CN219420719U - Combiner box and photovoltaic power station - Google Patents
Combiner box and photovoltaic power station Download PDFInfo
- Publication number
- CN219420719U CN219420719U CN202320331217.5U CN202320331217U CN219420719U CN 219420719 U CN219420719 U CN 219420719U CN 202320331217 U CN202320331217 U CN 202320331217U CN 219420719 U CN219420719 U CN 219420719U
- Authority
- CN
- China
- Prior art keywords
- fuses
- box
- fuse
- row
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Fuses (AREA)
Abstract
The utility model discloses a junction box, which comprises a box body and a fuse; the bottom plate of the box body is provided with a plurality of threading holes; the number of the fuses is multiple, and the fuses are in one-to-one correspondence with the threading holes; the fuses are arranged in the box body, and the first ends of the fuses face to the bottom plate respectively; the straight line space between the connecting terminal at the first end of the fuse and the corresponding threading hole in the box body is smooth. The first end of the fuse in this collection flow box is towards the bottom plate of box, and is unblocked by the straight line space between the wiring hole that corresponds on the terminal of the first end of fuse to the bottom plate in the box, guarantees that the bus cable is introduced the box by the wiring hole after through by this straight line space lug connection to the binding post department of the first end of fuse, need not to buckle the copper aluminium transition grafting terminal of bus cable, and the bus cable of being convenient for is connected with the fuse, reduces the installation construction degree of difficulty. The utility model also discloses a photovoltaic power station applying the junction box, and the junction cable connected with the photovoltaic module is convenient to assemble into the junction box.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to a junction box and a photovoltaic power station using the junction box.
Background
In order to reduce the cost and increase the efficiency, the large-scale photovoltaic power station uses low-price aluminum wires to replace expensive copper wires, and particularly in the large-scale power station adopting a centralized inversion scheme, 6 square aluminum wires are generally used as bus cables to replace original 4 square copper wires so as to realize copper-aluminum transition from the photovoltaic module side to the bus box side. At present, copper-aluminum transition from copper wires led out by the photovoltaic module to bus cables is realized by adopting a copper-aluminum transition connecting pipe at the photovoltaic module side, and aluminum-copper transition from bus cables to the bus box is realized by adopting a copper-aluminum transition plug terminal at the bus box side; the copper-aluminum transition plug-in terminal penetrates through the threading hole of the bottom plate in the box body of the junction box and then is connected with the fuse in the box body.
In the prior art, the fuses of the bus box are arranged in two rows, the wiring terminals connected with the bus cables in the upper row face upwards, the wiring terminals connected with the bus cables in the lower row face downwards, wherein the bus cables corresponding to the upper row can be connected to the fuses only by bending the copper-aluminum transition plug terminals after being led in from the bottom end of the box body, however, the length and the hardness of the copper-aluminum transition plug terminals are large, the bending radius is large, the threading space in the box body is limited, and the installation and construction difficulty is large.
In addition, bending is carried out to copper aluminium transition grafting terminal, especially for adapting the inside threading space of box and excessively bending, can increase copper aluminium transition grafting terminal's calorific capacity, reduce the generated energy, increase the running risk, also accelerate the ageing of bus cable.
Therefore, how to avoid bending the copper-aluminum transition plug terminal at the end of the bus cable when connecting the bus cable to the bus box, so as to reduce the difficulty of installation and construction is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the utility model provides a junction box, the first end of the fuse faces to the bottom plate, and the linear space between the terminal of the first end of the fuse and the corresponding threading hole on the bottom plate is smooth, so that the junction cable is ensured to be directly connected to the terminal of the first end of the fuse through the linear space after being led into the box body from the threading hole, the copper-aluminum transition plug-in terminal of the junction cable is not required to be bent, the junction cable is conveniently connected with the fuse, and the installation and construction difficulties are reduced. The utility model also provides a photovoltaic power station applying the junction box, which is convenient for assembling the junction cable connected with the photovoltaic module into the junction box, has small installation and construction difficulty and is beneficial to shortening the construction and later maintenance period.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a combiner box, comprising:
the box body is provided with a plurality of threading holes on the bottom plate;
the number of the fuses is multiple, and the fuses are in one-to-one correspondence with the threading holes; the fuses are arranged in the box body, and the first ends of the fuses face the bottom plate respectively;
in the box body, a straight line space between the connecting terminal at the first end of the fuse and the corresponding threading hole is smooth.
Preferably, in the above junction box, the connection terminal of the first end of the fuse and the corresponding threading hole are aligned along a vertical direction.
