Multi-circuit switchgear with improved isolation performance and power distribution system with same

Abstract

The utility model relates to a multi-loop switchgear with improved isolation performance and power distribution system with it, and the multi-loop switchgear includes: cabinet body, it is placed along vertical and has the installation space inside, multiple partitions are arranged in the inside of cabinet body to divide the installation space inside cabinet body into including multiple function compartments isolated from each other and multiple outgoing line compartments isolated from each other and isolated arrangement relative to multiple function compartments, and multiple outgoing line compartments and multiple function compartments one to one and adjacent arrangement, multiple circuit breakers are arranged in multiple function compartments respectively, and the outgoing line end of each circuit breaker is arranged in its side surface facing corresponding outgoing line compartment, multiple outgoing line terminals are arranged in multiple outgoing line compartments respectively, and each outgoing line terminal is configured to be able to extend into corresponding function compartment from the outgoing line compartment and connect with the outgoing line end of the circuit breaker in corresponding function compartment.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a multi-circuit switchgear with improved isolation performance and a power distribution system having the same. Background Technology

[0002] Switchgear, as a key piece of equipment in power distribution systems, is widely used in the regulation, distribution, control, protection, and measurement of electrical energy. Feeder cabinets, in particular, bear the core functions of switching, monitoring, and protecting various distribution circuits, and their performance and structure directly affect the reliability and safety of the entire power distribution system. Currently, feeder cabinets are typically arranged in a multi-circuit centralized layout, where multiple fixed or pluggable circuit breakers are centrally located inside the cabinet. However, this arrangement obviously has the following problems: Firstly, in application scenarios with a large number of distribution circuits and high rated currents, the existing layout structure is difficult to adapt to the operational requirements of withdrawable circuit breakers and seriously conflicts with users' operating habits. Secondly, in scenarios with multiple circuits and high currents centrally located, if a short circuit or other fault occurs in one circuit, the resulting high-temperature, high-voltage arc can easily spread to adjacent circuit units, leading to an expansion of the fault range and threatening the stable operation of the entire power distribution system.

[0003] Therefore, there is a demand in this field for multi-circuit switchgear with good isolation performance. Utility Model Content

[0004] The present invention aims to provide a multi-circuit switchgear with improved isolation performance that can at least solve some of the above-mentioned problems.

[0005] This utility model also aims to provide a power distribution system that applies the above-mentioned improved multi-circuit switchgear.

[0006] According to one aspect of the present invention, a multi-circuit switchgear with improved isolation performance is provided. The multi-circuit switchgear includes: a cabinet that is placed vertically and has an internal installation space; multiple partitions arranged inside the cabinet to divide the internal installation space into multiple isolated functional compartments and multiple isolated outgoing cable compartments arranged relative to the multiple functional compartments, wherein the multiple outgoing cable compartments correspond one-to-one with the multiple functional compartments and are arranged adjacent to each other; multiple circuit breakers respectively arranged in the multiple functional compartments, with the outgoing terminals of each circuit breaker facing the corresponding outgoing cable compartment; and multiple outgoing terminals respectively arranged in the multiple outgoing cable compartments, each outgoing terminal being configured to extend from its own outgoing cable compartment into the corresponding functional compartment and connect to the outgoing terminals of the circuit breakers in the corresponding functional compartment.

[0007] Compared with the prior art, the multi-circuit switchgear of this utility model rationally arranges the installation space inside the cabinet by arranging multiple partitions inside the cabinet. Multiple functional compartments that are isolated from each other and each has a built-in circuit breaker can realize multiple power distribution circuits. The outgoing terminals in multiple outgoing compartments that are isolated from each other and relative to the functional compartments can pass through the partitions adjacent to the functional compartments to connect with the circuit breakers in the functional compartments, so that the multiple outgoing terminals are isolated from each other, the multiple circuit breakers are isolated from each other, and the corresponding outgoing terminals and circuit breakers can also be isolated from each other, thereby further improving the isolation performance of the multi-circuit switchgear of this utility model.

