JPH05334943A - Disconnecting switch with resistor - Google Patents
Disconnecting switch with resistorInfo
- Publication number
- JPH05334943A JPH05334943A JP13868892A JP13868892A JPH05334943A JP H05334943 A JPH05334943 A JP H05334943A JP 13868892 A JP13868892 A JP 13868892A JP 13868892 A JP13868892 A JP 13868892A JP H05334943 A JPH05334943 A JP H05334943A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- side contact
- fixed
- contact portion
- movable
- 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
Landscapes
- 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２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 disconnecting switch surge, a disconnecting switch with resistance of a system as schematically shown in FIG. 2 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 side contact portion 2 and the fixed side contact portion 3, respectively. While being in constant contact with the finger 5 of No. 5, 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、電解
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。この抵抗体９の材料
面、構造面については、現在検討がなされている。A resistor shield 7 for electrolytic relaxation 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. The material and structural aspects of the resistor 9 are currently being studied.
【０００５】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図５乃至図７に示す。この場
合、図５は断路器全体を示す構成図、図６は図５のセラ
ミックス抵抗体を示す構成図、図７は図５のＸ矢視図を
示している。まず、図５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。この可動接触子４は、タンク１の
上部に取り付けられた操作装置１０によって、開閉機構
１１を介して駆動されるようになっている。すなわち、
操作装置１０の回転駆動力が、開閉機構１１によって回
転運動から直線運動に変換され、可動接触子４に伝達さ
れるように構成されている。5 to 7 show an example of the configuration of a conventional disconnecting switch with a resistance adopting the above-mentioned method. In this case, FIG. 5 is a block diagram showing the whole disconnector, FIG. 6 is a block diagram showing the ceramic resistor of FIG. 5, and FIG. 7 is a view taken in the direction of the arrow X in FIG. First, as shown in FIG. 5, a movable side contact portion 2 and a fixed side contact portion 3 are arranged coaxially in the vertical direction in a tank 1 filled with SF 6 gas, and a movable contactor 4 is provided between them. The disconnector is opened and closed by sliding in a straight line. The movable contactor 4 is driven by an operating device 10 attached to the upper portion of the tank 1 via an opening / closing mechanism 11. That is,
The rotational driving force of the operating device 10 is configured to be converted from the rotational movement to the linear movement by the opening / closing mechanism 11 and transmitted to the movable contact 4.
【０００６】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とギャップｇを介して対向する
ように構成されている。図５及び図７に示すように、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（図では一例として４個）のセラミックス抵抗体
２１が固定側接触部３の周囲に等間隔で配置され、抵抗
体シールド７に取り付けられており、これらのセラミッ
クス抵抗体２１の下端部は、接続部１２によって固定側
接触部３に取り付けられている。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 via the gap g in the closed state. As shown in FIGS. 5 and 7, a plurality (four as an example in the figure) of ceramic resistors 21 extending downward are provided around the fixed-side contact portion 3 at the lower part of the outer peripheral side end of the resistor shield 7. Are attached to the resistor shield 7 at equal intervals, and the lower end portions of these ceramic resistors 21 are attached to the fixed side contact portion 3 by the connecting portion 12.
【０００７】より詳細には、図６に示すように、セラミ
ックス抵抗体２１は、リング状の抵抗体２１ａを複数積
層し、その中空部に絶縁ボルト２１ｂを貫通させて構成
されている。そして、この絶縁ボルト２１ｂの一端が抵
抗体シールド７に取り付けられると共に、他端が接続部
１２に取り付けられることで、セラミックス抵抗体２１
及び抵抗体シールド７が接続部１２に対して（従って固
定側接触部３に対して）支持されている。この場合、絶
縁ボルト２１ｂの機械的強度は比較的弱いため、その強
度を補い、セラミックス抵抗体２１及び抵抗体シールド
７を接続部１２に対して確実に支持する目的で、図７に
示すように、隣接するセラミックス抵抗体２１間には、
同様に下方に伸びる絶縁ロッド２２が各１本ずつ計４本
配置されている。More specifically, as shown in FIG. 6, the ceramic resistor 21 is formed by laminating a plurality of ring-shaped resistors 21a and penetrating an insulating bolt 21b in the hollow portion thereof. Then, one end of this insulating bolt 21b is attached to the resistor shield 7 and the other end is attached to the connecting portion 12, so that the ceramic resistor 21
And the resistor shield 7 is supported on the connection 12 (and thus on the fixed contact 3). In this case, since the mechanical strength of the insulating bolt 21b is relatively weak, as shown in FIG. 7, for the purpose of supplementing the mechanical strength and securely supporting the ceramic resistor 21 and the resistor shield 7 with respect to the connecting portion 12. , Between the adjacent ceramic resistors 21,
Similarly, four insulating rods 22 each extending downward are arranged, one in total.
