Inlet wire contact cabinet, reactive compensation cabinet, feeder cabinet and low-voltage power distribution module

Abstract

The utility model relates to an inlet wire contact cabinet, a reactive power compensation cabinet and a feeder line cabinet. Each of the cabinets comprises a cabinet body which is substantially in a cuboid shape and a double-layer bus chamber structure which is arranged above the cabinet body. The utility model also relates to a low-voltage power distribution module, which comprises an incoming line contact cabinet, a reactive compensation cabinet, a feeder line cabinet and uninterruptible power supply equipment which are detachably connected together along the horizontal direction.

Description

Technical Field

[0001] The utility model relates to the field of power supply technology, in particular to a low-voltage power distribution module such as an incoming line connection cabinet, a reactive power compensation cabinet and a feeder cabinet, which can be used as components of a prefabricated low-voltage intelligent fusion power module for assembly and coordinated use. Background Art

[0002] With the rapid development of the digital economy, data centers, as crucial vehicles for next-generation information and communication technologies like 5G, artificial intelligence, and cloud computing, are experiencing increasing demand. Traditional data center construction solutions suffer from large footprints, long deployment cycles, low energy efficiency, high O&M costs, uncertain reliability, and poor component compatibility. Achieving rapid rollout, environmental friendliness, flexible deployment, prefabrication, and intelligent O&M have become key objectives in next-generation data center construction. Consequently, a new generation of prefabricated power modules has emerged. These modules primarily integrate substation modules, low-voltage distribution modules, uninterruptible power supply modules, and IT / power distribution modules, achieving a fully modular design, high integration, factory-prefabricated copper busbar connections, and intelligent management.

[0003] For example, Chinese invention patent application publication number CN102906358A describes a data center solution in which switchgear cabinets are arranged in rows, with busbars running along the bottom of each cabinet and carrying current through the equipment. The power distribution output is first routed to an uninterruptible power supply in the enclosure, where the power is converted to uninterruptible service. Circuit breakers above the cabinet distribute the power to its respective cabinet.

[0004] In traditional power distribution solutions, medium-voltage distribution equipment, transformers, low-voltage distribution equipment, and uninterruptible power supplies (UPSs) are considered independent components. These devices lack interconnectivity, with each module physically located in a different space. Their appearance varies, and the equipment frames cannot be connected in parallel. Power transmission is limited to cables between devices, resulting in a large footprint, complex on-site installation, long lead times, and difficult maintenance. Furthermore, these solutions typically do not support continuous maintenance of the UPS. In certain scenarios, such as banks' power distribution systems and those of critical data centers, power outages can have catastrophic consequences. This not only results in financial losses but can also significantly impact customer service and operations. Therefore, the limitations of traditional power distribution solutions have become a pain point in the construction of next-generation data centers. The low-voltage distribution system primarily includes incoming interconnector cabinets, feeder cabinets, and reactive power compensation cabinets. There is a growing demand in this technology field to achieve miniaturization of space, standardized design, unified cabinet structure, convenient cabinet connection, and compatibility with integrated UPS uninterruptible power supply modules to achieve fast and seamless switching between mains power and backup power.

[0005] Based on the above reasons, in order to reasonably and effectively solve the various difficulties faced by the existing technology, relevant technical personnel hope to improve or solve these problems by optimizing the product design of incoming line connection cabinets, feeder cabinets, reactive power compensation cabinets, etc. Utility Model Content

[0006] Therefore, the task of the present invention is to provide an incoming line connection cabinet, a reactive power compensation cabinet, a feeder cabinet and a low-voltage power distribution module, thereby overcoming at least one of the above-mentioned shortcomings of the prior art.

[0007] In order to accomplish the above-mentioned task, the present invention provides an incoming line connection cabinet, which includes a cabinet body that is generally rectangular, wherein the cabinet body is composed of a cabinet frame and a panel attached to the frame, wherein the cabinet frame includes: a plurality of frame columns; a plurality of beams arranged between these frame columns, wherein the plurality of beams include a top cabinet-width beam located at the top of the frame columns and arranged along the width direction of the cabinet, and a bottom cabinet-width beam located at the bottom of the frame columns and arranged along the width direction of the cabinet; a connector arranged between adjacent frame columns and the plurality of beams, the connector being an aluminum casting, wherein the connector includes: a base, wherein the base is generally constructed as a rectangular parallelepiped or a cube; a plurality of extensions, wherein the plurality of extensions are perpendicular to the base and extend from the base orthogonally to each other; wherein the extensions The extension is connected to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; wherein the cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged beam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone, which is separated from the busbar chamber by a partition located therebetween, wherein a first circuit breaker and a first busbar connected to the first circuit breaker and extending into the busbar chamber are provided in the first zone; a second zone, which is separated from the first zone by a mounting plate located therebetween, wherein a second circuit breaker and a second busbar connected to the second circuit breaker and extending into the busbar chamber are provided in the second zone; wherein the cabinet size of the incoming line connection cabinet is designed to be greater than or equal to 700 mm in width.

[0008] Therefore, unlike the existing technology, on the one hand, the improved incoming line connection cabinet has both incoming line function and connection function, but the floor space occupied by a single incoming line connection cabinet is reduced by 50% compared with the existing incoming line cabinet and connection cabinet placed side by side. Such an incoming line connection cabinet meets the miniaturization requirements while ensuring working performance; on the other hand, the double-layer busbar chamber structure adopted can realize the parallel connection of low-voltage switch cabinets of different functional cabinet types and the distribution of horizontal busbar directions.

[0009] As a preferred aspect, either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

[0010] As a preferred aspect, the device further comprises at least one front partition plate disposed in the first zone and the second zone for electrically isolating the first circuit breaker from the second circuit breaker.

[0011] As a preferred aspect, it further includes a busbar separator plate integrally formed of a metal plate or an insulating plate behind the first circuit breaker in the first zone, wherein the busbar separator plate is provided with a plurality of openings for air to flow through.

