201206001 六、發明說明 【發明所屬之技術領域】 本發明係關於一種具備同時具有遮斷與斷路機能的開 閉器之開關裝置與該開關裝置的連動試驗方法。 【先前技術】 開關裝置係爲在電力的送電系統中進行電流的投入· 切離之機器，開閉器係擔當其主要電流的投入·切離者。 開關裝置之尤其是真空絕緣開關裝置係與習知的SF6氣體 絕緣開關裝置相比，完全不使用地球暖化係數顯示爲C02 的約239 00倍之高數値的SF6氣體，是環境適合型之次世 代趨勢的開關設備。 尤其是同時具備遮斷與斷路機能的3位置型開關裝置 係在可以達到機器的小型化的觀點上是有利的。其中作爲 同時具備遮斷與斷路機能的3位置型開關裝置’有例如專 利文獻1所記載者。在專利文獻1中揭示具備真空2點切 離3位置型遮斷與斷路器（CB及DS)、及保護繼電器之開 關裝置。 其中，保護繼電器係爲在負荷側檢測出過電流的情況 下對於開閉器施予遮斷指令，達到遮斷過電流的任務者’ 在具備保護繼電器之開關裝置中’必須進行定期試驗保護 繼電器與遮斷器爲正常連動，根據來自保護繼電器的指令 可以使遮斷器遮斷動作的連動試驗。 [先前技術文獻] -5- 201206001 [專利文獻] [專利文獻1]曰本特開2008 - 1 043 38號公報 【發明內容】 (發明槪要） (發明所欲解決之課題） 但是，專利文獻1所記載之真空2點切離3位置型遮 斷與斷路器係在一個開閉器具有遮斷機能與斷路機能，在 進行保護繼電器與3位置型遮斷與斷路器之連動試驗時， 儘管保護繼電器僅能施予遮斷指令，因爲3位置型遮斷與 斷路器究竟是以位於遮斷位置作爲出發位置，因此對於保 護繼電器的指令3位置型遮斷與斷路器是否正常運行遮斷 動作無法另外進行連動試驗。 因此，在本發明中係以提供能夠進行同時具備遮斷斷 路機能之3位置型開閉器、與保護繼電器的連動試驗之開 關設備作爲第1目的。又以提供針對該開關裝置之同時具 備遮斷斷路機能之3位置型開閉器、與保護繼電器的連動 試驗方法作爲第2目的。 (解決課題之手段） 爲了實現第1目的，關於本發明之開關裝置，其特徵 爲具備：具備遮斷•斷路機能之3位置型開閉器、對於前 述開閉器施予遮斷及斷路指令之保護繼電器、可切換來自 該保護繼電器之指令成爲遮斷指令情況與成爲斷路指令情 -6 - 201206001 況之切換裝置、將電力供給至前述開閉器之母線、及由前 述開閉器供給電力至負荷側之電線。 又爲了實現第2目的’在關於本發明之開關裝置的連 動性試驗方法中’其係爲對於具備··具備遮斷.斷路機能 之3位置型開閉器、對於前述開閉器施予遮斷或斷路指令 之保護繼電器、將電力供給至前述開閉器之母線、由前述 開閉器供給電力至負荷側之電線、及可切換來自該保護繼 電器之指令成爲遮斷指令情況與成爲斷路指令情況之切換 裝置的開關設備之前述保護繼電器與前述3位置型開閉器 的連動性試驗方法，其特徵爲：在將前述3位置型開閉器 從投入狀態成爲遮斷後，切換前述切換裝置使來自前述保 護繼電器的指令成爲斷路指令，在根據前述切換裝置的切 換後’藉由根據來自前述保護繼電器的指令使前述3位置 型開閉器斷路，試驗前述開關設備中之前述保護繼電器與 前述3位置型開閉器的連動性。 (發明之效果） 藉由達成第1目的，可以提供一種能夠進行同時具有 遮斷斷路機能的開閉器、與保護繼電路的連動試驗之開關 裝置。 又藉由達成第2目的，可以進行.對於開關裝置之同時 具有遮斷斷路機能的3位置型之開閉器、與保護繼電路的 連動試驗。 201206001 【實施方式】 (用以實施發明之形態） 在以下說明本發明之實施例。 (贲施例1 ) 針對本實施例，使用第1至3圖加以說明。關於本實 施例之開關裝置1 〇〇係由具備遮斷斷路機能的真空2點切 離3位置型開閉器1、將電力供給至該真空2點切離3位 置型開閉器1的母線1 〇 1、從真空2點切離3位置型開閉 器1朝負荷側供給電力之電線102、真空接地開閉器 1 04、用以進行真空2點切離3位置型開閉器1與真空接 地開閉器1 04的開閉之提供操作力的操作器1 03、在緊急 時對於真空2點切離3位置型開閉器1施予遮斷指令的保 護繼電器2、及控制基板10槪略構成。 真空2點切離3位置型開閉器1係由內部成爲真空的 真空容器114、2對相互對向的可動電極105與固定電極 106、與可動電極105連接的可動導體112、與固定電極 106連接的固定導體113、連接2個可動導體112彼此之 連接導體1〇7、遮蔽開閉時的電弧之電弧遮罩、使可動導 體112可以在保持真空容器114的真空之狀態動作之伸縮 體主要構成。 真空接地開閉器104係由內部成爲真空的真空容器 124、對向的可動電極11〇及固定電極11〗、與可動電極 110連接的可動導體122、與固定電極ill連接的固定導 -8- 201206001 體123、遮蔽開閉時電弧的電弧遮罩、及使可動導體122 可以在保持真空容器1 24的真空之狀態下動作之伸縮體構 成。藉由投入真空接地開閉器1 04，可以將開關裝置1 00 內成爲接地電位。 再者真空2點切離3位置型開閉器1及真空接地開閉 器1 04係利用固體絕緣物而一體模塑。又在真空2點切離 3位置型開閉器1的負荷側設置檢測在負荷側流通的電流 之變流器1 20，在負荷側流通過電流的情況下可以利用變 流器120檢測出來。 使用第2、3圖，針對施予遮斷·斷路指令的電路構 成加以說明。在開關裝置1 00中具備：設置在開關裝置 100的盤面外側，施予利用通常時使用之按鈕的遮斷·斷 路指令之發訊手段5;及在負荷側發生過電流等的緊急時 使用，對於真空2點切離3位置型開閉器1可以傳送遮斷 指令之保護繼電器2。發訊手段5係可以將指令傳送到投 入—遮斷線圏7、遮斷—斷路線圏8、及投入線圈9，形 成能夠進行投入·遮斷·斷路動作。在通常時，藉由根據 該按鈕之發訊手段5進行真空2點切離3位置型開閉器1 的操作。 除此之外，在本實施例之開關裝置1 00中，形成可以 從保護繼電器2傳送指令到遮斷-> 斷路線p 8的電路，而 且在制控基板1 〇內也具備將來自保護繼電器2的指令切 換爲傳到投入—遮斷線圈7的電路與傳達到遮斷—斷路線 圈8的電路之電路切換裝置6。換言之，在該例的情況 -9 - 201206001 下，來自保護繼電器2的指令係因爲在切換前使開閉器i 位於投入狀態的情況而被傳送到投入—遮斷線圈7，因此 只使投入—遮斷線圈7應答成爲遮斷指令，在切換後使開 閉器1位於遮斷狀態的情況係因爲只被傳送到遮斷—斷路 線圈8，因此成爲斷路指令。又上述之保護繼電器2及發 訊手段5係輸出相同的電氣訊號。 開關裝置100係藉由使投入—遮斷線圈7接受來自保 護繼電器2或是發訊手段5的指令，以真空2點切離3位 置型的開閉器1從投入位置移動到遮斷位置的方式使操作 器103動作》換言之，投入—遮斷線圈7係作爲接受遮斷 指令之受遮斷指令手段加以動作。又藉由使遮斷—斷路線 圈8接受來自保護繼電器2或是發訊手段5的指令，以真 空2點切離3位置型的開閉器1從遮斷位置移動到斷路位 置的方式使操作器103動作。換言之，遮斷—斷路線圈8 係作爲接受斷路指令之受斷路指令手段加以動作。再者投 入—遮斷線圈7及遮斷—斷路線圈8係對於相同指令應 答，藉此使操作器103開始遮斷或斷路動作。其中，遮斷 —斷路線圈8係成爲只有在真空2點切離3位置型開閉器 1位於斷路位置的情況才應答。藉此，在儘管開閉器不是 位於遮斷位置誤傳指令的情況下防止發生錯誤動作。 當針對保護繼電器2與真空2點切離3位置型開閉器 1的連動重要性加以說明時，在保護繼電器2與真空2點 切離3位置型開閉器1爲正常連動的情況，在系統中例如 於事故時流通過電流時，使設置在負荷側之變流器丨20檢 -10- 201206001 測出過電流，將流通過電流乙事傳達到保護繼電器2。接 受該傳達保護繼電器2係送出指令’根據來自該保護繼電 器2的指令，可以使真空2點切離3位置型開閉器1遮 斷，防止在負荷側流通過電流。一方面’在保護繼電器2 與真空2點切離3位置型開閉器1的連動性產生異常的情 況，無法防止在負荷側流通過電流’欠缺與負荷側連接之 機器的適當保護。