TWI404099B - Vacuum switch device and its vacuum pressure diagnosis method - Google Patents
Vacuum switch device and its vacuum pressure diagnosis method Download PDFInfo
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- TWI404099B TWI404099B TW97146777A TW97146777A TWI404099B TW I404099 B TWI404099 B TW I404099B TW 97146777 A TW97146777 A TW 97146777A TW 97146777 A TW97146777 A TW 97146777A TW I404099 B TWI404099 B TW I404099B
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- 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
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Abstract
Description
本發明係關於真空開關裝置及其之真空壓力診斷方法，特別是關於，適合於具備在運轉中診斷真空閥內的真空壓力之健全性的功能者之真空開關裝置及其之真空壓力診斷方法。The present invention relates to a vacuum switch device and a vacuum pressure diagnosing method thereof, and more particularly to a vacuum switch device and a vacuum pressure diagnosing method thereof, which are suitable for a function of diagnosing the soundness of a vacuum pressure in a vacuum valve during operation.
一般而言，真空開關裝置係於真空容器內部進行電極的開關動作，真空容器內部的壓力(真空壓力)會對裝置的耐電壓性能及斷電性能造成影響。第4圖係表示真空中的放電特性之所謂的帕申曲線(Paschen curve)，表示將電極間的真空絕緣間隙長設為5mm時的壓力與放電開始電壓的相關性。如該圖所示般，放電開始電壓係與真空壓力有依存關係，由此瞭解到真空容器中之耐電壓性能及斷電性能係與真空壓力具有依存關係。因此，真空開關裝置為了保證彼等的性能，需要定期性針對真空壓力是否適當，即真空壓力的健全性進行診斷。In general, the vacuum switch device is used for switching the electrodes inside the vacuum vessel, and the pressure inside the vacuum vessel (vacuum pressure) affects the withstand voltage performance and power-off performance of the device. Fig. 4 is a so-called Paschen curve showing the discharge characteristics in a vacuum, and shows the correlation between the pressure at the time when the vacuum insulation gap length between the electrodes is 5 mm and the discharge start voltage. As shown in the figure, the discharge start voltage is dependent on the vacuum pressure, and it is understood that the withstand voltage performance and the power-off performance in the vacuum vessel have a dependency relationship with the vacuum pressure. Therefore, in order to ensure their performance, the vacuum switchgear needs to periodically diagnose whether the vacuum pressure is appropriate, that is, the soundness of the vacuum pressure.
此真空壓力的健全性診斷，係藉由將開關部運出配電盤的外部後，對極間施加特定的高電壓，藉由閃絡之有無來診斷真空壓力的健全性而進行健全性診斷。在此情形時，真空壓力診斷時，必須使裝置停電，且用以施加高電壓的高電壓電源需要另外準備，診斷時的負擔增加。為了不使診斷時的負擔增加，以運轉中的診斷，即不使裝置停電來進行診斷為佳，作為可此種診斷成為可行之真空開關裝置，例如有專利文獻1所記載者。The soundness diagnosis of the vacuum pressure is performed by transporting the switch unit to the outside of the switchboard, applying a specific high voltage to the poles, and diagnosing the soundness of the vacuum pressure by the presence or absence of flashover to perform soundness diagnosis. In this case, when the vacuum pressure is diagnosed, the device must be powered off, and the high-voltage power source for applying the high voltage needs to be additionally prepared, and the burden at the time of diagnosis increases. In order to prevent the burden on the diagnosis from being increased, it is preferable to perform the diagnosis in the operation, that is, to perform the diagnosis without causing the device to be powered off. For example, the vacuum switch device that can be used for such diagnosis is disclosed in Patent Document 1.
於專利文獻1記載有：和浮動電位的金屬容器相向來配置真空壓力診斷用的量測端子，此量測端子係與前述金屬容器一同地被模鑄於絕緣物內，該量測端子係與一方被接地的電容器連接，將發生於該電容器的兩端之電壓藉由比較器與事先設定好的臨界值比較，使用藉由以該比較器的輸出來動作的繼電器接點來ON/OFF的警報燈，來診斷真空壓力的健全性之真空開關裝置。Patent Document 1 discloses that a measurement terminal for vacuum pressure diagnosis is disposed opposite to a metal container having a floating potential, and the measurement terminal is molded in an insulator together with the metal container, and the measurement terminal is One of the capacitors connected to the ground is connected, and the voltage generated at both ends of the capacitor is compared with a threshold value set in advance by a comparator, and is turned ON/OFF by using a relay contact that operates with the output of the comparator. A warning light, a vacuum switch device for diagnosing the soundness of vacuum pressure.
於前述裝置中，藉由診斷員定期診斷時辨識前述警報燈，可以診斷真空壓力的健全性。In the foregoing apparatus, the soundness of the vacuum pressure can be diagnosed by recognizing the warning lamp when the diagnostician periodically diagnoses.
[專利文獻1]日本專利特開2007-80594號公報[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-80594
但是，關於配置在需要家庭附近之二次變電所(設置於路旁之配電箱)，真空開關裝置係被外箱所覆蓋，為了辨識前述裝置的警報燈，需要進入外箱的內部，難於診斷真空壓力的健全性。However, regarding the secondary substation (the distribution box installed at the roadside) that is disposed near the home, the vacuum switch device is covered by the outer box, and in order to recognize the warning light of the device, it is necessary to enter the inside of the outer box, which is difficult. Diagnose the soundness of vacuum pressure.
另外，觀看警報燈的機會，只限於數年進行1次的定期診斷時。因此，真空壓力劣化，警報燈場期間持續點燈之情形時，定期診斷時因警報燈本身劣化而故障，結果被視為真空壓力的劣化，恐有損真空壓力的診斷之可靠性。In addition, the chance of viewing the warning light is limited to the periodic diagnosis once a few years. Therefore, when the vacuum pressure is deteriorated and the lighting is continued during the warning light field, the warning lamp itself is deteriorated during the periodic diagnosis, and as a result, the vacuum pressure is deteriorated, and the reliability of the diagnosis of the vacuum pressure may be impaired.
因此，於如前述之裝置中，從故障保安思想的觀點而言，必須藉由新設置反轉電路，使得訊號電壓健全時為ON、劣化時為OFF，或設置警報燈診斷用的另外的電路，來診斷警報燈的健全性，構造變得複雜，且成本不得不提高。Therefore, in the above-described apparatus, from the viewpoint of the fail-safe thinking, it is necessary to newly set the inversion circuit so that the signal voltage is ON when it is sound, OFF when it is degraded, or another circuit for warning lamp diagnosis is provided. To diagnose the soundness of the warning light, the structure becomes complicated, and the cost has to be increased.
