JPH0811008Y2 - Switchboard equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a switchboard device in which a plurality of closed switchboards are installed in a row to improve control wiring such as measurement, control and protection circuits.

[Prior Art] Conventionally, as shown in FIG. 5, the control wiring in this type of switchboard device is such that a plurality of closed switchboards a installed in a row panel are provided with a lead-in terminal block b and a relay terminal block c, respectively, and a control power source is provided. External lead wires d, etc. are connected to the respective lead-in terminal blocks b,
The control lines from various devices in each switchboard a are connected to the relay terminal block c, and the relay terminal blocks c of the adjacent switchboards a are connected by the inter-board connection line e.

In this case, at the time of production in a factory, control wires from various devices are connected to the relay terminal block c by screw tightening one by one, and at the time of on-site installation, the inter-board communication wire e is screw tightened by one screw and the relay terminals are connected. It is connected to the base c.

[Problems to be solved by the invention] In the case of the above-mentioned conventional switchboard device, wiring of the control line in the factory and wiring of the inter-board communication line e on-site are carried out by screw tightening one by one. However, there is a disadvantage that the cost is very high and the cost is high.

In addition, when removing a closed switchboard a from the row board accompanying replacement or inspection of the switchboard, the inter-board communication line e between the adjacent boards is removed, so that the function of another switchboard a is impaired. In addition, in many cases, the control wiring is placed in a place where it is difficult to see inside the panel, so disconnecting the inter-board communication line e etc. is an in-panel work, and the workability is poor and it takes a long time and is dangerous. There is a disadvantage that it is highly susceptible.

The present invention has been made in consideration of such problems of the prior art.
An object of the present invention is to provide a switchboard device that can reduce wiring man-hours and can remove any closed switchboard in a short time without affecting other closed switchboards.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the switchboard device of the present invention is
A plurality of closed switchboards installed in a row panel, control wiring in the panel in the left-right direction of each switchboard, and a terminal block provided on the front surface of each switchboard and connected to the left and right ends of the control wiring in the panel Any of the first and second board connecting parts, a connecting wire that is drawn out from the control circuit room of each of the switchboards, and has a male or female connector attached to the tip thereof, The other connector on the female side or the male side, which is provided on either one side and to which the one connector is detachably connected, and the second connector on the switchboard adjacent to the first board-to-board connecting portion of each switchboard on the left side. Board-to-board connection portion, the first board-to-board connection portion on the left end of the switchboard, and the second board of the switchboard on the right end
A board-to-board connecting wire connected to the board-to-board connecting portion is provided, and a common control line is configured in a loop by the board-to-board control wiring, the board-to-board connecting portion, and the board-to-board connecting wire. .

[Operation] In the switchboard device of the present invention configured as described above, the first and second inter-board connecting portions connected to both ends of the in-board control wiring are provided on the left and right portions of the front surface of each closed switchboard. Since it is provided, a plurality of switchboards installed in a row panel can be easily wired at the site by connecting the board-to-board crossovers from the front to the first and second board connecting parts of each front panel. It will be possible.

Further, the distribution boards at both ends of the row board installation are also connected by inter-board crossovers, and the common control lines are configured in a loop by the inter-board control wiring, each inter-board connection section, and each inter-board crossover, If you need to disconnect any switchboard from the row,
By removing the board-to-board connecting wire connected to the first and second board connecting portions of the switchboard, the switchboard can be removed, and the disconnection of the switchboard disconnects the connection between the switchboards of other switchboards. It does not affect the function of other switchboards.

Moreover, the connection line drawn out from the control circuit room of each closed switchboard is easily connected to the in-board control wiring by connecting the connector to either one of the connection parts between both boards.

[Embodiment] An embodiment of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 shows the overall appearance configuration. Four closed switchboards 1a, 1b, 1c, 1d are installed in a row in the left-right direction, and a connecting member 2 is provided between adjacent boards. By tightening the bolts and nuts on the outer side, the switchboards 1a to 1d are mechanically connected to each other with a gap taken into consideration for extraction. In FIG. 1, the front doors of the switchboards 1a to 1d are omitted.

