JPH05334942A - Disconnecting switch with resistor - Google Patents
Disconnecting switch with resistorInfo
- Publication number
- JPH05334942A JPH05334942A JP13867892A JP13867892A JPH05334942A JP H05334942 A JPH05334942 A JP H05334942A JP 13867892 A JP13867892 A JP 13867892A JP 13867892 A JP13867892 A JP 13867892A JP H05334942 A JPH05334942 A JP H05334942A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- epoxy resin
- resistance
- shape
- side contact
- 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.)
- Pending
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、変電所において使用さ
れる抵抗付き断路器に係り、特に電気的・機械的に優れ
た信頼性を有する抵抗体を使用した抵抗付き断路器の構
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disconnector with resistance used in a substation, and more particularly to a structure of the disconnector with resistance using a resistor having excellent electrical and mechanical reliability.
【0002】[0002]
【従来の技術】一般的にガス絶縁開閉装置は、3〜6気
圧程度のSF6 ガスなどの絶縁媒体を充填した密閉容器
内に、遮断器、断路器、接地開閉器、変流器、計器用変
圧器などの開閉操作に必要な機器を収納して構成されて
いる。この中で、断路器の開閉操作は、通常、遮断器を
開いた状態で行われる。このような断路器の開閉操作に
伴ない、断路器サージと呼ばれるサージが断路器の極間
において発生し、ガス絶縁開閉装置内を伝播する。この
断路器サージは、UHVクラスではガス絶縁開閉装置の
絶縁を脅かす程度に大きくなるため、何等かの対応が必
要となる。2. Description of the Related Art Generally, a gas-insulated switchgear comprises a circuit breaker, a disconnector, a grounding switch, a current transformer, and a meter in a sealed container filled with an insulating medium such as SF 6 gas at a pressure of 3 to 6 atmospheres. It is configured to house equipment necessary for opening and closing operations such as transformers. Among them, the opening / closing operation of the disconnecting switch is usually performed with the breaker opened. Along with such switching operation of the disconnecting switch, a surge called disconnecting switch surge is generated between the poles of the disconnecting switch and propagates in the gas-insulated switchgear. In the UHV class, this disconnector surge becomes so large as to threaten the insulation of the gas insulated switchgear, and therefore some measures must be taken.
【0003】従来から、このような断路器サージの発生
電圧レベルを抑制することを目的として、図4に模式的
に示すような方式の抵抗付き断路器が考えられている。
この図に示すように、SF6 ガスなどの絶縁媒体を充填
したタンク1内には、可動側接触部2と固定側接触部3
とが同軸線上に配置され、この接触部2,3間に可動接
触子4が配置されており、この可動接触子4が接触部
2,3の軸方向に直線的に摺動することにより、断路器
の開閉が行われるように構成されている。すなわち、可
動側接触部2と固定側接触部3の内周部には、それぞ
れ、可動接触子4と接触するフィンガー5,6が設けら
れており、可動接触子4は、可動側接触部2のフィンガ
ー5と常時接触する一方で、固定側接触部3のフィンガ
ー6と接離可能に構成されている。Conventionally, for the purpose of suppressing the voltage level of such a disconnector surge, a disconnector with a resistor of the type as schematically shown in FIG. 4 has been considered.
As shown in this figure, a movable side contact portion 2 and a fixed side contact portion 3 are provided in a tank 1 filled with an insulating medium such as SF 6 gas.
Are arranged on a coaxial line, the movable contact 4 is arranged between the contact portions 2 and 3, and the movable contact 4 slides linearly in the axial direction of the contact portions 2 and 3, It is configured to open and close the disconnector. That is, fingers 5 and 6 that come into contact with the movable contact 4 are provided on the inner peripheral portions of the movable contact 2 and the fixed contact 3, respectively. While being constantly in contact with the finger 5 of No. 3, the finger 6 of the fixed side contact portion 3 can be brought into contact with and separated from the finger 6.
