JPH0793082B2 - Vacuum interrupter formation method - Google Patents

Vacuum interrupter formation method

Info

Publication number
JPH0793082B2
JPH0793082B2 JP22199487A JP22199487A JPH0793082B2 JP H0793082 B2 JPH0793082 B2 JP H0793082B2 JP 22199487 A JP22199487 A JP 22199487A JP 22199487 A JP22199487 A JP 22199487A JP H0793082 B2 JPH0793082 B2 JP H0793082B2
Authority
JP
Japan
Prior art keywords
vacuum interrupter
arc
current
electrodes
formation
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
Application number
JP22199487A
Other languages
Japanese (ja)
Other versions
JPS6465735A (en
Inventor
泰司 野田
佳行 柏木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meidensha Corp
Original Assignee
Meidensha Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Meidensha Corp filed Critical Meidensha Corp
Priority to JP22199487A priority Critical patent/JPH0793082B2/en
Publication of JPS6465735A publication Critical patent/JPS6465735A/en
Publication of JPH0793082B2 publication Critical patent/JPH0793082B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Description

【発明の詳細な説明】 A.産業上の利用分野 本発明は真空インタラプタの化成方法に関し、電極の表
面を均一に化成し得るよう工夫したものである。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a method for forming a vacuum interrupter, which is devised so that the surface of an electrode can be formed uniformly.

B.発明の概要 本発明は、化成時の真空インタラプタのアークに対し縦
磁界を加えるとともに、化成時の真空インタラプタの電
極間にアークがチョップしない程度の直流電流を供給し
ておき、この状態で真空インタラプタを開極するととも
に、真空インタラプタの全開時に電流値がピークになる
ように、交流電流を供給して縦磁界効果が電流表面全体
に均一に広がり、アークも電流表面全体に均一に広がる
ようにし、電極表面の均一な化成を行ない得るようにし
たものである。B. Outline of the Invention The present invention applies a longitudinal magnetic field to the arc of the vacuum interrupter during formation, and supplies a direct current to the extent that the arc does not chop between the electrodes of the vacuum interrupter during formation, in this state. While opening the vacuum interrupter, an alternating current is supplied so that the vertical magnetic field effect spreads evenly over the current surface so that the current value reaches a peak when the vacuum interrupter is fully opened, and the arc also spreads uniformly over the current surface. In order to achieve uniform formation of the electrode surface.

C.従来の技術 真空遮断器は小形軽量で信頼性も高く、且つ保守も容易
な遮断器として汎用されている。真空遮断器の主要構成
部品は真空インタラプタであり、この真空インタラプタ
では10-5Torr程度の真空容器内に相対向する一対の電極
が導入されており、一方が他方に対して接離することに
より回路を開閉するようになっている。C. Conventional technology Vacuum circuit breakers are widely used as circuit breakers that are small, lightweight, highly reliable, and easy to maintain. The main component of the vacuum circuit breaker is a vacuum interrupter.In this vacuum interrupter, a pair of electrodes facing each other are introduced in a vacuum container of about 10 -5 Torr, and one of them is brought into contact with and separated from the other. It is designed to open and close circuits.

一方、この真空インタラプタは、高真空状態とすること
が必要であり、その製造工程においてはろう付け時、加
熱排気時において熱負荷を受ける。このため、電極表面
は熱負荷による荒れを起こし、初期において所定の絶縁
耐力及び絶縁回復特性が得られないことがある。そこ
で、この種の真空インタラプタでは、一般に、電極間に
アークを発生させ、このアークにより電極表面の荒れを
洗浄する、所謂電流化成が施されている。On the other hand, this vacuum interrupter needs to be in a high vacuum state, and in the manufacturing process thereof, it receives a heat load during brazing and during heating and exhausting. For this reason, the electrode surface may be roughened by a heat load, and the predetermined dielectric strength and dielectric recovery characteristics may not be obtained in the initial stage. Therefore, this type of vacuum interrupter is generally subjected to so-called current formation, in which an arc is generated between the electrodes and the arc cleans the surface of the electrodes.

