JP2010213532A - Switchgear - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a switchgear cannot be reduced in size because the length of a main circuit for the portion of one circuit is long and there are many portions which require assured insulation distance. <P>SOLUTION: The switchgear includes a three-phase buss line 11 in which respective phases are arrayed in vertical direction, a breaker 12 which is arranged parallel to the three-phase bus line 11 and in which respective phases are arrayed in vertical direction so as to face respective phases of the three-phase bus line 11, a primary side connection body 13 which is connected to the phases of the breaker 12 respectively and in which each phase of the breaker 12 is connected to each phase of the three-phase bus line 11, a secondary side connection body 16 which is provided to the phases of the breaker 12 respectively and is configured shorter than the primary side connection body 13, and an external line connection conductor 17 which is arrayed parallel to the three-phase bus line 11 and in which one side is connected to the secondary side connection body 16 arrayed in vertical direction respectively while the other side is connected to an external line cable. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a switch gear that houses a drawer device such as a drawer-type circuit breaker, and more particularly to a configuration of a main circuit portion.

  Conventional switchgear configurations generally have the following two structures. The first structure is a horizontal arrangement of the bus bar at the center of the switch gear in the height direction, and a fixed frame for storing the drawer type vacuum circuit breaker in the vertical direction across the bus bar. Is done. The terminals of the fixed frame are usually fixed in the order of R, S, and T phases from the left, and the primary side (power supply side) terminal and the bus are connected by a branch conductor. Moreover, it connects with the conductor from the terminal of the secondary side (load side) of this fixed frame to the external line cable connection point provided in the back surface side.

  In the second structure, a bus bar is horizontally arranged at the upper or lower part of the switch gear in the height direction, and a fixed frame for accommodating a draw-out type vacuum circuit breaker is stacked below or above the bus bar. Be placed. The terminals of the fixed frame are usually fixed in the order of R, S, and T phases from the left, and the primary side (power supply side) terminal and the bus are connected by a branch conductor. Moreover, it connects with the conductor from the terminal of the secondary side (load side) of this fixed frame to the external cable connection point provided in the lower side or side surface side of the fixed frame.

  The structure of both switch gears is that two circuits are accommodated on one side by arranging two stages of fixed frames for accommodating the pull-out type vacuum circuit breaker. It is difficult to reduce the height dimension. In other words, the board height is determined by the vacuum circuit breaker and the fixed frame.

  In addition, the busbars are arranged horizontally, whereas the vacuum circuit breaker and the terminal of the fixed frame that accommodates the vacuum circuit breaker are arranged perpendicularly to the R, S, and T phases from the left. A branch conductor is required to connect the primary terminal of the frame. Furthermore, the conductor is routed from the secondary terminal of the fixed frame to the external cable connection point. The longer the branch conductor and the length of the conductor, the higher the main circuit resistance, the greater the heat loss during energization, and the area where the conductor is connected needs to ensure an insulation distance between phases or between the ground. For this reason, the portion cannot be reduced.

  FIG. 22 and FIG. 23 show a similar structure to the above-described second conventional structure. The horizontal bus 5 is arranged in the horizontal direction above the switch gear in the height direction, and these horizontal buses are arranged. The drawer unit 3 (corresponding to a fixed frame) that houses the circuit breaker body 2 is arranged in a three-tiered structure below the circuit board 5, and each horizontal bus 5 is connected to each vertical conductor 9 by a branch conductor 10. Each of the vertical conductors 9 is connected to the power supply side lead terminal 4A at the rear part of the drawer unit 3, and the load side lead terminal 4B at the rear part of the lead unit 3 is connected to the load side cable 7 via the current transformer 6. An insulation distance must be ensured between the vertical conductor 9 and the load side lead terminal 4B at the rear of the lead unit 3.

JP-A-4-42710

  The conventional switchgear described above has a vacuum circuit breaker from the left to the R, S, T phase and busbars, with the busbar arranged in the state of securing the insulation distance in the order of R, S, T phases in the horizontal direction. It is arranged perpendicular to. In order to connect this vacuum circuit breaker to the main circuit, a fixed frame is required. The primary side (power supply side) terminal fixed to the fixed frame and the bus are connected by a branch conductor. Further, the secondary side (load side) terminal of the fixed frame and the external cable connection terminal are connected by a conductor. As a result, a vacuum circuit breaker can be connected to the fixed frame, and a main circuit for one circuit from the bus bar to the external cable through the vacuum circuit breaker is formed. Therefore, since the main circuit length for this one circuit is long and there are many portions where it is necessary to secure an insulation distance, there is a problem that the switchgear cannot be reduced.

  In addition, since the main circuit length for one circuit is long and there are many portions that need to secure an insulation distance, a large number of circuits, for example, four circuits or more can be accommodated without greatly changing the outer dimensions of the switchgear. There is a problem that switchgear cannot be manufactured.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a switchgear that can reduce the size of the apparatus.

  The switchgear according to the present invention has a three-phase bus in which each phase is arranged in a vertical direction, and is arranged in parallel with the three-phase bus, and each phase is arranged in a vertical direction so as to face each phase of the three-phase bus. Each of the circuit breakers, the primary connection body that connects each phase of the circuit breaker and each phase of the three-phase bus, and each phase of the circuit breaker, respectively. A secondary side connection body configured shorter than the primary side connection body, and arranged in parallel with the three-phase bus, and connected to each of the secondary side connection bodies arranged in a vertical direction on one side; The other side is provided with the outside line connection conductor connected to the outside line cable.

  Further, a three-phase bus in which each phase is arranged in a vertical direction, a breaker in which each phase is arranged in a vertical direction so as to be opposed to each phase of the three-phase bus, arranged parallel to the three-phase bus, Provided on each phase of the circuit breaker, and connected to each phase of the circuit breaker and each phase of the three-phase bus, respectively, and provided on each phase of the circuit breaker, the primary side A secondary side connection body configured shorter than the connection body, and one side connected to the secondary side connection body arranged in parallel with the three-phase bus, and the other side is connected to the three-phase bus. And an outside line connecting conductor that is bent in a direction orthogonal to the outside line and connected to the outside line cable.

  Also, a three-phase bus in which each phase is arranged in a vertical direction, and a first blocking in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus in parallel with the three-phase bus A first primary-side connection body that is provided in each phase of the first circuit breaker and connects each phase of the first circuit breaker and each phase of the three-phase bus, and A first secondary connection body provided in each phase of one circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, with one side in a vertical direction A first external line connecting conductor connected to each of the arranged first secondary connection bodies, the other side being connected to an external cable, and the first circuit breaker parallel to the three-phase bus and Arranged opposite each other via the three-phase bus, each phase is perpendicular to each phase of the three-phase bus A second primary circuit breaker, and a second primary circuit that is provided in each phase of the second circuit breaker and connects each phase of the second circuit breaker and each phase of the three-phase bus. Side connection body, a second secondary connection body provided in each phase of the second circuit breaker and configured to be shorter than the second primary side connection body, and arranged in parallel with the three-phase bus And a second external line connecting conductor having one side connected to each of the second secondary-side connectors arranged in the vertical direction and the other side connected to an external cable.

A three-phase bus in which each phase is arranged in a vertical direction, and a first circuit breaker arranged in parallel with the three-phase bus and in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus A first primary-side connection body provided in each phase of the first circuit breaker and connecting each phase of the first circuit breaker and each phase of the three-phase bus; and A first secondary connection body provided in each phase of the circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, one side being arranged in the vertical direction A first external line connecting conductor connected to each of the first secondary connection bodies, the other side being bent in a direction orthogonal to the three-phase bus, and connected to an external cable; and the three-phase bus Parallel to the first circuit breaker and the three-phase bus via the three-phase bus, and each phase of the three-phase bus A second circuit breaker in which each phase is arranged in a vertical direction so as to correspond to each phase of the second circuit breaker, and each phase of the second circuit breaker and each phase of the three-phase bus A second primary side connection body that is respectively connected to each phase of the second circuit breaker, and is configured to be shorter than the second primary side connection body, An external cable that is arranged in parallel to the three-phase bus, one side is connected to each of the second secondary-side connectors arranged in the vertical direction, and the other side is bent in a direction perpendicular to the three-phase bus. And a second external line connecting conductor connected to the.

