Protection device for power distribution cabinet drawer and power distribution cabinet drawer
By arranging protective plates on the inlet and outlet sides of the distribution cabinet drawer, the arc problem caused by bare wire rows is solved, which improves safety and reduces costs.
Patent Information
- Application Number
- CN202422205450.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In traditional power distribution cabinet drawers, exposed wire rows lead to arcing, affecting safety and high cost.
The inlet side protection plate is arranged on the inlet side of the drawer, and the outlet side protection plate is arranged on the outlet side to cover the line row and the connecting conductor to reduce arcing.
It improves the working safety of the distribution cabinet drawers, reduces the possibility of arcing, and reduces additional production and construction costs.
Smart Images
Figure CN223079621U_ABST
Abstract
Description
Technical Field
[0001] Example embodiments of the present disclosure generally relate to the field of electrical equipment, and in particular to a protection device for a power distribution cabinet drawer and a power distribution cabinet drawer. Background Art
[0002] The drawer of the power distribution cabinet is an important part of the power distribution cabinet. It can place different electrical circuits or equipment in different areas for easy management and maintenance. The drawer of the power distribution cabinet mainly includes electrical components such as circuit breakers, contactors, relays, fuses, etc. These components are combined and installed according to different circuit requirements. The drawer may also be equipped with accessories such as terminal blocks and wire strips to facilitate electrical connection and installation. Utility Model Content
[0003] In a first aspect of the present disclosure, a protection device for a power distribution cabinet drawer is provided. The protection device comprises: an incoming line side protection plate, arranged on the incoming line side of the drawer, and comprises: at least one cover plate, coupled to the housing of the drawer, and arranged on one side of a plurality of line rows of the drawer to at least partially cover the plurality of line rows.
[0004] In some embodiments, the incoming line side protection plate further includes a clearance hole formed on at least one layer of the cover plate for the incoming line terminal and / or the outgoing line terminal of the drawer to pass through.
[0005] In some embodiments, the incoming line side protection plate further includes at least one first mounting hole, and the at least one first mounting hole is formed on at least one layer of the cover plate for a fastener to pass through and couple with the shell of the drawer.
[0006] In some embodiments, the housing includes a first accommodating groove, which is arranged to open toward the incoming line side protection plate to at least partially accommodate the incoming line side protection plate.
[0007] In some embodiments, the incoming line side protection plate further includes at least one pair of bending portions formed on both sides of at least one layer of the cover plate in the width direction and extending toward one side of the shell.
[0008] In some embodiments, at least one layer of cover plates includes: a plurality of second cover plates arranged to correspond to the plurality of line rows respectively, and each of the plurality of second cover plates is arranged on a side of the corresponding line row away from the housing and is suitable for covering the corresponding line row.
[0009] In some embodiments, the at least one cover plate includes: a third cover plate coupled to the housing and adapted to cover a plurality of line rows.
[0010] In some embodiments, at least one layer of cover plates includes: a plurality of second cover plates, which are arranged to correspond to a plurality of busbars respectively, and each of the plurality of second cover plates is arranged on a side of the corresponding busbar away from the housing and is adapted to cover the corresponding busbar; and a third cover plate, which is coupled to the housing and is arranged on a side of the plurality of second cover plates away from the plurality of busbars and is adapted to cover the plurality of second cover plates and the plurality of busbars.
[0011] In some embodiments, the protection device further includes: an outgoing line side protection plate, which is arranged on the outgoing line side of the drawer and includes: a first cover plate, which is coupled to the housing.
[0012] In some embodiments, the outgoing line side protection plate further includes: at least one outgoing line hole, which is formed on the first cover plate for an outgoing line connection conductor connected to the outgoing line terminal of the drawer to pass through from the outgoing line side protection plate towards the first side of the housing and extend to the second side opposite to the first side of the outgoing line side protection plate.
