to local heat generation of the inspection lid 11 due to the diversion of the enveloping current a 1 flowing through the fixture 12 through the inspection lid 11, There have been cases where the temperature rise in other jacket parts is significantly higher. For this reason, the allowable current value of the disconnector is restricted, and in order to improve the current capacity of the disconnector, it is necessary to increase the size of the entire disconnector and to easily respond to recent demands for downsizing the switch. There was a problem that it could not be done.
【0006】この発明は上記のような問題点を解消する
ためになされたもので、外被電流による点検蓋部の異常
発熱が抑制でき、同じ定格電流域における小形化が可能
な断路器を得ることを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an abnormal heat generation of an inspection cover due to a jacket current can be suppressed, and a disconnector which can be downsized in the same rated current range can be obtained. The purpose is to:
【0007】[0007]
【課題を解決するための手段】この発明に係る請求項1
の断路器は、導体の端部に設けられ離隔して対向する一
対の円筒状のコンタクトとコンタクトに介在して対向方
向に動作しコンタクトとの接離で電路の開閉をする可動
コンタクトとで形成する断路部と、断路部をほぼ同心の
円筒状をなして覆いかつ点検用の開口を有する胴部とこ
の胴部の開口を塞ぐ点検蓋と一端側を開口近傍の胴部に
固定しこの状態で他端側の先端が点検蓋表面を押圧して
取り付ける取付具とで形成する外被とを備えた断路器に
おいて、点検蓋の材質をステンレス材にするとともに点
検蓋と取付具とを電気的な絶縁状態で形成したものであ
る。Means for Solving the Problems Claim 1 according to the present invention.
The disconnecting switch is formed by a pair of cylindrical contacts provided at the end of the conductor and spaced apart from each other and a movable contact interposed between the contacts and operating in the opposite direction to open and close the electric circuit by contacting and separating with the contact. A disconnecting portion, a trunk portion that covers the disconnecting portion in a substantially concentric cylindrical shape and has an opening for inspection, an inspection lid for closing the opening of the trunk portion, and one end side fixed to the trunk portion near the opening in this state. And a cover formed by a fitting which is attached by pressing the surface of the inspection lid at the other end. The inspection lid is made of stainless steel, and the inspection lid and the fitting are electrically connected. It is formed in an insulated state.
【0008】また、この発明に係る請求項2の断路器
は、請求項1において、点検蓋と取付具との電気的な絶
縁状態は点検蓋の押圧される表面に絶縁シートを布設し
てなるものである。According to a second aspect of the present invention, there is provided a disconnector according to the first aspect, wherein an electrical insulation state between the inspection lid and the attachment is obtained by laying an insulating sheet on a surface of the inspection lid to be pressed. Things.
【0009】また、この発明に係る請求項3の断路器
は、請求項1において、点検蓋と取付具との電気的な絶
縁状態は取付具の先端に絶縁物を具備してなるものであ
る。According to a third aspect of the present invention, there is provided the disconnector according to the first aspect, wherein the electrical insulation between the inspection lid and the fixture is provided with an insulator at the tip of the fixture. .
【0010】また、この発明に係る請求項4の断路器
は、請求項1において、点検蓋と取付具との電気的な絶
縁状態は取付具自体を絶縁物化してなるものである。According to a fourth aspect of the present invention, there is provided the disconnector according to the first aspect, wherein the electrical insulation state between the inspection lid and the fixture is obtained by converting the fixture itself into an insulator.
【0011】[0011]
【作用】この発明における断路器は、外被の点検蓋をス
テンレス材質としたことにより、点検蓋に流れる渦電流
とこれに伴う温度上昇を抑制する。また、外被で点検蓋
と胴部間を電気的に絶縁状態にしたことにより、外被電
流の分流を遮断し局部発熱を抑制する。In the disconnector according to the present invention, the inspection lid of the outer cover is made of stainless steel, thereby suppressing eddy current flowing through the inspection lid and a rise in temperature associated therewith. In addition, since the inspection lid and the body are electrically insulated from each other by the jacket, the shunt of the jacket current is cut off to suppress local heat generation.