【０００８】なお、図５に示すように、可動側接触部２
及び固定側接触部３は、タンク１の上下端部に対して、
それぞれ絶縁筒１３によって支持されている。また、可
動側接触部２及び固定側接触部３の側面からは、接続導
体１４，１５がそれぞれ水平方向に導出され、絶縁スペ
ーサ１６により外部に引き出されている。この場合、固
定側接触部３より導出される接続導体１５は、接続部１
２の下方に配置されている。As shown in FIG. 5, the movable side contact portion 2
And the fixed side contact portion 3 with respect to the upper and lower end portions of the tank 1.
Each is supported by an insulating tube 13. In addition, the connection conductors 14 and 15 are respectively led out in the horizontal direction from the side surfaces of the movable side contact portion 2 and the fixed side contact portion 3, and are drawn out by the insulating spacer 16. In this case, the connection conductor 15 led out from the fixed-side contact portion 3 has the connection portion 1
It is located below 2.
【０００９】[0009]
【発明が解決しようとする課題】ところで、図５に示す
ように、抵抗体として、セラミックス抵抗体２１を使用
した場合には、前述したように、機械的強度を補い、セ
ラミックス抵抗体２１及び抵抗体シールド７を接続部１
２に対して確実に支持する目的で、図７に示すように、
セラミックス抵抗体２１と平行に、複数本（図では一例
として４本）の絶縁ロッド２２を配置する必要がある。
この結果、抵抗体シールド７と接続部１２との間の空間
Ｂにおいては、図７に示すように、セラミックス抵抗体
２１と絶縁ロッド２２とが、狭い間隔Ａで多数配置され
る形となり、構造が複雑化する欠点がある。By the way, as shown in FIG. 5, when the ceramic resistor 21 is used as the resistor, as described above, the mechanical strength is compensated for by the ceramic resistor 21 and the resistor. Body shield 7 connecting part 1
As shown in FIG.
It is necessary to dispose a plurality of (four as an example in the figure) insulating rods 22 in parallel with the ceramic resistor 21.
As a result, in the space B between the resistor shield 7 and the connection portion 12, as shown in FIG. 7, a large number of ceramic resistors 21 and insulating rods 22 are arranged at a narrow interval A, and the structure is formed. However, there is a drawback that it becomes complicated.
【００１０】また、固定側接触部３においては、接続導
体１５を配置することに加えて、抵抗体シールド７とセ
ラミックス抵抗体２１、及びセラミックス抵抗体を固定
側接触部３に接続する接続部１２を配置する必要があ
り、特に、図５から明らかなように、セラミックス抵抗
体２１の長さが長いため、固定側接触部３全体の軸方向
寸法が長くなっている。この結果、断路器全体の寸法が
大型化する欠点がある。Further, in the fixed side contact portion 3, in addition to the connection conductor 15 being arranged, the resistor shield 7 and the ceramic resistor 21, and the connecting portion 12 for connecting the ceramic resistor to the fixed side contact portion 3. In particular, as is clear from FIG. 5, since the ceramic resistor 21 has a long length, the fixed contact portion 3 as a whole has a large axial dimension. As a result, there is a drawback in that the size of the whole disconnecting switch becomes large.