[0013] In some embodiments, the outgoing line side protection plate further includes at least one second mounting hole, which is formed on the first cover plate for a fastener to pass through and be coupled to the housing.
[0014] In some embodiments, the housing includes a second receiving groove, which is formed on a side of the housing facing the first cover plate and is arranged with an opening facing the first cover plate to at least partially receive the first cover plate.
[0015] In some embodiments, the outgoing line side protection plate further includes: a partition plate, which is arranged on a side of the first cover plate away from at least one layer of cover plates and includes: a support portion, which is coupled to the first cover plate and is adapted to extend along a side away from the housing; an extension portion, which is coupled to the support portion; and an incoming line hole, which is formed on the extension portion for the outgoing line connection conductor to pass through from the second side and extend to the first side.
[0016] In some embodiments, one end of the outgoing line connection conductor away from the outgoing line terminal extends along an outgoing line direction perpendicular to the arrangement direction of the incoming line side protection plate and the outgoing line side protection plate.
[0017] In a second aspect of the present disclosure, there is provided a power distribution cabinet drawer. The power distribution cabinet drawer includes: a housing; a busbar, which is arranged in the housing; and a protection device provided according to the first aspect of the present disclosure, which is coupled to the housing and at least partially covers the busbar.
[0018] By arranging an incoming line side protection plate on the incoming line side of the drawer and an outgoing line protection plate on the outgoing line side of the drawer. At least one layer of cover plate of the incoming line side protection plate is coupled to the housing of the drawer and arranged on the side of the busbar away from the housing, thereby covering the busbar exposed inside the drawer. The outgoing line side protection plate is arranged on the outgoing line side of the drawer and is adapted to shield at least the outgoing line connection conductor coupled to the outgoing line terminal on the outgoing line side. In this way, the phenomenon of arcing between the busbars inside the drawer during the operation of the drawer can be reduced, thereby improving the safety during the operation of the drawer.
[0019] It should be understood that the content described in this part is not intended to define the key features or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Combined with the accompanying drawings and referring to the following detailed description, the above and other features, advantages and aspects of the embodiments of the present disclosure will become more obvious. In the drawings, the same or similar reference numerals represent the same or similar elements, where:
[0021] Figure 1 Shows a schematic diagram of the overall structure of a distribution cabinet drawer according to some embodiments of the present disclosure;
[0022] Figure 2 Shows a schematic diagram of the overall structure of a drawer with an incoming line side protection plate installed according to some embodiments of the present disclosure;
[0023] Figure 3 Shows an exploded view of the connection relationship between a drawer and an incoming line side protection plate according to some embodiments of the present disclosure;
[0024] Figure 4 Shows a schematic diagram of the overall structure of a third cover plate according to some embodiments of the present disclosure;
[0025] Figure 5 Shows a schematic diagram of the connection relationship between an incoming line side protection plate and a drawer according to some other embodiments of the present disclosure;
[0026] Figure 6 Shows an exploded view of the connection relationship between an incoming line side protection plate and a drawer according to some other embodiments of the present disclosure;
[0027] Figure 7 Shows a schematic diagram of the overall structure of a second cover plate according to some embodiments of the present disclosure;
[0028] Figure 8 Shows a schematic diagram of the connection relationship between an incoming line side protection plate and a drawer according to some other embodiments of the present disclosure;
[0029] Figure 9 Shows a schematic diagram of the connection relationship between the outgoing line side protection plate and the drawer according to some embodiments of the present disclosure;
[0030] Figure 10 Shows a schematic diagram of the overall structure of the outgoing line side protection plate according to some embodiments of the present disclosure;
[0031] Figure 11 Shows a schematic diagram of the connection relationship between the outgoing line side protection plate and the drawer according to some other embodiments of the present disclosure; and
[0032] Figure 12 Shows a schematic diagram of the layout relationship between the outgoing line side protection plate and the outgoing line connection conductor according to some other embodiments of the present disclosure. Detailed implementation manners
[0033] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.
