KR920003086Y1 - Bar for insulating - Google Patents

Abstract

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Description

Insulation support

1 is a front view (FIG. 1A) and a side view (FIG. 1B) showing a fixing frame for housing a breaker according to an embodiment of the present invention.

Figure 2 is a detailed view of the insulating support mounting portion according to an embodiment of the present invention.

3 is a front view of the insulating support according to an embodiment of the present invention.

4 is a cross-sectional view taken along line A-A of FIG.

Figure 5a is a cross-sectional view B-B of FIG.

5b is a cross-sectional view taken along line C-C in FIG.

6 and 7 are detailed views of the insulating support according to another embodiment of the present invention. FIG. 6A is a plan view, FIG. 6B is a front view, FIG. 6C is a bottom view, FIG. 6D is a side view, and FIG. 7A is a AA of FIG. 6B. 7B is a sectional view taken along the line BB of FIG. 6B, FIG. 7C is a view taken along the line CC of FIG. 6, and FIG.

FIG. 8 is a usage indication diagram different from FIG. 1 which is an insulating support of the present invention, and FIG. 8A is a front view, FIG. 8B is a side view, and FIG. 8C is a plan view.

Figure 9 is a side view showing the arrangement of the hole for the installation of the insulating support bored in the fixed frame side plate according to another embodiment of the present invention.

10 is a side view showing an insulating support and a main circuit terminal installation state of the main circuit terminal horizontal arrangement according to the embodiment;

FIG. 11 is a side view showing an insulating support and a main circuit terminal installation state of the main circuit terminal vertical arrangement according to the embodiment; FIG.

12A and 12B are front and side views showing a breaker accommodation fixing frame of a conventional main circuit terminal horizontal arrangement.

13A and 13B are front and side views of a circuit breaker housing fixing frame of a conventional main circuit terminal vertical arrangement.

* Explanation of symbols for main parts of the drawings

3: upper main circuit terminal 4: lower main circuit terminal

7: Insulation support 7a: Installation worker

7b: through hole 7c: beam

7d: fold 7e: central goal of the beam

7f: hole

This invention relates to an insulating support for use in a fixed frame for breaker storage of a drawout type breaker.

12 is a front view (FIG. 12A) and a side view (FIG. 12B) of a conventional breaker housing fixing frame using an insulator, in which 1 is a fixing frame for breaking a circuit breaker and 2 is an insulator of the fixing frame 1 An insulator insulated as a bolt to the support 1d, 3 is an upper main circuit terminal bolted to the insulator 2, 4 is a lower main circuit terminal, and 5 is housed in a fixing frame 1 for circuit breaker storage. 6 is a main circuit contactor installed at the terminal end of the breaker.

In the figure, 1a is a bottom plate of the fixed frame 1, 1b is a rail welded to the bottom plate 1a, 1c is a side plate welded to the rail 1b, and 1d is an insulator support welded to the side plate.

FIG. 13 is a front view (FIG. 13A and 13B) of a conventional circuit breaker accommodation frame in which the main circuit terminals 3 and 4 of the fixing frame 1 are disposed in the vertical direction. Fixed frame for circuit breaker storage, 7 is an insulated case in which an in-phase fixed by bolts (not shown) is insulated from the insulated case support 1e of the fixed frame 1, and 3 and 4 are insulated cases 7 The upper main circuit terminal 3 and the lower main circuit terminal 4 fixed with bolts (not shown) and arranged in the vertical direction of the terminal drawing are shown.

In the figure, 1e is an insulating case support welded to the side plate 1c of the fixed frame 1.

Next, the configuration of the main circuit terminal of the fixed frame for a circuit breaker housing will be described.

12 is manufactured as a general type, and main circuit terminals 3 and 4 provided in the fixed frame 1 are arranged in the horizontal direction.

In the structure of the fixed frame of the release type, the bottom plate 1a, the rail 1b, the side plate 1c, and the insulator support body 1d are welded together, and the insulator is insulated from the insulator support body 1d of the fixing frame 1. (2) is bolted vertically.

The main circuit terminals 3 and 4 are similarly fixed to the insulator by bolts.

The main circuit contactor 6 is installed at the terminal end of the main block 5 and the main circuit contactor 6 is connected to the main circuit terminal 3 of the fixed frame 1 by installing the breaker 5 in the fixed frame 1. ), (4).

