JPS6039932Y2 - Insulated conductor of bus duct - Google Patents

Description

[Detailed description of the invention] The present invention relates to a strip-shaped conductor with an insulation coating used in bus ducts of the conductor-contact type or phase-to-phase reduction type, and is particularly suitable for insulation coating processing of large-sized conductors with a large rated current. The purpose is to do it easily and reliably.

The thickness of the insulation coating for this type of conductor is 1.0 in the case of a single layer.
Trrln or more, and in the case of two layers, it is specified to be 0.5 mm or more.

This is to prevent pinholes from connecting in the thickness direction in any cross section of the coating, and in the case of a two-layer coating, it is determined that the pinholes in each layer will match and will not connect. It is based.

Therefore, from the viewpoint of electrical safety and manufacturing cost, two or more layers of insulating coating are generally used.

That is, a single insulating film is wrapped around the bare conductor, and both ends of the film are overlapped and fixed with adhesive or tape.

Then, in order to strengthen the insulation, the top of the film is wrapped in multiple layers using the same method, but until the edges of the film are glued together, the film must be held down so that it does not shift or roll up. Processing is troublesome.

Another covering method is to wrap the bare conductor with a single large piece of insulating film, but in this case, the conductor is turned over while wrapping the film, so when the conductor is large, it requires a large number of people to wrap the conductor. It requires a lot of work, is hard labor, and has poor work efficiency.

This proposal was proposed in view of the above points, and includes a pair of insulators with a vertically elongated U-shaped cross section that covers one side and both plate thickness surfaces of a strip-shaped conductor, and It is characterized in that the entire circumference of the strip-shaped conductor is covered by a pair of insulators having an oblong U-shaped cross section and covering the surface.

Next, FIG. 1 showing an embodiment of the present invention will be described.

1 is a strip-shaped conductor made of copper, aluminum, etc., 2,
3 is an insulator with a vertically long U-shaped cross section, 4.5 is an insulator with a horizontally long U-shaped cross section, and these insulators 2 to 5 are made of a polyester film having high mechanical strength and high electrical insulation, for example. It is made.

The pair of insulators 2 and 3 having a vertically elongated U-shaped cross section cover the entire circumference of the conductor 1, and extend along the horizontal side 21 on the thickness plane of the conductor 1.
．． 31 are dimensioned so that they completely overlap each other in an alternating manner.

The pair of insulators 4 and 5 having a horizontally long U-shaped cross section further cover the conductor 1 covered with the vertically long U-shaped insulators 2 and 3, and have long horizontal sides along both sides of the conductor 1. The portions 41 and 51 are formed with dimensions such that they alternate and completely overlap.

As shown in Figure 2, the vertical U-shaped insulators 2 and 3 are connected to the conductor 1.
They are stacked facing each other from left and right, and their lateral sides 21 and 31 are stacked alternately.

Next, the oblong U-shaped insulators 4 and 5 are fitted and covered from above and below the conductor 1 so that their horizontal sides 41 and 51 are alternately overlapped, and each end edge 42 of the oblong U-shaped insulators 4 and 5 is covered. .5
2 is fixed with adhesive or tape.

Figure 3 shows vertically long U-shaped insulators 2 and 3 and horizontally long U-shaped insulator 4.
, 5 are reversed from the case of the example shown in FIG.

In the embodiments shown in FIGS. 1 and 3, the pair of vertically long U-shaped insulators 2 and 3 and the pair of horizontally long U-shaped insulators 4 and 5 are formed to have the same dimensions and are stacked alternately. , as shown in FIG. 4, a pair of vertically long U-shaped insulators 2 and 3,
Alternatively, the pair of oblong U-shaped insulators 4 and 5 may be made to have different sizes and be fitted inside and out.

In this case, both edges of the outermost U-shaped insulator are fixed.

Since the insulated conductor of the present invention has the above-mentioned structure, the entire circumference of the conductor 1 is covered in three layers by the combination of the two sets of U-shaped insulators 2, 3 and 4, 5, resulting in high safety.

The insulation coating process is carried out by supporting both ends of the conductor 1 with a stand, etc., and placing it in a floating state, or by placing it on a workbench.
The conductor 1 can be covered by simply fitting two sets of U-shaped insulators 2, 3 and 4.5 onto the conductor 1.

Further, the U-shaped insulator can be fixed by simply fixing the outermost edge.

Therefore, the work is simpler than the conventional insulation coating process by wrapping an insulating film, and even when the conductor size is large, the work can be performed safely and the work efficiency is improved.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the insulated conductor of the present invention, FIG. 2 is a perspective view showing how to cover the formed insulator, and FIGS. 3 and 4 are cross-sectional views of other embodiments. 1 is a conductor, 2 and 3 are insulators with a vertically U-shaped cross section, 4,
5 is an insulator with an oblong U-shaped cross section.

Claims (1)

[Scope of utility model registration request] a pair of insulators with a vertically long U-shaped cross section that covers one side and both plate thickness surfaces of the strip conductor; and a pair of insulators with a horizontally U-shaped cross section that covers both sides and one of the plate thickness surfaces of the conductor. An insulated conductor for bus ducts that is triple-layered around the entire circumference of a strip-shaped conductor.