JP3239651U - switchboard - Google Patents

Abstract

A switchboard having at least a transformer and a plurality of branch breakers, in which the output terminal of the transformer and the input terminals of the plurality of branch breakers can be easily connected to reduce connection errors. Provide switchboards that can A switchboard having at least a transformer and a plurality of branch breakers 5b, wherein the transformer and the plurality of branch breakers 5b are connected by a conductive plate, and the conductive plate is a transformer having one end connected to the transformer. Transformer output bar, connection bars CBR, CBS, CBT one end of which is connected to the branch breaker 5b, and main line bar to which the other end of the transformer output bar and the other end of the connection bar are connected. can be reduced to improve safety. [Selection drawing] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchboard, and more particularly to a switchboard used in high-voltage power receiving equipment having a plug-in unit installed therein.

Generally, in commercial facilities, factories, buildings, etc., high voltage such as AC 6,600V supplied from electric power companies is converted to AC 200V or AC 100V low voltage and supplied to the distribution board in the building. A switchboard is provided for In recent years, a cubicle-type switchboard is widely known as a facility for receiving such high voltage. A cubicle-type switchboard is a set of equipment for receiving power at high voltage (e.g., transformer, circuit breaker, protective device, gauges, etc.) housed in a metal housing. power receiving equipment”.

As such a switchboard, in particular, a cubicle-type high-voltage power receiving equipment, for example, Patent Document 1 describes ``to provide a cubicle-type high-voltage power receiving device that can downsize the entire device and is easy to handle'' (paragraph " 0005".), "A box is composed of three elements, an underframe, a shell and a roof body, and at least a transformer and a ventilation device are built in the inside, and the roof body has a raised part in the center and its A cubicle-type high-voltage power receiving device characterized in that it is formed in a shape having a mounting surface positioned lower than the top of the protuberance on both sides, and a hanging metal fitting is provided on the mounting surface” (see “Claim 1”). ing.

In addition, in Patent Document 2, "the purpose is to provide a high-voltage power receiving facility that can be installed even in a narrow space by suppressing an increase in the size of the housing" (see paragraph "0007"). a facility body in which an internal device that transforms power from the power source and supplies it to an electrical device used by a consumer is housed in a housing; and a storage battery that stores the power to the electrical device. High-voltage power receiving equipment arranged on the top surface of the body” (see “Claim 1”).

JP-A-08-033127 JP 2017-108563 A

Here, although not explicitly stated in Patent Documents 1 and 2, it is presumed that cables are used for the internal wiring. If the number of wires is not so large, there is no particular problem, but for example, in the case of a configuration in which many branch breakers are installed in the housing, connect the output terminal of the transformer and the input terminals of multiple branch breakers with cables. Therefore, as the number of branch breakers increases, the wiring work becomes more complicated, and the risk of connection errors also increases, which may pose a safety problem.

Therefore, the present invention is a switchboard that includes at least a transformer and a plurality of branch breakers, and it is possible to easily connect the output terminal of the transformer and the input terminals of the plurality of branch breakers, thereby reducing connection errors. An object of the present invention is to provide a switchboard capable of improving safety by

In order to achieve the above object, the invention of claim 1 is a switchboard comprising at least a transformer and a plurality of branch breakers, wherein the transformer and the plurality of branch breakers are connected by a conductive plate. characterized by being

Further, the device of claim 2 is the switchboard of claim 1, wherein the conductive plate includes a transformer output bar having one end connected to the transformer and one end connected to the branch breaker. and a trunk bar to which the other end of the transformer output bar and the other end of the connection bar are connected.

Further, the device of claim 3 is the switchboard of claim 1 or claim 2, wherein the branch breaker constitutes a plug-in unit together with an adapter to which the branch breaker is plug-in connected. characterized by

Further, the device of claim 4 is the switchboard of claim 2, wherein the trunk bar and the connection bar include a horizontally arranged conductive plate and a vertically arranged conductive plate. characterized by being connected in combination.

Further, the device of claim 5 is the switchboard of claim 3, wherein the trunk bar and the connection bar combine conductive plates arranged in the horizontal direction and conductive plates arranged in the vertical direction. characterized in that it is connected to

According to the switchboard of the present invention, it is possible to extremely easily connect the output terminal of the transformer and the input terminals of the plurality of branch breakers, and it is possible to reduce connection errors and improve safety.

In addition, according to the switchboard of the present invention, a wiring cable is not used for connection between internal parts, and a combination of conductive plates arranged in the horizontal direction and the vertical direction are combined for connection, resulting in a compact structure and a housing. This has the remarkable effect of suppressing an increase in size and realizing space saving and miniaturization.

