JP5124609B2 - Switchgear - Google Patents

Description

  The present invention relates to a switchgear that can perform current disconnection and grounding.

  A switchgear is a device that receives current from the bus side and supplies it to the load side, and is equipped with a circuit breaker, disconnector and grounding switch to turn on, interrupt, disconnect, or It enables grounding of current during inspection.

  However, when the main circuit is not disconnected, that is, when the current of the main circuit is turned on or when the current itself is cut off, but the voltage is generated on the load side, the ground switch is turned on. If this happens, a ground fault will occur where the bus side is grounded. Also, if the disconnect switch is turned on when the ground switch is turned on, a ground fault will occur. Therefore, when the switchgear is not disconnected, it is necessary to prevent the switching operation of the ground switch, or when the ground switch is in the switching state, it is necessary to prevent the switching switch from being switched on. .

  As a conventional technique for preventing the switching operation of the earthing switch when the switchgear described above is not disconnected, and further preventing the switching operation of the disconnecting switch when the grounding switch is in the on state, for example, Patent Literature 1 is described. In Patent Document 1, in a state where the ground disconnector is inserted, the lock plate protrudes forward from the surface of the mounting plate, and the handle for inserting the disconnector is attached clockwise by the lock plate. The lever and shutter, which are unable to swing, are disabled by the shutter, so that the disconnector can be prevented from being inserted. When the disconnector is inserted, the locking plate protrudes forward from the surface of the mounting plate, A metal closed type switchgear is disclosed in which the handle for turning on the disconnecting switch cannot be mounted with a shutter that cannot be swung clockwise by the locking plate, and the grounding disconnecting switch can be prevented from being inserted. (Patent Document 1, paragraphs [0060] to [0062]).

JP-A-9-154208

  However, the switch gear described in Patent Document 1 has a complicated link mechanism, and it is more desirable that the switch gear be realized with a simplified configuration in consideration of maintainability and cost.

  Therefore, in the present invention, with the simplified configuration, when the ground switch is not disconnected, the closing operation of the ground switch is prevented, or when the ground switch is in the closed state, the disconnecting switch is prevented from being switched on. A first object is to provide a switchgear that can be used.

In order to solve the first problem, a switchgear according to the present invention is a switchgear comprising at least a switch having a disconnect function and a ground switch for grounding a load side of a main circuit, wherein the ground switch The switch includes an operation unit covered by a sliding type covering part, the switch gear further includes a slide preventing part for preventing the covering part from sliding, and the slide preventing part is disconnected from the switch. When it is in the position, it is released, the covering portion can be slid, the operation portion can be operated , and the slide prevention portion is provided in the switch .

  According to the switchgear that achieves the first object of the present invention, the simplified structure prevents the operation of the earthing switch from being turned on when it is not disconnected, or the earthing switch is brought into the on state. In some cases, the disconnecting device can be prevented from being turned on.

It is a sectional side view of a switchgear. It is a figure for demonstrating a disconnection operation device and a grounding operation device. It is a figure for demonstrating the interlock mechanism by a door. It is a figure explaining the mutual interlock of an interruption | blocking operation device and a grounding operation device, and is a figure showing the case where it exists in a disconnecting position and a grounding position. It is a figure explaining the mutual interlock of an interruption | blocking operation device and a grounding operation device, and is a figure showing the case where it exists in a non-disconnection position and a non-grounding position. It is a top view of a grounding operating device and a disconnection operating device, and is a figure for demonstrating an electrical interlock. It is a figure which shows a grounding operation mechanism. It is a figure which shows the stopper mechanism of a disconnection operating device.

  Examples of the present invention will be described below.

