JP6976793B2 - Light transformer panel and high-voltage power receiving equipment - Google Patents

Description

The present disclosure relates to a light transformer panel and high voltage power receiving equipment.

Conventionally, there is a power receiving facility described in Patent Document 1. The power receiving equipment described in Patent Document 1 includes a switch, a capacitor, a lamp transformer, and a power transformer. Power is supplied to capacitors, lamp transformers, and power transformers via switches. Capacitors, lamp transformers, and power transformers are connected in parallel with each other. Capacitors improve the power factor of the power supplied to the high voltage side of each of the lamp transformer and the power transformer.

Japanese Unexamined Patent Publication No. 2008-283820

By the way, in the high voltage power receiving equipment as described in Patent Document 1, it is possible to appropriately change the type and number of elements such as transformers according to the demands of consumers. For example, as in the high-voltage power receiving equipment 200 shown in FIG. 5, a structure including one disconnector 201, one high-voltage capacitor 202, two lamp transformers 203 and 204, and one power transformer 205 is adopted. It is also possible to do. According to such a high voltage power receiving facility 200, it is possible to supply electric power to two lamp loads and one power load.

On the other hand, when the high-voltage power receiving equipment 200 shown in FIG. 5 is installed indoors such as an electric room 210, a high-voltage power receiving board is used instead of the disconnector 201 when replacing the high-voltage power receiving equipment 200, especially in construction involving a collective power receiving contract. Need to be provided. Therefore, it is necessary to newly secure a space in the electric room 210 for arranging the high-voltage power receiving board. In such a case, for example, in the high-voltage power receiving equipment 200 as shown in FIG. 5, by using a light transformer having both functions instead of one light transformer 204 and one power transformer 205. After securing the space for one device, it is conceivable to take measures such as arranging a high-voltage power receiving board in that space.

However, when a light transformer is used instead of the electric light transformer 204 and the power transformer 205, in addition to the installation of the light transformer in the electric room 210, the wiring on the secondary side of the light transformer and the light It is necessary to install a low-voltage terminal block corresponding to the dynamic transformer on site. This is a factor that causes deterioration of workability, and causes various problems such as long construction time and incorrect wiring arrangement.

The present disclosure has been made in view of such circumstances, and an object thereof is to provide a light transformer panel and high voltage power receiving equipment capable of improving the workability of the light transformer.

The light transformer panel that solves the above problems converts the AC power supplied to the primary terminal into single-phase AC power that can be supplied to the single-phase load and three-phase AC power that can be supplied to the three-phase load. A light transformer that outputs from the secondary side terminal, a low-voltage terminal block that is connected to the secondary side terminal of the light transformer via wiring, and a single-phase that can be supplied to a single-phase load by the light transformer. a voltmeter for measuring a three-phase AC voltage that can be supplied to the AC voltage, and three-phase load, with which e Bei a, is formed in a rectangular parallelepiped frame shape, and an outer frame portion that accommodates the Akarido transformer therein, A transformer mounting part that is provided on the outer frame part and to which a light transformer is mounted, and a terminal mounting part that is a long plate-shaped member arranged so as to cross the front surface of the outer frame part and to which a low voltage terminal block is mounted. It is a flat plate-shaped member arranged so as to cover the upper part of the terminal mounting portion on the front surface of the outer frame portion . , and the low pressure terminal block, while being unitized by accommodating member, the four corners of the upper surface of the outer frame portion of the housing member, the connecting portion capable of linking a tool for lifting the board is formed.

In this light transformer board, since the light transformer and the low voltage terminal block are unitized in a wired state, it is only necessary to install this unitized light transformer board in the required place. Construction of the light transformer panel is completed. Therefore, the work required for the construction of the conventional light transformer, specifically, the work of connecting the light transformer and the low-voltage terminal block via wiring, the work of installing the low-voltage terminal block, etc. Is unnecessary. Therefore, the workability of the light transformer can be improved.
Further, it is possible to easily realize an accommodating member capable of unitizing a light transformer and a low-voltage terminal block only by providing a transformer mounting portion and a terminal mounting portion on the outer frame portion.
Further, since the light transformer board in which the light transformer and the low voltage terminal block are unitized can be easily lifted by the tool for lifting the board, the light transformer board can be easily transported.
In addition, since the work of installing the voltmeter is further eliminated, the workability can be further improved.

It is desirable that the above-mentioned light transformer panel further includes an anti-vibration member arranged between the transformer mounting portion and the light transformer.
According to this configuration, the vibration isolation of the light transformer can be improved.

The high-voltage power receiving equipment that solves the above-mentioned problems is provided with the above-mentioned light transformer panel.
By using the light transformer having excellent workability as described above for the high-voltage power receiving equipment, the workability of the entire high-voltage power receiving equipment can be further improved.

