Switchgear

Abstract

To improve workability in maintenance and inspection by expanding a space of a main bus bar chamber without increasing outline dimensions of a switchgear.SOLUTION: A switchgear comprises: a main bus bar chamber partition plate 116 in an upper side horizontal direction arranged on an upper side in a panel height direction in a main bus bar chamber 107; a main bus bar chamber partition plate 117 in a lower side horizontal direction arranged on a lower side in the panel height direction in the main bus bar chamber 107; a main bus bar chamber partition plate 118 in an upper side vertical direction located on the upper side in the panel height direction for partitioning the main bus bar chamber 107 in a panel depth direction; and a main bus bar chamber partition plate 119 in a lower side vertical direction located on the lower side in the panel height direction for partitioning the main bus bar chamber 107 in the panel depth direction, wherein the main bus bar chamber partition plate 118 in the upper side vertical direction and the main bus bar chamber partition plate 119 in the lower side vertical direction are subjected to bending processing to expand a space of the main bus bar chamber 107 in the panel depth direction.SELECTED DRAWING: Figure 9

Description

Technical Field

[0001] The present disclosure relates to a switchgear.

Background Art

[0002] In the standard "JEM1425:2011" to which domestic switchgears have hitherto conformed, regarding the partitioning within the switchgear, the upper cable chamber and the lower cable chamber were defined as one partition. However, in the future, it will be switched to "JIS C 62271-200:2021" which emphasizes maintenance and inspection. In this JIS standard, a new specification LSC2B-PI / PM is defined in which all partitions are partitioned by a grounding metal or non-metal so that an operator can perform maintenance and inspection work in other partitions (non-charged parts) even when some partitions are being charged.

[0003] In switchgears that have conformed to the JEM1425:2011 standard, since there was no distinction between the upper cable chamber and the lower cable chamber, the partition plate that separates the main bus chamber and the cable chamber was composed of a single flat plate. Therefore, if the partition plate of the main bus chamber was removed, it was possible to easily access all three-phase main buses, so the main bus chamber did not have a large space considering workability during maintenance and inspection. In a switchgear corresponding to LSC2B-PI / PM described in the newly established JIS standard, it mimics the shape of the conventional main bus chamber partition plate. The main bus chamber partition plate that mimics the conventional shape is composed of two plates so that it can be divided at the cable chamber partition plate part that separates the upper cable chamber and the lower cable chamber in order to conform to LSC2B-PI / PM. As something that partitions the upper cable chamber and the lower cable chamber in this way by the cable chamber partition plate part, there was something as shown in Patent Document 1.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In Patent Document 1 mentioned above, when accessing the main busbar chamber from the upper cable chamber, if only the upper vertical main busbar chamber partition plate is removed for work, since the lower vertical main busbar chamber partition plate has a flat plate shape, the accessibility to the T-phase conductor side is poor, and it is difficult to replace the conductor or connect the main busbar to the adjacent switchgear, resulting in poor workability. Also, there is a problem that work such as visual inspection of parts is difficult without using a hand mirror. Similarly, when accessing the main busbar chamber from the lower cable chamber, the accessibility to the R-phase conductor side deteriorates.

[0006] To solve these problems, expanding the space of the main busbar chamber by increasing the outer shape of the switchgear panel can be done, but this causes problems such as an increase in material cost and a further increase in the installation space. Also, if the space of the main busbar chamber is increased in the depth direction of the switchgear while maintaining the outer shape of the switchgear, problems such as not being able to ensure the insulation distance between the lower vertical main busbar chamber partition plate and the lower cable (energized part) occur. Furthermore, when the space of the main busbar chamber is narrow, if the short-circuit current value or the current value flowing through the main busbar becomes large, it becomes difficult to ensure the performance of the switchgear against short-circuit accidents or temperature rises, and there is a problem that it is difficult to ensure those performances with the structure of the prior art.

