JP2021151150A - Switch gear - Google Patents

Abstract

To provide a switch gear which enables reduction of manufacturing costs and enables improvement of storage efficiency of an electric device which is stored in an area other than a gas chamber.SOLUTION: A switch gear has: an insulation chamber 6 including an electrically insulated space area 6s which houses a main circuit structure through which electric current flows when electric power is received or distributed; an electric device 4 which is stored in a storage area 2s different from the insulation chamber; and a connection mechanism 11 which is configured to be attached to or detached from the electric device stored in the storage area and may connect the electric device with the insulation chamber.SELECTED DRAWING: Figure 2

Description

Embodiments of the present invention relate to switch gears.

A switchgear is known as a switchgear for receiving and distributing power. The switch gear is provided in, for example, a building or a large facility, and stably supplies electric power by shutting off the accident current and opening / closing the load current. For this reason, the switch gear has, for example, a switch (circuit breaker, disconnector, grounding device), a transformer (instrument transformer, instrument transformer), inside a grounded metal housing. Various electric devices such as lightning arresters are stacked and stored in multiple stages.

Japanese Unexamined Patent Publication No. 2004-128268

By the way, as a switch gear (housing), there is a cubicle type gas insulation switchgear (C-GIS) having a gas chamber in which a main circuit structure through which a current flows during power reception and distribution is housed. The gas chamber is provided with an airtightly maintained space region, and sulfur hexafluoride gas is sealed in the space region to be electrically insulated. The above-mentioned electric equipment is housed in this gas chamber (spatial area).

In recent years, switch gears are required to reduce manufacturing costs. As a method of meeting this demand, for example, a part of the electric equipment housed in the gas chamber is stored in a storage area different from the gas chamber to make the gas chamber (spatial area) compact. As a result, the amount of expensive sulfur hexafluoride gas filled is reduced, and as a result, the cost of the switch gear is reduced.

However, such a method does not consider the connection structure for connecting the electrical equipment stored in the storage area to the gas chamber. Therefore, for example, depending on the configuration of the connection structure, it is undeniable that the manufacturing cost increases and the storage efficiency of the electrical equipment decreases.

An object of the present invention is to provide a switch gear that reduces manufacturing costs and improves the storage efficiency of electrical equipment stored outside the gas chamber.

According to the embodiment, an insulating chamber having an electrically insulated space region and a main circuit structure through which a current flows during power reception and distribution is housed in the space region, and an electric device stored in a storage region different from the insulating chamber. It has a connection mechanism that is detachably attached to and detachable from the electric device stored in the storage area and can connect the electric device to the insulating chamber.

The front view of the switch gear which concerns on embodiment. In the cross-sectional view taken along the line F2-F2 of FIG. 1, the figure which shows the structure of the connection mechanism which concerns on embodiment. The cross-sectional view which shows an example of the connection method of a connection means and a transformer (terminal). The perspective view which shows the structure of the moving mechanism in a partially enlarged manner. The schematic diagram which shows the state which moved the transformer by the moving mechanism. In the cross-sectional view taken along the line F2-F2 of FIG. 1, the figure which shows the structure of the connection mechanism which concerns on the modification.

[One Embodiment]
Hereinafter, the switch gear according to the embodiment will be described with reference to the attached drawings. The embodiments disclosed in the accompanying drawings are merely examples, and the invention is not limited thereto.

FIG. 1 is a front view of the switch gear 1 in which the opening / closing door 1a on one side is opened. As the switchgear 1, a cubicle type gas-insulated switchgear (C-GIS) is assumed. The switch gear 1 has a grounded metal housing 2, and inside the housing 2, for example, a switch 3 (circuit breaker, disconnector, grounding device) and a transformer 4 (instrument). Various electric devices such as transformers for instruments, diversion devices for instruments), and lightning arresters 5 are stacked and stored in multiple stages.

As shown in FIG. 1, the housing 2 has a rectangular three-dimensional contour extending in directions orthogonal to each other (width direction Dw, depth direction Df, height direction Dh). The housing 2 has a horizontally arranged floor 2a, a ceiling 2b facing the floor 2a, and a side wall 2c interposed so as to surround a space between the floor 2a and the ceiling 2b. The floor 2a and the ceiling 2b extend in the horizontal direction including the width direction Dw and the depth direction Df. The height direction Dh is defined along the gravitational direction orthogonal to the horizontal direction, and the ceiling 2b is positioned vertically upward in the gravitational direction with respect to the floor 2a.

