JPH029107A - Transformer - Google Patents

Abstract

PURPOSE:To lower the whole height by connecting lead wires of a secondary coil of a transformer content respectively to the connecting conductor of each phase part arranged horizontally which becomes respective different height positions on the upper part of the transformer content of each stage. CONSTITUTION:Three connecting conductors 16 of each phase part which are positioned on the rear side B of a transformer content 13 of lower stages and arranged thereon horizontally are attached to a supporter 17 attached to both the end parts of an iron core 13a so as to be a different height positions through respective three insulators 17a. Three lead wires 18 of the secondary side of coil 13b of the transformer content 13 are connected to the conductor 16. Three connecting conductors 19 of each phase part which are positioned on the rear side B of the transformer content 14 of the upper stage and arranged thereon horizontally are attached to a supporter 20 attached to both the end parts of an iron core 14a so as to be different height positions through respective three insulators 20a. Three lead wires 21 of the secondary side of a coil 14b of the transformer content 14 are connected to the conductors 19. Thereby the whole height is lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a transformer in which the contents of the transformer are stacked in multiple stages within a housing.

(Conventional technology) The electrical distribution equipment in the building is air conditioning equipment and lighting equipment.

Due to the automation of other equipment and the installation of various office equipment, the number of 82 is increasing, and high-voltage, large-capacity transformers are being used from the economic standpoint. On the other hand, it is desired to reduce the installation area of power distribution equipment in order to facilitate the transportation of power distribution equipment and to effectively utilize the floor space of a building. Therefore, instead of installing one large capacity transformer. The contents of a small-capacity transformer are mounted in a housing in multiple stages.

This conventional example is shown in FIG. That is, 1 is a casing, and a power distribution board 2 is provided adjacent to the casing. 3 and 4 are housing 1
The contents of a transformer are loaded in multiple stages, for example, two stages, of which the transformer contents 3 in the lower stage are composed of three coils 3b wound around each leg of an iron core 3a, and the transformer contents in the upper stage are The container contents 4 include, for example, two coils 4b wound around each leg of an iron core 4a, and the two coils 4b are connected in series. Note that a neutral point is drawn out from the secondary coil, and there are three lead wires. In these lower and upper transformer contents 3 and 4, three secondary lead wires 3c and 4c are drawn upward from the back side of the coils 3b and 4b, respectively.
Primary lead wires drawn out from the front portions of b and 4b are connected to a tap switching device (none of which is shown). 5a
and 5b are three retractable bars, which are arranged horizontally above the switchboard 2 so as to correspond to the transformer contents 3 and 4, respectively. When the transformer contents 3 and 4 are loaded in the housing 1, both ends of the three vertically arranged flexible bars 6a and 6b' are connected to the three retractable bars 58 and 5b, respectively. 3 each
It is connected to the secondary lead wires 3C and 4C.

(Problem to be Solved by the Invention) In the transformer described above, when changing the secondary voltage of the transformer contents 3 and 4 in the lower and upper stages, it is necessary to switch the tap switching device (not shown). In order to facilitate this, the tap switching device, that is, the primary side, is arranged on the front side, and the secondary side, that is, the secondary lead lines 3c and 4C, are arranged on the back side. Therefore, the work of connecting the flexible pars 68 and 6b between the lead-in bars 5a and 5b and the secondary lead wires 3C and 4C must be performed from the rear side of the transformer contents 3 and 4. Therefore, the following problem arises.

First, an opening must be provided on the back side of the housing 1 for the operator to enter and exit the housing 1, and a lid plate that closes this opening must be removably installed. The structure becomes complicated. Second, three flexible pars 6a are connected at different heights to the three secondary lead wires 3c extending above the transformer contents 3, and three secondary leads 6a extending above the transformer contents 4 are connected. Since it is necessary to connect the three flexible pars 6b to the lead wire 4C at different heights, the height of the housing 1 becomes large. Thirdly, since it is necessary to secure a space on the back side of the housing 1 through which nest builders can pass, the installation space for the transformer is larger than the bottom area of the housing 1, resulting in a large installation area. In this case, in order to save space on the back side of the housing 1, it is possible to arrange the secondary outlet glands 3C and 4C on the front side of the transformer contents 3 and 4. It is necessary to ensure an insulating distance from front to back, which ultimately increases the depth and makes it impossible to reduce the installation area.