[0007] The present disclosure discloses a technique for solving the above problems, and aims to improve the accessibility to the main busbar chamber and the workability during maintenance and inspection by expanding the space of the main busbar chamber without increasing the outer dimensions of the switchgear.

Means for Solving the Problems

[0008] The switchgear of the present disclosure includes a housing, a main busbar chamber disposed within the housing and having a main busbar wired therein, The upper horizontal main busbar chamber partition plate disposed on the upper side in the panel height direction in the main busbar chamber, The lower horizontal main busbar chamber partition plate disposed on the lower side in the panel height direction in the main busbar chamber, The upper vertical main busbar chamber partition plate located on the upper side in the panel height direction for partitioning the main busbar chamber in the panel depth direction, A lower vertical main busbar chamber partition plate located on the lower side in the panel height direction for partitioning the main busbar chamber in the panel depth direction, A switchgear in which the upper vertical main busbar chamber partition plate and the lower vertical main busbar chamber partition plate are bent so as to expand the space of the main busbar chamber in the panel depth direction.

Advantages of the Invention

[0009] According to the switchgear of the present disclosure, without increasing the outer dimensions of the switchgear, by expanding the space of the main busbar chamber, the accessibility to the main busbar chamber can be improved, and the workability during maintenance and inspection can also be improved.

Brief Description of the Drawings

[0010]

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Embodiments for Carrying Out the Invention

[0011] The comparative example related to this embodiment will be described below. FIG. 1 is a schematic diagram showing the internal configuration of a switching device which is a first comparative example. The inside of the housing 1 of the switching device is partitioned into a plurality of chambers by a partition plate 4. The partition plate 4 is provided with a vertical partition plate portion 4A. FIG. 2 is a side view showing the vertical partition plate portion 4A, and FIG. 3 is a perspective view showing the vertical partition plate portion 4A. The compartment where the circuit breaker 2 as a switching device is housed is the switching device chamber 100A, the compartment where the three-phase (R-phase, S-phase, T-phase) busbars 5 are housed is the busbar chamber 100B, and the compartment where the external cable 6 is housed is the cable chamber 100C.

[0012] In the switching device chamber 100A, for example, two-stage lead-out fixing frames 3 are installed, and circuit breakers 2 are respectively arranged on the lead-out fixing frames 3. In the busbar chamber 100B, three-phase (R-phase, S-phase, T-phase) busbars 5 are arranged, and each busbar 5 is electrically connected to the main circuit conductor 10 via a terminal. In the cable chamber 100C, three-phase (R-phase, S-phase, T-phase) cables 6 are arranged, and each cable 6 is electrically connected to the main circuit conductor 10 via a terminal. The lead-out fixing frame 3 is provided with a fixing frame partition plate 30 continuous with the partition plate 4, and a bushing 7 is attached to the fixing frame partition plate 30. The bushing 7 is configured such that the main circuit conductor 10 connected to the busbar 5 and the cable 6 penetrates and is attached. FIG. 4 is a schematic diagram showing a state where the vertical partition plate portion 4A is removed.

[0013] In the case of such an opening / closing device, since there was no distinction between the upper cable chamber and the lower cable chamber, the partition plate that separated the bus chamber and the cable chamber was composed of a single flat plate 4A. Therefore, if the vertical partition plate portion 4A of the bus chamber was removed, it was possible to easily access all three-phase buses. As a result, the bus chamber did not have a large space considering the workability during maintenance and inspection.

[0014] FIG. 5 is a side view showing a switchgear which is a second comparative example. In FIG. 5, the switchgear is, for example, entirely covered with a grounded metallic housing, and each compartment of the main circuit compartment including the circuit breaker compartments 53 having circuit breakers 51 and 52, the bus compartment 54, the upper cable compartment 55, and the lower cable compartment 56 is partitioned by a partition plate 57 of a grounded metal or an insulator.