Preferably, in the above junction box, the fuses are mounted on a back plate of the box body and are arranged in a plurality of rows in a direction parallel to the back plate; among the multiple rows of fuses vertically arranged, the distances between the fuses and the backboard are different in different rows.
Preferably, in the above junction box, in two rows of fuses adjacent in the vertical direction, a row located above is farther from the back plate.
Preferably, in the above-mentioned junction box, in each row of the fuses, the threading Kong Yici corresponding to each fuse is arranged into a threading hole row; the distance between the fuses in each row of fuses is consistent with the distance between the threading holes in the corresponding threading hole row.
Preferably, in the above-mentioned junction box, in each row of the fuses, the fuses are arranged one by one in a horizontal direction.
Preferably, in the above-mentioned junction box, in each row of said fuses, all the fuses are mounted on the same guide rail; the guide rails arranged along the vertical direction are arranged on the back plate through the same bracket;
the support comprises support plates which are bent into a step shape, and different guide rails are fixed at different steps away from the backboard in the support plates.
Preferably, in the above junction box, the fuses include a plurality of positive-electrode fuses and a plurality of negative-electrode fuses, wherein the positive-electrode fuses are arranged in a plurality of rows, and each row of positive-electrode fuses is arranged on one side in the box body one by one along a vertical direction; the negative electrode fuses are arranged in a plurality of rows, and the negative electrode fuses in each row are arranged on the other side in the box body one by one along the vertical direction.
Preferably, in the above junction box, the connection terminal at the second end of the fuse is connected to a copper busbar directly or through a copper busbar, and the copper busbar is connected to the isolating switch in the box.
The photovoltaic power station comprises a photovoltaic module and a junction box, wherein the photovoltaic module is connected with the junction box through a junction cable; the bus cable is an aluminum wire; the converging box is any one of the technical schemes; one end of the bus cable penetrates into the box body of the bus box and is connected with the wiring terminal at the first end of the fuse through the copper-aluminum transition plug-in terminal.
The utility model provides a junction box, which comprises a box body and a fuse; the bottom plate of the box body is provided with a plurality of threading holes; the number of the fuses is multiple, and the fuses are in one-to-one correspondence with the threading holes; the fuses are arranged in the box body, and the first ends of the fuses face to the bottom plate respectively; the straight line space between the connecting terminal at the first end of the fuse and the corresponding threading hole in the box body is smooth.
In the collection flow box that this embodiment provided, not only the first end of fuse is towards the bottom plate of box, and the straight line space between the wiring hole that corresponds on the bottom plate by the wiring terminal of the first end of fuse in the box is unblocked moreover, ensures that the bus cable is introduced the box by the wiring hole after through by this straight line space lug connection to the wiring terminal department of the first end of fuse, need not to buckle the copper aluminium transition grafting terminal of bus cable, and the bus cable of being convenient for is connected with the fuse, reduces the installation construction degree of difficulty.
The utility model also provides a photovoltaic power station applying the junction box, which is convenient for assembling the junction cable connected with the photovoltaic module into the junction box, has small installation and construction difficulty and is beneficial to shortening the construction and later maintenance period.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a junction box according to an embodiment of the present utility model;
fig. 2 is a schematic perspective view of another angle of the combiner box according to the embodiment of the present utility model;
fig. 3 is a schematic perspective view of another angle of the combiner box according to the embodiment of the present utility model;
fig. 4 is a layout diagram of fuses in a combiner box according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a copper-aluminum transition plug terminal according to an embodiment of the present utility model;
wherein, in fig. 1-5:
a fuse 101; an isolation switch 102; a bus bar 103; a mounting hole 131; a case 104; a bottom plate 141; a threading hole 1411; a back plate 142; a bracket 105; a guide rail 106; bus cable 201; copper aluminum transition plug terminals 211; copper tip 2111; an aluminum tip 2112; plug wire hole 2113.
