JP3013770B2 - Method for controlling arc generator in switch and switch - Google Patents
Method for controlling arc generator in switch and switchInfo
- Publication number
- JP3013770B2 JP3013770B2 JP7332801A JP33280195A JP3013770B2 JP 3013770 B2 JP3013770 B2 JP 3013770B2 JP 7332801 A JP7332801 A JP 7332801A JP 33280195 A JP33280195 A JP 33280195A JP 3013770 B2 JP3013770 B2 JP 3013770B2
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- JP
- Japan
- Prior art keywords
- switch
- arc
- load
- conductor
- electrodes
- 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 - Lifetime
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- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は開閉器内におけるア
ーク発生部を制御する方法及び開閉器に係り、更に詳し
くは開閉器の内部短絡事故の際に発生するアークエネル
ギーを最小限に抑えることによって開閉器の内部機構や
ケースの破損を防止し、小型で軽量の開閉器を提供でき
るようにしたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a switch for controlling an arc generator in a switch, and more particularly, to minimizing the arc energy generated in the event of an internal short circuit in the switch. The present invention relates to a switch that prevents damage to an internal mechanism and a case of a switch and provides a small and lightweight switch.
【０００２】[0002]
【従来技術】配電系統において、開閉器の内部短絡事故
が発生した場合は変電所の遮断器が一旦遮断し、所定時
間後再送電される。図２は従来の一般的な開閉器の構造
とアークの発生状態を示したものである。図に於て、１
は開閉器ケース、２は電源側充電部導体、３は負荷側充
電部導体、６は負荷側ブッシング、６ａは電源側ブッシ
ング、７は絶縁板、８は接触子、９はアークである。2. Description of the Related Art In a distribution system, when an internal short circuit accident occurs in a switch, a circuit breaker in a substation is temporarily shut off, and power is transmitted again after a predetermined time. FIG. 2 shows the structure of a conventional general switch and the state of arc generation. In the figure, 1
Is a switch case, 2 is a power supply side charging part conductor, 3 is a load side charging part conductor, 6 is a load side bushing, 6a is a power supply side bushing, 7 is an insulating plate, 8 is a contact, and 9 is an arc.
【０００３】図２に示した開閉器では、前記したような
内部短絡事故時におけるアーク９の発生で内部機構や開
閉器ケース１の破損を軽減するため、開閉器ケース１の
板厚を厚くする等の機械的強度を図ったり、各相間の絶
縁距離を長くしたり、また各相間に絶縁板７，７を設け
る等の絶縁強度を増す対策が図られている。そのため開
閉器の重量増加や開閉器ケース１の外形寸法Ｌ2 を大き
くする等大型化を余儀なくされていた。In the switch shown in FIG. 2, the thickness of the switch case 1 is increased in order to reduce damage to the internal mechanism and the switch case 1 due to the occurrence of the arc 9 at the time of the above-described internal short circuit accident. For example, measures are taken to increase the insulation strength, such as increasing the mechanical strength, increasing the insulation distance between the phases, and providing insulating plates 7, 7 between the phases. Therefore it had been forced to equal size by increasing the outside dimension L 2 of the weight gain and switch case 1 of the switch.
【０００４】また、上記のような対策を施した場合で
も、相間のアーク９は大電流になる程負荷側ブッシング
６に向かって伸びるために、負荷側ブッシング６が損傷
することは避けられない。更に、負荷側ブッシング６や
接触子８は長く伸びたアークの熱エネルギーによって損
傷を受けているために、再送電の場合に更に内部短絡事
故が起こり２次的損傷を受ける等の問題があった。[0004] Even when the above measures are taken, the arc 9 between the phases extends toward the load-side bushing 6 as the current increases, so that the load-side bushing 6 is inevitably damaged. Further, since the load-side bushing 6 and the contact 8 are damaged by the thermal energy of the elongated arc, there is a problem that, in the case of power transmission, an internal short-circuit accident occurs and secondary damage is caused. .
【０００５】[0005]
【発明が解決しようとする課題】これらの問題に対し
て、開閉器内部の各相間のケース上にアークホーンを取
り付けることによって内部短絡事故時における内部機構
及びケースの破損を防止することが提案されている。To solve these problems, it has been proposed to prevent damage to the internal mechanism and the case in the event of an internal short circuit by mounting an arc horn on the case between the phases inside the switch. ing.