[0015] The left side of FIG. 5 is the front of the switchgear, where doors 58 and 59 are provided. By opening the doors 58 and 59, the circuit breakers 51 and 52 are drawn out and operations on the operation panel are performed. The right side of FIG. 5 is the back of the switchgear, where a back cover is attached, covering the upper cable compartment 55 and the lower cable compartment 56.

[0016] In FIG. 5, region A shows the back cover portion. The back cover is configured by engaging a cover portion divided into an upper back cover portion 60 and a lower back cover portion 61. The engaging portion between the upper back cover portion 60 and the lower back cover portion 61 forms an engaging portion by overlapping respective bent portions 63. A main bus 64 is wired in the bus compartment 54, and the bus compartment 54 is partitioned by an upper vertical main bus chamber partition plate 65 and a lower vertical main bus chamber partition plate 66. Also, the upper cable compartment 55 and the lower cable compartment 56 are partitioned by a cable chamber partition plate 67.

[0017] FIG. 6A is a side view showing the upper vertical main busbar chamber partition plate, and FIG. 6B is a perspective view showing the upper vertical main busbar chamber partition plate. Further, FIG. 7A is a side view showing the lower vertical main busbar chamber partition plate, and FIG. 7B is a perspective view showing the lower vertical main busbar chamber partition plate. Furthermore, FIG. 8 is a side view of the switchgear showing the state where the upper vertical main busbar chamber partition plate 65 is removed. In FIG. 8, when only the upper vertical main busbar chamber partition plate is removed for work, since the lower vertical main busbar chamber partition plate has a flat plate shape, the accessibility to the T-phase conductor side is poor, and it is difficult to replace the conductor or perform the connection work of the main busbar with the adjacent switchgear, resulting in poor workability. This embodiment is designed to solve the above problems.

[0018] Embodiment 1. FIG. 9 is a side view showing the switchgear according to Embodiment 1, and is a side view showing the switchgear with a partition plate that expands the space of the main busbar chamber in the depth direction of the panel. In the figure, arrow C indicates the depth direction of the panel, and arrow B indicates the height direction of the panel. Here, the Y1 direction in the height direction B of the panel is the upper side in the height direction of the panel, and the Y2 direction is the lower side in the height direction of the panel. Furthermore, F indicates the front side, and R indicates the back side. The switchgear according to this embodiment is composed of a housing 101. In the housing 101, doors 102, 103, and 104 are attached, and circuit breakers 105 and 106 are arranged. Further, a main busbar chamber 107 is arranged adjacent to the circuit breakers 105 and 106, and a main busbar 108 is wired in the main busbar chamber 107. The housing 101 is partitioned by partition plates 109 and 110.

[0019] Furthermore, an upper cable chamber 111 and a lower cable chamber 112 are installed in the housing 101. An upper cable 113 is arranged in the upper cable chamber 111, and a lower cable 114 is arranged in the lower cable chamber 112. The upper cable chamber 111 and the lower cable chamber 112 are partitioned by a cable chamber partition plate 115. The main busbar chamber 107 is partitioned by an upper horizontal main busbar chamber partition plate 116 and a lower horizontal main busbar chamber partition plate 117.