因此’針對保護繼電器2與真空2點切 離3位置型開閉器1的連動性是否正常必須定期確認。 在此，針對保護繼電器2與真空2點切離3位置型開 閉器1之連動性試驗的順序加以說明。在連動性試驗的開 始前，位於通常的通電狀態，形成來自保護繼電路2的指 令之電氣訊號係被傳達到投入—遮斷線圈7，當在該狀態 中流通過電流時，來自保護繼電路2的指令之電氣訊號係 被傳達到投入—遮斷線圏7，形成使投入—遮斷線圈7應 答，並藉由使操作器1 03動作而進行遮斷動作。在連動性 試驗中，首先將真空2點切離3位置型開閉器1移動到遮 斷位置，遮斷電流。此時的遮斷指令不是由保護繼電器2 所送出的，而是藉由來自根據按鈕的發訊手段5之通常的 遮斷指令加以進行。其次，利用電路切換裝置6，以來自 保護繼電路2的電氣訊號被傳達到真空2點切離3位置型 開閉器1的遮斷—斷路線圈8之方式切換電路。在切換電 路後，將來自保護繼電路2的指令傳達到遮斷—斷路線圈 8，使真空2點切離3位置型開閉器1從遮斷位置移動到 斷路位置。 -11 - 201206001 針對根據上述連動性試驗可以確認的內容加以說明。 首先，藉由施予根據通常時使用之按鈕的遮斷·斷路指令 之發訊手段5 ’使真空2點切離3位置型開閉器1移動到 遮斷位置，遮斷電流。藉此，可以確認投入θ遮斷線圏7 爲能夠正常接受來自發訊手段5的指令，及接受該指令使 操作器1 03能夠正常進行遮斷動作。然而該試驗係爲根據 通常的遮斷指令者，在該試驗中則無法進行對於從保護繼 電器2是否能夠傳送正常的指令之確認。 因此在本實施例中，進一步在根據電路切換裝置6的 電路切換後，將來自保護繼電器2的指令傳達到遮斷—斷 路線圈8，使真空2點切離3位置型開閉器1從遮斷位置 移動到斷路位置。根據該試驗，可以確認從保護繼電器2 能夠將正常的指令傳送到遮斷—斷路線圈8，及接受該指 令使操作器103可以正常進行斷路動作。 根據最初之遮斷動作的試驗，可以確認投入—遮斷線 圈7爲能夠正常接受來自發訊手段5的指令，及接受該指 令使操作器1 03能夠正常進行遮斷動作，根據最後之基於 保護繼電器2的動作之斷路動作的試驗，可以確認保護繼 電器2爲對於遮斷—斷路線圈8傳送正常的指令，及接受 該指令使操作器1 03能夠正常進行斷路動作。在此，如上 述所示，保護繼電器2與發訊手段5係輸出相同的電氣訊 號’進一步投入—遮斷線圏7與遮斷-斷路線圈8係爲對 於相同指令應答者。藉由加上該條件，保證保護繼電器2 對於投入-遮斷線圈7也能夠傳送正常的指令，進一步使 -12- 201206001 投入—遮斷線圈7接受該指令而使操作器103正常進行遮 斷動作。 藉由如上述所示的構成，針對具備具有遮斷斷路機能 之3位置型開閉器的開關裝置，根據採取上述順序可以進 行保護繼電器2與3位置型開閉器的連動性試驗。 又在本實施例中，雖然進一步以2點切離的開閉器作 爲一例加以說明，但是當然是不限於2點切離者。 又針對開閉器也是以真空絕緣或是固體絕緣作爲一例 加以說明，但是即使是例如氣中絕緣或氣體絕緣，進一步 是組合該等與真空絕緣或固體絕緣的開閉器也都適用。 又在本實施例中，針對保護繼電器2與發訊手段5係 輸出相同的電氣訊號，再者投入—遮斷線圈7與遮斷—斷 路線圈8係對於相同指令進行應答的情況加以說明，但是 不一定必須同一或相同，對於保護繼電器2及發訊手段5 的任一個訊號，也都可以使投入—遮斷線圈7與遮斷->斷 路線圈8的任一個應答者爲佳。又不限於電氣訊號，當然 例如光通訊等其他種類的訊號亦可。如本實施例說明所示 在成爲同一或相同的情況下，因爲投入—遮斷線圈7與遮 斷—斷路線圈8係對於一個指令應答即可，因此不必將應 答所必要的構成設置例如複數個，在圖謀成本減低的觀點 更爲有利。 【圖式簡單說明】 第1圖係爲用以說明關於實施例1之開關裝置的整體 -13- 201206001 構成之側剖面圖。 第2圖係爲針對將電力從母線供給到負荷之開關裝置 的機能，爲了說明實施例而簡略化的電路圖。 第3圖係爲爲了說明關於實施例1之連動試驗的順序 而簡略化的電路圖。 【主要元件符號說明】 1 :開閉器 2 :保護繼電器 5 :發訊手段 6 :電路切換裝置 7 :投入—遮斷線圈 8 :遮斷—斷路線圈 9 :投入線圏 1 〇 :控制基板 100 :開關裝置 1 〇 1 :母線 1 〇 2 :電線 103 :操作器 1〇4 :真空接地開閉器 1 05、1 1 〇 :可動電極 1 06、1 1 1 :固定電極 107 :連接導體 108 :母線側導體 -14- 201206001 109 :負荷側導體 112、122:可動導體 1 1 3、1 23 :固定導體 1 14、124 :真空容器 120 :變流器201206001 SUMMARY OF THE INVENTION [Technical Field] The present invention relates to a linkage test method for a switch device having a shutter having both a shut-off and a break function and the switch device. [Prior Art] The switch device is a device that inputs and cuts off current in a power transmission system, and the switcher is responsible for inputting and cutting off the main current. In particular, the vacuum insulated switchgear of the switchgear is not suitable for the SF6 gas with a global warming coefficient of about 239 00 times higher than that of the conventional SF6 gas-insulated switchgear, and is environmentally suitable. Switching devices for the next generation trend. In particular, a three-position type switching device having both a blocking and a breaking function is advantageous in that it can achieve miniaturization of the machine. Among them, a three-position type switching device having both a blocking and a breaking function is described, for example, in Patent Document 1. Patent Document 1 discloses a switching device including a vacuum two-point disconnection three-position type blocking and circuit breaker (CB and DS) and a protective relay. In the protection relay, when the overcurrent is detected on the load side, the shutter is given an interrupt command, and the task of interrupting the overcurrent is performed. 