【０００６】図３はアークホーンを備えた開閉器の構造
とアークの発生状態を示した概略説明図である。開閉器
が投入状態で内部短絡事故が発生すると、図に示したよ
うに負荷側ブッシング６の間にアークホーン１０を設け
たことにより、一体となっている各相の接触子８及び負
荷側充電部導体３とアークホーン１０との間でアーク９
が生じ、アーク９はブッシング６に向かっては伸びな
い。このためブッシング６は保護される。FIG. 3 is a schematic explanatory view showing the structure of a switch provided with an arc horn and the state of arc generation. When an internal short circuit accident occurs when the switch is turned on, an arc horn 10 is provided between the load-side bushings 6 as shown in the figure, so that the contact 8 of each phase and the load-side charging are integrated. Arc 9 between the outer conductor 3 and the arc horn 10
And the arc 9 does not extend toward the bushing 6. Therefore, the bushing 6 is protected.
【０００７】しかし、アーク９の熱エネルギーによって
接触子８と負荷側充電部導体３の消耗が激しくなり溶断
にまで至ると、接触子８及び負荷側充電部導体３とアー
クホーン１０の間の距離が離れ、変電所からの再送電の
際には更に内部短絡事故を起こしアーク長が長くなって
アークエネルギーも増大する。また、アークが各相の接
触子８及び負荷側充電部導体３とアークホーン１０との
間の４箇所で発生する為にアーク９の熱エネルギーも多
く、この場合も開閉器内部の接触子３等の損傷は避けら
れない。更には、アークホーン１０を設置する場所が必
要であり、その分開閉器ケース１の外形寸法Ｌ3 を大き
くする等大型化を余儀なくされていた。However, when the thermal energy of the arc 9 causes the contact 8 and the load-side charged portion conductor 3 to be intensely consumed and is cut off, the distance between the contact 8 and the load-side charged portion conductor 3 and the arc horn 10 is increased. In the case of retransmission from the substation, an internal short circuit accident occurs, the arc length increases, and the arc energy also increases. Further, since arcs are generated at the contact 8 of each phase and at four places between the load-side charged portion conductor 3 and the arc horn 10, the heat energy of the arc 9 is also large. Damage is inevitable. Furthermore, it is necessary where to place the arc horn 10, has been forced to equal size by increasing the outside dimension L 3 of correspondingly switch case 1.
【０００８】そこで本発明の目的は、開閉器の内部短絡
事故の際に発生するアークエネルギーを最小限に抑える
ことによって、開閉器の内部機構及びケースの破損を防
止した、開閉器内におけるアーク発生部を制御する方法
及び開閉器を提供することにある。また、本発明の他の
目的は外形寸法を従来の開閉器ケースに比べて小さくで
き、小型で軽量な開閉器を提供することにある。Accordingly, an object of the present invention is to minimize arc energy generated in the event of an internal short circuit accident in a switch, thereby preventing damage to the internal mechanism and the case of the switch. It is an object of the present invention to provide a method for controlling a part and a switch. Another object of the present invention is to provide a small and lightweight switch whose external dimensions can be made smaller than that of a conventional switch case.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決し目的を
達成するために講じた本発明の手段は次のとおりであ
る。第１の発明にあっては、開閉器ケース内に三相充電
部を一括収納してなる開閉器内におけるアーク発生部を
制御する方法であって、各負荷側充電部導体に、先端部
が隣り合う負荷側充電部導体に向かう電極を設け、当該
電極間でアークが発生するようにしたことを特徴とす
る、開閉器内におけるアーク発生部を制御する方法であ
る。Means of the present invention taken to solve the above problems and achieve the object are as follows. According to the first invention, there is provided a method for controlling an arc generating portion in a switch including a three-phase charging portion collectively housed in a switch case, wherein each load-side charging portion conductor has a tip portion. A method for controlling an arc generating section in a switch, characterized in that electrodes are provided toward adjacent load-side charging section conductors and an arc is generated between the electrodes.
【００１０】第２の発明にあっては、開閉器ケース内に
三相充電部を一括収納してなる開閉器に於て、各負荷側
充電部導体に、先端部が隣り合う負荷側充電部導体に向
かう電極が設けられており、当該電極の先端部は互いに
向き合って配置されていることを特徴とする、開閉器で
ある。According to a second aspect of the present invention, in a switch in which a three-phase charging portion is collectively housed in a switch case, a load-side charging portion having a tip end adjacent to each load-side charging portion conductor. An electrode is provided toward a conductor, and the tip of the electrode is disposed so as to face each other.