【0012】また、点検蓋縁表面の絶縁シートが点検蓋
と取付具に介在し、点検蓋と胴部間を電気的に絶縁状態
にする。Further, an insulating sheet on the surface of the inspection lid is interposed between the inspection lid and the mounting member, so that the inspection lid and the body are electrically insulated.
【0013】また、取付部材先端の絶縁物が点検蓋と取
付具に介在し、点検蓋と胴部間を電気的に絶縁状態にす
る。Further, an insulator at the tip of the mounting member is interposed between the inspection lid and the mounting tool, and electrically insulates the inspection lid from the body.
【0014】また、絶縁物化した取付具が点検蓋と胴部
間を電気的に絶縁状態にする。Further, the mounting member made of an insulating material makes the inspection lid and the body electrically insulated.
【0015】[0015]
実施例1.以下、この発明の実施例1を図について説明
する。図1はこの発明の実施例1における断路器の外被
で点検蓋部を示す平面図、図2は図1における線II−
IIに沿った断面図である。図において、9,10,1
2〜16は従来と同様でありその説明は省略する。23
はステンレス材質でなる点検蓋で板厚は従来のもの11
とほぼ同等となっている。24は点検蓋23の縁表面に
ねじ止めあるいは接着等で固定されたテフロン等の絶縁
シートである。Embodiment 1 FIG. Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an inspection cover part in a jacket of a disconnector in a first embodiment of the present invention, and FIG. 2 is a line II- in FIG.
It is sectional drawing which followed II. In the figure, 9, 10, 1
Nos. 2 to 16 are the same as in the prior art, and a description thereof will be omitted. 23
Is an inspection lid made of stainless steel and has a plate thickness of 11
Is almost equivalent to Reference numeral 24 denotes an insulating sheet such as Teflon fixed to the edge surface of the inspection lid 23 by screwing or bonding.
【0016】次に動作について説明する。点検蓋23が
従来の材質アルミニウムよりステンレスに変更されたこ
とにより、点検蓋23の抵抗率が高くなり外被電流によ
る渦電流が抑制されることで誘導加熱が緩和され、温度
上昇が抑えられる。また、取付具12と点検蓋23間に
絶縁シート24を介在させたことで電気的接触が解消さ
れ、外被電流の分流がなくなり接触部でのジュール損に
よる局部発熱が解消される。図3はこのことを実証した
例えば25kA通電時における実験結果を示すもので、
(A)に測定ポイントa〜hを(B)に従来例と実施例
1とを比較した測定値を示している。このように各ポイ
ントの温度上昇値を抑制できることにより、同一定格電
流値における断路器の小形化が図れるとともに、電流値
の増大にともなう外被サイズのアップも、点検蓋部に起
因する温度上昇の配慮を必要とせず、最適サイズの断路
器が得られる。Next, the operation will be described. By changing the inspection lid 23 from stainless steel to aluminum in the related art, the resistivity of the inspection lid 23 is increased, and eddy current due to the jacket current is suppressed, so that induction heating is moderated and a temperature rise is suppressed. In addition, since the insulating sheet 24 is interposed between the fixture 12 and the inspection lid 23, the electrical contact is eliminated, the shunt of the jacket current is eliminated, and the local heat generation due to the Joule loss at the contact portion is eliminated. FIG. 3 shows an experimental result at the time of applying a current of, for example, 25 kA, which proves this fact.
(A) shows measurement points a to h, and (B) shows measurement values obtained by comparing the conventional example with the first embodiment. By suppressing the temperature rise value at each point in this way, the size of the disconnector at the same rated current value can be reduced, and the size of the jacket increases due to the increase in the current value. An optimally sized disconnector can be obtained without any consideration.
【0017】実施例2.なお、上記実施例1では点検蓋
23と取付具12の電気的接触を解消するのに、点検蓋
23に絶縁シート24を設けたものを示したが、実施例
2として図4に示す様に取付具12の先端に絶縁物ここ
では絶縁シート25をボルト26,ナット27を用い取
り付けるようにしてもよい。また、絶縁シート25の取
り付けはテープでのしばり付け、あるいは接着によるも
のであってもよい。さらに、図5に示す様な取付具12
の先端が挿入出来る穴28aを設けた絶縁物ここでは絶
縁キャップ28にしてもよい。Embodiment 2 FIG. In the first embodiment, the inspection lid 23 is provided with the insulating sheet 24 in order to eliminate the electrical contact between the inspection lid 23 and the fixture 12. However, as shown in FIG. An insulator, here an insulating sheet 25, may be attached to the tip of the fixture 12 using bolts 26 and nuts 27. Further, the insulating sheet 25 may be attached by tape or by adhesion. Further, the mounting fixture 12 as shown in FIG.