The present invention has been made in view of the above circumstances, and its purpose is to simplify the structure of the housing, reduce the height and depth, and reduce the installation area. We are here to provide you with the transformers you need.

[Configuration of the Invention] (Means for Solving the Problems) The transformer of the present invention is. The contents of the transformer are loaded in multiple stages within the casing, and the connecting conductors for each phase are arranged horizontally at different heights above the transformer contents in each stage. The lead wires of the secondary coils inside each transformer are respectively connected to these connection conductors, and the ends of these connection conductors are characterized by a configuration in which the ends of the connection conductors protrude outward from the side surfaces of the corresponding transformer contents.

(Function) According to the transformer of the present invention, the connecting conductors for each phase, which are arranged horizontally at different heights above the transformer contents in each stage, are connected to the connecting conductors for each phase. Since the lead wires of the secondary coils are connected to each other, the overall height is reduced. In addition, since the ends of these connection conductors are made to protrude outward from the side surfaces of the corresponding transformer contents, connection work on the ends can be done from the front side of the casing, and from the back side of the casing. There is no need to reserve space for

(Example) Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 and 2.

Reference numeral 11 denotes a transformer panel as a casing, and a switchboard 12 is disposed adjacent to this. 13 and 14 are transformer contents loaded in multiple stages, for example, two stages, in the transformer panel 11; is installed on top. In this case, the lower transformer contents 13 are configured by winding three coils 13b for each phase around each leg of the iron core 13a, and the upper transformer contents 14 are configured by winding three coils 13b for each phase around each leg of the iron core 14a. The two coils 14b are connected in series, and a neutral point is drawn out on the secondary side.

Note that the three coils 13b of the lower transformer contents 13 and the two coils 14b of the upper transformer contents 14 are connected to the primary side lead wires located on the front side A. A tap changer is installed that does not. Reference numeral 16 denotes three connecting conductors for each phase located on the back side B of the lower transformer contents 13 and arranged horizontally above it, and these are connected to supports 17 attached to both ends of the iron core 13a. The insulators 17a are installed at different heights through three insulators 17a.

Each of these connecting conductors 16 has a coil 1 of the transformer body 13.
Three lead wires 18 on the secondary side of 3b are connected to each other. In this case, an insulator is interposed in the portion of the lead wire 18 that crosses the connection conductor 16 of the other phase. The end portion 16a of each connection conductor 16 projects slightly outward from the right side surface portion 13c of the corresponding transformer body 13.

Reference numeral 19 denotes three connecting conductors for each phase located on the back side B of the upper transformer contents 14 and arranged horizontally above it, and these are connected to supports 20 attached to both ends of the iron core 14a. The insulators 20a are installed at different heights through three insulators 20a. Each of these connecting conductors 1
9 are connected to three lead wires 21 on the secondary side of the coil 14b of the transformer interior 14, respectively. In this case as well, an insulator is interposed in the portion of the lead wire 21 that crosses the connection conductor 19 of the other phase. And each connection conductor 1
The end portion 19a of the transformer 9 projects further outward than the right side surface portion 14c of the corresponding transformer body 14. 22 is the connection conductor 1
6, the ends 22a of which protrude into the transformer board 11, and the respective ends 22a and the end 16 of the connecting conductor 16.
A horizontal flexible bar 23 is connected between a and a. 24 is a switchboard 12 corresponding to each connection conductor 19;
A horizontal flexible bar 25 is connected between each end 24a and the end 19a of each connecting conductor 19. has been done. In addition, in FIG. 2, 26 and 27 are supports attached to the upper part of the front side A of the transformer contents 13 and 14, and three insulators 26 are attached to each of these.
a and 27a (only one of each is shown) are provided, and the primary cable is connected to the tap changer of each coil 13a and 14a via these insulators 26a and 27a.

