Multi-circuit expandable small modular pad switch

Abstract

The small modular ground switch (1) of the present invention is configured with multiple circuit type ground switches (1A, 1B, 1C) by increasing the number of switching circuit modules (10) of three-phase line connection terminals / I-type connectors (20) / busbars (30A, 30B, 30C) of A, B, and C phases, and includes a fixed rack (40) that installs the switching circuit modules (10) in any one of a building wall (200), an enclosure (300), and a manhole (400), thereby allowing for expansion by adding only modules of the same configuration even when the number of circuits increases, thus improving portability, usability, and economic efficiency.

Description

Technology Field

[0001] The present invention relates to a ground switch, and more particularly to a compact modular ground switch in which the ground switch circuit is configured as individual modules, allowing the number of circuits to be increased by adding modules. Background Technology

[0002] Generally, in areas where power distribution lines are undergrounded, ground switches are used for power supply, and the ground switches control the power supply to protect the power system that supplies power to the consumer side by stepping up the voltage from the substation to about 22,000 to 26,000 V.

[0003] For example, the above ground switchgear has a structure in which 3 to 4 switching circuits are integrated into a single equipment box, and the operating parts are separated for each circuit inside, and by being surrounded by a protective box equipped with them, it can be safely managed from high-voltage current. Prior art literature

[0004] Registered Utility Model Publication 20-0433382 (December 4, 2006) The problem to be solved

[0005] However, the aforementioned ground-mounted switch faces a problem in that it is difficult to secure space for installation in complex urban areas, and in particular, since the switch is a heavy object, mobile cranes must be used during construction; yet, the difficulty in securing space hinders vehicle access, making installation work impossible.

[0006] In addition, customer ground switches are installed in confined spaces such as between buildings, on rooftops, and in basements where space is limited, making maintenance and replacement difficult. Furthermore, there is a problem in that the ground switches cannot be restored, particularly in the event of an emergency power outage.

[0007] This problem could be resolved by installing above-ground switches in underground manholes; however, due to the large weight and volume of the switches, it is difficult to bring them into the manholes, and the need for larger manhole covers prevents this from being a viable solution.

[0008] Accordingly, the present invention, taking into account the above points, aims to provide a compact modular ground switchgear that can improve portability, usability, and economic efficiency by configuring the ground switchgear circuits into independent circuits and allowing expansion by simply adding modules even when the number of circuits increases to multiple circuits. means of solving the problem

[0009] The small modular ground switch of the present invention for achieving the above-mentioned purpose is characterized by comprising: a single-circuit ground switch formed by a switching circuit module, an I-type connector connected to the switching circuit module, and a busbar module connected to the I-type connector; and a fixing rack for installing the switching circuit module at any one of a building wall, an enclosure, and a manhole.

[0010] In addition, the small modular ground switch of the present invention for achieving the above-mentioned purpose is characterized by including a 1-circuit ground switch formed by a first I-type connector connected to a first switching circuit module (10) and a busbar module connected to a first busbar connection bushing, a 2-circuit ground switch formed by a second I-type connector connected to a second switching circuit module and a busbar module connected to a second busbar connection bushing, a 3-circuit ground switch formed by a third I-type connector connected to a third switching circuit module and a busbar module connected to a third busbar connection bushing, and a fixed rack that installs each of the 1st, 2nd, and 3rd switching circuit modules in any one of a building wall), an enclosure, and a manhole.

[0011] In a preferred embodiment, the connection between the first, second, and third switching circuit modules and the first, second, and third Type I connectors is formed by a line connector connecting bushing and a connecting connector, and a line cable is connected to each of the first, second, and third switching circuit modules.

[0012] In a preferred embodiment, the connection between the first, second, and third switching circuit modules and the first, second, and third Type I connectors is formed by a line connector connecting bushing and a connecting connector, and the line connector connecting bushing is of the load brake type.

[0013] In a preferred embodiment, the connection between the first, second, and third Type I connectors and the busbar module is formed by a busbar connection connector and a busbar connection bushing, and the busbar connection bushing is of the load brake type.

