JPS60106306A - Insulating supporting device of vertical bus of control center - 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 TECHNICAL FIELD OF THE INVENTION This invention relates generally to control centers, and more particularly to insulating support devices for vertical bus bars of control centers.

Generally, in a control center that houses a large number of control units, vertical busbars for eight phases are arranged near the center of the cross section of one box. The above-mentioned busbar has a Z-shaped cross section in order to have a large elasticity that can withstand electromagnetic forces caused by short circuits and the like.

[Prior art]

An example of a conventional insulating support device for the Z-shaped time busbar is disclosed in Japanese Utility Model Publication No. 58-9477. The insulating support used above has only the legs of the 1mff1 line extending in front and behind the control center.

By the way, for single-sided control centers where the control unit is not housed on the back side, in order to save material for the bus bar, the rear part, where the control unit is not plugged in, is set to '+tG < It is desirable to have an L-shaped time face, but the conventional insulating support described above cannot hold the bus bar of the L-shaped time face.

In addition, in order to increase the current valley meter on the Z-shaped time face, a rectangular cross-section generatrix was superimposed on the middle part of the front leg and the rear leg and bolted to each other. For this reason, there is a drawback that a complicated work process is required.

[Summary of the invention]

This invention was made to eliminate the above-mentioned drawbacks, and includes an insulating support having a protrusion that compresses the middle part of a two-shaped time face or an L-shaped cross section, and a protrusion that regulates the left and right direction of the middle part. It is an object of the present invention to provide an insulating support device for a vertical busbar of a control center that can eliminate the drawbacks of the conventional devices.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 11 to 6. □□□ indicates the entire double-sided control center, which is usually installed in many rows. ＠ is a control unit, and this control unit ＠ is housed in multiple stages inside the control center box and is divided into friend unit compartments, α
→ is a vertical wiring section.

A cross section of the control center QQ is shown in Figure 2 (4
) is the corner column, ■D is the unit section and vertical line section α
The intermediate column (A) is placed at the boundary with A, and (A) is a vertically mounted column placed in the middle in the depth direction. The above corner pillar (a),
The intermediate column e〃 and the vertical mounting frame (support) are connected at the top and bottom by a horizontal frame @. @Isolate each unit section IJMoat control unit (2) QJ he, (25a) f
- This is a guide rail formed by J1 at the end of the J partition plate.

Next is the representative &+l? The configuration of the Ml unit (2) will be explained. 01) is the left and right side plates (81a), the back plate (g
tb), a U-shaped unit case 04, a horizontal member connecting the left and right side plates (81a), and a fetus storage member (33).

(c) is a mounting rail provided on the outer surface of the unit cane side plate (aia). Unit case back plate (81
b) is a connector (2) for plug-in connection with the vertical bus bar.
) is provided. In addition, the instrument mounting board is provided with a circuit breaker (to), an electrical switch 01), a pane opening (c), and the like. Gutter 6 is an operating handle device for operating the hardwired circuit breaker (G) from outside the control unit. ' The third vertical busbar is disposed within a straight busbar section Qbj formed by the vertical mounting frame board and the unit case back plate (81b). The vertical bus line ω is the control center (10
an intermediate portion (50a) parallel to the front surface of the intermediate portion (50a);
A nearly two-character shape with a front leg (50b) that is bent at right angles from a) and then folded back, and a rear leg (50Q) that is bent in the opposite direction to the front leg (50b) and folded back in the same way. It is structured in a cross section. Above front leg (5o
b) The control unit and soto connectors (2) are plug-in connected to the rear leg (50 (3)) from the front and rear.

In the case of a single-sided control center in which the control unit (2) is not housed on the rear side, the vertical generatrix can be configured in an L-shaped cross section without a rear leg (500).

The three-phase vertical busbar Φ is sandwiched between two front and rear insulating support rings extending horizontally.

The insulating support ring forms one wall of the busbar groove υ for receiving the front leg part (50b) or the rear leg part (500) of the busbar, and the busbar groove, and comes into contact with the surface of the middle part (50a) of the busbar. and a side protrusion 6η that forms the other wall of the generatrix groove (61) and extends to the rear of the intermediate portion (50a) of the generatrix. The side protrusions located in mutual relation have sloped surfaces and are continuous with the intermediate protrusion I6, so that the side protrusions 6'3I do not collide with each other when the two are combined. A zigzag gap is formed between each stitch, and as a result, a large creeping insulation distance #L can be secured.

A circular recess MI7) is formed in each of the side protrusion and the ring. Mis [present] is a cylindrical protrusion arranged symmetrically so that when a pair of insulating supports face each other, each circular recess also fits into η.

Due to the combination of the circular recess mea and the cylindrical projection -β9, the bolt member passing therethrough is insulated from the bus bar. There is a horizontal U-shaped groove Q on the back side of the busbar groove O'JJ of the insulation support.
It is equipped with 0, and a supporting metal fitting or holder is disposed therein. Above and below the U-shaped groove 4, a deep thin groove Q core close to the busbar groove Oυ is formed, and a large creeping insulation distance is provided between the support fitting (a) 61) and the busbar gauze. The support fitting-6 generally has a groove hub cross section.

