JPS5893128A - Vacuum degree monitor for vacuum breaker - Google Patents
Vacuum degree monitor for vacuum breakerInfo
- Publication number
- JPS5893128A JPS5893128A JP56173887A JP17388781A JPS5893128A JP S5893128 A JPS5893128 A JP S5893128A JP 56173887 A JP56173887 A JP 56173887A JP 17388781 A JP17388781 A JP 17388781A JP S5893128 A JPS5893128 A JP S5893128A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- antenna
- interrupter
- degree
- signal
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/10—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
- G01L21/12—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured measuring changes in electric resistance of measuring members, e.g. of filaments; Vacuum gauges of the Pirani type
-
- 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
-
- 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
- H01H33/668—Means for obtaining or monitoring the vacuum
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Gas-Insulated Switchgears (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
重置明は真空しゃ断器の真空ＩＪＬＶＬ視装置に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum IJLVL viewing device for a vacuum breaker.
一般κ真空し中断器はその真空度が１０ テｏｒｒ以
下の圧力で正常なし中断能力を有しているが、この真空
度はし中断器内部からの放出ガス中＊＊およびろう付け
などの接合部からのスローリークなどによって劣化し、
し中断能力が低下する。このため、真空し中断時におい
てはその真空度を監視する仁とが性能保証上から必要欠
くべからざるものとなって−る。A general κ vacuum interrupter has the ability to interrupt normally at a pressure of 10 Terr or less; deterioration due to slow leakage from the
and the ability to interrupt is reduced. For this reason, it is indispensable to monitor the degree of vacuum when the vacuum is interrupted in order to guarantee performance.
そこで従来にかいては、真空し中断器内部に放電電ｉｔ
設けるとと４に別電源によｐ高電圧を印加し、ζの除の
放電状態が真φ度によヤ変化することによ９真空度のチ
ェノ−りを行うなどしてｖｈたが、このような方法では
真空し中断器の構造が複雑になるとともに高電圧の別電
源を用意しなければならないため高価になった。又、真
空度のチェックに際して祉真空し中断器を回路から切離
す必要が６９、非常に面倒であった。Therefore, in the past, the interrupter was vacuumed and a discharge voltage was placed inside it.
By applying a high voltage P from a separate power supply to 4 and changing the discharge state of ζ depending on the degree of true φ, we performed a Cheno-wari of 9 degrees of vacuum. In this method, the structure of the vacuum interrupter becomes complicated, and a separate high-voltage power source must be provided, making it expensive. Furthermore, when checking the degree of vacuum, it was necessary to perform a vacuum check and disconnect the interrupter from the circuit69, which was very troublesome.
本発明は上記の欠点を除去して、放電電極や為電圧の一
別電源を必賛とせず、かつ真空しゃ断器を回路に接続し
たままでその真空度のチェックを行うことができ、真空
度のチェックｔ−簡単かつ安価に行うことができる真空
しゃ断器の真空度監視装置を提供すること金目的とする
。The present invention eliminates the above-mentioned drawbacks, does not require a separate power source for discharge electrodes and voltages, and can check the degree of vacuum with the vacuum breaker connected to the circuit. It is an object of the present invention to provide a vacuum degree monitoring device for a vacuum breaker that can easily and inexpensively check the following conditions.
以下本発明の実施例を図面とともに説明する。Embodiments of the present invention will be described below with reference to the drawings.