従来技術に係る最も初期の化成方法は、閉極状態の化成
用の真空インタラプタの電極間に交流電圧を印加し、こ
の印加状態を継続したまま電極を開極することにより電
極間にアークを発生させるというものである。The earliest chemical conversion method according to the related art is to generate an arc between the electrodes by applying an AC voltage between the electrodes of the vacuum interrupter for chemical conversion in the closed state and opening the electrodes while maintaining this applied state. It is to let.

ところが、上記化成方法は、真空インタラプタの電極が
ディスク電極、スパイラル電極及びカップ電極等、縦磁
界型以外の場合、化成により発生するベーパーが真空容
器の内周面に付着してこれを汚損する。このため、化成
回数及び電流値が限定されるので、特に電極の径が大き
くなると充分な化成を行なうことができないという問題
がある。However, in the above-mentioned chemical conversion method, when the electrodes of the vacuum interrupter are other than the vertical magnetic field type such as the disk electrode, the spiral electrode and the cup electrode, the vapor generated by the chemical formation adheres to the inner peripheral surface of the vacuum container and stains it. Therefore, since the number of times of formation and the current value are limited, there is a problem that sufficient formation cannot be performed especially when the diameter of the electrode is large.

かかる問題点を解消し得る化成方法として化成用の真空
インタラプタの外部に配設したコイルにより縦磁界を加
えるという方法が提案されている。As a chemical conversion method capable of solving such a problem, a method has been proposed in which a longitudinal magnetic field is applied by a coil arranged outside a vacuum interrupter for chemical conversion.

第５図は縦磁界を加える化成方法を実現するための回
路、第６図はそのときの化成電流の波形及び第７図はそ
のときの化成用の真空インタラプタの開極時のストロー
クの波形を夫々示す。FIG. 5 shows a circuit for realizing a chemical conversion method for applying a longitudinal magnetic field, FIG. 6 shows a waveform of a chemical formation current at that time, and FIG. 7 shows a waveform of a stroke when a vacuum interrupter for chemical conversion at that time is opened. Show each.

第５図中、１は交流電源、２は補助真空遮断器、３は化
成用の真空インタラプタ、４は縦磁界発生用のコイル、
５はコイル４のための交流電源、Ｄはダイオード、Ｒは
抵抗、Ｌはリアクトル、Ｃはコンデンサである。In FIG. 5, 1 is an AC power source, 2 is an auxiliary vacuum circuit breaker, 3 is a vacuum interrupter for chemical formation, 4 is a coil for generating a longitudinal magnetic field,
5 is an AC power supply for the coil 4, D is a diode, R is a resistor, L is a reactor, and C is a capacitor.

かかる回路を用いて真空インタラプタ３の化成を行なう
場合は、コンデンサＣに直流電圧を充電し、補助真空遮
断器２及び化成用のインタラプタ３を閉極してＬ−Ｃ回
路により50Hzの振動電流を作り、その後真空インタラプ
タ３を開極することによりこの真空インタラプタ３の電
極間にアークを発生させている。このとき、コイル４に
よりアークに対しこのアークと同方向の縦磁界を作用さ
せている。When the vacuum interrupter 3 is formed by using such a circuit, the capacitor C is charged with a DC voltage, the auxiliary vacuum circuit breaker 2 and the formation interrupter 3 are closed, and an oscillating current of 50 Hz is generated by the LC circuit. After that, the vacuum interrupter 3 is opened to generate an arc between the electrodes of the vacuum interrupter 3. At this time, the coil 4 applies a longitudinal magnetic field in the same direction as the arc to the arc.

第７図中、Ａは補助真空遮断器２における真空インタラ
プタの閉極位置、Ｂは真空インタラプタ３の開極開始位
置、Ｃは真空インタラプタ３の全開位置である。In FIG. 7, A is the closed position of the vacuum interrupter in the auxiliary vacuum circuit breaker 2, B is the opening start position of the vacuum interrupter 3, and C is the fully open position of the vacuum interrupter 3.

同図と第６図とを併せて参照すれば明らかな通り、真空
インタラプタ３の全開位置Ａは化成電流の零点に略一致
している。これは、一般に、真空インタラプタ３は遮断
時の電流が零になった時点でアークを消すように考慮し
て設計してあり、これに合わせて操作器による開極スピ
ードも決定しているからである。As is clear by referring to FIG. 6 and FIG. 6 together, the fully open position A of the vacuum interrupter 3 substantially coincides with the zero point of the formation current. This is because the vacuum interrupter 3 is generally designed in consideration of extinguishing the arc when the current at the time of interruption becomes zero, and the opening speed by the operating device is also determined accordingly. is there.