[0008] Preferably, the plurality of said functional compartments are arranged in a vertical row, wherein each row of said functional compartments is designed to include one or two said functional compartments.

[0009] Preferably, the multiple partitions are further configured to divide the installation space inside the cabinet into a busbar compartment that is isolated from the multiple functional compartments and the multiple outgoing cable compartments, the busbar compartment being arranged above the multiple functional compartments and the multiple outgoing cable compartments.

[0010] Preferably, the multiple partitions are further configured to divide the installation space inside the cabinet into secondary rooms that are isolated from the multiple functional compartments, the multiple outgoing cable compartments, and the busbar compartment. The secondary rooms are configured to be arranged below the busbar compartment and adjacent to at least a portion of the multiple functional compartments.

[0011] Preferably, the multiple partitions are further configured to divide the installation space inside the cabinet into a cable compartment that is arranged below the busbar compartment and adjacent to at least a portion of the multiple outgoing cable compartments.

[0012] Preferably, the multiple partitions are further configured to divide the installation space inside the cabinet into a power distribution busbar compartment that extends vertically below the busbar compartment and is adjacent to the multiple functional compartments.

[0013] Preferably, the multi-circuit switchgear also includes a main busbar arranged on the rear and top panels adjacent to the cabinet, and a protective busbar and a neutral busbar arranged on the bottom and rear panels adjacent to the cabinet.

[0014] Preferably, each of the circuit breakers is configured as a withdrawable circuit breaker, and the incoming and outgoing terminals of each withdrawable circuit breaker are respectively arranged on the upper and lower sides of the corresponding withdrawable circuit breaker facing the corresponding outgoing compartment.

[0015] According to another aspect of the present invention, a power distribution system is also provided, the power distribution system including the multi-circuit switchgear with improved isolation performance as described above.

[0016] Other features and advantages of this invention will partly be apparent to those skilled in the art upon reading this application, and partly will be described below in conjunction with the accompanying drawings in the detailed description. Attached Figure Description

[0017] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a perspective view of a multi-circuit switchgear according to the first embodiment of the present invention after removing part of the side panels;

[0019] Figure 2 This is a first perspective view of a multi-circuit switchgear according to the first embodiment of the present invention after all side panels have been removed;

[0020] Figure 3 This is a second perspective view of the multi-circuit switchgear according to the first embodiment of the present invention after all side panels have been removed;

[0021] Figure 4 This is a front view of the multi-circuit switchgear according to the first embodiment of the present invention after all side panels have been removed;

[0022] Figure 5 This is a left view of the multi-circuit switchgear according to the first embodiment of the present invention after all side panels have been removed;

[0023] Figure 6 This is a rear view of the multi-circuit switchgear according to the first embodiment of the present invention after all side panels have been removed;

[0024] Figure 7 This is a perspective view of a multi-circuit switchgear according to the second embodiment of the present invention after removing part of the side panels;

[0025] Figure 8 This is a first perspective view of a multi-circuit switchgear according to the second embodiment of the present invention after all side panels have been removed;

[0026] Figure 9 This is a second perspective view of a multi-circuit switchgear according to the second embodiment of the present invention after all side panels have been removed.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100 - Multi-circuit switchgear; 10 - Cabinet body; 11 - Frame structure; 121 - Front panel; 121a - Front top cover; 121b - Secondary compartment door panel; 122 - Top panel; 20 - Functional compartment; 21 - Circuit breaker; 22 - Horizontal functional partition; 23 - First vertical functional partition; 24 - Second vertical functional partition; 30 - Outgoing line compartment; 31 - Outgoing line terminal; 32 - Horizontal outgoing line partition; 40 - Busbar compartment; 41 - Main busbar; 42 - Busbar partition; 50 - Secondary compartment; 51 - Secondary horizontal partition; 52 - Secondary vertical partition; 60 - Cable compartment; 61 - Cable vertical partition; 70 - Distribution busbar compartment; 71 - Distribution busbar; 81 - PE busbar; 82 - N busbar. Detailed Implementation

[0029] The schematic scheme of a multi-circuit switchgear with improved isolation performance disclosed in this utility model is now described in detail with reference to the accompanying drawings. Although the drawings are provided to illustrate some embodiments of this utility model, the drawings are not necessarily drawn to the dimensions of the specific embodiments, and certain features may be enlarged, removed, or partially cut to better illustrate and explain the disclosure of this utility model. Some components in the drawings may be repositioned according to actual needs without affecting the technical effect. The phrase "in the drawings" or similar terms appearing in the specification do not necessarily refer to all drawings or examples.