第１図において、ｌ紘真空し中断器で、真空し中断器ｌ
は絶縁筒２０両端に金属製の端板３，４を取付けて真空
容器を形成し、−板３に社固定り一メ
ドＳ’ｆｆ挿着するとともに端板４にはベローズ６を介
して可動リード７を移動可能に挿着し、固定リード５お
よび可動リード７の先端には夫々固定電極８および可動
電極９ｔ−取付ける。又、絶縁筒２の中間にはし中断時
電極８，９間に発生する金属蒸気が絶縁筒２に付着する
のを防止するためのシールド１０を取付ける。１１ ｊ
１２は補助シールド、１３゜１４Ｆｉ外部級続導体、１
５は集電部である。１６は真空し中断器ｌの近傍に配設
されるべきパルス信号受信部材、たとえばアンテナで、
このアンテナ１６Ｆｉ接続ｌｉ １７ Ｋより検出器１
８に緑綬されている。検出器１８拡増幅部１９、判定部
加、電源部４および表示部ｎから構成されている。In Figure 1, the vacuum and interrupter is
A vacuum container is formed by attaching metal end plates 3 and 4 to both ends of the insulating cylinder 20, and a metal S'ff is fixed to the plate 3 and a metal S'ff is inserted, and the end plate 4 is movable via a bellows 6. A lead 7 is movably inserted, and a fixed electrode 8 and a movable electrode 9t are attached to the tips of the fixed lead 5 and the movable lead 7, respectively. Further, a shield 10 is installed in the middle of the insulating cylinder 2 to prevent metal vapor generated between the electrodes 8 and 9 from adhering to the insulating cylinder 2 when the cutting is interrupted. 11 j
12 is auxiliary shield, 13゜14Fi external class connection conductor, 1
5 is a current collecting section. 16 is a pulse signal receiving member, such as an antenna, to be disposed near the vacuum interrupter l;
Detector 1 from this antenna 16Fi connection li 17K
8 is marked with a green ribbon. It is composed of a detector 18, an amplifying section 19, a determining section, a power supply section 4, and a display section n.
第２図線検出器１８の詳細を示すもので、慈はアンテナ
１６で検出しへ検出信号を増幅するバッファアンプ、腕
はパックアアンプ田の出力信号を増幅するアンプである
。３はアンプあの増幅出力信号を所定の基準電圧と比較
する第１の比較機、謳は第１０比軟器渦の出力信号を積
分する積分器、４は積分器易の出力信号をさらに所定の
基準電圧と比較する第２の比較器である。The second diagram shows the details of the detector 18, in which a buffer amplifier is used to amplify the detected signal detected by the antenna 16, and an amplifier is used to amplify the output signal from the pack amplifier. 3 is a first comparator that compares the amplified output signal of the amplifier with a predetermined reference voltage; 1 is an integrator that integrates the output signal of the 10th ratio softener; 4 is an integrator that integrates the output signal of the integrator. A second comparator for comparison with a reference voltage.
上記構成において、真空し中断器１は図示しな。In the above configuration, the vacuum interrupter 1 is not shown.
ｉ操作装置により可動リード７ｔ−動かし、電極８゜−
を級離して投入、し中断を行うが真空しゃ断器１のし中
断状態における等価錦路１ｉｉｌを第３図に示す。図に
おいて、公、２９ＩＩｉ夫々真空し中断器ｌの設置され
た回路の電＠＞よび負荷、（資）、３１は夫々一定電Ｉ
ｉ８とシールド１０間の抵抗および静電容量、３２ ＃
３３ ａ夫々可動電極９とシールド１０間の抵抗およ
び静電容量、３４ａ、３４ｂＦｉ夫々絶縁筒２の抵抗、
３Ｉ３＃ｉシールド１Ｇと大地間の静電容量、あ、３７
＃ｉ矢青し中断状態における電極８．９閣の抵抗および
静電容量である。真空しゃ断器１の内部の真空度が劣化
した場合即ち内部圧力が上昇した場合、真空中の誘電率
と大気中の誘電率がはは等しいために静電容量３１ 、
３３ 、３７はほとんど変化しないが抵抗３０，３２，
３６はパツシエ゛ンの法則により着しく低下する。この
ため、絶縁筒２によシ固定匈およ°び可動側のいずれと
も絶縁され浮遊電位ｔ−有するシールド１０と各電極８
．９との間においては投入状ｌＩＡおよびし中断状廟に
かかわらず放電が生じ、又電極８．９間にシいてはし中
断状１ｊＩＡにおいてのみ放電が生じる。こ′−Ｏ放電
轄負荷側にケ°−プル（静電容量）＊ａ、ＩＩＩ導負荷
ＩｉＩあるい紘＾空し中断器のリードのみの静電容量で
も起こる。I move the movable lead 7t by the operating device and move the electrode 8°.