'In the switch device with the protection relay, the periodic test protection relay must be performed. The interrupter is normally interlocked, and the interlocking test of the interrupter can be interrupted according to an instruction from the protection relay. [Prior Art Document] -5-201206001 [Patent Document 1] [Patent Document 1] JP-A-2008- 1 043 38 (Summary of the Invention) (Problems to be Solved by the Invention) However, Patent Literature The vacuum 2-point cut-off 3-position type interrupting and circuit breaker described in 1 has the function of breaking and breaking in one opener, and the protection relay and the 3-position type blocking and the circuit breaker are tested, although the protection The relay can only apply the blocking command. Because the 3-position type blocking and the circuit breaker are located at the blocking position as the starting position, the positional blocking of the protection relay and the interruption of the circuit breaker cannot be performed normally. In addition, a linkage test was conducted. Therefore, in the present invention, it is a first object to provide a switching device capable of performing a interlocking test of a three-position type switch having a shut-off function and a protective relay. Further, it is a second object to provide a three-position type switch having a shutdown function for the switch device and a joint test method for the protection relay. (Means for Solving the Problem) In order to achieve the first object, a switch device according to the present invention is characterized in that it includes a three-position type switch having a shut-off/break function, and is provided with protection against interruption and disconnection of the switch. The relay, the command to switch from the protection relay, the switching command, the switching device that is the disconnection command -6 - 201206001, the bus that supplies power to the switch, and the power supplied from the switch to the load side wire. In order to achieve the second object, in the method for testing the interlocking performance of the switch device according to the present invention, it is a three-position type switch having a shut-off function and a circuit breaker, and the shutter is blocked or a protection relay for a disconnection command, a bus bar for supplying electric power to the switch, a wire for supplying electric power to the load side by the switch, and a switching device capable of switching a command from the protection relay to a blocking command and a disconnection command In the method of testing the interlocking performance of the above-described three-position type switch, the switching device is switched from the input state to the interrupted state, and the switching device is switched to execute the command from the protective relay. When the switching command is turned on, the third-position type switch is disconnected by the command from the protective relay, and the interlocking force between the protective relay and the three-position type opener in the switching device is tested. . (Effect of the Invention) By achieving the first object, it is possible to provide a switching device capable of performing a joint test of a shutter having a function of interrupting a circuit and a circuit breaker. Further, by achieving the second object, it is possible to carry out a joint test of a three-position type switch having a shutdown function and a protection circuit for the switching