JPS58222704A - Double bus type enclosed switchboard - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-bus-bar type closed switchboard, and particularly includes a load-side disconnecting section, and upper and lower bus-bar disconnecting sections disposed above and below the load-side disconnecting section, respectively. The present invention relates to a double-bus type closed switchboard having a dual-bus type closed switchboard.

A conventional example of a double-bus closed switchboard having an upper busbar and a lower busbar is shown in FIG. In the figure, 1 is a closed switchboard, 2 is an upper bus bar, 3°3a is a current transformer for measuring instruments, and 4 is a closed switchboard.
is the cable head, 5 is the lower busbar, 6 is the upper busbar chamber, 7
is the disconnection section for the upper busbar, 8Fi is the disconnection section for the upper circuit, 9 is the disconnection section for the lower circuit, 1O is the disconnection section for the lower busbar, 11 is the lower busbar chamber, 12 is the shutter for the upper disconnection section, 13 is the lower A shutter for the side disconnection section, 14 is a breaker, 15 is a middle partition wall,
16 is an upper breaker chamber, and F is a lower breaker chamber.

In this way, in the double-bus type closed switchboard 1 having the upper bus bar 2 and the lower bus bar 5, the connection between the lower bus disconnect section 10 and the lower circuit disconnect section 9 and the breaker 14 is made using the breaker 14. The closed switchboard 10 is shown as a solid line in the figure.
It was installed and connected on the floor. The connection between the upper bus disconnect section 7 and the upper circuit disconnect section 8 with the breaker 14 is achieved by moving and installing the breaker 14 in the upper circuit breaker chamber 16 as shown by the two-dot chain line in the figure. was connected.

By the way, in such a connection, the upper breaker chamber 16 must be made the same size as the lower breaker chamber 17, which increases the size of the closed switchboard 1 and makes it difficult to move the breaker 14 to the upper breaker chamber 16. In this case, the breaker 14 had to be moved at least above that height, which was difficult and required many man-hours.

The present invention has been made in view of the above points, and its object is to provide a double-bus type closed switchboard that can be miniaturized.

That is, the present invention connects either the load-side disconnector or the busbar disconnector to a roller guide having a breaker having a width larger than the width of the breaker and provided on the floor within a closed switchboard. Alternatively, it is characterized in that it is moved in and out along a roller guide provided at a position higher than the floor surface and lower than the load-side disconnecting section.

The present invention will be explained below based on the illustrated embodiments. An embodiment of the invention is shown in FIGS. 2-6.

Note that parts that are the same as those in the conventional model are given the same reference numerals, and therefore their explanations will be omitted. In this embodiment, the load side disconnection section 18 (current transformer integrated disconnection section) and either one of the busbar disconnection sections 7, 10 are connected to
The breaker 22 has a width W larger than the width W1 of the breaker 22, and a roller guide 30.30 is provided on the floor of the closed switchboard la, or higher than this floor, and the load side disconnecting section 18 Roller guide 23 installed at a very low position.
It was designed to move in and out along line 23a for contact and separation. By doing this, the load-side disconnect section 18 and the upper bus-bar disconnect section 7 or the load-side disconnect section 18 and the lower bus-bar disconnect section 10 can be connected without moving the breaker 22 above its height as in the conventional case. Since it is now possible to connect the two sides, there is no need to provide an upper breaker chamber, and a double bus type closed switchboard that can be made smaller can be obtained.

That is, when selecting the circuit on the lower busbar 5, the roller 29 of the circuit breaker 22 should be inserted along the roller guide 30° 30a attached to the floor as shown by the solid line in the figure. (See Figures 1 and 3) The lower busbar disconnecting section 10 and the load side disconnecting section 18 are connected via a breaker 22.

On the other hand, when selecting the upper busbar 2, move the roller 29 of the circuit breaker 22 above the floor by DH and below the load-side disconnect section 18, as shown by the two-dot chain line in the figure. The second
3), the upper busbar disconnecting section 7 and the load side disconnecting section 18 are connected via a breaker 22.

The circuit breaker 22 is connected to each of the disconnecting sections 7 and 10.degree. 18 in the following manner.