The support bracket is fixed to the vertical mounting frame of the control sensor box. The support fitting ■Cυ is tightened by the bolt part #A ring. And the above insulation support ■, support metal fitting ■Q3
]) At least two or more sets of the assemblies are arranged at intervals in the longitudinal direction of the generatrix.

The current capacity of the vertical busbar φ can be increased by overlapping a busbar 61) with a rectangular cross section on the intermediate portion (50a) as shown in FIG. The vertical busbar - and the rectangular busbar Ii5) are connected to the intermediate protrusion +6 of the insulating support - via the support member (a) 6
Contact pressure can be obtained by compressing with 2.

To ensure this, a bolt member Q◇ is added between the phases. One edge in the width direction of the rectangular busbar is in contact with the inside of the front leg portion (501) of the vertical busbar, and the other edge in the width direction is in contact with the side projection embroidery of the insulating support or -. With the above configuration, the rectangular bus bar Q5υ does not move or curl even if electromagnetic force is applied due to a short circuit accident, and there is no need to directly bolt it to the vertical bus bar as in the past.

Further, as another embodiment of the present invention, as shown in FIG. 6, two vertical generatrix @f7f having a truncated cross section can be used back to back. Then, as described in Figure 5, both 62
4521 allows electrical contact to be made without bolting and assembly, and is held firmly.

In addition, according to the embodiment of the present invention, (a) it is configured to hold the leg portions of the vertical generatrix and compress its intermediate portion, so it can be used with both vertical generatrixes with an L-shaped cross section and a Z-shaped cross section. .

(1)) The height of the insulating support (H) (1411) can be reduced because the supporting member is completely enclosed in a large creepage distance with the generatrix by horizontally deep thin grooves above and below the U-groove in which the supporting member is housed. This can reduce interference between the control unit and the connector on the bottom, which is advantageous for downsizing the control unit (reducing product size).

〔Effect of the invention〕

As described above, in this invention, the Z
This has the effect of providing an insulating support device for a bus bar that can easily assemble a bus bar with a letter-shaped cross section or an L-shaped cross section, and that can firmly hold and fix the bus bar.

[Brief explanation of the drawing]

The figures are for explaining a busbar insulating support device according to an embodiment of the present invention, and FIG. 1 is a perspective view of a control center;
Figure 2 is a sectional view taken along the line u-n in Figure 1, Figure 8 is a plan view of the insulating support device for the vertical bus bar, Figure 4 is a perspective view of the above insulation support, and Figure 5 is the same as Figure 8. FIG. 6 is a plan view showing another embodiment corresponding to FIG. 8. FIG. 6 is a plan view showing another embodiment corresponding to FIG. In the figure, the head is the control center, @ is the control unit, the force is the Z-shaped vertical busbar, (50a) is the middle part, (50
1)) is the front leg, (50Q) is the rear leg, @〃 is the rectangular busbar, 62 is the L-shaped vertical busbar, Z is the insulating support, wholesale) is the busbar groove, the ring is the intermediate projection, - the ring is the side projection, (c) is a thin groove, and 6η is a support member. Agent Masuo Oiwa

Claims (3)

[Claims] (1) A box body is equipped with a plurality of vertical busbars located in parallel at intervals, and the vertical busbars have an intermediate part parallel to the front of the box body and a leg part perpendicular to the intermediate part. In a control center configured to be plug-in connected to a plurality of control units stacked and housed in a box, the vertical bus bar leg has an L-shaped cross section or a double-shaped cross section. The vertical busbar is sandwiched between two insulating supports at the front and back, which are spaced apart in the longitudinal direction, and each of the insulating supports includes at least a busbar groove that receives the legs of the vertical busbar, and one wall of the busbar groove. an intermediate protrusion that abuts and compresses the intermediate portion of the vertical generatrix; and a side wall that forms the other wall of the generatrix groove and extends deeper than the intermediate portion of the vertical generatrix; An insulating support device for a vertical bus bar of a control center, comprising support fittings arranged on the back side of the control center and connected so as to be tightened from the front and back. (2) The rectangular busbar superimposed on the middle part of the vertical busbar is restricted from moving in the left-right direction by the vertical busbar legs and the side protrusions of the insulating support, and is supported by compression by the intermediate protrusion of the insulating support. 2. An insulating support device for a vertical bus bar of a control center according to claim 1, wherein an electrical contact pressure is obtained by applying the electrical contact pressure. (3) The above-mentioned support fitting is disposed in a U-shaped groove formed on the back surface of the insulating support, and the above-mentioned U-shaped groove is provided with thin grooves that are tangent to the generatrix groove above and below. An insulating support device for a vertical bus bar of a control center according to claim 1.