  Also, a three-phase bus in which each phase is arranged in a vertical direction, and a first blocking in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus in parallel with the three-phase bus A first primary-side connection body that is provided in each phase of the first circuit breaker and connects each phase of the first circuit breaker and each phase of the three-phase bus, and A first secondary connection body provided in each phase of one circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, with one side in a vertical direction A first external line connecting conductor connected to each of the arranged first secondary side connected bodies and having the other side connected to an external cable; and an extension direction of the three-phase bus in parallel with the three-phase bus Arranged in the same row direction as the first circuit breaker, and each phase is perpendicular to each phase of the three-phase bus. And a second circuit breaker arranged in each of the second circuit breakers and connected to each phase of the second circuit breaker and each phase of the three-phase bus. A primary side connection body, a second secondary side connection body provided in each phase of the second circuit breaker and configured to be shorter than the second primary side connection body, and parallel to the three-phase bus And a second external line connecting conductor that is connected to each of the second secondary connection bodies arranged on one side in the vertical direction and connected to the external cable on the other side.

Also, a three-phase bus in which each phase is arranged in a vertical direction, and a first blocking in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus in parallel with the three-phase bus A first primary-side connection body that is provided in each phase of the first circuit breaker and connects each phase of the first circuit breaker and each phase of the three-phase bus; A first secondary connection body provided in each phase of one circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus; A first external line connecting conductor connected to each of the arranged first secondary connection bodies, the other side bent in a direction orthogonal to the three-phase bus, and connected to an external cable; Parallel to the phase bus and arranged in the same row direction as the first circuit breaker in the extending direction of the three-phase bus, the three-phase bus A second circuit breaker in which each phase is arranged in a vertical direction so as to face each phase of the second circuit breaker, and each phase of the second circuit breaker, and each phase of the second circuit breaker and the three phases A second primary side connection body that connects each phase of the busbar, and a second secondary body that is provided in each phase of the second circuit breaker and is configured to be shorter than the second primary side connection body Side connection bodies are connected in parallel to the three-phase buses, one side is connected to each of the second secondary side connection bodies arranged in the vertical direction, and the other side is folded in a direction perpendicular to the three-phase bus bars. And a second external line connecting conductor which is bent and connected to the external line cable.

The switchgear according to the present invention has a three-phase bus in which each phase is arranged in the vertical direction, and is arranged in parallel to the three-phase bus, and each phase is arranged in the vertical direction so as to face each phase of the three-phase bus. A circuit breaker, a primary connection body that connects each phase of the circuit breaker and each phase of the three-phase bus, and each phase of the circuit breaker. Provided, and connected to each of the secondary side connection body configured to be shorter than the primary side connection body, and the secondary side connection body arranged in parallel with the three-phase bus, and one side being arranged in the vertical direction, By adopting a configuration in which the other side includes an external line connecting conductor connected to an external line cable, a switch gear capable of reducing the size of the apparatus can be obtained.

It is a perspective view which shows the structure of the main circuit module in the switchgear concerning Embodiment 1 of this invention. It is a left view which shows the principal part of the switchgear concerning Embodiment 1 of this invention. It is a right view which shows the principal part of the switchgear concerning Embodiment 1 of this invention. It is a top view which shows the conductor for an external connection in the switchgear concerning Embodiment 1 of this invention. It is a perspective view which shows the switchgear concerning Embodiment 1 of this invention.

It is a perspective view which shows the structure of the main circuit module in the switchgear concerning Embodiment 2 of this invention. It is a top view which shows the external connection conductor in the switchgear concerning Embodiment 2 of this invention. It is a perspective view which shows the switchgear concerning Embodiment 2 of this invention.

It is a perspective view which shows the switchgear concerning Embodiment 3 of this invention. It is a left view which shows the principal part of the 1st main circuit module in the switchgear concerning Embodiment 3 of this invention. It is a right view which shows the principal part of the 1st main circuit module in the switchgear concerning Embodiment 3 of this invention. It is a left view which shows the principal part of the 2nd main circuit module in the switchgear concerning Embodiment 3 of this invention. It is a right view which shows the principal part of the 2nd main circuit module in the switchgear concerning Embodiment 3 of this invention. It is a top view which shows the 1st conductor for an external connection in the switchgear concerning Embodiment 3 of this invention. It is a top view which shows the 2nd conductor for an external connection in the switchgear concerning Embodiment 3 of this invention.

It is a perspective view which shows the switchgear concerning Embodiment 5 of this invention. It is a left view which shows the principal part of the 2nd main circuit module in the switchgear concerning Embodiment 5 of this invention. It is a right view which shows the principal part of the 2nd main circuit module in the switchgear concerning Embodiment 5 of this invention. It is a top view which shows the 2nd conductor for external connection in the switchgear concerning Embodiment 5 of this invention.

It is a perspective view which shows the switchgear concerning Embodiment 7 of this invention. It is a perspective view which shows the switchgear concerning Embodiment 8 of this invention. It is a block diagram which shows the conventional switchgear. It is sectional drawing in the EE line of the conventional FIG.

Embodiment 1.
Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a perspective view showing the configuration of the main circuit module in the switchgear according to the first embodiment. FIG. 2 is a left side view showing a main part of the switchgear according to Embodiment 1 of the present invention. FIG. 3 is a right side view showing a main part of the switchgear according to Embodiment 1 of the present invention. FIG. 4 is a plan view showing the external connection conductor in the switchgear according to Embodiment 1 of the present invention. FIG. 5 is a perspective view showing the configuration of the switchgear that houses the main circuit modules per circuit in Embodiment 1 of the present invention. Further, the drawing shows, as an example, a case where an external cable (not shown) is drawn from the bottom of the panel.

  In these drawings, reference numeral 11 denotes a three-phase bus in which the phases 11a, 11b, and 11c are arranged in the vertical direction. In order to shorten the length of the three-phase bus 11 in the panel, the phases 11a, 11b, 11c is arranged in the horizontal direction in the board width direction, for example, in the order of R phase 11a, S phase 11b, T phase 11c from the top. 12 is arranged in parallel with the three-phase bus 11 and is perpendicular to the R-phase 12a, S-phase 12b, and T-phase 12c from the top so as to face the R-phase 11a, S-phase 11b, and T-phase 11c of the three-phase bus 11. For example, a circuit breaker (hereinafter referred to as a vacuum circuit breaker) composed of a vacuum circuit breaker. 13 are provided in the R phase 12a, S phase 12b, and T phase 12c of the vacuum circuit breaker 12, respectively. The R phase 12a, S phase 12b, T phase 12c of the vacuum circuit breaker 12 and the R phases 11a, S of the three-phase bus 11 are provided. A primary side (power supply side) connection body that connects the phase 11b and the T phase 11c, respectively, and a contactor 14 that is directly connected to the R phase 11a, the S phase 11b, and the T phase 11c of the three-phase bus 11; The R-phase 12a, the S-phase 12b, and the T-phase 12c of the circuit breaker 12 and the primary side conductor 15 that connects the respective contacts 14 are configured.