An insulator having a hole 28a into which the tip of the wire can be inserted may be an insulating cap 28 here.
【0018】実施例3.また、上記実施例1,2では金
具12の先端側で電気的接触を解消する構成のものを示
したが実施例3として図6に示すように、取付具12を
固定する側に絶縁ワッシャ29,段付絶縁ワッシャ30
を用い取付具12と座13間を電気的に接触しないよう
に構成してもよい。Embodiment 3 FIG. Further, in the first and second embodiments, the structure in which the electrical contact is eliminated on the tip side of the metal fitting 12 is shown. However, as a third embodiment, as shown in FIG. , Stepped washer 30
May be used so as not to make electrical contact between the fixture 12 and the seat 13.
【0019】実施例4.さらに、取付具12自体を強化
プラスチック等の強固な絶縁部材(図示してない)とす
ることにより点検蓋11と胴部10との電気的回路を遮
断するようにしても、上記実施例と同様な効果が得られ
る。Embodiment 4 FIG. Further, even if the electric circuit between the inspection lid 11 and the body part 10 is cut off by making the fixture 12 itself a strong insulating member (not shown) such as reinforced plastic, the same as in the above embodiment. Effects can be obtained.
【0020】また、上記各実施例では対称を断路器の場
合について説明したが、CT等を点検口より挿入する構
成の相分離母線であってもよく、上記実施例と同様の効
果を奏する。Further, in each of the above embodiments, the description has been given of the case where the disconnector is symmetrical. However, a phase separation bus having a configuration in which a CT or the like is inserted from an inspection port may be used, and the same effect as in the above embodiment can be obtained.
【0021】[0021]
【発明の効果】以上のように、この発明の請求項1によ
れば、導体の端部に設けられ離隔して対向する一対の円
筒状のコンタクトとコンタクトに介在して対向方向に動
作しコンタクトとの接離で電路の開閉をする可動コンタ
クトとで形成する断路部と、断路部をほぼ同心の円筒状
をなして覆いかつ点検用の開口を有する胴部とこの胴部
の開口を塞ぐ点検蓋と一端側を開口近傍の胴部に固定し
この状態で他端側の先端が点検蓋表面を押圧して取り付
ける取付具とで形成する外被とを備えた断路器におい
て、点検蓋の材質をステンレス材にするとともに点検蓋
と取付具とを電気的な絶縁状態で形成したので、点検蓋
に流れる渦電流とこれに伴う温度上昇を抑制するととも
に外被電流の分流を遮断し局部発熱を抑制でき、同じ定
格電流域における小形化が可能な断路器が得られる効果
がある。As described above, according to the first aspect of the present invention, a pair of cylindrical contacts provided at the ends of the conductor and opposed to each other and spaced apart from each other and operate in the opposite direction with the contacts interposed therebetween. A disconnecting part formed by a movable contact that opens and closes an electric circuit when approaching and separating from the body, a body part covering the disconnecting part in a substantially concentric cylindrical shape and having an opening for inspection, and an inspection for closing the opening of the body part In a disconnector having a cover and a fitting formed by fixing the one end to the body near the opening and mounting the tip of the other end by pressing the surface of the inspection lid in this state, a material of the inspection lid is provided. Is made of stainless steel and the inspection lid and the mounting fixture are formed in an electrically insulated state, so that eddy currents flowing through the inspection lid and the accompanying temperature rise are suppressed, and the branch current of the jacket current is cut off to reduce local heat generation. Can be suppressed, and small in the same rated current range. The effect of reduction is capable disconnector is obtained.
【0022】また、この発明の請求項2によれば、請求
項1において、点検蓋の押圧される表面に絶縁シートを
布設したので、絶縁シートが点検蓋と取付具に介在し点
検蓋と胴部間を電気的に絶縁状態にできる。According to a second aspect of the present invention, in the first aspect, the insulating sheet is laid on the surface of the inspection lid to be pressed, so that the insulating sheet is interposed between the inspection lid and the mounting member, and the inspection lid and the body are provided. The parts can be electrically insulated.