The fixed frame 1 is housed in a switchboard, and the switchboard side conductor or power cable is connected to the main circuit terminals 3 and 4 of the fixed frame 1.

As shown in FIG. 13, the main circuit terminals 3 and 4 provided in the fixed frame 1 are arranged in a vertical direction, and the mold is manufactured to be accommodated in a power distribution base having a reduced front and rear direction.

The structure of the fixed frame of the release is integrally formed by welding (1a), rail (1b), side plate (1c), and insulating case support (1e), and insulating case (7) is bolted to the insulating case support (1e). It is fixed.

The main circuit terminals 3 and 4, which are bent at right angles, are fixed to the insulating case 7 by bolts, and the leading directions of the main circuit terminals 3 and 4 are vertical.

In addition, the circuit breaker 5 accommodated in the fixed type frame is the same as that of the horizontal arrangement of the main circuit terminals of the general type (shown in FIG. 1).

Conventional insulation supports have a large number of parts because each phase and each pole are formed independently of each other as insulation insulators, and require dimensional adjustments between terminals.

In addition, the conventional fixed frame for circuit breaker storage has two types of main circuit terminal arrangements, horizontal and vertical, and since the structure of the fixed frame is completely different, inventory of parts, etc. is required separately, and there are problems in delivery, specification change, and procurement of parts. It was happening a lot.

The present invention aims to solve the problems as described above, and to use the three-phase insulated support, to reduce the number of parts, to improve the assemblability and reduce the cost.

In addition, the goal is to obtain a fixed frame for circuit breaker storage that is simple in structure and consequently small in size.

It is also an object of the present invention to obtain a fixed frame for housing a circuit breaker that has the same configuration of the fixed frame and can cope with the horizontal verticality of the main circuit terminal arrangement.

The insulation support of this invention uses a three-phase, one-piece insulation support, and a terminal through hole is provided in this insulation support, and an insulation fold is installed between the phases and the ground to form the beam shape of the insulation support. The shape of the insulating folds is rectangular or square, or it is a hole which is completely drilled between the insulating folds in order to secure mechanical strength and electrical insulation strength with less material.

In addition, the insulating support for the eye is formed of three phases, and the two sides of the insulating support are sandwiched.

In addition, the fixed frame for circuit breaker storage according to the present invention can be easily changed by changing the installation position and the direction of the insulating support, while the members other than the terminal are shared with respect to the horizontal terminal arrangement and the vertical terminal arrangement.

The insulating support according to the present invention can be sufficiently miniaturized between the phase and the ground by the H-shape of the beam and the hole provided between the insulating fold and the insulating fold, so that the size can be reduced.

Moreover, since the recessed part between insulation folds is provided with the fully perforated hole, reliable insulation can be expected for a long time, without water droplets clumping even under the bad conditions of an installation environment.

In addition, the H-shape of the beam and the hole in the fold portion can reduce the material, reduce the weight, and reduce the cost.

In addition, the insulating folds are formed in a rectangular or square shape so that the cross-section of the folds can be used as a reference plane for installing the insulating support.

In addition, the insulation support by the eye is combined with the strength support of the fixed frame and the support of the main circuit conductor.

In addition, the insulation support according to this design is three-phase, one-piece, common for the upper and lower parts and can be arranged independently, and the side plate of the fixed frame is provided with mounting holes for horizontal terminal arrangement and vertical terminal arrangement to fix the side plate with bolts. It is structured to be able to do it.

The following describes an embodiment of this invention by the drawings.

1 is a front view (FIGS. 1a and 1b) of a fixed frame for circuit breaker storage using an insulating support according to the present invention, 1 is a fixed frame for circuit breaker storage, and 7 is a bolt on the side plate 1c of the fixed frame. Insulation support of three-phase one body fixed by the 3, 4 is the upper main circuit terminal and the lower main circuit terminal bolted to this insulating support, 5 is the blocking main body accommodated in the fixing frame (1), 6 is a circuit breaker This is a main circuit contactor installed at the terminal end of (5).

In the figure, 1a is welded to the bottom plate of (1) of the fixed frame, and 1b to the rail bottom plate 1a.

2 is a detailed view of the installation portion of the insulating support (7), 3 is the upper main circuit terminal, 7 is an insulating support, 8a is a bolt for fastening the insulating support 7 to the side plate (1c) of the fixed frame (1), 8b is a bolt for fastening the upper main circuit terminal 3 to the insulating support 7, and 9 is a nut for fixing the terminals 3, 4 with a bolt 8b.