[0012] The present invention also provides a reactive power compensation cabinet, which includes a cabinet body that is generally rectangular, wherein the cabinet body is composed of a cabinet frame and a panel attached to the frame, wherein the cabinet frame includes: a plurality of frame columns; a plurality of beams arranged between the frame columns, wherein the plurality of beams include a top cabinet-width beam located at the top of the frame columns and arranged along the width direction of the cabinet, and a bottom cabinet-width beam located at the bottom of the frame columns and arranged along the width direction of the cabinet; a connector arranged between adjacent frame columns and the plurality of beams, the connector being an aluminum casting, wherein the connector includes: a base, wherein the base is generally constructed as a rectangular parallelepiped or a cube; a plurality of extensions, wherein the plurality of extensions are perpendicular to the base and extend orthogonally from the base to each other. The seat extends; wherein the extension is coupled to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; wherein the cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged beam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone, which is separated from the busbar chamber by a partition located therebetween, wherein a third circuit breaker capable of being electrically connected to the wiring busbar is provided in the first zone; a second zone, which is separated from the second zone by a mounting plate located therebetween, wherein a plurality of reactive compensation modules stacked one above the other are provided in the second zone; wherein the size of the cabinet of the reactive compensation cabinet is designed to be greater than or equal to 600 mm in width.

[0013] Different from the existing technology, the improved reactive power compensation cabinet not only ensures working performance but also meets the miniaturization requirements, effectively overcoming the defects of the existing technology.

[0014] As a preferred aspect, either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

[0015] As a preferred aspect, the system further comprises at least one front partition plate disposed in the first zone for electrically isolating the third circuit breaker.

[0016] As a preferred aspect, the reactive compensation module is designed as a drawer unit consisting of a track and a drawer arranged on the track, wherein the cabinet is also provided with a wiring channel, in which three busbars are arranged at intervals, wherein the front end of the drawer is provided with a secondary terminal plug-in connected to the busbar, and the secondary terminal plug-in includes a base, three moving contacts arranged at the front end of the base and three terminal blocks arranged at the rear end of the base and connected to the moving contacts respectively, and the front end of the moving contact is provided with a U-shaped socket plugged into the busbar.

[0017] The present invention also provides a feeder cabinet, which includes a cabinet body that is generally rectangular, wherein the cabinet body is composed of a cabinet frame and a panel attached to the frame, wherein the cabinet frame includes: a plurality of frame columns; a plurality of beams arranged between the frame columns, wherein the plurality of beams include a top cabinet-width beam located at the top of the frame columns and arranged along the width direction of the cabinet, and a bottom cabinet-width beam located at the bottom of the frame columns and arranged along the width direction of the cabinet; a connector arranged between adjacent frame columns and the plurality of beams, the connector being an aluminum casting, wherein the connector includes: a base, wherein the base is generally constructed as a rectangular parallelepiped or a cube; a plurality of extensions, wherein the plurality of extensions are perpendicular to the base and extend from the base orthogonally to each other; wherein the extensions The feeder cabinet is connected to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; wherein the cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged beam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone, which is separated from the busbar chamber by a partition located therebetween, wherein a fourth circuit breaker and a busbar connected to the fourth circuit breaker and extending into the busbar chamber are provided in the first zone; a second zone, which is separated from the second zone by a mounting plate located therebetween, wherein a fifth circuit breaker and a busbar connected to the fifth circuit breaker and extending into the busbar chamber are provided in the second zone; wherein the cabinet size of the feeder cabinet is designed to be greater than or equal to 500 mm in width.

[0018] Therefore, different from the existing technology, the improved feeder cabinet not only ensures working performance but also meets the miniaturization requirements, effectively overcoming the defects of the existing technology.

[0019] As a preferred aspect, either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

[0020] As a preferred aspect, the device further comprises at least one front partition plate disposed in the first zone and the second zone for electrically isolating the fourth circuit breaker from the fifth circuit breaker.

[0021] As a preferred aspect, it further includes a busbar separator plate integrally formed of a metal plate or an insulating plate behind the fourth circuit breaker in the first zone, wherein the busbar separator plate is provided with a plurality of openings for air to flow through.

[0022] The utility model also relates to a low-voltage power distribution module, which includes an incoming line connection cabinet, a reactive power compensation cabinet, a feeder cabinet and an uninterruptible power supply device that are detachably connected to each other along the horizontal direction, wherein the incoming line connection cabinet, the reactive power compensation cabinet and the feeder cabinet are each provided with an independent busbar chamber on their own top, wherein the incoming line connection cabinet, the reactive power compensation cabinet and the feeder cabinet are electrically connected to the uninterruptible power supply device by a copper busbar passing through the busbar chamber located at the top.

[0023] Some of the other features and advantages of the present invention will be obvious to those skilled in the art who have read the present invention, and the other parts will be described in the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 This is a three-dimensional diagram of the skeleton of the incoming line connection cabinet according to the utility model;

[0026] Figure 2 is a three-dimensional diagram of an incoming line connection cabinet according to the present invention, wherein some panels are removed to better illustrate the internal structure;

[0027] Figure 3 1 is a side view of the incoming line connection cabinet according to the present invention, wherein part of the panel is removed to better illustrate the internal structure;

[0028] Figure 4 This is a front view of the incoming line connection cabinet according to the utility model;

[0029] Figure 5 It is a side view of the incoming line connection cabinet according to the utility model;

[0030] Figure 6 1 is a front view of the incoming line connection cabinet according to the present invention, wherein the front panel is removed to better illustrate the internal structure;

[0031] Figure 7 is a perspective view of an incoming line connection cabinet according to the present invention, wherein the panel and internal structure are removed to better illustrate the frame;

[0032] Figure 8 yes Figure 7 Side view of one side of the frame Figure 2

[0033] Figure 9 yes Figure 7 The front view of the frame Figure 2

[0034] Figure 10 yes Figure 7 Side view of the other side of the frame Figure 2

[0035] Figure 11 is a three-dimensional diagram of a reactive power compensation cabinet according to the present invention, wherein some panels are removed to better illustrate the internal structure;

[0036] Figure 12 is another perspective view of the reactive power compensation cabinet according to the present invention, wherein some panels are removed to better illustrate the internal structure;

[0037] Figure 13 is a side view of the reactive power compensation cabinet according to the present invention, wherein the front panel is removed to better illustrate the internal structure;

[0038] Figure 14 This is a side view of the other side of the reactive compensation cabinet according to the utility model;

[0039] Figure 15 This is a front view of the reactive power compensation cabinet according to the utility model;

[0040] Figure 16 It is the first type of three-dimensional beam according to the present invention. Figure 2

[0041] Figure 17 is based on Figure 16 Side view of the beam in Figure 2

[0042] Figure 18 The second type of three-dimensional beam according to the present invention Figure 2

[0043] Figure 19-20 is based on Figure 18 Side view of the beam in Figure 2

[0044] Figure 21 It is the first type of three-dimensional connector according to the present invention. Figure 2

[0045] Figure 22-23 is based on Figure 21 Side view of the connector in Figure 2

[0046] Figure 24 It is the second type of three-dimensional connector according to the present invention. Figure 2