[0034] It should be noted that the titles of any sections / subsections provided herein are not restrictive. Various embodiments are described throughout this document, and any type of embodiment can be included under any section / subsection. In addition, the embodiments described in any section / subsection can be combined with any other embodiments described in the same section / subsection and / or different sections / subsections in any manner.
[0035] In the description of the embodiments of the present disclosure, the term "including" and its like should be understood as open inclusion, that is, "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". There may also be other explicit and implicit definitions hereinafter. The terms "first", "second", etc. may refer to different or the same objects. There may also be other explicit and implicit definitions hereinafter.
[0036] As briefly mentioned above, in a traditional power distribution cabinet drawer (also referred to as a drawer hereinafter), on the installation surface of the circuit breaker, the busbars of the drawer are arranged naked inside the drawer. When the voltage or electric power carried by the drawer is too large, an arc may be generated between the copper bars, resulting in a short circuit between three phases or between a phase and the ground, and the high temperature of the arc may affect the service life of various components inside the drawer.
[0037] In the traditional solution, the exposed busbars are covered with insulating materials on the outside to achieve insulation isolation between multiple busbars. However, this method of locally insulating and protecting the busbars has a high cost, and the accuracy requirement for the boundary between the covered part and the exposed part is high during construction, resulting in additional production and construction costs.
[0038] According to the protection device for a distribution cabinet drawer and the distribution cabinet drawer provided by the present disclosure, the above problems and other potential problems existing in the traditional solution are solved or at least partially solved. According to some embodiments of the present disclosure, an incoming line side protection plate is arranged on the incoming line side of the drawer, and an outgoing line side protection plate is arranged on the outgoing line side of the drawer. At least one layer of cover plate of the incoming line side protection plate is coupled to the housing of the drawer and arranged on the side of the busbar facing away from the housing, thereby covering the busbars exposed inside the drawer. The outgoing line side protection plate is arranged on the outgoing line side of the drawer and is adapted to cover at least the outgoing line connection conductors coupled to the outgoing line terminals on the outgoing line side. In this way, the phenomenon of arcing between the busbars inside the drawer during the operation of the drawer can be reduced, thereby improving the safety during the operation of the drawer.
[0039] Figure 1 FIG. shows a schematic diagram of the overall structure of a distribution cabinet drawer according to some embodiments of the present disclosure. As Figure 1 shown, the drawer generally includes a housing 1, an incoming line side 11 and an outgoing line side 12 arranged on the housing 1. A plurality of terminal blocks (for example, an incoming line terminal 14 arranged on the incoming line side 11 and an outgoing line terminal 15 arranged on the outgoing line side 12) are respectively installed on the incoming line side 11 and the outgoing line side 12 of the housing 1. A busbar 13 is also connected to the terminal block (as Figure 3 shown). A protection device is coupled to the side of the busbar 13 facing away from the housing 1.
[0040] It should be understood that the housing of the drawer according to the embodiments of the present disclosure can be any suitable structure in the drawer for fixing the protection device. For example, the housing 1 can be the main mounting plate of the drawer (for example, PolyFast, etc.). In addition, the housing 1 can also include sheet metal parts, injection molded parts, etc. of the drawer main body structure.
[0041] The protection device includes an incoming line side protection plate 2 arranged on the incoming line side 11 of the drawer and an outgoing line side protection plate 3 arranged on the outgoing line side 12 of the drawer. The incoming line side protection plate 2 and the outgoing line side protection plate 3 are respectively coupled to the housing 1 along the arrangement direction. The incoming line side protection plate 2 includes at least one layer of cover plate, and the at least one layer of cover plate is coupled to the housing 1 and is adapted to provide shielding protection for at least the incoming line terminal 14 and the busbar 13 coupled to the incoming line terminal 14. The outgoing line side protection plate 3 is adapted to provide protection for the outgoing line terminal 15 and the outgoing line connection conductors coupled to the outgoing line terminal 15 (for example, the outgoing flexible busbar 5 mentioned below). The incoming line side protection plate 2 and the outgoing line side protection plate 3 will be specifically described below.