  A first embodiment will be described with reference to FIGS. As shown in FIG. 1, the switchgear 1 according to the present invention can switch between three positions of closing / breaking / disconnection in a vacuum insulated state, and includes a main circuit having two electrodes arranged in a two-point configuration. A two-point three-position type switch 2, a grounding switch 5 connected to the load side of the vacuum two-point three-position type switch 2 and grounding the load side of the main circuit, and a two-point vacuum 3 It is schematically configured by a bus 3 for supplying power to the position type switch 2 and a cable 4 for supplying power from the vacuum two-point cut three position type switch 2 to the load side.

  The vacuum double-break three-position type switch 2 includes a shut-off operating device 6 for switching the closing / shut-off position to each other and a disconnecting device 7 for switching the shut-off / shut-off position to each other. As shown in FIG. 2, the disconnecting operation device 7 is provided with an interlock lever 11, which is rotatably fixed to a lever rotating shaft 21 at the center of the lever. As shown in FIGS. 2 and 3, it is supported by a lever support portion 22 fixed to the main body of the disconnection operating device 7. One end of the interlock lever 11 is connected to an upper rod 23 protruding upward from the disconnection controller 7, and when the main circuit is in the disconnection position, the upper rod 23 is disconnected as shown in FIG. 4. When the main circuit is in the non-disconnection position, it can be moved up and down so that it can be positioned in a direction protruding upward from the disconnect operation device 7 as shown in FIG. As described above, the interlock lever 11 is rotatably fixed to the lever rotating shaft 21 at the center of the lever, and one end thereof is connected to the upper rod 23, so that the upper rod 23 is in the main circuit closing / breaking disconnection position. As shown in FIG. 5, when the main circuit is in the non-disconnection position, as shown in FIG. 5, the main circuit is in the disconnection position. In the same way, the lever rotates about the lever rotation shaft 21. A voltage detector 16 is installed on the load side in the vacuum two-point three-position type switch 2. The voltage detector 16 can detect the voltage on the load side of the main circuit. .

  Further, the ground switch 5 is provided with a grounding operation unit 24 for switching the closing / cutting-off state as shown in FIG. 1, and the operation of the grounding switch 5 is performed on the front surface of the grounding operation unit 24 as shown in FIG. This is done by operating the operation unit 25 provided in the unit. And the door 10 has covered this front-surface part so that it may not operate the operation part 25 accidentally and a ground fault will arise. The door 10 is provided with a rail so that it can slide. To operate the grounding operation unit 24, it is necessary to open the door 10 and operate the operation unit 25. The operation portion 25 is a handle insertion hole, and the handle is inserted into the insertion hole with the door 10 opened, and the grounding operation device 24 is operated. The door 10 is provided with a return spring 13 fixed to the panel so that the door 10 does not continue to open even if the door 10 is accidentally opened, and an elastic force in the closing direction when the door 10 slides open. Works on the door 10. As shown in FIG. 2, the door 10 in this embodiment has an overhanging portion 26 with a protruding end inside the switch gear 1, and the interlock when the main circuit is in the on / off position when the door 10 slides. The lever 11 and the overhanging portion 26 are in contact with each other, and the sliding of the door 10 is prevented. As shown in FIG. 6, the door 10 is provided with a pressing portion 14 that is a convex portion toward the inside. The switch gear 1 is pressed by the pressing portion 14 when the door 10 slides, and the vacuum 2 A turning-on / shut-off operation stop mechanism 15 for sending a command for disabling the breaker 3-position type switch 2 is provided. Further, the door 10 is provided with a through hole 17, which is provided inside the switch gear 1 so that a solenoid lock switch 18 that operates based on the detection result of the voltage detector 16 can pass through the through hole 17. ing. Moreover, the interlock pin 12 protrudes from the grounding operation device 24 to the interlock lever 11 side of the vacuum two-point cut three-position type switch 2 described above, and the ground switch 5 is inserted as shown in FIG. When interlocked, the interlock pin 12 moves to the lower left, and as shown in FIG. 5, the interlock pin 12 moves to the upper right when in the cut state. The interlock pin 12 can move to the lower left only when the interlock lever 11 is on the upper side. Conversely, the interlock lever 11 itself can move in the horizontal direction only when the interlock pin 12 is on the upper right. That is, the interlock lever 11 and the interlock pin 12 have an interlock function that works with each other. As shown in FIG. 7, the operating rod 27 that is driven when operated by the grounding operation unit 24 is provided with an indicator fitting 20, and when the grounding switch 5 is in the closing position, a vacuum 2-point 3-position type is provided. By operating the on / off prevention switch 19 that prevents the switch 2 from being turned on or off, the main circuit switch is prevented from being turned on or moved to the off position.

