JP7154702B2 - switchboard - Google Patents

Description

The present invention relates to switchboards.

A distribution board generally has a main breaker on the upper side of the board and branch breakers on the left and right in two rows below it. In the case of a switchboard with a bottom-side incoming wire, a method is known in which an incoming wire connection terminal block is provided below the branch breaker, and the primary side terminal of the main breaker and the incoming wire connection terminal block are connected by an electric wire. In this case, three-phase electric wires must be arranged on the side of the cabinet, so that the wiring space is narrowed and the workability is deteriorated. In particular, when the capacity of the main breaker is large, the size of the electric wire is large and it is not easy to bend it at a right angle. is done.

JP-A-11-164416

By the way, if the conductor supporting device described in Patent Document 1 is used, there is a problem that a space for providing the conductor supporting device is required above the main breaker, resulting in an increase in the size of the cabinet.

The inventor of this case tried to solve the problem by earnestly studying this point. SUMMARY OF THE INVENTION An object of the present invention is to provide a switchboard that has good wiring workability and that suppresses an increase in the size of the cabinet.

In order to solve the above-mentioned problems, a switchboard is provided with a main breaker having a primary side terminal at the top and a secondary side terminal at the bottom, and a line from a system power supply is input to the main breaker. The arranged bar holder is provided with an incoming wire terminal part for incoming wire from the system on the side of the main breaker, a lead bar connecting the primary side terminal of the main breaker and the incoming wire terminal part, and a partition part separating the incoming wire terminal parts. is a switchboard formed diagonally with respect to the main breaker.

Further, it is preferable that the partition portion of the bar holder is provided with an insertion hole through which the lead bar is passed.

Moreover, it is preferable that the incoming wire terminal portions are arranged so as to be shifted in the depth direction.

According to the present invention, it is possible to provide a switchboard that has good wiring workability and that suppresses an increase in the size of the cabinet.

It is the front view which showed the inside of the switchboard of embodiment. FIG. 2 is a partially enlarged view around the master breaker shown in FIG. 1; It is the perspective view which looked at the bar holder from the lower right. It is the perspective view which looked at the bar holder from the upper left. FIG. 3 is a perspective view of three lead bars attached to a bar holder; FIG. 4 is a perspective view showing the positional relationship between three lead bars when attached to a bar holder; FIG. 3 is a perspective view of a bar holder to which three lead bars are attached, viewed from the lower right; It is a perspective view showing the positional relationship of a master breaker, a bar holder, and a lead bar. FIG. 9 is a view taken along line VIII-VIII in FIG. 8; FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8; It is a perspective view showing the positional relationship of a master breaker, a bar holder, an electric wire, and a shield plate.

Modes for carrying out the invention are shown below. As can be seen from FIG. 1, the switchboard 1 of this embodiment includes a main breaker 80 having a primary side terminal 81 on the top and a secondary side terminal 82 on the bottom. Incoming line from the system power supply is performed. In addition, the switchboard 1 is provided with a bar holder 20 adjacent to the main breaker 80, and the bar holder 20 is provided with an incoming wire terminal portion 21 for incoming wire from the system on the side of the main breaker 80. . A lead bar 30 connecting the primary side terminal 81 of the main breaker 80 and the incoming wire terminal portion 21 is provided, and the partition portion 22 separating the incoming wire terminal portions 21 is formed obliquely with respect to the main breaker 80 . For this reason, it is possible to provide the switchboard 1 that has good wiring workability and suppresses an increase in the dimensions of the cabinet 10 .

In the switchboard 1 of the present embodiment, a main breaker 80 is arranged in the upper part of the cabinet 10 , and an electric wire 91 connected to a primary side terminal 81 of the main breaker 80 passes through a hole provided in the lower part of the cabinet 10 and passes through the cabinet 10 . brought from outside.