[0047] Figure 25 is based on Figure 24 Side view of the connector in Figure 2

[0048] Figure 26 is a perspective view of a feeder cabinet according to the present invention, wherein some panels are removed to better illustrate the internal structure;

[0049] Figure 27 is a side view of the feeder cabinet according to the present invention, wherein the front panel is removed to better illustrate the internal structure;

[0050] Figure 28 This is a front view of the feeder cabinet according to the utility model;

[0051] Figure 29 is a side view of the other side of the feeder cabinet according to the present invention;

[0052] Figure 30 is another perspective view of the feeder cabinet according to the present invention, wherein part of the panel is removed to better illustrate the internal structure;

[0053] Figure 31 The utility model is a three-dimensional low-voltage power distribution module having an incoming line connection cabinet, a reactive power compensation cabinet and a feeder cabinet. Figure 2

[0054] Figure 32 The utility model is a top view of a low-voltage power distribution module having an incoming line connection cabinet, a reactive power compensation cabinet and a feeder cabinet.

[0055] Description of Reference Numerals

[0056] 100-Incoming line contact cabinet; 101-Busbar room; 101A-Upper busbar room; 101B-Lower busbar room;

[0057] 102-first zone; 102A-front partition plate; 102B-mounting plate;

[0058] 102C-rear partition; 103-second zone; 103A-front partition; 103B-mounting plate;

[0059] 103C-lower partition plate; 104-first circuit breaker; 105-second circuit breaker; 106-busbar compartment partition plate;

[0060] 107 - top plate; 108 - first bus; 108A - first bus connector; 109 - second bus;

[0061] 109A - Second busbar connector; 110 - Busbar separator; 111 - Column; 112 - Top cabinet width or bottom cabinet width beam; 112A - Slot;

[0062] 112B-first folding edge; 112C-second folding edge; 113-side partition plate; 114-protective plate;

[0063] 200-reactive power compensation cabinet; 201-busbar room; 201A-upper busbar room; 201B-lower busbar room;

[0064] 202-first zone; 202A-front partition; 203-second zone; 204-third circuit breaker;

[0065] 205-SVG compensation module; 206-busbar compartment partition plate; 207-top plate;

[0066] 300-feeder cabinet; 301-busbar room; 301A-upper busbar room; 301B-lower busbar room;

[0067] 302-first zone; 302A-front partition plate; 302B-mounting plate;

[0068] 303-Second zone; 303A-Front partition; 303B-Mounting plate; 304-Fourth circuit breaker;

[0069] 305 - fifth circuit breaker; 306 - busbar compartment partition; 307 - top plate; 308 - third busbar;

[0070] 400 - first connecting member; 401 - base; 402A - first extension; 402B - second extension;

[0071] 402C-third extension; 500-second connecting member; 501-base;

[0072] 502A-first extension; 502B-second extension; X-depth direction; Y-width direction;

[0073] Z-height direction; DETAILED DESCRIPTION

[0074] With reference to the accompanying drawings, exemplary embodiments of the incoming line connection cabinet, reactive power compensation cabinet, and feeder cabinet according to the present invention are described in detail. The accompanying drawings are provided to illustrate various embodiments of the present invention, but they are not necessarily drawn to the dimensions of a specific embodiment, and certain features may be enlarged, removed, or partially cut away to better illustrate and explain the disclosure of the present invention. Some components in the accompanying drawings may be repositioned as needed without affecting the technical effect. The phrase "in the accompanying drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0075] Certain directional terms used in the following description of the drawings, such as "inner," "outer," "upper," "lower," and other directional terms, will be understood to have their normal meanings and refer to those directions associated with normal viewing of the drawings. Unless otherwise indicated, the directional terms described in this specification are generally in accordance with conventional directions understood by those skilled in the art.

[0076] The terms "first", "first", "second", "second" and similar terms used in this utility model do not indicate any order, quantity or importance, but are used to distinguish one component from other components.

[0077] Conventional low-voltage power distribution equipment often uses two cabinets, one serving as the incoming line cabinet and the other as the connecting cabinet. Each cabinet houses a frame-type circuit breaker for controlling the on / off switching of the circuit. This approach has the following drawbacks: 1. The two cabinets require excessive floor space; 2. The excessive number of distribution cabinets results in inefficient on-site operation and maintenance.

[0078] To this end, the incoming line liaison cabinet of the present invention houses the two corresponding frame circuit breakers for incoming and liaison functions within the same switch cabinet. By connecting the two frame circuit breakers via a busbar and completing the wiring for the secondary control circuit, the two functional cabinets are seamlessly integrated into a single, integrated incoming line liaison cabinet, effectively resolving the two aforementioned deficiencies. In particular, the incoming line liaison cabinet of the present invention can be designed with dimensions of 700mm wide, 1050mm deep, and 2300mm high, accommodating two high-current frame circuit breakers simultaneously. This addresses the unfortunate situation in which traditional distribution cabinets often fail to fully utilize the available cabinet space.

[0079] Figures 1 to 10 The figure shows an incoming line connection cabinet 100 provided according to the present invention. As shown, the incoming line connection cabinet 100 comprises a generally rectangular cabinet body. The cabinet body comprises a cabinet frame and panels. The cabinet body houses electronic devices such as circuit breakers, disconnectors, load switches, operating mechanisms, transformers, various protective devices, and cables and wires for electrically connecting the various electrical components within the cabinet body and external components.

[0080] See also Figure 4 In this embodiment, the incoming connection cabinet 100 is roughly divided into three areas from top to bottom, namely the busbar chamber 101, the first area 102 and the second area 103. The busbar chamber 101, the first area 102 and the second area 103 can be interconnected in space to allow electrical connections between electrical components. Figures 2 to 3 As shown, the busbar chamber 101 correspondingly accommodates a first busbar connector 108A and a second busbar connector 109A and a mutual inductor preferably arranged on the first busbar connector 108A and the second busbar connector 109A. The mutual inductor can be used to measure one or more parameters of the current and voltage flowing through the first busbar connector 108A and the second busbar connector 09A. Other computing elements connected to the mutual inductor control can obtain parameters such as power, harmonics, and frequency based on the measured current or voltage, so as to understand the operation status of the incoming line connection cabinet 100 in more detail from multiple aspects.