According to the above embodiment, each coil 13b of the transformer body 13
The secondary side lead wire 18 and the secondary side lead wire 21 of each coil 14b of the transformer contents 14 are connected to the connecting conductors 16 and 1
9 and guided in the horizontal direction, and further connected to the lead-in bars 22 and 24 via the horizontally arranged flexible pars 23 and 25, so that the secondary lead wires 3C and 24 of the transformer contents 3 are Unlike the conventional method in which flexible pars 6a and 6b are connected vertically to the ends of 4C,
The positions of the retractable bars 22 and 24 can be set low, and the height of the housing 11, that is, the overall height can be reduced. Further, the end portion 16a of each connection conductor 16 and the end portion 19a of each connection conductor 19 are connected to the corresponding side surface portion 13C of the transformer contents 13 and the side surface portion 14c of the transformer contents 14, respectively.
Since the flexible part 2 protrudes outward from the front side A of the transformer contents 13 and 14, an operator can enter the space between the transformer ff1ll and the switchboard 12.
3 and 25 can be connected, and the secondary side lead wire 3c of the transformer contents 3 and the secondary side lead wire 4c of the transformer contents 4 are located on the back side of the transformer contents 3 and 4, as in the conventional case. Unlike when connecting the flexible pars 6a and 6b from the back side, there is no need to provide a cover plate on the transformer panel 11, so the structure can be simplified. Since there is no need for a worker to enter B, there is no need to secure space on the back side B of the transformer panel 11, and the installation space can be reduced.

FIG. 3 shows a second embodiment of the present invention, which differs from the first embodiment in that the ends 16b of the three connecting conductors 16 are connected to the corresponding left side surface 13d of the transformer body 13. It is made to protrude outward.

FIG. 4 shows a third embodiment of the present invention, which differs from the first embodiment in that both ends 16a and 16b of the three connecting conductors 16 are connected to the right and left sides of the corresponding transformer contents 13. It is made to protrude outward from the side surfaces 13c and 13d.

These second and third embodiments also have the same effects as the first embodiment, and can be used especially when a switchboard similar to the switchboard 12 is installed on the left side. be.

[Effects of the Invention] As is clear from the above description, the transformer of the present invention has... Connecting conductors for each phase are arranged horizontally at different heights above the contents of each stage of transformers, which are stacked in multiple stages inside the case, and the contents of each transformer are connected to these connecting conductors. The lead wires of the secondary coils are connected to each other, and the ends of these connecting conductors are made to protrude outside the corresponding side walls of the transformer, simplifying the structure of the casing and reducing the height dimension. This has the effect of reducing the installation area.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a rear view, FIG. 2 is a side view, and FIG. 3 shows a second embodiment of the invention. 1, FIG. 4 is a diagram corresponding to FIG. 1 showing a third embodiment of the present invention, and FIG. 5 is a diagram corresponding to FIG. 1 of a conventional example. In the figure, 11 is the transformer panel (casing), 13 is the contents of the lower transformer, 13c and 13d are the side parts, 14 is the contents of the upper transformer, 14c is the side part, 16 is the connecting conductor, 16a, 16b
is the end, 18 is the sunrise wire on the secondary side, 19 is the connection conductor, 19
a indicates the end, and 21 indicates the sunrise line on the secondary side.

Claims (1)

[Claims] 1. The contents of the transformer are loaded in multiple stages within the casing, and the connecting conductors for each phase are arranged horizontally at different heights above the transformer contents in each stage. A transformer characterized in that the lead wires of the secondary coils inside each transformer are respectively connected to these connecting conductors, and the ends of these connecting conductors are made to protrude outward from the side surfaces of the corresponding transformer contents. vessel.