[0014] In a preferred embodiment, each of the first, second, and third switching circuit modules is equipped with a three-phase line connection terminal, and each of the first, second, and third Type I connectors is composed of three connected to each of the three-phase line connection terminals, and the busbar module is composed of three A, B, and C phase buses, and each of the three Type I connectors is connected. Effects of the invention

[0015] The small modular ground switch of the present invention is miniaturized to 15-20% of the size of a standard switch, thereby enabling manual labor work in locations where vehicles (e.g., cargo cranes) cannot enter for ground switch construction. This eliminates blind spots in maintenance and improves the installation environment for power distribution facilities. In particular, it enables power supply in locations where emergency power outages occur and through rapid restoration of repair work.

[0016] Accordingly, the aforementioned compact modular ground switch offers economic advantages; even if the number of circuits increases due to future expansion, only modules can be added, thereby reducing ground switch replacement costs. Furthermore, in the event of a breakdown or defect, only specific modular components can be replaced, allowing for reduced maintenance costs such as material and labor expenses, as well as improved reuse rates that provide the benefits of eco-friendly equipment. In terms of compatibility, the use of the same interface as existing ground equipment enables the interchangeable use of components such as elbows. Brief explanation of the drawing

[0017] FIG. 1 is a configuration diagram of a small modular ground switch according to the present invention, FIG. 2 is a state in which a small modular ground switch according to the present invention is installed on a building wall, FIG. 3 is a state in which a small modular ground switch according to the present invention is configured with three circuits, FIG. 4 is an example in which a small modular ground switch according to the present invention is configured with three circuits and installed in an enclosure, and FIG. 5 is an example in which a small modular ground switch according to the present invention is configured with three circuits and installed in a manhole. Specific details for implementing the invention

[0018] Embodiments of the present invention will be described in detail below with reference to the attached illustrative drawings. Since these embodiments are merely examples and can be implemented in various different forms by those skilled in the art to which the present invention pertains, the embodiments described herein are not limited to the examples described herein.

[0019] Referring to FIG. 1, the small modular ground switch (1) is formed as a 1-circuit type ground switch having three-phase line connection terminals, comprising a switching circuit module (10) forming an electrical circuit, an I-type connector (20) connecting the switching circuit and the busbar, and a busbar module (30) for electrical connection between circuits, and includes a fixed rack (40) for installing the 1-circuit type ground switch.

[0020] For example, as shown in the right circuit of FIG. 1, the above circuit configuration is such that the switching circuit module (10) forms an electrical circuit with the I-type connector (20) connected to the fixed rack (40) in an electrical connection structure, thereby energizing the line cable (100) connected to the I-type connector (20) and the switching circuit module (10).

[0021] Specifically, the above-mentioned switching circuit module (10) includes an epoxy insulating body (11), a line connector connecting bushing (13), a live line indicator (15), a switching switch (16), and a switching status indicator (17), which are components of a conventional switching circuit module.

[0022] For example, the epoxy insulating body (11) is configured with three separate three-phase line connection terminals, and the line connection bushing (13) is provided in each of the three three-phase line connection terminals in a load break type so that the line cable (100) is connected, the live line indicator (15) forms an electrical connection state with the I-type connector (20), and the open switch (16) and the open state indicator (17) operate and indicate the opening and closing.

[0023] Specifically, the above-mentioned I-type connector (20) is composed of three I-type connectors that are aligned with the three-phase line connection terminals, with the switching circuit connection connector (21), the flexible cable (22), and the busbar connection connector (23) being identical components, and these are components of a conventional I-type connector.

[0024] For example, the above-mentioned switching circuit connection member (21) is connected to the three-phase line connection terminal of the epoxy insulating body (11), and the above-mentioned elastic cable (22) extends to match the connection position with the busbar module (30) while connecting the switching circuit connection member (21) and the busbar connection member (23), and the above-mentioned busbar connection member (23) is coupled to and fixed to the busbar connection bushing (31) of the busbar module (30).