[0081] See again Figure 2 and 6 In the first zone 102 and the second zone 103, a first circuit breaker 104 that can be used as an incoming circuit breaker and a second circuit breaker 105 that can be used as a connecting circuit breaker are fixedly installed respectively (these circuit breakers can be 1250A frame-type circuit breakers). As an example, the main copper busbar connection terminals of the first circuit breaker 104 that serves as an incoming circuit breaker can be electrically connected to the connection terminals of the second circuit breaker 105 that serves as a connecting circuit breaker through the first busbar 108 (A, B, C phase, N phase). Figure 2-3 As shown in the figure, each phase of the first busbar 108 is electrically connected to the circuit breaker and then extends into an independent compartment of a vertical busbar with a certain thickness at the rear of the cabinet, which is separated from the circuit breaker. The four-phase busbars of phases A, B, C, and N are arranged in the same vertical direction from back to front, and then the busbar is extended upward to the busbar chamber 101 at the top of the cabinet to form a first busbar joint 108A, which is connected to the horizontal busbars of other feeder cabinets (section I busbar) to provide power for each feeder circuit; further, with the help of the rear partition plate 102C located in the first area 102, an independent compartment for the second busbar 109 that can be used as a grounding wire (PE phase) is formed between the first busbar and the rear wall of the incoming line connection cabinet 100. Here, the second busbar also extends upward to the busbar chamber 101 at the top of the cabinet to form a second busbar joint 109A.

[0082] As a feasible approach, the first circuit breaker 104 is connected to the vertical copper busbar of the incoming line ABC. The three-phase incoming line busbars (1TAa to 1TAc) of ABC are directly arranged from back to front, for example, with a phase spacing of 110 mm, and from left to right, for example, with a horizontal spacing of 90 mm. The incoming line busbar is then bent toward the front of the cabinet and extended upward to the busbar compartment at the top of the cabinet. Before bending, the busbar is broken to install the current transformer. After extending to the main busbar compartment, the NABC is extended a certain distance out of the cabinet through a horizontal copper busbar to facilitate connection of the power incoming line busbar on the low-voltage side of the transformer to this incoming line busbar.

[0083] The second circuit breaker 105 is connected to the vertical copper busbars (L21, L22, L23, N) of the interconnecting NABC. The four-phase interconnecting bars of this NABC are arranged vertically from left to right, with a horizontal spacing of, for example, 90 mm. The interconnecting bars are then positioned close to the rear of the cabinet and extended upward to the busbar compartment at the top of the cabinet. The busbars are then interrupted at the same height as the incoming copper busbars to install the current transformers (3TAa-3TAc). After extending to the main busbar compartment, they can be connected to the busbar section II via the dense busbar duct in the starting box.

[0084] After the primary electrical components within the cabinet are connected via copper busbars, the power supply circuit path for the first circuit breaker 104 of the incoming line breaker cabinet can primarily be routed through the main busbar, passing the incoming line copper busbar to the upper connector of the first circuit breaker 104, then through the circuit breaker to the lower connector of the first circuit breaker 104, and then through the vertical busbar to the horizontal busbar, connecting to the main busbars of other feeder cabinets to provide power for each feeder line. The power supply circuit path for the second circuit breaker 105 of the incoming line breaker cabinet is through the busbar duct, carrying the electricity from the II section busbar through the vertical busbar behind the cabinet to the lower terminal of the second circuit breaker 105, then through the circuit breaker to the upper terminal of the second circuit breaker 105, and then through the vertical busbar to the horizontal busbar, connecting to the main busbars (L11, L12, L13, N) of other feeder cabinets to provide power for each feeder line.

[0085] As a result, the improved incoming line contact cabinet (with dimensions changed to 700 mm wide and 2300 mm high) has both incoming line and contact functions, but the floor space occupied by a single incoming line contact cabinet is reduced by 50% compared with the existing incoming line cabinet and contact cabinet placed side by side. Such an incoming line contact cabinet not only ensures working performance but also meets the miniaturization requirements, effectively overcoming the defects of the existing technology.

[0086] See also Figure 1 The cabinet frame of the incoming line contact cabinet 100 is assembled by frame columns 111 arranged along the height direction Z direction, crossbeams arranged between the frame columns 111 and arranged along the width direction Y direction and the depth direction X direction respectively, and connectors made of aluminum, for example, for connecting them together. Here, the frame columns 111 in the frame are assembled by Figure 1The top of the cabinet is provided with a top cabinet width beam 112 arranged along the width direction Y of the cabinet body and the bottom of the cabinet is provided with a bottom cabinet width beam 112 arranged along the width direction Y of the cabinet body. They are used as part of the above beams to connect with the frame columns. These top cabinet width beams and / or bottom cabinet width beams 112 can be, for example, Figures 16 to 20 , wherein the top cabinet width beam and / or the bottom cabinet width beam 112 includes a slot 112A generally designed to be C-shaped and a first folded edge 112B or a second folded edge 112C connected thereto. Here, the first folded edge 112B for use with the first connector 400 described below has a wider width, for example, 100 mm, while the second folded edge 112C for use with the second connector 500 is narrower, for example, 50 mm.

[0087] Specifically, in Figures 21 to 25 As shown in detail in FIG, the first connecting member 400 includes a base 401 and a plurality of extensions 402A to 402C, preferably three in number. The base 401 is generally configured as a rectangular parallelepiped or a cube, and the plurality of extensions 402A to 402C are perpendicular to the base 401 and extend from the base 401 orthogonally to each other. Each extension 402A to 402C respectively engages with the slot 112A of the adjacent frame column 111 or the top cabinet width beam and / or the bottom cabinet width beam 112 to splice out the cabinet frame of the incoming line connection cabinet 100. Figures 21 to 23 As shown, the plurality of extensions 402A to 402C generally include a first extension 402A located in the longitudinal direction, a second extension 402B located in the width direction, and a third extension 402C extending perpendicular to the plane. The frame columns 111 are generally divided into horizontal supporting columns and vertical supporting columns. The horizontal columns and vertical columns are respectively connected to the plurality of extensions 402A to 402C of the first connector 400 to form the cabinet frame.

[0088] Further, in Figures 24 to 25 The second connector 500 is shown in FIG. It comprises a base 501 and preferably two extensions. The base 501 is generally configured as a rectangular parallelepiped or cube, for example. Two extensions 502A and 502B extend perpendicularly from the base 501 and orthogonally thereto. Each extension 502A and 502B engages adjacent frame columns or crossbeams to form the cabinet frame of the incoming line switch cabinet 100. The frame columns 111 are generally divided into horizontal supporting columns and vertical supporting columns. These columns and vertical columns are each engaged with the second connector 500 to form the cabinet frame.