[0042] Figure 2 The overall structure diagram of a drawer with an incoming line side protection plate installed according to some embodiments of the present disclosure is shown. Figure 3 An exploded view of the connection relationship between the drawer and the incoming line side protection plate according to some embodiments of the present disclosure is shown. Figure 2 and Figure 3 As shown, at least one cover plate of the incoming line protection plate 2 includes a third cover plate 21 , which is attached to a side of the housing 1 facing away from the line row 13 and is arranged between the drawer and the circuit breaker 4 .
[0043] Figure 4 FIG. 2 shows a schematic diagram of the overall structure of a third cover plate according to some embodiments of the present disclosure. Figure 4 As shown, in some embodiments, at least one clearance hole 211 is further provided on the third cover plate 21. When the third cover plate 21 is attached to the line bar 13, the incoming terminal 14 and / or the outgoing terminal 15 of the drawer can be inserted into the clearance hole 211, thereby making the third cover plate 21 and the line bar 13 closely fit.
[0044] In some embodiments, the cross-sectional shape of the clearance hole 211 is related to the cross-sectional shape of the incoming terminal 14 or the outgoing terminal 15. For example, if the cross-sectional shape of the incoming terminal 14 perpendicular to the axis is a regular octagon, the clearance hole 211 corresponding to the incoming terminal 14 in the third cover plate 21 is a regular octagon. In this way, the gap between the clearance hole 211 and the wiring terminal can be reduced, thereby improving the shielding effect of the third cover plate 21 on the wire row 13. Reduce the occurrence of arcs between the wire row 13 and the wiring terminal through the clearance hole 211.
[0045] In some embodiments, the third cover plate 21 is further provided with at least one first mounting hole 212, and the first mounting hole 212 is suitable for fasteners (e.g., bolts, etc.) to pass through, and the fasteners are connected to the drawer housing 1 (e.g., threaded connection) after passing through. In this way, the third cover plate 21 is coupled to the housing 1 by means of the connection between the fasteners and the housing 1.
[0046] In some embodiments, in order to allow the third cover plate 21 to be more tightly coupled to the housing 1 , at least one groove or through hole may be adaptively formed on the third cover plate 21 to match with a corresponding raised feature on the housing 1 .
[0047] Figure 5 A schematic diagram showing the connection relationship between the incoming line side protection plate and the drawer according to some other embodiments of the present disclosure is shown. Figure 6 An exploded view of the connection relationship between the incoming line side protection plate and the drawer according to some other embodiments of the present disclosure is shown. Figure 5 and Figure 6As shown, in some embodiments, the incoming line side protection plate 2 includes a plurality of second covers 22, and the plurality of second covers 22 correspond to a plurality of busbars 13 connected to a plurality of incoming line terminals 14 in the drawer. Each second cover 22 covers the side of the corresponding busbar 13 facing away from the housing 1 and extends towards the outgoing line terminal 15 along the arrangement direction (i.e., the extending direction of the busbar 13). Thus, the plurality of second covers 22 can shield the plurality of busbars 13 respectively. In some embodiments, there are three groups of busbars 13, incoming line terminals 14, and outgoing line terminals 15 in the drawer, respectively corresponding to three-phase power supply. Correspondingly, there are three second covers 22, and the three second covers 22 are arranged corresponding to the three busbars 13 respectively.
[0048] Figure 7 The overall structural schematic diagram of the second cover according to some embodiments of the present disclosure is shown. As Figure 7 shown, in some embodiments, each second cover 22 is further provided with a relief hole 221. When the second cover 22 is coupled to the housing 1 and shields the corresponding busbar 13, the incoming line terminal 14 can pass through the relief hole 221. Similar to the relief hole 211 of the third cover 21 in the above text, the cross-section of the relief hole 221 is the same as or similar to the cross-section of the incoming line terminal 14, thereby reducing the gap between the relief hole 221 and the incoming line terminal 14.