[0030] Certain directional terms used in the description of the accompanying drawings below, such as “inner,” “outer,” “above,” “below,” and other directional terms, will be understood to have their normal meaning and refer to those directions as normally viewed in the accompanying drawings. Unless otherwise specified, the directional terms used in this specification are generally in accordance with the conventional directions understood by those skilled in the art.

[0031] 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.

[0032] The terms "joining", "connection" and similar terms used in this utility model include both indirect connection of two components with the aid of an intermediate layer such as an adhesive or welding agent or an intermediate component such as a connector or transition piece, and direct connection of two components without the aid of any intermediate layer such as an adhesive or welding agent or an intermediate component such as a connector or transition piece.

[0033] Figures 1 to 9An example of a multi-circuit switchgear 100 for a power distribution system is shown. This example multi-circuit switchgear 100 optimizes space utilization and improves operational convenience by planning functional zoning, eliminates the risk of arc propagation across zones, and ensures current path stability and control system anti-interference capabilities. This improves isolation performance and provides a standardized and scalable solution for dense power distribution scenarios. The multi-circuit switchgear 100 may include a cabinet 10, multiple partitions, multiple circuit breakers 21, and multiple outgoing terminals 31.

[0034] Specifically, the cabinet 10 can be composed of a vertically arranged frame structure 11 and multiple panels arranged around the frame structure 11 to cooperate with it and form an internal installation space. For example, the frame structure 11 has a generally rectangular outline, and front panel 121, rear panel, left side panel, top panel 122, and bottom panel are arranged on the front, back, left, right, top, and bottom sides of the frame structure 11. For example, the frame structure 11 can use C-shaped column profiles of various sizes and be assembled using connectors such as aluminum T-joints, aluminum T-joints, and triangular plates to balance structural stability and rapid expansion. The C-shaped column profiles of various sizes can form the prisms of the rectangular outline, as well as multiple horizontal and vertical beams located inside the rectangular outline for support, positioning, or separation.

[0035] Multiple partitions can be arranged inside the cabinet 10, extending vertically or horizontally within the cuboid outline and connecting to corresponding prisms, beams, or longitudinal beams, thereby dividing the installation space inside the cabinet 10 into multiple spaces, such as at least multiple functional compartments 20 and multiple cable outlet compartments 30. The multiple functional compartments 20 are isolated from each other, while the multiple cable outlet compartments 30 are not only isolated from each other but also arranged in an isolated manner relative to the multiple functional compartments 20. Understandably, the "isolation arrangement" between compartments described herein refers to the physical space inside the cabinet 10, as is well known to those skilled in the art, formed by partitions made of metal or insulation to create independent and enclosed physical spaces, so that electrical components located in each compartment can be electrically isolated from each other.

[0036] Furthermore, multiple outgoing cable compartments 30 can be arranged in a one-to-one correspondence with multiple functional compartments 20, that is, the number of outgoing cable compartments 30 and functional compartments 20 are equal, for example in... Figures 1 to 6 The first embodiment shown and Figures 7 to 9 In the second embodiment shown, there are four outgoing cable compartments 30 and four functional compartments 20. However, it is understood that in embodiments not shown, the number of outgoing cable compartments 30 and functional compartments 20 can be selected according to actual needs. The outgoing cable compartments 30 can be arranged adjacent to the functional compartments 20, preferably behind the functional compartments 20. This not only facilitates the operation of electrical components within the functional compartments 20 by personnel at the front, but also helps to reduce the overall width of the multi-circuit switchgear 100.