【００１１】[0011]
【作 用】負荷側充電部導体に、先端部が隣り合う負荷
側充電部導体に向かう電極を設け、当該電極間でアーク
が発生するようにしている。このためアークの発生箇所
は２箇所となる。また電極先端は互いに向き合って配置
されているのでアークの長さが短くなり、上記アークの
発生箇所の数と相まって内部短絡事故の際のアークエネ
ルギーを最小限に抑えることができる。この為開閉器の
ケースの機械的強度あるいは各相間の絶縁強度を増加さ
せないでもアークエネルギーによる開閉器の内部機構及
びケースの損傷を防止できる。[Work] An electrode is provided on the load-side charging portion conductor toward the load-side charging portion conductor whose tip end is adjacent to the load-side charging portion conductor, and an arc is generated between the electrodes. For this reason, there are two arcing locations. Further, since the tip ends of the electrodes are arranged to face each other, the length of the arc is shortened, and the arc energy at the time of an internal short-circuit accident can be minimized in combination with the number of the locations where the arc is generated. Therefore, damage to the internal mechanism of the switch and the case due to arc energy can be prevented without increasing the mechanical strength of the switch case or the insulation strength between the phases.
【００１２】また、各相間の絶縁距離を長くしなくても
すみ、アークホーンを設置する必要もない。従ってその
分開閉器ケースの外形寸法を小さく設定でき、従来の開
閉器に比べて小型で軽量な開閉器が提供できる。Further, it is not necessary to increase the insulation distance between the phases, and it is not necessary to provide an arc horn. Accordingly, the outer dimensions of the switch case can be set smaller by that amount, and a switch that is smaller and lighter than conventional switches can be provided.
【００１３】[0013]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて説明する。図１は本発明に係る開閉器の実施の形態
の内部構造とアークの発生状態を示した説明図である。
負荷側充電部導体３，３，３には、先端部４１，５１，
４１が隣り合う負荷側充電部導体に向かう電極４，５，
４が設けられている。電極４，５，４の先端部４１，５
１，４１は円弧状に形成されており、互いに向き合った
状態で配置されている。電極の素材としては銅やタング
ステン合金が使用されているが、その他銅，真鍮，鉄，
ステンレス等の導電材を使用することもできる。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing an internal structure and an arc generation state of a switch according to an embodiment of the present invention.
The load-side charging portion conductors 3, 3, 3 have tip portions 41, 51,
Electrodes 41, 5 toward the adjacent load-side charging portion conductor 41
4 are provided. Tip portions 41, 5 of electrodes 4, 5, 4
Reference numerals 1 and 41 are formed in an arc shape, and are arranged so as to face each other. Copper and tungsten alloys are used as the material of the electrode, but copper, brass, iron,
A conductive material such as stainless steel can also be used.
【００１４】電極４，５，４には、間隔調整の為、その
軸線方向と平行な長穴４０，５０，４０が形成されてい
る。長穴４０，４０は電極４，４の基部側、長穴５０は
電極５の中央部に設けられている。そうして電極４，
５，４は長穴４０，５０，４０を貫通したネジ１１によ
って負荷側充電部導体３，３，３に固着されている。な
お、予め相電極４，５，４間のギャップを、内部短絡時
に発生する各相間のアーク長９，９，９が短くなるよう
に最適距離で設定されておれば、長穴４０，５０，４０
の代わりに丸穴を使用してもよい。The electrodes 4, 5, and 4 are formed with elongated holes 40, 50, and 40, respectively, which are parallel to the axial direction for adjusting the interval. The long holes 40 are provided on the base side of the electrodes 4 and 4, and the long hole 50 is provided on the center of the electrode 5. Then electrode 4,
5 and 4 are fixed to the load-side charging portion conductors 3, 3, and 3 by screws 11 passing through the elongated holes 40, 50, and 40, respectively. If the gap between the phase electrodes 4, 5, 4 is previously set at an optimum distance so that the arc lengths 9, 9, 9 between the phases generated at the time of internal short-circuiting are shortened, the long holes 40, 50, 4 40
Alternatively, a round hole may be used.