When connecting the breaker 22 to the lower bus bar 5 by positioning it as shown by the solid line in the figure, the breaker 22 must be connected to the roller guide 3.
0, 30a, the shutter lever 27, which is rotatably attached to the lower part of the shutter rod 32, is driven by the guide roller 28 attached to the left side of the breaker 22 and moves upward, so that the shutter rod The shutter 21 fixed with the bolt 32 and the bolt 34 and the shutter 20 supported by the support metal fitting 33 on the shutter rod 32 both move upward to open the openings of the lower busbar disconnect section 10 and the load side disconnect section 18. Thereby, the breaker 22 is connected to the load side disconnecting section 18 and the lower busbar disconnecting section 10. In this case, the seventh rod 36 on the right side of the figure is left free to serve as a guide for the shutter 20.21 (see Figures 4 and 6), but the shutter 19 is fixed with a bolt 34a (the fourth (See figure) Since it does not move, the opening of the upper busbar disconnecting section 7 remains closed by the shutter 19.

When connecting the breaker 22 to the upper busbar 2 by positioning it as shown by the two-dot chain line in the figure, the breaker 22 must be connected to the roller guide 2.
3, 23a, it is driven by a guide roller 26 attached to the right side of the shield cutter 22,
Since the shutter lever 25 rotatably attached to the shutter rod 36 moves upward, the shutter 19 fixed to the shutter rod 36 by the pin 34a and the shutter 20 supported by the support fitting 33a move upward together. , open the openings of the upper busbar disconnecting section 7 and the load side disconnecting section 18. Thereby, the breaker 22 is connected to the load-side disconnecting section 18 and the upper bus-bar disconnecting section 7.

In this case, the shutter rod 32 on the left side of the figure is left free to guide the shutter 19, 20 (see FIGS. 4 and 5), but the shutter 21 is
4 (see FIG. 4) and does not move, the opening of the lower busbar disconnector 10 remains closed by the shutter 21.

Since the upper bus bar 2 and the lower bus bar 5 can be switched in this way, it is possible to work within a wide space, making the work easier and reducing the number of work steps.

In these figures, 24 is the breaker room, '31, 3
1a, 35, and 35a are rod guides, and Hl is the height from the floor to the load-side disconnecting section 18.

As described above, in the present invention, the breaker is inserted along the roller guide provided on the floor or at a position lower than the load-side disconnection section, and the load-side disconnection section and either side of the busbar disconnection section are brought into contact with or separated from each other. As a result, the breaker can be connected and disconnected without having to move it above that height as in the conventional case, eliminating the need to provide an upper busbar room and making it possible to downsize the breaker. A heavy bus type closed switchboard can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional double-bus closed switchboard, and FIG. 2 is a side view of an embodiment of the double-bus closed switchboard of the present invention.
Figure 3 is a cross-sectional view taken along A-h scarlet in Figure 2, and Figure 4 is a cross-sectional view along line A-h in Figure 2.
A cross-sectional view taken along line B-B in the figure, Figure 5 is c-cm in Figure 4.
FIG. 6 is a cross-sectional view taken along line DD in FIG. 4. 1a...Closed switchboard, 7...Disconnection section for upper busbar, 1
0...Lower bus disconnection section, 18...Load side disconnection section,
22°°°L+@rt,・′°・′°“-cx-'yi
j4" (provided at a position higher than 0" - and lower than the load-side disconnect section), 30.30a...Roller guide (provided on the floor) 1, W! ...Width of breaker.

Claims (1)

[Claims] 1. A load-side disconnect section provided in the closed switchboard, upper and lower bus disconnect sections disposed above and below the load-side disconnect section, and disconnecting sections that go into and out of the closed switchboard to connect the load-side disconnect section and the load-side disconnect section. In a double-bus type closed switchboard having a breaker that connects and disconnects either one of the upper and lower bus-bar disconnecting parts, the load-side disconnecting part and either one of the bus-bar disconnecting parts, The breaker has a width larger than the width of the breaker, and is provided on a roller guide on the floor of the closed switchboard or at a position higher than the floor and lower than the load-side disconnecting section. A double-bus type closed power distribution board characterized by being connected and separated by moving in and out along a roller guide.