D.発明が解決しようとする問題点 ところで、縦磁界を加えて電流化成をする場合、上記従
来技術においては、化成電流のピーク時における真空イ
ンタラプタ３の電極間のギャップが短かいため、即ち第
６図に示す化成電流のピーク時には第７図に示すように
電極は全開位置の略半分の位置迄しか開極していないた
め、アークが電極表面上で充分拡散しないという問題が
ある。これはコイルを真空インタラプタの外部に配設し
た場合でも、内部に配設した場合でも、即ち縦磁界型の
真空インタラプタの場合でも同様であるが、特に電極の
径が100mm以上と大きくなると電極表面の外周部分が化
成されずに残ってしまうという結果を招来する。D. Problems to be Solved by the Invention By the way, when current formation is performed by applying a longitudinal magnetic field, in the above-mentioned conventional technique, the gap between the electrodes of the vacuum interrupter 3 at the peak of the formation current is short, that is, At the peak of the formation current shown in FIG. 6, the electrode is opened up to about half of the fully opened position as shown in FIG. 7, and there is a problem that the arc does not sufficiently diffuse on the electrode surface. This is the same whether the coil is arranged outside or inside the vacuum interrupter, that is, in the case of a vertical magnetic field type vacuum interrupter, but especially when the diameter of the electrode becomes larger than 100 mm The result is that the outer peripheral portion of the is left unformed and remains.

対策として、１）化成電流の最大値を増やす、２）化成
回路を増やすという手段が考えられるが、前者は大きな
設備が必要になるばかりでなく電極の中心部が損傷する
という問題があり、後者は電極の中心部のみが化成され
るだけで効果がないということが判明した。As a countermeasure, 1) increasing the maximum value of the formation current, and 2) increasing the formation circuit are conceivable. However, the former not only requires large equipment, but also has the problem that the center part of the electrode is damaged. It was found that only the central part of the electrode was formed, and it had no effect.

本発明は、上記従来技術に鑑み、電極の径が大きくなっ
てもその表面を均一に化成し得る真空インタラプタの化
成方法を提供することを目的とする。The present invention has been made in view of the above prior art, and an object thereof is to provide a method for forming a vacuum interrupter capable of forming the surface of the electrode uniformly even if the diameter of the electrode is increased.

E.問題点を解決するための手段 上記目的を達成する本発明の構成は、閉極状態の真空イ
ンタラプタの電極間に交流電圧を印加し、この印加状態
を継続したまま電極を開極することにより電極間にアー
クを発生させ、このアークにより電極表面を荒れを洗浄
する真空インタラプタの化成方法において、アークに対
しこのアークと同一方向の磁界をコイルにより加え、更
に電極間でアークが持続される程度の直流電流を供給し
た状態で真空インタラプタを開極するとともに、真空イ
ンタラプタの全開時に電流値がピークになるように、そ
の後交流電流を供給することを特徴とする。E. Means for Solving the Problems The constitution of the present invention which achieves the above-mentioned object is to apply an AC voltage between the electrodes of the vacuum interrupter in the closed state, and to open the electrodes while maintaining this applied state. An arc is generated between the electrodes by the arc, and in the method of forming a vacuum interrupter that cleans the surface of the electrode for roughness, a magnetic field in the same direction as this arc is applied to the arc by a coil, and the arc is further maintained between the electrodes. It is characterized in that the vacuum interrupter is opened in the state where a direct current of a certain degree is supplied, and then an alternating current is supplied so that the current value reaches a peak when the vacuum interrupter is fully opened.

F.作用 上記構成の本発明によれば化成電流のピーク時には電極
間は従来に較べ大きく開極している。したがって、アー
クは電極表面の全域に亘って均一に拡散する。F. Action According to the present invention having the above-mentioned configuration, the electrodes are opened more widely than before when the formation current is at a peak. Therefore, the arc diffuses uniformly over the entire electrode surface.

G.実施例 以下本発明を実施例に基づき図面を用いて詳細に説明す
る。G. Examples Hereinafter, the present invention will be described in detail based on examples with reference to the drawings.