【００１１】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、機
械的強度の高い抵抗体を使用し、抵抗体付近の構造を簡
略化すると共に、固定側接触部の軸方向寸法を短縮し、
断路器全体の小型・簡略化に貢献し得るような、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 object is to use a resistor having high mechanical strength and to simplify the structure in the vicinity of the resistor. And shorten the axial dimension of the fixed side contact part,
An object of the present invention is to provide an excellent disconnecting switch with resistance, which can contribute to downsizing and simplification of the entire disconnecting switch.
【００１２】[0012]
【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同軸線上に配置され、前記可動側
接触部と前記固定側接触部の間に可動接触子が配置され
ると共に、前記固定側接触部の周囲に抵抗体シールドが
配置され、この抵抗体シールドが抵抗体を介して前記固
定側接触部に接続され、さらに、前記可動側接触部と前
記固定側接触部から接続導体がそれぞれ導出された構造
を有しており、前記可動接触子を操作することによって
電気回路の開閉を行う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
構成されたことを特徴としている。この場合、前記固定
側接触部から導出される接続導体は、前記抵抗体が前記
固定側接触部に接続される接続部と前記抵抗体シールド
との間の抵抗体配置空間に配置されることが望ましい。
また、具体的には、抵抗体は抵抗線を無誘導巻きにして
構成され、さらに、抵抗線としては、被覆した抵抗線が
使用され、密着巻きされることが可能である。通常の場
合、抵抗体は、固定側接触部の周囲に等間隔で複数個配
置され、典型的には３個配置される。In a disconnector with resistance according to the present invention, a movable side contact portion and a fixed side contact portion are coaxially arranged in a hermetically sealed container containing an insulating medium, and the movable side contact portion is provided. A movable contact is disposed between the fixed contact portion and the fixed contact portion, and a resistor shield is disposed around the fixed contact portion, and the resistor shield is connected to the fixed contact portion via a resistor. In addition, in the disconnector with resistance, which has a structure in which connection conductors are respectively derived from the movable side contact portion and the fixed side contact portion, and which opens and closes an electric circuit by operating the movable contactor. The resistor is formed by casting a part or the whole of the resistance wire in an epoxy resin. In this case, the connection conductor led out from the fixed-side contact portion may be arranged in the resistor-arranged space between the resistor-shield and the connection portion where the resistor is connected to the fixed-side contact portion. desirable.
Further, specifically, the resistor is formed by non-inductively winding a resistance wire, and a coated resistance wire is used as the resistance wire, which can be closely wound. In the usual case, a plurality of resistors are arranged at equal intervals around the fixed-side contact portion, and typically three resistors are arranged.
【００１３】[0013]
【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
を構成しているため、エポキシ樹脂によって機械的強度
が向上し、十分な機械的強度を有する抵抗体を得ること
ができる。従って、この抵抗体のみによって抵抗体自身
及び抵抗体シールドを支持できるため、抵抗体の近傍に
補強用の絶縁ロッドを配置する必要がなくなる。According to the disconnector with resistance of the present invention configured as described above, since the resistance wire is cast by the epoxy resin to form the resistor, the epoxy resin improves the mechanical strength. Therefore, a resistor having sufficient mechanical strength can be obtained. Therefore, since the resistor itself and the resistor shield can be supported only by this resistor, it is not necessary to dispose a reinforcing insulating rod in the vicinity of the resistor.
【００１４】また、抵抗付き断路器における固定側接触
部の軸方向寸法を短縮するための一つの方法として、抵
抗体の配置空間に、固定側接触部から導出される接続導
体を配置することが考えられる。この場合、前述した従
来例のように、抵抗体としてセラミックス抵抗体を使用
した場合には、抵抗体配置空間において、セラミックス
抵抗体と絶縁ロッドとが狭い間隔で多数配置される形と
なるため、この抵抗体配置空間に、固定側接触部から導
出される接続導体を配置することは本質的に不可能であ
る。すなわち、抵抗体としてセラミックス抵抗体を使用
する限り、固定側接触部の軸方向寸法を短縮することは
不可能である。Further, as one method for reducing the axial dimension of the fixed-side contact portion in the disconnector with resistance, a connecting conductor led out from the fixed-side contact portion is arranged in the arrangement space of the resistor. Conceivable. In this case, when a ceramic resistor is used as the resistor as in the conventional example described above, in the resistor arrangement space, a large number of ceramic resistors and insulating rods are arranged at narrow intervals, It is essentially impossible to dispose the connection conductor led out from the fixed side contact portion in this resistor disposition space. That is, as long as a ceramic resistor is used as the resistor, it is impossible to reduce the axial dimension of the fixed-side contact portion.