[0037] A plurality of circuit breakers 21 are respectively arranged in a plurality of functional compartments 20, and a plurality of outgoing terminals 31 are respectively arranged in a plurality of outgoing compartments 30, so that the plurality of outgoing terminals 31 and the plurality of circuit breakers 21 are arranged in one-to-one correspondence. The outgoing end of the circuit breaker 21 may be arranged facing the corresponding outgoing compartment 30, preferably the rear side of the circuit breaker 21, such that the outgoing terminal 31 can extend forward through the partition between the outgoing compartment 30 where it is located and the corresponding functional compartment 20 into the corresponding functional compartment 20, and be connected to the outgoing end of the circuit breaker 21 inside the corresponding functional compartment 20. Therefore, the multi-circuit switch cabinet 100 provided by the present utility model can not only realize the mutual isolation of the circuit breakers 21 in the plurality of functional compartments 20 and the isolation between the plurality of circuit breakers 21 and the plurality of outgoing terminals 31, but also realize the mutual isolation between the plurality of outgoing terminals 31, thereby greatly improving the isolation performance of the multi-circuit switch cabinet 100 of the present utility model.

[0038] Alternatively, the plurality of functional compartments 20 may be arranged in rows in the vertical direction, and the number of the functional compartments 20 in each row may be designed as one functional compartment 20 or two functional compartments 20, for example in Figures 1 to 6 the first embodiment shown in the figure, the four functional compartments 20 are arranged in four rows with one functional compartment 20 in each row, and the four functional compartments 20 are arranged in a "|" pattern; in Figures 7 to 9 the second embodiment shown in the figure, the four functional compartments 20 are arranged in two rows with two functional compartments 20 in each row, and the four functional compartments 20 are arranged in a "tian" (square grid) pattern.

[0039] Correspondingly, the plurality of outgoing compartments 30 may be arranged in the same pattern as the corresponding plurality of functional compartments 20, for example in Figures 1 to 6 the first embodiment shown in the figure, the four outgoing compartments 30 are arranged in four rows with one outgoing compartment 30 in each row, and thus the width of the cabinet body 10 can be adaptively designed as a standard dimension of 600 mm; in Figures 7 to 9 the second embodiment shown in the figure, the four outgoing compartments 30 are arranged in two rows with two outgoing compartments 30 in each row, and thus the width of the cabinet body 10 can be adaptively designed as a standard dimension of 700 mm.

[0040] Therefore, in the multi-circuit switch cabinet 100 provided by the present utility model, the plurality of compartments, especially the plurality of functional compartments 20, can be arranged along the vertical direction according to actual demands, so as to realize the unification of modular layout, maximized space utilization and convenient operation and maintenance. Moreover, compared with the conventional low-voltage switchgear with a cabinet width of 800 mm or more, the overall size of the multi-circuit switch cabinet 100 can be effectively reduced, and a miniaturized design can be realized.

[0041] In addition, the circuit breaker 21 can preferably be designed as a withdrawable circuit breaker 21. The operating mechanism of the withdrawable circuit breaker 21 is usually designed on the left and right sides. The incoming end and the outgoing end can be arranged at the upper and lower ends of the rear side of the withdrawable circuit breaker 21, respectively. On the one hand, the withdrawable circuit breaker 21 can be used in high current application scenarios such as 630 amps or 800 amps rated current application scenarios. On the other hand, it can be better adapted to the upper and lower incoming and outgoing line paths when combined with multiple circuit breakers 21 arranged vertically.