本發明係有鑑於前述問題點，其第1目的在於提供：可以簡單地進行真空壓力的健全性之診斷的真空開關裝置。The present invention has been made in view of the above problems, and a first object thereof is to provide a vacuum switchgear that can easily diagnose the soundness of a vacuum pressure.
另外，本發明的第2目的在於提供：可靠性提升，且可以簡單地進行真空壓力的健全性之診斷的真空開關裝置之真空壓力診斷方法。Further, a second object of the present invention is to provide a vacuum pressure diagnosing method for a vacuum switchgear that can improve reliability of vacuum pressure and can easily perform diagnosis of vacuum pressure.
本發明之真空開關裝置，為了達成前述第1目的，係具備：內部為真空，且此內部具有由固定電極及可動電極所形成的至少一對的主電路之浮動電位的金屬容器；及進行前述可動電極之與固定電極的開關操作之操作機構；及對前述主電路供給電力的主線；及將從前述主電路來之電力供給至負載側之纜線，且將彼等收容於框體內所形成的真空開關裝置，其特徵為：於前述框體內，具備：連接手段，該連接手段係可裝脫地連接有診斷前述金屬容器內的真空壓力之真空壓力診斷手段。In order to achieve the first object, the vacuum switch device of the present invention includes a metal container having a vacuum inside and having a floating potential of at least one pair of main circuits formed by a fixed electrode and a movable electrode; An operating mechanism for switching operation of the movable electrode and the fixed electrode; and a main line for supplying electric power to the main circuit; and a cable for supplying electric power from the main circuit to the load side, and accommodating the same in the casing The vacuum switch device is characterized in that the inside of the casing includes: a connecting means for detachably connecting a vacuum pressure diagnosing means for diagnosing a vacuum pressure in the metal container.
另外，本發明之真空開關裝置之真空壓力診斷方法，為了達成前述第2目的，係於通過將從前述主電路來之電力供給至負載側的負載側導體而被施加電壓的連接手段，可裝脫地連接判別前述主電路是否被送電之診斷手段，藉由該診斷手段，依據被施加於前述連接手段的電壓來判別前述主電路是否被送電，來診斷該診斷手段的健全性，於判別該診斷手段為健全後，將前述診斷手段可裝脫地連接於別的連接手段，藉由此診斷手段來診斷前述金屬容器內的真空壓力的健全性。In addition, in order to achieve the second object, the vacuum pressure diagnosing method of the vacuum switchgear according to the present invention is a connection means for applying a voltage by supplying electric power from the main circuit to the load side conductor on the load side. The diagnosis means for determining whether or not the main circuit is powered by the ground connection, and the diagnosis means determines whether the main circuit is powered according to the voltage applied to the connection means, thereby diagnosing the soundness of the diagnosis means, and discriminating the After the diagnosis means is completed, the diagnostic means can be detachably connected to another connection means, and the diagnostic means can be used to diagnose the soundness of the vacuum pressure in the metal container.
如依據本發明之真空開關裝置，可以簡單地進行真空壓力的健全性之診斷。According to the vacuum switch device of the present invention, the diagnosis of the soundness of the vacuum pressure can be easily performed.
另外，如依據本發明之真空壓力診斷方法，可靠性得以提升，且可以簡單地進行真空壓力的健全性之診斷。Further, according to the vacuum pressure diagnosing method according to the present invention, the reliability is improved, and the diagnosis of the soundness of the vacuum pressure can be easily performed.
以下，利用第1圖及第2圖來說明本發明之真空開關裝置之實施例。Hereinafter, an embodiment of the vacuum switchgear of the present invention will be described with reference to Figs. 1 and 2 .
如第1及第2圖所示般，真空開關裝置1係由：開閉部100、及設置於該開閉部100的上部，且進行該開閉部100的電極之開關操作的操作機構3、及連接於前述開閉部100，且對該開閉部100供給電力的主線4、及連接於開閉部100，且將來自該開閉部100的電力供給至負載側的纜線5、及將此等收容於其內部的金屬製框體2概略地構成。As shown in FIGS. 1 and 2, the vacuum switch device 1 includes an opening and closing unit 100, an operating mechanism 3 provided at an upper portion of the opening and closing unit 100, and an opening and closing operation of an electrode of the opening and closing unit 100, and a connection. In the opening and closing unit 100, the main line 4 that supplies electric power to the opening and closing unit 100, and the cable that is connected to the opening and closing unit 100, and supplies electric power from the opening and closing unit 100 to the load side, and the like are accommodated in the opening and closing unit 100. The inner metal frame 2 is roughly configured.
前述之開閉部100係由：斷電器及斷路開閉器用之真空閥101、及接地開閉器用之真空閥102、及連結該真空閥101與主線4之主線側導體112、及連接該主線側導體112與主線4之襯套113、及連結真空閥101與纜線5之負載側導體116、及連接該導體116與纜線5之襯套117、及一端連接於負載側導體116之電壓檢測用電容器152所構成。The opening and closing unit 100 includes a vacuum valve 101 for a breaker and a circuit breaker, a vacuum valve 102 for a grounding switch, a main line side conductor 112 that connects the vacuum valve 101 and the main line 4, and a main line side conductor. 112 and the bushing 113 of the main line 4, the load side conductor 116 connecting the vacuum valve 101 and the cable 5, and the bushing 117 connecting the conductor 116 and the cable 5, and the voltage detecting terminal connected to the load side conductor 116 at one end The capacitor 152 is constructed.
設置於開閉部100內之具有斷電及斷路功能的真空閥101，係藉由：設定為浮動電位之內部為真空的金屬容器12、及被收容於該金屬容器12的內部，相互相向，構成主電路之2對的固定電極110、114及可動電極120、121而概略地構成。固定電極110係被固定導體111的一端所支撐，該固定導體11的另一端，係被連接於主線側導體112。可動電極120係被可動導體122的一端所支撐，該可動導體122的另一端，係連結於連結導體124的單側。另外，可動電極121係被可動導體123的一端所支撐，該可動導體123的另一端係被連結於前述的連結導體124的另一側。固定電極114係被固定導體115的一端所支撐，該固定導體115的另一端係被連接於導體116。The vacuum valve 101 having the power-off and disconnection functions provided in the opening and closing unit 100 is formed by a metal container 12 that is set to a vacuum inside and a vacuum chamber, and is housed in the inside of the metal container 12, and is configured to face each other. The two pairs of fixed electrodes 110 and 114 and the movable electrodes 120 and 121 of the main circuit are roughly configured. The fixed electrode 110 is supported by one end of the fixed conductor 111, and the other end of the fixed conductor 11 is connected to the main line side conductor 112. The movable electrode 120 is supported by one end of the movable conductor 122, and the other end of the movable conductor 122 is coupled to one side of the connecting conductor 124. Further, the movable electrode 121 is supported by one end of the movable conductor 123, and the other end of the movable conductor 123 is coupled to the other side of the above-described connecting conductor 124. The fixed electrode 114 is supported by one end of the fixed conductor 115, and the other end of the fixed conductor 115 is connected to the conductor 116.