本実施例は、第４図と同一部分には同一番号を付した第
１図に示す回路を用いて真空インタラプタ３を電流化成
するものである。In this embodiment, the vacuum interrupter 3 is formed into a current by using the circuit shown in FIG. 1 in which the same parts as in FIG.

このときの諸条件は下記の通りである。The various conditions at this time are as follows.

１） 化成回路 電圧;4kV、 ２） 化成用の真空インタラプタ３ 定格電圧;84kV（r.m.s） 定格電流;31.5kA（r.m.s） ギャップ長;60（mm） 電極；直径110（mm）のスパイラル 定格開極スピード;3m/s 第１図に示すように、本回路は第５図に示す回路に対し
スイッチSW1，SW2及びスイッチSW1に流入する電流を制
限する抵抗R1を追加したものである。1) Chemical circuit voltage; 4kV, 2) Vacuum interrupter 3 for chemical formation Rated voltage; 84kV (rms) Rated current; 31.5kA (rms) Gap length; 60 (mm) Electrode; Spiral with diameter of 110 (mm) Rated opening speed; 3m / s Fig. 1 As shown in FIG. 5, this circuit is obtained by adding switches SW 1 and SW 2 and a resistor R 1 for limiting the current flowing into the switch SW 1 to the circuit shown in FIG.

本実施例では、第１図に示す回路を用いて、外部のコイ
ル４により縦磁界を加えた状態で真空インタラプタ３に
直流電流を流し、その後真空インタラプタ３を開極する
とともに、この真空インタラプタ３の全開時に化成電流
がピークになるように前記直流電流に交流電流を供給し
ている。In the present embodiment, using the circuit shown in FIG. 1, a direct current is applied to the vacuum interrupter 3 in a state in which a longitudinal magnetic field is applied by an external coil 4, and then the vacuum interrupter 3 is opened and the vacuum interrupter 3 is also opened. An alternating current is supplied to the direct current so that the formation current reaches its peak when fully opened.

かかる化成方法を更に詳言すると次の通りである。The chemical conversion method will be described in more detail below.

（１） スイッチSW1を閉成してコンデンサＣを充電す
る。このとき、スイッチSW2は開、補助真空インタラプ
タ２は開、化成用の真空インタラプタ３は閉となってい
る。(1) Close the switch SW 1 to charge the capacitor C. At this time, the switch SW 2 is open, the auxiliary vacuum interrupter 2 is open, and the chemical conversion vacuum interrupter 3 is closed.

（２） スイッチSW1を開放するとともにスイッチSW2を
閉成して真空インタラプタ３に直流電流を供給する。こ
のときの電流は、真空インタラプタ３の開極に伴ない発
生するアークがチョップ（截断）されない程度の値とす
る。このときのチョッピング電流は電極の材料及び電極
間の距離によって決まるが、Cu−Mo−Cr電極で電極間距
離が30mm程度のときは20〜30A程度で充分である。(2) The switch SW 1 is opened and the switch SW 2 is closed to supply a direct current to the vacuum interrupter 3. The current at this time is set to a value that does not chop (disconnect) the arc generated due to the opening of the vacuum interrupter 3. The chopping current at this time is determined by the material of the electrodes and the distance between the electrodes, but about 20 to 30 A is sufficient when the distance between the electrodes of the Cu-Mo-Cr electrode is about 30 mm.

（３） 真空インタラプタ３を開極する。(3) Open the vacuum interrupter 3.

（４） スイッチSW1を再度閉成するとともに補助真空
インタラプタ２を閉極し、若干遅らしてスイッチSW2を
開放する。このことにより回路には50Hzの交流電流が流
れるが、この交流電流のピーク時に真空インタラプタ３
が全開となるようにする。このようにするためには、前
記交流電流の周波数及び真空インタラプタ３の開極スピ
ードを考慮して補助真空インタラプタ２の閉極開始時期
及びスイッチSW2の開極開始時期を決定すれば良い。(4) Close the switch SW 1 again and close the auxiliary vacuum interrupter 2 and open the switch SW 2 with a slight delay. This causes a 50Hz alternating current to flow through the circuit, but at the peak of this alternating current, the vacuum interrupter 3
So that it is fully open. To do so, the closing start timing of the auxiliary vacuum interrupter 2 and the opening start timing of the switch SW 2 may be determined in consideration of the frequency of the alternating current and the opening speed of the vacuum interrupter 3.