  The operation by each operation device will be described. The breaker 6 is a switch that provides the operating force in the disconnection operation ⇒ disconnection operation to the vacuum 2-point 3-position type switch 2 and has the operation force to disconnect the electrode at once from the input position to the disconnection position. ing. However, when moving from the closing position to the disconnecting position without stopping at the interrupting position, there is a possibility that the current is not interrupted and the disconnecting position is reached. Therefore, the stopper 9 which is a fixing member provided in the disconnecting operation device 7 stops the distance between the electrodes at the interrupting position so that it does not open from the closing position to the disconnecting position at once without stopping at the interrupting position, Make sure to cut off the current. During the operation to the disconnection ⇒ disconnection position, if the stopper 9 is rotated and released, it moves to the disconnection position by the operating force of the interrupting operation device 6. At this time, the interlock lever 11 rotates upward in conjunction with the movement of the stopper 9. The rotation operation of the stopper 9 is shown in FIG.

  On the other hand, the operation from the disconnection to the disconnection position is performed by the operating force of the disconnection controller 7. Specifically, since the shut-off operating device 6 exerts an operating force in the disconnecting direction, the disconnecting operating device 7 applies an operating force equal to or greater than the operating force of the shut-off operating device 6 to drive the stopper 9 to the shut-off position. And move. At this time, the interlock lever 11 rotates in a substantially horizontal direction in conjunction with the movement of the stopper 9.

  The shut-off operation is performed by the operating force of the shut-off operating device 6.

  Further, switching of the closing / opening state of the earthing switch 5 is performed by the operating force of the earthing operator 24.

  In the switchgear according to this embodiment, when the main circuit is not disconnected, a grounding switch is inserted to prevent a ground fault on the busbar side. Specific means will be described below. The reason for preventing ground faults by providing a plurality of mechanisms as described below is to cause an accident that causes a fault on the bus side in the switchgear. This is because it must not occur at any time.

  First, a mechanism for preventing the door 10 from sliding by the interlock lever 11 will be described with reference to FIGS. As described above, in order to operate the earthing switch 5, it is necessary to open the door 10 and operate the operating unit 25 provided on the front surface of the earthing switch 5. When the container 2 is in the closing / cutting position, the interlock lever 11 is directed substantially in the horizontal direction as shown in FIG. 5, and the door is closed by blocking the sliding path of the protruding portion 26 that is a part of the door 10. Ten slides can be prevented. At this time, the interlock lever 11 functions as a slide preventing portion with respect to the door 10. If the door 10 is opened when the interlock lever 11 is oriented substantially in the horizontal direction, the overhanging portion 26 hits the interlock lever 11 and is prevented from sliding, so that the door 10 cannot be opened.

  On the other hand, as shown in FIG. 4, when the vacuum two-point three-position type switch 2 is in the disconnection position, the interlock lever 11 faces upward, and the door 10 is interlocked with respect to the sliding operation. Is in a released state. In this case, the interlock lever 11 does not block the path along which the door 10 slides.

  By satisfying the above relationship, in the switchgear 1 according to the present embodiment, the operation unit 25 can be operated only when the vacuum 2-point 3-position type switch 2 is in the disconnection position, and the ground switch 5 can be input. In the present specification, such a mechanism will be referred to as a mechanical interlock.