[0025] Specifically, the busbar module (30) is composed of busbars (30A, 30B, 30C) configured to match the three-phase line connection terminals, and the busbars are equipped with busbar connection bushings (31), and the load break type busbar connection bushings (31) are fitted with insulation caps (33).

[0026] For example, the above bus bar is composed of an A-phase bus bar (30A), a B-phase bus bar (30B), and a C-phase bus bar (30C), each equipped with a busbar connection bushing (31), and the busbar connection member (23) of the I-type connector (20) is fitted and fixed to the busbar connection bushing (31) with the insulation cap (33) removed.

[0027] In particular, the above A-phase bus bar (30A), the above B-phase bus bar (30B), and the above C-phase bus bar (30C) have the same length, but as the three I-type connectors (20) are arranged with spacing between them, the B-phase bus bar (30B) is positioned further inward relative to the position of the A-phase bus bar (30A), and the C-phase bus bar (30C) is positioned further inward than the B-phase bus bar (30B), thereby forming an upper / lower staggered arrangement structure.

[0028] Specifically, the fixed rack (40) is composed of two identical structures and is joined at a distance from each other on the back of the epoxy insulating body (11) of the switching circuit module (10).

[0029] For example, the above fixed rack (40) may have holes or bolt holes drilled so that the opening and closing circuit module (10) can be fixed by fastening with nails, bolts, or screws.

[0030] Referring to FIG. 2, the small modular ground switch (1) is exemplified as being installed on a building wall (200) as a single-circuit ground switch (1A).

[0031] As described above, the fixed rack (40) is fixed to the building wall (200) by means of nails, bolts, or screws, thereby allowing the size-reduced single-circuit ground switch (1A) of the small modular ground switch (1) to be easily positioned at the same location as the building wall (200).

[0032] In particular, the above fixed rack (40) can be used to fix the A, B, and C phase bus bars (30A, 30B, 30C) of the busbar module (30) when necessary.

[0033] Meanwhile, FIG. 3 shows an example in which the above-mentioned small modular ground switch (1) is expanded into three ground switches (1A, 1B, 1C).

[0034] As described above, the three-circuit ground switch (1A, 1B, 1C) can be simply implemented by configuring the switching circuit module (10) / Type I connector (20) / busbar module (30), which are components of the small modular ground switch (1), in the same configuration, and matching the switching circuit module (10) and Type I connector (20) to the first switching circuit module (10) and the first Type I connector (20), the second switching circuit module (10) and the second Type I connector (20), and the third switching circuit module (10) and the third Type I connector (20), respectively, to form three groups and arranging them in three rows.

[0035] However, when based on the components of a single-circuit ground switch (1A), the total quantity of the switch module (10) and the I-type connector (20) increases in accordance with the increase in circuits, whereas the busbar module (30) increases the length of the A, B, and C phase busbars (30A, 30B, 30C), so the quantity of busbars does not increase.

[0036] For example, when each of the above A, B, and C bus bars (30A, 30B, 30C) has four first, second, third, and fourth busbar connecting bushings (31) arranged spaced apart over the entire section, the first group of the first busbar connecting bushings (31) forms the first circuit ground switch (1A), the second group of the second busbar connecting bushings (31) forms the second circuit ground switch (1B), and the third group of the third busbar connecting bushings (31) forms the third circuit ground switch (1C) in an alternating arrangement state between the A busbar (30A), the B busbar (30B), and the C busbar (30C).

[0037] However, since the fourth group of the fourth busbar connection bushing (31) is not formed into a fourth circuit, each busbar connection bushing (31) is fitted with an insulating cap (33), and the fourth circuit can be formed in accordance with the future expansion of the small modular ground switch (1) into a four-circuit type ground switch.

[0038] Additionally, the above-mentioned fixed rack (40) independently fixes each of the first, second, and third circuit ground switches (1A, 1B, 1C) to the building wall (200) with equal lengths, but can be made with a length that allows the entire first, second, and third circuit ground switches (1A, 1B, 1C) to be fixed together if necessary.

[0039] Therefore, the ground switch (1A, 1B, 1C) in the above 3 circuits is connected to each of the line cables (100).

