JP3158565B2 - switchboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard with an improved switchboard case.

[0002]

2. Description of the Related Art When a switchboard disclosed in Japanese Patent Application Laid-Open No. 61-121704 is assembled at a factory, a partition plate is mounted in a switchboard case, and a power supply side disconnection portion and a load side disconnection portion are mounted on the partition plate. The circuit breaker is connected to the disconnecting portion between them, and the power supply side bus and the load cable are connected to the depth side between the power supply side disconnecting portion and the load side disconnecting portion. When assembling the switchboard, it is rare that the electrical components such as the disconnecting section, the circuit breaker, and the power supply side bus are almost aligned and incorporated into the switchboard case. In general, a set of electrical components, for example, a circuit breaker side or a power source side bus, is assembled into a switchboard case, and when the remaining electrical components are ready, the electrical components are again assembled into the switchboard case to complete the switchboard.

[0003]

As a result, not only is the delivery time of the switchboard to the customer delayed, but also when replacing one of the installed switchboards of the installed row panel due to an accident or the like, the switchboard must be completely replaced. In addition, there is a problem that a large amount of work time is required for replacement and assembly work.

[0004] It is an object of the present invention to provide a switchboard which significantly reduces the time required for assembling and replacing the switchboard.

[0005]

The switchboard of the present invention comprises a switchboard case that supports a circuit breaker having a bus bar supported on a support surface and a disconnecting portion that comes into contact with and separates from the bus bar, and surrounds the bus bar and the circuit breaker. It is to support in a state of floating from the floor on the support surface.

[0006]

For example, if the switchboard case installed on the support surface of the customer's delivery site is attached and detached, the switchboard can be easily completed or removed, so that the time required for assembling or replacing the switchboard can be significantly reduced.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

A rectangular switchboard case 1 having a vertical portion longer than a width portion is composed of a busbar-side case 2 and a breaker-side case 3 which is open at one end. The circuit breaker side case 3 has an opening 4 at one end and a door 5 which can be freely opened and closed at the other end.
Inside the circuit breaker side case 3 with the door 5 opened, a guide rail 6 is attached to the right inner surface of the case 3. The guide rail 6 engages and supports a support fitting 8 attached to the side surface of the vacuum circuit breaker 7. Therefore, the vacuum circuit breaker 7 moves inside the switchboard case while sliding on the guide rail via the support fitting 8.

The vacuum circuit breaker 7 comprises an operating mechanism 9 and a cut-off section (not shown) in the vacuum valve 10. Each of the three-phase vacuum valves 10 is arranged in the vertical direction. The power supply side disconnecting portion 1 is provided at the depth end face and the side face of the vacuum valve 10.
1 and a load-side disconnecting section 12. Load side disconnection part 1
2 is a contact piece 13 extending in a direction perpendicular to the power supply side disconnecting portion 11
Connected through. The contact piece 13 is connected to a load cable 14. A three-phase load cable 14 serving as a load bus is integrally molded with an insulating resin, and is connected to a load that penetrates through the partition plate 15 and extends to the lower conductor control chamber 16.

The conductor control room 16 forms a control room in which a controller (not shown) is disposed and a conductor room via a partition plate 16A, and instruments 17 are attached to the door 5 on the control room side. Above the conductor control chamber 16, the vacuum circuit breaker 7, the load-side disconnecting section 12, and the power-supply-side disconnecting section 11 are arranged via a partition plate 15. The power supply disconnecting portion 11 is connected to a three-phase power supply horizontal bus 20 covered by the bus case 2.

The support plate 2 attached to the wall 21 in the building
2 has three support insulators 23 mounted in the height direction. 3
Support insulators 23 are three-phase power supply side horizontal buses 20X, 20
Y, 20Z are supported. Three-phase power supply side horizontal bus 20
X, 20Y, and 20Z extend in the horizontal direction.