  Next, a mechanism for preventing the door 10 from sliding by the solenoid lock switch 18 will be described. As in the case of the interlock lever 11 described above, in order to operate the ground switch 5, it is necessary to open the door 10 and operate the operation unit provided on the front surface of the ground switch 5. When positive or negative voltage 16 is detected that is not 0, the solenoid-type lock switch 18 operates to pass through the through-hole 17 provided in the door 10 to prevent the door 10 from sliding. Here, the case where the voltage detector 16 detects a positive or negative voltage other than 0 indicates that the main circuit is in the power-applied state, that is, it is not in the disconnected state. Therefore, in the switchgear 1 according to the present embodiment, the door 10 can be opened and the operation unit can be operated only when the vacuum two-point three-position type switch 2 is in the disconnected state, and the grounding switch 5 can be input. In the present specification, such a mechanism is called an electric interlock.

  The mechanical interlock and the electrical interlock described above operate by different mechanisms. That is, the mechanical interlock permits the opening of the door 10 only when the vacuum two-point cut three-position type switch 2 is in the disconnection position, so that the ground switch 5 can be operated as a result. On the other hand, the electrical interlock electrically detects whether or not the main circuit is in the power application state using the voltage detector 16, and the main circuit is not in the power application state, that is, in the disconnected state. As a result, the opening of the door 10 is permitted, and as a result, the ground switch 5 can be operated. In this way, by providing multiple interlock mechanisms that are independent of each other, even if one of them malfunctions, the other can operate, realizing a fail-safe function that can reliably prevent ground faults. Yes.

  Although the above mechanism prevents the door 10 from being opened, it ensures that the ground switch 5 can be operated only when the main circuit is in the disconnection position and in the disconnection state. In the switchgear 1 according to the third aspect, even if the door 10 is opened for some reason, a third ground due to the interlock lever 11 and the interlock pin 12 is provided so that a ground fault can be prevented. An interlock mechanism is provided. Such a mechanism will be described below.

  As described above, the interlock lever 11 faces the horizontal direction when the main circuit is not in the disconnection position. On the other hand, the interlock pin 12 moves to the lower left when the ground switch 5 is turned on. The interlock pin 12 can be moved to the lower left as long as the interlock lever 11 faces the horizontal direction. As a result, the interlock pin 12 can be moved only when the vacuum 2-point 3-position type switch 2 is disconnected. This is possible only when the three-position switch 2 is in the disconnect position. As a result, a new fail-safe function added to the above fail-safe idea works.

  Up to this point, each mechanism that prevents the earthing switch 5 from being turned on when the main circuit is not disconnected and thereby prevents a ground fault has been mentioned. However, as another form of ground fault, when the earthing switch 5 is already in the on state, the vacuum two-point three-position type switch 2 is shifted from disconnection to shut-off / on. Can also happen. Therefore, in order to prevent a ground fault accident, it is necessary to prevent the form of the ground fault accident concerned. This mechanism will be described below.

  First, the mechanism for preventing the closing / breaking operation of the vacuum 2-point 3-position type switch 2 when the ground switch 5 is turned on by the door 10 will be described. In the switchgear 1 according to the present embodiment, the door 10 in FIG. 6 is open when the grounding switch 5 is turned on. Here, the door 10 is provided with a pressing portion 14, and when the door 10 is opened, the closing / closing operation stopping mechanism 15 is pressed by the pressing portion 14. When the closing / stopping operation stop mechanism 15 is pressed by the pressing portion 14, it outputs a command for disabling the operation of the shutoff operation device 6 and the disconnection operation device 7, whereby a vacuum double-break three-position type switch is provided. 2 is inoperable. As a result, when the earthing switch 5 is turned on, that is, when the door 10 is opened, the vacuum two-point three-position type switch 2 becomes inoperable and cannot be turned on and moved to the shut-off position. Can be prevented.