1 is a perspective view showing a schematic internal structure of a switchboard according to a first embodiment of the present invention; FIG. FIG. 2 is an enlarged view of a main portion of FIG. 1; FIG. 3 is an enlarged view of a main portion of FIG. 2; FIG. 4 is an enlarged view of a main part of FIGS. 2 and 3; FIG. Figure 5 is a schematic side view of Figure 4;

The present invention will be described in more detail below using preferred embodiments. However, the following embodiments are merely examples embodying the present invention, and the present invention is not limited thereto. In addition, below, the same code|symbol is attached|subjected to the same element in all drawings, and the overlapping description is abbreviate|omitted or simplified. Also, in the explanation in the text, the reference numerals mentioned before are used as necessary.

(First embodiment)
A switchboard 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. A switchboard 1 according to the first embodiment of the present invention is a high-voltage power receiving facility including at least a transformer (also referred to as a "transformer") 3 and a branch breaker 5b. The switchboard 1 is a cubicle-type switchboard that has a metal housing containing a set of equipment (eg, transformer, circuit breaker, protective device, gauges, etc.) for receiving power at high voltage. In this embodiment, the board surface of the housing and the like are omitted, and the housing frame 2 constituting the housing is illustrated.

The housing frame 2 includes four vertical struts 2v erected in the vertical direction, four horizontal struts 2h connected to the upper ends of the vertical struts 2v, and four horizontal struts 2h connected to the lower ends of the vertical struts 2v. is provided with a horizontal crosspiece 2h. Further, it has four auxiliary vertical struts 2a connected to the upper and lower horizontal beams 2h for reinforcing the housing frame 2, and these auxiliary vertical struts 2a can be additionally installed as needed. Inside the housing frame 2, a mounting rail 6 for mounting the branch breaker 5b, a vertical mounting strut 2b for fixing a main line bar and a connection bar for connecting the branch breaker 5b and the transformer 3, and a horizontal mounting column 2b are provided. A crosspiece 2c is provided.

The transformer 3 transforms the high voltage of AC 6600V supplied from the electric power company into AC 100V or AC 200V and supplies it to a plurality of internal branch breakers 5b. In this embodiment, since a three-phase three-wire system (200V) is exemplified, the output terminals of the transformer 3 are the first phase (R phase), the second phase (S phase), and the third phase (T phase). It has three output terminals, and each output terminal has three output bars corresponding to each phase: a first transformer output bar 4R, a second transformer output bar 4S, and a third transformer output bar. 4T is connected. These three output bars use copper plate conductors rather than cabling. In principle, the three output bars are arranged in parallel at equal intervals in the vertical direction, but as shown in the figure, it is possible to appropriately provide bent portions in the horizontal direction. Further, in this embodiment, a first main switch section MSR, a second main switch section MSS, and a third main switch section MST are provided in the middle of each of the three output bars, and these switch sections can be operated as necessary. , the output from the transformer 3 can be cut off. The other end of each of the first transformer output bar 4R, the second transformer output bar 4S, and the third transformer output bar 4T is connected to a corresponding three-phase main line bar ("bus bar" or "bus bar"). .) is connected to one end of the

In this embodiment, as shown in the figure, the trunk bars are composed of a first trunk bar BR, a second trunk bar BS, and a third trunk bar BT, each of which is arranged horizontally. and a sub-bar whose upper end is connected to the other end of the main bar and arranged vertically. The main bar consists of a first main bar MBR, a second main bar MBS, and a third main bar MBT, which are arranged horizontally corresponding to 3 (R, S, T) phases. It comprises a first sub-bar SBR, a second sub-bar SBS and a third sub-bar SBT corresponding to the (R, S, T) phases. All trunk bars are made of copper plate. As shown in the figure, the three main bars are arranged horizontally at regular intervals, and bent portions are provided as necessary. In addition, although the three sub-bars are arranged vertically at equal intervals, a bent portion may be provided as necessary.

A plurality of sets of connection bars are connected at equal intervals in the horizontal direction to the side surfaces of the trunk bar, specifically, three sub-bars (first sub-bar SBR, second sub-bar SBS, and third sub-bar SBT). In this embodiment, three pairs of connection bars are provided, but the number of pairs may be increased or decreased as needed. The connection bar is a conductive plate made of copper plate for supplying the output voltage of the transformer 3 to the branch breaker 5b. It consists of two connecting bars CBS and a third connecting bar CBT, and as shown in the figure, is connected to the side of the sub-bar with an auxiliary connecting bar. Specifically, the first sub-bar SBR and the first connection bar CBR are connected by the first auxiliary connection bar CBRA, the second sub-bar SBS and the second connection bar CBS are connected by the second auxiliary connection bar CBSA, and the The third sub-bar SBT and the third connection bar CBT are connected by a third auxiliary connection bar CBTA. The auxiliary connecting bar is also a conductive plate made of copper plate. In this way, the transformer output bar, mains bar and connecting bar are configured so that the output voltage of the transformer can be supplied to the branch breaker.

