Low-voltage switch cabinet
By placing the incoming busbars and outgoing busbars on opposite sides of the cabinet in a low-voltage switchgear, the problem of high splicing costs in existing technologies is solved, and convenient splicing and efficient circuit control are achieved.
Patent Information
- Application Number
- CN202422924909.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-11-29
AI Technical Summary
The existing splicing method for low-voltage switchgear results in high costs for splicing adjacent cabinets and makes it difficult to splice them conveniently.
The incoming and outgoing busbars of the low-voltage switchgear are designed to be located on opposite sides of the cabinet, utilizing vertical space to facilitate splicing with adjacent cabinets. Circuit control and protection are achieved through the circuit breaker body.
It enables convenient cabinet assembly, reduces assembly costs, and improves circuit control and protection efficiency through the design of the circuit breaker body.
Smart Images
Figure CN223744148U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a switchgear cabinet technical field especially, it relates to a low voltage switchgear cabinet. BACKGROUND
[0002] Low voltage switchgear cabinet is widely used in industry and commerce, high -rise building, power plant, petrochemical, community etc. containing occasion, is responsible for 35kV or 10kV high voltage cabinet from line side through the voltage of transformer becomes low voltage 400V low voltage switchgear cabinet, again through low voltage switchgear cabinet is effectively distributed to each electric equipment, satisfies different equipment to the requirement of voltage, for example 380V, 220V etc., guarantees the normal operation of power system. The current common turn over the row cabinet scheme on the market goes in line under the line scheme, or goes in line under the line scheme, like this, it is inconvenient for adjacent left cabinet or right cabinet to carry out the cabinet splicing, and it is easy to cause the splicing manufacturing cost to increase. UTILITARY MODEL CONTENT
[0003] The utility model discloses a low voltage switchgear cabinet to solve the problem of the prior art, facilitate the cabinet splicing with adjacent left cabinet or right cabinet, and reduce the splicing manufacturing cost.
[0004] To achieve the above object, the utility model provides the following scheme:
[0005] The utility model provides a low voltage switchgear cabinet, including the cabinet body, the incoming line busbar, outgoing line busbar and circuit breaker body, the first cavity and the second cavity of vertical side -by -side are provided in the cabinet body, and the incoming line busbar sets up at the side wall of first cavity, and one end can extend into the first cavity, outgoing line busbar sets up at the first cavity with the opposite side wall of the incoming line busbar side wall, and one end can extend the first cavity, and the circuit breaker body sets up in the second cavity, and the incoming line busbar with the outgoing line busbar can all with circuit breaker body electricity is connected.
[0006] Preferably, the incoming line busbar includes A-phase incoming line, B-phase incoming line, C-phase incoming line and working ground incoming line, the outgoing line busbar includes A-phase outgoing line, B-phase outgoing line and C-phase outgoing line, the A-phase incoming line, the B-phase incoming line and the C-phase incoming line are connected to the incoming line end of the circuit breaker body, the A-phase outgoing line, the B-phase outgoing line and the C-phase outgoing line are connected to the outgoing line end of the circuit breaker body, the A-phase incoming line, the B-phase incoming line and the C-phase incoming line are in electrical communication with the A-phase outgoing line, the B-phase outgoing line and the C-phase outgoing line respectively through the circuit breaker body, and the working ground incoming line is used for grounding.
[0007] Preferably, the A-phase incoming line, the B-phase incoming line, the C-phase incoming line, the A-phase outgoing line, the B-phase outgoing line and the C-phase outgoing line are all electrically connected to the circuit breaker body through the lapped copper bars; and the working ground incoming line is extended to the lower side of the cabinet body through the ground copper bar for grounding.
[0008] Preferably, the lapped copper bars connected to the A-phase incoming line, the B-phase incoming line, the C-phase incoming line, the A-phase outgoing line, the B-phase outgoing line and the C-phase outgoing line and the ground copper bar connected to the working ground incoming line are all provided with support insulators connected to the inner wall of the cabinet.
[0009] Preferably, the circuit monitoring components are arranged on the circuits connecting the A-phase incoming line, the B-phase incoming line and the C-phase incoming line to the circuit breaker body.
[0010] Preferably, the circuit monitoring components are current transformers.
[0011] Preferably, the cabinet further comprises a ground protection copper bar arranged at the bottom of the cabinet.
[0012] Preferably, an insulating partition plate is arranged between the first cavity and the second cavity.
[0013] Preferably, the circuit breaker body is detachably arranged in the second cavity.
[0014] Preferably, the cabinet is a vertical cabinet.