  Next, an interlock mechanism using the interlock pin 12 will be described. First, as shown in FIG. 4, the interlock pin 12 faces to the lower left when the grounding switch 5 is turned on. Then, in order for the vacuum two-point three-position type switch 2 to move from the disconnection position to the on / off position, the interlock lever 11 needs to face in the horizontal direction as shown in FIG. No. 11 can move in the horizontal direction only when the interlock pin 12 is on the upper right. However, since the interlock pin 12 faces to the lower left when the ground switch 5 is turned on, the interlock lever 11 cannot move in the horizontal direction. Thus, when the grounding switch 5 is turned on, the vacuum two-point cut three-position type switch 2 cannot be moved from the disconnection position to the closing / breaking position.

  Further, a mechanism for preventing the on / off of the vacuum 2-point 3-position type switch 2 by the on / off prevention switch 19 provided on the operation rod 27 connected to the grounding operation device 24 will be described. As shown in FIG. 7, the operating rod 27 that is driven when operated by the grounding operation device 24 is provided with an indicator fitting 20, and a closing / blocking prevention switch 19 is provided at a position fixed to the operating rod 27. . When the earthing switch 5 is turned on, the operating rod 27 is lowered and the closing / shut-off prevention switch 19 is pushed. When the on / off prevention switch 19 is pressed, a command for fixing at the disconnection position is sent from the switch to the vacuum 2-point 3-position type switch 2 so that the on / off operation cannot be performed. ing.

  By each of the above mechanisms, it is possible to prevent the earthing switch 5 from being turned on when the vacuum two-point three-position type switch 2 is turned on and off, thereby preventing a ground fault from occurring. Is possible. According to the above-described switchgear according to the present embodiment, the simplified configuration with a small number of parts prevents the ground switch from being turned on when it is not disconnected, and the ground switch is turned on. In this case, it is possible to prevent the disconnector from being turned on. Further, since the voltage detector 16 is installed and the electric interlock by the solenoid type lock switch 18 is operated based on the voltage, the main circuit is brought into the disconnection position when the voltage remains on the load side. Even in some cases, it is possible to prevent the ground switch 5 from being turned on.

  In the present embodiment, by preventing sliding of the door 10 itself covering the grounding operation unit 24, a ground fault can be prevented, and the number of special parts does not increase due to the interlock. In addition, about an interlock mechanism, it is possible to fulfill | perform an interlock mechanism by providing the slide-type coating | cover part which covers the new earthing operation device 24 other than the door which covers the earthing operation device 24. FIG. In this case, although the number of parts increases as compared with the case where the door 10 is provided with an interlock function, the mechanism is simplified as in the case of the door 10 and the minimum number of parts is increased. It is possible to prevent the situation from becoming a complicated structure.

  In this embodiment, the rotary lever is described as the interlock lever 11. However, it is not necessary to be a rotary lever, and the door can be slid only when it is in the disconnect position, and the door when it is in the closing / closing position. It is only necessary to prevent sliding. As a more specific example, when the sliding door is in the on / off position, the slide prevention means is located at a position where the path is obstructed, and the door path is not obstructed only when the door is in the disconnected position. It is sufficient that the slide preventing means is located at the position.

  In this embodiment, a switch having two points is used, which is advantageous in that the distance between the electrodes can be shortened and the switch gear can be downsized. However, each of the interlock mechanisms described above can be applied regardless of whether or not the two-point cutting is performed.

  In this embodiment, by using the return spring 13, an elastic force is generated in the door 10 so as to cover the operation portion. This prevents the door 10 from being kept open. However, it is needless to say that the return spring is not limited to an elastic body that can realize such an effect.

  In this embodiment, the electrical interlock is performed based on the voltage detected by the voltage detector 16 so that the solenoid-type lock switch 18 passes through the door 10 so that it cannot slide, but in the first place, the voltage is applied to the load side. A means for determining whether or not the voltage is applied is provided, and when it is determined that a voltage is applied by such means, the ground switch 5 may not be turned on based on a command from the means. Needless to say, the contents disclosed in this embodiment are merely examples.