[0020] According to the present embodiment, a bending process for expanding the space of the main busbar chamber 107 in the depth direction C of the panel is provided on the vertical main busbar chamber partition plate. That is, the upper vertical main busbar chamber partition plate 118 located on the upper side in the panel height direction for partitioning the main busbar chamber 107 in the depth direction C of the panel is subjected to the bending process as shown in FIG. 10. Also, the lower vertical main busbar chamber partition plate 119 located on the lower side in the panel height direction for partitioning the main busbar chamber 107 in the depth direction of the panel is subjected to the bending process as shown in FIG. 11. FIG. 10A is a side view showing the upper vertical main busbar chamber partition plate, and FIG. 10B is a perspective view showing the upper vertical main busbar chamber partition plate, and it corresponds to the D part in FIG. 9. In FIGS. 10A and 10B, the upper vertical main busbar chamber partition plate 118 is provided with a first vertical portion 118a extending in the panel height direction, a first horizontal portion 118b extending in the depth direction C of the panel, a second vertical portion 118c extending in the panel height direction, and a second horizontal portion 118d extending in the depth direction C of the panel. That is, the upper vertical main busbar chamber partition plate 118 is configured by the continuous connection of the first vertical portion 118a, the first horizontal portion 118b, the second vertical portion 118c, and the second horizontal portion 118d in the depth direction C of the panel. Also, FIG. 11A is a side view showing the lower vertical main busbar chamber partition plate, and FIG. 11B is a perspective view showing the lower vertical main busbar chamber partition plate, and it corresponds to the E part in FIG. 9. In FIGS. 11A and 11B, the lower vertical main busbar chamber partition plate 119 is provided with a third horizontal portion 119a extending in the depth direction C of the panel, a third vertical portion 119b extending in the panel height direction, a fourth horizontal portion 119c extending in the depth direction C of the panel, and a fourth vertical portion 119d extending in the panel height direction. That is, the lower vertical main busbar chamber partition plate 119 is configured by the continuous connection of the fourth vertical portion 119d, the fourth horizontal portion 119c, the third vertical portion 119b, and the third horizontal portion 119a in the depth direction C of the panel.

[0021] When the vertical main busbar chamber partition plate in this embodiment is provided, the space of the main busbar chamber 107 can be expanded compared to the case where the vertical main busbar chamber partition plate described in Embodiment 3 is provided later. Therefore, the workability during maintenance and inspection is further improved. The dashed line Z shown in FIG. 9 indicates a virtual line in the case where the vertical main busbar chamber partition plate described in Embodiment 3 is provided, and is a line shown for comparing this embodiment with Embodiment 3.

[0022] However, in the case of the vertical main busbar chamber partition plate according to this embodiment, compared with Embodiment 3, it is difficult to ensure the insulation distance between the lower cable 114 and the lower vertical main busbar chamber partition plate 119. Therefore, it is necessary to change the shape of the lower cable 114, and since the number of patterns of the internal structure of the switchgear increases, the management effort may increase. Also, compared with the vertical main busbar chamber partition plate according to Embodiment 3, the number of bending processes increases and the shape becomes more complicated, so the manufacturing time increases and the processing difficulty may also increase.

[0023] Embodiment 2. FIG. 12 is a side view showing the switchgear according to Embodiment 2, and is a side view showing the switchgear to which a partition plate that expands the space of the main busbar chamber in the depth direction of the panel is attached. In the figure, the parts denoted by the same reference numerals as those in FIG. 9 indicate the same parts. As shown in FIG. 12, bending processes for expanding the space of the main busbar chamber 107 in the depth direction of the panel are provided on the vertical main busbar chamber partition plate. The upper vertical main busbar chamber partition plate 121 is subjected to bending processes as shown in FIGS. 13A and 13B. The lower vertical main busbar chamber partition plate 122 is subjected to bending processes as shown in FIGS. 14A and 14B.

[0024] FIG. 13A is a side view showing the upper vertical main busbar chamber partition plate, FIG. 13B is a perspective view showing the upper vertical main busbar chamber partition plate, and it is a figure corresponding to the G part in FIG. 12. In FIGS. 13A and 13B, the upper vertical main busbar chamber partition plate 121 is provided with a fifth vertical portion 121a extending in the panel height direction, a first inclined portion 121b inclined in the panel depth direction, a sixth vertical portion 121c extending in the panel height direction, and a fifth horizontal portion 121d extending in the panel depth direction. That is, the upper vertical main busbar chamber partition plate 121 is configured by connecting the fifth vertical portion 121a, the first inclined portion 121b inclined in the panel depth direction, the sixth vertical portion 121c, and the fifth horizontal portion 121d in the direction toward the panel depth. FIG. 14A is a side view showing the lower vertical main busbar chamber partition plate, FIG. 14B is a perspective view showing the lower vertical main busbar chamber partition plate, and it is a figure corresponding to the H part in FIG. 12. In FIGS. 14A and 14B, the lower vertical main busbar chamber partition plate 122 is provided with a sixth horizontal portion 122a extending in the panel depth direction, a seventh vertical portion 122b extending in the panel height direction, a second inclined portion 122c inclined in the panel depth direction, and an eighth vertical portion 122d extending in the panel height direction. That is, the lower vertical main busbar chamber partition plate 122 is configured by connecting the eighth vertical portion 122d, the second inclined portion 122c inclined in the panel depth direction, the seventh vertical portion 122b, and the sixth horizontal portion 122a in the direction toward the panel depth.