Further, an insulating chamber 6 is provided inside the housing 2 surrounded by the floor 2a, the ceiling 2b, and the side wall 2c. The insulating chamber 6 is arranged on the upper side in the height direction Dh, in other words, closer to the ceiling 2b. The insulating chamber 6 has a rectangular three-dimensional structure extending in directions Dw, Df, and Dh orthogonal to each other. The insulation chamber 6 is provided with a three-dimensional space region 6s (see FIG. 2) that is kept airtight inside, and sulfur hexafluoride gas (not shown) is sealed in the space region 6s to be electrically insulated. ing.

As shown in FIG. 1, the insulating chamber 6 in which sulfur hexafluoride gas is sealed is also referred to as a gas chamber, and a main circuit structure (not shown) through which a current flows during power reception and distribution in this gas chamber (spatial region 6s). Is stored. Further, in the insulating chamber 6, a part of the above-mentioned electric equipment is stored as a component for constructing the main circuit structure. In FIG. 1, as an example, other electrical equipment (switch 3, lightning arrester 5, instrument transformer (not shown)) excluding the transformer 4 (for example, an instrument transformer) is housed in the insulation chamber 6.

According to such a main circuit structure, for example, high-voltage power supplied from an external power source via a power cable (not shown) is received by the main circuit structure and then the main circuit structure and the bus. Power is distributed to various places from (not shown) through an external cable. At this time, for example, the switch 3 is used to shut off the accident current and open / close the load current, so that the electric power is stably supplied.

The voltage transformer (electrical device) 4 is stored in a storage area 2s different from that of the insulating chamber 6 in a state where it can be moved by a moving mechanism 7 described later. The instrument transformer (electrical device) 4 is a grounded instrument transformer (EVT) grounded on the outer layer. A grounded instrument transformer has a conductive layer (not shown) formed on its surface, and this conductive layer is connected to the conductor 12 via a metal paint (not shown) applied to the outer periphery of the connection mechanism 11. .. Thus, the grounded instrument transformer is grounded on the outer layer. As an example in FIG. 1, the storage area 2s is adjacent to the lower side (directly below) of the insulating chamber 6 when viewed in the height direction Dh (in other words, the insulating chamber 6 is stored in the height direction Dh). It is positioned (adjacent to the upper side (immediately above) of the region 2s). The storage area 2s is defined as a three-dimensional space that extends in directions Dw, Df, and Dh that are orthogonal to each other.

The moving mechanism 7 includes a pair of guide rails 8 extending in a preset direction (horizontal direction), and a slider 9 that can move along the guide rails 8. The guide rails 8 face each other in parallel with a distance from each other and extend in the depth direction Df. The slider 9 has a flat plate shape that extends in the horizontal direction including the width direction Dw and the depth direction Df, and is configured to be capable of mounting an instrument transformer 4 that is stored in the storage area 2s.

According to such a configuration, the slider 9 can move along the guide rail 8 with the instrument transformer 4 mounted. As a result, the instrument transformer 4 is stored in the storage area 2s while being mounted on the slider 9. As an example in FIG. 1, three instrument transformers 4 are mounted side by side in parallel on the slider 9, and an iron plate 10 for preventing a correlation short circuit is interposed between the transformers 4.

The voltage transformer 4 stored in the storage area 2s is connected to the above-mentioned insulating chamber 6 by a connection mechanism 11 described later. At this time, the voltage transformer 4 is connected to the main circuit structure in the insulating chamber 6 via the connection mechanism 11. For example, the insulation chamber 6 is provided with a conductor 12 (see FIG. 2) connected to the main circuit structure, and the instrument transformer 4 is connected to the conductor 12 via the connection mechanism 11.

FIG. 2 is an arrangement configuration diagram of the connection mechanism 11 with respect to the instrument transformer 4 stored in the storage area 2s. When the instrument transformer 4 is mounted on the slider 9, the instrument transformer 4 is always maintained in a constant position and posture by, for example, a guide member 13 provided on the slider 9. In this state, the instrument transformer 4 is stored in the storage area 2s together with the slider 9.

At this time, the slider 9 is held at a preset position by the positioning means 14. The positioning means 14 is provided in the moving mechanism 7 described above, and limits the movement of the slider 9. As an example in FIG. 2, the positioning means 14 is configured as a stopper interposed in the guide rail 8.

In this case, the slider 9 equipped with the instrument transformer 4 moves to the storage area 2s along the guide rail 8. At this time, a part of the slider 9 comes into contact with the positioning means (stopper) 14. This limits the movement of the slider 9. As a result, the instrument transformer 4 stored in the storage area 2s together with the slider 9 is held at a preset position by the positioning means (stopper) 14.