【0004】そして、固定側接触部3の周囲には、電界
緩和用の抵抗体シールド7が配置されており、断路器投
入時において可動接触子4と抵抗体シールド7の抵抗接
点8との間にギャップgを有するように構成されてい
る。このギャップgは、断路器の開閉操作途中、可動接
触子4の先端が抵抗接点8の近傍に位置する時刻におい
て断路器極間に再点弧が発生した場合、抵抗接点8と可
動接触子4がフラッシオーバによって通電し、この時刻
においては可動接触子4と固定側接触部3やタンク1と
が絶縁破壊を起こすことのないよう、絶縁強調面からの
検討を行って決定される。さらに、この抵抗体シールド
7は、断路器サージを十分に抑制できる値の抵抗体9を
介して固定側接触部3に接続されている。断路器の開閉
操作途中には、可動接触子4と抵抗接点8との間で再点
弧が複数回発生するが、この時の断路器サージレベルは
抵抗体9によって十分抑制される。A resistor shield 7 for mitigating an electric field is arranged around the fixed side contact portion 3, and between the movable contact 4 and the resistance contact 8 of the resistor shield 7 when the disconnector is turned on. To have a gap g. This gap g is defined by the resistance contact 8 and the movable contactor 4 when re-ignition occurs between the disconnector poles at the time when the tip of the movable contactor 4 is located near the resistance contact 8 during the opening / closing operation of the disconnector. Is energized by flashover, and at this time, the movable contactor 4 and the fixed side contact portion 3 and the tank 1 are determined by conducting an examination from the insulation emphasis surface so as not to cause dielectric breakdown. Further, the resistor shield 7 is connected to the fixed side contact portion 3 via the resistor 9 having a value capable of sufficiently suppressing the disconnector surge. During the opening / closing operation of the disconnector, re-ignition occurs a plurality of times between the movable contactor 4 and the resistance contact 8, but the disconnector surge level at this time is sufficiently suppressed by the resistor 9.
【0005】図5は、以上のような方式を採用した従来
の抵抗付き断路器の構成の一例を示す構成図である。こ
の図に示すように、SF6 ガスを充填したタンク1内に
は、可動側接触部2と固定側接触部3とが上下方向に同
軸線上に配置され、この間を可動接触子4が直線摺動す
ることにより断路器の開閉が行われるようになってい
る。また、抵抗体シールド7は、可動側接触部2と固定
側接触部3の間に配置され、その内周側端部には抵抗接
点8が設けられている。この抵抗接点8は、投入状態で
は可動接触子4と一定のギャップを介して対向するよう
に構成されている。そして、抵抗体シールド7の外周側
端部の下部には、下方に伸びる複数個の(図では一例と
して2個)の抵抗体9が、固定側接触部3の外周部に配
置され、抵抗体シールド7に取り付けられており、これ
らの抵抗体9の下端部は、固定側接触部3に取り付けら
れている。FIG. 5 is a block diagram showing an example of the configuration of a conventional disconnector with a resistor that employs the above-described system. As shown in this figure, a movable side contact portion 2 and a fixed side contact portion 3 are arranged coaxially in the up-down direction in a tank 1 filled with SF 6 gas, and a movable contact 4 slides linearly between them. The disconnector is opened and closed by moving. Further, the resistor shield 7 is arranged between the movable side contact portion 2 and the fixed side contact portion 3, and a resistance contact 8 is provided at the inner peripheral side end portion thereof. The resistance contact 8 is configured to face the movable contact 4 with a certain gap in the closed state. A plurality of (two as an example in the figure) resistors 9 extending downward are arranged on the outer peripheral portion of the fixed side contact portion 3 below the outer peripheral side end portion of the resistor shield 7. The resistors 9 are attached to the shield 7, and the lower ends of these resistors 9 are attached to the fixed-side contact portion 3.
【0006】図6は図5における固定側接触部3近傍の
構成及び再点弧が発生した場合の等電位線10の分布を
示す図である。すなわち、再点弧時には、サージ電圧に
より、抵抗接点8の電位が固定側接触部3より高くなる
ために、図6に示すような等電位線10の分布を生じ、
抵抗体9に電界が集中する。この場合、抵抗体9の材料
面、構造面については、現在検討がなされているが、例
えば、抵抗線を用いた抵抗体の使用が考えられている。
図7は、このような抵抗線を用いた抵抗体の一例を示す
図であり、(A)は構成図、(B)は断面図である。こ
の図7に示す抵抗体9は、抵抗線21とその両端の電極
22から構成されている。すなわち、2本の抵抗線21
を、絶縁棒23の周囲に互いに逆向きに巻き付け、その
両端から電極22を引き出すと共に、接着剤24で固定
して構成されている。FIG. 6 is a diagram showing the configuration in the vicinity of the fixed side contact portion 3 in FIG. 5 and the distribution of the equipotential lines 10 when re-ignition occurs. That is, at the time of re-ignition, the surge voltage causes the potential of the resistance contact 8 to become higher than that of the fixed-side contact portion 3, so that a distribution of equipotential lines 10 as shown in FIG.