device. [2012] [Embodiment] (Mode for carrying out the invention) Hereinafter, an embodiment of the present invention will be described. (Example 1) This embodiment will be described using Figs. 1 to 3. The switch device 1 of the present embodiment is a two-position cut-off device that has a vacuum cut-off function at a two-point cut-off function, and supplies power to the vacuum busbar 2 to cut off the bus bar 1 of the three-position type switch 1 1. From the vacuum point 2, the 3-position type switch 1 supplies the electric power line 102 to the load side, the vacuum grounding switch 104, and the vacuum 2-point cutting-off 3-position type opener 1 and the vacuum grounding switch 1 The operator 103 that provides the operating force for the opening and closing of the 04, and the protective relay 2 that applies the blocking command to the three-position type opener 1 at the vacuum two-point opening in an emergency, and the control board 10 are roughly configured. The two-position vacuum cut-off device of the three-position type is connected to the movable electrode 105 and the fixed electrode 106 which are opposed to each other, the movable conductor 112 connected to the movable electrode 105, and the fixed electrode 106 by the vacuum containers 114 and 2 which are vacuumed inside. The fixed conductor 113, the connecting conductor 1〇7 that connects the two movable conductors 112, the arc mask that shields the arc during opening and closing, and the expandable body that allows the movable conductor 112 to operate in a state in which the vacuum of the vacuum vessel 114 is maintained is mainly configured. The vacuum grounding switch 104 is a vacuum container 124 that is internally vacuumed, a movable electrode 11 对 and a fixed electrode 11 that are opposed to each other, a movable conductor 122 that is connected to the movable electrode 110, and a fixed conductor that is connected to the fixed electrode ill -8 - 201206001 The body 123 is configured to shield the arc of the arc during opening and closing and the expandable body that allows the movable conductor 122 to operate while maintaining the vacuum of the vacuum container 146. By putting the vacuum grounding switch 104, the inside of the switching device 100 can be set to the ground potential. Further, the vacuum is cut at two points from the three-position type shutter 1 and the vacuum grounded switch unit 104 is integrally molded by using a solid insulator. Further, a current transformer 1 20 for detecting a current flowing on the load side is provided on the load side of the three-position type opener 1 at a vacuum of two o'clock. When a current flows through the load side, the current can be detected by the inverter 120. The circuit configuration for applying the blocking/breaking command will be described using Figs. 2 and 3. The switching device 100 includes a signaling means 5 that is provided outside the disk surface of the switching device 100, and that is provided with a blocking/breaking command by a button that is normally used, and an emergency that causes an overcurrent or the like on the load side. The protective relay 2 for transmitting the blocking command can be transmitted to the vacuum 2-point cutting type 3-position type shutter 1 . The signaling means 5 can transmit commands to the injection-interruption line 圏7, the escaping-breaking path 圏8, and the input coil 9, forming an