於固定電極110與可動電極120及固定電極114與可動電極121的周圍，個別配置有電弧遮蔽件119，該電弧遮蔽件119係由覆蓋電極的周圍之絕緣性的陶瓷筒118所夾持。陶瓷筒118係藉由電弧遮蔽件119，於可動電極的投入及斷電時，防止來自電極所放出的電弧附著。另外，前述連結導體124係介由陶瓷桿125而與操作桿126連結。於操作桿126與金屬容器12之間，設置有一面維持真空狀態一面操作操作機構3用之波紋管130，進而，操作桿126係突出至真空閥101的外部，對於陶瓷桿125位於相反側的端部，係藉由絕緣桿127被支撐，且與操作機構3連結。An arc shield 119 is disposed separately around the fixed electrode 110 and the movable electrode 120, and between the fixed electrode 114 and the movable electrode 121. The arc shield 119 is sandwiched by an insulating ceramic cylinder 118 covering the periphery of the electrode. The ceramic cylinder 118 is prevented by the arc shield 119 from adhering to the arc emitted from the electrode when the movable electrode is turned on or off. Further, the connecting conductor 124 is coupled to the operating lever 126 via the ceramic rod 125. Between the operating lever 126 and the metal container 12, a bellows 130 for operating the operating mechanism 3 is provided while maintaining a vacuum state. Further, the operating lever 126 protrudes to the outside of the vacuum valve 101, and the ceramic rod 125 is located on the opposite side. The end portion is supported by the insulating rod 127 and coupled to the operating mechanism 3.
如第2圖所示般，開閉部100的各部位及真空壓力診斷用之導電性端子50，係藉由環氧樹脂等之絕緣物20而被模鑄成為一體，真空閥101與端子50係被相互絕緣。端子50係位於金屬容器12的外部，與金屬容器12相向配置。另外，該絕緣物20的表面被施以導電塗裝21，該導電塗裝21係被設為接地電位。As shown in Fig. 2, each part of the opening and closing unit 100 and the conductive terminal 50 for vacuum pressure diagnosis are integrally molded by an insulator 20 such as an epoxy resin, and the vacuum valve 101 and the terminal 50 are connected. They are insulated from each other. The terminal 50 is located outside the metal container 12 and is disposed to face the metal container 12. Further, the surface of the insulator 20 is applied with a conductive coating 21 which is set to a ground potential.
另一方面，接地開閉用之真空閥102係由：絕緣性之陶瓷筒140、及周圍藉由位於其之兩端的端子板141、142所覆蓋之固定電極145、及與該固定電極145相向的可動電極146概略地構成。前述固定電極145係被固定導體143的一端所支撐，固定導體143的另一端係被連接於導體116。另外，前述可動電極146係介由波紋管148而由被端子板141所支撐的可動導體141的一端所支撐，該可動導體144，其一部份係從陶瓷筒140及端子板141、142而突出於外部。波紋管148係追隨可動導體144的動作，且藉由設置該波紋管148可以將可動導體144與端子板141之間予以密閉。於可動導體144中，和可動電極146被支撐者相反側的端部，係與被設為接地的連結導體149連結，該連結導體149係藉由扣件150與絕緣桿151連接。該絕緣桿151係於其上部和操作機構3連結。真空閥102內係藉由在真空爐中被高溫軟銲，完成各部的接合。On the other hand, the vacuum valve 102 for grounding and closing is composed of an insulating ceramic cylinder 140, a fixed electrode 145 surrounded by terminal plates 141 and 142 at both ends thereof, and a facing electrode 145. The movable electrode 146 is roughly configured. The fixed electrode 145 is supported by one end of the fixed conductor 143, and the other end of the fixed conductor 143 is connected to the conductor 116. Further, the movable electrode 146 is supported by the bellows 148 at one end of the movable conductor 141 supported by the terminal plate 141, and a part of the movable conductor 144 is from the ceramic cylinder 140 and the terminal plates 141, 142. Stand out from the outside. The bellows 148 follows the action of the movable conductor 144, and the bellows 148 is provided to seal the movable conductor 144 and the terminal plate 141. The movable conductor 144 is connected to a connecting conductor 149 which is grounded, and is connected to the insulating rod 151 by a fastener 150. The insulating rod 151 is coupled to the operating mechanism 3 at its upper portion. In the vacuum valve 102, the joining of the respective parts is completed by high-temperature soldering in a vacuum furnace.
與前述之電壓檢測用電容器152的導體116相反側之端部，係被連接於電壓檢測用耦合電容器1001的一端，該電壓檢測用耦合電容器1001的另一端係被接地。另外，於設置於框體2之正面面板1002設置有連接有用以判別前述主電路是否被送電之診斷手段，且是真空開關裝置1中之外部機器之插頭式電壓檢測器2000之連接插頭1003，該連接插頭1003係通過同軸配線1004而與電壓檢測用耦合電容器1001的兩端電性連接，成為被施加有電壓檢測用耦合電容器1001的電壓。電壓檢測器2000例如係由對於LED及連接插頭1003可以插裝的端子所構成。An end portion on the opposite side of the conductor 116 of the voltage detecting capacitor 152 is connected to one end of the voltage detecting coupling capacitor 1001, and the other end of the voltage detecting coupling capacitor 1001 is grounded. Further, the front panel 1002 provided in the casing 2 is provided with a connection plug 1003 for connecting a plug-in voltage detector 2000 of an external device in the vacuum switch device 1 to connect a diagnostic means for determining whether or not the main circuit is powered. The connection plug 1003 is electrically connected to both ends of the voltage detecting coupling capacitor 1001 via the coaxial wiring 1004, and is a voltage to which the voltage detecting coupling capacitor 1001 is applied. The voltage detector 2000 is constituted, for example, by a terminal that can be inserted into the LED and the connection plug 1003.
