JP3410425B2 - switchboard - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for connecting a circuit breaker having a built-in switchboard with a large current capacity to a bus bar. 2. Description of the Related Art A switchboard shown in FIGS.
It is a figure which shows the conventional switchboard for generators for ships equipped with a plurality of three-phase generators. These figures show a switchboard corresponding to one generator, and switchboards corresponding to other generators are arranged side by side with the switchboard shown in FIG. 6 but are not shown. In the upper part of this switchboard, a busbar 10 which is long in the left-right direction and is a main bus in FIG. 6 is provided so as to penetrate between switchboards arranged side by side. The bus bar 10 is configured by arranging a plurality of copper strips each having a thickness of several millimeters or more in parallel for each phase so that a steady current of several thousand amps or more can be passed. It is attached so that the width of the belt is vertical. On the other hand, a circuit breaker 11 is provided below the switchboard. The breaker 11 has an input terminal 1 to which an intermediate connection plate 12 for connecting a cable from a generator is connected.
3 and a bus bar 1 via a connection bar 14 as described later.
An output terminal 15 connected to 0 is provided. The connection surface of the input side terminal 13 and the output side terminal 15 is in the vertical direction similarly to the width surface of the bus bar 10, but when viewed from above, the circuit breaker 1 is in a direction orthogonal to the longitudinal direction of the bus bar 10.
1 protrudes from the body. The connection bar 14 is formed of a plurality of parallel copper plates for each phase, and is fixed on the insulating support member 17 through the current transformer 16. The upper end of the connection bar 14 is connected to an attachment 18 having a connection surface parallel to the width surface of the bus bar 10 with a screw.
The other end of 8 is connected to the bus bar 10 with a screw. In order to connect the output terminal 15 of the circuit breaker and the bus bar 10, both of which are arranged orthogonal to each other, the circuit breaker 11 is mounted on the switchboard as described above. As shown in FIG.
The extension terminal plate 19 which is bent so as to have the connection surface 19 a parallel to the width surface of the circuit breaker 11 is attached to the output terminal 13 of the circuit breaker 11. Then, the connection surface of the attachment 18 and the connection surface 19a of the extension terminal plate are located in planes parallel to each other.
And the connection bar 14 was connected between them. As described above, conventionally, it was necessary to provide the extension terminal plate 19, so that the depth dimension (left and right direction in FIG. 5) of the switchboard could not be reduced. As shown in FIG. 7, the width of the switchboard cannot be reduced because it protrudes from the width of the circuit breaker 11, and the problem that the long and heavy bus bar 10 must be drilled because the connection bar 14 is attached via the attachment 18. was there. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to realize a switchboard which can reduce the depth dimension and the width dimension and does not need to make a hole in the busbar when connecting the circuit breaker and the busbar. [0009] To solve the above problems,
For example, the present invention relates to a switchboard,
A circuit breaker with a terminal having a connection surface in a vertical plane;
Is located above or below the switchboard and extends in the horizontal direction of the switchboard.
Both have a rectangular cross section when viewed from the side of the switchboard.
The belt-like shape is arranged so that the long side of the cross section is vertical.
And the connection plate connected to the terminal of the circuit breaker.
A relay connection terminal for connecting the connecting plate and the bus bar.
On the power board, the relay connection terminals are formed at right angles to each other.
The connection surface with the busbar and the connection surface with the connection plate
The connection surface with the busbar is one of the rectangular cross section of the busbar.
And the connection surface with the connection plate is
Arrange the relay connection terminals so that they are located in the vertical plane in the depth direction.
And the relay connection terminal is the other end of the rectangular cross section of the busbar.
The bushing cooperates with an auxiliary member arranged in contact with the short side.
Apply pressure so that the bar is pinched from above and below
It is to be attached to. In such a configuration of the present application, the connecting plate
The connection surface of the relay connection terminal to which the
All connection surfaces should be in the vertical plane in the depth direction of the switchboard,
Since the two connection surfaces are in a parallel positional relationship, a simple configuration
It can be easily connected with a connection plate. The relay connection terminal
The vertical surface, which is the connection surface with the connecting plate, and the connection surface with the busbar
Simple right angles to each other with only horizontal planes
It can be configured by shape. In addition, the relay connection terminal
Terminals and auxiliary members are arranged so that the bus bar is sandwiched from above and below
And apply pressure from above and below to attach it to the busbar
Holes for inserting screws into the busbar
Do not need. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to an embodiment shown in FIGS. 3 and 4, as in the conventional switchboard, a bus bar 1 serving as a main bus that is long in the left-right direction and an input-side terminal 2 having a connection surface extending vertically and projecting in the depth direction of the switchboard. And a circuit breaker 4 having an output side terminal 3 are provided on the upper and lower parts of the switchboard, respectively. The bus bar 1 of each phase has the same width and is composed of four copper strips, and these copper strips are installed in parallel such that the respective width faces are vertical and the width faces each other. . The bus bar 1 has a relay connection terminal 5 made of copper having a U-shaped cross section when viewed from the back of the switchboard.