In the horizontal direction, as shown in FIGS. 8 and 9, a plurality of sets of rectangular switchboard cases 1X1, 1X2 to 1XN having a vertical portion H longer than a width portion W in the vertical and horizontal directions are arranged.
A horizontal bus bar 20 is provided for each of the upper and lower switchboard cases 1X1, 1X2 to 1XN so as to cross the width of the switchboard case, and a vertical line connecting at least one pair of switchboards 1X1 and 1XN in a vertical relationship. The bus bar 22 is connected to the horizontal bus bar 20, and the load bus bar 14 is drawn out from the horizontal bus bar 20 of the other switchboard case 1X2 in the vertical direction.
Was connected to a circuit breaker 7.

[0013] The length of the three-phase horizontal bus bar 20 arranged in the row board in which a plurality of switchboard cases are arranged in the row board is an extension 2 of a length that can move at least one or more switchboard cases.
One. Row switchboard case 1X1, 1X2, up to 1X
When N is stacked in two stages, the upper and lower horizontal bus bars 20 are arranged so as to face each other. The upper and lower sides of both ends of each horizontal bus 20 are connected by a vertical bus 22 to form a loop circuit, thereby increasing the electric capacity of each bus.
The bus can be reduced accordingly.

As described above, according to the switchboard of the present invention,
The following effects can be achieved.

(1) When assembling the switchboard case 1,
The busbar-side case 2 is mounted on the wall surface 21, and a support plate 22 and three support insulators 23 are mounted on the inner surface of the busbar-side case 2, with each support insulator 23 supporting three-phase horizontal buses 20X, 20Y, and 20Z. , Power supply side disconnection part 1 in circuit breaker side case 3
1, electrical devices such as a load-side disconnecting portion 12, a circuit breaker 7, and the like are housed.
Is fitted in the busbar side case 2, the circuit breaker side case 3 is housed in the busbar side case 2, and the overlapped portion of the circuit breaker side case 3 and the busbar side case 2 is integrated by fastening means 24 such as bolts, nuts and pins. Then, the switchboard case 1 is formed. When the circuit breaker side case 3 is fitted into the bus side case 2, the power supply side disconnecting portion 11 comes into contact with the power supply side horizontal buses 20X, 20Y, 20Z, but the circuit breaker 7 is moved to the door side, and the test position, It can move to the disconnection position.

As described above, the switchboard case 1 of the present invention divides the switchboard case 1 into the busbar-side case 2 and the circuit breaker-side case 3, and the opposing side where the busbar-side case 2 and the circuit breaker-side case 3 face each other The openings are open, and the work such as mounting and moving the electric equipment in both cases can be easily performed through the openings, for example, 4. Therefore, the time for assembling or disassembling the switchboard case and the electric components in the switchboard case is significantly reduced. Now you can shorten it.

(2) Further, in order to shorten the time for assembling or disassembling the switchboard case, three support insulators 23 are mounted on the wall surface 21 and each support insulator 23 is connected to the three-phase power bus 20.
By supporting the X, 20Y, and 20Z, and supporting the circuit breaker side case 3 directly on the wall surface 21 to complete the switchboard case 1, the depth dimension of the switchboard case 1 can be further reduced.

(3) Sideboard switchboard case 1X1, 1X2
1XN, for example, the circuit breaker side case 3 of the switchboard case 1X2
When an accident occurs and replacement is performed, the circuit breaker side case side may be pulled out from the busbar side case 2 and then replaced with a new circuit breaker side case 3. Replacement time can be reduced.

Further, at the time of replacement, after removing the switchboard case 1X2, another switchboard case is moved and the extension 21
Move the switchboard placed on the left side to the row switchboard case 1
X1, 1X2 to 1XN. Sideboard switchboard case 1X
Moving from 1,1X2 to 1XN requires the power-side disconnection unit 1
1 is prevented from being used only at one location of the horizontal bus bar 20,
Since they are used evenly, wear loss of the horizontal bus bar 20 can be prevented.

When the load power increases and a switchboard case is added, a switchboard case can be arranged in the extension portion 21.

Further, the upper row switchboard case 1X shown in FIG.
When a power failure occurs at 1, 1X2 to 1XN, since the lower row switchboard case 1X1, 1X2 to 1XN is operating,
You can now prevent all blackouts.

(4) On the other hand, when the switchboard case 1 is transported, the storage portion B of the guide rail 6 is formed to have a length capable of storing the portion A in which the busbar case 2 is fitted.
Therefore, the vacuum circuit breaker 7 is moved to the door side by the guide rail 6, the fitting portion A is housed in the circuit breaker side case side, and the busbar case 2 can be fitted into the circuit breaker side case 3 to be transported integrally. The capacity can be reduced by the amount fitted, and the transport volume can be increased.

(5) The switchboard of the present invention is supported on a support surface.
Supports a circuit breaker with a broken bus and a disconnecting part that comes in contact with and separates from the bus
The switchboard case surrounding the busbar and circuit breaker.
Support it on the holding surface while floating from the floor . For this reason, when one of a plurality of switchboard cases is detached, the load cable 14 is drawn out from the conductor control room, but since the lower side of the conductor room is a space, the load cable 14 is not obstructed by other parts. , It is easier to do withdrawal work.
The same applies to the case where the switchboard case is supported on a wall surface.

[0024]

As described above, according to the switchboard of the present invention, the horizontal bus is supported on the support surface, and the switchboard case can be directly attached to and detached from the support surface, so that the work time for completing and replacing the switchboard is reduced. Not only can it be significantly shortened, but also the depth of the switchboard can be reduced. Furthermore, when a plurality of switchboard cases are supported on the support surface in the air, the lower part of the conductor chamber is a space, so that the load cable 14 can be easily pulled out without being obstructed by other parts. .

[Brief description of the drawings]

FIG. 1 is a side sectional view of a switchboard according to an embodiment of the present invention.

FIG. 2 is a right side front view when FIG. 1 is viewed from the right side.

FIG. 3 is a sectional view taken along line 1X-1X in FIG.

FIG. 4 is a sectional view taken along line 2X-2X in FIG. 1;

FIG. 5 is a sectional view taken along line YY of FIG. 1;

FIG. 6 is a sectional view taken along line 3X-3X in FIG. 1;

FIG. 7 is a perspective view near a power supply bus.

FIG. 8 is a front view of a row switchboard according to an embodiment of the present invention.

FIG. 9 is an internal circuit diagram of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Distribution board case, 2 ... Bus side case, 3 ... Circuit breaker side case, 7 ... Vacuum breaker, 9 ... Power supply case, 11 ... Power supply side disconnection part, 21 ... Wall surface.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-74117 (JP, A) JP-A-50-78846 (JP, A) JP-A 61-113520 (JP, U) JP-A 57-78 3312 (JP, U) Fully open 49-148437 (JP, U) Fully open 52-60728 (JP, U) Fully open 51-62025 (JP, U) Fully open 50-150736 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02B 1/20 H02B 1/26

Claims (3)

(57) [Claims] 1. A state in which a switchboard case having a bus bar supported on a support surface and a disconnecting portion contacting and separating from the bus bar is supported, and a switchboard case surrounding the bus bar and the circuit breaker is floated from the floor on the support surface.
In switchboard, characterized in that the support. 2. A bus-side cable surrounding a bus supported on a support surface.
And a disconnecting part that fits in the busbar side case and comes into contact with and separates from the busbar.
Circuit breaker surrounding and supporting the circuit breaker having
Side case, and the busbar side case is housed in the circuit breaker side case.
A distribution board characterized by being delivered and transported together . And a busbar side case surrounding the busbar supported on the support surface, a circuit breaker side case surrounding the circuit breaker fitted into the busbar side case and having a disconnecting portion to be separated from and connected to the busbar, and supporting the circuit breaker. Support the switchboard case with the
Arrange a plurality of electrical board cases on the row along the bus, and
Provide a length that allows each switchboard case to move on the bus.
Switchboard, characterized in that there.