另一方面，與開閉部100的各部位模鑄為一體的真空壓力診斷用端子50，係位於金屬容器12的外部，且與金屬容器12相向配置。此端子50係被收容於框體2的內部，介由導體與另一端被接地的真空壓力診斷用電容器1005連接。另外，該真空壓力診斷用電容器1005的兩端，係介由同軸配線1007和設置於框體2的正面面板1002之連接插頭1006電性連接，成為真空壓力診斷用電容器1005的電壓被施加於連接插頭1006。此處，連接插頭1006係於前述之連接插頭1003構造共通(相同構造)，成為可以裝脫地連接於電壓檢測器2000。On the other hand, the vacuum pressure diagnostic terminal 50 molded integrally with each part of the opening and closing unit 100 is disposed outside the metal container 12 and disposed to face the metal container 12. The terminal 50 is housed inside the casing 2, and is connected to the vacuum pressure diagnostic capacitor 1005 whose ground is connected to the other end via a conductor. In addition, both ends of the vacuum pressure diagnostic capacitor 1005 are electrically connected to the connection plug 1006 provided on the front panel 1002 of the housing 2 via the coaxial wiring 1007, and the voltage of the vacuum pressure diagnostic capacitor 1005 is applied to the connection. Plug 1006. Here, the connection plug 1006 is connected in common to the above-described connection plug 1003 (same structure), and is detachably connected to the voltage detector 2000.
接著，說明設置於開閉部100內之接地開閉真空閥102的開閉機構。藉由操作機構3，絕緣桿151在上下方向被驅動，伴隨此動作，可動電極146也上下動作，來進行與固定電極145的開閉操作。固定導體143係一端與導體116連接，另外，基於連結導體149係被接地，藉由真空閥102的投入動作，負載被接地。Next, an opening and closing mechanism of the ground opening and closing vacuum valve 102 provided in the opening and closing unit 100 will be described. By the operation mechanism 3, the insulating rod 151 is driven in the vertical direction, and the movable electrode 146 also moves up and down in response to this operation, and the opening and closing operation with the fixed electrode 145 is performed. One end of the fixed conductor 143 is connected to the conductor 116, and the connection conductor 149 is grounded, and the load is grounded by the input operation of the vacuum valve 102.
此處，說明開閉部100內的電流之流動及動作機構。藉由做成前述的構造，對於開閉部100而言，來自主線4之電力係經由：襯套113-導體112-固定導體111-固定電極110-可動電極120-可動導體122-連結導體124-可動導體123-可動電極121-固定電極114-固定導體115-導體116-襯套117之路徑而被通電，且介由纜線5而被供給至負載側。藉由操作機構3，絕緣桿127被上下驅動，伴隨此動作，可動電極120、121係移動至與固定電極110、114之間所形成的進入位置Y0、切離位置Y1、斷路位置Y2之3位置，藉由進入位置Y0-切離位置Y1間的操作，達成斷電功能，藉由切離位置Y1-斷路位置Y2之操作，達成斷路功能。Here, the flow of the electric current in the opening and closing unit 100 and the operation mechanism will be described. With the above-described structure, the power from the main line 4 is via the bushing 113 - the conductor 112 - the fixed conductor 111 - the fixed electrode 110 - the movable electrode 120 - the movable conductor 122 - the connecting conductor 124 - The path of the movable conductor 123 - the movable electrode 121 - the fixed electrode 114 - the fixed conductor 115 - the conductor 116 - the bushing 117 is energized, and is supplied to the load side via the cable 5. With the operation mechanism 3, the insulating rod 127 is driven up and down. With this operation, the movable electrodes 120 and 121 are moved to the entering position Y0, the cutting-off position Y1, and the breaking position Y2 formed between the fixed electrodes 110 and 114. The position is achieved by the operation between the entry position Y0 and the cut-off position Y1, and the power-off function is achieved, and the disconnection function is achieved by the operation of cutting off the position Y1 - the disconnection position Y2.
以下，使用第3圖，說明使用前述之電壓檢測器2000，來判別真空開關裝置1是否被送電及真空壓力之健全性診斷的方法。Hereinafter, a method of determining whether or not the vacuum switch device 1 is powered and the vacuum pressure is diagnosed using the voltage detector 2000 described above will be described with reference to FIG.
首先，開始將用以判別主電路是否被送電之外部機器的電壓檢測器2000連接於連接手段之連接插頭1003(符號200)。在導體116被送電的情形，電壓檢測用電容器152與電壓檢測用耦合電容器1001之間的電位，係與由電壓檢測用電容器152的靜電電容C152與電壓檢測用耦合電容器1001的靜電電容C1001所決定的系統電壓V對於對地電壓V/√3的分壓電壓V1相等，V1=V/√3×C152/(C152＋C1001)。因此，通過同軸配線1004被電性連接，對於連接插頭1003施加了與分壓電壓V1成正比的電壓，電壓檢測器2000如點燈，可以判別主電路為被送電狀態，同時，診斷為減壓檢測器2000為正常(符號204)。另一方面，在電壓檢測器2000不點燈的情形，查明可動電極120、121是否在閉位置，如不在閉位置之情形，操作操作機構3，將可動電極120、121投入閉位置，觀察電壓檢測器2000之點燈狀況。在已經點燈的情形，診斷為電壓檢測器2000是正常9符號204)。在不點燈的情形，或可動電極120、121已經在閉位置而不點燈之情形，診斷為電壓檢測器2000為故障(符號203)，是否送去修理，或使用別的電壓檢測器2000來進行同樣的步驟。First, the voltage detector 2000 for determining an external device for determining whether or not the main circuit is powered is connected to the connection plug 1003 (symbol 200) of the connection means. When the conductor 116 is powered, the potential between the voltage detecting capacitor 152 and the voltage detecting coupling capacitor 1001 is determined by the capacitance C152 of the voltage detecting capacitor 152 and the capacitance C1001 of the voltage detecting coupling capacitor 1001. The system voltage V is equal to the divided voltage V1 to the ground voltage V/√3, and V1=V/√3×C152/(C152+C1001). Therefore, the coaxial wiring 1004 is electrically connected, and a voltage proportional to the divided voltage V1 is applied to the connection plug 1003. When the voltage detector 2000 is turned on, it can be determined that the main circuit is in the power-on state, and the diagnosis is decompression. Detector 2000 is normal (symbol 204). On the other hand, when the voltage detector 2000 is not lit, it is ascertained whether or not the movable electrodes 120 and 121 are in the closed position. If the position is not in the closed position, the operation mechanism 3 is operated, and the movable electrodes 120 and 121 are put into the closed position to observe The lighting condition of the voltage detector 2000. In the case where the light has been turned on, it is diagnosed that the voltage detector 2000 is a normal 9 symbol 204). In the case where the light is not lit, or the movable electrodes 120, 121 are already in the closed position without lighting, it is diagnosed that the voltage detector 2000 is a malfunction (symbol 203), whether it is sent for repair, or another voltage detector 2000 is used. Come through the same steps.