[0015] The low-voltage switch cabinet provided by the present application has the following technical effects compared with the prior art:
[0016] The low-voltage switch cabinet provided by the present application has the following technical effects compared with the prior art: BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0018] Figure 1 The front view schematic diagram of the low-voltage switch cabinet provided in Embodiment One is shown in the figure.
[0019] Figure 2 The schematic diagram of the incoming line side of the low-voltage switch cabinet provided for Embodiment One;
[0020] Figure 3 The schematic diagram of the outgoing line side of the low-voltage switch cabinet provided for Embodiment One;
[0021] Figure 4 The schematic diagram of the opening of the incoming line side of the low-voltage switch cabinet provided for Embodiment One;
[0022] Figure 5 The schematic diagram of the opening of the outgoing line side of the low-voltage switch cabinet provided for Embodiment One;
[0023] Figure 6 The front view schematic diagram of the incoming line busbar and the outgoing line busbar and the circuit breaker body provided for Embodiment One;
[0024] Figure 7 The left side view schematic diagram of the low-voltage switch cabinet provided for Embodiment One; Figure 6 The rear view schematic diagram of the low-voltage switch cabinet provided for Embodiment One.
[0025] Figure 8 The rear view schematic diagram of the low-voltage switch cabinet provided for Embodiment One. Figure 6
[0026] In the figure: 1-cabinet body; 11-first cavity; 12-second cavity; 2-incoming line busbar; 21-phase A incoming line; 211-phase A first longitudinal incoming line copper bar; 212-phase A second longitudinal incoming line copper bar; 22-phase B incoming line; 221-phase B first longitudinal incoming line copper bar; 222-phase B second longitudinal incoming line copper bar; 23-phase C incoming line; 231-phase C first longitudinal incoming line copper bar; 232-phase C second longitudinal incoming line copper bar; 24-working grounding incoming line; 241-longitudinal grounding copper bar; 242-transverse grounding copper bar; 3-outgoing line busbar; 31-phase A outgoing line; 311-phase A first longitudinal outgoing line copper bar; 312-phase A transverse outgoing line copper bar; 313-phase A second longitudinal outgoing line copper bar; 32-phase B outgoing line; 321-phase B first longitudinal outgoing line copper bar; 322-phase B transverse outgoing line copper bar; 323-phase B second longitudinal outgoing line copper bar; 33-phase C outgoing line; 331-phase C first longitudinal outgoing line copper bar; 332-phase C transverse outgoing line copper bar; 333-phase C second longitudinal outgoing line copper bar; 4-circuit breaker body; 41-incoming line end; 42-outgoing line end; 5-supporting insulator; 6-monitoring component; 7-grounding protection copper bar; 8-insulating partition plate. DETAILED DESCRIPTION
[0027] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.
[0028] The present application provides a low-voltage switch cabinet to solve the problems in the prior art, facilitate cabinet splicing with adjacent left or right cabinets, and reduce splicing manufacturing costs.
[0029] To make the above-mentioned purposes, features and advantages of the present application more apparent, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments.
[0030] Embodiment One
[0031] The present embodiment provides a low-voltage switch cabinet, please refer to Figures 1-8 The cabinet body 1 is internally provided with vertically arranged first and second cavities 11 and 12; the incoming line busbar 2 is arranged on one side wall of the first cavity 11 and can extend into the first cavity 11 at one end; the outgoing line busbar 3 is arranged on the other side wall of the first cavity 11 opposite to the side wall where the incoming line busbar 2 is arranged and can extend out of the first cavity 11 at one end; the circuit breaker body 4 is arranged in the second cavity 12, and the incoming line busbar 2 and the outgoing line busbar 3 can be electrically connected with the circuit breaker body 4.
[0032] The incoming line busbar 2 and the outgoing line busbar 3 are arranged on opposite sides of the cabinet body 1, i.e. on the left and right sides of the cabinet body 1, as shown in Figure 2 and Figure 3 The incoming line busbar 2 is connected with the outgoing line busbar 3 on the adjacent cabinet body 1, facilitating cabinet splicing between the cabinet body 1 and the adjacent cabinet body 1, which is more convenient than the up-and-down incoming and outgoing line mode, does not require additional cabinet splicing settings, and saves costs; and the first and second cavities 11 and 12 are arranged to utilize the vertical space, facilitate internal wiring of the cabinet body 1, and perform circuit control and protection through the circuit breaker body 4.