【００１５】[0015]
【作用】各相電極４，５，４間のギャップを、内部短絡
時に発生する各相間のアーク長９，９，９が短くなるよ
うに最適距離で設定する。この各相電極間のギャップが
近過ぎると、通常開閉器に必要とされる絶縁距離が保て
ない。また離れ過ぎると内部短絡時のアーク長が長くな
る為アークエネルギーが大きくなる。従って、耐絶縁性
能を満足する範囲で最小寸法になるよう設定する。The gap between the phase electrodes 4, 5, 4 is set at an optimum distance so that the arc length 9, 9, 9 between the phases generated at the time of an internal short circuit becomes short. If the gap between the phase electrodes is too small, the insulation distance normally required for a switch cannot be maintained. On the other hand, if the distance is too large, the arc length at the time of the internal short circuit becomes long, so that the arc energy becomes large. Therefore, the minimum size is set within a range that satisfies the insulation resistance.
【００１６】負荷側充電部導体３，３，３に、先端部４
１，５１，４１が隣り合う負荷側充電部導体に向かう電
極４，５，４を設け、当該電極間でアークが発生するよ
うにしている。このためアークの発生箇所は２箇所とな
る。また電極の先端部４１，５１，４１は互いに向き合
って配置されているのでアーク９，９，９の長さが短く
なり、上記アークの発生箇所の数と相まって内部短絡事
故の際のアークエネルギーを最小限に抑えることができ
る。この為開閉器のケースの機械的強度あるいは各相間
の絶縁強度を増加させないでもアークエネルギーによる
開閉器の内部機構及びケースの損傷を防止できる。The load-side charging portion conductors 3, 3, and 3 have a tip 4
The electrodes 1, 5, and 4 are provided with the electrodes 4, 5, and 4 facing the adjacent load-side charging portion conductors so that an arc is generated between the electrodes. For this reason, there are two arcing locations. Further, since the tip portions 41, 51, 41 of the electrodes are arranged to face each other, the length of the arcs 9, 9, 9 is shortened, and the arc energy at the time of an internal short circuit accident is reduced in combination with the number of the above-mentioned arc occurrence points. Can be minimized. Therefore, damage to the internal mechanism of the switch and the case due to arc energy can be prevented without increasing the mechanical strength of the switch case or the insulation strength between the phases.
【００１７】また、各相間の絶縁距離を長くしなくても
すみ、アークホーンを設置する必要もない。従ってその
分開閉器ケース１の外形寸法Ｌ1 を小さく設定できる。
つまりＬ1 ＜Ｌ2,Ｌ 3とすることができ、従来の開閉器
に比べて小型化を図ることができる。Further, it is not necessary to increase the insulation distance between the phases, and it is not necessary to provide an arc horn. Thus smaller the external dimensions L 1 of correspondingly switch case 1.
That is, L 1 <L 2 and L 3 can be satisfied, and the size can be reduced as compared with the conventional switch.
【００１８】なお、本発明は図示の実施例に限定される
ものではなく、特許請求の範囲の記載内において数々の
変形が可能である。また、各図を通して同一又は同等箇
所には同一符号を付して示している。It should be noted that the present invention is not limited to the illustrated embodiment, and various modifications are possible within the scope of the claims. The same or equivalent parts are denoted by the same reference symbols throughout the drawings.
【００１９】[0019]
【発明の効果】本発明によれば、負荷側充電部導体に、
先端部が隣り合う負荷側充電部導体に向かう電極を設
け、当該電極間でアークが発生するようにしている。こ
のためアークの発生箇所は２箇所となる。また電極先端
は互いに向き合って配置されているのでアークの長さが
短くなり、上記アークの発生箇所の数と相まって内部短
絡事故の際のアークエネルギーを最小限に抑えることが
できる。この為開閉器のケースの機械的強度あるいは各
相間の絶縁強度を増加させないでもアークエネルギーに
よる開閉器の内部機構及びケースの損傷を防止できる。According to the present invention, the load-side charged part conductor has:
An electrode having a leading end directed to an adjacent load-side charging portion conductor is provided so that an arc is generated between the electrodes. For this reason, there are two arcing locations. Further, since the tip ends of the electrodes are arranged to face each other, the length of the arc is shortened, and the arc energy at the time of an internal short-circuit accident can be minimized in combination with the number of the locations where the arc is generated. Therefore, damage to the internal mechanism of the switch and the case due to arc energy can be prevented without increasing the mechanical strength of the switch case or the insulation strength between the phases.