The electric field concentrates on the resistor 9. In this case, the material surface and the structural surface of the resistor 9 are currently being studied, but for example, use of a resistor using a resistance wire is considered.
FIG. 7 is a diagram showing an example of a resistor using such a resistance wire, (A) is a configuration diagram, and (B) is a sectional view. The resistor 9 shown in FIG. 7 is composed of a resistance wire 21 and electrodes 22 at both ends thereof. That is, the two resistance wires 21
Are wound around the insulating rod 23 in opposite directions, the electrodes 22 are drawn out from both ends of the insulating rod 23, and the electrodes 22 are fixed by an adhesive 24.
【0007】[0007]
【発明が解決しようとする課題】ところで、断路器は機
械的操作を伴なう機器であるため、開閉操作に伴ない大
きな機械的振動が発生し、さらにその操作が多頻度に及
ぶことが考えられ、このような条件下において抵抗体の
電気的性能及び機械的強度を長期にわたって確保するこ
とは非常に重要である。しかしながら、固定側接触部の
周囲に配置する抵抗体として、図7に示すように、抵抗
体として抵抗線を用いた構成を取る場合、抵抗体自身の
機械的強度及びその長期信頼性を十分に確保することが
できない。また、抵抗線の固定に接着剤を用いた場合、
接着剤と抵抗線や絶縁棒との界面での電気的性能が低下
する可能性もある。さらに、再点弧時には、前述のよう
に、抵抗体に電界が集中するので、この電界集中による
電気性能低下を防ぐ目的で、抵抗体と主回路間の絶縁距
離、抵抗体とタンク間の絶縁距離を十分に確保する必要
があり、このことが、機器全体の縮小化の妨げとなって
いるという問題もある。By the way, since the disconnecting switch is a device that involves mechanical operation, it is considered that a large mechanical vibration occurs due to the opening and closing operation, and that the operation occurs frequently. It is very important to secure the electrical performance and mechanical strength of the resistor under such conditions for a long period of time. However, as shown in FIG. 7, when a resistor wire is used as the resistor element arranged around the fixed side contact portion, the mechanical strength of the resistor element itself and its long-term reliability are sufficient. Cannot be secured. If an adhesive is used to fix the resistance wire,
The electrical performance at the interface between the adhesive and the resistance wire or insulating rod may be reduced. Furthermore, during re-ignition, the electric field concentrates on the resistor as described above.To prevent the electrical performance from deteriorating due to this electric field concentration, the insulation distance between the resistor and the main circuit, and the insulation between the resistor and the tank There is also a problem that it is necessary to secure a sufficient distance, which hinders downsizing of the entire device.
【0008】本発明は、以上のような従来技術の課題を
解決するために提案されたものであり、その目的は、抵
抗体の電気的性能及び機械的強度を、製作段階から運転
後の長期にわたって十分に確保することが可能であり、
信頼性が高く、機器全体の縮小化に貢献可能な、優れた
抵抗付き断路器を提供することである。The present invention has been proposed in order to solve the problems of the prior art as described above, and its purpose is to improve the electrical performance and mechanical strength of a resistor from a manufacturing stage to a long-term operation. It is possible to secure enough
It is to provide an excellent disconnecting switch with resistance that is highly reliable and can contribute to downsizing of the entire device.
【0009】[0009]
【課題を解決するための手段】本発明による抵抗付き断
路器は、絶縁媒体を封入した密閉容器内に、可動側接触
部と固定側接触部とが対向して配置され、前記固定側接
触部の外周部に抵抗体を備えた抵抗付き断路器におい
て、前記抵抗体が抵抗線の一部または全体をエポキシ樹
脂注型して構成され、抵抗線の巻き形状またはエポキシ
樹脂外形形状の断面が、楕円形状、小判形状、または楕
円の一部を変形してなる楕円変形形状であることを特徴
としている。In the disconnector with resistance according to the present invention, a movable side contact portion and a fixed side contact portion are arranged so as to face each other in a sealed container in which an insulating medium is sealed, and the fixed side contact portion is provided. In a disconnecting switch with a resistance provided with a resistor in the outer peripheral part of the resistor, the resistor is formed by casting a part or the whole of the resistance wire in an epoxy resin, and the winding shape of the resistance wire or the cross section of the epoxy resin outer shape, It is characterized by an elliptical shape, an oval shape, or an elliptical deformed shape obtained by deforming a part of the ellipse.