FIG. 3 shows the equivalent bridge circuit 1iil of the vacuum breaker 1 in the interrupted state. In the figure, the voltage of the circuit in which the vacuum interrupter l is installed, and the load, 31, are the constant voltage I, respectively.
Resistance and capacitance between i8 and shield 10, 32#
33a resistance and capacitance between the movable electrode 9 and the shield 10, 34a, 34bFi resistance of the insulating cylinder 2,
3I3#i Capacitance between shield 1G and ground, ah, 37
#i The blue arrow indicates the resistance and capacitance of the electrode 8.9 in the suspended state. When the degree of vacuum inside the vacuum breaker 1 deteriorates, that is, when the internal pressure increases, the capacitance 31,
33 and 37 hardly change, but the resistances 30, 32,
36 decreases steadily due to Passier's law. For this reason, the shield 10 and each electrode 8 are insulated from both the fixed and movable sides by the insulating tube 2 and have a floating potential t-.
．． Between electrodes 8 and 9, a discharge occurs regardless of the insertion point lIA and the interruption point 1jIA, and between the electrodes 8 and 9, a discharge occurs only at the interruption point 1jIA. This occurs even if there is a cable (capacitance) *a on the load side of the O discharge, a conductive load IiI, or the capacitance of only the lead of the circuit interrupter.
第４図体）は真空しゃ断器ｌの真空度が正常なときａｔ
極関電圧を示し、籐４図伊）紘アンテナ１６にょる受信
信号を示す。すなわち真空度が正常なときは、第４図（
Ａ）に示すように電極８，９間の電圧波形は正弦波であ
り、アンテナ１６には信号が入力されない。第５図μ）
および（Ｂ）は真空し中断器ｌの真空度が劣化し良場合
の極間電圧およびアンテナ１６の受信信号を示ル、電極
８と９間の極間電圧は、放電が始まると、第５図（Ａｌ
に示すようにある電圧以上には上昇せずリップルする。Figure 4) is when the vacuum level of the vacuum breaker l is normal.
Figure 4 shows the signal received by the Hiro antenna 16. In other words, when the degree of vacuum is normal, Fig. 4 (
As shown in A), the voltage waveform between the electrodes 8 and 9 is a sine wave, and no signal is input to the antenna 16. Figure 5 μ)
and (B) shows the inter-electrode voltage and the received signal of the antenna 16 when the vacuum degree of the interrupter l deteriorates and is good.The inter-electrode voltage between the electrodes 8 and 9 is 5. Figure (Al
As shown in the figure, the voltage does not rise above a certain level and ripples.
このリップル開始時に第５図β）に示すようにパルス的
な信号が発生し、と、の信号を検出し、判定することに
よル真空し中断器ｌの真空度劣化を検知できる。この場
合、極間以外の他の部分でコロナ放電が発生しても備考
波形は異なるため検出特性に、は倒ら影曽がない。At the start of this ripple, a pulse-like signal is generated as shown in FIG. In this case, even if corona discharge occurs in other parts than between the electrodes, the waveform will be different, so the detection characteristics will not be affected.