【００１５】これに対し、抵抗体として、抵抗線をエポ
キシ樹脂にて注型してなる抵抗体を使用する本発明で
は、前述のように補強用の絶縁ロッドを省略できるた
め、抵抗体が固定側接触部に接続される接続部と抵抗体
シールドとの間の空間における抵抗体間の隙間の寸法を
大きくすることができる。従って、この空間に、固定側
接触部から導出される接続導体を配置することができ
る。すなわち、抵抗体と接続導体を固定側接触部の軸方
向における同じ位置に配置できるため、軸方向における
異なる位置に並べて配置した場合に比べて、固定側接触
部の軸方向寸法を格段に短縮できる。On the other hand, in the present invention in which the resistance wire is cast by molding the resistance wire with the epoxy resin as the resistance element, the insulating rod for reinforcement can be omitted as described above, so that the resistance element is fixed. It is possible to increase the size of the gap between the resistors in the space between the connecting portion connected to the side contact portion and the resistor shield. Therefore, the connection conductor led out from the fixed-side contact portion can be arranged in this space. That is, since the resistor and the connecting conductor can be arranged at the same position in the axial direction of the fixed-side contact portion, the axial dimension of the fixed-side contact portion can be significantly shortened as compared with the case where they are arranged side by side at different positions in the axial direction. ..
【００１６】[0016]
【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、図３、及び図４を参照して説明する。こ
の場合、図１は断路器全体を示す構成図、図３は図１の
Ｘ矢視図、図４は図１の抵抗体を示す構成図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the disconnecting switch with resistance according to the present invention will be described below with reference to FIGS. 1, 3 and 4. In this case, FIG. 1 is a configuration diagram showing the whole disconnecting switch, FIG. 3 is a diagram viewed from the arrow X in FIG. 1, and FIG. 4 is a configuration diagram showing the resistor in FIG.
【００１７】まず、本実施例の抵抗付き断路器の方式
は、図２の模式図を使用して前に説明した抵抗付き断路
器の方式と同様であり、その基本的な構成は、図５に示
した従来例と同様である。すなわち、図１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。この可動接触
子４は、タンク１の上部に取り付けられた操作装置１０
によって、開閉機構１１を介して駆動されるようになっ
ており、操作装置１０の回転駆動力が、開閉機構１１に
よって回転運動から直線運動に変換され、可動接触子４
に伝達されるように構成されている。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とギ
ャップｇを介して対向するように構成されている。First, the method of the disconnecting switch with resistance of the present embodiment is similar to the method of the disconnecting switch with resistance described above with reference to the schematic diagram of FIG. 2, and its basic configuration is shown in FIG. This is the same as the conventional example shown in FIG. That is, as shown in FIG. 1, a movable side contact portion 2 and a fixed side contact portion 3 are arranged coaxially in the vertical direction in a tank 1 filled with SF 6 gas, and a movable contactor 4 is provided between them. The disconnector is opened and closed by sliding in a straight line. The movable contactor 4 is provided with an operating device 10 attached to the upper part of the tank 1.
Is driven via the opening / closing mechanism 11, and the rotational driving force of the operating device 10 is converted from the rotational movement to the linear movement by the opening / closing mechanism 11, and the movable contact 4 is moved.
Is configured to be transmitted to. 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 via the gap g in the closed state.