[0049] In some embodiments, the second cover 22 further includes a first mounting hole 222, and the first mounting hole 222 is adapted to accommodate a fastener to pass through, so that the second cover 22 is fixed to the housing 1 by the coupling of the fastener and the housing 1 (for example, the threaded fit of the fastener and the housing 1).
[0050] In some embodiments, the incoming line side protection plate 2 further includes at least a pair of bending portions 223, and the bending portions 223 are arranged on both sides of the second cover 22 along the width direction perpendicular to the arrangement direction. The bending portions 223 are adapted to extend towards the housing 1 side, so that after the second cover 22 is coupled to the housing 1, a pair of bending portions 223 can be at least partially arranged outside the side edges of the busbar 13 along the width direction. In this way, the protection ability of the second cover 22 for the busbar 13 is further improved.
[0051] Figure 8 The schematic diagram of the connection relationship between the incoming line side protection plate and the drawer according to some other embodiments of the present disclosure is shown. As Figure 8As shown, the incoming line side protection plate 2 may include a plurality of second cover plates 22 and a third cover plate 21 disposed on a side of the plurality of second cover plates 22 facing away from the bus bar 13. The relief holes 221 of the plurality of second cover plates 22 coincide with the relief holes 211 at corresponding positions on the third cover plate 21, and the first mounting holes 222 of the plurality of second cover plates 22 coincide with the corresponding first mounting holes 212 in the third cover plate 21. Thus, the fastener can sequentially pass through the third cover plate 21 and the second cover plates 22, and fix the second cover plates 22 and the third cover plate 21 to the housing 1 simultaneously. In this state, the incoming line terminals 14 can also pass through the relief holes 221 in the second cover plates 22 and the relief holes 211 in the third cover plate 21 simultaneously. By coupling the second cover plates 22 and the third cover plate 21 to the housing 1 together, the bus bars 13 of the drawer can be further protected, and the possibility of arcing between the plurality of bus bars 13 can be reduced.
[0052] Return to reference Figure 4 、 Figure 6 、 Figure 8 In some embodiments, a first receiving groove 16 is further formed on a side of the housing 1 facing the incoming line side protection plate 2. The incoming line side protection plate 2 can be at least partially embedded in the first receiving groove 16. For example, after the incoming line side protection plate 2 is embedded in the receiving groove, a side of the incoming line side protection plate 2 facing away from the bus bar 13 is flush with the edge of the first receiving groove 16, so as to facilitate the stable coupling of the circuit breaker 4 and the drawer.
[0053] Figure 9 FIG. shows a schematic connection diagram of an outgoing line side protection plate and a drawer according to some embodiments of the present disclosure. Figure 10 FIG. shows a schematic overall structure diagram of an outgoing line side protection plate according to some embodiments of the present disclosure. As Figure 9 and Figure 10 shown, the outgoing line side protection plate includes a first cover plate 31, and the first cover plate 31 is coupled to the housing 1. In some embodiments, a plurality of second mounting holes 32 are formed on the first cover plate 31, and fasteners can be passed through the second mounting holes 32, so as to fix the first cover plate 31 to the housing 1 through the fasteners. In this way, the first cover plate 31 can at least partially cover the outgoing line connection conductor connected to the outgoing line terminal 15, thereby improving the insulation performance of the outgoing line side 3 of the drawer.