The mounting auxiliary member 6 is disposed on the upper side, and both are mounted so as to sandwich the plurality of bus bars 1 with thick screws as shown in FIGS. The horizontal contact surface 5a of the relay connection terminal 5 thus mounted is in contact with the thick end surfaces of the group of bus bars 1 with a large pressure, so that the contact resistance is low and the Joule heat which is harmful even when a large current flows. Does not occur. The vertical connection surfaces 5b of both legs are in a vertical plane parallel to the output terminal 3 of the circuit breaker 4. The output terminal 3 of the circuit breaker of each phase and the bus bar 1
Is made of a plurality of copper plates provided in parallel, and both ends thereof are connected to the output terminal 3 and the vertical connection surface 5b of the connection terminal with screws, and are arranged linearly. The connection bar 7 is divided into a lower portion 7a, an intermediate portion 7b, and an upper portion 7c for attaching the through-type current transformer 8, and is connected to each other by screws. Further, in FIG. 3, the bus bars 1 of the R phase and the T phase are arranged so as to be separated from the center S phase to the left and right.
An extension plate 9 is provided on the relay connection terminal 5 so that the relay connection terminal 5 can be connected to the relay connection terminal 5. In the switchboard described above, the circuit breaker 4 is provided at the lower part and the bus bar 1 is provided at the upper part, but may be reversed. Although the cross-section of the relay connection terminal is U-shaped, the cross-section of the bus bar 1 may be L-shaped, laterally U-shaped, prismatic, rectangular, or the like. The section does not have to be U-shaped as long as the section includes a horizontal plane in contact with and a vertical plane in a vertical plane parallel to the output terminal 3 of the circuit breaker 4. Although the embodiments of the present invention have been described above, the embodiments of the present invention disclosed above are not limited to the embodiments described above.
This is merely an example, and the scope of the present invention is not limited to the above embodiment of the present invention. The scope of the present invention is defined by the appended claims, and is intended to include all modifications within the scope and meaning equivalent to the appended claims. The present invention is implemented in the form described above.
Terminal having a connection surface in the vertical plane in the depth direction of the switchboard
And a power distribution system located above or below the circuit breaker
A strip-shaped bus bar extending in the left and right direction of the board and a breaker terminal
Connecting plate to be connected to, and connecting plate and busbar
In a switchboard with a relay connection terminal,
Connection surface of the relay connection terminal and the connection surface of the relay connection terminal
Since they are arranged in the same vertical plane,
The board may have a simple configuration, and there is no need to provide an extension terminal board extending in the depth direction from the terminal of the circuit breaker, so that the depth and width of the switchboard can be reduced.
Also, the relay connection terminal is formed by connecting the relay connection terminal and the auxiliary member.
Arrange the subbar so as to sandwich it from above and below and apply pressure from above and below.
The busbar so that it can be
There is no need for a hole to insert a screw through the bar. relay
The connection terminal is a bushing of the relay connection terminal and the auxiliary member from above and below.
Arrange to sandwich the bar, apply pressure and attach to the bus bar
To be connected to the auxiliary member and the relay connection terminal.
Connect the bus bar to the relay connection terminal with the screw
Therefore, there is also an effect that it is not necessary to form a hole for attaching the relay connection terminal to a heavy and long bus bar.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial perspective view showing a state in which a connection terminal of an embodiment of a switchboard according to the present invention is attached to a bus bar. FIG. 2 is a view of FIG. 1 as viewed from the back of a switchboard. FIG. 3 is an overall side view showing a main part inside the switchboard of FIG. 1; FIG. 4 is an overall rear view showing a main part inside the switchboard of FIG. 1; FIG. 5 is an overall side view showing a main part inside a conventional switchboard. FIG. 6 is an overall rear view showing a main part inside the switchboard of FIG. 5; FIG. 7 is a plan view showing a circuit breaker portion of the switchboard of FIG. 5; [Description of Signs] 1 Bus bar 3 Output terminal 4 Circuit breaker 5 Relay connection terminal (5a horizontal contact surface, 5b vertical connection surface) 7 Connection bar

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02B 1/20 H02G 5/00-5/10 391

Claims (1)

(57) [Claim 1] A switchboard having a connection surface in a vertical plane in a depth direction of the switchboard.
And a circuit breaker, which is positioned above or below the circuit breaker, extends in the left-right direction of the switchboard, has a rectangular cross section when viewed from the side of the switchboard, and has a long side perpendicular to the cross section. A strip-shaped bus bar arranged so as to be connected to, a connection plate connected to a terminal of the circuit breaker, and a relay connection terminal for connecting the connection plate and the bus bar.
In the switchboard provided with, the relay connection terminal comprises a connection surface with the bus bar and a connection surface with the connection plate formed at a right angle to each other, the connection surface with the bus bar is a rectangular cross-section of the bus bar The relay connection terminal is disposed such that the connection surface with the connection plate is in contact with one of the short sides and is located in a vertical plane in the depth direction of the switchboard, and the relay connection terminal is the other of the rectangular cross section of the bus bar.
In cooperation with an auxiliary member arranged to touch the short side of
Apply pressure to pinch the busbar from above and below
A switchboard characterized by being attached to the busbar.