Each of the switchboards 1a to 1d is divided into a main bus room 3, a control bus room 4, an equipment storage room 5 and a control circuit room 6.

FIG. 3 shows a single-line connection configuration. In the left-end switchboard 1a serving as a pull-in board, a pull-in bushing 7 and first and second bushings 8 and 9 are provided on the bottom wall of the main bus room 3 so as to penetrate the equipment. In the storage chamber 5, the bushings 7, 8 and 9 are connected to each other by an in-board bus 11, and a pull-in cable 10 from the outside is connected to the pull-in bushing 7.

In the equipment storage room 5 of this switchboard 1a, a transformer for grounding type instrument
12 are housed and the primary coil 12a is connected to the in-board bus 11.

Further, in the other switchboards 1b to 1d as drawers, the first and second bushings 8 and 9 are provided through the bottom wall of the main bus room 3 respectively, and these are installed in the equipment storage chamber 5 in the board bus 11 And the switchgear with circuit breaker 13 and the circuit breaker 14 that are connected to each other by the grounding device and are stored in the device storage chambers 5 of the respective switchboards 1b to 1d.
Are respectively connected to the busbars 11 in the board.

The in-board busbars 11 of each of the four switchboards 1a to 1d are connected in a loop by sequentially connecting the first bushing 8 of each board and the second bushing 9 of the other board by a busbar connecting cable 15. ing.

Reference numeral 16 is a control wiring inside the switchboards 1a to 1d, and as shown in FIG. 1, each control busbar room 4 of each switchboard 1a to 1d.
Are housed in the left-right direction, and the first and second inter-board connecting portions 17 and 18 are connected to the respective left and right ends of the in-board control wiring 16.

Each of the first board-to-board connecting portions 17 is composed of a terminal block as shown in FIG. 2, and each of the second board-to-board connecting portions 18 is composed of a terminal block and a female connector as shown in FIG. Switchboard 1b-1d
First board-to-board connection section 17 and second board-to-board connection section 18 of the distribution boards 1a to 1c adjacent to the left side, and first board-to-board connection section of the leftmost board 1a.
17 and the second board-to-board connection portion 18 of the switchboard 1d at the right end are connected by a board-to-board crossover 19 made of a bundled wire having crimp terminals, respectively, and the board control wiring 16 and board-to-board connection of each switchboard 1a to 1d. Connection 17,
The common control line is formed in a loop by the board-to-board crossover line 19.

20 and 21 are instrument current transformers and zero-phase current transformers attached to the respective main circuits of the switchboards 1b to 1d, and 22a to 22d and 23.
Reference numerals a to 23d are protective relay units and measurement / control / display units provided on the respective switchboards 1a to 1d.

FIG. 4 shows the overall configuration of the control circuit, where 24 is a circuit breaker control circuit and 25 is a disconnector control circuit.

Here, in the switchboard 1a, both units 22a and 23a are housed in the control circuit room 6, and the secondary coil 12b and the tertiary coil 12c of the instrument transformer 12 arranged in the device housing room 5 are The secondary busbar 26 and the tertiary busbar 27 are detachably connected to each other by connectors, and the connecting wire drawn out from the control circuit room 6 is connected to the male connector 28 at the tip thereof as shown in FIG. It is connected to the in-board control wiring 16 by being detachably connected to the female connector of the second board-to-board connecting portion 18.

Further, in each of the other switchboards 1b to 1d, both units 22b to 22d, 23b to 23d and both control circuits 24 and 25 are housed in the control circuit room 6 and arranged in the equipment housing room 5. Bowl 2
The lead wires from 0 and 21, wiring between units, between control circuits, etc. are all performed by using connector cables, and the connecting wires from the control circuit room 6 are the same as in the case of the switchboard 1a. The male side connector 28 is detachably connected to the female side connector of the second board-to-board connecting portion 18 so as to be connected to the in-board control wiring 16.

In addition, the handling of these connectors in each of the switchboards 1a to 1d, that is, the insertion and the withdrawal are all performed from the front.