According to the present disclosure, it is possible to provide a light transformer panel and high voltage power receiving equipment capable of improving the workability of the light transformer.

FIG. 1 is a block diagram showing a schematic configuration of the high-voltage power receiving equipment of the embodiment. FIG. 2 is a perspective view showing a perspective structure of the light transformer panel of the embodiment. FIG. 3 is a front view showing the front structure of the light transformer panel of the embodiment. FIG. 4 is a side view showing the side structure of the light transformer panel of the embodiment. FIG. 5 is a block diagram showing a schematic configuration of the high-voltage power receiving equipment of the reference example.

Hereinafter, an embodiment of the high-voltage power receiving equipment and the light transformer panel will be described with reference to the drawings. In order to facilitate understanding of the description, the same components are designated by the same reference numerals as possible in the drawings, and duplicate description is omitted. First, the outline of the high-voltage power receiving equipment of the present embodiment will be described with reference to FIG.

As shown in FIG. 1, the high-voltage power receiving equipment 20 is installed in an electric room 10 provided in, for example, an office building or a condominium. The high-voltage power receiving equipment 20 converts the high-voltage power supplied from the electric power company or the like into a voltage or frequency that meets the specifications of the load equipment of the consumer. The high-voltage power receiving equipment 20 includes a high-voltage power receiving board 30, a high-voltage capacitor board 40, a lamp transformer board 50, and a light transformer board 60.

The high-voltage power receiving board 30 receives high-voltage AC power supplied from the power system via the high-voltage wiring 11, and also receives the received high-voltage AC power via the high-voltage bus 31r, 31s, 31t to the high-voltage condenser board 40 and the electric lamp. It is supplied to the transformer panel 50 and the light transformer panel 60. The high-voltage capacitor board 40, the lamp transformer board 50, and the light transformer board 60 are electrically connected in parallel to the high-voltage power receiving board 30. The high-voltage power receiving board 30 can switch between supplying and cutting off power to, for example, the high-voltage capacitor board 40, the lamp transformer board 50, and the light transformer board 60. The high-voltage power receiving board 30 normally supplies electric power to the high-voltage capacitor board 40, the lamp transformer board 50, and the light transformer board 60, but for example, when some abnormality occurs, the power to them is supplied. Cut off the supply of.

The high-voltage capacitor board 40 is electrically connected to the high-voltage bus 31r, 31s, 31t via a high-voltage cutout 41r, 41s, 41t made of a switch and high-voltage wiring 42r, 42s, 42t. The high-voltage capacitor board 40 improves the power factor by absorbing the delayed reactive power.

The lamp transformer panel 50 is electrically connected to the high-voltage bus 31r, 31s via a high-voltage cutout 51r, 51s composed of a switch and high-voltage wiring 52r, 52s. The electric light transformer panel 50 is a so-called single-phase transformer, and converts high-voltage single-phase AC power supplied from high-voltage wiring 52r and 52s into low-voltage single-phase AC power and outputs the power.

The light transformer board 60 is electrically connected to the high voltage bus 31r, 31s, 31t via the high voltage cutout 61r, 61s, 61t including the switch and the high voltage wiring 62r, 62s, 62t. The light transformer panel 60 is a low-voltage single-phase AC power capable of supplying high-voltage three-phase AC supplied from high-voltage wiring 62r, 62s, 62t to a single-phase load, and a low-voltage low-voltage three-phase AC power capable of supplying the three-phase load. Converts to three-phase AC power and outputs.

As described above, the high-voltage power receiving equipment 20 of the present embodiment can supply electric power to the two single-phase loads by the light transformer board 50 and the light transformer board 60, and the light transformer board 60. This makes it possible to supply power to one three-phase load.
Next, the structure of the light transformer panel 60 will be described in detail with reference to FIGS. 2 to 4.

As shown in FIG. 2, the light transformer board 60 includes a light transformer 70, four low-voltage terminal blocks 80 to 83, an accommodating member 90, and two voltmeters 100 and 101. ..
The upper surface 71 of the light transformer 70 is provided with three primary side terminals 720 to 722 and four secondary side terminals 730 to 733. High-voltage wiring 62r, 62s, 62t shown in FIG. 1 are connected to the three primary side terminals 720 to 722, respectively. That is, high-voltage three-phase alternating current is supplied to the primary side terminals 720 to 722 via the high-voltage wiring 62r, 62s, 62t. The light transformer 70 converts the high-voltage three-phase AC supplied to the primary side terminals 720 to 722 into low-voltage single-phase AC power and low-voltage three-phase AC power and outputs them from the secondary side terminals 730 to 733. .. As shown in FIGS. 3 and 4, the bottom of the light transformer 70 is provided with a pair of L-shaped foot portions 74, 75 arranged in parallel with each other.