【0010】[0010]
【作用】以上のように構成された本発明の抵抗付き断路
器によれば、抵抗線をエポキシ樹脂にて注型して抵抗体
を構成することにより、エポキシ樹脂によって十分な電
気的性能及び機械的強度を確保できるため、断路器の開
閉操作に伴なう大きな機械的振動に対しても、抵抗体の
機械的劣化及びそれに伴なう電気的性能の低下を抑制す
ることができる。このため、断路器の運転開始後も、長
期にわたって抵抗体の電気的性能及び機械的強度を十分
に確保することができる。また、抵抗線の巻き形状また
はエポキシ樹脂外形形状の断面を、楕円形状、小判形
状、または楕円変形形状としたことにより、抵抗体への
電界集中が緩和され、等電位線が滑らかになる。従っ
て、電気的性能を十分に確保しながら、抵抗体とタンク
間の絶縁距離を短縮し、機器を縮小化することが可能と
なる。According to the disconnecting switch with resistance of the present invention constructed as described above, the resistance wire is cast by the epoxy resin to form the resistor, so that the epoxy resin has sufficient electric performance and mechanical properties. Since it is possible to secure the mechanical strength, it is possible to suppress the mechanical deterioration of the resistor and the accompanying deterioration of the electrical performance even with respect to a large mechanical vibration associated with the opening / closing operation of the disconnector. Therefore, it is possible to sufficiently secure the electrical performance and mechanical strength of the resistor for a long period of time even after the operation of the disconnector is started. Further, the winding shape of the resistance wire or the cross-section of the epoxy resin outer shape is formed into an elliptical shape, an oval shape, or an elliptical deformation shape, so that the electric field concentration on the resistor is alleviated and the equipotential lines are smoothed. Therefore, it is possible to reduce the insulation distance between the resistor and the tank and to reduce the size of the device while sufficiently ensuring the electrical performance.
【0011】[0011]
【実施例】以下には、本発明による抵抗付き断路器の一
実施例を、図1及び図2を参照して説明する。この場
合、図1は、固定側接触部3近傍の構成及び再点弧が発
生した場合の等電位線10の分布を示す図である。ま
た、図2は、抵抗体を示す図であり、(A)は構成図、
(B)は断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the disconnecting switch with resistance according to the present invention will be described below with reference to FIGS. In this case, FIG. 1 is a diagram showing the configuration in the vicinity of the fixed-side contact portion 3 and the distribution of the equipotential lines 10 when re-ignition occurs. 2 is a diagram showing a resistor, (A) is a configuration diagram,
(B) is a sectional view.
【0012】すなわち、図2に示すように、本実施例に
おいて、抵抗体9は、2本の抵抗線21を互いに逆向き
に巻いて、その両端から電極22を引き出すと共に、抵
抗線21の全体をエポキシ樹脂25で注型して形成され
ている。そして、この抵抗体9の抵抗線21の巻き形状
及びエポキシ樹脂25の外形形状の断面は、共に楕円形
状とされている。そして、図1に示すように、このよう
な構成を有する2個の抵抗体9が、固定側接触部3の外
周部に配置されている。なお、この抵抗体9以外の各部
の構成については、図5に示した従来例と同様とされて
いるため、ここでは説明を省略する。That is, as shown in FIG. 2, in the present embodiment, the resistor 9 has two resistance wires 21 wound in opposite directions, and the electrodes 22 are drawn out from both ends of the resistance wire 21. Is cast with an epoxy resin 25. The cross section of the winding shape of the resistance wire 21 of the resistor 9 and the outer shape of the epoxy resin 25 are both elliptical. Then, as shown in FIG. 1, the two resistors 9 having such a configuration are arranged on the outer peripheral portion of the fixed-side contact portion 3. Since the configuration of each part other than the resistor 9 is the same as that of the conventional example shown in FIG. 5, the description thereof is omitted here.