【００１８】そして、本実施例においては、図１及び図
３に示すように、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３個の抵抗体９が固定側接触部３の
周囲に等間隔で配置され、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、接続部１２
によって固定側接触部３に取り付けられている。この抵
抗体９は、図４に示すように、上下の両端に設けられた
電極９ａ，９ｂと、互いに逆向き（従って無誘導）に巻
かれた抵抗線９ｃ，９ｄとを備えており、抵抗線９ｃ，
９ｄの全体をエポキシ樹脂９ｅで注型して構成されてい
る。この場合、抵抗線９ｃ，９ｄには絶縁被覆が施され
ており、抵抗線９ｃ，９ｄは互いに密着状態で巻かれて
いる。また、これらの３個の抵抗体９を配置した抵抗体
シールド７と接続部１２との間の空間Ｂにおける、抵抗
体９間の隙間の一つには、固定側接触部３から導出され
る接続導体１５が水平方向に配置され、絶縁スペーサ１
６により外部に引き出されている。In the present embodiment, as shown in FIGS. 1 and 3, three resistors 9 extending downward are provided at the lower portion of the outer peripheral side end of the resistor shield 7 and the fixed side contact portion 3 is provided. Are attached to the resistor shield 7 at equal intervals around, and the lower ends of these resistors 9 are connected to the connecting portion 12.
Is attached to the fixed side contact portion 3. As shown in FIG. 4, the resistor 9 includes electrodes 9a and 9b provided at both upper and lower ends, and resistance wires 9c and 9d wound in directions opposite to each other (hence, non-induction). Line 9c,
The entire 9d is cast with an epoxy resin 9e. In this case, the resistance wires 9c and 9d are covered with an insulating coating, and the resistance wires 9c and 9d are wound in close contact with each other. Further, in the space B between the resistor shield 7 in which these three resistors 9 are arranged and the connecting portion 12, one of the gaps between the resistors 9 is led out from the fixed side contact portion 3. The connecting conductors 15 are arranged in the horizontal direction, and the insulating spacer 1
It is pulled out to the outside by 6.
【００１９】なお、このような抵抗体９及びその周辺以
外の構成については、図５に示した従来例と同様であ
る。すなわち、可動側接触部２の側面からは、接続導体
１４が水平方向に導出され、絶縁スペーサ１６により外
部に引き出されており、また、可動側接触部２及び固定
側接触部３は、タンク１の上下端部に対して、それぞれ
絶縁筒１３によって支持されている。The structure other than the resistor 9 and its surroundings is the same as that of the conventional example shown in FIG. That is, the connection conductor 14 is drawn out in the horizontal direction from the side surface of the movable-side contact portion 2 and is drawn out to the outside by the insulating spacer 16, and the movable-side contact portion 2 and the fixed-side contact portion 3 are connected to the tank 1. The insulating cylinder 13 supports the upper and lower ends, respectively.
【００２０】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。すなわち、本実施例においては、抵
抗線９ｃ，９ｄをエポキシ樹脂９ｅにて注型して抵抗体
９を構成しているため、エポキシ樹脂９ｅによって機械
的強度が向上し、従来のセラミックス抵抗体２１に比べ
て十分に高い機械的強度を持たせることができる。従っ
て、抵抗体９のみにより抵抗体９自身及び抵抗体シール
ド７を支持できるため、セラミックス抵抗体２１を使用
した場合に必要であった絶縁ロッド２２が不要となる。
その上、抵抗体９自身の寸法についても、セラミックス
抵抗体２１に比べて格段に小型化できるため、抵抗体９
付近の構成を従来に比べて格段に簡略化することができ
る。The operation of this embodiment having the above construction is as follows. That is, in this embodiment, the resistance wires 9c and 9d are cast with the epoxy resin 9e to form the resistor 9. Therefore, the epoxy resin 9e improves the mechanical strength, and the conventional ceramic resistor 21 is used. It can have a sufficiently high mechanical strength as compared with. Therefore, since the resistor 9 itself and the resistor shield 7 can be supported only by the resistor 9, the insulating rod 22 which is necessary when the ceramic resistor 21 is used is unnecessary.
In addition, the size of the resistor 9 itself can be remarkably reduced as compared with the ceramic resistor 21.
The configuration in the vicinity can be remarkably simplified as compared with the conventional one.