  16 is a secondary side (load side) connection body provided in the R phase 12a, S phase 12b, and T phase 12c of the vacuum circuit breaker 12 and configured to be shorter than the primary side connection body 13, and from the top, the R phase, They are arranged in the vertical direction in the order of S phase and T phase. Reference numeral 17 denotes an external line connecting conductor arranged in parallel with the three-phase bus 11 and arranged in the vertical direction in the order of the R phase 17a, the S phase 17b, and the T phase 17c from the top. The one side R phase 17a1 and the S phase 17b1 , T phase 17c1 is connected to the R phase, S phase, T phase of the secondary side connection body 16 arranged in the vertical direction, respectively, and the other side R phase 17a2, S phase 17b2, T phase 17c2 is connected to an unillustrated external cable. Connected.

  Further, the other side R phase 17a2, S phase 17b2, and T phase 17c2 of the outer line connecting conductor 17 can have the same length, but the figure shows, as an example, the other side of the outer line connecting conductor 17 positioned on the uppermost side. The side R phase 17a2 is configured to be the longest, the S phase 17b2 is configured to be shorter than the R phase 17a2, and the T phase 17c2 is configured to be shorter than the S phase 17b2, and in the extending direction of the three-phase bus 11 The position of the external cable connecting portion 18 is shifted. That is, the position of the external cable connecting portion 18 is not made the same in the vertical direction. In addition, in order to measure the current flowing through the main circuit conductor in which the main circuit module is configured in this way, an instrument current transformer (not shown) or an instrument current transformer and a zero-phase current transformer are integrally cast. The combined current transformer (not shown) is arranged in the vicinity of the other-side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the external line connecting conductor 17.

Next, the operation will be described. The three-phase bus 11 is arranged in the vertical direction from the top in the order of the R-phase 11a, S-phase 11b, and T-phase 11c, the vacuum circuit breaker 12 is arranged in parallel with the three-phase bus 11, and the R-phase 11a of the three-phase bus 11 , S phase 11b and T phase 11c are arranged in the vertical direction in the order of R phase 12a, S phase 12b and T phase 12c from above. The R side 12a, S phase 12b, and T phase 12c of the vacuum circuit breaker 12 and the R phase 11a, S phase 11b, and T phase 11c of the three-phase bus 11 are composed of a contact 14 and a primary side conductor 15. Each of the connectors 13 is connected. A secondary-side connection body 16 and a three-phase bus that are configured to be shorter than the primary-side connection body 13 and are provided with R-phase, S-phase, and T-phase in the R-phase 12a, S-phase 12b, and T-phase 12c of the vacuum circuit breaker 12, respectively. 11, one side R phase 17a1, S phase 17b1, and T phase 17c1 of the external line connecting conductor 17 arranged in the vertical direction in the order of R phase 17a, S phase 17b, and T phase 17c from above. Connect each one. The other-side R phase 17a2, S phase 17b2, and T phase 17c2 of the external line connecting conductor 17 are connected to an external cable (not shown).

  As described above, according to the first embodiment, the number of branch conductors as in the above-described conventional apparatus is reduced, and the conductor length from the busbar to the vacuum circuit breaker is minimized by shortening the conductor length to the outsideline cable connection portion. The main circuit length for one circuit can be minimized, and a switchgear that can reduce the size of the device can be obtained. Moreover, the heat loss generated in the main circuit can be significantly reduced.

  Further, the other side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the outer-line connecting conductor 17 can have the same length, but in the first embodiment, FIGS. 4A to 4C are also used. As is apparent, the R phase 17a2 on the other side of the outermost line connecting conductor 17 located on the uppermost side is configured to be the longest, the S phase 17b2 is configured to be shorter than the R phase 17a2, and the T phase 17c2 is configured to be more than the S phase 17b2. By further shortening the configuration, the position of the external cable connection 18 is shifted in the extending direction of the three-phase bus 11 so that the position of the external cable connection 18 is not the same in the vertical direction. Thereby, the other side R-phase 17a2, S-phase 17b2, T-phase 17c2 of the outer-line connecting conductor 17 and the unillustrated external line cable can be connected very easily, and the external line cable can be connected extremely efficiently. Can be improved.

  Incidentally, FIG. 5 shows the configuration of the switchgear in which the main circuit modules per circuit according to the first embodiment of the present invention are housed, but such main circuit modules are stacked in a plurality of stages in the vertical direction. It may be.

Embodiment 2.
A second embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a perspective view showing the configuration of the main circuit module in the switchgear according to the second embodiment. FIG. 7 is a plan view showing an external connection conductor in a switchgear according to Embodiment 2 of the present invention. FIG. 8 is a perspective view showing the configuration of a switchgear that houses main circuit modules per circuit according to Embodiment 2 of the present invention. Further, the drawing shows, as an example, a case where an external cable (not shown) is drawn from the bottom of the panel.

  In these drawings, 11 is a three-phase bus, 11a, 11b, and 11c are R-phase, S-phase, and T-phase of the three-phase bus 11, 12 is a vacuum circuit breaker, 12a, 12b, and 12c are R-phase of the vacuum circuit breaker 12. , S phase, T phase, 13 is a primary side connection body, 14 is a contact, 15 is a primary side conductor, and 16 is a secondary side connection body 16, which are vertical in the order of R phase, S phase, and T phase from above. Arranged in the direction.

  Reference numeral 17 denotes an external line connecting conductor arranged in parallel with the three-phase bus 11 and arranged in the vertical direction in the order of the R phase 17a, the S phase 17b, and the T phase 17c from the top. The one side R phase 17a1 and the S phase 17b1 , T phase 17c1 is connected to the R phase, S phase, T phase of the secondary side connection body 16 arranged in the vertical direction, respectively, and the other side R phase 17a2, S phase 17b2, T phase 17c2 are connected to the three-phase bus 11 It is bent in the orthogonal direction, that is, on the vacuum circuit breaker 12 side, and connected to an external cable (not shown).

Further, the other side R phase 17a2, S phase 17b2, and T phase 17c2 of the outer line connecting conductor 17 can have the same length, but the figure shows, as an example, the other side of the outer line connecting conductor 17 positioned on the uppermost side. The side R phase 17a2 is configured to be the longest, the S phase 17b2 is configured to be shorter than the R phase 17a2, and the T phase 17c2 is configured to be shorter than the S phase 17b2, and is orthogonal to the three-phase bus 11 In FIG. 5, the position of the external cable connecting portion 18 is shifted. That is, the position of the external cable connecting portion 18 is not made the same in the vertical direction. In addition, in order to measure the current flowing through the main circuit conductor in which the main circuit module is configured in this way, an instrument current transformer (not shown) or an instrument current transformer and a zero-phase current transformer are integrally cast. The combined current transformer (not shown) is arranged in the vicinity of the other-side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the external line connecting conductor 17.

  Next, the operation will be described. The three-phase bus 11 is arranged in the vertical direction from the top in the order of the R-phase 11a, S-phase 11b, and T-phase 11c, the vacuum circuit breaker 12 is arranged in parallel with the three-phase bus 11, and the R-phase 11a of the three-phase bus 11 , S phase 11b and T phase 11c are arranged in the vertical direction in the order of R phase 12a, S phase 12b and T phase 12c from above. The R side 12a, S phase 12b, and T phase 12c of the vacuum circuit breaker 12 and the R phase 11a, S phase 11b, and T phase 11c of the three-phase bus 11 are composed of a contact 14 and a primary side conductor 15. Each of the connectors 13 is connected. A secondary-side connection body 16 and a three-phase bus that are configured to be shorter than the primary-side connection body 13 and are provided with R-phase, S-phase, and T-phase in the R-phase 12a, S-phase 12b, and T-phase 12c of the vacuum circuit breaker 12, respectively. 11, one side R phase 17a1, S phase 17b1, and T phase 17c1 of the external line connecting conductor 17 arranged in the vertical direction in the order of R phase 17a, S phase 17b, and T phase 17c from above. Connect each one. The other side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the outer-line connecting conductor 17 bent toward the vacuum circuit breaker 12 side are connected to an external cable (not shown) in a direction orthogonal to the three-phase bus 11. The

  As described above, according to the first embodiment, the number of branch conductors as in the above-described conventional apparatus is reduced, and the conductor length from the busbar to the vacuum circuit breaker is minimized by shortening the conductor length to the outsideline cable connection portion. The main circuit length for one circuit can be minimized, and a switchgear that can reduce the size of the device can be obtained. Moreover, the heat loss generated in the main circuit can be significantly reduced.