【0013】以上のような構成を有する本実施例の作用
は次の通りである。まず、エポキシ樹脂は、図7の接着
剤24に比較して十分厚くできるため、抵抗体9の外部
から機械的ストレスを加えても、内部の抵抗線21は断
線したり変形したりしない。また、エポキシ樹脂は、周
知のように、絶縁材料として非常に優れた材料であり、
抵抗線21を電気的に絶縁するという点では、図7に示
した絶縁棒23と接着剤24による構成よりも優れてい
る。さらに、エポキシ樹脂注型技術は、近年の著しい技
術開発により、現在では、ボイドやクラック、その他の
弱点を排除した高品質のエポキシ樹脂注型物を提供でき
る優れた技術として確立されている。The operation of this embodiment having the above construction is as follows. First, since the epoxy resin can be made sufficiently thick as compared with the adhesive 24 in FIG. 7, even if mechanical stress is applied from the outside of the resistor 9, the internal resistance wire 21 is not broken or deformed. Also, as is well known, epoxy resin is a very excellent insulating material,
In terms of electrically insulating the resistance wire 21, it is superior to the configuration of the insulating rod 23 and the adhesive 24 shown in FIG. 7. Further, the epoxy resin casting technique is now established as an excellent technique capable of providing a high-quality epoxy resin casting product in which voids, cracks, and other weak points are eliminated by the remarkable technical development in recent years.
【0014】従って、このような優れたエポキシ樹脂及
びその注型技術を使用して抵抗体9を製作することによ
り、注型段階でのボイドや剥離、クラックなどの問題の
ない、十分な電気的性能及び機械的強度を有する抵抗体
9を得ることができる。そして、この抵抗体9を使用し
て断路器を完成すれば、断路器の開閉動作に伴なう大き
な機械的振動に対しても、抵抗体の機械的劣化を抑制す
ることができ、運転開始後にも、その長期にわたって電
気的性能及び機械的強度を十分に確保することができ
る。また、抵抗線21の巻き形状及びエポキシ樹脂25
の外形形状を共に楕円形状としたことにより、図1に示
すように、抵抗体9の近傍における電界集中が緩和さ
れ、等電位線10が滑らかになる。従って、電気的性能
を十分に確保しながら、従来に比べて抵抗体9とタンク
1間の絶縁距離を短縮し、機器を縮小化することが可能
となる。Therefore, by manufacturing the resistor 9 using such an excellent epoxy resin and its casting technique, there is no problem such as voids, peeling and cracks at the casting stage, and sufficient electrical conductivity is obtained. A resistor 9 having performance and mechanical strength can be obtained. When the disconnector is completed by using the resistor 9, mechanical deterioration of the resistor can be suppressed even with respect to a large mechanical vibration accompanying the opening / closing operation of the disconnector, and the operation is started. Even after that, the electrical performance and mechanical strength can be sufficiently ensured over the long term. Further, the winding shape of the resistance wire 21 and the epoxy resin 25
As shown in FIG. 1, the electric field concentration in the vicinity of the resistor 9 is relaxed and the equipotential lines 10 are smoothed by making both the outer shapes of the elliptical shapes. Therefore, it becomes possible to reduce the insulation distance between the resistor 9 and the tank 1 and to downsize the device as compared with the conventional one, while sufficiently ensuring the electrical performance.
【0015】以上のように、本実施例においては、抵抗
線21の全体をエポキシ樹脂25で注型して抵抗体9を
形成し、かつ、抵抗線21の巻き形状及びエポキシ樹脂
25の外形形状の断面を、共に楕円形状としたことによ
り、抵抗体の電気的性能及び機械的強度を、製作段階か
ら運転後の長期にわたって十分に確保することが可能で
あるため、抵抗付き断路器の電気的・機械的信頼性を従
来に比べて格段に向上できると共に、機器全体の縮小化
に貢献できる。As described above, in this embodiment, the entire resistance wire 21 is cast with the epoxy resin 25 to form the resistor 9, and the winding shape of the resistance wire 21 and the outer shape of the epoxy resin 25 are formed. By making both cross sections oval, the electrical performance and mechanical strength of the resistor can be sufficiently secured from the manufacturing stage to the long term after operation. -It is possible to significantly improve mechanical reliability as compared with the conventional one and contribute to downsizing of the entire device.