【００２１】また、本実施例では、以上のように、抵抗
体シールド７と接続部１２との間の空間Ｂにおいて、補
強用の絶縁ロッド２２を省略でき、抵抗体９自身の寸法
についてもセラミックス抵抗体２１に比べて格段に小型
化できる上、３個の抵抗体９のみを使用しているため、
抵抗体９間の間隔Ａを広く空けることができ、その結
果、図１に示すように、固定側接触部３から導出される
接続導体１５を、空間Ｂにおける抵抗体９間の隙間の一
つに配置することが可能となっている。すなわち、本実
施例においては、図１に示すように、抵抗体９と接続導
体１５を固定側接触部３の軸方向における同じ位置に配
置できるため、従来のように軸方向における異なる位置
に並べて配置した場合に比べて、固定側接触部３の軸方
向寸法を格段に短縮できる。具体的には、図５と図１を
比較すれば明らかなように、本実施例における抵抗体シ
ールド７と接続導体１５との間の距離Ｌ1 （図１）は、
従来技術における同部の距離Ｌ2 に比べて格段に短縮さ
れている。Further, in this embodiment, as described above, the insulating rod 22 for reinforcement can be omitted in the space B between the resistor shield 7 and the connecting portion 12, and the size of the resistor 9 itself is also ceramics. Compared with the resistor 21, it can be made much smaller, and since only three resistors 9 are used,
The space A between the resistors 9 can be widened, and as a result, as shown in FIG. 1, the connection conductor 15 led out from the fixed side contact portion 3 is used as one of the spaces between the resistors 9 in the space B. It is possible to place it in. That is, in this embodiment, as shown in FIG. 1, since the resistor 9 and the connecting conductor 15 can be arranged at the same position in the axial direction of the fixed side contact portion 3, they are arranged at different positions in the axial direction as in the conventional case. The axial dimension of the fixed-side contact portion 3 can be remarkably shortened as compared with the case where they are arranged. Specifically, as is clear from comparison between FIG. 5 and FIG. 1, the distance L 1 (FIG. 1) between the resistor shield 7 and the connection conductor 15 in this embodiment is
This is much shorter than the distance L 2 of the same portion in the prior art.
【００２２】以上のように、本実施例においては、抵抗
線９ｃ，９ｄをエポキシ樹脂９ｅにて注型してなる抵抗
体９を使用することにより、従来のセラミックス抵抗体
２１に比べて十分に高い機械的強度を持たせることがで
きるため、絶縁ロッド２２が不要となる上、抵抗体９自
身を小型化でき、その結果、抵抗体９付近の構造を簡略
化することができる。そして、このような抵抗体９付近
の構造の簡略化によって、抵抗体９間の間隔Ａを広く空
けることができ、接続導体１５を空間Ｂに配置すること
が可能となるため、固定側接触部３の軸方向寸法を短縮
し、断路器全体の小型化に貢献することができる。さら
に、本実施例においては、抵抗体９を３個配置している
ため、支持構造上のバランスがよいという利点もある。As described above, in the present embodiment, by using the resistor 9 formed by casting the resistance wires 9c and 9d with the epoxy resin 9e, it is possible to sufficiently compare with the conventional ceramic resistor 21. Since high mechanical strength can be provided, the insulating rod 22 is not necessary, and the resistor 9 itself can be downsized, and as a result, the structure near the resistor 9 can be simplified. By simplifying the structure near the resistors 9 as described above, the interval A between the resistors 9 can be widened, and the connection conductor 15 can be arranged in the space B. The axial dimension of 3 can be shortened, which contributes to downsizing of the disconnecting switch as a whole. Further, in this embodiment, since three resistors 9 are arranged, there is also an advantage that the support structure is well balanced.
【００２３】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、抵抗体としては、絶縁被覆を施し
ていない抵抗線を巻いてエポキシ樹脂で注型してなる抵
抗体を使用することも可能である。また、使用する抵抗
体の数は、３個に限定されるものではなく、適宜選択可
能である。The present invention is not limited to the above-mentioned embodiment, and for example, as the resistor, a resistor obtained by winding a resistance wire not coated with an insulating coating and casting it with an epoxy resin is used. It is also possible. The number of resistors used is not limited to three and can be selected as appropriate.
