CN112736694A - High-low voltage switch cabinet convenient to install - Google Patents
High-low voltage switch cabinet convenient to install Download PDFInfo
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- CN112736694A CN112736694A CN202110062945.6A CN202110062945A CN112736694A CN 112736694 A CN112736694 A CN 112736694A CN 202110062945 A CN202110062945 A CN 202110062945A CN 112736694 A CN112736694 A CN 112736694A
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- butt
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- 210000001503 joint Anatomy 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 6
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/306—Accessories, e.g. windows
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/32—Mounting of devices therein
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Abstract
The invention discloses a high-low voltage switch cabinet convenient to install, which relates to the technical field of switch cabinets and adopts the technical scheme that the switch cabinet comprises a switch cabinet body, wherein the switch cabinet body is provided with a left side door pair and a right side door pair, the left side of the left side door pair is rotationally connected with the switch cabinet body, the right side of the right side door pair is rotationally connected with the switch cabinet body, and a middle connecting column which is used for being in matched connection with the right side of the left side door pair and the left side of the right side door pair is arranged between the left side door pair and the right side door pair; and the middle connecting column is provided with a plurality of connecting pieces which are respectively used for being connected with the left side door aligning and the right side door aligning in a matching way. The left side door butt and the right side door butt are connected through the connecting piece, so that the left side door butt, the right side door butt and the middle connecting column of the switch cabinet body form a stable connecting structure when being closed, and the switch cabinet has the effects of being simple to use and remarkably reducing the difficulty in maintenance of electrical equipment elements in a conveniently-installed high-low voltage switch cabinet.
Description
Technical Field
The invention relates to the technical field of switch cabinets, in particular to a high-low voltage switch cabinet convenient to install.
Background
The switch cabinet is an electrical device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment. The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of power generation, power transmission, power distribution and electric energy conversion of an electric power system. The components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like.
Chinese patent with publication number CN212162382U discloses a high tension switchgear with install base fast, this high tension switchgear with install base fast includes mounting panel and the cabinet body, the equal fixedly connected with supporting seat in bottom outer wall four corners of mounting panel, and the same backup pad of the relative one side outer wall fixedly connected with of four supporting seats, No. two fixed cylinders of top outer wall equidistance fixedly connected with of backup pad, and the inner wall of every No. two fixed cylinders all pegs graft and have the fixed column, No. one fixed cylinder of bottom outer wall equidistance fixedly connected with of the cabinet body, and every fixed column pegs graft in the inner wall of corresponding fixed cylinder.
However, only one cabinet door is arranged on the cabinet body of the high-voltage switch cabinet with the quick installation base, and then the internal electrical elements of the cabinet can be maintained only through opening and closing of the cabinet door, so that the internal electrical elements of the cabinet are difficult to maintain and are to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a conveniently-installed high-low voltage switch cabinet, which has the effect of remarkably reducing the difficulty in maintaining and repairing electrical components.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-low voltage switch cabinet convenient to mount comprises a switch cabinet body, wherein the switch cabinet body is provided with a left side door alignment and a right side door alignment, the left side of the left side door alignment is rotatably connected with the switch cabinet body, the right side of the right side door alignment is rotatably connected with the switch cabinet body, and a middle connecting column which is used for being connected with the right side of the left side door alignment and the left side of the right side door alignment in a matching manner is arranged between the left side door alignment and the right side door alignment; and the middle connecting column is provided with a plurality of connecting pieces which are respectively used for being connected with the left side door aligning and the right side door aligning in a matching way.
Through adopting above-mentioned technical scheme, this high-low voltage switch cabinet of convenient installation is provided with the left side that is used for opening the cubical switchboard body and right side to the door, and wherein the left side is to the door and the right side is to the door can open simultaneously or singly open, connects the left side to the door and the right side is to the door through the connecting piece in addition for the left side is to the door and the right side to the middle column that links of the door and the cubical switchboard body forms stable connection structure when closed, has simple to use and is showing the effect that reduces the maintenance degree of difficulty of electrical components.
The invention is further configured to: the connecting piece is magnet and absorption iron plate to fix respectively the middle even post is with corresponding on left side is to the door and the right side is to the door.
Through adopting above-mentioned technical scheme, even the post or the left side is to door and right side to the door with magnet is fixed in the middle, will adsorb the iron plate again and fix in the left side to door and right side to door or middle even the post to it is fixed with left side to being connected of door and right side to the door to link the post in the middle of realizing through simple structure's magnet and the connection structure combination that adsorbs the iron plate, make this convenient high-low voltage switch cabinet of installation have simple structure and inside electrical components maintenance effect that the degree of difficulty is low.