【0016】なお、本発明は前記実施例に限定されるも
のではなく、例えば、抵抗線21の巻き形状及びエポキ
シ樹脂25の外形形状の断面は、共に楕円形状とする必
要はなく、少なくとも一方の形状を、楕円形状、小判形
状、または楕円変形形状とすれば十分である。図3は、
本発明の他の複数の実施例に使用する、異なる抵抗体を
示す断面図である。すなわち、まず、図3の(A)は、
抵抗線21の巻き形状を円形状とし、エポキシ樹脂25
の外形形状のみを楕円形状とた抵抗体9を示しており、
共に楕円形状とした図2の抵抗体9に比べて、電界緩和
効果は若干劣るものの、製造の容易化という点で優れて
いる。また、図3の(B)は、(A)とは逆に、抵抗線
21の巻き形状のみを楕円形状とし、エポキシ樹脂25
の外形形状を円形状とした抵抗体9を示しており、共に
楕円形状とした図2の抵抗体9とほぼ同様の電界緩和効
果が得られると共に、機械的強度の向上が期待できる。
さらに、図3の(C)は、抵抗線21の巻き形状及びエ
ポキシ樹脂25の外形形状の断面を、共に小判形状とし
た抵抗体9を示しており、また、図3の(D)は、抵抗
線21の巻き形状及びエポキシ樹脂25の外形形状の断
面を、共に、略弓形状(楕円の一部の湾曲方向及び曲率
を変えてなる楕円変形形状)とした抵抗体9を示してい
る。これらの抵抗体9においても、図2の抵抗体9とほ
ぼ同様の効果を得ることができる。The present invention is not limited to the above embodiment, and for example, the winding shape of the resistance wire 21 and the outer shape of the epoxy resin 25 need not be elliptical in cross section. It is sufficient if the shape is an elliptical shape, an oval shape, or an elliptical deformed shape. Figure 3
It is sectional drawing which shows a different resistor used for other some Example of this invention. That is, first, in FIG.
The winding shape of the resistance wire 21 is circular, and the epoxy resin 25
Shows the resistor 9 in which only the outer shape of the resistor is oval,
Although the electric field relaxation effect is slightly inferior to that of the resistor 9 of FIG. 2 in which both have an elliptical shape, it is excellent in terms of facilitating manufacturing. Further, in FIG. 3B, contrary to FIG. 3A, only the winding shape of the resistance wire 21 has an elliptical shape, and the epoxy resin 25 is used.
2 shows a resistor 9 having a circular outer shape. The electric field mitigating effect is almost the same as that of the resistor 9 of FIG. 2 which is both elliptical, and improvement in mechanical strength can be expected.
Further, FIG. 3C shows a resistor 9 in which the cross section of the winding shape of the resistance wire 21 and the outer shape of the epoxy resin 25 are both oval, and FIG. The cross section of the winding shape of the resistance wire 21 and the cross section of the outer shape of the epoxy resin 25 are both substantially bow-shaped (the elliptical deformed shape in which the bending direction and the curvature of a part of the ellipse are changed). With these resistors 9 as well, it is possible to obtain substantially the same effects as the resistors 9 of FIG.
【0017】[0017]
【発明の効果】以上述べたように、本発明においては、
抵抗線の一部または全体をエポキシ樹脂注型して抵抗体
を構成し、かつ、抵抗線の巻き形状またはエポキシ樹脂
外形形状の断面を、楕円形状、小判形状、または楕円変
形形状とすることにより、抵抗体の電気的性能及び機械
的強度を、製作段階から運転後の長期にわたって十分に
確保することが可能であり、信頼性が高く、機器全体の
縮小化に貢献可能な、優れた抵抗付き断路器を提供する
ことができる。As described above, according to the present invention,
By forming a resistor by casting a part or all of the resistance wire in epoxy resin, and making the winding shape of the resistance wire or the cross section of the epoxy resin outer shape an elliptical shape, an oval shape, or an elliptical deformation shape. With excellent resistance, it is possible to secure the electrical performance and mechanical strength of the resistor sufficiently from the manufacturing stage to the long term after operation, and it is highly reliable and can contribute to downsizing of the entire device. A disconnector can be provided.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明による抵抗付き断路器の一実施例におい
て、固定側接触部近傍の構成及び再点弧が発生した場合
の等電位線の分布を示す図。FIG. 1 is a diagram showing a configuration in the vicinity of a fixed side contact portion and a distribution of equipotential lines when re-ignition occurs in an embodiment of a disconnector with resistance according to the present invention.