[0042] Optionally, multiple partitions can further divide the installation space inside the cabinet 10 into a busbar compartment 40, a secondary compartment 50, a cable compartment 60, and a power distribution busbar compartment 70. That is, the installation space inside the cabinet 10 can be divided into multiple functional compartments 20, multiple outgoing cable compartments 30, a busbar compartment 40, a secondary compartment 50, a cable compartment 60, and a power distribution busbar compartment 70. The multiple functional compartments 20, multiple outgoing line compartments 30, busbar compartment 40, and secondary compartment 50 are mutually isolated. Specifically, the multiple functional compartments 20 are mutually isolated, the multiple outgoing line compartments 30 are mutually isolated, and any two compartments of the functional compartments 20, outgoing line compartments 30, busbar compartment 40, and secondary compartment 50 are arranged in an isolated manner. Furthermore, the cable compartment 60 and the distribution busbar compartment 70 are electrically isolated relative to the functional compartments 20, outgoing line compartments 30, busbar compartment 40, and secondary compartment 50. This not only follows the functional zoning principle and achieves physical isolation and sealing through the Form 4b standard well known to those skilled in the art, thereby effectively blocking the path of fault energy propagation and fundamentally eliminating the risk of arc propagation across zones; but also enables independent zoning of the main circuit and control circuit, thereby enhancing the anti-interference capability of signal flow and ensuring the stability of system operation through physical isolation.

[0043] Regarding the specific relative positions of the aforementioned compartments, please refer to the following: Figures 1 to 6 The multi-circuit switch cabinet 100 shown in the first embodiment will be described in detail.

[0044] As shown in the figure, the busbar partition plate 42 in the multi-partition extends laterally and is connected to the frame structure 11, so as to cooperate with the front upper cover plate 121a in the front panel 121 of the cabinet 10, the left side plate, the rear upper cover plate in the rear panel, and the top panel 122 to form a busbar chamber 40. The busbar chamber 40 may be provided with a main busbar 41 extending in the left and right direction. The multi-phase main busbar 41 is arranged side by side at intervals in the front and back direction and is adjacent to the rear panel of the cabinet 10. Two vertical functional partitions, namely the first vertical functional partition 23 and the second vertical functional partition 24, and four horizontal functional partitions 22 can be arranged on the lower side of the busbar partition 42. The four horizontal functional partitions 22 are generally arranged below the front area of ​​the busbar partition 42 and are spaced apart from each other. The first vertical functional partition 23 and the second vertical functional partition 24 can extend downward from the lower side of the busbar partition 42 and are respectively arranged on the left and rear sides of the four horizontal functional partitions 22, thereby cooperating with the busbar partition 42 and the front panel 121 and right side panel of the cabinet 10 to divide four functional compartments 20. Three horizontal outgoing cable partitions 32 are located below the rear area of ​​the busbar partition 42 and behind the functional compartment 20. These three horizontal outgoing cable partitions 32 are spaced apart from each other and connected to the second vertical functional partition 24 located behind the functional compartment 20. The first vertical functional partition 23 located on the left side of the functional compartment 20 can extend rearward to connect with the frame structure 11, so that the three horizontal outgoing cable partitions 32, together with the busbar partition 42, the first vertical functional partition 23, the second vertical functional partition 24, and the rear panel, right side panel, and bottom plate of the cabinet 10, divide the space into four outgoing cable compartments 30. The second vertical functional partition 24 located behind the functional compartment 20 may have through holes corresponding to the areas of each functional compartment 20 and each outgoing cable compartment 30, allowing the outgoing terminals 31 in each outgoing cable compartment 30 to extend through the corresponding through holes into the corresponding functional compartment 20 and connect to the outgoing terminals of the corresponding circuit breaker 21.

[0045] The secondary horizontal partition 51 and secondary vertical partition 52 of the multiple partitions can be generally arranged below the busbar partition 42. The secondary horizontal partition 51 can be generally arranged in the area slightly to the left and slightly forward below the busbar partition 42 and connected to the first vertical functional partition 23 on the right. The secondary vertical partition 52 can extend downward from the rear side of the secondary horizontal partition 51. Thus, the secondary horizontal partition 51, the secondary vertical partition 52, the secondary compartment door panel 121b and bottom plate in the left side panel and front panel 121 of the cabinet 10, and the first vertical functional partition 23 can cooperate to form a secondary compartment 50 located below the busbar compartment 40 and to the left of the functional compartment 20. The first vertical functional partition 23 can be provided with through holes corresponding to each functional compartment 20 to allow secondary electrical devices in the secondary compartment 50 to extend into the corresponding functional compartment 20 through the corresponding through holes and connect to the electrical control signal source.