[0054] In some embodiments, a plurality of outgoing line holes 33 are further formed on the first cover plate 31, and the plurality of outgoing line holes 33 correspond to the plurality of outgoing line terminals 15. After the first cover plate 31 is coupled to the housing 1, a side of the first cover plate 31 facing the housing 1 is the first side, and a side facing away from the housing 1 is the second side. The outgoing line connection conductor connected to the outgoing line terminal 15 passes through the outgoing line holes 33 from the first side and extends to the second side. The first cover plate 31 can at least shield the connection portion between the outgoing line connection conductor and the outgoing line terminal 15, thereby improving the electrical safety of the drawer.
[0055] In some embodiments, the outgoing line connecting conductor may be a busbar, a wire, etc. that are coated or uncoated with insulating material. The outgoing line connecting conductor may also be a flexible busbar woven from metal wires, such as a flexible copper busbar, etc. In addition, the outer side of the flexible busbar may be coated with an insulating outer skin.
[0056] In some embodiments, a second receiving groove 17 is further formed on the side of the housing 1 facing the outgoing line side protection plate 3, and at least a part of the first cover plate 31 is embedded in the second receiving groove 17. In some embodiments, the first cover plate 31 is embedded in the second receiving groove 17, and the second side of the first cover plate 31 is flush with the edge of the receiving groove. This facilitates the coupling of other functional modules in the power distribution cabinet with the drawer.
[0057] In some embodiments, the first cover plate 31 further includes a partition plate 34, and the partition plate 34 is arranged on the side of the first cover plate 31 away from the incoming line side protection plate 2. The partition plate 34 includes a support portion 341, an extension portion 342, and an incoming line hole 343. The support portion 341 is coupled to the first cover plate 31 and is adapted to bend and extend in a direction away from the housing 1. The extension portion 342 is coupled to the support portion 341 and is adapted to extend away from the first cover plate 31 in the arranged direction. The incoming line hole 343 is formed in the extension portion 342, and the outgoing line connecting conductor passing through the incoming line hole 343 to the second side of the first cover plate 31 can enter the first side through the incoming line hole 343. In some embodiments, the outgoing line connecting conductor coupled to the outgoing line terminal 15 may be a flexible copper busbar, and the outer side of the flexible copper busbar is coated with an insulating outer skin.
[0058] Figure 11 The schematic diagram of the connection relationship between the outgoing line side protection plate and the drawer in some other embodiments according to the present disclosure is shown. Figure 12 The schematic diagram of the layout relationship between the outgoing line side protection plate and the cable in some other embodiments according to the present disclosure is shown. As Figure 11 and Figure 12 shown, in some embodiments, after the outgoing line connecting conductor (for example, the flexible busbar 5) passes through the outgoing line hole 33, it may further extend in the outgoing line direction perpendicular to the arrangement direction of the incoming line side protection plate 2 and the outgoing line side protection plate 3.
[0059] In some embodiments, an outgoing line copper busbar may be arranged on one side of the drawer in the outgoing line direction in the power distribution cabinet, and a partition plate may be arranged between the outgoing line copper busbar and the drawer. In some embodiments, the partition plate may include a positioning plate, and the positioning plate and the partition plate may be detachably connected, so that a fixing hole for the flexible busbar 5 may be formed between the positioning plate and the partition plate, thus facilitating the installation of the flexible busbar 5.
[0060] The various implementations of the present disclosure have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed implementations. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The choice of terms used herein is intended to best explain the principles of the implementations, the practical application, or the improvement of the technology in the market, or to enable other ordinary skilled artisans in the art to understand the various implementation manners disclosed herein.
Claims
1. A protection device for a distribution cabinet drawer, characterized in that, include: The line inlet side protection plate (2) is arranged on the line inlet side (11) of the drawer and comprises: At least one cover plate is coupled to the housing (1) of the drawer and is arranged on one side of the plurality of wire rows (13) of the drawer to at least partially cover the plurality of wire rows (13).
2. The protection device according to claim 1, characterized in that, The incoming line side protection plate (2) further comprises a clearance hole formed on the at least one layer of cover plate for allowing the incoming line terminal (14) and / or the outgoing line terminal (15) of the drawer to pass through.