【0023】また、この発明の請求項3によれば、請求
項1において、取付具の先端に絶縁物を具備したので、
取付具先端の絶縁物が点検蓋と取付具に介在し点検蓋と
胴部間を電気的に絶縁状態にできる。According to a third aspect of the present invention, in the first aspect, an insulating material is provided at a tip of the mounting fixture.
An insulator at the tip of the fixture is interposed between the inspection lid and the fixture, and the inspection lid and the body can be electrically insulated.
【0024】また、この発明の請求項4によれば、請求
項1において、取付具自体を絶縁物化したので、取付具
によって点検蓋と胴部間を電気的に絶縁状態にできる。According to the fourth aspect of the present invention, in the first aspect, since the attachment itself is made of an insulating material, the inspection cover and the body can be electrically insulated by the attachment.
【図1】 この発明の実施例1における断路器の外被で
点検蓋部を示す平面図である。FIG. 1 is a plan view showing an inspection cover with a jacket of a disconnector according to a first embodiment of the present invention.
【図2】 図1における線II−IIに沿った断面図で
ある。FIG. 2 is a sectional view taken along line II-II in FIG.
【図3】 実施例1の効果を実証するための実験結果を
示す説明図。FIG. 3 is an explanatory view showing an experimental result for verifying the effect of the first embodiment.
【図4】 この発明の実施例2における点検蓋の取付具
の要部を示す断面図である。FIG. 4 is a cross-sectional view illustrating a main part of a fixture for an inspection lid according to a second embodiment of the present invention.
【図5】 この発明の実施例2における点検蓋の取付具
に用いる絶縁キャップを示す斜視図である。FIG. 5 is a perspective view showing an insulating cap used as a fixture for an inspection lid in Embodiment 2 of the present invention.
【図6】 この発明の実施例3における点検蓋の取付具
の固定を示す断面図である。FIG. 6 is a cross-sectional view illustrating fixing of a fixture for an inspection lid according to a third embodiment of the present invention.
【図7】 従来の断路器を部分断面と外観構成を示す正
面図である。FIG. 7 is a front view showing a partial cross section and an external configuration of a conventional disconnector.
【図8】 従来の断路器の外観構成を示す平面図であ
る。FIG. 8 is a plan view showing an external configuration of a conventional disconnector.
【図9】 図8における線IX−IXに沿った断面図で
ある。FIG. 9 is a sectional view taken along line IX-IX in FIG.
【図10】 発電所の機器構成例を示す単線図である。FIG. 10 is a single-line diagram showing an example of a device configuration of a power plant.
【図11】 従来の外被電流及び渦電流のモデル図であ
る。FIG. 11 is a model diagram of a conventional jacket current and eddy current.
【図12】 従来の点検蓋部を流れる分流電流のモデル
図である。FIG. 12 is a model diagram of a shunt current flowing through a conventional inspection lid.
1 固定フィンガコンタクト、2 可動側導体(一方側
導体)、3 固定コンタクト、4 固定側導体(他方側
導体)、5 可動フィンガコンタクト、9 外被、10
胴部、10a 開口、12 取付具、23 点検蓋、
24 絶縁シート、25 絶縁シート(絶縁物)、28
絶縁キャップ(絶縁物)。1 fixed finger contact, 2 movable side conductor (one side conductor), 3 fixed contact, 4 fixed side conductor (other side conductor), 5 movable finger contact, 9 jacket, 10
Body, 10a opening, 12 fittings, 23 inspection lid,
24 Insulation sheet, 25 Insulation sheet (insulator), 28
Insulating cap (insulator).