As shown in FIG. 2, the accommodating member 90 accommodates the light transformer 70 inside, and the light transformer 70 and the low-voltage terminal blocks 80 to 83 are integrally assembled. The accommodating member 90 includes an outer frame portion 91, a transformer mounting portion 92, a terminal mounting portion 93, and a voltmeter mounting portion 94. The accommodating member 90 is made of metal.

The outer frame portion 91 is formed in the shape of a rectangular parallelepiped frame. The outer frame portion 91 is formed to be larger than the light transformer 70, and can accommodate the light transformer 70 inside the outer frame portion 91. At the four corners of the upper surface of the outer frame portion 91, connecting portions 95 to which tools for lifting a board such as a wire can be connected are formed.

The transformer mounting portion 92 is provided on the bottom surface of the outer frame portion 91. The transformer mounting portion 92 is composed of a pair of beam members 920 and 921 arranged in parallel with each other. One foot portion 74 of the light transformer 70 is attached to one beam member 920 via the vibration isolator 110, and the light transformer 70 is attached to the other beam member 921 via the vibration isolator 111. The other foot 75 of the 70 is attached. These anti-vibration members 110 and 111 make it possible to suppress the vibration transmitted from the accommodating member 90 to the light transformer 70.

The terminal mounting portion 93 is provided substantially in the center of the front surface of the outer frame portion 91. The terminal mounting portion 93 is composed of a long plate-shaped member arranged so as to cross the front surface of the outer frame portion 91. Four low-voltage terminal blocks 80 to 83 are attached to the terminal mounting portion 93 so as to be arranged at a predetermined interval in the longitudinal direction. The terminal mounting portion 93 is provided with a cover 930 to 933 so as to cover each low-voltage terminal block 80 to 83.

The voltmeter mounting portion 94 is provided above the terminal mounting portion 93. The voltmeter mounting portion 94 is composed of a flat plate-shaped member provided so as to cover the portion above the terminal mounting portion 93 on the front surface of the outer frame portion 91. Voltmeters 100 and 101 are attached to the voltmeter attachment portion 94. The voltmeters 100 and 101 measure the single-phase AC voltage that can be supplied to the single-phase load by the light transformer 70 and the three-phase AC voltage that can be supplied to the three-phase load, respectively, and can visually recognize the measured voltage. Display on.

As shown in FIGS. 2 to 4, the secondary side terminals 730 to 733 of the light transformer 70 are electrically connected to the low voltage terminal blocks 80 to 83 via the low voltage wiring 740 to 743, respectively. .. Therefore, the low-voltage single-phase AC power and the low-voltage three-phase AC power converted by the light transformer 70 are supplied to the four low-voltage terminal blocks 80 to 83 via the low-voltage wiring 740 to 743. Therefore, by electrically connecting the single-phase load to the two low-voltage terminal blocks of the four low-voltage terminal blocks 80 to 83 via wiring, it is possible to supply power to the single-phase load. Further, by electrically connecting the three-phase load to the three low-voltage terminal blocks via wiring, it is possible to supply electric power to the three-phase load.

Next, the construction method of the high-voltage power receiving equipment 20 of the present embodiment will be described.
For example, when the arrangement of the high-voltage power receiving equipment 200 as shown in FIG. 5 is changed to the arrangement of FIG. 1, first, the space corresponding to the two equipments is secured by removing the lamp transformer 203 and the power transformer 205. Then, after installing the high-voltage power receiving board 30 in the space of one device, the light transformer board 60 of the present embodiment is placed in the space of the other device. At that time, after connecting a tool for lifting a board such as a wire to the connecting portion 95 of the light transformer board 60, the light transformer board 60 is lifted by a crane device or the like via this tool to light the light. The transformer panel 60 can be easily arranged at a required position in the electric room 10. After that, the high-voltage power receiving equipment 20 can be constructed by connecting the high-voltage wiring 11 and the high-voltage bus 31r, 31s, 31t to the high-voltage power receiving board 30, and connecting the high-voltage wiring 42r, 42s, 42t to the light transformer board 60. Complete.

According to the light transformer panel 60 of the present embodiment described above, the actions and effects shown in the following (1) to (6) can be obtained.
(1) In the light transformer panel 60 of the present embodiment, since the light transformer 70 and the low voltage terminal blocks 80 to 83 are unitized in a wired state, this unitized light transformer. The construction of the light transformer board 60 is completed only by arranging the board 60 at a required place in the electric room 10. Therefore, the work required for the construction of the conventional light transformer, specifically, the work of connecting the light transformer and the low-voltage terminal block via wiring, and the work of installing the low-voltage terminal block are required. It becomes unnecessary. Therefore, the workability of the light transformer panel 60 can be improved.