  Further, by bending the other side R phase 17a2, S phase 17b2 and T phase 17c2 of the outer line connecting conductor 17 in the direction orthogonal to the three-phase bus 11, that is, in the vacuum circuit breaker 12 side, it is not in the panel width direction. The board can be arranged in the board depth direction, and the board width can be reduced.

  Further, the other-side R phase 17a2, S phase 17b2, and T phase 17c2 of the external line connecting conductor 17 can have the same length, but in the first embodiment, from FIGS. 7 (a) to (c). As is clear, the R phase 17a2 on the other side of the outermost line connecting conductor 17 located on the uppermost side is configured to be the longest, the S phase 17b2 is configured to be shorter than the R phase 17a2, and the T phase 17c2 is configured to be the S phase. Since the configuration is shorter than 17b2, the position of the external cable connecting portion 18 is shifted in the direction orthogonal to the three-phase bus 11, that is, the depth direction of the panel, and the position of the external cable connecting portion 18 is not the same in the vertical direction. I am doing so. Thereby, the other side R-phase 17a2, S-phase 17b2, T-phase 17c2 of the outer-line connecting conductor 17 and the unillustrated external line cable can be connected very easily, and the external line cable can be connected extremely efficiently. Can be improved.

    Incidentally, FIG. 8 shows the configuration of the switchgear in which the main circuit modules per circuit in the second embodiment of the present invention are housed, but such main circuit modules are stacked in a plurality of stages in the vertical direction. It may be.

Embodiment 3.
A third embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a perspective view showing the configuration of the switchgear according to the third embodiment. FIG. 10 is a left side view showing the main part of the first main circuit module in the switchgear according to Embodiment 3 of the present invention. FIG. 11 is a right side view showing the main part of the first main circuit module in the switchgear according to Embodiment 3 of the present invention. FIG. 12 is a left side view showing the main part of the second main circuit module in the switchgear according to Embodiment 3 of the present invention. FIG. 13: is a right view which shows the principal part of the 2nd main circuit module in the switchgear concerning Embodiment 3 of this invention. FIG. 14 is a plan view showing a first external connection conductor in a switchgear according to Embodiment 3 of the present invention. FIG. 15 is a plan view showing a second external connection conductor in a switchgear according to Embodiment 3 of the present invention. Further, the drawing shows, as an example, a case where an external cable (not shown) is drawn from the bottom of the panel.

  In these drawings, reference numeral 21 denotes a three-phase bus in which the phases 21a, 21b, and 21c are arranged in the vertical direction. In order to shorten the length of the three-phase bus 21 itself in the panel, each phase 21a, 21b, 21c is arranged in the horizontal direction in the board width direction, for example, in the order of R phase 21a, S phase 21b, T phase 21c from the top. 22 is arranged in parallel with the three-phase bus 21 and is perpendicular to the R-phase 22a, S-phase 22b, and T-phase 22c in this order from the top so as to face the R-phase 21a, S-phase 21b, and T-phase 21c of the three-phase bus 21. 1 is a first circuit breaker (hereinafter referred to as a first vacuum circuit breaker), for example, composed of a vacuum circuit breaker. 23 are respectively provided in the R phase 22a, S phase 22b, and T phase 22c of the first vacuum circuit breaker 22, and the R phase 22a, S phase 22b, T phase 22c and the three-phase bus 21 of the first vacuum circuit breaker 22 are provided. The first primary side (power supply side) connection body for connecting the R phase 21a, S phase 21b, and T phase 21c, respectively, directly to the R phase 21a, S phase 21b, and T phase 21c of the three-phase bus 21, respectively. The first primary conductor 24 that connects the first contactor 24 to be connected, the R phase 22a, the S phase 22b, the T phase 22c of the first vacuum circuit breaker 22, and the first contactors 24, respectively. It is comprised by.

  Reference numeral 26 denotes a first secondary side (load side) connection provided in the R phase 22a, S phase 22b, and T phase 22c of the first vacuum circuit breaker 22 and configured to be shorter than the first primary side connection body 23. Which are arranged in the vertical direction in the order of R phase, S phase and T phase from above.

  Reference numeral 27 denotes a first external line connecting conductor arranged in parallel with the three-phase bus 21 and arranged in the vertical direction in the order of the R phase 27a, the S phase 27b, and the T phase 27c from the top. The S phase 27b1 and the T phase 27c1 are respectively connected to the R phase, the S phase, and the T phase of the first secondary side connection body 26 arranged in the vertical direction, and the other side R phase 27a2, the S phase 27b2, and the T phase 27c2. Is bent in the direction orthogonal to the three-phase bus 21, that is, on the first vacuum circuit breaker 22 side, and is connected to an external cable (not shown).

  Further, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outside line connecting conductor 27 can be the same length, but the figure shows, as an example, the first outside line located on the uppermost side. The R phase 27a2 on the other side of the connecting conductor 27 is configured to be the longest, the S phase 27b2 is configured to be shorter than the R phase 27a2, and the T phase 27c2 is configured to be shorter than the S phase 27b2. In the direction orthogonal to the bus 21, the position of the first external cable connecting portion 28 is shifted. That is, the position of the first outside line cable connection portion 28 is not made the same in the vertical direction. In order to measure the current flowing through the main circuit conductor in which the first main circuit module is configured in this way, an instrument current transformer (not shown), an instrument current transformer, and a zero-phase current transformer are provided. An integrally cast composite type current transformer (not shown) is disposed in the vicinity of the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first external line connecting conductor 27.

32 is arranged parallel to the three-phase bus 21 and opposite to each other via the first vacuum circuit breaker 22 and the three-phase bus 21, and is relative to the R-phase 21a, S-phase 21b, and T-phase 21c of the three-phase bus 21. A second circuit breaker (hereinafter referred to as a second vacuum circuit breaker) composed of, for example, a vacuum circuit breaker arranged in the vertical direction in the order of the R phase 32a, the S phase 32b, and the T phase 32c from above. 33 are respectively provided in the R phase 32a, S phase 32b, and T phase 32c of the second vacuum circuit breaker 32, and the R phase 32a, S phase 32b, T phase 32c of the second vacuum circuit breaker 32 and the three-phase bus 21 2nd primary side (power supply side) connection body respectively connecting R phase 21a, S phase 21b, and T phase 21c, and directly connecting R phase 21a, S phase 21b, and T phase 21c of three-phase bus 21 respectively. A second contact 34 to be connected;
The R-phase 32a, S-phase 32b, and T-phase 32c of the vacuum circuit breaker 32 and the second primary conductor 35 connecting the second contacts 34 respectively.

  Reference numeral 36 denotes a second secondary side (load side) connection provided in the R phase 32a, S phase 32b, and T phase 32c of the second vacuum circuit breaker 32, and configured to be shorter than the second primary side connection body 33. Which are arranged in the vertical direction in the order of R phase, S phase and T phase from above.

  37 is a second external connection conductor arranged in parallel with the three-phase bus 21 and arranged in the vertical direction in the order of R phase 37a, S phase 37b, and T phase 37c (not shown) from above. The one side R phase 37a1, the S phase 37b1, and the T phase 37c1 are respectively connected to the R phase, S phase, and T phase of the second secondary side connection body 36 arranged in the vertical direction, and the other side R phase 37a2, The S phase 37b2 and the T phase 37c2 are bent in a direction orthogonal to the three-phase bus 21, that is, on the second vacuum circuit breaker 32 side, and connected to an unillustrated external cable.