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) H01H 33/28 - 33/59 H01H 31/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H01H 33/28-33/59 H01H 31/02
Claims (4)
一対の円筒状のコンタクトと上記コンタクトに介在して
上記対向方向に動作し上記コンタクトとの接離で電路の
開閉をする可動コンタクトとで形成する断路部と、上記
断路部をほぼ同心の円筒状をなして覆いかつ点検用の開
口を有する胴部とこの胴部の上記開口を塞ぐ点検蓋と一
端側を上記開口近傍の胴部に固定しこの状態で他端側の
先端が上記点検蓋表面を押圧して取り付ける取付具とで
形成する外被とを備えた断路器において、上記点検蓋の
材質をステンレス材にするとともに上記点検蓋と上記取
付具とを電気的な絶縁状態で形成したことを特徴とする
断路器。1. A pair of cylindrical contacts provided at an end of a conductor and opposed to each other and spaced apart from each other, and a movable contact interposed between the contacts and operated in the facing direction to open and close an electric circuit by contact and separation with the contacts. A body part having a substantially concentric cylindrical shape covering the disconnection part and having an opening for inspection, an inspection lid for closing the opening of the body part, and a body near the opening at one end side. And a cover formed by a fixture fixed at the other end and having the other end pressed against the surface of the inspection lid in this state, the inspection lid is made of stainless steel and the inspection lid is made of stainless steel. A disconnector, wherein the inspection lid and the attachment are formed in an electrically insulated state.
点検蓋の押圧される表面に絶縁シートを布設してなるこ
とを特徴とする請求項1に記載の断路器。2. The disconnector according to claim 1, wherein an electrical insulation state between the inspection lid and the fixture is obtained by laying an insulating sheet on a surface of the inspection lid to be pressed.
取付具の先端に絶縁物を具備してなることを特徴とする
請求項1に記載の断路器。3. The disconnector according to claim 1, wherein the inspection lid and the fixture are electrically insulated from each other by providing an insulator at a tip of the fixture.
取付具自体を絶縁物化してなることを特徴とする請求項
1に記載の断路器。4. The disconnector according to claim 1, wherein the electrical insulation between the inspection lid and the fixture is obtained by converting the fixture itself into an insulator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29301694A JP3277499B2 (en) | 1994-11-28 | 1994-11-28 | Disconnector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29301694A JP3277499B2 (en) | 1994-11-28 | 1994-11-28 | Disconnector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08153447A JPH08153447A (en) | 1996-06-11 |
JP3277499B2 true JP3277499B2 (en) | 2002-04-22 |
Family
ID=17789395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29301694A Expired - Fee Related JP3277499B2 (en) | 1994-11-28 | 1994-11-28 | Disconnector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3277499B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102044374B (en) * | 2010-10-28 | 2016-05-25 | 河南省电力公司平顶山供电公司 | One is kept apart official seal electro-heat equipment |
-
1994
- 1994-11-28 JP JP29301694A patent/JP3277499B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH08153447A (en) | 1996-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3277499B2 (en) | Disconnector | |
EP0348131B1 (en) | Electrical apparatus | |
JPH08251779A (en) | Strip plate conductor for branch part and branch unit for strip plate conductor circuit | |
JPH06141599A (en) | Multiphase changeover system and generator apparatus provided with said changeover system | |
JP2743522B2 (en) | Different power supply contact detection method and device | |
JPS5932106Y2 (en) | Phase separation bus bar current transformer mounting device | |
EP3944276B1 (en) | Circuit breaker compartment | |
JP4188593B2 (en) | Gas insulated switchgear | |
JPH1066212A (en) | Three-phase phase separation bus line | |
JPS5838748Y2 (en) | Phase separation busbar for electrical equipment | |
JPH0749690Y2 (en) | Insulator and insulator tube damage prevention device | |
JP2513569Y2 (en) | Switch | |
JP2004281302A (en) | Gas-insulated circuit breaker and gas-insulated switchgear | |
JPS6254220B2 (en) | ||
JP3369216B2 (en) | Disconnector with resistance | |
JP4111504B2 (en) | Switchgear | |
JP3386282B2 (en) | Bushing unit for power distribution equipment | |
JPH0337923A (en) | Bypass terminal-attached movable mold cover | |
JPH0140111Y2 (en) | ||
JPH0440262Y2 (en) | ||
SU748568A1 (en) | Automatic short-circuiting device | |
JP2946726B2 (en) | Gas insulated switchgear | |
JP3288556B2 (en) | Switchgear | |
JP4579440B2 (en) | Gas insulated switchgear | |
JPS6029284Y2 (en) | conduit electrical equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080215 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090215 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100215 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100215 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110215 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120215 Year of fee payment: 10 |
|
LAPS | Cancellation because of no payment of annual fees |