The invention is further configured to: the middle column is connected with a switching column connected with the switch cabinet body in an inserting mode, a left arc-shaped abutting portion is arranged on the left side of the door, a right arc-shaped abutting portion is arranged on the right side of the door, and the middle column is provided with a left arc-shaped face matched with the left arc-shaped abutting portion and a right arc-shaped face matched with the right arc-shaped abutting portion.
Through adopting above-mentioned technical scheme, even post and left side are to door and right side are to door connection structure stability in the middle of promoting for this cubical switchboard body has the effect that easy to use and inside electrical components maintenance degree of difficulty are low.
The invention is further configured to: the switch cabinet is internally provided with an elastic abutting part, and two ends of the elastic abutting part are respectively used for abutting against the left door and the right door and limiting the left door and the right door to rotate in the switch cabinet.
By adopting the technical scheme, the influence on the normal operation of internal electrical components caused by overlarge rotation amplitude of the left side pair door and the right side pair door in the switch cabinet body is effectively avoided.
The invention is further configured to: the switching post with the centre is even the post is connected fixedly, the switching post is provided with and the cubical switchboard body butt to the restriction the centre links post pivoted torsional spring.
Through adopting above-mentioned technical scheme, the torsional spring will promote the structural stability of middle even post, even post rotation back in the middle of, the torsional spring produces elastic restoring force to even the power on the post is absorbed or is reduced the back in the middle, resumes the normal position, and then reaches the purpose that promotes this cubical switchboard body result of use.
The invention is further configured to: the inner side of the middle connecting column is provided with an inner side arc-shaped surface matched with the middle part of the elastic abutting part, and when the middle connecting column is in the original position and the left side door butt and the right side door butt are connected with the middle connecting column, gaps are formed between the two ends of the elastic abutting part and the corresponding left side door butt and right side door butt; the outer side of the middle connecting column is provided with a left limiting strip matched with the left door butt and a right limiting strip matched with the right door butt; two ends of the elastic abutting connection piece respectively have suction to the left door and the right door; when the left side door is opened, the right side door is abutted with the elastic abutting part, the middle connecting column rotates towards the right side door, and the right side limiting strip is abutted with the right side door; when the right side is opened to the door, the left side is to door and elasticity butt joint piece butt, the middle even post to the left side is to the door rotation, the spacing of left side with the left side is to the door butt joint.
By adopting the technical scheme, when the left side door butt joint or the right side door butt joint on the switch cabinet body needs to be opened, when the left side door butt joint is opened, the right side door butt joint is abutted against the elastic abutting part, and then after the middle connecting column rotates towards the right side door butt joint, the right side limiting strip is abutted against the right side door butt joint, so that the aim of preventing the right side door butt joint from being abnormally opened to influence the operation safety of maintenance personnel is fulfilled; when the right side is opened, the left side is abutted against the door and the elastic abutting part is abutted against the door, and then after the middle connecting column rotates towards the left side, the left side limiting strip is abutted against the left side, so that the purpose of preventing the left side from being abnormally opened towards the door and influencing the operation safety of maintenance personnel is achieved.
In conclusion, the invention has the following beneficial effects: the left side door and the right side door can be opened and closed simultaneously or independently by arranging the left side door and the right side door on the switch cabinet body, and when the corresponding high-low voltage switch cabinet is maintained, the left side door and the right side door are opened simultaneously or the left side door or the right side door is opened independently through the selection, so that the conveniently-installed high-low voltage switch cabinet body can be maintained; meanwhile, when the left side is opened or the right side is opened alone, the corresponding right side is locked safely to the door or the left side is locked safely to the door, and the purpose of improving the life and property safety of maintenance personnel is achieved.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a schematic view of an exploded structure of the present embodiment;
fig. 3 is an enlarged schematic view of a portion a of fig. 2.