[0089] As a non-limiting example, the first connecting member 400 and the second connecting member 500 are detachably coupled to the frame column 111, for example, by threaded connection, i.e., connecting holes are provided at corresponding positions of the horizontal portions, vertical portions, etc. of the multiple extensions 402A to 402C and the transverse columns and vertical columns of the frame column 111 for the passage of the screws, thereby achieving the positioning of the transverse columns and vertical columns of the frame column 111 relative to the first connecting member 400 and the second connecting member 500.

[0090] Thus, the incoming line connection cabinet 100 of the present invention is formed by joining the cabinet frame with the frame columns by aluminum casting connectors, so that the formed cabinet frame (and thus the incoming line connection cabinet) can prevent the formation of magnetic conductive loops in the cabinet body of the incoming line connection cabinet or promptly interrupt any magnetic conductive loops that may be formed by means of the connectors, thereby achieving welding-free assembly and effectively avoiding the generation of eddy currents, thereby achieving the beneficial effect of reducing and optimizing the heat dissipation performance of the incoming line connection cabinet. Furthermore, unlike the prior art using G-shaped or other shaped profiles, the cooperation of the crossbeam 112 and the first connector 400 and the second connector 500 according to the present invention makes the entire cabinet frame more solid and stable.

[0091] See again Figures 2 to 4 As shown, a partition 106, preferably made of stainless steel, is disposed between the busbar chamber 101 and the first zone 102 of the incoming interconnector cabinet 100. The stainless steel partition 106 may be a one-piece sheet metal member having a plurality of holes for controlling busbars and openings for allowing hot air to circulate between the busbar chamber 101 and the first zone 102. Above the partition 106, longitudinally arranged crossbeams 112 divide the busbar chamber 101 into a lower busbar chamber 101B located below and an upper busbar chamber 101A located above. The connectors 108A of the first busbar 108 and 109A of the second busbar 109 may be disposed in the lower busbar chamber 101B and the upper busbar chamber 101A, respectively, at different heights, to separate them. To facilitate the electrical connection of the busbar, different busbar clamps may preferably be provided in the lower busbar chamber 101B and the upper busbar chamber 101A to position the first busbar connector 108A and the second busbar connector 109A connected to the circuit breaker.

[0092] Unlike traditional distribution room systems, where busbar bridges are often used to combine different functional switchgear models, making prefabrication and installation impossible, the double-layer busbar compartment structure employed in this utility model allows for the combination of low-voltage switchgear models of different functional types, as described in detail below, and the distribution of horizontal busbars. This paves the way for prefabrication of low-voltage distribution modules in factories.

[0093] Further in Figure 2 and6 As clearly shown in Figures 9 to 9, a front partition plate 102A and a front partition plate 103A are respectively provided in the first zone 102 and the second zone 103 for electrically isolating the first circuit breaker 104 and the second circuit breaker 105 from other electrical components and the connection area in the incoming connection cabinet 100. Mounting plates 102B and 103B are respectively provided below the front partition plates 102A and 103A for mounting the first circuit breaker 104 and the second circuit breaker 105. Preferably, the front partition plates 102A and 103A have an outer shape that conforms to the inner circumferential walls of the first zone 102 and the second zone 103 and are designed as thin plates integrally formed from a metal plate or an insulating plate. The plates are provided with a plurality of openings for airflow. Compared with multi-piece partitions that need to be connected to each other by fasteners such as self-tapping screws or bolts, the front partition plates 102A and 103A of the present invention have fewer parts and a simplified assembly process, which reduces production time and improves efficiency.

[0094] like Figure 7 and 8 As shown, a busbar separator 110 is further provided behind the first circuit breaker 104 in the first zone 102. The busbar separator 110 may be a thin plate integrally formed of a metal plate or an insulating plate. The busbar separator 110 is provided with a plurality of openings for air to flow through. Figure 3 As shown, busbar separator plate 110 can separate the four-phase busbars (selectably A, B, C, and N phases), which extend upward to the lower busbar chamber 101B at the cabinet top and form a first busbar joint 108A, from the upper busbar chamber 101A, which also extends upward to the cabinet top and forms a second busbar joint 109A. Unlike the prior art, which generally ignores the protection of copper busbars against electric shock, the embodiments of the present invention fully consider the internal separation of the cabinet body and achieve safe isolation between the system bus channel and equipment units through a combination of metal partitions and insulating panels, thereby improving the protection of the personal safety of operation and maintenance personnel.

[0095] As another aspect of the present invention, Figures 11 to 15 The figure shows a reactive power compensation cabinet 200 (also referred to as an SVG cabinet) according to the present invention, which is primarily used to regulate reactive power in power systems. As shown, the reactive power compensation cabinet 200 comprises a roughly rectangular cabinet body. The cabinet body consists of a cabinet frame and panels. The cabinet houses electronic devices such as reactive power compensation devices (reactors, capacitors), SVG compensation modules 205, and cables and wires for electrically connecting the various electrical components within the cabinet and external components.

[0096] See also Figure 11-13In this embodiment, the reactive power compensation cabinet 200 is roughly divided into three areas from top to bottom, namely, a busbar chamber 201, a first area 202, and a second area 203. The busbar chamber 201, the first area 202, and the second area 203 can be spatially interconnected to allow electrical connections between electrical components.

[0097] like Figures 12 to 14 As shown, a partition 206, preferably made of stainless steel, is disposed between the busbar chamber 201 and the first zone 202 of the reactive power compensation cabinet 200. The partition 206 and the top plate 207 located above it together define the space of the busbar chamber 201. The stainless steel partition 206 can be a one-piece sheet metal member, provided with multiple holes for the controllable busbars and openings for allowing hot air to circulate between the busbar chamber 201 and the first zone 202. Above the partition 206, longitudinally arranged crossbeams 112 divide the busbar chamber 201 into a lower busbar chamber 201B located below and an upper busbar chamber 201A located above. The connectors for the connecting busbars extending into the busbar chamber 201 can be arranged in the lower busbar chamber 201B. Preferably, busbar positioning slots can be provided in the lower busbar chamber 101B to facilitate the installation and securing of the connecting busbars.