[0040] Meanwhile, Figures 4 and 5 show the usage state of the ground switch (1A, 1B, 1C) in the three circuits above.

[0041] Referring to FIG. 4, when the ground switch (1A, 1B, 1C) of the three circuits is installed in the enclosure (300), it is accommodated in the interior space of the enclosure by a fixed rack (40) fastened to the wall of the enclosure.

[0042] Therefore, the above three circuits of the ground switch (1A, 1B, 1C) enable a reduction in the size of the enclosure (300), and thereby allow it to be more easily installed in narrow spaces between buildings, rooftops, basements, etc., where it is difficult to secure space for the enclosure (300).

[0043] Referring to FIG. 5, when the above-mentioned three circuits of ground switches (1A, 1B, 1C) are installed in a manhole (400), the installation location inside the manhole can be set to various positions using a fixed rack (40) attached to the wall inside the manhole space.

[0044] Therefore, the above-mentioned three-circuit ground switch (1A, 1B, 1C) is not only easy to bring into the manhole due to its reduced weight and volume compared to the existing one, but also does not require changes such as enlargement of the manhole cover.

[0045] As described above, the small modular ground switch (1) according to the present embodiment is configured as a multiple-circuit type ground switch (1A, 1B, 1C) by increasing the number of switching circuit modules (10) of a three-phase line connection terminal / I-type connector (20) / busbar (30A, 30B, 30C) of A, B, and C phases, and includes a fixed rack (40) that installs the switching circuit modules (10) in any one of a building wall (200), an enclosure (300), and a manhole (400), thereby allowing for expansion by adding only modules of the same configuration even if the number of circuits increases, thereby improving portability, usability, and economic efficiency. Explanation of the symbols

[0046] 1 : Small modular ground switch 1A, 1B, 1C: 1st, 2nd, and 3rd circuit ground switches 10: Switching / closing circuit module 11: Epoxy insulating body 13: Track connection bushing 15 : Live line indicator 16 : Two-way open switch 17 : Open / Unopen Status Indicator 20 : Type I connector 21 : Switching / closing circuit connector 22 : Stretch cable 23 : Busbar connection connector 30: Busbar Module 30A, 30B, 30C: Bus bar on A, B, C 31: Busbar connection bushing 33 : Insulation cap 40 : Fixed rack 100 : Line cable 200 : Building wall 300 : Enclosure 400 : Manhole

Claims

Claim 1 A 1-circuit ground switch formed by a first Type I connector connected to a first switching circuit module and a busbar module connected to a first busbar connection bushing, a 2-circuit ground switch formed by a second Type I connector connected to a second switching circuit module and a busbar module connected to a second busbar connection bushing, a 3-circuit ground switch formed by a third Type I connector connected to a third switching circuit module and a busbar module connected to a third busbar connection bushing, and a fixed rack for installing each of the 1st, 2nd, and 3rd switching circuit modules in any one of a building wall, an enclosure, and a manhole, wherein the connection between the 1st, 2nd, and 3rd Type I connectors and the busbar modules is formed by a busbar connection connector and a busbar connection bushing, each of the 1st, 2nd, and 3rd switching circuit modules is equipped with a 3-phase line connection terminal, and each of the 1st, 2nd, and 3rd Type I connectors is connected to each of the 3-phase line connection terminals A multi-circuit expandable compact modular ground switchgear characterized by being composed of three parts, wherein the busbar module is composed of three A, B, and C phase busbars and each of the three I-type connectors is connected to each of the three A, B, and C phase busbars, each of the three A, B, and C phase busbars is equipped with a busbar connection bushing covered with an insulating cap, the three A, B, and C phase busbars have the same length and are arranged in an alternating vertical direction, the connection between the first, second, and third switching circuit modules and the first, second, and third I-type connectors is formed by a line connector connection bushing and a connection connector, a line cable is connected to each of the first, second, and third switching circuit modules, the line connector connection bushing is of the load break type, and the busbar connection bushing is of the load break type.

Images