[0046] The vertical cable partition 61 in the multiple partitions can be arranged in parallel with the secondary vertical partition 52, and its right side is connected to the area of ​​the first vertical functional partition 23 extending backward beyond the secondary chamber 50. Thus, the vertical cable partition 61, the secondary vertical partition 52, the first vertical functional partition 23, and the left side panel and bottom panel of the cabinet 10 can be combined to form the power distribution busbar chamber 70, and the vertical cable partition 61, the first vertical functional partition 23, the left side panel, the rear panel and the bottom panel of the cabinet 10 can be combined to form the cable chamber 60. Both the distribution busbar compartment 70 and the cable compartment 60 are located below the busbar compartment 40. The distribution busbar compartment 70 is also located to the left of the functional compartment 20 and to the rear of the secondary compartment 50. The cable compartment 60 is located to the rear of the distribution busbar compartment 70 and to the left of the outgoing compartment 30. The distribution busbar compartment 70 is equipped with a vertically extending distribution busbar 71. The upper end of the distribution busbar 71 can be connected to the main busbar 41. The area of ​​the distribution busbar 71 that is generally opposite to the functional compartment 20 can pass through the first vertical functional partition 23 via the terminal block and enter the corresponding functional compartment 20 to connect with the incoming terminal of the corresponding circuit breaker 21. The cable compartment 60 can be equipped with wiring cables, which can pass through the adjacent first vertical functional partition and connect with the corresponding outgoing terminal 31 to transmit power.

[0047] The multi-circuit switchgear 100 may also include a protection busbar and a neutral busbar, namely PE busbar 81 and N busbar 82, which are arranged vertically at intervals relative to the main busbar 41. PE busbar 81 and N busbar 82 may be arranged adjacent to the rear panel and bottom plate of the cabinet 10 and extend laterally below the cable compartment 60 and the lowest outgoing cable compartment 30. In this way, the electrical connection path can be optimized.

[0048] Similar to Figures 1 to 6 The multi-circuit switchgear 100 shown in the first embodiment is... Figures 7 to 9 The connection relationships between the components of the multi-circuit switch cabinet 100 in the second embodiment shown are generally the same, but the relative positional relationships of the various types of compartments are different. Therefore, the relative positional relationships between the compartments in the cabinet 10 of the multi-circuit switch cabinet 100 are described in detail below.

[0049] As shown in the figure, the position of the busbar chamber 40 in the cabinet body 10 is the same as the position of the busbar chamber 40 in the first embodiment, the four functional compartments 20 are arranged in a vertical "tian" shaped pattern, the secondary chamber 50 is arranged between the busbar chamber 40 and the functional compartments 20, the four outgoing compartments 30 are arranged below the busbar chamber 40 and located at the rear side of the functional compartments 20, the four outgoing compartments 30 are generally distributed in a vertical "tian" shape, but a distribution busbar chamber 70 extending in the vertical direction may be provided between the two relatively upper outgoing compartments 30, and the cable chamber 60 may be arranged below the functional compartments 20 and the outgoing compartments 30. The positional relationship between the main busbar 41 and the PE bar 81 and the N bar 82 is generally the same as the positional relationship between the main busbar 41 and the PE bar 81 and the N bar 82 in the first embodiment, and thus will not be repeated here.

[0050] Optionally, the power distribution system provided by the present utility model may include a plurality of multi-loop switchgear cabinets 100, and the plurality of multi-loop switchgear cabinets 100 may arbitrarily combine the multi-loop switchgear cabinet 100 in the first embodiment and the multi-loop switchgear cabinet 100 in the second embodiment, that is, the plurality of multi-loop switchgear cabinets 100 may all select the multi-loop switchgear cabinet 100 in the first embodiment or the multi-loop switchgear cabinet 100 in the second embodiment, or include both the multi-loop switchgear cabinet 100 in the first embodiment and the multi-loop switchgear cabinet 100 in the second embodiment.