Note that FIG. 4 shows an example of the moving mechanism 7 (guide rail 8, positioning means (stopper) 14). As shown in FIG. 4, the moving mechanism 7 includes a moving body 15 that can move along the guide rail 8. A plurality of rollers 16 that roll along the inside of the guide rail 8 are rotatably attached to both sides of the moving body 15.

The moving body 15 has a flat mounting surface 15s formed on the upper side in the height direction Dh, and the slider 9 is mounted on the mounting surface 15s. As the mounting method, for example, existing mounting methods such as adhesion and screwing can be applied. In FIG. 4, as an example, two moving bodies 15 are arranged along each guide rail 8. Then, a screw (not shown) is fastened to the screw hole 15h provided in the moving body 15 (mounting surface 15s) from the slider 9 side. As a result, the moving body 15 is integrated with the four corners of the slider 9.

In this state, for example, when the slider 9 is pressed, the pressing force at that time is transmitted from the slider 9 to the moving body 15. At this time, each roller 16 rolls along the guide rail 8, and the moving body 15 moves following this. After that, when the slider 9 reaches the storage area 2s, the moving body 15 comes into contact with the positioning means (stopper) 14, and its movement is restricted. As a result, the movement of the slider 9 integrated with the moving body 15 is also restricted. As a result, the instrument transformer 4 mounted on the slider 9 is held at a preset position (see FIG. 2).

FIG. 2 shows a state in which the instrument transformer 4 is held at a preset position by the positioning means (stopper) 14. In this state, the voltage transformer 4 is connected to the above-mentioned insulating chamber 6 (conductor 12) by the connection mechanism 11. The connection mechanism 11 is configured to be detachably attached to the instrument transformer 4 stored in the storage area 2s. Hereinafter, a specific description will be given.

As shown in FIG. 2, the connection mechanism 11 includes a terminal 17 and a connection means 18. The terminal 17 is connected to the conductor 12 described above and extends from the insulating chamber 6 toward the storage area 2s. The connecting means 18 is detachably connected to the terminal 17 and the instrument transformer 4. In this case, the terminal 17 can be configured so that only the connecting means 18 can be attached and detached.

The terminal 17 includes a first mounting portion T1, and the instrument transformer 4 includes a second mounting portion T2. Both mounting portions T1 and T2 have the same shape as each other. On the other hand, the connecting means 18 has a rod-shaped connecting conductor extending straight, and is provided with connecting portions (first connecting portion S1 and second connecting portion S2) at both ends thereof. Both connecting portions S1 and S2 have the same shape as each other. As the contour shapes of the mounting portions T1 and T2 and the connecting portions S1 and S2, for example, a disk shape, a rectangular shape, or the like can be applied according to the application.

Connection portions (first connection portion S1 and second connection portion S2) are detachably connected to the first attachment portion T1 and the second attachment portion T2. The connecting portions (first connecting portion S1 and second connecting portion S2) satisfy a line-symmetrical relationship with respect to a virtual portion (for example, a virtual line (not shown)) that bisects both ends of the connecting means 18. It is configured in. According to this configuration, the first connecting portion S1 can be detachably connected to both the first mounting portion T1 and the second mounting portion T2. At the same time, the second connecting portion S2 can be detachably connected to both the first mounting portion T1 and the second mounting portion T2.

As a method of detachably connecting the connecting portions S1 and S2 to the mounting portions T1 and T2, for example, an existing mounting method such as adhesion or Holt tightening can be applied. In FIG. 3, as an example, the connecting portions S1 and S2 are connected to the mounting portions T1 and T2 by bolts 19. The connection portions S1 and S2 are formed with through holes 20 through which the screw portion 19a of the bolt 19 is inserted. The mounting portions T1 and T2 are formed with screw holes 21 into which the screw portions 19a can be screwed. A plurality of such configurations are provided with intervals in the circumferential direction of the connecting portions S1 and S2 and the mounting portions T1 and T2.

Thereby, for example, in a state where the first connecting portion S1 is in contact with the first mounting portion T1, the screw portion 19a of the bolt 19 is fastened to the screw hole 21 through the through hole 20. Similarly, in a state where the second connecting portion S2 is in contact with the second mounting portion T2, the screw portion 19a of the bolt 19 is fastened to the screw hole 21 through the through hole 20. As a result, the connecting portions S1 and S2 are connected to the mounting portions T1 and T2. Thus, the connecting means 18 can be connected to the terminal 17 and the instrument transformer 4.