Detailed Description
The embodiment of the utility model discloses a bus box, wherein the first end of a fuse of the bus box faces to a bottom plate, a linear space between a wiring terminal at the first end of the fuse and a corresponding threading hole on the bottom plate is smooth, so that a bus cable is ensured to be directly connected to the wiring terminal at the first end of the fuse through the linear space after being led into a box body from the threading hole, the copper-aluminum transition plug-in terminal of the bus cable is not required to be bent, the bus cable is conveniently connected with the fuse, and the installation and construction difficulty is reduced. The embodiment of the utility model also discloses a photovoltaic power station applying the junction box, which is convenient for assembling the junction cable connected with the photovoltaic module into the junction box, has small installation and construction difficulty and is beneficial to shortening the construction and later maintenance period.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, an embodiment of the present utility model provides a combiner box, which includes a box 104 and a fuse 101; the bottom plate 141 of the box 104 is provided with a plurality of threading holes 1411; the number of the fuses 101 is plural, and the fuses are in one-to-one correspondence with the threading holes 1411 (namely, the number of the threading holes 1411 is the same as that of the fuses 101, and bus cables 201 penetrating through the box body by the threading holes 1411 are respectively connected to different fuses 101); the fuses 101 are installed in the case 104, and first ends of the fuses 101 face the bottom plate 141, respectively; wherein, the straight line space between the connecting terminal of the first end of the fuse 101 and the corresponding threading hole 1411 in the box 104 is smooth.
In the junction box provided in this embodiment, not only the first end of the fuse 101 faces the bottom plate 141 of the box 104, but also the straight line space between the terminal of the first end of the fuse 101 in the box 104 and the corresponding threading hole 1411 on the bottom plate 141 is smooth, so that the junction cable 201 is ensured to be directly connected to the junction terminal of the first end of the fuse 101 through the straight line space after being led into the box 104 by the threading hole 1411, the copper-aluminum transition plug terminal 211 of the junction cable 201 is not required to be bent, the junction cable 201 is convenient to be connected with the fuse 101, and the installation and construction difficulty is reduced.
In addition, the combiner box that this embodiment provided can avoid copper aluminium transition grafting terminal 211 to buckle, both makes things convenient for the installation of bus cable 201 threading, prevents to increase the calorific capacity of copper aluminium transition grafting terminal 211, reduces photovoltaic power generation system's loss of generating heat to the condition that takes place to influence the generated energy, increase the running risk also protects the bus cable to avoid ageing with higher speed.
Furthermore, in the junction box provided in this embodiment, all the threading holes 1411 are formed in the bottom plate 141 of the box 104, so that the holes are prevented from being formed in the top surface and the side surface of the box 104, the waterproof performance of the junction box is improved, and the junction box is more suitable for the outdoor environment of the photovoltaic power station site.
In order to shorten the length of the bus bar 201 and to arrange the bus bar 201 penetrating into the box 104 in order to facilitate the later maintenance and inspection, in the above-mentioned bus bar box, the connection terminal of the first end of the fuse 101 and the threading hole 1411 corresponding to the fuse 101 are aligned along the vertical direction.
Specifically, in the above-described junction box, the fuses 101 are mounted to the back plate 142 of the box body 104 and arranged in a plurality of rows in a direction parallel to the back plate 142. To fully utilize the vertical space within the box 104, the fuse rows are arranged in a vertical arrangement.
The box 104 is further provided with a top plate opposite to the bottom plate 141, a panel opposite to the back plate 142, and two side plates arranged opposite to each other, wherein the two side plates are respectively connected with the panel and the back plate 142, the panel, one side plate, the back plate 142 and the other side plate are sequentially connected and enclose an annular side wall, and the top plate and the bottom plate 141 are respectively sealed at the top end and the bottom end of the annular side wall.
As shown in fig. 4, in order to avoid the lower fuse 101 from blocking the linear space between the connection terminal of the first end of the upper fuse 101 and the corresponding threading hole 1411, and to prevent the bus bar 201 from being unable to reach the upper fuse 101 from the linear space and bending the copper-aluminum transition plug terminal 211, the lower row of fuses 101 may be arranged in a spaced arrangement such that the linear space between the connection terminal of the first end of the upper fuse 101 and the corresponding threading hole 1411 passes through the gap between the lower fuses 101.
However, in order to save the size of the case 104 in the arrangement direction of the fuses 101 in each row and prevent the bus cables 201 connected to the fuses 101 in the lower row and the fuses 101 in the upper row from being arranged to cross each other to affect heat dissipation, in the above bus box, the distances between the fuses 101 in different rows and the back plate 142 are different among the rows of fuses 101 arranged vertically, as shown in fig. 1 to 3.
In the bus box provided in this embodiment, the distances between the fuses 101 of different rows and the back plate 142 are different, so that the fuses 101 of each row are arranged in a staggered manner along the direction perpendicular to the back plate 142, and among any two fuses 101 of two rows arranged up and down, one fuse 101 of a row located below is far away from the linear space between the connecting terminal of the first end of the fuse 101 of a row located above and the corresponding threading hole 1411 along the direction perpendicular to the back plate 142, and the bus cables 201 connected with the fuses 101 of different rows are arranged by utilizing the space in the box 104 along the direction perpendicular to the back plate 142.