In the switchboard 1 of the embodiment, the bar holder 20 is arranged adjacent to the main breaker 80 . The bar holder 20 has an incoming wire terminal portion 21 connected to an electric wire 91 used for power supply. Moreover, the lead bar 30 which connects the primary side terminal 81 of the main breaker 80 and the incoming wire terminal part 21 is provided. Therefore, the electric wire 91 may be routed to the incoming wire terminal portion 21 without being routed to the primary side terminal 81 of the main breaker 80 .

As can be seen from FIGS. 1 and 2 , in the embodiment, the incoming wire terminal portion 21 provided on the bar holder 20 is positioned to the left of the main breaker 80 . The incoming line terminal portions 21 of the embodiment are arranged so as to line up in the vertical direction when viewed from the front. Moreover, the partition portion 22 is positioned between the incoming wire terminal portion 21 and the incoming wire terminal portion 21 in the bar holder 20 . This partition part 22 is formed so as to extend obliquely with respect to the main breaker 80 . That is, the partition 22 has different vertical positions at its left and right ends. As can be seen from FIG. 2, the partition 22 of the embodiment is formed so that the left end is positioned below the right end.

In this way, when the partition portion 22 is formed so as to extend obliquely toward the main breaker 80 , there is no need to bend the electric wire 91 at right angles in the vicinity of the portion connected to the incoming wire terminal portion 21 . The burden can be suppressed. Moreover, since there is no need to bend the wire 91 in a right angle, even if the wire 91 is thick, the space required for bending the wire 91 can be reduced. Since the electric wire 91 can be connected obliquely to the incoming wire terminal portion 21 located laterally adjacent to the main breaker 80, it is not necessary to secure a space for wiring above the main breaker 80. good. Also, the dimensions of the cabinet 10 can be suppressed.

The bar holder 20 of the embodiment is formed in a substantially L shape when viewed from the front. The bar holders 20 having such a shape are arranged along the top and sides of the main breaker 80 . In the embodiment, the bar holder 20 is fixed to the cabinet 10 by screwing.

The bar holder 20 fixed to the cabinet 10 is positioned so that the plate-shaped partition portion 22 protrudes toward the front side. A partition portion 22 is provided so as to protrude forward from the head portion. There are two partitions 22 in the embodiment, and the partitions 22 arranged in the vertical direction are formed parallel to each other when viewed from the front. The partition portion 22 suppresses the inclination of the electric wire 91 when connecting the electric wire 91 to the incoming wire terminal portion 21 , and can ensure the wiring workability of the adjacent incoming wire terminal portion 21 .

The bar holder 20 of the embodiment includes a barrier section 24 so as to partition the space above the primary side terminal 81 of the main breaker 80 . The barrier portion 24 is arranged to extend toward the front side. This barrier portion 24 is provided to prevent a secondary short circuit from occurring when the main breaker 80 is cut off due to a short circuit and arc gas is generated.

A lead bar 30 is attached to the bar holder 20 of the embodiment. The lead bar 30 serves to connect the primary side terminal 81 of the main breaker 80 and the incoming wire terminal portion 21 . In an embodiment, three lead bars 30 are attached. As can be seen from FIG. 5, each lead bar 30 is in the shape of a single plate, but each has a different shape. One end of these lead bars 30 is provided with a notch 31 for connection to the primary side terminal 81 of the main breaker 80 . As can be understood from FIGS. 6 and 7, in the embodiment, when the lead bars 30 are attached to the bar holder 20, the notches 31 of the respective lead bars 30 are adjacent to each other.

Each lead bar 30 has a notch 31 at one end and a through hole 32 at the other end into which the threaded wire terminal 21 can be inserted. Note that the lead bar 30 is also provided with a mounting hole 33 that is smaller than the through hole 32 . When fixing the lead bar 30 to the bar holder 20 , the mounting hole 33 is used to fix the lead bar 30 with a screw 92 .