真空し中断器ｌの真空度が劣化時において、アンテナ１
６がパルス的な信号を受信すると、第２図に示すように
バッファアンプ田はこれを増幅して出力信号ＩＩｓ を
発する。アンプスをこれをさらに増幅して第１の比較器
すに増幅された信号８１ｔ−人力する。第１の比較器５
においては、信号８１と所定の基準電圧とを比較して信
号８ｍｔ積分協２６に入力する。積分器加は第１の比較
器５の偏差信号を積分して出力信号８４ を第２の比較
器２７に入力する。第２の比較！！！Ｆ２７は信号ｓ４
を所定の基準電圧と比較してその偏差電圧信号８ｓ ｔ
−出力し豐報器を良は表示ｌｌ１Ｉを動作させ、真空度
劣化が検出される。When the vacuum level of the vacuum interrupter l deteriorates, the antenna 1
6 receives a pulse-like signal, the buffer amplifier amplifies it and issues an output signal IIs as shown in FIG. This is further amplified by the amplifier and the amplified signal 81t is sent to the first comparator. First comparator 5
, the signal 81 is compared with a predetermined reference voltage and inputted to the signal 8mt integration section 26. The integrator integrates the deviation signal of the first comparator 5 and inputs an output signal 84 to the second comparator 27. Second comparison! ! ! F27 is signal s4
is compared with a predetermined reference voltage and its deviation voltage signal 8s t
- Output and operate the indicator ll1I to indicate if the alarm is good, and vacuum deterioration is detected.
実験測定結果によれば、長さが５０ ａｍ 、断面積が
１１
２−のビニール被機銅線ケーブルをアンテナ１６に使用
したとき、５０副離れた位置にある真空［０３Ｔｏｒｒ
、 ９度の６０ｇｘｖ用真空し中真空の開−極時に例え
ば６．９乙Ｇ中４に’Ｖの電圧を印加すると電極間にて
放電した。これを上記アンテナにて捕え検出器に入力す
ると、増幅器からの信号はゲインが１０．０００のとき
０．４ｖの振れ−となった。According to experimental measurement results, when a vinyl-coated copper wire cable with a length of 50 am and a cross-sectional area of 11 2 - is used as the antenna 16, a vacuum [03 Torr
When a voltage of, for example, 4'V in 6.9g was applied when the electrodes were opened in a 60gxv vacuum at 9 degrees, a discharge occurred between the electrodes. When this was captured by the antenna and inputted to the detector, the signal from the amplifier had a swing of 0.4V when the gain was 10.000.
第６図真空し中断器ｌが閉極状態であるときの重置明の
館２実施例を示し、第７図は真蜘しゃ断・器ｌの閉極状
態における等価回路である。この第２実施例においては
、リング状のアンテナ１６ ａを用い、このアンテナ１
６１Ｌ’ｉ真空しゃ断器１の近傍たとえば５０ａｗの位
置に配設するもの′である。アンテナ１６ｍのリング部
の径は１０ａｗその直線部の長さは５０国である。Fig. 6 shows an embodiment of the superposition light house 2 when the vacuum interrupter l is in the closed state, and Fig. 7 is an equivalent circuit of the vacuum interrupter l in the closed state. In this second embodiment, a ring-shaped antenna 16a is used, and this antenna 1
61L'i is arranged near the vacuum breaker 1, for example at a position of 50aw. The diameter of the ring part of the 16m antenna is 10aw, and the length of the straight part is 50mm.
上記第２実施例の真空度監視装置によれば、固定リード
５、固定リード７、固定電極８および可動リード９と、
浮遊電位である中間シールド１０間で真空度劣化時に放
電が行なわれる。この場合、リード棒および電極と中間
シールド間の固有静電容量は、開極時の電極間の見掛は
上の静電容量に比べて小さい九め、放電エネルギーも小
さく信号としても小さくなる。この場合、前述したよう
に、例えば５０ａｌ離れた位置にある真空度Ｑ、３ Ｔ
ｏｒｒ、 ９度の６．９ Ｋ ’ＩＩ４−４ Ｋ ｖの
電圧印加をすると放電した。これをアンテナ１６＆で捕
え検出器に入力すると増幅器からや信号はゲインが１０
，０００のとき０．３ｖの振れ幅となった。According to the vacuum monitoring device of the second embodiment, the fixed lead 5, the fixed lead 7, the fixed electrode 8, and the movable lead 9,
A discharge occurs between the intermediate shields 10 which are at a floating potential when the degree of vacuum deteriorates. In this case, the specific capacitance between the lead rod and the electrode and the intermediate shield is smaller than the apparent capacitance between the electrodes when the electrodes are opened, and the discharge energy is also small and the signal is also small. In this case, as mentioned above, for example, the degree of vacuum Q, 3 T located at a distance of 50 al.