  In addition, the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second outside line connecting conductor 37 may have the same length, but the figure shows, as an example, the second outside line located on the uppermost side. The R phase 37a2 on the other side of the connecting conductor 37 is configured to be the longest, the S phase 37b2 is configured to be shorter than the R phase 37a2, and the T phase 37c2 is configured to be shorter than the S phase 37b2. In the direction orthogonal to the bus 21, the position of the second external cable connecting portion 38 is shifted. That is, the position of the second external line cable connection portion 38 is not made the same in the vertical direction. In order to measure the current flowing through the main circuit conductor in which the second main circuit module is configured in this way, an instrument current transformer (not shown), an instrument current transformer, and a zero-phase current transformer are provided. An integrally cast composite current transformer (not shown) is disposed in the vicinity of the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second external line connecting conductor 37.

    Next, the operation will be described. The three-phase bus 21 is arranged in the vertical direction from the top in the order of the R-phase 21a, S-phase 21b, and T-phase 21c, and the first vacuum circuit breaker 22 is arranged in parallel with the three-phase bus 21 and The R phase 22a, the S phase 22b, and the T phase 22c are arranged in the vertical direction from the top so as to face the R phase 21a, the S phase 21b, and the T phase 21c. The R phase 22a, S phase 22b, T phase 22c of the first vacuum circuit breaker 22 and the R phase 21a, S phase 21b, T phase 21c of the three-phase bus 21 are connected to the first contactor 24 and the first primary side. The first primary side connection body 23 composed of the conductor 25 is connected to each other. The first two-sided connection body 23 is shorter than the first primary-side connection body 23, and the R-phase 22a, S-phase 22b, and T-phase 22c of the first vacuum circuit breaker 22 are provided with R-phase, S-phase, and T-phase, respectively. One side R of the first outer-line connecting conductor 27 arranged in parallel with the secondary connection body 26 and the three-phase bus 21 and arranged in the vertical direction from the top in the order of the R phase 27a, the S phase 27b, and the T phase 27c. Phase 27a1, S phase 27b1, and T phase 27c1 are connected to each other. The other side R-phase 27a2, S-phase 27b2, and T-phase 27c2 of the first outer-line connecting conductor 27 bent toward the first vacuum circuit breaker 22 are shown in the direction orthogonal to the three-phase bus 21. Do not connect to external cable.

A second vacuum circuit breaker 32 is disposed parallel to the three-phase bus 21 and opposite to the first vacuum circuit breaker 22 via the three-phase bus 21, and the R phases 21 a and S of the three-phase bus 21 are arranged. R phase 32a, S phase 32b, and T phase 32c are arranged in the vertical direction from the top so as to face phase 21b and T phase 21c. The R phase 32a, S phase 32b, T phase 32c of the second vacuum circuit breaker 32 and the R phase 21a, S phase 21b, T phase 21c of the three-phase bus 21 are connected to the second contact 34 and the second primary side. The second primary side connecting bodies 33 constituted by the conductors 35 are connected to each other. The second primary connector 33 is configured to be shorter than the second primary connection body 33, and the R phase 32a, the S phase 32b, and the T phase 32c of the second vacuum circuit breaker 32 are respectively provided with an R phase, an S phase, and a T phase. One side R of second external line connecting conductors 37 arranged in parallel with secondary side connection body 36 and three-phase bus 21 and arranged in the vertical direction in the order of R phase 37a, S phase 37b, and T phase 37c from above. Phase 37a1, S phase 37b1, and T phase 37c1 are connected to each other. The other side R-phase 37a2, S-phase 37b2, and T-phase 37c2 of the second outer-line connecting conductor 37 bent toward the second vacuum circuit breaker 32 are shown in the direction orthogonal to the three-phase bus 21. Do not connect to external cable.

  As described above, according to the third embodiment, the number of branch conductors as in the above-described conventional device is reduced, and the conductor length from the busbar to the vacuum circuit breaker is minimized by shortening the conductor length to the outsideline cable connection portion. The main circuit length for one circuit can be minimized, and a switchgear that can reduce the size of the device can be obtained. Moreover, the heat loss generated in the main circuit can be significantly reduced.

  The other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second outer line connecting conductor 37 are the same. In this third embodiment, the R phase 27a2 on the other side of the first outer line connecting conductor 27 located on the uppermost side and the other of the second outer line connecting conductor 37 are also possible. The side R phase 37a2 is configured to be the longest, the S phase 27b2 and the S phase 37b2 are configured to be shorter than the R phase 27a2 and the R phase 37a2, and the T phase 27c2 and 37c2 are configured to be shorter than the S phase 27b2 and the S phase 37b2, respectively. As a result, in the direction orthogonal to the three-phase bus 21, the positions of the first external line cable connection part 28 and the second external line cable connection part 38 are shifted so that the first external line Buru connection 28 and the position of the second external cable connection 38 is prevented from becoming the same in the vertical direction. Thus, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second outer line connecting conductor 37 are illustrated. Thus, the connection work with the outside line cable can be performed very easily, and the connection work of the outside line cable can be improved remarkably efficiently.

  Further, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outside line connecting conductor 27 and the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second outside line connecting conductor 37 are respectively three. By bending in the direction orthogonal to the phase bus 21, that is, the first vacuum circuit breaker 22 and the second vacuum circuit breaker 32 side, it can be arranged not in the panel width direction but in the panel depth direction. Reduction can be achieved.

  By the way, in this Embodiment 3, as is clear from FIG. 9, the first vacuum circuit breaker 22, the first primary side connection body 23, the first secondary side connection body 26, and the first outside line connection. The first main circuit module composed of the conductor 27, the second vacuum circuit breaker 32, the second primary connection body 33, the second secondary connection body 36, and the second external line connection conductor 37. The second main circuit module composed of is a main circuit module having the same configuration, arranged opposite to each other in the front-rear direction across the same three-phase bus 21, and connected to the same three-phase bus 21. By adopting the structure, the position in the height direction of the first outside line cable connection portion 28 and the second outside line cable connection portion 38 is determined depending on the required terminal distance size of the outside line cable. Can be made smaller than the conventional device described above. .

  In this way, it goes without saying that it is effective in the case of reducing the board width in an arrangement that allows access from the front and rear direction of the board. In addition, when a main circuit module of two circuits is housed on one surface of the switchgear, the first main circuit module and the second main circuit module are connected to the same three-phase bus 21 from the front-rear direction. In addition to being able to reduce the height of the switchgear, it is also possible to reduce the depth dimension because there is no useless conductor.

Embodiment 4.
In the third embodiment described above, the other-side R-phase 27a2, S-phase 27b2, T-phase 27c2 of the first outer-line connecting conductor 27 and the other-side R-phase 37a2 of the second outer-line connecting conductor 37 are used. The direction in which the S phase 37b2 and the T phase 37c2 are orthogonal to the three-phase bus 21 respectively, that is, the first phase
However, the present invention is not limited to this, and in the fourth embodiment of the present invention, the first external line connecting conductor is described. 27, the other-side R-phase 27a2, S-phase 27b2, T-phase 27c2 and the other-side R-phase 37a2, S-phase 37b2, and T-phase 37c2 of the second outer-line connecting conductor 37 are respectively connected to the outside lines shown in the first embodiment. Of course, the conductor 17 may be extended in the extending direction of the three-phase bus 21 in the same manner as the other-side R phase 17a2, S phase 17b2, and T phase 17c2.

Embodiment 5.
Embodiment 5 of the present invention will be described with reference to FIGS. FIG. 16 is a perspective view showing the configuration of the switchgear according to the third embodiment. FIG. 17 is a left side view showing the main part of the second main circuit module in the switchgear according to Embodiment 5 of the present invention. FIG. 18 is a right side view showing the main part of the second main circuit module in the switchgear according to Embodiment 5 of the present invention. FIG. 19 is a plan view showing a second external connection conductor in a switchgear according to Embodiment 5 of the present invention. Further, the drawing shows, as an example, a case where an external cable (not shown) is drawn from the bottom of the panel.