Figure 4 is a view of the insulating support from the front, 7a is a mounting portion of the insulating support to be installed on the side plate (1c) of the fixed frame, 7b is a through hole through the main circuit terminals (3), (4), 7c denotes a beam of an insulating support, 7e denotes a central valley of a cross-sectional H-shaped beam, and 7d denotes an insulating fold which increases the creepage distance to the phase and the ground.

4 is a cross-sectional view of the insulating support A-A cross-sectional view in FIG. 3, and FIG. 5 is a cross-sectional view of B-B in FIG. 5 shows that the shape of the fold 7d is in the forward direction.

Next, an embodiment of this invention will be described.

The structure of the fixed frame is shown in FIG. 1, and the side plate 1c which can be configured by bolts on the rail 1b and the integrated body to which the base plate 1a and the rail 1b are welded, A three-phase, one-piece insulated support 7 and the terminals 3 and 4 in which the inside of the insulated support 7 can be fixed to the insulated support 7 with bolts 8a are configured.

This insulation support 7 is required to secure the insulation between the ground and the phase, and the insertion force at the time of inserting the circuit breaker 5, the electric power at the opening and closing operation of the circuit breaker, and the strong electromagnetic force at the time of energizing the short circuit. It is also required to have sufficient strength to withstand.

For this reason, the shape of the insulating support 7 was made into the shape shown to FIG. 3 thru | or FIG.

Basically, the shape of the beam 7c of the insulating support 7 is H-shaped as shown in the cross-sectional view of FIG. 5 to secure mechanical strength, and the recessed portion of the center of the H-shape effectively acts on the insulation creepage distance between the phases and the earth. In other words, the main circuit terminals are arranged at positions where the creepage insulation distance can be long.

Therefore, as to the insulation creepage distance, as shown in Fig. 4, sufficient distance can be given for each insulation creepage distance between the earth: EL or insulation creepage distance between the objects: PL.

In addition, since the shape of the fold 7d is square, it can be placed when stored in the factory of this insulating support, can be stacked in multiple stages, and many members can be stored in a smaller capacity than the circular shape.

In the above embodiment, the example applied to the storage frame of the circuit breaker is shown, but the present invention is not limited thereto, and the same effect as the above embodiment can be obtained even when used for bus support arranged in the switchboard.

In the above embodiment, a square example is shown as the shape of the fold 7d, but even in the square, the same effect as in the above embodiment is obtained.

In the above embodiment, the main circuit terminal through hole 7b is provided and the main circuit terminals 3 and 4 are fixed to the insulating support 7 with bolts 8b. , (4) may be an integral molding or an integral mold in which the insulating support 7 is embedded.

In this case, the insulating support 7 is designed so that the same pole of each phase has a three-phase one-piece structure, and is designed to be symmetrical, and the same product is divided up and down and sandwiched by the side plate 1c.

Next, another embodiment according to the present invention will be described with reference to FIGS. 6 to 8.

6 and 7 show detailed views of the insulating support in this embodiment, in which Fig. 6a is a plan view, Fig. 6b is a front view, Fig. 6c is a bottom view, Fig. 6d is a side view, and Fig. 7a is a cross-sectional view of Fig. 6b. 7B is a cross-sectional view taken along line BB of FIG. 6B, FIG. 7C is a cross-sectional view taken along line CC of FIG. 6B, and FIG. 7D is a cross-sectional view taken along line DD of FIG.

FIG. 8 is a view showing usages different from those of FIG. 1 of the insulating support of this embodiment, FIG. 8A is a front view, FIG. 8B is a side view, and FIG. 8C is a plan view.

In the above angles, the same parts as those in FIGS. 1, 3, and 4 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, as shown in Figs. 6 and 7, in the same direction as the through hole holding the conductor in the central valley 7e, which is the H-shaped recess of the inter-fold beam of the insulated folds provided between the phases and the ground. A through hole 7f is formed.

When the insulating support is used in the direction shown in Fig. 8, the cross section H-shape of the beam 7c is squeezed to the side to prevent the fouling material or moisture from accumulating on the central bone 7e, thereby maintaining the creeping insulation strength. In addition, the weight of the insulating support can be reduced.