As can be seen from FIGS. 6 to 9, in the embodiment, all lead bars 30 connected to the primary side terminals 81 are configured to partially overlap when viewed from the front. More specifically, the portion of the lead bar 30 fixed to the bar holder 20 that extends horizontally (to the left) from the notch portion 31 connected to the primary side terminal 81 toward the incoming line terminal portion 21 is They overlap each other in the front-rear depth direction and are configured to have the same height in the vertical direction. Therefore, each lead bar 30 can be arranged even if the space above the main breaker 80 is not so wide in the vertical direction.

6 to 8 and 10, the portions of the lead bars 30 extending in the vertical direction on the side of the main breaker 80 are also overlapped in the front-rear depth direction and left-right direction. are configured to have the same width. Therefore, each lead bar 30 can be arranged even if the space on the side of the main breaker 80 is not so wide in the left-right direction.

In the embodiment, the partition portion 22 of the bar holder 20 is provided with an insertion hole 23 through which the lead bar 30 is passed. By doing so, the partition part 22 can be formed between the incoming wire terminal part 21 and the incoming wire terminal part 21 with a relatively simple structure. In addition, since the insertion hole 23 can also serve as a guide for the lead bar 30, the work of arranging the lead bar 30 can be facilitated.

Further, in the embodiment, the incoming wire terminal portions 21 are arranged to be shifted in the depth direction. Therefore, the lead bars 30 connected to the incoming line terminal portion 21 can be arranged so as to overlap each other in a front view while avoiding a complicated shape of the lead bars 30 . Moreover, since the electric wires 91 can be arranged in this manner, the electric wires 91 can also be arranged so as to overlap each other in the depth direction, and the space required for the switchboard 1 in the left-right direction can be suppressed.

In the embodiment, the lead bar installation surface 25 on which the lead bars 30 are installed is provided such that each lead bar 30 is offset in the depth direction so that the incoming line terminal portion 21 can be arranged with the lead bars 30 shifted in the depth direction. In addition, the portion located on the side of the main breaker 80 is configured such that the installation surface protrudes toward the front side from the lower side to the upper side. Therefore, each incoming wire terminal portion 21 can be visually recognized from the front side, and connection between the incoming wire terminal portion 21 and the electric wire 91 is facilitated. In addition, it becomes easy to confirm the state in which the incoming wire terminal portion 21 and the electric wire 91 are connected.

A shield plate 93 is preferably provided in order to prevent contact with the lead bar 30 attached to the bar holder 20 and the like. In the embodiment, since the front end portions of the partition portion 22 and the barrier portion 24 are flush with each other, the flat shield plate 93 is fixed in contact with the partition portion 22 and the barrier portion 24. be able to. In the example shown in FIG. 11, the shield plate 93 is fixed to the front end portions of the partition portion 22 and the barrier portion 24 so that the lead bar 30 attached to the bar holder 20 is covered with the shield plate 93 . is doing.

Although the present invention has been described above using the embodiments as examples, the present invention is not limited to the above-described embodiments, and various aspects are possible. For example, it is possible to provide an incoming line terminal section on the right side of the main breaker.

1 switchboard 20 bar holder 21 incoming wire terminal portion 22 partition portion 23 insertion hole 30 lead bar 80 main breaker 81 primary side terminal 82 secondary side terminal

Claims (2)

A switchboard having a main breaker having a primary side terminal at the top and a secondary side terminal at the bottom, wherein a line from a system power supply is input to the main breaker, wherein a bar holder arranged adjacent to the main breaker is provided with a main breaker. Equipped with an incoming wire terminal part on the side of the breaker for incoming wire from the system, a lead bar connecting the primary side terminal of the main breaker and the incoming wire terminal part, and a partition part separating the incoming wire terminal parts at an angle to the main breaker. A switchboard with an insertion hole through which the lead bar is passed through the partition of the bar holder . 2. The switchboard according to claim 1 , wherein the incoming wire terminal portions are arranged to be shifted in the depth direction.

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