  In this embodiment, the interlock lever 11 and the interlock pin 12 interfere with each other's operation. As a result, an interlock function for the operation of each operating device of the earthing switch 5 or the vacuum two-point three-position type switch 2 is exhibited and used as an interlock mechanism for restricting the operation of the other movable electrode. Therefore, the number of parts can be reduced. However, if the switch operates in response to the movement of the switch (including at least the disconnection function; the same shall apply hereinafter) and the interlock pin 12 of the ground switch 5 is not disconnected, Means for preventing movement to the position and the movement of the earthing switch, and when the interlock lever 11 is in the closing position when the earthing switch is in the closing position. Even if a means for preventing movement is further provided, the above-described interlock mechanism can be realized. Further, the interlock lever 11 is not limited to the interlock lever, and operates in accordance with the movement of the vacuum two-point three-position type switch 2 and opens and closes the vacuum two-point three-position type. When the device 2 is not in the disconnecting position, any member may be used as long as the interlock pin 12 is turned off when the grounding switch 5 is turned on and the operation is prevented when the grounding switch 5 is turned on. Further, the interlock pin 12 operates together with the switching operation of the earthing switch 5 when the earthing switch 5 is switched on and off, and when the earthing switch 5 is in the closing position, the vacuum double-pointing and three-positioning is performed. Any member may be used as long as the interlock lever 11 is prevented from moving when the mold switch 2 is moved from the disconnection position to a position other than the disconnection position.

  In this embodiment, the door 10 is provided with a pressing portion 14, and when the door 10 is opened, the closing / closing operation stopping mechanism 15 is pressed by the pressing portion 14 to operate the vacuum two-point three-position type switch 2. The case where it becomes impossible was described as an example. However, it is not limited to such an example, and is not limited to the door as described above, and corresponds to the movement of the sliding type covering portion, and the sliding type covering portion slides to a state where the grounding switch 5 can be operated. In some cases, it is only necessary to provide means for sending a command to disable the ground switch.

  In the first embodiment described above, the vacuum two-point cut three-position type switch 2 provided with the breaking / breaking function has been described as an example. However, the breaker and the breaker can be configured separately. In this case, each interlock described in the first embodiment may be configured between the disconnect switch and the ground switch 5. The illustration of this embodiment is omitted.

  Specifically, it is only necessary to prevent the earthing switch 5 from being turned on when the disconnecting switch is not disconnected. That is, when the disconnecting device moves from the disconnecting position to the closing position, the interlock lever of the disconnecting device moves in a substantially horizontal direction, thereby preventing the door 10 for operating the operation unit of the grounding operation device 24 from being opened. Further, when a voltage detector is arranged on the load side of the disconnector and a positive or negative voltage is detected by the voltage detector, it is determined that there is no disconnection state and the operation of the grounding operation device 24 is prevented. Therefore, the solenoid-type lock switch 18 passes through the through hole 17 provided in the door 10 to prevent the door 10 from being opened for operating the operation unit of the grounding operation device 24. Furthermore, even if the door 10 opens when the disconnector is not in the disconnect position for some reason, the interlock lever is in a substantially horizontal direction in that case, preventing the interlock pin from moving to the lower left, The introduction of the ground switch 5 can be prevented.