[0098] like Figures 12 to 14 As shown, a third circuit breaker 204 is provided in the first area 202 of the reactive power compensation cabinet 200, which can be electrically connected to the busbar. Here, the third circuit breaker 204 can be, for example, a knife-fuse switch or a molded case circuit breaker used as the main switch. As shown in the figure, the three-phase input end of the third circuit breaker 204 can be connected to the main busbar for power supply, and the three-phase output end can be connected to the three-phase busbar installed behind the cabinet. Figure 11 As shown in the figure, three molded case circuit breakers (MCCBs) serving as three-way branch switches are preferably located below the third circuit breaker 204. The three-phase incoming power of each of these MCCBs is connected to a busbar for power. The three-phase outgoing power of each branch switch is transferred to the back of the cabinet via the branchbar and supplied via insulated cables to the SVG modules described in detail below. Similar to the incoming line connection cabinet 100, the first section 202 is provided with a front partition plate 202A for electrically isolating the third circuit breaker 204 from other electrical components and the connection area within the reactive power compensation cabinet 200. Mounting locations for the third circuit breakers 204 are provided below the front partition plates 202A. These front partition plates 202A preferably have an outer shape that conforms to the inner circumferential wall of the first section 102 and are designed as thin plates integrally formed from metal or insulating sheet material. The plates are provided with multiple openings for airflow. Compared with a multi-piece partition plate that needs to be connected to each other by means of fasteners such as self-tapping screws or bolts, the front partition plate 102A of the present invention has fewer parts and a simplified assembly process, which reduces production time and improves efficiency.

[0099] like Figure 11 and 13 As shown, multiple SVG compensation modules 205 or other monitoring modules can be fixedly arranged in a stacked arrangement in the second zone 203 below the first zone 202. For example, these modules can be low-voltage active filtering devices that use high-speed DSP digital signal processing technology to drive IGBT electronic devices to inject a current with equal amplitude and opposite phase to the original harmonic current into the power grid, reducing the total harmonic current of the power supply to zero, thereby achieving real-time compensation for harmonic currents.

[0100] As an alternative embodiment, the multiple SVG compensation modules 205 stacked one above the other in the second zone 203 of the reactive compensation cabinet 200 can also be designed as drawer units, wherein these drawer units are composed of tracks and drawers mounted on the tracks. The reactive compensation cabinet 200 is provided with a wiring channel behind these drawer units, and three spaced-apart busbars are provided within the wiring channel to serve as three-phase circuits. The rear ends of these drawers can be provided with secondary terminal plug-ins that plug into the busbars. The secondary terminal plug-ins are fastened to the drawers by means of snap-fits or screws. As a feasible example, the secondary terminal plug-in includes a base, three moving contacts located at the front end of the base, and three terminal blocks located at the rear end of the base that are respectively connected to the moving contacts. The terminal blocks are used to connect to the reactive compensation device (reactor, capacitor, etc.) installed in the drawer. The front ends of the moving contacts are provided with "U"-shaped sockets that plug into the busbars. When the drawer is inserted, the "U"-shaped socket of the moving contact is inserted into the wiring busbar to complete the wiring; when the drawer is pulled out, the "U"-shaped socket of the moving contact is away from the wiring busbar to complete the circuit breaking.

[0101] Likewise, see Figure 11 The cabinet frame of the reactive power compensation cabinet 200 is assembled by frame columns 111 arranged along the height direction Z, crossbeams arranged between the frame columns 111 and arranged along the width direction Y and the depth direction X, and connectors for connecting them together, such as those made of aluminum. Figure 11 The top of the cabinet is provided with a top cabinet width beam 112 arranged along the width direction Y of the cabinet body and the bottom of the cabinet is provided with a bottom cabinet width beam 112 arranged along the width direction Y of the cabinet body. They are used as part of the above beams to connect with the frame columns. These top cabinet width beams and / or bottom cabinet width beams 112 can be, for example, Figures 16 to 20, wherein the top cabinet width beam and / or the bottom cabinet width beam 112 includes a slot 112A generally designed to be C-shaped and a first folded edge 112B or a second folded edge 112C connected thereto. Here, the first folded edge 112B for use with the first connector 400 described below has a wider width, for example, 100 mm, while the second folded edge 112C for use with the second connector 500 is narrower, for example, 50 mm.

[0102] Therefore, the improved reactive power compensation cabinet 200 (with dimensions changed to 600 mm in width and 2300 mm in height) not only ensures working performance but also meets the requirements of miniaturization, thereby effectively overcoming the defects of the prior art.

[0103] As another aspect of the present invention, Figures 26 to 30 The feeder cabinet 300 provided in accordance with the present invention is shown. It is primarily used to transmit electrical energy from incoming lines to various loads (or users). As shown, the feeder cabinet 300 comprises a roughly rectangular cabinet body. The cabinet body consists of a cabinet frame and panels. The cabinet houses electronic devices such as circuit breakers and busbars, as well as cables and wires used to electrically connect the various electrical components within the cabinet and to external components.

[0104] See also Figures 26 to 30 In this embodiment, the feeder cabinet 300 is roughly divided into three areas from top to bottom, namely, the busbar chamber 301, the first area 302, and the second area 303. The busbar chamber 201, the first area 302, and the second area 303 can be spatially interconnected to allow electrical connections between electrical components.

[0105] like Figures 26 to 30As shown, a partition 306, preferably made of stainless steel, is disposed between the busbar chamber 301 and the first zone 302 of the feeder cabinet 300. The partition 306 and the top plate 307 above it together define the space of the busbar chamber 301. The stainless steel partition 306 can be a one-piece sheet metal member, provided with multiple holes for the controllable busbars and openings for allowing hot air to circulate between the busbar chamber 301 and the first zone 302. Above the partition 306, longitudinally arranged crossbeams 112 divide the busbar chamber 301 into a lower busbar chamber 301B located below and an upper busbar chamber 301A located above. The connector for the busbars extending from the fourth circuit breaker 304 described below into the busbar chamber 301 is disposed in the lower busbar chamber 301B. Preferably, busbar positioning slots are provided in the lower busbar chamber 301B to facilitate the installation and securing of the busbars. At the same time, the connection busbar from the fifth circuit breaker 305 can be extended into the busbar chamber 301 and arranged in the upper busbar chamber 301A. Preferably, a busbar positioning groove can be provided in the upper busbar chamber 301A to play the role of installing and fixing the connection busbar.

[0106] Further in Figure 26 and 30 As clearly shown in the figure, the first and second zones 302 and 303 are each provided with a front partition plate 302A and a front partition plate 303A for electrically isolating the fourth and fifth circuit breakers 304 and 305 housed therein from other electrical components and the connection area within the feeder cabinet 300. Below the front partition plates 302A and 303A, mounting plates 302B and 303B are provided, respectively, for mounting the fourth and fifth circuit breakers 304 and 305. Preferably, the front partition plates 302A and 303A have an outer shape that conforms to the inner circumferential walls of the first and second zones 302 and 303, and are thin plates integrally formed from metal or insulating plates. The plates are provided with a plurality of openings for airflow. Compared with multi-piece partitions that need to be connected to each other by fasteners such as self-tapping screws or bolts, the front partition plates 302A and 303A of the present invention have fewer parts and a simplified assembly process, which reduces production time and improves efficiency.