input, interruption, and disconnection operation. In the normal state, the operation of the three-position type shutter 1 is performed by vacuum two-point cutting by the signaling means 5 of the button. In addition, in the switching device 100 of the present embodiment, a circuit that can transmit a command from the protective relay 2 to the blocking-> disconnecting route p8 is formed, and also has protection from the protection substrate 1 The command of the relay 2 is switched to the circuit switching device 6 that transmits the circuit to the input-breaking coil 7 and the circuit that is transmitted to the blocking-breaking coil 8. In other words, in the case of this example -9 - 201206001, the command from the protective relay 2 is transmitted to the input-interrupting coil 7 because the shutter i is placed in the input state before switching, so only the input is made - The escaping coil 7 responds as a blocking command, and the shutter 1 is placed in the occlusion state after switching because it is only transmitted to the escaping-breaking coil 8, and thus becomes a disconnection command. Further, the protection relay 2 and the transmission means 5 described above output the same electrical signal. The switch device 100 receives the command from the protection relay 2 or the signaling means 5 by the input-interrupting coil 7, and moves the three-position type opener 1 from the input position to the blocking position by vacuuming at 2 o'clock. The mode causes the operator 103 to operate. In other words, the input-blocking coil 7 operates as a blocked command means for receiving a blocking command. Further, by causing the blocking/breaking coil 8 to receive an instruction from the protective relay 2 or the signaling means 5, the operation is performed by moving the two-position type opener 1 from the blocking position to the disconnecting position at a vacuum of 2 o'clock. The device 103 operates. In other words, the blocking-breaking coil 8 operates as a disconnection command means for receiving a disconnection command. Further, the injection-breaking coil 7 and the breaking-breaking coil 8 are answered by the same command, whereby the operator 103 starts the interruption or the breaking operation. Among them, the blocking-breaking coil 8 is responsive only when the three-position type opener 1 is located at the disconnection position at the vacuum of 2 o'clock. Thereby, an erroneous operation is prevented from occurring even if the shutter is not located at the occlusion position. When the importance of the interlocking of the protection relay 2 and the vacuum 2-point cut-off 3-position type shutter 1 is explained, the protection relay 2 and the vacuum 2 point are separated from the 3-position type shutter 1 in a normal interlocking state, in the system. For example, when a current flows through an accident, the current transformer 丨20 is set to -10-201206001 to detect an overcurrent, and the current is transmitted to the protection relay 2 through the current. In response to the command from the protective relay 2, the transmission protection relay 2 can be shut off from the three-position type opener 1 to prevent the current from flowing through the load side. On the other hand, in the case where the interlocking force between the protective relay 2 and the vacuum two-point switch is separated from the three-position type opener 1, an abnormality in the flow