因此，藉由電壓檢測器2000之LED是否點燈，可以診斷真空開關裝置1是否被送電之判別及電壓檢測器2000之健全性(符號204)。Therefore, whether or not the vacuum switch device 1 is powered and the soundness of the voltage detector 2000 (symbol 204) can be diagnosed by whether or not the LED of the voltage detector 2000 is turned on.
接著，將電壓檢測器2000連接於連接手段之連接插頭1006(符號205)。成為浮動電位之金屬容器12與被接地之導電塗裝21之間的靜電容量Cg，與真空閥101內的主電路-金屬容器12間的靜電容量Cm相比，大很多(Cg>>Cm)，因此，在真空壓力健全時，金屬容器12的電位與接地電位幾乎相等。另一方面，真空壓力劣化，在真空閥101內的主電路與金屬容器12之間產生放電的情形時，金屬容器12的電位上升至系統電壓V的對地電壓V/√3。即金屬容器12與真空壓力診斷用端子50及真空壓力診斷用電容器1005之間的電位，在真空壓力健全時，雖然幾乎等於接地電位，但是，真空壓力劣化，在主電路與金屬容器12之間產生放電的情形時，成為和端子50與金屬容器12之間的靜電容量C0與真空壓力診斷用電容器1005的靜電容量C1005所決定之對於系統電壓V的對地間電壓V/√3的分壓電壓V2Next, the voltage detector 2000 is connected to the connection plug 1006 (symbol 205) of the connection means. The electrostatic capacitance Cg between the metal container 12 that becomes the floating potential and the grounded conductive coating 21 is much larger than the electrostatic capacitance Cm between the main circuit and the metal container 12 in the vacuum valve 101 (Cg>>Cm). Therefore, when the vacuum pressure is sound, the potential of the metal container 12 is almost equal to the ground potential. On the other hand, when the vacuum pressure is deteriorated and a discharge occurs between the main circuit in the vacuum valve 101 and the metal container 12, the potential of the metal container 12 rises to the ground voltage V/√3 of the system voltage V. In other words, the potential between the metal container 12 and the vacuum pressure diagnostic terminal 50 and the vacuum pressure diagnostic capacitor 1005 is almost equal to the ground potential when the vacuum pressure is sound, but the vacuum pressure is deteriorated between the main circuit and the metal container 12. When a discharge occurs, the partial pressure of the ground voltage V/√3 with respect to the system voltage V determined by the electrostatic capacitance C0 between the terminal 50 and the metal container 12 and the electrostatic capacitance C1005 of the vacuum pressure diagnostic capacitor 1005 is obtained. Voltage V2
V2=V/√3×C0/(C0＋C1005)V2=V/√3×C0/(C0+C1005)
相等。equal.
因此，成為對於通過真空壓力診斷用電容器1005與同軸配線1007被電性連接的連接插頭1006施加有和分壓電壓V2成正比的電壓。在此情形時，電壓檢測器1000如點燈，可以診斷為真空壓力健全(符號206)，在不點燈的情形時，可以診斷為真空閥101內的真空壓力劣化(符號207)。在被診斷為真空壓力劣化之情形時，真空閥101或開閉部100需要修理或更換。Therefore, a voltage proportional to the divided voltage V2 is applied to the connection plug 1006 that is electrically connected to the coaxial wiring 1007 by the vacuum pressure diagnostic capacitor 1005. In this case, the voltage detector 1000, if lit, can be diagnosed as having a vacuum pressure sound (symbol 206), and in the case of no lighting, can be diagnosed as vacuum pressure degradation in the vacuum valve 101 (symbol 207). When it is diagnosed that the vacuum pressure is deteriorated, the vacuum valve 101 or the opening and closing portion 100 needs to be repaired or replaced.
此處，所求於前述的電壓檢測用電容器152的靜電容量C152與電壓檢測用耦合電容器1001之靜電容量C1001之關係，係在將電壓檢測器2000的動作電壓設為v時，至少要滿足v≦V1，Here, the relationship between the electrostatic capacitance C152 of the voltage detecting capacitor 152 and the electrostatic capacitance C1001 of the voltage detecting coupling capacitor 1001 is at least satisfied when the operating voltage of the voltage detector 2000 is v. ≦V1,
(C1001/C152)≦{(V/√3)-v}/v。(C1001/C152)≦{(V/√3)-v}/v.
因此，電壓檢測用耦合電容器1001的靜電容量C1001及電壓檢測用電容器152的靜電容量C152的比，如在系統電壓V的1/√3與電壓檢測器2000的動作電壓v的差及電壓檢測器2000的動作電壓之比以下，藉由將作為診斷真空壓力的診斷手段之電壓檢測器2000連接於可以裝脫地被連接的連接插頭1006，能夠判別送電狀態之同時，也可以降低警報燈的劣化、故障可能性。Therefore, the ratio of the capacitance C1001 of the voltage detecting coupling capacitor 1001 and the capacitance C152 of the voltage detecting capacitor 152 is such that the difference between the system voltage V is 1/√3 and the operating voltage v of the voltage detector 2000 and the voltage detector In the ratio of the operating voltage of 2000, the voltage detector 2000, which is a diagnostic means for diagnosing the vacuum pressure, is connected to the connection plug 1006 that can be detachably connected, so that the power transmission state can be determined and the deterioration of the warning lamp can be reduced. , the possibility of failure.
另外，所求於前述的端子50與金屬容器12間的靜電容量C0與真空壓力診斷用電容器1005之靜電容量C1005的關係，也至少要滿足v≦V2，Further, the relationship between the electrostatic capacitance C0 between the terminal 50 and the metal container 12 and the electrostatic capacitance C1005 of the vacuum pressure diagnostic capacitor 1005 is required to satisfy at least v≦V2.
(C1005/C0)≦{(V/√3)-v}/v。(C1005/C0) ≦ {(V/√3)-v}/v.
