JPS6012846B2 - closed switchboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a closed switchboard in which a plurality of removable electrical devices, such as disconnectors, are stacked in a stack, and particularly to the bus bar configuration thereof.

Generally, the bus bar structure of a closed switchboard is constructed as shown in FIGS. 1 and 2.

That is, in FIG. 1, the main bus 1 is arranged on the upper part of the closed distribution board 2, and the power supply side branch conductor 3 is connected from the main bus 1 to each circuit unit.
, a disconnecting section 5, a wire breaker 6, a fuse 4, and a load-side branch conductor 7, and the conductors 3 and 7 are supported by a support 8.

Further, FIG. 2 shows an example in which the main bus 1 is arranged inside the closed distribution board 2 and the fuse 4 is omitted, and the configuration of each circuit unit is the same as that in FIG. 1. The subordinate method configured as described above has the following improvements.

m In the case of FIG. 1, even if the box of the closed distribution board is constructed in multiple stacks, only one circuit can be stored per side because the fuse 4 and circuit breaker 6 are stored in each unit.

'21 In the case of Fig. 2, since the main busbar 1 is arranged in the depth direction of the panel, it is difficult to make the closed switchboard compact and to configure the busbars of multiple circuits.

[3' Since bus bars and conductors are arranged endlessly in the board, there is a large amount of wattage loss.

An object of the present invention is to provide a closed power distribution board that is compact, can accommodate a large number of devices per panel, and has low wattage loss.

The present invention will be explained below with reference to an embodiment shown in FIGS. 3, 4, and 5.

In the figure, a main bus 1 is supported and arranged on the upper part of a closed switchboard 2 via a support 8, and one end of a vertical bus 9 is connected to a communication bus 10' which is connected to the main bus 1. Also, the vertical generatrix 9
As shown in FIG. 5, each phase is composed of a pair of parallel conductors ga and 9b, and between these parallel conductors 9a and 9b, the power supply side of each side disconnector 6, which is housed in a multi-tiered manner, is constructed. As shown in FIGS. 4 and 5, the terminal portions 11 of the disconnecting section 5 are respectively attached and connected with bolts 13 through attachment holes 12.

On the other hand, the load-side disconnecting section 5' is previously shifted to the front (toward the disconnector side) in order to reduce contact with the vertical bus bar 9.

One end of the load-side branch conductor 7 of each circuit is connected to the terminal portion 11' of the load-side disconnecting section 5' as shown in FIG. , placed on the ceiling (or lower part) as shown in FIG. Note that the load side branch conductor 7 is similarly constructed for each phase by a pair of parallel conductors 7a and 7b, as shown in FIG.
' is sandwiched between these conductors 7a and 7b. Further, in order to penetrate the interphase portion of the vertical generatrix 9, a bent portion 14 is provided as shown in FIGS. 4 and 5. In addition, as mentioned above, since the power supply side disconnecting section 5 and the load side disconnecting section 5' are shifted in the front and back direction, the space created between the power source side disconnecting section 5 and the back side of the shatter breaker 6 is shown in FIG. As such, the structure is compact enough to accommodate the space for housing the fuse 4.

With the busbar structure described above, the vertical busbar 9 is directly connected to the terminal section 11 of the power supply side disconnecting section 5, so the independent support 8 of the vertical busbar 9 can be omitted since it can also be used to support the power supply side disconnecting section 5. Further, since the vertical bus bar 9 itself also functions as a power supply side branch conductor, it is possible to make the closed switchboard 2 more compact and to reduce watt loss.

In addition, the fuse 4 can be stored in the space created by shifting the power supply side disconnection section 5 and the load side disconnection section 5' in the front-rear direction, so that the fuse 4 can be stored in the space created by shifting the power supply side disconnection section 5 and the load side disconnection section 5'. It is now possible to store 3 circuits.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and if necessary, as shown in FIG. You may.

According to the present invention as described above, it is possible to provide a closed distribution board that is compact, has low wattage loss, and can accommodate a large number of electrical devices per panel.

[Brief explanation of the drawing]

Figures 1 and 2 are side views showing a conventional closed switchboard;
The figure is a side view showing an embodiment of a closed switchboard according to the present invention, FIG. 4 is a partial detailed view illustrating in detail the bus connection section "f" shown in FIG. 3, and FIG. 5 is a V-V shown in FIG. 4. The arrow view and FIG. 6 are external views showing a vertical generatrix used in another embodiment of the present invention. 2... Closed switchboard, 5... Power supply side disconnection section, 5'...
・Load-side disconnection section, 6...Shin breaker, 9...Vertical bus bar, 1
1, 11'...terminal section. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1. The inside of the panel frame is divided into a plurality of equipment rooms and a busbar room formed in multiple stages, and electrical equipment is stored in each of the equipment rooms so that it can be pulled out, and the partition between the two rooms is provided with electrical equipment on the electrical equipment side. In the case where the power supply side and load side disconnecting parts are connected to and separated from the terminals, the terminal located at the upper part of the terminal on the electrical equipment side has a fuse interposed in the middle part in the length direction to connect the terminal to the tip. The length should be longer than the terminals at the bottom, and the disconnect section located at the top of the power supply side and load side disconnect sections on the panel frame should be aligned in the lengthwise direction of the upper and lower terminals on the electrical equipment side. , the vertical busbar is pulled out from the main busbar box formed at the top of the frame near the upper disconnection section, which is installed at the back of the lower disconnection section, and The terminal portion of the upper disconnection section is directly connected to the vertical busbar, and the conductive section of the lower disconnection section is connected to the outside via a conductor bent so as to pass between the phases of the vertical busbar in the space created below the upper disconnection section. A closed switchboard characterized by being pulled out.