side of the load side cannot be prevented, and the proper connection of the machine connected to the load side cannot be prevented. Therefore, it is necessary to check periodically whether the interlocking of the protective relay 2 and the vacuum two-point disconnection of the three-position type opener 1 is normal. Here, the procedure of the interlocking test of the protective relay 2 and the two-point vacuum cut-off of the three-position type opener 1 will be described. Before the start of the linkage test, in the normal energized state, the electrical signal forming the command from the protection relay circuit 2 is transmitted to the input-interruption coil 7, and when the current flows through the state, the protection is continued. The electric signal of the command of the circuit 2 is transmitted to the input-breaking line ,7, and the input-interrupting coil 7 is made to respond, and the operator 103 is operated to perform the blocking operation. In the interlocking test, the vacuum 2 point cut-off from the 3-position type shutter 1 is first moved to the blocking position to interrupt the current. The interrupt command at this time is not sent by the protection relay 2, but is performed by a normal interrupt command from the signaling means 5 according to the button. Next, the circuit switching means 6 is used to switch the circuit so that the electric signal from the protection relay circuit 2 is transmitted to the cut-off coil 8 of the three-position type opener 1 at a vacuum of two points. After the switching circuit, the command from the protection relay circuit 2 is transmitted to the breaking-breaking coil 8, and the vacuum 2 point is cut away from the three-position type shutter 1 from the blocking position to the breaking position. -11 - 201206001 Explain what can be confirmed based on the above-mentioned linkage test. First, the three-point vacuum cut-off device 1 is moved to the blocking position by the signaling means 5' of the blocking/breaking command of the button normally used, and the current is interrupted. Thereby, it can be confirmed that the input θ escaping line 圏 7 is a command capable of normally receiving the signal from the transmitting means 5, and the command is received to enable the operator 308 to perform the blocking operation normally. However, the test is based on a normal interrupting command, and in this test, confirmation as to whether or not the normal relay 2 can be transmitted from the protective relay 2 cannot be performed. Therefore, in the present embodiment, after the circuit switching according to the circuit switching device 6, the command from the protection relay 2 is further transmitted to the blocking-breaking coil 8, so that the vacuum 2 points are cut away from the 3-position type opener 1 from the cover. The broken position moves to the open position. According to this test, it can be confirmed that the normal relay command can be transmitted from the protective relay 2 to the shutoff-breaking coil 8, and the command can be received so that the operator 103 can normally perform the disconnecting operation. According to the test of the first interruption operation, it can be confirmed that the input-interruption coil 7 is capable of normally receiving the command from the signaling means 5, and receiving the command enables the operator 103 to perform the interruption operation normally, based on the