因此，真空壓力診斷用電容器1005的靜電容量C1005及端子50與金屬容器12之間的靜電容量C0之比，如在電壓檢測器2000的動作電壓v對於系統電壓v的1/√3與電壓檢測器2000的動作電壓v之差的比以下，藉由將作為診斷真空壓力的診斷手段之電壓檢測器2000連接於可以裝脫地被連接的連接插頭1003，可以診斷真空壓力的健全性。Therefore, the ratio of the electrostatic capacitance C1005 of the vacuum pressure diagnostic capacitor 1005 and the electrostatic capacitance C0 between the terminal 50 and the metal container 12, such as the operating voltage v of the voltage detector 2000, is 1/√3 and voltage detection of the system voltage v. The voltage detector 2000, which is a diagnostic means for diagnosing the vacuum pressure, is connected to the connection plug 1003 that can be detachably connected, and the soundness of the vacuum pressure can be diagnosed.
於本實施例中，雖將主電路的送電狀態的判別與利用電壓檢測器2000之真空壓力的健全性診斷當成一個步驟來說明，但是，也可以只進行藉由電壓檢測器2000之真空壓力的健全性診斷，可以使簡單地進行真空壓力的健全性診斷成為可能。In the present embodiment, the determination of the power transmission state of the main circuit and the soundness diagnosis of the vacuum pressure by the voltage detector 2000 are described as one step, but only the vacuum pressure by the voltage detector 2000 may be performed. The soundness diagnosis makes it possible to easily diagnose the soundness of the vacuum pressure.
於本實施例中，係具備：與金屬容器12相向配置的端子50；及介由導體，一端連接於該端子50，另一端被接地的真空壓力診斷用電容器1005；及通過同軸配線1007與該真空壓力診斷用電容器1005電性連接，且可以裝脫地連接有外部機器之電壓檢測器2000的連接插頭1006，於診斷時，藉由連接外部機器之電壓檢測器2000，可以診斷真空壓力之健全性，可以簡單地進行診斷。另外，電壓檢測器2000可以裝脫地被連接於連接插頭1006，於診斷後，帶著該電壓檢測器2000，對於別的真空開關裝置，也可以進行同樣的真空壓力之健全性診斷，能以1台來診斷複數個真空開關裝置，便利且具經濟性。In the present embodiment, the terminal 50 is disposed to face the metal container 12, and the vacuum pressure diagnostic capacitor 1005 is connected to the terminal 50 via one end of the conductor, and the other end is grounded; and the coaxial wiring 1007 is used to The vacuum pressure diagnosis capacitor 1005 is electrically connected, and the connection plug 1006 of the voltage detector 2000 of the external device can be detachably connected. By diagnosing the voltage detector 2000 of the external device, the vacuum pressure can be diagnosed. Sex can be easily diagnosed. In addition, the voltage detector 2000 can be detachably connected to the connection plug 1006, and after the diagnosis, the voltage detector 2000 can be carried out, and the same vacuum pressure can be diagnosed for other vacuum switch devices. One set to diagnose multiple vacuum switchgears is convenient and economical.
於本實施例中，雖於金屬容器12的外部，與該金屬容器12相向地配置端子50，但是，也可以使用導電構件來代替端子，於與金屬容器12之間產生靜電容量，可以進行前述的真空壓力之健全性診斷。In the present embodiment, the terminal 50 is disposed outside the metal container 12 so as to face the metal container 12, but a conductive member may be used instead of the terminal, and an electrostatic capacitance may be generated between the metal container 12 and the metal container 12. The soundness of the vacuum pressure is diagnosed.
如依據本實施例，連接插頭1003與前述的連接插頭1006，其構造為共通，在診斷真空壓力的健全性之前，使用電壓檢測器2000，可以事先判別真空開關裝置1是否被送電。除此之外，藉由該判別，也可以同時進行電壓檢測器2000的健全性診斷。藉此，不需要用以診斷電壓檢測器2000本身的額外電路，或以訊號電壓健全時成為ON、劣化時成為OFF之方式而另外新特別設置反轉電路，不會使構造變得複雜或成本提高，能使真空壓力的健全性診斷之可靠性提高。According to the present embodiment, the connection plug 1003 and the aforementioned connection plug 1006 are configured to be common. Before the soundness of the vacuum pressure is diagnosed, the voltage detector 2000 can be used to determine in advance whether or not the vacuum switch device 1 is powered. In addition to this, the soundness diagnosis of the voltage detector 2000 can be simultaneously performed by this discrimination. Thereby, an additional circuit for diagnosing the voltage detector 2000 itself is not required, or when the signal voltage is turned ON when the signal voltage is sound, and when the signal voltage is turned OFF, the inverter circuit is additionally newly provided, and the structure is not complicated or costly. Improvement can improve the reliability of the diagnosis of the vacuum pressure.
於本實施例中，開閉部100的各部位及真空壓力診斷用端子50，係藉由環氧樹脂等之絕緣物20而被模鑄為一體，且表面被施以接地電位之導電塗裝21，作業時，即使接觸該絕緣物20，也可以確保作業人員的安全性。In the present embodiment, each portion of the opening and closing portion 100 and the vacuum pressure diagnostic terminal 50 are integrally molded by an insulator 20 such as an epoxy resin, and the surface is subjected to a conductive coating of a ground potential. At the time of operation, even if the insulator 20 is contacted, the safety of the worker can be ensured.
於本實施例中，電壓檢測用耦合電容器1001及真空壓力診斷用電容器1005的一端雖被接地，但是不一定要接地，只要是比產生絕緣破壞之情形中的端子50更低的電位，且該電位為已知，以使電壓V2成為電壓檢測器2000的動作電壓以上之方式，來選擇端子50與金屬容器12間的靜電容量C0與真空壓力診斷用電容器1005的靜電容量C1005，且可以將電壓檢測器2000連接於連接插頭1006，能夠診斷真空壓力的健全性。In the present embodiment, one end of the voltage detecting coupling capacitor 1001 and the vacuum pressure diagnostic capacitor 1005 is grounded, but it is not necessarily grounded, as long as it is lower than the terminal 50 in the case where insulation breakdown occurs, and The potential is known, and the electrostatic capacitance C0 between the terminal 50 and the metal container 12 and the electrostatic capacitance C1005 of the vacuum pressure diagnostic capacitor 1005 are selected so that the voltage V2 becomes equal to or higher than the operating voltage of the voltage detector 2000, and the voltage can be applied. The detector 2000 is connected to the connection plug 1006 and is capable of diagnosing the soundness of the vacuum pressure.
於本實施例中，電壓檢測用電容器152及電壓檢測用耦合電容器1001、真空壓力診斷用電容器1005，雖被做成收容於框體的內部，但是，例如即使是設置於框體的外部，也可以適用本診斷手法。In the present embodiment, the voltage detecting capacitor 152, the voltage detecting coupling capacitor 1001, and the vacuum pressure detecting capacitor 1005 are housed in the casing. However, for example, even if it is provided outside the casing, This diagnostic method can be applied.