3. The protection device according to claim 1, characterized in that, The incoming line side protection plate (2) further comprises at least one first mounting hole, wherein the at least one first mounting hole is formed on the at least one layer of cover plate, so as to allow a fastener to pass through and couple with the shell (1) of the drawer.
4. The protection device according to claim 1, wherein The housing (1) comprises a first accommodating groove (16) which is arranged to open toward the incoming line protection plate (2) so as to at least partially accommodate the incoming line protection plate (2).
5. The protection device according to claim 1, characterized in that, The incoming line side protection plate (2) further comprises at least one pair of bent portions (223) formed on both sides in the width direction of the at least one layer of cover plate and extending towards one side of the housing (1).
6. The protection device according to any one of claims 1-5, characterized in that, The at least one layer of cover plates comprises: a plurality of second cover plates (22) arranged to correspond to the plurality of line rows (13), respectively, and Each second cover plate (22) of the plurality of second cover plates (22) is arranged on a side of the corresponding line row (13) facing away from the housing (1), and is suitable for covering the corresponding line row (13).
7. The protection device according to any one of claims 1-5, characterized in that The at least one layer of cover plate comprises: a third cover plate (21) coupled to the housing (1) and suitable for covering a plurality of line rows (13).
8. The protection device according to any one of claims 1-5, characterized in that, The at least one layer of cover plates comprises: a plurality of second cover plates (22) arranged to correspond to the plurality of line rows (13), respectively, wherein each second cover plate (22) of the plurality of second cover plates (22) is arranged on a side of the corresponding line row (13) away from the housing (1) and is suitable for covering the corresponding line row (13); and A third cover plate (21) is coupled to the housing (1) and is arranged on a side of the plurality of second cover plates (22) away from the plurality of line rows (13), and is suitable for covering the plurality of second cover plates (22) and the plurality of line rows (13).
9. The protection device according to any one of claims 1-5, characterized in that, Also includes: The outgoing line side protection plate (3) is arranged on the outgoing line side (12) of the drawer and comprises: a first cover plate (31) coupled to the housing (1).
10. The protection device according to claim 9, characterized in that, The outgoing line side protection plate further comprises: at least one outgoing line hole (33) formed on the first cover plate (31) for allowing an outgoing line connection conductor connected to an outgoing line terminal (15) of the drawer to pass through the outgoing line side protection plate (3) toward a first side of the housing (1) and extend to a second side of the outgoing line side protection plate (3) opposite to the first side.
11. The protection device according to claim 10, characterized in that, The outlet side protection plate (3) further comprises at least one second mounting hole (32) formed on the first cover plate (31) for a fastener to pass through and then couple with the housing (1).
12. The protection device according to claim 10, characterized in that, The housing (1) includes a second receiving groove (17) formed on a side of the housing (1) facing the first cover plate (31) and arranged to open towards the first cover plate (31) to at least partially receive the first cover plate (31).
13. The protection device according to claim 10, characterized in that, The outgoing line side protection plate (3) further includes: a partition plate (34) arranged on a side of the first cover plate (31) away from the at least one layer of cover plates, and including: a support portion (341) coupled to the first cover plate (31) and adapted to extend along a side away from the housing (1); an extension portion (342) coupled to the support portion (341); and an incoming line hole (343) formed in the extension portion (342) for the outgoing line connection conductor to pass through from the second side and extend to the first side.
14. The protection device according to claim 10, characterized in that, One end of the outgoing line connection conductor away from the outgoing line terminal (15) extends along an outgoing line direction perpendicular to the arrangement direction of the incoming line side protection plate (2) and the outgoing line side protection plate (3).
15. A distribution cabinet drawer, characterized in that, Comprising a housing (1); a bus bar (13) arranged in the housing (1); And a protection device according to any one of claims 1-14, coupled to the housing (1) and at least partially covering the bus bar (13).