final basis. In the test of the breaking operation of the operation of the protective relay 2, it can be confirmed that the protective relay 2 transmits a normal command to the blocking-breaking coil 8, and the command is received to enable the operator 103 to perform the disconnecting operation normally. Here, as described above, the protection relay 2 and the signaling means 5 output the same electrical signal 'further input-breaking line 7 and the blocking-breaking coil 8 are responders to the same command. By adding this condition, it is ensured that the protective relay 2 can also transmit a normal command to the input-interrupting coil 7, and further puts -12-201206001 into the escaping coil 7 to receive the command to cause the operator 103 to normally cover. Broken action. According to the configuration described above, the switching device including the three-position type switch having the breaking function can perform the compatibility test between the protective relay 2 and the three-position type opener in accordance with the above procedure. Further, in the present embodiment, the shutter which is further cut at two points is taken as an example, but it is of course not limited to the two-point cutter. Further, the shutter is also described as an example of vacuum insulation or solid insulation. However, even if it is, for example, gas-insulated or gas-insulated, it is also suitable to use such a vacuum-insulated or solid-insulated switch. Further, in the present embodiment, the protection relay 2 and the signaling means 5 output the same electric signal, and the input-breaking coil 7 and the blocking-breaking coil 8 are responsive to the same command. However, it is not necessarily necessary to be the same or the same. For any of the protection relay 2 and the signaling means 5, any one of the input-interrupting coil 7 and the blocking-> breaking coil 8 can be made. good. It is not limited to electrical signals. Of course, other types of signals such as optical communication are also available. In the case where the same or the same is shown in the description of the embodiment, since the input-interrupting coil 7 and the blocking-breaking coil 8 are responsive to one command, it is not necessary to set the configuration necessary for the response, for example. In the plural, it is more advantageous to reduce the cost of plotting. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side cross-sectional view showing the configuration of the entire switch device of the first embodiment -13-201206001. Fig. 2 is a circuit diagram for simplifying the description of the embodiment with respect to the function of the switching device for supplying electric power from the bus bar to the load. Fig. 3 is a circuit diagram for simplifying the sequence of the interlocking test of the first embodiment. [Description of main component symbols] 1 : Switch 2 : Protection relay 5 : Signaling means 6 : Circuit switching device 7 : Input - Interrupting coil 8 : Interrupting - Breaking coil 9 : Input wire 圏 1 〇: Control board 100: Switching device 1 〇1: Busbar 1 〇2: Wire 103: Operator 1〇4: Vacuum grounding switch 1 05, 1 1 〇: movable electrode 1 06, 1 1 1 : fixed electrode 107: connecting conductor 108: Busbar side conductor-14- 201206001 109: Load side conductors 112, 122: movable conductor 1 1 3, 1 23 : fixed conductor 1 14 , 124 : vacuum vessel 120 : converter