於本實施例中，連接手段雖設為連接插頭1003及1006，但是，例如即使是螺絲固定等連接插頭以外，只要個別的連接手段之構造為共通，即使不設置用以診斷電壓檢測器2000本身的額外電路，或使訊號電壓健全時成為ON、劣化時成為OFF之方式的新的反轉電路，也可以判別真空開關裝置1是否被送電，在判別電壓檢測器2000的健全性後，如進行真空壓力的健全性診斷，可以進行依據故障保安思想之診斷。In the present embodiment, the connection means is provided as the connection plugs 1003 and 1006. However, for example, even if the connection plugs such as screws are fixed, the configuration of the individual connection means is common, even if the voltage detector 2000 itself is not provided for diagnosis. The additional circuit, or a new inverting circuit that turns ON when the signal voltage is sound and turns OFF when it is degraded, can determine whether or not the vacuum switch device 1 is powered, and after determining the soundness of the voltage detector 2000, The diagnosis of the soundness of the vacuum pressure can be diagnosed based on the idea of fault security.
因此，不使構造變得複雜或提高成本之情況下，可以提高真空壓力的健全性診斷的可靠性。另外，在電壓檢測器2000具有例如對於連接插頭1003、1006可以複數插裝之端子的情形等，可以判別真空開關裝置1是否被送電，來判別電壓檢測器2000的健全性之同時，如進行真空壓力的健全性診斷，也可以進行依據故障保安思想之診斷。Therefore, the reliability of the soundness diagnosis of the vacuum pressure can be improved without complicating the structure or increasing the cost. Further, in the case where the voltage detector 2000 has, for example, a terminal in which the plugs 1003 and 1006 can be inserted in plural, it is possible to determine whether or not the vacuum switch device 1 is powered to determine the soundness of the voltage detector 2000, such as performing vacuum. The diagnosis of the soundness of the pressure can also be diagnosed based on the idea of fault security.
於本實施例中，連接有診斷手段之電壓檢測器2000之連接手段的連接插頭1003及1006，係被設置於框體2的正面面板1002，操作性及安全性雖獲得提升，但是，不限定於框體2的正面面板，只要設置於藉由診斷人員從框體2的外部可以連接電壓檢測器2000之診斷手段的位置，可以獲得同樣的效果。In the present embodiment, the connection plugs 1003 and 1006 of the connection means of the voltage detector 2000 to which the diagnostic means is connected are provided on the front panel 1002 of the casing 2, and the operability and safety are improved, but it is not limited. The same effect can be obtained by providing the front panel of the casing 2 at a position where the diagnostic means can connect the diagnostic means of the voltage detector 2000 from the outside of the casing 2.
於本實施例中，介由同軸配線1007及1004，連接插頭1003與真空壓力診斷用電容器1005連接、連接插頭1006與電壓檢測用耦合電容器1001連接，配線間距離在配線上的任意位置為相等，其結果，產生於電流流通之配線彼此的靜電容量在配線上的任意位置成為相等，只藉由真空壓力診斷用電容器1005或電壓檢測用耦合電容器1001的靜電容量，可以調整施加於連接插頭1003及連接插頭1006之電壓值。In the present embodiment, the connection plug 1003 is connected to the vacuum pressure diagnostic capacitor 1005 via the coaxial wirings 1007 and 1004, and the connection plug 1006 is connected to the voltage detecting coupling capacitor 1001. The distance between the wirings is equal to any position on the wiring. As a result, the capacitance of the wirings flowing through the current is equal to any position on the wiring, and the electrostatic capacitance of the vacuum pressure diagnostic capacitor 1005 or the voltage detecting coupling capacitor 1001 can be adjusted and applied to the connection plug 1003. Connect the voltage value of the plug 1006.
於本實施例中，進行送電狀態判別及真空壓力診斷之手段的電壓檢測器2000，例如雖談到具備LED的情形，但是，在LED以外，例如蜂鳴器等，依據施加於連接插頭1003及1006之電壓，診斷人員可以辨識異常狀態者，當然都可以。In the present embodiment, the voltage detector 2000 that performs the power transmission state determination and the vacuum pressure diagnosis means that, for example, the LED is provided. However, other than the LED, for example, a buzzer or the like is applied to the connection plug 1003 and The voltage of 1006, the diagnostic personnel can identify the abnormal state, of course.
1．．．真空開關裝置1. . . Vacuum switchgear
2．．．框體2. . . framework
3．．．操作機構3. . . Operating mechanism
4．．．主線4. . . Main line
5．．．纜線5. . . Cable
12．．．金屬容器12. . . Metal container
20．．．絕緣物20. . . Insulator
21．．．導電塗裝twenty one. . . Conductive coating
50．．．端子50. . . Terminal
100．．．開閉部100. . . Opening and closing department
101、102．．．真空閥101, 102. . . Vacuum valve
110、114．．．固定電極110, 114. . . Fixed electrode
111、115、143．．．固定導體111, 115, 143. . . Fixed conductor
112、116．．．導體112, 116. . . conductor
117．．．襯套117. . . bushing
118、140．．．陶瓷筒118, 140. . . Ceramic cylinder
119．．．電弧遮蔽件119. . . Arc shield
120、121、146．．．可動電極120, 121, 146. . . Movable electrode
122、123、144．．．可動導體122, 123, 144. . . Movable conductor
124、149．．．連結導體124, 149. . . Connecting conductor
125．．．陶瓷桿125. . . Ceramic rod
126．．．操作桿126. . . Joystick
127、151．．．絕緣桿127, 151. . . Insulation rod
130、148．．．波紋管130, 148. . . Bellows
141、142．．．端子板141, 142. . . Terminal board
150．．．扣件150. . . Fastener
152．．．電壓檢測用電容器152. . . Voltage detecting capacitor
1001．．．電壓檢測用耦合電容器1001. . . Coupling capacitor for voltage detection
1002．．．正面面板1002. . . Front panel
1003、1006．．．連接插頭1003, 1006. . . Connection plug
1004、1007．．．同軸配線1004, 1007. . . Coaxial wiring
1005．．．真空壓力診斷用電容器1005. . . Vacuum pressure diagnostic capacitor
2000．．．電壓檢測器2000. . . Voltage detector
第1圖係表示本發明之實施例1的真空開關裝置之側剖面圖。Fig. 1 is a side sectional view showing a vacuum switchgear according to a first embodiment of the present invention.