When a voltage of 6.9 K'II4-4 Kv at 9 degrees was applied, a discharge occurred. When this is captured by antenna 16& and input to the detector, the signal from the amplifier has a gain of 10.
,000, the amplitude was 0.3V.
上述の各実施例におけ為真空度監視装置によれは、既に
使用されている真空しゃ断器に適用できるものであり、
完全にアースシールドされているものを除き、はとんど
の機種に適用できるとともに、活線状態で真空度劣化を
検知できる。また、検知部の電源としては商用電源又は
電池を用いてもよく、コンパクトとｔｎ＊帯に便利であ
る。なお、真空度劣化検出感度は放電ギャップか大のｔ
１５が高真空でも検出可能となるか、羊のｍははぼｌＯ
テｏｒｒ、台から１０ Ｔｏｒｒ、台である。The vacuum level monitoring device in each of the above embodiments can be applied to a vacuum breaker that is already in use.
It can be applied to most models, except for those that are completely earth-shielded, and can detect vacuum deterioration in live wire conditions. Furthermore, a commercial power source or a battery may be used as a power source for the detection unit, which is convenient for compact size and TN* band. In addition, the vacuum deterioration detection sensitivity depends on the discharge gap or large t.
15 can be detected even in high vacuum, the m of sheep is about 1O
The temperature ranges from 10 Torr to 10 Torr.
以上のように本発明において控、真空し中断器の外部に
放電時に発生するパルス的信号を受信するアンテナを設
けており、真空しゃ断ａｒｔ真ｇ！度劣化時に内部で放
電を生じ、このアンテナによシ受信され友償号を電気的
に処理して真空度劣化を検出することができる。このた
め、真空度劣化の検出に際して真空し中断器を一路から
取外す必要がな−とともに真空し中断器の構造を変えた
ｐ高電圧の別電源を設けたりする必要がなく、。簡単か
つ安価に真空度劣化を正確に検出することができる。As described above, in the present invention, an antenna is provided outside the vacuum interrupter to receive a pulse signal generated during discharge, and the vacuum interrupter is connected to the vacuum interrupter. When the vacuum level deteriorates, a discharge occurs internally, and the signal received by this antenna is electrically processed to detect the vacuum level deterioration. Therefore, when detecting deterioration of the vacuum degree, there is no need to remove the vacuum interrupter from the line, and there is no need to provide a separate high-voltage power source with a different structure for the vacuum interrupter. Deterioration of vacuum degree can be accurately detected easily and inexpensively.