第２図は本実施例に係る化成電流の波形を示す波形図、
第３図はこのときの真空インタラプタ３のストローク波
形を示す波形図である。両図に示すように、化成電流の
ピーク時には真空インタラプタ３が全開となっている。
真空インタラプタ３の開極開始位置Ｂから全開位置Ｃ迄
は通常８〜9msecであるため、補助真空インタラプタ２
は真空インタラプタ３の開極開始後略３〜4msec後に閉
極すれば良い。補助真空インタラプタ２の閉極位置を第
３図にＡで示す。FIG. 2 is a waveform diagram showing the waveform of the formation current according to this embodiment,
FIG. 3 is a waveform diagram showing a stroke waveform of the vacuum interrupter 3 at this time. As shown in both figures, the vacuum interrupter 3 is fully opened at the peak of the formation current.
Since it is usually 8 to 9 msec from the opening start position B of the vacuum interrupter 3 to the fully open position C, the auxiliary vacuum interrupter 2
May be closed approximately 3 to 4 msec after the opening of the vacuum interrupter 3 is started. The closed position of the auxiliary vacuum interrupter 2 is indicated by A in FIG.

かかる本実施例によれば、特にアークエネルギーが最も
大きい化成電流のピーク時に電極間のギャップを大きく
とることができるため、縦磁界が電極面全体に作用し、
アークを電極面全体に均一に拡散させる。According to this example, since the gap between the electrodes can be made large especially at the peak of the formation current where the arc energy is the largest, the longitudinal magnetic field acts on the entire electrode surface,
The arc is spread evenly over the entire electrode surface.

化成条件は前述と同じにし、且つ本発明及び従来におけ
る縦磁界を印加した化成後の真空インタラプタの耐電圧
特性を調べた結果を第４図に示す。FIG. 4 shows the results of examining the withstand voltage characteristics of the vacuum interrupter after the chemical conversion in the present invention and the conventional one in which the longitudinal magnetic field was applied under the same chemical conversion conditions as described above.

第４図は縦磁界を加えて電流化成を行なった場合のイン
パルス耐電圧特性を示すグラフである。同図中、○印は
本発明による場合、◎印は従来の場合の耐電圧値の平均
をプロットしてある。FIG. 4 is a graph showing impulse withstand voltage characteristics when current formation is performed by applying a vertical magnetic field. In the figure, the mark ◯ indicates the case of the present invention, and the mark ◎ indicates the average of the withstand voltage values in the conventional case.

第４図から明らかなように、本発明によれば初期より安
定した耐電圧特性が得られることが確認できた。As is clear from FIG. 4, it was confirmed that according to the present invention, stable withstand voltage characteristics were obtained from the initial stage.

なお、前記実施例において縦磁界は外部のコイルにより
発生させたが、これは内部のコイル、即ち縦磁界型の真
空インタラプタのコイルにより発生させても勿論良い。Although the vertical magnetic field is generated by the external coil in the above embodiment, it may be generated by the internal coil, that is, the coil of the vertical magnetic field type vacuum interrupter.

即ち、本実施例は、最初の一定期間直流電流によりアー
クを発生させることにより、定格開極スピードで真空イ
ンタラプタ３を開極し、且つ定格電流と同一の周波数の
交流電流で化成しても真空インタラプタ３の全開時に前
記交流電流のピークがくるようにしたものである。That is, in the present embodiment, the vacuum interrupter 3 is opened at the rated opening speed by generating an arc by the direct current for the first fixed period, and the vacuum is formed even when the alternating current having the same frequency as the rated current is formed. The peak of the alternating current comes so that the interrupter 3 is fully opened.