[0107] like Figure 30 As shown, a busbar separator 110 is further provided behind the fourth circuit breaker 304 in the first zone 302. The busbar separator 110 may be a thin plate integrally formed of a metal plate or an SMC insulating plate. A plurality of openings for air to flow through are provided on the busbar separator 110. Figure 3As shown, the busbar separator 110 can separate the busbars (which can be selected as phases A, B, C, and N here) that extend upward to the lower busbar chamber 301B at the top of the cabinet and form a busbar joint from another busbar that extends upward to the upper busbar chamber 301A at the top of the cabinet and forms another busbar joint. Unlike the prior art, which generally ignores the protection of copper busbars against electric shock, the embodiments of the present invention fully consider the internal separation of the cabinet body and achieve safe isolation between the system busbar channel and equipment units through a combination of metal partitions and insulating panels, thereby improving the protection of the personal safety of operation and maintenance personnel.

[0108] Likewise, see Figure 26 and 30 The cabinet frame of the feeder cabinet 300 is assembled by frame columns 111 arranged along the height direction Z, crossbeams arranged between the frame columns 111 and arranged along the width direction Y and the depth direction X, and connectors for connecting them together, such as those made of aluminum. Figure 1 The top of the cabinet is provided with a top cabinet width beam 112 arranged along the width direction Y of the cabinet body and the bottom of the cabinet is provided with a bottom cabinet width beam 112 arranged along the width direction Y of the cabinet body. They are used as part of the above beams to connect with the frame columns. These top cabinet width beams and / or bottom cabinet width beams 112 can be, for example, Figures 16 to 20 , wherein the top cabinet width beam and / or the bottom cabinet width beam 112 includes a slot 112A generally designed to be C-shaped and a first folded edge 112B or a second folded edge 112C connected thereto. Here, the first folded edge 112B for use with the first connector 400 described below has a wider width, for example, 100 mm, while the second folded edge 112C for use with the second connector 500 is narrower, for example, 50 mm.

[0109] Therefore, the improved feeder cabinet 300 (with dimensions changed to 500 mm in width and 2300 mm in height) not only ensures working performance but also meets the requirements of miniaturization, thereby effectively overcoming the defects of the prior art.

[0110] As is known, in traditional power distribution solutions, low-voltage distribution equipment and uninterruptible power supplies are considered independent components. These devices lack interconnectivity and are physically located together. They have different appearances, and the equipment skeletons cannot be connected in parallel. Power transmission can only be carried out between devices via cables, resulting in large floor space, long on-site delivery time, and difficult maintenance.

[0111] To this end, Figures 31-32The figure shows a low-voltage power distribution module according to the present invention, which integrates the incoming line connection cabinet 100, the reactive power compensation cabinet 200 and the feeder cabinet 300 according to the present invention and the uninterruptible power supply equipment. All equipment and the connecting components between equipment can be prefabricated in the factory, which can not only greatly reduce the floor space, but also can be quickly delivered and deployed at the customer site.

[0112] like Figures 30 to 32 As shown, the incoming line connection cabinet 100, reactive power compensation cabinet 200, feeder cabinet 300, and uninterruptible power supply equipment in the low-voltage power distribution module can be arranged sequentially from left to right, and they can be detachably connected to each other along the horizontal direction. The number of uninterruptible power supply power module equipment can be only one or multiple. When there are multiple uninterruptible power supply power module equipment, the multiple uninterruptible power supply power module equipment are arranged sequentially and side by side.

[0113] The busbars between the incoming line connection cabinet 100, reactive power compensation cabinet 200, feeder cabinet 300 and uninterruptible power supply module in the low-voltage power distribution module are connected by copper busbars. As described above, the incoming line connection cabinet 100, reactive power compensation cabinet 200, feeder cabinet 300 and uninterruptible power supply module in the low-voltage power distribution module are equipped with independent busbar chambers. In particular, Figure 31 and 32 As shown in , these busbar chambers are arranged on the top of the corresponding equipment, and multiple busbar chambers are arranged in parallel and connected to each other. The busbars between adjacent equipment are connected together by copper bars or cables.

[0114] As a preferred aspect, for equipment equipped with multiple busbar sets, the busbar chamber 12 is equipped with longitudinally arranged crossbeams 112 to separate the chamber into independent compartments for accommodating each busbar set, making each busbar set independent of each other. Thus, unlike traditional distribution rooms where the combination of functional cabinets often relies on busbar bridges, which precludes factory prefabrication and installation, the double-layer busbar chamber structure employed in this utility model enables the combination of low-voltage switchgear of different functional cabinet types and the distribution of horizontal busbars, as described in detail below. This paves the way for the factory prefabrication of low-voltage distribution modules.

[0115] Therefore, according to the low-voltage power distribution module of the present invention, on the one hand, the width of the equipment can be designed to be 500, 600, or 700 mm according to the functional requirements of the cabinet type, the depth is unified to 1050 mm, the height is unified to 2400 mm (with base anchor bracket), and the effective utilization space of the equipment is unified to 1800 mm; on the other hand, the innovative double-layer busbar room architecture realizes the full-link copper busbar prefabrication connection at the power module equipment level and system level, greatly improves the product's safety factor and installation operation efficiency, significantly shortens the deployment cycle, and can achieve safe and efficient operation and maintenance of the product.

[0116] While the present invention has been described in detail using only a limited number of embodiments, it should be readily understood that the present invention is not limited to such disclosed embodiments. Rather, the present invention may be modified by incorporating any number of variations, alterations, substitutions, or equivalents not heretofore described, yet commensurate with the spirit and scope of the present invention. Furthermore, while various different embodiments of the present invention have been described, it should be understood that aspects of the present invention may include only some of the embodiments. Accordingly, the present invention is not to be considered limited by the foregoing description, but only by the appended claims.