[0033] In the optional scheme of the present embodiment, more preferably, please refer to Figure 4 and Figure 5The incoming line busbar 2 includes an A-phase incoming line 21, a B-phase incoming line 22, a C-phase incoming line 23 and a working ground incoming line 24; the outgoing line busbar 3 includes an A-phase outgoing line 31, a B-phase outgoing line 32 and a C-phase outgoing line 33; the A-phase incoming line 21, the B-phase incoming line 22 and the C-phase incoming line 23 are connected to the incoming line end of the circuit breaker body 4, the A-phase outgoing line 31, the B-phase outgoing line 32 and the C-phase outgoing line 33 are connected to the outgoing line end of the circuit breaker body 4, the A-phase incoming line 21, the B-phase incoming line 22 and the C-phase incoming line 23 are in electrical communication with the A-phase outgoing line 31, the B-phase outgoing line 32 and the C-phase outgoing line 33 respectively through the circuit breaker body 4; the working ground incoming line 24 is used for grounding; wherein the A-phase incoming line 21 and the A-phase outgoing line 31 form a loop through the circuit breaker body 4; the B-phase incoming line 22 and the B-phase outgoing line 32 form a loop through the circuit breaker body 4; the C-phase incoming line 23 and the C-phase outgoing line 33 form a loop through the circuit breaker body 4; the working ground can provide a power loop for a single-phase 220V electrical equipment, can form a 220V voltage with the A-phase loop, the B-phase loop and the C-phase loop respectively, and when a three-phase load is unbalanced, the zero line conducts an unbalanced current back to the neutral point, so as to maintain the line voltage and the phase voltage of the power supply system basically balanced.
[0034] In an optional solution of the embodiment, preferably, referring to Figure 6 , Figure 7 and Figure 8 , the A-phase incoming line 21, the B-phase incoming line 22, the C-phase incoming line 23, the A-phase outgoing line 31, the B-phase outgoing line 32 and the C-phase outgoing line 33 are electrically connected with the circuit breaker body 4 through the lapped copper bars; the working ground incoming line 24 extends to the lower side of the cabinet body 1 through a grounding copper bar for grounding.
[0035] Specifically, the A-phase current loop is: the A-phase incoming line 21--the A-phase first longitudinal incoming line copper bar 211--the A-phase second longitudinal incoming line copper bar 212--the incoming line end 41--the circuit breaker body 4--the outgoing line end 42--the A-phase second longitudinal outgoing line copper bar 313--the A-phase transverse outgoing line copper bar 312--the A-phase first longitudinal outgoing line copper bar 311--the A-phase outgoing line 31;
[0036] The B-phase current loop is: the B-phase incoming line 22--the B-phase first longitudinal incoming line copper bar 221--the B-phase second longitudinal incoming line copper bar 222--the incoming line end 41--the circuit breaker body 4--the outgoing line end 42--the B-phase second longitudinal outgoing line copper bar 323--the B-phase transverse outgoing line copper bar 322--the B-phase first longitudinal outgoing line copper bar 321--the B-phase outgoing line 32;
[0037] The C-phase current loop is: the C-phase incoming line 23--the C-phase first longitudinal incoming line copper bar 231--the C-phase second longitudinal incoming line copper bar 232--the incoming line end 41--the circuit breaker body 4--the outgoing line end 42--the C-phase second longitudinal outgoing line copper bar 333--the C-phase transverse outgoing line copper bar 332--the C-phase first longitudinal outgoing line copper bar 331--the C-phase outgoing line 33;
[0038] Working ground loop: working ground incoming line 24 - longitudinal ground copper bar 241 - transverse ground copper bar 242; wherein the transverse ground copper bar 242 facilitates grounding or cabinet splicing with the transverse ground copper bar 242 of the adjacent cabinet 1; by arranging the transverse copper bar or the longitudinal copper bar, it is convenient to lap according to the space in the cabinet 1.
[0039] In an optional solution of the embodiment, preferably, the lap copper bars connected by the A-phase incoming line 21, the B-phase incoming line 22, the C-phase incoming line 23, the A-phase outgoing line 31, the B-phase outgoing line 32 and the C-phase outgoing line 33 and the ground copper bar connected by the working ground incoming line 24 are all provided with support insulators 5 connected with the inner wall of the cabinet 1, which play a supporting role for the lap copper bars and ensure the insulation distance.
[0040] In an optional solution of the embodiment, preferably, the circuit connected by the A-phase incoming line 21, the B-phase incoming line 22 and the C-phase incoming line 23 and the circuit breaker body 4 is provided with a monitoring component 6, which is used for monitoring circuit information; further, the monitoring component 6 is arranged as a current transformer, which realizes real-time online monitoring of electric energy metering and current measurement and is used for relay protection. The current transformer is of a bus type plastic shell type insulation, has a mounting plate at the lower part for fixing installation, has a window hole in the middle for the incoming line to pass through, and the mounting plate is connected to the inner wall of the cabinet 1.
[0041] In an optional solution of the embodiment, preferably, the low-voltage switch cabinet provided by the embodiment further comprises a ground protection copper bar 7 arranged at the bottom of the cabinet 1, which improves the safety of the cabinet 1.