【図2】図1の抵抗体を示す図であり、(A)は構成
図、(B)は断面図。2A and 2B are diagrams showing the resistor of FIG. 1, in which FIG. 2A is a configuration diagram and FIG. 2B is a sectional view.
【図3】本発明による抵抗付き断路器の他の複数の実施
例に使用する、異なる抵抗体を示す断面図。FIG. 3 is a cross-sectional view showing different resistors used in other embodiments of the disconnecting switch with resistance according to the present invention.
【図4】抵抗付き断路器の方式を示す模式図。FIG. 4 is a schematic diagram showing a system of a disconnecting switch with resistance.
【図5】図4の抵抗付き断路器の一例を示す構成図。5 is a configuration diagram showing an example of a disconnecting switch with resistance of FIG.
【図6】図5における固定側接触部近傍の構成及び再点
弧が発生した場合の等電位線の分布を示す図。6 is a diagram showing a configuration in the vicinity of the fixed-side contact portion in FIG. 5 and a distribution of equipotential lines when re-ignition occurs.
【図7】従来の抵抗体の一例を示す図であり、(A)は
構成図、(B)は断面図。7A and 7B are diagrams showing an example of a conventional resistor, in which FIG. 7A is a configuration diagram and FIG. 7B is a sectional view.
1…タンク 2…可動側接触部 3…固定側接触部 4…可動接触子 5,6…フィンガー 7…抵抗体シールド 8…抵抗接点 9…抵抗体 10…等電位線 21…抵抗線 22…電極 23…絶縁棒 24…接着剤 25…エポキシ樹脂 DESCRIPTION OF SYMBOLS 1 ... Tank 2 ... Movable side contact part 3 ... Fixed side contact part 4 ... Movable contactor 5,6 ... Finger 7 ... Resistor shield 8 ... Resistive contact 9 ... Resistor 10 ... Equipotential line 21 ... Resistance line 22 ... Electrode 23 ... Insulating rod 24 ... Adhesive 25 ... Epoxy resin
Claims (1)
側接触部と固定側接触部とが対向して配置され、前記固
定側接触部の外周部に抵抗体を備えた抵抗付き断路器に
おいて、 前記抵抗体が抵抗線の一部または全体をエポキシ樹脂注
型して構成され、抵抗線の巻き形状またはエポキシ樹脂
外形形状の断面が、楕円形状、小判形状、または楕円の
一部を変形してなる楕円変形形状であることを特徴とす
る抵抗付き断路器。1. A disconnecting switch with resistance, wherein a movable side contact portion and a fixed side contact portion are arranged to face each other in a hermetically sealed container in which an insulating medium is sealed, and a resistor is provided on an outer peripheral portion of the fixed side contact portion. In, the resistor is formed by casting a part or the whole of the resistance wire in an epoxy resin, and the winding shape of the resistance wire or the cross section of the epoxy resin outer shape is an elliptical shape, an oval shape, or a part of the ellipse is deformed. A disconnecting switch with resistance, which is characterized by having an elliptical deformed shape.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13867892A JPH05334942A (en) | 1992-05-29 | 1992-05-29 | Disconnecting switch with resistor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13867892A JPH05334942A (en) | 1992-05-29 | 1992-05-29 | Disconnecting switch with resistor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05334942A true JPH05334942A (en) | 1993-12-17 |
Family
ID=15227550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13867892A Pending JPH05334942A (en) | 1992-05-29 | 1992-05-29 | Disconnecting switch with resistor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05334942A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112397336A (en) * | 2019-08-15 | 2021-02-23 | 西安西电开关电气有限公司 | Circuit breaker and mounting structure of closing resistor thereof |
CN112397264A (en) * | 2019-08-15 | 2021-02-23 | 西安西电开关电气有限公司 | Resistor string and resistor disc thereof |
-
1992
- 1992-05-29 JP JP13867892A patent/JPH05334942A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112397336A (en) * | 2019-08-15 | 2021-02-23 | 西安西电开关电气有限公司 | Circuit breaker and mounting structure of closing resistor thereof |
CN112397264A (en) * | 2019-08-15 | 2021-02-23 | 西安西电开关电气有限公司 | Resistor string and resistor disc thereof |
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