Description of reference numerals: 1. a switch cabinet body; 2. the left side is opposite to the door; 21. a left arcuate abutment; 3. the right side is opposite to the door; 31. a right arcuate abutment; 4. connecting the middle column; 41. a left side limiting strip; 42. a right side limiting strip; 43. an inner arc-shaped surface; 44. a left arc-shaped face; 45. a right arc face; 5. a transfer column; 6. a torsion spring; 7. an elastic abutting part.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in figure 1, a high-low voltage switch cabinet convenient to install comprises a switch cabinet body 1, wherein the switch cabinet body 1 is provided with a left side door pair 2 and a right side door pair 3. The left side is to the left side of door 2 and the cubical switchboard body 1 rotates to be connected, and the right side is to the right side of door 3 and the cubical switchboard body 1 rotates to be connected, and the left side is to being provided with between door 2 and the right side of door 3 and being used for with the left side to the right side of door 2 and the right side to the left side of door 3 the middle even post 4 of left side accordant connection. Therefore, the left side door pair 2 and the right side door pair 3 of the embodiment of the invention can be opened independently or opened and closed simultaneously, so as to be matched with maintenance personnel to maintain and maintain the corresponding electrical components in the switch cabinet body 1. Meanwhile, a plurality of connecting pieces which are respectively used for being matched and connected with the left side door pair 2 and the right side door pair 3 are arranged on the middle connecting column 4. Therefore, the left side is connected with the right side door pair 2 and the right side door pair 3 through the connecting piece, so that the left side door pair 2, the right side door pair 3 and the middle connecting column 4 of the switch cabinet body 1 form a stable connecting structure when being closed, and the switch cabinet has the effects of being simple to use and obviously reducing the difficulty in maintenance of electrical elements. It should be noted that the connecting members are magnets and adsorption iron blocks, and are respectively fixed on the middle connecting column 4 and the corresponding left side door pair 2 and right side door pair 3. Consequently, through fixing magnet in the middle of even post 4 or the left side to door 2 and right side to door 3 on, will adsorb the iron plate again and fix in the left side to door 2 and right side to door 3 or the middle magnet on even post 4 and the effect of being connected the structure combination utensil simple structure that adsorbs the iron plate, and then in order to realize through simple structure that middle even post 4 is fixed with the left side to door 2 and right side to being connected of door 3 for this convenient high-low voltage switchgear of installation has simple structure and the effect that the inside electrical components maintenance degree of difficulty is low.
As shown in fig. 2 and 3, the intermediate connecting column 4 is inserted with an adapter column 5 connected with the switch cabinet 1. The left side is provided with left arc butt portion 21 to door 2, the right side is provided with right arc butt portion 31 to door 3, and middle even post 4 is provided with respectively with left arc butt portion 21 assorted left side arcwall face 44 and with right arc butt portion 31 assorted right side arcwall face 45, and then will be when right arc butt portion 31 and right side arcwall face 45 accordant connection and/or left arc butt portion 21 and left side arcwall face 44 accordant connection, the realization is showing in the middle of promoting even post 4 and left side to door 2 and the effect that the right side is to door 3 connection structure stability, make this cubical switchboard body 1 have easy to use and the low effect of the inside electrical components maintenance degree of difficulty.
It is to be mentioned that a resilient abutment 7 is provided within the switchgear body 1. The both ends of elasticity butt piece 7 are used for respectively with the left side to door 2 and the right side to 3 butts to the restriction left side is to door 2 and the right side to door 3 to the internal rotation of cubical switchboard 1, and then will effectively avoid influencing the normal operating of inside electrical components because of the left side is too big to door 2 and the right side to door 3 to the internal rotation range of cubical switchboard 1. Wherein: the switching post 5 is connected fixedly with middle even post 4, and switching post 5 is provided with and 1 butt of cubical switchboard body to even post 4 pivoted torsional spring 6 in the middle of the restriction. The torsional spring 6 is used for prescribing a limit to the rotation of middle even post 4 within the range, and has the ability of restoring the normal position to reach the purpose that promotes the structural stability of middle even post 4, when middle even post 4 rotates, torsional spring 6 produces elastic restoring force, with the power on middle even post 4 is absorbed or is reduced the back, resumes the normal position, and then reaches the purpose that promotes this cubical switchboard body 1 result of use.
It should be noted that an inner arc-shaped surface 43 matched with the middle part of the elastic abutting part 7 is arranged on the inner side of the middle connecting column 4, and when the middle connecting column 4 is in the original position and the left door pair 2 and the right door pair 3 are connected with the middle connecting column 4, gaps are formed between the two ends of the elastic abutting part 7 and the corresponding left door pair 2 and right door pair 3; and the outer side of the middle connecting column 4 is provided with a left limiting strip 41 matched with the left door-to-door 2 and a right limiting strip 42 matched with the right door-to-door 3. Two ends of the elastic abutting part 7 respectively have suction to the left door pair 2 and the right door pair 3; when the left side door pair 2 is opened, the right side door pair 3 is abutted to the elastic abutting part 7, the middle connecting column 4 rotates towards the right side door pair 3, and the right side limiting strip 42 is abutted to the right side door pair 3; when the right side is opened to door 3, the left side is to door 2 and elasticity butt piece 7 butt, and middle even post 4 rotates to the left side to door 2, and the spacing strip 41 in left side is to door 2 butt with the left side. Therefore, when the left side opposite door 2 or the right side opposite door 3 on the switch cabinet body 1 needs to be opened, when the left side opposite door 2 is opened, the right side opposite door 3 is abutted against the elastic abutting piece 7, and then after the middle connecting column 4 rotates towards the right side opposite door 3, the right side limiting strip 42 is abutted against the right side opposite door 3, so that the aim of preventing the right side opposite door 3 from being abnormally opened to influence the operation safety of maintenance personnel is fulfilled; when the right side is opened to the door 3, the left side is abutted to the door 2 and the elastic abutting part 7, and then after the middle connecting column 4 rotates to the left side to the door 2, the left side limiting strip 41 is abutted to the left side to the door 2, so that the purpose of preventing the left side from abnormally opening the door 2 and influencing the operation safety of maintenance personnel is achieved.