第１図は本発明の第１の実施例に係る真空度監視装置を
備えた真空し中断器の縦断正面図、第２図は検出部の詳
細を示すブロック線図、第３図は第１の実施例における
真空し中断器のし中断状−における勢価回路図％＃Ｉ４
図および第５図は第１の実施例における真空し中断器の
動作波形図、第６Ｅは本発明の禦２の実施例に係る真空
度監視装置ｌｔ備え九真空し中断器の縦断正面図、第７
図線その尋価回路である。
１−・真空しゃ新編、１６ 、１６１・・・アンテナ、
１８−・・検出器、１９・・・増幅部１加−判定部・第
１図
第２図
第３図
′１ｉ５Ｙ！！Ｊ
第６図
手続補正書（自発）
昭和６７年４月６ 日
昭和６６都特許膠第１７８８８７４＃
２、発明の基体
跋し中断器の真空度微視装置
３、補正をする者
事件との関係 出願人
（１１Ｇ）株式会社 −電 会
４、代理人〒１０４
東京都中央区明石町１番２９号 液済会ビル昭和６ｓ年
１月 １日
唱和６・都轡許履＄１１７１８８７勺
２・発明０４称
真空し中斬＠０真空置監視装置
３、補正をする者
事件との関係 出願人
（・１０）株式会社 明 電 舎
４、代理人〒１０４
東京都中央区明石町１８２９号 液済会ビル５、補正の
対象
明細書の発明の詳細な説ｆＩＯ欄
ａ補正Ｏ内容
〔別紙〕
（１）−（イ）明細書第６頁第６行目に、「パッシェン
の法則によ）」とあろのを「パッシェンの法則に影響さ
れる前駆現象によシ」と補正する。
（１）−（ロ）明細書第６頁第１８行目に、「静電容量
でも起こる６」とあるのを「静電容量によって蜜化する
。」と補正する。
（１） −ｆ−３明細書第９頁第１行目に、「１９０用
」とあるのを「ａ９に’Ｆ用」と補正する◎（１）−に
）明−書第９頁第２行目ニ、「ａ９／Ｖ／−ｊ−−４に
！ｉＦ Ｊ ト１６ｅＤ ｔ ｒ ａ９／、ｑａ−４ｋ
ＶＪ ト補正する。
（１）−（ホ）明細書＠ｌＯ頁第１行目に、「動す−ド
タと、」とあるのを「動電極ｔと−１」と補正する◇
（１）−（へ）明細書第１１頁第８行目ニ、「ａ９ｔｖ
／Ｖ／Ｔ”−４１Ｖ Ｊ トあるのをｒ ａ ９ｋＶ’
ｙ７−４ｋＶ Ｊと補正する。
（１） −（）） 明細書第１１頁第６行目に、「高
真空でも検出可能となるが」とあるのを「高真空でもパ
ッシェンの法則に影響される前駆現象による放電電圧が
低下するので検出可能となるが」と補正する。FIG. 1 is a longitudinal sectional front view of a vacuum interrupter equipped with a vacuum level monitoring device according to the first embodiment of the present invention, FIG. 2 is a block diagram showing details of the detection section, and FIG. Vacuum interrupter in the embodiment of the vacuum interrupter in the interrupt state - circuit diagram %#I4
5 and 5 are operational waveform diagrams of the vacuum interrupter in the first embodiment, and FIG. 6E is a longitudinal sectional front view of the vacuum interrupter equipped with the vacuum degree monitoring device lt according to the second embodiment of the present invention. 7th
The diagram shows the price circuit. 1-・Vacuum Sha New Edition, 16, 161...Antenna,
18--Detector, 19--Amplifying section 1 addition-judgment section, Fig. 1, Fig. 2, Fig. 3'1i5Y! ! J Figure 6 Procedural Amendment (Spontaneous) April 6, 1988 Tokyo Metropolitan Patent No. 1788874 # 2, Vacuum degree microscopic device for interrupter that lacks the basis of the invention 3, Relationship with the case of the person making the amendment Applicant (11G) Co., Ltd. - Denkai 4, Agent Address: 1-29 Akashi-cho, Chuo-ku, Tokyo, 104 Japan, Suiseikai Building, January 1, 1939, Shōwa 6, Toban Gori, $1171,887, 2, Invention 04 Name Vacuum and Medium Cut @ 0 Vacuum Position Monitoring Device 3, Relationship with the Amendment Case Applicant (10) Meidensha Co., Ltd. 4, Agent: 1829 Akashi-cho, Chuo-ku, Tokyo, 104, Suiseikai Bill 5, Detailed explanation of the invention in the specification to be amended fIO column a Amendment O contents [Attachment] (1) - (a) In the 6th line of page 6 of the specification, "according to Paschen's law" Arono corrects him by saying, ``It's a precursor phenomenon that is influenced by Paschen's law.'' (1)-(B) In the 18th line of page 6 of the specification, the phrase ``occurs even with capacitance6'' is corrected to ``condensation occurs due to capacitance.'' (1) - In the first line of page 9 of the f-3 specification, the phrase "for 190" is corrected to "for a9'F" ◎ (1) 2nd line d, “a9/V/-j--4! iF J ト16eD t r a9/, qa-4k
VJ correction. (1) - (e) In the first line of page 1 of the specification, correct the phrase "moving - dot" to "moving electrodes t and -1" ◇ (1) - (f) Specification Book 11, line 8, ``a9tv
/V/T"-41V J 9kV'
Correct as y7-4kV J. (1) - ()) On page 11, line 6 of the specification, the phrase "can be detected even in high vacuum" is replaced with "even in high vacuum, the discharge voltage decreases due to a precursor phenomenon affected by Paschen's law." ``This makes it possible to detect it.''