Next, another embodiment of the present invention will be described with reference to FIGS. 9 and 10.

9 is a diagram showing the installation of the insulating support 7 installed in the fixed frame side plate 1c of this embodiment, where Aa and Ab are the installation of the insulating support 7 in the horizontal arrangement of the terminals 3 and 4. Balls, Ba and Bb indicate the installation holes of the insulating support 7 in the vertical arrangement of the terminals 3 and 4.

10 and 11 are side views showing installation states in the horizontal arrangement and the vertical arrangement of the terminals 3 and 4, respectively. 8a is a bolt for fixing the insulating support 7 to the side plate 1c of the fixing frame. , 8b denotes a bolt for fixing the upper main circuit terminal 3 to the insulating support (7).

9 is a nut installed in the insulating support 7.

Next, the structure of the fixed frame by this Example is demonstrated.

The fixed frame 1 shown in FIG. 1 and FIG. 2 is the same product, and consists of the integral part by which the rail 1b was welded to the base plate 1a, and the side plate 1c which can be fixed to the rail 1b with the bolt. It is.

In addition, the insulating support 7 is a three-phase, one-piece structure, which is designed to be symmetrical to the left and right, and has a structure that can be bolted to the side plate 1c.

The main circuit terminals (3) and (4) have a straight shape for terminal horizontal placement and a 90 ° bend for vertical placement.

As for the arrangement of the terminals 3 and 4, the circuit breaker of the main circuit terminals 3 and 4 is changed by rotating the installation direction of the insulating support 7 by 90 degrees as shown in FIGS. (5) When the tip of the side is vertically aligned with that of the terminal horizontal arrangement, it should be fixed to the same position.

By changing only the members of the main circuit terminals 3 and 4 by this method, it is possible to simply switch the vertical arrangement or the horizontal arrangement of the main circuit terminals.

In the above embodiment, the storage frame of the drawout type circuit breaker has been described, but the present invention also applies to other switching devices such as a magnetic contactor.

In this description, the configuration as a storage frame for storage is described, but the same effects as in the embodiment are also obtained when the main circuit terminals are arranged in the same manner directly in the switchboard.

As described above, according to the present invention, since the beam of the insulating support has an H-shape, the insulation creepage distance can be sufficiently secured by the combination with the insulating fold, so that the insulating support becomes small and light in weight, resulting in an inexpensive manufacturing cost. .

In addition, since the shape of the insulating folds is rectangular or square, it can be used as a reference plane for cross-section installation work and can be stacked side by side during storage.

In addition, the present invention eliminates the metal support for the main circuit conductor support by integrally insulating the support, thereby providing an apparatus that is compact and easy to manufacture.

According to this design, since the fixed frame and the insulating support are shared, the horizontal and vertical arrangement of the terminals can be easily changed by simply changing the member of the main circuit terminal.

Further, since the insulating support is bolted to the side plate, there is no need to weld the insulator support insulation case support and the like to the side plate as in the prior art.

Claims (7)

In the insulating support 7 which collectively supports at least two conductors arranged in parallel with each other at intervals, the insulating support 7 has an H-shaped beam 7c in cross section and an installation portion 7a at both ends thereof. And a through hole 7b holding the conductor at intervals in the center valley 7e of the beam 7c, between the through holes 7b, and between the through holes 7b and the mounting portion. Insulation support, characterized in that a plurality of insulating folds (7a) are provided perpendicular to the longitudinal direction of the beam (7c) protruding from the outer periphery of the beam (7c) to the electric pole. 2. Insulation support according to claim 1, characterized in that the insulating fold (7d) is quadrangular. The insulating support according to claim 1, wherein a hole (7f) is formed in a center hole (7e) which is an H-shaped recess of the inter-insulation interbeam beam (7c). The insulating support according to claim 1, wherein the insulating support (7) is formed into a mold (or molding) as an insulator to form a three-phase unitary body. The insulating support according to claim 4, wherein the insulating support (7) is integrally formed at each pole of each phase, and is laminated to the side plate by separating the upper and lower parts. The insulating support according to claim 1, wherein the insulating support (7) is fixedly supported at both ends at an arbitrary position among a plurality of predetermined positions rotated by a predetermined angle about its longitudinal direction. 7. The insulated support according to claim 6, wherein the insulated support (7) is fixedly supported at a position where the supporting direction of each conductor is horizontal or vertical.