【００２０】また、各相間の絶縁距離を長くしなくても
すみ、アークホーンを設置する必要もない。従ってその
分開閉器ケースの外形寸法Ｌ1 を小さく設定でき、従来
の開閉器に比べて小型化で軽量な開閉器が提供できる。Further, it is not necessary to increase the insulation distance between the phases, and it is not necessary to provide an arc horn. Thus can be set smaller outside dimension L 1 of the correspondingly switch case, lightweight switch can be provided with less volume than the conventional switch.
【図１】本発明に係る開閉器の実施の形態の内部構造と
アークの発生状態を示した説明図である。FIG. 1 is an explanatory diagram showing an internal structure and an arc generation state of an embodiment of a switch according to the present invention.
【図２】従来の一般的な開閉器の構造とアークの発生状
態を示した概略説明図である。FIG. 2 is a schematic explanatory view showing the structure of a conventional general switch and the state of arc generation.
【図３】アークホーンを備えた開閉器の構造とアークの
発生状態を示した概略説明図である。FIG. 3 is a schematic explanatory view showing a structure of a switch provided with an arc horn and an arc generation state.
１ 開閉器ケース ２ 電源側充電部導体 ３ 負荷側充電部導体 ４ 電極 ５ 電極 ６ 負荷側ブッシング ６ａ 電源側ブッシング ７ 絶縁板 ８ 接触子 ９ アーク １０ アークホーン Ｌ1 本発明にかかる開閉器ケースの外形寸法 Ｌ2 従来の開閉器ケースの外形寸法 Ｌ3 アークホーンを備えた従来の開閉器ケースの外形
寸法DESCRIPTION OF SYMBOLS 1 Switch case 2 Power supply side charging part conductor 3 Load side charging part conductor 4 Electrode 5 Electrode 6 Load side bushing 6a Power supply side bushing 7 Insulating plate 8 Contact 9 Arc 10 Arc horn L 1 Outline of switch case concerning this invention dimensions of a conventional switch case having the outer dimensions L 3 arcing horn dimension L 2 conventional switch case
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平４−112435（ＪＰ，Ｕ) 実開 昭54−137766（ＪＰ，Ｕ) 実開 昭54−66150（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 33/20 H01H 9/46 H01H 31/32 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 4-112435 (JP, U) JP-A 54-137766 (JP, U) JP-A 54-66150 (JP, U) (58) Survey Field (Int.Cl. 7 , DB name) H01H 33/20 H01H 9/46 H01H 31/32
Claims (2)
してなる開閉器内におけるアーク発生部を制御する方法
であって、 各負荷側充電部導体に、先端部が隣り合う負荷側充電部
導体に向かう電極を設け、当該電極間でアークが発生す
るようにしたことを特徴とする、 開閉器内におけるアーク発生部を制御する方法。1. A method for controlling an arc generating portion in a switch including a three-phase charging portion collectively housed in a switch case, wherein each load-side charging portion conductor has a load-side end adjacent to the load-side charging portion conductor. A method for controlling an arc generating section in a switch, wherein an electrode is provided toward a charged portion conductor, and an arc is generated between the electrodes.
してなる開閉器に於て、 各負荷側充電部導体(3,3,3) に、先端部(41,51,41)が隣
り合う負荷側充電部導体に向かう電極(4,5,4) が設けら
れており、当該電極(4,5,4) の先端部(41,51,41)は互い
に向き合って配置されていることを特徴とする、 開閉器。2. A switch in which a three-phase charging section is collectively housed in a switch case, wherein each load-side charging section conductor (3, 3, 3) has a tip section (41, 51, 41). There is provided an electrode (4,5,4) toward the adjacent load-side charging portion conductor, and the tips (41,51,41) of the electrodes (4,5,4) are arranged facing each other. A switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7332801A JP3013770B2 (en) | 1995-11-27 | 1995-11-27 | Method for controlling arc generator in switch and switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7332801A JP3013770B2 (en) | 1995-11-27 | 1995-11-27 | Method for controlling arc generator in switch and switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09147692A JPH09147692A (en) | 1997-06-06 |
| JP3013770B2 true JP3013770B2 (en) | 2000-02-28 |
Family
ID=18258962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7332801A Expired - Lifetime JP3013770B2 (en) | 1995-11-27 | 1995-11-27 | Method for controlling arc generator in switch and switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3013770B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4778812B2 (en) * | 2006-03-06 | 2011-09-21 | 日本高圧電気株式会社 | Insulation strength control structure of switch |
-
1995
- 1995-11-27 JP JP7332801A patent/JP3013770B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09147692A (en) | 1997-06-06 |
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