【００２４】[0024]
【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
を構成することにより、抵抗体の機械的強度を従来のセ
ラミックス抵抗体よりも格段に向上できるため、抵抗体
付近の構造を簡略化すると共に、固定側接触部の軸方向
寸法を短縮し、断路器全体の小型・簡略化に貢献し得る
ような、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 constructing a resistor by casting a part or all of the resistance wire with epoxy resin, the mechanical strength of the resistor can be significantly improved compared to conventional ceramic resistors, so the structure near the resistor is simplified. In addition, it is possible to provide an excellent disconnector with resistance that can shorten the axial dimension of the fixed-side contact portion and contribute to downsizing and simplification of the overall disconnector.
【図１】本発明による抵抗付き断路器の一実施例を示す
構成図。FIG. 1 is a configuration diagram showing an embodiment of a disconnecting switch with resistance according to the present invention.
【図２】図１及び図５の抵抗付き断路器の方式を示す模
式図。FIG. 2 is a schematic diagram showing a system of the disconnector with resistance shown in FIGS. 1 and 5.
【図３】図１のＸ矢視図。FIG. 3 is a view on arrow X in FIG.
【図４】図１の抵抗体を示す構成図。FIG. 4 is a configuration diagram showing the resistor of FIG.
【図５】従来の抵抗付き断路器の一例を示す構成図。FIG. 5 is a configuration diagram showing an example of a conventional disconnector with resistance.
【図６】図５のセラミックス抵抗体を示す構成図6 is a configuration diagram showing the ceramic resistor of FIG.
【図７】図５のＸ矢視図。FIG. 7 is a view on arrow X in FIG.
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 ９ａ，９ｂ…電極 ９ｃ，９ｄ…抵抗線 ９ｅ…エポキシ樹脂 １０…操作装置 １１…開閉機構 １２…接続部 １３…絶縁筒 １４，１５…接続導体 １６…絶縁スペーサ ２１…セラミックス抵抗体 ２１ａ…抵抗体 ２１ｂ…絶縁ボルト ２２…絶縁ロッド Ａ…間隔 Ｂ…空間 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 9a, 9b ... Electrode 9c, 9d ... Resistance wire 9e ... Epoxy resin 10 ... Operating device 11 ... Opening / closing mechanism 12 ... Connecting portion 13 ... Insulating cylinders 14 and 15 ... Connecting conductor 16 ... Insulating spacer 21 ... Ceramic resistor 21a ... Resistor 21b ... Insulating bolt 22 ... Insulating rod A ... Insulation B …space
Claims (1)
側接触部と固定側接触部とが同軸線上に配置され、前記
可動側接触部と前記固定側接触部の間に可動接触子が配
置されると共に、前記固定側接触部の周囲に抵抗体シー
ルドが配置され、この抵抗体シールドが抵抗体を介して
前記固定側接触部に接続され、さらに、前記可動側接触
部と前記固定側接触部から接続導体がそれぞれ導出され
た構造を有しており、前記可動接触子を操作することに
よって電気回路の開閉を行う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
型して構成されたことを特徴とする抵抗付き断路器。1. A movable side contact portion and a fixed side contact portion are arranged coaxially in a closed container in which an insulating medium is sealed, and a movable contact is provided between the movable side contact portion and the fixed side contact portion. A resistor shield is disposed around the fixed-side contact portion, the resistor shield is connected to the fixed-side contact portion via a resistor, and the movable-side contact portion and the fixed-side portion are further connected. In a disconnector with resistance, which has a structure in which connection conductors are respectively led out from contact parts, and which opens and closes an electric circuit by operating the movable contactor, the resistance body partly or entirely of the resistance wire. A disconnecting switch with resistance, which is characterized by being casted with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13868892A JP3408269B2 (en) | 1992-05-29 | 1992-05-29 | Disconnector with resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13868892A JP3408269B2 (en) | 1992-05-29 | 1992-05-29 | Disconnector with resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05334943A true JPH05334943A (en) | 1993-12-17 |
| JP3408269B2 JP3408269B2 (en) | 2003-05-19 |
Family
ID=15227791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13868892A Expired - Fee Related JP3408269B2 (en) | 1992-05-29 | 1992-05-29 | Disconnector with resistance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3408269B2 (en) |
-
1992
- 1992-05-29 JP JP13868892A patent/JP3408269B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3408269B2 (en) | 2003-05-19 |
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