  Next, when the ground switch 5 is turned on, it is only necessary to prevent the disconnector from being turned on. In other words, when the door 10 is open, the pressing portion 14 provided in the door 10 is opened, and the closing / stopping operation stop mechanism 15 is pressed by the pressing portion 14 provided in the door 10 to form a vacuum two-point three-position type switch. 2 is inoperable. As a result, when the earthing switch 5 is turned on, that is, when the door 10 is opened, the vacuum two-point three-position type switch 2 becomes inoperable and cannot be turned on and moved to the shut-off position. Can be prevented. Further, since the interlock pin faces the lower left when the grounding switch 5 is turned on, the interlock lever cannot be moved in a substantially horizontal direction. Therefore, when the earthing switch 5 is turned on, it is possible to prevent the vacuum two-point cut three-position type switch 2 from moving from the disconnection position to the closing / breaking position. Further, as in the first embodiment, the operating rod provided in the earthing switch 5 is provided with a closing / breaking prevention switch 19, and when the earthing switch 5 is in the closing position, the closing / breaking prevention switch 19. Works. As a result, when the ground switch 5 is in the closing position, the vacuum two-point three-position type switch 2 cannot be switched on and off.

  As described above, each interlock mechanism described in the first embodiment can be applied even when the breaker and the disconnector are separated. Similarly to the first embodiment, the switchgear according to the present embodiment has a simplified configuration with a small number of parts, and prevents the operation of turning on the ground switch when it is not disconnected. When the switch is in the input state, the disconnecting device can be prevented from being turned on. In addition, since a voltage detector is installed and the interlock by the solenoid-type lock switch 18 is operated based on the voltage, it is possible to prevent the ground switch 5 from being turned on when the voltage remains on the load side. it can.

DESCRIPTION OF SYMBOLS 1 Switch gear 2 Vacuum 2-point cut 3 position type switch 3 Bus 4 Cable 5 Grounding switch 6 Breaking switch 7 Disconnection switch 9 Stopper 10 Door 11 Interlock lever 12 Interlock pin 13 Return spring 14 Pressing part 15 -Shut-off operation stop mechanism 16 Voltage detector 17 Through hole 18 Solenoid lock switch 19 On / off prevention switch 20 Indicator bracket 21 Lever rotating shaft 22 Lever support part 23 Upper rod 24 Grounding actuator 25 Operation part 26 Overhang part 27 Operation rod

Claims (7)

A switchgear comprising at least a switch having a disconnecting function and a grounding switch for grounding a load side of the main circuit, wherein the grounding switch comprises an operation part covered by a sliding type covering part, and the switchgear Is further provided with a slide prevention part for preventing the covering part from sliding, and the slide prevention part is released when the switch is in the disconnecting position,
The switchgear is characterized in that the covering portion is slidable, the operation portion is operable , and the slide prevention portion is provided in the switch. 2. The switchgear according to claim 1 , wherein when the operation portion is operable, an elastic force in a direction covering the operation portion acts on the covering portion. The switchgear according to claim 1 or 2 , wherein the switch includes a disconnecting switch, and the ground switch includes a ground switch.
The slide prevention unit is provided in the disconnection controller,
The covering portion is a sliding door that covers the operation portion,
The switch gear according to claim 1, wherein the slide preventing portion prevents the sliding door from sliding by being pressed. The switchgear according to any one of claims 1 to 3 , wherein the switch is a switch having three positions of closing, breaking, and disconnecting, and the switch is switched from a blocking position to a disconnecting position. It includes a stopper for operation during the movement of the said slide preventing unit, characterized in that operates in conjunction with the operation of the stopper upon movement to the disconnected position from the blocking position of the switch Switch gear. The switchgear according to any one of claims 1 to 4 , wherein the switchgear further corresponds to the movement of the covering part, and the operating part is operated by the movement or sliding of the covering part. A switchgear characterized by comprising means for transmitting a command for disabling the grounding switch when possible. The switchgear according to claim 5 ,
The switchgear characterized in that the means for transmitting the command further comprises a pressing part provided in the covering part and a transmitting part for the command corresponding to the pressing part. The switchgear according to any one of claims 1 to 6 ,
The grounding switch includes an operation rod that is driven at a closing / cutting position, and the operating rod includes a switch that switches between a switching position and a switching position of the grounding switch. A switchgear that sends a command to fix the switch in the disconnect position when the ground switch is in the closing position.

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