[0042] In an optional solution of the embodiment, preferably, an insulating partition plate 8 is arranged between the first cavity 11 and the second cavity 12, the insulating partition plate 8 separates the first cavity 11 and the second cavity 12, and the copper bar passes through the insulating partition plate 8 and is connected with the circuit breaker body 4.
[0043] In an optional solution of the embodiment, preferably, the circuit breaker body 4 is detachably arranged in the second cavity 12, the circuit breaker body 4 adopts an existing low-voltage universal circuit breaker, the circuit breaker is of a three-dimensional arrangement form, and is composed of a chassis, a side plate and a cross beam to form a frame, the frame can be clamped or installed in the cabinet 1 through screws, each-phase contact systems are installed on the chassis, an arc-extinguishing chamber is arranged inside, an operating mechanism is arranged in front of the circuit breaker and is connected with the contact system through a main shaft, the operating mechanism is arranged in the front, has "break" and "make" indications and a manual breaking button, and is electrically or manually operated to realize breaking and conduction of a conductive circuit.
[0044] In an optional solution of the embodiment, preferably, the cabinet 1 is arranged as a vertical cabinet, which saves horizontal space, facilitates cabinet splicing and saves space.
[0045] The principle and implementation mode of the utility model are described by applying specific examples, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.
Claims
1. A low voltage switchgear, characterized in that: The utility model relates to a kind of cabinet, including: Cabinet (1), the first cavity (11) and the second cavity (12) of vertical side by side are provided inside the cabinet (1); Incoming line busbar (2), it is arranged in the side wall of the first cavity (11), and one end can extend into the first cavity (11); Outgoing line busbar (3), it is arranged in the first cavity (11) and the side wall of the incoming line busbar (2) opposite another side wall, and one end can extend the first cavity (11);And Circuit breaker body (4), it is arranged in the second cavity (12), the incoming line busbar (2) and the outgoing line busbar (3) can be electrically connected with the circuit breaker body (4).
2. Low voltage switchgear according to claim 1, characterized in that: The incoming line busbar (2) includes A-phase incoming line (21), B-phase incoming line (22), C-phase incoming line (23) and working ground incoming line (24);The outgoing line busbar (3) includes A-phase outgoing line (31), B-phase outgoing line (32) and C-phase outgoing line (33);The A-phase incoming line (21), the B-phase incoming line (22) and the C-phase incoming line (23) are connected to the incoming line end (41) of the circuit breaker body (4), the A-phase outgoing line (31), the B-phase outgoing line (32) and the C-phase outgoing line (33) are connected to the outgoing line end (42) of the circuit breaker body (4), the A-phase incoming line (21), the B-phase incoming line (22) and the C-phase incoming line (23) are respectively communicated with the A-phase outgoing line (31), the B-phase outgoing line (32) and the C-phase outgoing line (33) by the circuit breaker body (4);The working ground incoming line (24) is used for grounding.
3. Low voltage switchgear according to claim 2, characterized in that: The A-phase incoming line (21), the B-phase incoming line (22), the C-phase incoming line (23), the A-phase outgoing line (31), the B-phase outgoing line (32) and the C-phase outgoing line (33) are electrically connected with the circuit breaker body (4) by overlapping copper bar;The working ground incoming line (24) extends to the lower side of the cabinet (1) by grounding copper bar and is grounded.
4. Low voltage switchgear according to claim 3, characterized in that: The A-phase incoming line (21), the B-phase incoming line (22), the C-phase incoming line (23), the A-phase outgoing line (31), the B-phase outgoing line (32) and the C-phase outgoing line (33) are connected to the overlapping copper bar and the grounding copper bar of the working ground incoming line (24) and are provided with support insulator (5) connected with the inner wall of the cabinet (1).
5. Low voltage switchgear according to claim 2, characterized in that: The A-phase incoming line (21), the B-phase incoming line (22) and the C-phase incoming line (23) are provided with monitoring component (6) on the loop connected with the circuit breaker body (4), and the monitoring component (6) is used for monitoring circuit information.
6. Low voltage switchgear according to claim 5, characterized in that: The monitoring component (6) is set as current transformer.
7. Low voltage switchgear according to claim 1, characterized in that: It further includes grounding protection copper bar (7) arranged at the bottom of the cabinet (1).
8. Low voltage switchgear according to claim 1, characterized in that: The first cavity (11) and the second cavity (12) are provided with insulating partition (8) between.
9. Low voltage switchgear according to claim 1, characterized in that: The circuit breaker body (4) can be detachably arranged in the second cavity (12).
10. Low voltage switchgear according to claim 1, characterized in that: The cabinet (1) is set as vertical cabinet.