[0025] In the case of the vertical main busbar chamber partition plate according to the present embodiment, since the space of the main busbar chamber 107 can be expanded as compared with the case where the vertical main busbar chamber partition plate described in Embodiment 3 is provided later, the workability during maintenance and inspection is further improved. The dashed line Z shown in FIG. 12 indicates a virtual line in the case where the vertical main busbar chamber partition plate described in Embodiment 3 is provided, and it is a line shown for comparing the present embodiment with Embodiment 3. However, in the case of the vertical main busbar chamber partition plate according to the present embodiment, since there is no margin in the insulation distance between the lower cable 114 and the lower vertical main busbar chamber partition plate 122, fine adjustment is required during assembly. Further, compared with the vertical main busbar chamber partition plate according to Embodiment 3, the number of bending processes increases, the shape becomes complicated, and furthermore, high processing accuracy is required, so the manufacturing time increases and the difficulty of processing may also increase.

[0026] Embodiment 3. FIG. 15 is a side view showing a switchgear according to Embodiment 3, and is a side view showing a switchgear to which a partition plate that expands the space of the main busbar chamber in the depth direction of the panel is attached. FIG. 15 shows the switchgear when energized. In the figure, parts denoted by the same reference numerals as those in FIG. 9 indicate the same parts. As shown in FIG. 15, bending is provided on the vertical main busbar chamber partition plate so as to expand the space of the main busbar chamber 107 in the depth direction of the panel. The upper vertical main busbar chamber partition plate 131 is subjected to bending as shown in FIGS. 16A and 16B. The lower vertical main busbar chamber partition plate 132 is subjected to bending as shown in FIGS. 17A and 17B.

[0027] FIG. 16A is a side view showing the upper vertical main busbar chamber partition plate, and FIG. 16B is a perspective view showing the upper vertical main busbar chamber partition plate, and corresponds to the J portion in FIG. 15. In FIGS. 16A and 16B, the upper vertical main busbar chamber partition plate 131 is provided with a ninth vertical portion 131a extending in the panel height direction, a third inclined portion 131b inclined in the depth direction of the panel, and a seventh horizontal portion 131c extending in the depth direction of the panel. That is, the upper vertical main busbar chamber partition plate 131 is configured by connecting the ninth vertical portion 131a, the third inclined portion 131b inclined in the depth direction of the panel, and the seventh horizontal portion 131c in the depth direction of the panel. Fig. 17A is a side view showing the lower vertical main busbar chamber partition plate, and Fig. 17B is a perspective view showing the lower vertical main busbar chamber partition plate, which corresponds to the K portion in Fig. 15. In Figs. 17A and 17B, the lower vertical main busbar chamber partition plate 132 is provided with an eighth horizontal portion 132a extending in the depth direction of the panel, a fourth inclined portion 132b inclined in the depth direction of the panel, and a tenth vertical portion 132c extending in the height direction of the panel. That is, the lower vertical main busbar chamber partition plate 132 is configured by connecting the tenth vertical portion 132c, the fourth inclined portion 132b inclined in the depth direction of the panel, and the eighth horizontal portion 132a in the direction toward the depth of the panel.