Claims

1. An incoming line connection cabinet, characterized in that: The invention comprises a substantially rectangular cabinet body, wherein the cabinet body is composed of a cabinet body frame and a panel attached to the frame, The cabinet frame comprises: multiple frame columns; A plurality of cross beams arranged between the frame columns, wherein the plurality of cross beams include top cabinet-width cross beams located at the tops of the frame columns and arranged along the width direction of the cabinet body, and bottom cabinet-width cross beams located at the bottoms of the frame columns and arranged along the width direction of the cabinet body; A connecting member arranged between adjacent frame columns and a plurality of cross beams, wherein the connecting member is an aluminum casting, wherein the connecting member comprises: A base, the base being generally configured as a cuboid or a cube; a plurality of extensions, the plurality of extensions extending from the base perpendicularly to the base and orthogonally to each other; wherein the extension is coupled to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; The cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged crossbeam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone separated from the busbar chamber by a partition disposed therebetween, wherein a first circuit breaker and a first busbar connected to the first circuit breaker and extending into the busbar chamber are disposed in the first zone; a second zone separated from the first zone by a mounting plate located therebetween, The second zone is provided with a second circuit breaker and a second busbar connected to the second circuit breaker and extending into the busbar chamber; The size of the incoming line connection cabinet is designed to have a width greater than or equal to 700 mm.

2. The incoming line connection cabinet according to claim 1, characterized in that: Either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

3. The incoming line connection cabinet according to claim 1, characterized in that: The invention further includes at least one front partition plate disposed in the first zone and the second zone for electrically isolating the first circuit breaker from the second circuit breaker.

4. The incoming line connection cabinet according to claim 1, characterized in that: The invention also includes a busbar separator formed of a metal plate or an insulating plate in one piece behind the first circuit breaker in the first zone, wherein the busbar separator is provided with a plurality of openings for air to flow through.

5. A reactive power compensation cabinet, characterized in that: The invention comprises a substantially rectangular cabinet body, wherein the cabinet body is composed of a cabinet body frame and a panel attached to the frame, The cabinet frame comprises: multiple frame columns; A plurality of cross beams arranged between the frame columns, wherein the plurality of cross beams include top cabinet-width cross beams located at the tops of the frame columns and arranged along the width direction of the cabinet body, and bottom cabinet-width cross beams located at the bottoms of the frame columns and arranged along the width direction of the cabinet body; A connecting member arranged between adjacent frame columns and a plurality of cross beams, wherein the connecting member is an aluminum casting, wherein the connecting member comprises: A base, the base being generally configured as a cuboid or a cube; a plurality of extensions, the plurality of extensions extending from the base perpendicularly to the base and orthogonally to each other; wherein the extension is coupled to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; The cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged crossbeam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone separated from the busbar chamber by a partition located therebetween, wherein a third circuit breaker electrically connected to the busbar is provided in the first zone; a second zone separated from the first zone by a mounting plate located therebetween, The second zone is provided with a plurality of reactive compensation modules stacked one above the other; The size of the reactive compensation cabinet is designed to have a width greater than or equal to 600 mm.

6. The reactive power compensation cabinet according to claim 5, characterized in that: Either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

7. The reactive power compensation cabinet according to claim 5, characterized in that: The device further includes at least one front partition plate disposed in the first zone for electrically isolating the third circuit breaker.

8. The reactive power compensation cabinet according to claim 5, characterized in that: The reactive compensation module is designed as a drawer unit consisting of a track and a drawer arranged on the track, wherein the cabinet is also provided with a wiring channel, in which three busbars are arranged at intervals, wherein the front end of the drawer is provided with a secondary terminal plug-in plugged into the busbar, and the secondary terminal plug-in includes a base, three moving contacts arranged at the front end of the base and three terminal blocks arranged at the rear end of the base and connected to the moving contacts respectively, and the front end of the moving contact is provided with a U-shaped socket plugged into the busbar.

9. A feeder cabinet, characterized in that: The invention comprises a substantially rectangular cabinet body, wherein the cabinet body is composed of a cabinet body frame and a panel attached to the frame, The cabinet frame comprises: multiple frame columns; A plurality of cross beams arranged between the frame columns, wherein the plurality of cross beams include top cabinet-width cross beams located at the tops of the frame columns and arranged along the width direction of the cabinet body, and bottom cabinet-width cross beams located at the bottoms of the frame columns and arranged along the width direction of the cabinet body; A connecting member arranged between adjacent frame columns and a plurality of cross beams, wherein the connecting member is an aluminum casting, wherein the connecting member comprises: A base, the base being generally configured as a cuboid or a cube; a plurality of extensions, the plurality of extensions extending from the base perpendicularly to the base and orthogonally to each other; wherein the extension is coupled to a plurality of frame columns or beams, thereby assembling the plurality of frame columns or beams into a cabinet frame; The cabinet is divided from top to bottom into: a busbar chamber, wherein a longitudinally arranged crossbeam is centrally provided to divide the busbar chamber into a lower busbar chamber located below and an upper busbar chamber located above; a first zone separated from the busbar chamber by a partition disposed therebetween, wherein a fourth circuit breaker and a busbar connected to the fourth circuit breaker and extending into the busbar chamber are disposed in the first zone; a second zone separated from the first zone by a mounting plate located therebetween, The first zone is provided with a fifth circuit breaker and a busbar connected to the fifth circuit breaker and extending into the busbar chamber; The size of the feeder cabinet is designed to have a width greater than or equal to 500 mm.

10. The feeder cabinet according to claim 9, characterized in that: Either the top cabinet width beam or the bottom cabinet width beam includes a slot generally designed to be C-shaped and a first folded edge or a second folded edge connected thereto, wherein the width of the first folded edge is greater than or equal to 100 mm and the width of the second folded edge is greater than or equal to 50 mm.

11. The feeder cabinet according to claim 9, characterized in that: The device further includes at least one front partition plate disposed in the first zone and the second zone for electrically isolating the fourth circuit breaker from the fifth circuit breaker.

12. The feeder cabinet according to claim 9, characterized in that: The invention also includes a busbar separator formed of a metal plate or an insulating plate in one piece behind the fourth circuit breaker in the first zone, wherein the busbar separator is provided with a plurality of openings for air to flow through.

13. A low voltage power distribution module, characterized in that: It includes an incoming line connection cabinet, a reactive power compensation cabinet, a feeder cabinet and an uninterruptible power supply device that are detachably connected to each other in the horizontal direction, wherein the incoming line connection cabinet, the reactive power compensation cabinet and the feeder cabinet are each provided with an independent busbar chamber on their own top, wherein the incoming line connection cabinet, the reactive power compensation cabinet and the feeder cabinet and the uninterruptible power supply device are electrically connected by a copper busbar passing through the busbar chamber located at the top, wherein the incoming line connection cabinet is the incoming line connection cabinet according to any one of claims 1 to 4, and / or wherein the reactive power compensation cabinet is the reactive power compensation cabinet according to any one of claims 5 to 8, and / or the feeder cabinet is the feeder cabinet according to any one of claims 9 to 12.

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