Further, in the above-described junction box, among the two rows of fuses 101 adjacent in the vertical direction, the upper row is located at a greater distance from the back plate 142.
Specifically, in each row of fuses 101, the threading holes 1411 corresponding to the fuses 101 are sequentially arranged into a threading hole row; the pitch of the fuses 101 in each row of fuses 101 is identical to the pitch of the threading holes 1411 in the corresponding threading hole row. The distance between each row of fuses 101 and the back plate 142 is the same as the distance between the row of threading holes corresponding to the row of fuses 101 and the back plate 142.
In each row of fuses 101, the fuses 101 are arranged one by one in the horizontal direction, or the fuses 101 are arranged one by one in the direction close to the horizontal direction (for example, the included angle between the fuses and the horizontal direction is 5 °, 10 ° or 15 °), which is not limited in this embodiment.
In each row of fuses 101, all fuses 101 are mounted on the same guide rail 106; a plurality of guide rails 106 arranged in the vertical direction are mounted to the back plate 142 through the same bracket 105; the bracket 105 includes a support plate bent in a stepped shape, and different guide rails 106 are fixed to different steps of the support plate from the back plate 142.
The bracket 105 may be provided to include one or more support plates; in addition, each guide rail 106 arranged along the vertical direction may be further configured to be mounted on the back plate 142 through different brackets 105, and only the brackets 105 corresponding to each guide rail 106 are required to be different in size, so that the distances between each row of fuses 101 arranged vertically and the back plate 142 are different, which is not limited in this embodiment.
The fuses 101 comprise a plurality of positive electrode fuses and a plurality of negative electrode fuses, wherein the positive electrode fuses are arranged in a plurality of rows, and the positive electrode fuses in each row are arranged on one side in the box 104 one by one along the vertical direction; the negative electrode fuses are arranged in a plurality of rows, and the negative electrode fuses of each row are arranged one by one in the vertical direction on the other side in the case 104, as shown in fig. 1.
The number of the positive and negative fuses may be set to be different from 16 to 24, respectively, according to the number of bus lines, and the embodiment is not particularly limited.
The wiring terminal of the second end of the fuse 101 is directly connected to the bus bar 103 or connected to the bus bar 103 through a bus copper wire; the bus bar 103 is connected to the isolating switch 102 in the case 104.
The copper busbar 103 is provided with the mounting hole 131, and the mounting hole 131 is convenient for the installation of copper line that converges is fixed, and the position, the size, the quantity of mounting hole 131 all can set up according to actual need, and this embodiment does not limit.
Specifically, the bus bar 201 employs 6 square aluminum wires, and the size of the threading hole 1411 in the bottom plate 141 is adapted to the size of the bus bar 201, so that implementation of the copper-aluminum transition scheme is facilitated. The copper-aluminum transition plug terminal 211 comprises an aluminum tip 2112 and a copper tip 2111 fixed at one end of the aluminum tip 2112, wherein a plug wire hole 2113 is provided at the other end of the aluminum tip 2112, and the end of the bus bar 201 is inserted into and fixed in the plug wire hole 2113.
The embodiment of the utility model also provides a photovoltaic power station, which comprises a photovoltaic module and a junction box, wherein the photovoltaic module is connected with the junction box through a junction cable 201; the bus bar 201 is an aluminum wire; the junction box is provided by the embodiment; one end of the bus bar 201 penetrates the box body 104 of the bus box and is connected with the connection terminal of the first end of the fuse 101 through the copper-aluminum transition plug terminal 211.
The connection terminal of the first end of the fuse 101 is provided as a crimp port, and the kind of the connection terminal is not limited in this embodiment.
The photovoltaic power station provided by this embodiment uses the collection flow box that above-mentioned embodiment provided, and the convenience is assembled to collection flow box with the bus cable 201 that photovoltaic module links to each other, and the installation construction degree of difficulty is little, does benefit to and shortens construction and later maintenance cycle. Of course, the photovoltaic power station provided in this embodiment also has other effects related to the junction box provided in the above embodiment, which are not described herein.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A combiner box, comprising:
the box body is provided with a plurality of threading holes on the bottom plate;
the number of the fuses is multiple, and the fuses are in one-to-one correspondence with the threading holes; the fuses are arranged in the box body, and the first ends of the fuses face the bottom plate respectively;
in the box body, a straight line space between the connecting terminal at the first end of the fuse and the corresponding threading hole is smooth.
2. The header box of claim 1, wherein the terminal of the first end of the fuse and the corresponding threading aperture are aligned in a vertical direction.