[0028] Fig. 18 is a side view showing the switchgear according to Embodiment 3, showing the switchgear during maintenance and inspection work. In Fig. 18, maintenance and inspection work is being performed by removing the upper vertical main busbar chamber partition plate 131. By installing the vertical main busbar chamber partition plate in this way, the accessibility to the inside of the main busbar chamber 107 is improved, and the workability during maintenance and inspection is enhanced. Also, compared with Embodiments 1 and 2, the number of bending processes is reduced and the shape becomes simpler, so the manufacturing time is decreased and the difficulty of processing is also decreased.

[0029] According to the above Embodiments 1 to 3, by providing a bending process for expanding the space of the main busbar chamber in the depth direction of the switchgear on the main busbar chamber partition plate, the insulation distance between the conductor, which is the energized part, and the main busbar chamber partition plate can be ensured without increasing the outer dimensions of the switchgear. Furthermore, since the space of the main busbar chamber can be expanded, the accessibility to the main busbar chamber is improved, and the workability during maintenance and inspection is also improved. For example, the conductor and the like become more visible, and the inspection of parts can be performed without using a hand mirror or the like. Also, in the main busbar connection work with adjacent switchgears, the number of parts to be removed can be reduced.

[0030] As described above in Embodiments 1 to 3, various forms have been described for the case where a bending process for expanding the space of the main busbar chamber 107 in the depth direction of the panel is provided on the vertical main busbar chamber partition plate. However, the present invention is not limited to these cases. That is, for a switchgear having a main busbar chamber partition plate, any shape may be used as long as a bending process of a shape for expanding the space of the main busbar chamber is performed with respect to the depth direction of the switchgear.

[0031] Embodiment 4. FIG. 19 is a perspective view showing an upper vertical main busbar chamber partition plate according to Embodiment 4, and FIG. 20 is a perspective view showing a lower vertical main busbar chamber partition plate according to Embodiment 4. In FIG. 19, the shape of the upper vertical main busbar chamber partition plate 141 itself is the same as that shown in Embodiment 3. In FIG. 19, the upper vertical main busbar chamber partition plate 141 is provided with a ninth vertical portion 141a, a third inclined portion 141b, and a seventh horizontal portion 141c. Further, a plurality of slits 1411 are provided. In FIG. 20, the lower vertical main busbar chamber partition plate 142 is provided with an eighth horizontal portion 142a, a fourth inclined portion 142b, and a tenth vertical portion 142c. Further, a plurality of slits 1422 are provided.

[0032] As shown in FIGS. 19 and 20, slits 1411 and 1422 are provided in the vertical main busbar chamber partition plate. Since the vertical main busbar chamber partition plate according to the present embodiment has a larger surface area than the conventional vertical main busbar chamber partition plate, more ventilation slits can be provided than the conventional vertical main busbar chamber partition plate, and the ventilation area increases. Therefore, the heat dissipation performance in the main busbar chamber can be improved, and the performance against the temperature rise of the main busbar can be ensured even when the energized current increases. In FIGS. 19 and 20, the case where slits are provided in the upper vertical main busbar chamber partition plate and the lower vertical main busbar chamber partition plate shown in Embodiment 3 has been described. However, slits may be provided in the upper vertical main busbar chamber partition plate and the lower vertical main busbar chamber partition plate shown in Embodiments 1 and 2.

[0033] Embodiment 5. FIG. 21 is a side view showing the switch gear according to Embodiment 5, and the parts denoted by the same reference numerals as in FIG. 9 in the figure indicate the same parts. In FIG. 21, the main bus bar 181 of the R phase is attached at the tip of the support member 181a. The main bus bar 182 of the S phase is attached at the tip of the support member 182a. The main bus bar 183 of the T phase is attached at the tip of the support member 183a. Note that the main bus bar 181 of the R phase, the main bus bar 182 of the S phase, and the main bus bar 183 of the T phase each extend from the front surface side to the back surface side of the paper surface.

[0034] As shown in FIG. 21, by moving the position of the main bus bar 182 of the S phase in the depth direction C of the panel compared to the case of FIG. 15, it is possible to reduce the heat transfer from the main bus bar 182 of the S phase to the main bus bar 181 of the R phase and the main bus bar 183 of the T phase. That is, it is possible to reduce the influence of the heat from the main bus bar 182 of the S phase. By expanding the space of the main bus bar chamber 107 in this way, the position of the main bus bar 182 of the S phase can be moved in the depth direction C of the panel of the switch gear. That is, when viewed from the side of the switch gear, the main bus bar 181 of the R phase, the main bus bar 182 of the S phase, and the main bus bar 183 of the T phase can be arranged in a structure that is not in a straight line in the panel height direction B, so that the heat transfer (influence) from the conductor below each can be reduced.

[0035] Also, the phase-to-phase distance between the main bus bar 181 of the R phase and the main bus bar 182 of the S phase increases, and further, the phase-to-phase distance between the main bus bar 182 of the S phase and the main bus bar 183 of the T phase increases. Therefore, when a short-circuit current flows, the electromagnetic force received by each main bus bar and the support member can be reduced. That is, since the force (electromagnetic force) applied to the conductor constituting the main bus bar and the support member is reduced, the number of support members can be reduced, or the strength of the conductor and the support member can be decreased.

[0036] In the conventional structure, when moving the position of the main busbar of the S phase in the depth direction C of the panel, it was difficult to ensure the insulation distance between the vertical main busbar chamber partition plate and the main busbar. However, as shown in the present embodiment, by adopting a structure such as the upper vertical main busbar chamber partition plate 131 and the lower vertical main busbar chamber partition plate 132, the position of the main busbar of the S phase can be extended in the depth direction C of the panel. In FIG. 21, the case where the position of the main busbar 182 of the S phase is moved in the depth direction C in the structure of FIG. 15 has been described. However, the position of the main busbar 182 of the S phase may be moved in the depth direction C in the structures of FIGS. 9 and 12.

[0037] Although various exemplary embodiments and examples are described in the present application, the various features, aspects, and functions described in one or more of the embodiments are not limited to the application of a specific embodiment, but are applicable to the embodiments alone or in various combinations. Therefore, countless variations not illustrated are envisioned within the scope of the technology disclosed in the present specification. For example, it includes the case of deforming, adding, or omitting at least one component, and further, the case of extracting at least one component and combining it with the components of other embodiments.

[0038] Hereinafter, aspects of the present disclosure will be appended and described collectively.

[0039] (Appended Note 1) A housing, A main busbar chamber disposed within the housing and having a main busbar wired therein, An upper horizontal main busbar chamber partition plate disposed above the main busbar chamber in the panel height direction, A lower horizontal main busbar chamber partition plate disposed below the main busbar chamber in the panel height direction, An upper vertical main busbar chamber partition plate located above the main busbar chamber in the panel height direction for partitioning the main busbar chamber in the depth direction, A lower vertical main busbar chamber partition plate located below the main busbar chamber in the panel height direction for partitioning the main busbar chamber in the depth direction, A switchgear in which the upper vertical main busbar chamber partition plate and the lower vertical main busbar chamber partition plate are bent so as to expand the space of the main busbar chamber in the depth direction of the panel. (Appendix 2) The upper vertical main busbar chamber partition plate is configured by connecting a ninth vertical portion, a third inclined portion inclined in the depth direction of the panel, and a seventh horizontal portion in the direction toward the depth of the panel, and The lower vertical main busbar chamber partition plate is configured by connecting a tenth vertical portion, a fourth inclined portion inclined in the depth direction of the panel, and an eighth horizontal portion in the direction toward the depth of the panel. The switchgear according to Appendix 1. (Appendix 3) The upper vertical main busbar chamber partition plate is configured by connecting a first vertical portion, a first horizontal portion, a second vertical portion, and a second horizontal portion in the direction toward the depth of the panel, and The lower vertical main busbar chamber partition plate is configured by connecting a fourth vertical portion, a fourth horizontal portion, a third vertical portion, and a third horizontal portion in the direction toward the depth of the panel. The switchgear according to Appendix 1. (Appendix 4) The upper vertical main busbar chamber partition plate is configured by connecting a fifth vertical portion, a first inclined portion inclined in the depth direction of the panel, a sixth vertical portion, and a fifth horizontal portion in the direction toward the depth of the panel, and The lower vertical main busbar chamber partition plate is configured by connecting an eighth vertical portion, a second inclined portion inclined in the depth direction of the panel, a seventh vertical portion, and a sixth horizontal portion in the direction toward the depth of the panel. The switchgear according to Appendix 1. (Appendix 5) The switchgear according to any one of Appendices 1 to 4, wherein slits are provided in the upper vertical main busbar chamber partition plate and the lower vertical main busbar chamber partition plate. (Appendix 6) A plurality of the main busbars are arranged in the main busbar chamber, and The switchgear according to any one of Appendices 1 to 5, wherein the plurality of main busbars are configured not to be arranged in a straight line in the panel height direction.

Description of Symbols

[0040] 101 Housing, 107 Main Busbar Chamber, 108 Main Busbar, 116 Upper Horizontal Main Busbar Chamber Partition Plate, 117 Lower Horizontal Main Busbar Chamber Partition Plate, 118, 121, 131 Upper Vertical Main Busbar Chamber Partition Plates, 119, 122, 132 Lower Vertical Main Busbar Chamber Partition Plates, 1411, 1422 Slits.

Claims

1. A housing, A main bus bar chamber disposed within the housing and having main bus bars wired therein, An upper horizontal main bus bar chamber partition plate disposed above the main bus bar chamber in the panel height direction, A lower horizontal main bus bar chamber partition plate disposed below the main bus bar chamber in the panel height direction, An upper vertical main bus bar chamber partition plate located above the main bus bar chamber in the panel depth direction for partitioning the main bus bar chamber, A lower vertical main bus bar chamber partition plate located below the main bus bar chamber in the panel depth direction for partitioning the main bus bar chamber, and A switchgear in which the upper vertical main bus bar chamber partition plate and the lower vertical main bus bar chamber partition plate are bent so as to expand the space of the main bus bar chamber in the panel depth direction.

2. The upper vertical main bus bar chamber partition plate is configured by connecting a ninth vertical portion, a third inclined portion inclined in the panel depth direction, and a seventh horizontal portion in the direction of the panel depth, and The lower vertical main bus bar chamber partition plate is configured by connecting a tenth vertical portion, a fourth inclined portion inclined in the panel depth direction, and an eighth horizontal portion in the direction of the panel depth. The switchgear according to claim 1.

3. The upper vertical main bus bar chamber partition plate is configured by connecting a first vertical portion, a first horizontal portion, a second vertical portion, and a second horizontal portion in the direction of the panel depth, and The lower vertical main bus bar chamber partition plate is configured by connecting a fourth vertical portion, a fourth horizontal portion, a third vertical portion, and a third horizontal portion in the direction of the panel depth. The switchgear according to claim 1.

4. The upper vertical main bus bar chamber partition plate is configured by connecting a fifth vertical portion, a first inclined portion inclined in the panel depth direction, a sixth vertical portion, and a fifth horizontal portion in the direction of the panel depth, and The lower vertical main bus bar chamber partition plate is configured by connecting an eighth vertical portion, a second inclined portion inclined in the panel depth direction, a seventh vertical portion, and a sixth horizontal portion in the direction of the panel depth. The switchgear according to claim 1.

5. The switchgear according to claim 1, wherein slits are provided in the upper vertical main bus bar chamber partition plate and the lower vertical main bus bar chamber partition plate.

6. A plurality of the main bus bars are arranged in the main bus bar chamber, and The switchgear according to any one of claims 1 to 5, wherein the plurality of main buses are configured not to be arranged in a straight line in the board height direction.

Images