Hereinafter, in the drawings, the connection bar provided at the uppermost position and its related components will be described, and the description of the other connection bars and related components will be omitted because they have the same connection structure.

A branch breaker 5b is connected to the three connection bars (first connection bar CBR, second connection bar CBS, and third connection bar CBT). Here, the mounting structure of the branch breaker 5b will be described. In this embodiment, the branch breaker 5b constitutes the plug-in unit 5 together with the adapter 5a. The configuration of the plug-in unit 5 itself is well known, and the branch breaker 5b is mounted on the adapter 5a, and is configured to be connected to each connection bar by plug-in plugs 5c provided on the adapter 5a.

A pair of upper and lower mounting rails 6 are attached to the vertical mounting strut 2b. The mounting rail 6 is provided with a plurality of screw holes 6a, into which the plug-in unit 5 can be screwed. The aforementioned three connection bars (first connection bar CBR, second connection bar CBS, third connection bar CBT) are arranged between the pair of mounting rails 6 . The three insertion plugs 5c provided in the adapter 5a are plugged into the corresponding first connection bar CBR, second connection bar CBS, and third connection bar CBT, respectively.

The branch breaker 5b is provided with three load-side terminals 7, and lead bars 8 are connected to the load-side terminals 7, respectively. The lead bar 8 is a copper plate bent in a substantially L-shape, and the tip thereof is connected to the corresponding three (R, S, T)-phase secondary output side cable 9 .

In this embodiment, the mounting rails 6, screw holes 6a, connection bars (first connection bar CBR, second connection bar CBS, (third connection bar CBT, first auxiliary connection bar CBRA, second auxiliary connection bar CBSA, third auxiliary connection bar CBTA) are arranged in common, and these arranged parts, trunk bars, After installing the switchboard 1 in which the transformer 3, gauges and other necessary parts are built in the housing at the site, the plug-in unit 5 can be plugged into the connection bar as required. In this embodiment, the secondary output side cable 9 is the only distribution cable, and all internal connections are made of copper conductive plates. Furthermore, it is only necessary to screw the plug-in unit 5 onto the mounting rail 6 at the required location and plug the insertion plug 5c of the adapter 5a into the corresponding connection bar. can be performed easily and safely. In this embodiment, four branch breakers are illustrated as an example, but it is needless to say that the effect of the present invention increases as the number of branch breakers to be installed increases.

1 Switchboard 2 Housing frame 2a Auxiliary vertical strut 2b Vertical mounting strut 2c Horizontal mounting strut 2h Horizontal strut 2v Vertical strut 3 Transformer 4R First transformer output bar 4S Second transformer output bar 4T Third transformer output bar 5 Plug In-unit 5a Adapter 5b Branch breaker 5c Insertion plug 6 Mounting rail 6a Screw hole 7 Load side terminal 8 Lead bar 9 Secondary output side cable BR First trunk bar BS Second trunk bar BT Third trunk bar MBR First main bar MBS Second main bar MBT Third main bar SBR First sub-bar SBS Second sub-bar SBT Third sub-bar CBR First connection bar CBS Second connection bar CBT Third connection bar CBRA First auxiliary connection bar CBSA Second auxiliary connection bar CBTA Third auxiliary connection bar MSR First main switch section MSS Second main switch section MST Third main switch section

Claims (5)

A switchboard with at least a transformer and a plurality of branch breakers,
A switchboard, wherein the transformer and the plurality of branch breakers are connected by a conductive plate. The conductive plate includes a transformer output bar having one end connected to the transformer, a connection bar having one end connected to the branch breaker, and the other end of the transformer output bar and the other end of the connection bar. 2. A switchboard according to claim 1, comprising a connected trunk bar. 3. The switchboard according to claim 1, wherein the branch breaker constitutes a plug-in unit together with an adapter to which the branch breaker is plug-in connected. 3. The switchboard according to claim 2, wherein the trunk bar and the connection bar are connected by combining a horizontally arranged conductive plate and a vertically arranged conductive plate. 4. The switchboard according to claim 3, wherein the trunk bar and the connection bar are connected by combining a horizontally arranged conductive plate and a vertically arranged conductive plate.

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