(2) The light transformer 70 and the low-voltage terminal blocks 80 to 83 are unitized by the accommodating member 90. The accommodating member 90 includes an outer frame portion 91 that internally accommodates the light transformer 70, a transformer mounting portion 92 to which the light transformer 70 is mounted, and a terminal mounting portion 93 to which the low-voltage terminal blocks 80 to 83 are mounted. To prepare for. Thereby, the light transformer 70 and the low voltage terminal block 80 to 83 can be easily unitized.

(3) The light transformer panel 60 further includes anti-vibration members 110 and 111 arranged between the transformer mounting portion 92 and the light transformer 70. Thereby, the vibration isolation property of the light transformer 70 can be improved.
(4) The accommodating member 90 further includes a connecting portion 95 capable of connecting a tool for lifting a board such as a wire. As a result, the light transformer board in which the light transformer 70 and the low-voltage terminal blocks 80 to 83 are unitized can be easily lifted by a tool such as a wire, so that the light transformer board 60 can be easily transported. Become.

(5) The accommodating member 90 further includes a voltmeter mounting portion 94 to which the voltmeters 100 and 101 are mounted. This further eliminates the work of installing the voltmeters 100 and 101, so that the workability can be further improved.
(6) By using the light transformer panel 60 having excellent workability as in the present embodiment for the high voltage power receiving equipment 20, the workability of the high voltage power receiving equipment 20 as a whole can be improved.

The above embodiment can also be carried out in the following embodiments.
-The light transformer panel 60 may not be provided with the anti-vibration members 110 and 111. That is, the light transformer 70 may be directly attached to the transformer mounting portion 92.

The light transformer panel 60 is not limited to the voltmeters 100 and 101, but is, for example, a single-phase alternating current that can be supplied to a single-phase load by a light transformer 70, or a three-phase alternating current that can be supplied to a three-phase load. A current meter may be provided to measure.
-The structure of the high-voltage power receiving equipment 20 can be changed as appropriate. For example, the high-voltage power receiving equipment 20 may not be provided with the high-voltage capacitor board 40 or the lamp transformer board 50.

-The present disclosure is not limited to the above specific examples. Specific examples described above with appropriate design changes by those skilled in the art are also included in the scope of the present disclosure as long as they have the characteristics of the present disclosure. Each element included in each of the above-mentioned specific examples, and their arrangement, conditions, shape, and the like are not limited to those exemplified, and can be appropriately changed. The combinations of the elements included in each of the above-mentioned specific examples can be appropriately changed as long as there is no technical contradiction.

20: High-voltage power receiving equipment 60: Light transformer panel 70: Light transformer 80 to 83: Low-voltage terminal block 90: Accommodating member 91: Outer frame part 92: Transformer mounting part 93: Terminal mounting part 94: Voltmeter mounting Section 95: Connecting section 100, 101: Voltmeter 110, 111: Anti-vibration member 720-722: Primary side terminal 730 to 733: Secondary side terminal 740 to 743: Low voltage wiring

Claims (3)

A lighting transformer that converts the AC power supplied to the primary side terminal into single-phase AC power that can be supplied to a single-phase load and three-phase AC power that can be supplied to a three-phase load and outputs it from the secondary side terminal. When,
A low-voltage terminal block connected to the secondary terminal of the light transformer via wiring ,
The single-phase load can be supplied single phase AC voltage, and a voltmeter for measuring a three-phase AC voltage that can be supplied to the three-phase load, with which e Bei the by the Akarido transformer,
An outer frame portion that is formed in the shape of a rectangular parallelepiped frame and houses the light transformer inside, and
A transformer mounting portion provided in the outer frame portion and to which the lighting transformer is mounted, and a transformer mounting portion.
A long plate-shaped member arranged so as to cross the front surface of the outer frame portion, and a terminal mounting portion to which the low voltage terminal block is mounted and a terminal mounting portion.
It is a flat plate-shaped member arranged so as to cover the upper portion of the terminal mounting portion on the front surface of the outer frame portion, and includes an accommodating member having a voltmeter mounting portion to which the voltmeter is mounted.
While the light transformer and the low voltage terminal block are unitized by the accommodating member ,
A light transformer panel in which connecting portions to which tools for lifting a panel can be connected are formed at four corners of the upper surface of the outer frame portion of the accommodating member. Further provided with an anti-vibration member arranged between the transformer mounting portion and the light transformer.
The light transformer panel according to claim 1. High-voltage power receiving equipment provided with the light transformer panel according to claim 1 or 2.

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