第2圖係搭載於本發明的實施例1之真空開關裝置的開閉部之剖面圖。Fig. 2 is a cross-sectional view showing an opening and closing portion of the vacuum switchgear of the first embodiment of the present invention.
第3圖係表示本發明之真空壓力診斷方法之流程圖。Figure 3 is a flow chart showing the vacuum pressure diagnosing method of the present invention.
第4圖係表示壓力與放電開始電壓之關係的特性圖。Fig. 4 is a characteristic diagram showing the relationship between the pressure and the discharge starting voltage.
1．．．真空開關裝置1. . . Vacuum switchgear
2．．．框體2. . . framework
3．．．操作機構3. . . Operating mechanism
4．．．主線4. . . Main line
5．．．纜線5. . . Cable
50．．．端子50. . . Terminal
100．．．開閉部100. . . Opening and closing department
111、115．．．固定導體111, 115. . . Fixed conductor
112、116．．．導體112, 116. . . conductor
152．．．電壓檢測用電容器152. . . Voltage detecting capacitor
1001．．．電壓檢測用耦合電容器1001. . . Coupling capacitor for voltage detection
1002．．．正面面板1002. . . Front panel
1003、1006．．．連接插頭1003, 1006. . . Connection plug
1004、1007．．．同軸配線1004, 1007. . . Coaxial wiring
1005．．．真空壓力診斷用電容器1005. . . Vacuum pressure diagnostic capacitor
2000．．．電壓檢測器2000. . . Voltage detector
Claims (9)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008001750A JP4686555B2 (en) | 2008-01-09 | 2008-01-09 | Vacuum switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW200941531A TW200941531A (en) | 2009-10-01 |
| TWI404099B true TWI404099B (en) | 2013-08-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW97146777A TWI404099B (en) | 2008-01-09 | 2008-12-02 | Vacuum switch device and its vacuum pressure diagnosis method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2079089B1 (en) |
| JP (1) | JP4686555B2 (en) |
| CN (1) | CN101483114B (en) |
| SG (1) | SG154375A1 (en) |
| TW (1) | TWI404099B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5350317B2 (en) * | 2009-09-30 | 2013-11-27 | 株式会社日立製作所 | Vacuum switch, electrode for switch or manufacturing method of vacuum switch |
| JP4982579B2 (en) * | 2010-03-12 | 2012-07-25 | 株式会社日立製作所 | Switchgear and switchgear interlocking test method |
| TWI485736B (en) * | 2010-03-25 | 2015-05-21 | Hitachi Ltd | Vacuum switch and vacuum insulated switchgear |
| CN102280300A (en) * | 2011-05-23 | 2011-12-14 | 宏秀电气(安徽)有限公司 | Touchable high-voltage breaker |
| JP6235830B2 (en) * | 2013-08-22 | 2017-11-22 | 株式会社日立産機システム | Voltage detector and switchgear provided with the same |
| CN106356246B (en) * | 2016-11-03 | 2018-11-16 | 韩润萍 | A kind of vacuum circuit-breaker arc extinguishing chamber vacuum degree on-Line Monitor Device |
| CN110092571A (en) * | 2019-06-13 | 2019-08-06 | 新沂市骄阳石英有限公司 | A kind of quartz sand smelting furnace pressure alarm set |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200717563A (en) * | 2005-09-13 | 2007-05-01 | Hitachi Ltd | Vacuum switchgear |
| TW200737635A (en) * | 2006-01-31 | 2007-10-01 | Hitachi Ltd | Vacuum insulated switch gear |
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|---|---|---|---|---|
| JPS5132829B1 (en) * | 1969-04-11 | 1976-09-16 | ||
| JPS644203Y2 (en) * | 1981-04-22 | 1989-02-03 | ||
| JPS5933719A (en) * | 1982-08-17 | 1984-02-23 | 株式会社明電舎 | Vacuum degree monitor for vacuum breaker |
| JPS5923423A (en) * | 1982-07-30 | 1984-02-06 | 株式会社明電舎 | Vacuum degree monitor for vacuum breaker |
| JPS61263015A (en) * | 1985-05-16 | 1986-11-21 | 株式会社明電舎 | Vacuum drop detector for vacuum interrupter |
| JPH01122530A (en) * | 1987-11-06 | 1989-05-15 | Mitsubishi Electric Corp | Breaking performance deterioration predicting device for vacuum breaker |
| JPH0325714A (en) * | 1989-06-22 | 1991-02-04 | Sharp Corp | Magneto-resistance effect type thin-film magnetic head |
| JP2705266B2 (en) * | 1989-10-04 | 1998-01-28 | 富士電機株式会社 | Vacuum valve switchgear |
| JP2885233B2 (en) * | 1989-10-04 | 1999-04-19 | 富士電機株式会社 | Vacuum drop detector for vacuum valve type switchgear |
| JP3168751B2 (en) * | 1992-04-02 | 2001-05-21 | 富士電機株式会社 | Method and apparatus for detecting vacuum leak of vacuum valve |
| JPH09261813A (en) * | 1996-03-26 | 1997-10-03 | Nissin Electric Co Ltd | Gas insulated switchgear |
| JP4953415B2 (en) | 2005-09-12 | 2012-06-13 | 内山工業株式会社 | Gasket integrated molding method and component for fuel cell component |
| JP4984577B2 (en) * | 2006-03-08 | 2012-07-25 | 株式会社戸上電機製作所 | Switch with voltage detector |
-
2008
- 2008-01-09 JP JP2008001750A patent/JP4686555B2/en active Active
- 2008-12-02 TW TW97146777A patent/TWI404099B/en active
- 2008-12-08 EP EP08021300.2A patent/EP2079089B1/en not_active Not-in-force
- 2008-12-10 SG SG200809092-0A patent/SG154375A1/en unknown
-
2009
- 2009-01-08 CN CN 200910002218 patent/CN101483114B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200717563A (en) * | 2005-09-13 | 2007-05-01 | Hitachi Ltd | Vacuum switchgear |
| TW200737635A (en) * | 2006-01-31 | 2007-10-01 | Hitachi Ltd | Vacuum insulated switch gear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101483114B (en) | 2013-01-16 |
| EP2079089A2 (en) | 2009-07-15 |
| EP2079089B1 (en) | 2015-09-23 |
| TW200941531A (en) | 2009-10-01 |
| JP4686555B2 (en) | 2011-05-25 |
| SG154375A1 (en) | 2009-08-28 |
| EP2079089A3 (en) | 2010-09-01 |
| JP2009164018A (en) | 2009-07-23 |
| CN101483114A (en) | 2009-07-15 |
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