On the other hand, in a state where the connecting portions S1 and S2 are connected to the mounting portions T1 and T2, the screw portion 19a is released from the screw hole 21, and then the bolt 19 is pulled out through the through hole 20. As a result, the connecting portions S1 and S2 are removed from the mounting portions T1 and T2. Thus, the connecting means 18 can be removed from the terminal 17 and the instrument transformer 4.

In this case, when connecting the connecting portions S1 and S2 and the mounting portions T1 and T2, for example, it is preferable to interpose a sealing member 22 such as an O-ring. In FIG. 3, as an example, a seal member 22 having a V-shaped cross section is applied. The seal member 22 can be made of, for example, a flexible rubber member (natural rubber, synthetic rubber).

The mounting portions T1 and T2 are formed with recesses 23 continuous in the circumferential direction at portions facing the seal member 22. The recess 23 is formed by continuously recessing the surfaces of the mounting portions T1 and T2 along the circumferential direction in a V-shaped cross section. On the other hand, the connecting portions S1 and S2 are formed with convex portions 24 continuous in the circumferential direction at a portion facing the seal member 22. The convex portion 24 is configured such that the surfaces of the connecting portions S1 and S2 are continuously projected along the circumferential direction in a triangular cross section.

According to such a configuration, the connecting portions S1 and S2 are connected to the mounting portions T1 and T2 by the bolt 19 in a state where the seal member 22 is interposed between the connecting portions S1 and S2 and the mounting portions T1 and T2. Let me. At this time, the seal member 22 is pressed against the concave portion 23 by the convex portion 24. As a result, the seal member 22 extends without a gap in the circumferential direction between the connecting portions S1 and S2 and the mounting portions T1 and T2. Thus, the connecting means 18 can be connected to the terminal 17 and the instrument transformer 4 with excellent airtightness and accuracy.

Here, in a state where the instrument transformer 4 is held at a preset position (see FIG. 2) by the positioning means (stopper) 14, the positional relationship (layout) between the terminal 17 and the instrument transformer 4 is established. Pay attention to it. The terminal 17 and the voltage transformer 4 are set in a positional relationship that overlaps in the gravity direction (height direction Dh) and does not overlap in the horizontal direction (width direction Dw, depth direction Df).

Further, in a state where the instrument transformer 4 is connected to the terminal 17 via the connection means 18, attention is paid to the positional relationship (layout) between the connection means 18, the terminal 17, and the instrument transformer 4. Seen in the moving direction of the slider 9 (depth direction Df), the connecting means 18 is positioned so as to overlap the terminal 17 and the instrument transformer 4. In other words, the connecting means 18 is positioned without overlapping the terminal 17 and the instrument transformer 4 when viewed in the gravity direction (height direction Dh) orthogonal to the moving direction (depth direction Df) of the slider 9.

In addition, in a state where the terminal 17 and the instrument transformer 4 are connected by the connecting means 18, the positional relationship (layout) between the first mounting portion T1 of the terminal 17 and the second mounting portion T2 of the instrument transformer 4 ). Both mounting portions T1 and T2 face the same direction as each other when viewed in the moving direction of the slider 9 (depth direction Df). As an example in FIG. 2, both mounting portions T1 and T2 face the direction toward the opening / closing door 1a, specifically, the front direction of the switch gear 1 that is opened when the opening / closing door 1a is opened.

From another point of view, both mounting portions T1 and T2 are set in a positional relationship that overlaps in the gravity direction (height direction Dh) and does not overlap in the horizontal direction (width direction Dw, depth direction Df). There is. Specifically, both mounting portions T1 and T2 are arranged side by side along one virtual plane (not shown) parallel to the gravity direction (height direction Dh).

In this case, in order to improve the connectivity (for example, ease of connection) between the connection portions S1 and S2 of the connection means 18 and the second attachment portion T2 of the instrument transformer 4, the second instrument transformer 4 is used. It is assumed that the mounting portion T2 is projected in a preset direction. As an example in FIG. 2, the second mounting portion T2 is configured to project in the direction toward the opening / closing door 1a, specifically, in the front direction of the switch gear 1 that is opened when the opening / closing door 1a is opened. .. The protrusion amount and the protrusion distance are not particularly limited here because they are set according to, for example, the type and shape of the connection means 18 (connection portions S1 and S2).