  In these drawings, reference numeral 21 denotes a three-phase bus in which the phases 21a, 21b, and 21c are arranged in the vertical direction. In order to shorten the length of the three-phase bus 21 itself in the panel, each phase 21a, 21b, 21c is arranged in the horizontal direction in the board width direction, for example, in the order of R phase 21a, S phase 21b, T phase 21c from the top. 22 is arranged in parallel with the three-phase bus 21 and is perpendicular to the R-phase 22a, S-phase 22b, and T-phase 22c in this order from the top so as to face the R-phase 21a, S-phase 21b, and T-phase 21c of the three-phase bus 21. The first circuit breakers are arranged in the form of a vacuum circuit breaker, for example. 23 are respectively provided in the R phase 22a, S phase 22b, and T phase 22c of the first vacuum circuit breaker 22, and the R phase 22a, S phase 22b, T phase 22c and the three-phase bus 21 of the first vacuum circuit breaker 22 are provided. The first primary side (power supply side) connection body for connecting the R phase 21a, S phase 21b, and T phase 21c, respectively, directly to the R phase 21a, S phase 21b, and T phase 21c of the three-phase bus 21, respectively. The first primary conductor 24 that connects the first contactor 24 to be connected, the R phase 22a, the S phase 22b, the T phase 22c of the first vacuum circuit breaker 22, and the first contactors 24, respectively. It is comprised by.

  Reference numeral 26 denotes a first secondary side (load side) connection provided in the R phase 22a, S phase 22b, and T phase 22c of the first vacuum circuit breaker 22 and configured to be shorter than the first primary side connection body 23. Although not shown in the figure, they are arranged in the vertical direction in the order of R phase, S phase, and T phase from the top.

  Reference numeral 27 denotes a first external line connecting conductor arranged in parallel with the three-phase bus 21 and arranged in the vertical direction in the order of the R phase 27a, the S phase 27b, and the T phase 27c from the top. The S phase 27b1 and the T phase 27c1 are respectively connected to the R phase, the S phase, and the T phase of the first secondary side connection body 26 arranged in the vertical direction, and the other side R phase 27a2, the S phase 27b2, and the T phase 27c2. Is bent in the direction orthogonal to the three-phase bus 21, that is, on the first vacuum circuit breaker 22 side, and is connected to an external cable (not shown).

Further, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outside line connecting conductor 27 can be the same length, but the figure shows, as an example, the first outside line located on the uppermost side. The R phase 27a2 on the other side of the connecting conductor 27 is configured to be the longest, the S phase 27b2 is configured to be shorter than the R phase 27a2, and the T phase 27c2 is configured to be shorter than the S phase 27b2. In the direction orthogonal to the bus 21, the position of the first external cable connecting portion 28 is shifted. That is, the position of the first outside line cable connection portion 28 is not made the same in the vertical direction. In order to measure the current flowing through the main circuit conductor in which the first main circuit module is configured in this way, an instrument current transformer (not shown), an instrument current transformer, and a zero-phase current transformer are provided. An integrally cast composite current transformer (not shown) is provided on the other side R-phase 27a2, S-phase 2 of the first outer-line connecting conductor 27.
7b2 and T-phase 27c2.

  42 is arranged in parallel with the three-phase bus 21 and in the same direction as the first vacuum circuit breaker 22 in the extending direction of the three-phase bus 21, and is relative to the R phase 21a, S phase 21b, and T phase 21c of the three-phase bus 21. A second circuit breaker (hereinafter, referred to as a second vacuum circuit breaker) composed of, for example, a vacuum circuit breaker arranged in the vertical direction in the order of the R phase 42a, the S phase 42b, and the T phase 42c from above. 43 are respectively provided in the R phase 42a, S phase 42b, and T phase 42c of the second vacuum circuit breaker 42, and the R phase 42a, S phase 42b, T phase 42c of the second vacuum circuit breaker 42 and the three-phase bus 21 2nd primary side (power supply side) connection body respectively connecting R phase 21a, S phase 21b, and T phase 21c, and directly connecting R phase 21a, S phase 21b, and T phase 21c of three-phase bus 21 respectively. The second contactor 44 connected, the R phase 42a, the S phase 42b, the T phase 42c of the second vacuum circuit breaker 42, and the second contactors 34 respectively connecting the second contacts 34. It is comprised by.

  46 is provided in each of the R phase 42a, S phase 42b, and T phase 42c of the second vacuum circuit breaker 42, and is connected to a second secondary side (load side) connection shorter than the second primary side connection body 43. Which are arranged in the vertical direction in the order of R phase, S phase and T phase from above.

  47 is a second external line connecting conductor arranged in parallel with the three-phase bus 21 and arranged in the vertical direction from the top in the order of the R phase 47a, S phase 47b, and T phase 47c. The S-phase 47b1 and the T-phase 47c1 are respectively connected to the R-phase, S-phase, and T-phase of the second secondary-side connector 46 arranged in the vertical direction, and the other-side R-phase 47a2, S-phase 47b2, and T-phase 47c2 are connected. Is bent in the direction orthogonal to the three-phase bus 21, that is, on the second vacuum circuit breaker 42 side, and connected to an external cable (not shown).

  In addition, the other side R phase 47a2, S phase 47b2, and T phase 47c2 of the second outside line connecting conductor 47 may have the same length, but the figure shows, as an example, the second outside line located on the uppermost side. The R phase 47a2 on the other side of the connecting conductor 47 is configured to be the longest, the S phase 47b2 is configured to be shorter than the R phase 47a2, and the T phase 47c2 is configured to be shorter than the S phase 47b2. In the direction orthogonal to the bus 21, the position of the second external cable connecting portion 48 is shifted. That is, the position of the second outside line cable connection portion 48 is not made the same in the vertical direction. In order to measure the current flowing through the main circuit conductor in which the second main circuit module is configured in this way, an instrument current transformer (not shown), an instrument current transformer, and a zero-phase current transformer are provided. An integrally cast composite type current transformer (not shown) is arranged in the vicinity of the other side R phase 47a2, S phase 47b2, and T phase 47c2 of the second external line connecting conductor 47.

    Next, the operation will be described. The three-phase bus 21 is arranged in the vertical direction from the top in the order of the R-phase 21a, S-phase 21b, and T-phase 21c, and the first vacuum circuit breaker 22 is arranged in parallel with the three-phase bus 21 and The R phase 22a, the S phase 22b, and the T phase 22c are arranged in the vertical direction from the top so as to face the R phase 21a, the S phase 21b, and the T phase 21c. The R phase 22a, S phase 22b, T phase 22c of the first vacuum circuit breaker 22 and the R phase 21a, S phase 21b, T phase 21c of the three-phase bus 21 are connected to the first contactor 24 and the first primary side. The first primary side connection body 23 composed of the conductor 25 is connected to each other. The first two-sided connection body 23 is shorter than the first primary-side connection body 23, and the R-phase 22a, S-phase 22b, and T-phase 22c of the first vacuum circuit breaker 22 are provided with R-phase, S-phase, and T-phase, respectively. One side R of the first outer-line connecting conductor 27 arranged in parallel with the secondary connection body 26 and the three-phase bus 21 and arranged in the vertical direction from the top in the order of the R phase 27a, the S phase 27b, and the T phase 27c. Phase 27a1, S phase 27b1, and T phase 27c1 are connected to each other. The other side R-phase 27a2, S-phase 27b2, and T-phase 27c2 of the first outer-line connecting conductor 27 bent toward the first vacuum circuit breaker 22 are shown in the direction orthogonal to the three-phase bus 21. Do not connect to external cable.