In the switchboard device configured in this way, the connector cable is used for the connection line in each closed switchboard 1a ~ 1d, and since they are all handled from the front,
Wiring man-hours at factories have been greatly reduced, and during on-site installation, the in-panel control wiring 16 for each panel must be connected from the front to the board
Connection between boards can be made by connecting to board connection parts 17 and 18 of 19.
It will also reduce the wiring man-hours during installation.

When it is necessary to pull out any switchboard, especially the draw-out board, for inspection, replacement, etc., the cable 15 connected to the first and second bushings 8 and 9 of this board.
Remove the bus bar to separate it, and connect the first and second boards 1
Remove the board-to-board crossover wire 19 connected to 7, 18 and control wiring inside the board.
By separating 16 and further removing the mechanical connection between the boards,
This board can be removed, and it can be handled as a so-called cassette type closed switchboard.

In this case, since the in-board busbar 11 and the in-board control wiring 16 of each board are configured in a loop, even if any board is removed as described above, power supply to all other boards is realized. In addition, the inter-panel communication of the control wiring can be continued, and therefore, any distribution board can be removed without affecting the functions of other distribution boards.

In the above embodiment, the inter-board communication of the in-board control wiring 16 is
Although the board-to-board crossover wire 19 using the bundled wires is used, it may be performed using a connector cable, and in this case, the number of wiring steps can be further reduced.

The control circuit wiring between the devices and between the boards can be performed using not only electric signal lines but also optical signal lines.

[Effects of the Invention] The present invention is configured as described above.
The following effects are obtained.

The switchboard device of the present invention is installed in a row panel because the first and second connection parts connected to both ends of the control wiring in the panel are provided on the left and right parts of the front surface of each closed switchboard. By connecting a plurality of switchboards to the connection part between the first and second boards on the front of each, a crossover wire between the boards can be connected from the front to easily perform wiring on site at the front. , The connection line drawn out from the control circuit room of each closed switchboard can be easily connected to the control wiring inside the panel by connecting the connector to either one of the connection parts between both boards, and the control circuit wiring Can be planned.

Furthermore, the distribution boards at both ends of the row board are also connected by inter-board crossovers, and the common control lines are configured in a loop by the inter-board control wiring, each inter-board connection section, and each inter-board crossover, If you need to disconnect any switchboard from the row,
By removing the board-to-board connecting wires connected to the first and second board connecting portions of the switchboard, the switchboard can be removed, and the disconnection of the switchboard disconnects the connection between the switchboards of other switchboards. Without affecting the functions of other switchboards, it is possible to easily inspect and replace the switchboards.

[Brief description of drawings]

1 to 4 show one embodiment of a switchboard device according to the present invention, FIG. 1 is an external perspective view, FIG. 2 is an enlarged front view of a connecting portion between boards, FIG. 3 is a single line connection diagram, and FIG. FIG. 4 is a control circuit diagram, and FIG. 5 is a schematic front view of a conventional example. 1a to 1d …… Closed switchboard, 16 …… Control wiring inside the board, 17,18…
… The connection between the 1st and 2nd boards, 19 …… The crossover between the boards.

Claims (1)

[Scope of utility model registration request] 1. A plurality of closed switchboards installed in a row panel, in-board control wires in the left-right direction of each switchboard, and provided on the front surface of each switchboard and connected to the left and right ends of the in-board control wires. In addition, the first and second board connecting portions each including a terminal block, a connecting wire that is drawn out from the control circuit room of each of the switchboards, and has a male or female connector attached to a tip thereof, the two boards. The other connector on the female side or the male side to which the one connector is detachably connected, which is provided on any one of the inter-connectors, and the first inter-connector on the left side adjacent to the first inter-connector of each switchboard. A second board-to-board connection portion of the switchboard, and a board-to-board connecting line that respectively connects the first board-to-board connection portion of the switchboard at the left end and the second-board-to-board connection portion of the switchboard at the right end, Control wiring within each panel, connection between each panel and between each panel Switchboard apparatus constructed in a loop to the common control line by Ri lines.