Next, pay attention to the positional relationship (layout) of the connecting portions S1 and S2 of the connecting means 18 based on the arrangement configuration of the mounting portions T1 and T2 as described above. In a state where the connecting means 18 is connected to the terminal 17 and the instrument transformer 4, the connecting portions S1 and S2 at both ends of the connecting means 18 overlap in the gravity direction (height direction Dh) and in the horizontal direction (width direction). The positional relationship is set so that it does not overlap with Dw and Df in the depth direction. Specifically, both connecting portions S1 and S2 are arranged side by side along one virtual plane (not shown) parallel to the direction of gravity (height direction Dh).

According to the above configuration, the direction in which the connecting means 18 (connecting portions S1 and S2) are detachably connected to the terminal 17 (first mounting portion T1) and the voltage transformer 4 (second mounting portion T2) is They are set in the same direction as each other. In this case, the connection direction is defined as the front direction of the switch gear 1 that is opened when the opening / closing door 1a is opened.

Then, as shown in FIGS. It can be removed from the vessel 4. Subsequently, a traction force is applied to the handle 9t of the slider 9 to move the slider 9 along the guide rail 8. As a result, the instrument transformer 4 mounted on the slider 9 can be pulled out (see FIG. 5). At this time, for example, when the instrument transformer 4 is replaced, the new instrument transformer 4 can be mounted in a certain position on the slider 9 in a certain posture by the guide member 13.

After that, the slider 9 is moved along the guide rail 8 by applying a pressing force to the handle 9t. Eventually, the slider 9 is held at a preset position by the positioning means 14. As a result, the instrument transformer 4 mounted on the slider 9 is stored in the storage area 2s together with the slider 9 (see FIG. 2). At this time, the stored instrument transformer 4 is held at a preset position. As a result, the connecting means 18 can be connected to the terminal 17 and the instrument transformer 4 along the same direction in which the connecting means 18 is removed from the terminal 17 and the instrument transformer 4.

As described above, according to the present embodiment, the insulation chamber 6 (spatial area 6s) is made compact by reducing the number of storage devices in the insulation chamber 6. As a result, the amount of expensive sulfur hexafluoride gas enclosed can be significantly reduced. In addition, the configuration of the main circuit structure in the insulating chamber 6 can be simplified. As a result, the manufacturing cost of the switch gear 1 can be reduced.

According to the present embodiment, the instrument transformer 4 is movably stored in the storage area 2s by the moving mechanism 7, and the instrument transformer 4 stored in the storage area 2s is connected to the insulating chamber 6 by the connecting mechanism 11. Let me. As a result, the storage efficiency of the instrument transformer 4 stored in other than the insulation chamber 6 can be improved.

According to this embodiment, the direction in which the connecting means 18 (connecting portions S1 and S2) are detachably connected to the terminal 17 (first mounting portion T1) and the voltage transformer 4 (second mounting portion T2) is determined. They are set in the same direction as each other. This makes it possible to facilitate the connection work by the connection means 18.

According to the present embodiment, when the instrument transformer 4 is replaced, the instrument transformer 4 can be disconnected from the terminal 17 simply by removing the connection mechanism 11. As a result, the disconnecting operation can be dramatically simplified or simplified as compared with the conventional case. Then, after the disconnecting operation, the instrument transformer 4 can be easily and smoothly pulled out by the moving mechanism 7. As a result, the instrument transformer 4 can be replaced efficiently in a short time.

According to this embodiment, the instrument transformer 4 can be stored in the storage area 2s which is avoided from the insulating chamber 6 in which the sulfur hexafluoride gas is sealed. As a result, when a single item failure of the instrument transformer 4 occurs, the spread range of the matter can be reduced and the recovery range is also limited, so that the recovery work can be performed at low cost.

[Modification example]
In the above-described embodiment, the second mounting portion T2 of the instrument transformer 4 is configured to project in the front direction of the switch gear 1, but instead, as shown in FIG. 6, for example, the second mounting portion T2 is provided. , The switch gear 1 may be configured so as to project in the direction toward the ceiling 2b (insulation chamber 6) (upper side in the height (gravity) direction Dh). In this case, the total length of the connecting means 18 is slightly shortened, but since the configuration is the same as that of the embodiment, the description thereof will be omitted.

In the above embodiment, it is assumed that the instrument transformer 4 (electrical equipment) is connected to the insulation chamber 6 by the connection mechanism 11, but instead, the instrument transformer 4 (electrical equipment) is connected by the connection mechanism 11. May be directly connected to the bus (not shown).