Claims (1)
断器において、真空し中断器の外部近傍に設妙られ、前
記内部放電により生じるパルス信号を受信するアンテナ
と、諌アンテナに電気的に接続され、アンテナにより受
信した信号により前記真空度の良否を判定する真空度判
定部とを備え、該真空ｆ４１１１定部の出力によシ真空
度劣化を検出するようにしたことｔＩｌ＃−徽とする真
空し中断器の真空度ｌｌ視装置。In a vacuum interrupter that generates internal discharge when the internal vacuum level deteriorates, an antenna is installed near the outside of the vacuum interrupter to receive the pulse signal generated by the internal discharge, and an electrical connection is made to the antenna. and a vacuum degree determining section that is connected to the vacuum device and determines whether the degree of vacuum is good or bad based on the signal received by the antenna, and the deterioration of the vacuum degree is detected by the output of the vacuum f4111 constant section. A device to monitor the vacuum level of the vacuum interrupter.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56173887A JPS5893128A (en) | 1981-10-30 | 1981-10-30 | Vacuum degree monitor for vacuum breaker |
| KR8204846A KR860001784B1 (en) | 1981-10-30 | 1982-10-28 | Vacuum rate monitor for vacuum circuit breaker |
| US06/437,678 US4547769A (en) | 1981-10-30 | 1982-10-29 | Vacuum monitor device and method for vacuum interrupter |
| DE8282305761T DE3270153D1 (en) | 1981-10-30 | 1982-10-29 | Vacuum monitor for vacuum interrupter and use of the vacuum monitor |
| EP82305761A EP0079181B1 (en) | 1981-10-30 | 1982-10-29 | Vacuum monitor for vacuum interrupter and use of the vacuum monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56173887A JPS5893128A (en) | 1981-10-30 | 1981-10-30 | Vacuum degree monitor for vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5893128A true JPS5893128A (en) | 1983-06-02 |
Family
ID=15968943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56173887A Pending JPS5893128A (en) | 1981-10-30 | 1981-10-30 | Vacuum degree monitor for vacuum breaker |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS5893128A (en) |
| KR (1) | KR860001784B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002049057A1 (en) * | 2000-12-12 | 2002-06-20 | Kabushiki Kaisha Meidensha | Method and device for monitoring vacuum degree in vacuum circuit breaker |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246478A (en) * | 1975-10-13 | 1977-04-13 | Tokyo Shibaura Electric Co | Device for detecting improper vacuum of vacuum switch |
-
1981
- 1981-10-30 JP JP56173887A patent/JPS5893128A/en active Pending
-
1982
- 1982-10-28 KR KR8204846A patent/KR860001784B1/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5246478A (en) * | 1975-10-13 | 1977-04-13 | Tokyo Shibaura Electric Co | Device for detecting improper vacuum of vacuum switch |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002049057A1 (en) * | 2000-12-12 | 2002-06-20 | Kabushiki Kaisha Meidensha | Method and device for monitoring vacuum degree in vacuum circuit breaker |
| US6952102B2 (en) | 2000-12-12 | 2005-10-04 | Kabushiki Kaisha Meidensha | Method and apparatus for monitoring vacuum degree of vacuum in vacuum interrupter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR860001784B1 (en) | 1986-10-22 |
| KR840002123A (en) | 1984-06-11 |
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