H.発明の効果 以上実施例とともに具体的に説明したように、本発明に
よればアークがチョップしない程度の直流電流を供給し
た状態で化成用の真空インタラプタの開極を開始し、そ
の後交流電流を供給してこの交流電流のピーク時に前記
真空インタラプタが全開となるようにしたので、アーク
エネルギが最も大きい化成電流のピーク時には電極間の
ギャップが大きくなっており、したがって縦磁界が電極
面全体に均一に作用する。この結果、電極はその径が大
きくなっても全体的に均一に化成される。H. Effects of the Invention As specifically described with the above embodiments, according to the present invention, the opening of the vacuum interrupter for chemical conversion is started in the state where the direct current is supplied to the extent that the arc does not chop, and then the alternating current is applied. Since the vacuum interrupter is fully opened at the peak of this alternating current, the gap between the electrodes is large at the peak of the formation current where the arc energy is the largest, and therefore the longitudinal magnetic field is applied to the entire electrode surface. Works evenly. As a result, the electrode is uniformly formed even if its diameter is increased.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の実施例に用いる化成回路を示す回路
図、第２図はその化成電流の波形を示す波形図、第３図
は本実施例に係る真空インタラプタの開極時のそのスト
ローク波形を示す波形図、第４図は化成時に縦磁界を加
えた本発明と従来における化成後の真空インタラプタの
インパルス耐電圧特性を示すグラフ、第５図は従来技術
に係る化成用の回路を示す回路図、第６図はその化成電
流の波形を示す波形図、第７図は従来技術に係るストロ
ーク波形を示す波形図である。 図面中、 1,5は交流電源、３は真空インタラプタ、４はコイルで
ある。FIG. 1 is a circuit diagram showing a chemical conversion circuit used in an embodiment of the present invention, FIG. 2 is a waveform diagram showing a waveform of a chemical formation current thereof, and FIG. 3 is a stroke thereof when a vacuum interrupter according to the present embodiment is opened. FIG. 4 is a waveform diagram showing waveforms, FIG. 4 is a graph showing impulse withstand voltage characteristics of a vacuum interrupter after chemical formation in the present invention in which a longitudinal magnetic field is applied during chemical formation, and FIG. 5 is a chemical conversion circuit according to the prior art. FIG. 6 is a circuit diagram, FIG. 6 is a waveform diagram showing a waveform of the formation current, and FIG. 7 is a waveform diagram showing a stroke waveform according to the prior art. In the drawing, 1 and 5 are AC power supplies, 3 is a vacuum interrupter, and 4 is a coil.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】閉極状態の真空インタラプタの電極間に交
流電圧を印加し、この印加状態を継続したまま電極を開
極することにより電極間にアークを発生させ、このアー
クにより電極表面を洗浄する真空インタラプタの化成方
法において、アークに対しこのアークと同一方向の磁界
をコイルにより加え、更に電極間でアークが持続される
程度の直流電流を供給した状態で真空インタラプタを開
極するとともに、真空インタラプタの全開時に電流値が
ピークになるように、その後交流電流を供給することを
特徴とする真空インタラプタの化成方法。1. An AC voltage is applied between electrodes of a vacuum interrupter in a closed state, and the electrodes are opened while the application state is maintained to generate an arc between the electrodes, and the arc cleans the electrode surface. In the method of forming a vacuum interrupter, a magnetic field in the same direction as this arc is applied to the arc by a coil, and the vacuum interrupter is opened while a DC current is supplied between the electrodes to such an extent that the arc is sustained. A method of forming a vacuum interrupter, which comprises supplying an alternating current so that the current value reaches a peak when the interrupter is fully opened.
JP22199487A 1987-09-07 1987-09-07 Vacuum interrupter formation method Expired - Fee Related JPH0793082B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22199487A JPH0793082B2 (en) 1987-09-07 1987-09-07 Vacuum interrupter formation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22199487A JPH0793082B2 (en) 1987-09-07 1987-09-07 Vacuum interrupter formation method

Publications (2)

Publication Number Publication Date
JPS6465735A JPS6465735A (en) 1989-03-13
JPH0793082B2 true JPH0793082B2 (en) 1995-10-09

Family

ID=16775421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22199487A Expired - Fee Related JPH0793082B2 (en) 1987-09-07 1987-09-07 Vacuum interrupter formation method

Country Status (1)

Country Link
JP (1) JPH0793082B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9914977D0 (en) * 1999-06-25 1999-08-25 Glaxo Group Ltd Chemical compounds
US10566158B2 (en) * 2017-12-13 2020-02-18 Finley Lee Ledbetter Method for reconditioning of vacuum interrupters

Also Published As

Publication number Publication date
JPS6465735A (en) 1989-03-13

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