  The second vacuum circuit breaker 42 is arranged in parallel with the three-phase bus 21 and in the same direction as the first vacuum circuit breaker 22 in the extending direction of the three-phase bus 21, and the R phases 21 a and S of the three-phase bus 21 are arranged. The R phase 42a, the S phase 42b, and the T phase 42c are arranged in the vertical direction from the top so as to face the phase 21b and the T phase 21c. The R phase 42a, S phase 42b, T phase 42c of the second vacuum circuit breaker 42 and the R phase 21a, S phase 21b, T phase 21c of the three-phase bus 21 are connected to the second contactor 44 and the second primary side. The second primary side connection body 43 constituted by the conductor 45 is connected to each other. The second primary connector 43 is shorter than the second primary connection body 43, and the R phase 42a, the S phase 42b, and the T phase 42c of the second vacuum circuit breaker 42 are provided with an R phase, an S phase, and a T phase, respectively. One side R of second external line connecting conductor 47 arranged in parallel with secondary side connection body 46 and three-phase bus 21 and arranged in the vertical direction in the order of R phase 47a, S phase 47b, and T phase 47c from above. Phase 47a1, S phase 47b1, and T phase 47c1 are connected to each other. The other side R-phase 47a2, S-phase 47b2, and T-phase 47c2 of the second outer-line connecting conductor 47 bent toward the second vacuum circuit breaker 42 are shown in the direction orthogonal to the three-phase bus 21. Do not connect to external cable.

  As described above, according to the fifth embodiment, the number of branch conductors as in the above-described conventional device is reduced, and the conductor length from the bus to the vacuum circuit breaker is minimized by shortening the conductor length to the external cable connection portion. The main circuit length for one circuit can be minimized, and a switchgear that can reduce the size of the device can be obtained. Moreover, the heat loss generated in the main circuit can be significantly reduced.

  The other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 47a2, S phase 47b2, and T phase 47c2 of the second outer line connecting conductor 47 are the same. In the fifth embodiment, the R phase 27a2 on the other side of the first outer line connecting conductor 27 located on the uppermost side and the other of the second outer line connecting conductor 47 are also possible. The side R phase 47a2 is configured to be the longest, the S phase 27b2 and the S phase 47b2 are configured to be shorter than the R phase 27a2 and the R phase 47a2, and the T phases 27c2 and 47c2 are configured to be shorter than the S phase 27b2 and the S phase 47b2, respectively. As a result, in the direction orthogonal to the three-phase bus 21, the positions of the first external line cable connection part 28 and the second external line cable connection part 48 are shifted, and the first external line Position of Buru connection 28 and the second external cable connection 48 is prevented from becoming the same in the vertical direction. Thus, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 47a2, S phase 47b2, and T phase 47c2 of the second outer line connecting conductor 47 are illustrated. Thus, the connection work with the outside line cable can be performed very easily, and the connection work of the outside line cable can be improved remarkably efficiently.

  The other side R phase 27a2, S phase 27b2 and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 47a2, S phase 47b2 and T phase 47c2 of the second outer line connecting conductor 47 are each three. By bending in the direction perpendicular to the phase bus 21, that is, the first vacuum circuit breaker 22 and the second vacuum circuit breaker 42 side, it can be arranged not in the panel width direction but in the panel depth direction. Reduction can be achieved.

  By the way, in this Embodiment 5, as is clear from FIG. 16, the first vacuum circuit breaker 22, the first primary side connection body 23, the first secondary side connection body 26, and the first outside line connection. The first main circuit module composed of the conductor 27, the second vacuum circuit breaker 42, the second primary connection body 43, the second secondary connection body 46, and the second external line connection conductor 47. Is a main circuit module having the same configuration, and is arranged in the same column direction to the left and right in the extending direction of the same three-phase bus 21 and connected to the same three-phase bus 21 respectively. Thus, since the position in the height direction of the first outside line cable connection portion 28 and the second outside line cable connection portion 48 is determined by the required terminal distance size of the outside line cable, the dimension in the height direction of the panel is determined. It can be made smaller than the conventional device described above. That.

  As described above, by arranging the two main circuit modules in the extending direction of the three-phase bus 21, it is of course effective in reducing the depth of the board in an arrangement that allows access from the same direction of the board. That's it. Further, when two circuit main circuit modules are housed on one surface of the switchgear, the first main circuit module and the second main circuit module are arranged in the same row direction on the left and right in the extending direction of the three-phase bus 21. With the structure connected to the three-phase bus 21, the panel height of the switchgear can be suppressed, and the depth dimension of the panel can be remarkably reduced only by the access from the front direction of the panel. In addition, along with these, restrictions such as elevator entry and passage to the electrical room, doors, etc. are satisfied, the carry-in performance is improved, and the construction period is shortened and the construction cost is reduced.

Embodiment 6.
In the fifth embodiment described above, the other side R phase 27a2, S phase 27b2, T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 47a2, of the second outer line connecting conductor 47 are provided. Although the case where the S phase 47b2 and the T phase 47c2 are bent in the direction orthogonal to the three-phase bus 21 respectively, that is, the first vacuum circuit breaker 22 and the second vacuum circuit breaker 42 has been described, the present invention is not limited to this. In the sixth embodiment of the present invention, the other side R phase 27a2, the S phase 27b2, the T phase 27c2 of the first outer line connecting conductor 27 and the other side R of the second outer line connecting conductor 47 are not used. The phase 47a2, the S phase 47b2, and the T phase 47c2 are arranged in the extending direction of the three-phase bus 21 in the same manner as the other-side R phase 17a2, S phase 17b2, and T phase 17c2 of the external line connecting conductor 17 shown in the first embodiment. Stretch Also may be a matter of course that.

Embodiment 7.
A seventh embodiment of the present invention will be described with reference to FIG. As is apparent from FIG. 20, in the seventh embodiment, the configuration shown in the third embodiment described above is arranged in a vertical direction in a plurality of stages, for example, in a two-stage product. Multiple circuits, for example, 4 circuits can be accommodated. With this configuration, it is possible to increase the integration efficiency per surface and reduce the installation space by reducing the number of necessary panels. Thereby, the dimension of the electric chamber itself can be reduced, and the vacant space can be used for other purposes. Alternatively, this switchgear is arranged in advance using the empty space in the electrical room, and the existing switchgear is removed and the external cable is reattached at the same time, which leads to shortening of the renewal work period.

  Further, the other side R phase 27a2, S phase 27b2, and T phase 27c2 of the first outside line connecting conductor 27 and the other side R phase 37a2, S phase 37b2, and T phase 37c2 of the second outside line connecting conductor 37 are respectively three. Although the case where it is bent in the direction orthogonal to the phase bus line 21, that is, the first vacuum circuit breaker 22 and the second vacuum circuit breaker 32 has been described, the present invention is not limited to this. In the fourth embodiment, the other side R phase 27a2, S phase 27b2, T phase 27c2 of the first outside line connecting conductor 27 and the other side R phase 37a2, S phase 37b2, T phase 37c2 of the second outside line connecting conductor 37 are used. May be extended in the extending direction of the three-phase bus 21 in the same manner as the other-side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the external line connecting conductor 17 shown in the first embodiment described above. Is

Embodiment 8.
An eighth embodiment of the present invention will be described with reference to FIG. As is clear from FIG. 21, in the eighth embodiment, the configuration shown in the fifth embodiment described above is arranged in a vertical direction in a plurality of stages, for example, in a two-stage product, on one surface of the switchgear. Multiple circuits, for example, 4 circuits can be accommodated. With this configuration, it is possible to increase the integration efficiency per surface and reduce the installation space by reducing the number of necessary panels. Thereby, the dimension of the electric chamber itself can be reduced, and the vacant space can be used for other purposes. Alternatively, this switchgear is arranged in advance using the empty space in the electrical room, and the existing switchgear is removed and the external cable is reattached at the same time, which leads to shortening of the renewal work period.