3. The junction box according to claim 2, wherein said fuses are mounted to a back plate of said box body and arranged in a plurality of rows in a direction parallel to said back plate; among the multiple rows of fuses vertically arranged, the distances between the fuses and the backboard are different in different rows.
4. A junction box according to claim 3, wherein, of the two rows of fuses adjacent in the vertical direction, an upper row is located at a greater distance from the back plate.
5. A combiner box according to claim 3, wherein in each row of said fuses, the corresponding threading Kong Yici of each fuse is arranged in a row of threading holes; the distance between the fuses in each row of fuses is consistent with the distance between the threading holes in the corresponding threading hole row.
6. A combiner box according to claim 3, wherein the fuses of each row are arranged one by one in a horizontal direction.
7. A combiner box according to claim 3, wherein in each row of said fuses, all fuses are mounted to the same rail; the guide rails arranged along the vertical direction are arranged on the back plate through the same bracket;
the support comprises support plates which are bent into a step shape, and different guide rails are fixed at different steps away from the backboard in the support plates.
8. The junction box according to claim 3, wherein the fuses include a plurality of positive-electrode fuses and a plurality of negative-electrode fuses, wherein the positive-electrode fuses are arranged in a plurality of rows, and the positive-electrode fuses of each row are arranged one by one in a vertical direction in the box body; the negative electrode fuses are arranged in a plurality of rows, and the negative electrode fuses in each row are arranged on the other side in the box body one by one along the vertical direction.
9. The combiner box according to claim 1, wherein the connection terminal of the second end of the fuse is connected directly or through a copper busbar, which is connected to a disconnector in the box.
10. The photovoltaic power station comprises a photovoltaic module and a junction box, wherein the photovoltaic module is connected with the junction box through a junction cable; the bus cable is an aluminum wire; the bus box is characterized in that the bus box is as claimed in any one of claims 1 to 9; one end of the bus cable penetrates into the box body of the bus box and is connected with the wiring terminal at the first end of the fuse through the copper-aluminum transition plug-in terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320331217.5U CN219420719U (en) | 2023-02-23 | 2023-02-23 | Combiner box and photovoltaic power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320331217.5U CN219420719U (en) | 2023-02-23 | 2023-02-23 | Combiner box and photovoltaic power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219420719U true CN219420719U (en) | 2023-07-25 |
Family
ID=87241816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320331217.5U Active CN219420719U (en) | 2023-02-23 | 2023-02-23 | Combiner box and photovoltaic power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219420719U (en) |
-
2023
- 2023-02-23 CN CN202320331217.5U patent/CN219420719U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201877756U (en) | Cable incoming unit for wind power generation | |
| CN219420719U (en) | Combiner box and photovoltaic power station | |
| CN201927619U (en) | Wiring box used for photovoltaic component | |
| CN101894874A (en) | Photovoltaic junction box | |
| CN216981865U (en) | Photovoltaic module convenient to arrange | |
| CN212412932U (en) | Wiring device in motor junction box | |
| CN108832572A (en) | A kind of compact bus bar trough connection device with interface with Rectangular Spring circle | |
| CN103390671A (en) | Heat-dissipation optimization type photovoltaic terminal box | |
| CN114650006A (en) | Photovoltaic module convenient to arrange | |
| CN212785257U (en) | Arrangement mode of photovoltaic modules | |
| CN208508453U (en) | A kind of compact bus bar trough connection device with interface with Rectangular Spring circle | |
| CN216216757U (en) | Split type wiring device | |
| CN205376957U (en) | Quick connecting row suitable for collection flow box | |
| CN216056929U (en) | Integrated wiring device | |
| CN213990598U (en) | Photovoltaic junction box and photovoltaic module | |
| CN220822557U (en) | High-voltage busbar structure of cable terminal | |
| CN203536450U (en) | Heat-dissipation optimized type photovoltaic terminal box | |
| CN216818487U (en) | Power line wiring assembly for battery cluster of lithium battery energy storage system | |
| CN203119802U (en) | Intelligent photovoltaic lightning-protection combiner box | |
| CN218040619U (en) | Protection mechanism for electron pencil | |
| CN216851588U (en) | Generator junction box with bidirectional outgoing lines | |
| CN214674191U (en) | Shockproof structure of wind turbine generator system fixing bus duct | |
| CN215119563U (en) | High-voltage power distribution cabinet for transformer substation | |
| CN214707645U (en) | Combiner box capable of insulating cable cores | |
| CN202602088U (en) | A contactor module, an inverter cabinet and a photovoltaic grid-connected inverting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |