JP4338939B2 - switchboard - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the arrangement of feeder devices housed in a switchboard and each room (compartment) of a busbar.
[0002]
[Prior art]
FIG. 2 shows the structure of a conventional two-stage stacker that accommodates two conventional feeders.
In FIG. 2, 1 is a housing, 2a and 2b are front doors, 3a and 3b are control equipment rooms, 4a and 4b are circuit breaker rooms, 5 is a bus bar room, 6 is a cable room, 7 is a bus bar, 8a and 8b are variable. Current collectors, 9a and 9b are external terminals, 10a and 10b are cables, 11 is a rear door, 12a and 12b are rear surface protection covers, 13 is a rear partition plate for the busbar chamber, 14 is a busbar fixing insulator, 15 is an insulator mounting plate, 16a 16b are circuit breakers.
Conventionally, the arrangement of compartments in the panel (viewed from the side) is as follows: “control device rooms 3a, 3b” → “breaker rooms 4a, 4b” from the front to the rear with the front doors 2a, 2b opened. "→" Bus room 5 "→" Cable room 6 "in this order, and the phase arrangement of the bus lines 7 is arranged in a row in the height direction.
In-panel connection of each device is connected from the bus 7 to “upper / lower circuit breakers 16a, 16b” → “current transformers 8a, 8b” → “external terminals 9a, 9b”. The cable from the device is connected. The bus bar 7 is connected to the bus bar of the other board adjacent to the drawing in the direction perpendicular to the drawing at the edge of the board side face.
Connection and inspection work of the bus bar 7 with the other panel in the switchboard having such a configuration is performed by removing the rear door 11, the rear surface protection covers 12a and 12b, and the bus bar room partition plate 13 from the rear surface of the panel.
[0003]
[Problems to be solved by the invention]
However, in such a conventional technique, there is a problem that it is difficult to perform bus connection work / inspection work with an adjacent board for the following reason.
(1) The distance from the rear panel to bus 7 is far.
(2) Between the bus bar 7 and the operator, there are “bus bar fixing insulator 14 and mounting plate 15”, “external terminal 9b”, and “cables 10a, 10b”.
(3) The partition plate at the rear of the bus room is difficult to remove.
(4) Since the circuit breaker chambers 4a and 4b and the bus bar chamber 5 overlap in the front-rear direction, the panel depth dimension increases.
The present invention has been made to solve such a problem, and an object of the present invention is to provide a switchboard that can easily perform bus connection work and inspection work with an adjacent board.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention has a multi-stage in which a door is provided before and after a housing, and a plurality of feeder devices and a bus for supplying power to each feeder are divided into each chamber and housed in the housing. In the distribution board, the bus bar chamber is disposed at an intermediate position between the upper and lower circuit breaker chambers, and a insulator mounting plate is disposed on the lower surface side of the upper circuit breaker chamber, and two bus bar fixing insulators are disposed on the lower surface of the insulator mounting plate. Are arranged in the vertical direction, and one bus fixing insulator is arranged in the vertical direction on the upper surface side of the lower circuit breaker chamber, and further, the one bus fixing insulator is The phase arrangement of the busbars arranged in the space below the upper two fixed insulators and housed in the busbar chamber is an inverted triangle .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side sectional view showing a switchboard in an embodiment of the present invention.
In FIG. 1, 1 is a housing, 2a and 2b are front doors, 3a and 3b are control equipment rooms, 4a and 4b are circuit breaker rooms, 5 is a busbar room, 6 is a cable room, 7 is a busbar, 8a and 8b are variable Current collectors, 9a and 9b are external terminals, 10a and 10b are cables, 11 is a rear door, 12a and 12b are rear protective covers, 13 is a rear partition plate for the busbar compartment, 14 is a busbar fixing insulator, 15 is an insulator mounting plate, 16a16b Is a circuit breaker, and 17 is a front cover of the bus room.
Arrangement of compartments in the switchboard (viewed from the side) is as follows: “control device room 3a, 3b” → “breaker room 4a, 4b + busbar room 5” from the front to the rear with the front doors 2a, 2b opened. ”→“ Cable room 6 ”, the bus room 5 is arranged in the space between the upper and lower circuit breaker rooms 4a and 4b, and the phase arrangement of the bus bar 7 is in the shape of ▽. The phase arrangement of the bus 7 and the connection method from the bus 7 to the circuit breakers 16a and 16b are different.
An opening for busbar connection and inspection work is provided on the front side of the busbar chamber 5 and a removable cover 17 is attached. The busbar connection and inspection work is performed by removing the cover 17 from the front of the panel.
The present embodiment is an example of “two feeders, two-stage product of one bus”, but also applies to “two feeders, two-stage product of two buses” or “three feeders, three-stage product of one bus”. be able to.
[0006]
【The invention's effect】
As described above, the present invention has the following effects.
(1) The bus bar chamber is disposed at an intermediate position between the upper and lower circuit breaker chambers, a insulator mounting plate is disposed on the lower surface side of the upper circuit breaker chamber, and two bus bar fixing insulators are disposed on the lower surface of the insulator mounting plate. Each bus bar is arranged in the vertical direction, and one bus bar fixing insulator is arranged in the vertical direction on the upper surface side of the lower circuit breaker chamber, and further, the one bus bar fixing insulator is arranged on the upper circuit side. Since the arrangement of the phases of the busbars arranged in the space below the two fixed insulators and accommodated in the busbar chamber is an inverted triangle, the conventional switchboard can be used between the busbar 7 and the operator. was interposed "bus fixed insulator 14 and the mounting plate 15 ', an obstacle such as" external terminal 9b ", and" cable 10a, 10b "is no no longer, thereby improving workability of the bus connection and inspection.
(2) By disposing the bus room in the extra space between the upper and lower sides of the circuit breaker, the conventional bus room is no longer required, and the board dimensions (depth direction) can be reduced without affecting the board height. it can.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing a switchboard in an embodiment of the present invention.
FIG. 2 is a side cross-sectional view showing the structure of a two-stage stacker that houses two feeders in the prior art.
[Explanation of symbols]
1: Housings 2a, 2b: Front doors 3a, 3b: Control equipment rooms 4a, 4b: Breaker room 5: Bus bar room 6: Cable room 7: Bus bar 8a, 8b: Current transformers 9a, 9b: External terminals 10a, 10b : Cable 11: Rear doors 12a and 12b: Rear protective cover 13: Rear partition plate 14 of busbar room 14: Busbar fixing insulator 15: Insulator mounting plates 16a, 16b: Circuit breaker 17: Busbar front cover

Claims (2)

In the multistage distribution switchboard which has doors before and after the housing, and stores a plurality of feeder devices and buses for supplying power to each feeder divided into each chamber,
The bus bar room is arranged at the middle position between the upper and lower circuit breaker rooms, and the insulator mounting plate is arranged on the lower surface side of the upper circuit breaker room.
On the lower surface of the insulator mounting plate, two busbar fixing insulators are arranged in the vertical direction,
And, on the upper surface side of the lower circuit breaker chamber, one bus bar fixing insulator is arranged in the vertical direction,
Further, the one bus bar fixing insulator is arranged below the two upper fixing insulators through a space, and the phase arrangement of the bus bars housed in the bus bar chamber is made into an inverted triangle shape. Characteristic switchboard. 2. The switchboard according to claim 1, wherein the one bus bar fixing insulator is disposed below one of the upper two bus bar fixing insulators on one side of the door where the bus bar is connected. .

Images