  The other side R phase 27a2, S phase 27b2 and T phase 27c2 of the first outer line connecting conductor 27 and the other side R phase 47a2, S phase 47b2 and T phase 47c2 of the second outer line connecting conductor 47 are each three. Although the case where it is bent in the direction orthogonal to the phase bus 21, that is, the first vacuum circuit breaker 22 and the second vacuum circuit breaker 42 has been described, the present invention is not limited to this. In the sixth aspect, the other side R phase 27a2, the S phase 27b2, and the T phase 27c2 of the first outside line connecting conductor 27 and the other side R phase 47a2, the S phase 47b2, and the T phase 47c2 of the second outside line connecting conductor 47. May be extended in the extending direction of the three-phase bus 21 in the same manner as the other-side R-phase 17a2, S-phase 17b2, and T-phase 17c2 of the external line connecting conductor 17 shown in the first embodiment described above. Is

  The present invention relates to a switchgear that houses a drawer device such as a drawer-type circuit breaker, and is suitable for realizing a reduction in the size of the apparatus.

DESCRIPTION OF SYMBOLS 11 Three-phase bus line 12 Vacuum circuit breaker 13 Primary side connection body 16 Secondary side connection body 17 External line connection conductor 21 Three-phase bus line 22 1st vacuum circuit breaker 23 1st primary side connection body 26 1st secondary side Connector 27 First external line connection conductor 32 Second vacuum circuit breaker 33 Second primary side connection body 36 Second secondary side connection body 37 Second external line connection conductor 42 Second vacuum circuit breaker 43 2nd primary side connection body 46 2nd secondary side connection body 47 2nd conductor for external line connection

Claims (8)

  A three-phase bus in which each phase is arranged in a vertical direction; a breaker in which each phase is arranged in a vertical direction so as to be opposed to each phase of the three-phase bus; Provided on each phase of the circuit breaker, and connected to each phase of the circuit breaker and each phase of the three-phase bus, respectively, and provided on each phase of the circuit breaker, the primary side connection body A secondary-side connection body configured to be shorter, and each of the secondary-side connection bodies arranged in parallel with the three-phase buses and arranged on one side in the vertical direction, and the other side is connected to an external cable. A switchgear characterized by comprising an external line connecting conductor.   A three-phase bus in which each phase is arranged in a vertical direction; a breaker in which each phase is arranged in a vertical direction so as to be opposed to each phase of the three-phase bus; Provided on each phase of the circuit breaker, and connected to each phase of the circuit breaker and each phase of the three-phase bus, respectively, and provided on each phase of the circuit breaker, the primary side connection body A secondary-side connecting body configured to be shorter, and arranged in parallel with the three-phase bus, one side connected to each of the secondary-side connecting bodies arranged in a vertical direction, and the other side orthogonal to the three-phase bus A switchgear comprising a conductor for connecting an outside line that is bent in a direction to be connected to an outside line cable.     A three-phase bus in which each phase is arranged in a vertical direction, and a first circuit breaker arranged in parallel with the three-phase bus and in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus A first primary connection body that is provided in each phase of the first circuit breaker and connects each phase of the first circuit breaker and each phase of the three-phase bus; and A first secondary connection body provided in each phase of the circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, one side being arranged in the vertical direction A first external line connecting conductor connected to each of the first secondary side connecting bodies and having the other side connected to an external line cable; parallel to the three-phase bus; and the first circuit breaker and the three Each phase is arranged in the vertical direction so as to be opposed to each phase of the three-phase bus. And a second primary side connection that is provided in each phase of the second circuit breaker and connects each phase of the second circuit breaker and each phase of the three-phase bus. Body, a second secondary connection body that is provided in each phase of the second circuit breaker and configured to be shorter than the second primary connection body, and is arranged in parallel with the three-phase bus, A switchgear comprising: a second external line connecting conductor having one side connected to each of the second secondary connection bodies arranged in the vertical direction and the other side connected to an external line cable. A three-phase bus in which each phase is arranged in a vertical direction, and a first circuit breaker arranged in parallel with the three-phase bus and in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus A first primary-side connection body provided in each phase of the first circuit breaker and connecting each phase of the first circuit breaker and each phase of the three-phase bus; and A first secondary connection body provided in each phase of the circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, one side being arranged in the vertical direction A first external line connecting conductor connected to each of the first secondary connection bodies, the other side being bent in a direction orthogonal to the three-phase bus, and connected to an external cable; and the three-phase bus Parallel to the first circuit breaker and the three-phase bus via the three-phase bus, and each phase of the three-phase bus A second circuit breaker in which each phase is arranged in a vertical direction so as to correspond to each phase of the second circuit breaker, and each phase of the second circuit breaker and each phase of the three-phase bus A second primary side connection body that is respectively connected to each phase of the second circuit breaker, and is configured to be shorter than the second primary side connection body, An external cable that is arranged in parallel to the three-phase bus, one side is connected to each of the second secondary-side connectors arranged in the vertical direction, and the other side is bent in a direction perpendicular to the three-phase bus. And a second external line connecting conductor connected to the switchgear. A three-phase bus in which each phase is arranged in a vertical direction, and a first circuit breaker arranged in parallel with the three-phase bus and in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus A first primary connection body that is provided in each phase of the first circuit breaker and connects each phase of the first circuit breaker and each phase of the three-phase bus; and A first secondary connection body provided in each phase of the circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, one side being arranged in the vertical direction A first external line connecting conductor connected to each of the first secondary connection bodies, the other side being connected to an external cable, and parallel to the three-phase bus and extending in the extension direction of the three-phase bus Arranged in the same row direction as the first circuit breaker, each phase is arranged in the vertical direction so as to face each phase of the three-phase bus. A second primary side that is provided in each phase of the second circuit breaker and the second circuit breaker, and connects each phase of the second circuit breaker and each phase of the three-phase bus. A second secondary side connection body provided in each phase of the connection body and the second circuit breaker and configured to be shorter than the second primary side connection body, and arranged in parallel with the three-phase bus. A switchgear comprising: a second external line connecting conductor having one side connected to each of the second secondary side connectors arranged in the vertical direction and the other side connected to an external cable. . A three-phase bus in which each phase is arranged in a vertical direction, and a first circuit breaker arranged in parallel with the three-phase bus and in which each phase is arranged in a vertical direction so as to face each phase of the three-phase bus A first primary-side connection body provided in each phase of the first circuit breaker and connecting each phase of the first circuit breaker and each phase of the three-phase bus; and A first secondary connection body provided in each phase of the circuit breaker and configured to be shorter than the first primary connection body, and arranged in parallel with the three-phase bus, one side being arranged in the vertical direction A first external line connecting conductor connected to each of the first secondary connection bodies, the other side being bent in a direction orthogonal to the three-phase bus, and connected to an external cable; and the three-phase bus In parallel with the first circuit breaker in the direction of extension of the three-phase bus, and each of the three-phase bus Each of the phases of the second circuit breaker and each of the three-phase buses is provided in each phase of the second circuit breaker. A second primary-side connection body that connects the phases, and a second secondary-side connection body that is provided in each phase of the second circuit breaker and that is configured to be shorter than the second primary-side connection body And connected in parallel to the three-phase bus, one side is connected to each of the second secondary side connectors arranged in the vertical direction, the other side is bent in a direction perpendicular to the three-phase bus, A switchgear comprising a second external line connecting conductor connected to the external line cable.   The switch according to any one of claims 1 to 6, wherein a main circuit module of one circuit constituted by each component is arranged in a plurality of layers in a vertical direction in each of the above claims. gear.   8. The switchgear according to claim 1, wherein the other side of each of the external line connecting conductors is configured to be shorter from the top in the vertical direction.

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