In the above-described embodiment, the voltage transformer 4 is assumed as the electrical device to be stored in the electric device other than the insulating chamber 6, but instead, for example, the lightning arrester 5 is stored in the storage area 2s by the above-mentioned moving mechanism 7. It may be.

Although the embodiments and modifications of the present invention have been described above, these embodiments and modifications are presented as examples and are not intended to limit the scope of the invention. These embodiments and modifications can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Switch gear, 1a ... Opening and closing door, 2 ... Housing, 2s ... Storage area, 3 ... Switch (circuit breaker, disconnector, grounding device), 4 ... Transformer (instrument transformer), 5 ... Lightning striker, 6 ... Insulation chamber, 6s ... Spatial area, 7 ... Moving mechanism, 8 ... Guide rail, 9 ... Slider, 11 ... Connecting mechanism, 12 ... Conductor, 13 ... Guide member, 14 ... Positioning means, 15 ... Moving body, 15s ... Mounting surface, 15h ... screw hole, 16 ... roller, 17 ... terminal, 18 ... connection means, 19 ... bolt, 20 ... through hole, 21 ... screw hole, 22 ... seal member, 23 ... concave, 24 ... convex, T1 ... 1st mounting portion, T2 ... 2nd mounting portion, S1 ... 1st connecting portion, S2 ... 2nd connecting portion.

Claims (16)

An insulating chamber having an electrically insulated space area and a main circuit structure in which a current flows during power reception and distribution is housed in the space area.
Electrical equipment stored in a storage area different from the insulation chamber,
A switch gear having a connection mechanism that is detachably attached to and detachable from the electric device stored in the storage area and that can connect the electric device to the insulating chamber. The connection mechanism
A terminal extending from the insulating chamber toward the storage area,
The switch gear according to claim 1, further comprising the terminal and a connecting means detachably connected to the electric device. The switch gear according to claim 2, wherein the terminals and the electric devices are set in a positional relationship in which they overlap in the direction of gravity and do not overlap in the horizontal direction. The terminal and the electric device each include a mounting portion to which the connecting means is detachably connected.
The switch gear according to claim 3, wherein these mounting portions are oriented in the same direction as each other. The switch gear according to claim 4, wherein the terminal and the mounting portion of the electric device are set in a positional relationship in which they overlap in the direction of gravity and do not overlap in the horizontal direction. The switch gear according to claim 5, wherein the terminal and the mounting portion of the electric device are arranged side by side along one virtual plane parallel to the direction of gravity. The switch gear according to claim 6, wherein the mounting portion of the electric device projects in a preset direction. The connecting means is provided at both ends with connecting portions that are detachably connected to the mounting portion.
The switch gear according to claim 4, wherein the connecting portion is configured to satisfy a line-symmetrical relationship with respect to a virtual portion obtained by bisecting both ends of the connecting means. The switch gear according to claim 8, wherein the direction in which the connecting portion is detachably connected to the mounting portion is set to be the same direction as each other. In a state where the connecting means is connected to the terminal and the electric device,
The switch gear according to claim 9, wherein the connecting portions at both ends of the connecting means are set in a positional relationship in which they overlap in the direction of gravity and do not overlap in the horizontal direction. The switch gear according to claim 10, wherein the connecting portions at both ends of the connecting means are arranged side by side along one virtual plane parallel to the direction of gravity. It has a moving mechanism for moving the electric device, and has a moving mechanism.
The moving mechanism
A guide rail that extends in a preset direction,
A slider that can move along the guide rail with the electrical equipment mounted is provided.
The switch gear according to claim 4, wherein the electric device is stored in the storage area while being mounted on the slider. The moving mechanism includes positioning means that limits the movement of the slider.
The switch gear according to claim 12, wherein the electric device stored in the storage area is held at a preset position by the positioning means. In a state where the electrical device is held at a preset position by the positioning means,
13. The switch gear according to claim 13, wherein the terminal and the electric device overlap each other in the direction of gravity, and the terminal and the mounting portion of the electric device face each other in the same direction when viewed in the moving direction of the slider. .. In a state where the electric device held by the positioning means is connected to the terminal via the connecting means,
Seen in the moving direction of the slider, the connecting means is positioned so as to overlap the terminal and the electric device.
The switch gear according to claim 14, wherein the connecting means is positioned so as not to overlap the terminal and the electric device when viewed in the direction of gravity orthogonal to the moving direction of the slider. The switch gear according to claim 1, wherein the electric device includes a transformer for voltage measurement and a lightning arrester.

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