[0051] It should be understood that although the present specification is described in terms of various embodiments, not each embodiment contains only one independent technical solution. Such narration manner of the specification is merely for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0052] The above description is only the illustrative specific embodiments of the present utility model, and is not intended to limit the scope of the present utility model. Any equivalent changes, modifications and combinations made by any person skilled in the art without departing from the concept and principle of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A multi-circuit switchgear (100) with improved isolation performance, characterized in that, The multi-circuit switchgear (100) includes: The cabinet (10) is placed vertically and has internal installation space; Multiple partitions are arranged inside the cabinet (10) to divide the installation space inside the cabinet (10) into multiple functional compartments (20) that are isolated from each other and multiple cable outlet compartments (30) that are isolated from each other and arranged in a way that is isolated from each of the multiple functional compartments (20). The multiple cable outlet compartments (30) correspond one-to-one with the multiple functional compartments (20) and are arranged adjacent to each other. Multiple circuit breakers (21) are arranged in multiple functional compartments (20), with the outgoing terminals of each circuit breaker (21) facing the corresponding outgoing compartment (30). Multiple outgoing terminals (31) are arranged in multiple outgoing compartments (30), and each outgoing terminal (31) is configured to extend from its respective outgoing compartment (30) into the corresponding functional compartment (20) and connect to the outgoing terminal of the circuit breaker (21) in the corresponding functional compartment (20).

2. The multi-circuit switchgear (100) with improved isolation performance according to claim 1, characterized in that, Multiple functional compartments (20) are arranged in a vertical row, wherein each row of functional compartments (20) is designed to include one or two functional compartments (20).

3. The multi-circuit switchgear (100) with improved isolation performance according to claim 1 or 2, characterized in that, The multiple partitions are also configured to divide the installation space inside the cabinet (10) into a busbar compartment (40) which is also arranged in isolation from the multiple functional compartments (20) and the multiple outgoing cable compartments (30), the busbar compartment (40) being arranged above the multiple functional compartments (20) and the multiple outgoing cable compartments (30).

4. The multi-circuit switchgear (100) with improved isolation performance according to claim 3, characterized in that, The multiple partitions are also configured to divide the installation space inside the cabinet (10) into a secondary room (50) that is isolated from the multiple functional compartments (20), the multiple outgoing cable compartments (30) and the busbar compartment (40). The secondary room (50) is configured to be arranged below the busbar compartment (40) and adjacent to at least a portion of the multiple functional compartments (20).

5. The multi-circuit switchgear (100) with improved isolation performance according to claim 3, characterized in that, The multiple partitions are also configured to divide the installation space inside the cabinet (10) into a cable compartment (60) that is arranged below the busbar compartment (40) and adjacent to at least a portion of the multiple outgoing cable compartments (30).

6. The multi-circuit switchgear (100) with improved isolation performance according to claim 3, characterized in that, The multiple partitions are also configured to divide the installation space inside the cabinet (10) into a power distribution bus room (70) that extends vertically below the bus room (40) and is adjacent to the multiple functional compartments (20).

7. The multi-circuit switchgear (100) with improved isolation performance according to claim 5, characterized in that, The multi-circuit switchgear (100) also includes a main busbar (41) arranged on the rear and top panels adjacent to the cabinet (10) and a protective busbar and a neutral busbar arranged on the bottom and rear panels adjacent to the cabinet (10).

8. The multi-circuit switchgear (100) with improved isolation performance according to claim 1, characterized in that, Each of the circuit breakers (21) is constructed as a withdrawable circuit breaker (21), and the incoming terminal and outgoing terminal (31) on each of the withdrawable circuit breakers (21) are respectively arranged on the upper and lower sides of the corresponding withdrawable circuit breaker (21) facing the corresponding outgoing compartment (30).

9. A power distribution system, characterized in that, The power distribution system includes a multi-circuit switchgear (100) with improved isolation performance according to any one of claims 1 to 8.

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