In summary, the left side door pair 2 and the right side door pair 3 are arranged on the switch cabinet body 1, so that the left side door pair 2 and the right side door pair 3 can be opened and closed simultaneously or independently, and when a corresponding high-low voltage switch cabinet is maintained, through the selection, the left side door pair 2 and the right side door pair 3 are opened simultaneously, or the left side door pair 2 or the right side door pair 3 is opened independently, so that the conveniently-installed high-low voltage switch cabinet body 1 can be maintained; meanwhile, when the left side is opened alone to door 2 or the right side is to door 3, corresponding right side is to door 3 or the left side is to door 2 by safe locking, reaches the purpose that promotes maintenance personnel life and property safety.
References in this application to "first," "second," "third," "fourth," etc., if any, are intended to distinguish between similar elements and not necessarily to describe a particular order or sequence. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, or apparatus.
It should be noted that the descriptions in this application referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
The principle and the implementation of the present application are explained herein by applying specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. The utility model provides a high-low voltage switch cabinet of convenient installation, includes the cubical switchboard body (1), its characterized in that: the switch cabinet body (1) is provided with a left side door-to-door (2) and a right side door-to-door (3), the left side of the left side door-to-door (2) is rotatably connected with the switch cabinet body (1), the right side of the right side door-to-door (3) is rotatably connected with the switch cabinet body (1), and a middle connecting column (4) which is used for being connected with the right side of the left side door-to-door (2) and the left side of the right side door-to-door (3) in a matching manner is arranged between the left side door-to-door (2) and the right side door; the middle connecting column (4) is provided with a plurality of connecting pieces which are respectively used for being connected with the left side door butt joint (2) and the right side door butt joint (3) in a matching mode.
2. A high-low voltage switchgear cabinet convenient to install according to claim 1, characterized in that: the connecting piece is magnet and absorption iron plate, and fix respectively the centre is even post (4) and corresponding on left side is to door (2) and right side is to door (3).
3. A high-low voltage switchgear cabinet convenient to install according to claim 2, characterized in that: the middle column (4) is spliced with a switching column (5) connected with the switch cabinet body (1), the left side is provided with a left arc-shaped abutting part (21) for the door (2), the right side is provided with a right arc-shaped abutting part (31) for the door (3), and the middle column (4) is provided with a left side arc-shaped surface (44) matched with the left arc-shaped abutting part (21) and a right side arc-shaped surface (45) matched with the right arc-shaped abutting part (31).
4. A high-low voltage switchgear cabinet convenient to install according to claim 3, characterized in that: be provided with elasticity butt piece (7) in the cubical switchboard body (1), the both ends of elasticity butt piece (7) be used for respectively with the left side to door (2) and right side to door (3) butt, and the restriction the left side to door (2) and right side to door (3) to the cubical switchboard body (1) internal rotation.
5. A high-low voltage cubical switchboard of convenient installation according to claim 4 characterized in that: the switching post (5) with the middle is even the post (4) and is connected fixedly, switching post (5) are provided with the cubical switchboard body (1) butt, and restrict middle even post (4) pivoted torsional spring (6).
6. A high-low voltage cubical switchboard of convenient installation according to claim 5 characterized in that: the inner side of the middle connecting column (4) is provided with an inner side arc-shaped surface (43) matched with the middle part of the elastic abutting part (7).
7. A high-low voltage cubical switchboard of convenient installation according to claim 6 characterized in that: when the middle connecting column (4) is in the original position, the left side door butt joint (2) and the right side door butt joint (3) are connected with the middle connecting column (4), gaps are formed between the two ends of the elastic abutting part (7) and the corresponding left side door butt joint (2) and the right side door butt joint (3).
8. A high and low voltage switchgear cabinet for convenient installation according to claim 7, wherein: the outer side of the middle connecting column (4) is provided with a left limiting strip (41) matched with the left door butt (2) and a right limiting strip (42) matched with the right door butt (3); two ends of the elastic abutting part (7) respectively have suction to the left door (2) and the right door (3); when the left side door butt joint (2) is opened, the right side door butt joint (3) is abutted against the elastic abutting part (7), the middle connecting column (4) rotates towards the right side door butt joint (3), and the right side limiting strip (42) is abutted against the right side door butt joint (3); when the right side is opened to door (3), the left side is to door (2) and elasticity butt piece (7) butt, middle even post (4) to the left side is to door (2) rotation, left side spacing (41) with the left side is to door (2) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062945.6A CN112736694B (en) | 2021-01-18 | 2021-01-18 | High-low voltage switch cabinet convenient to install |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110062945.6A CN112736694B (en) | 2021-01-18 | 2021-01-18 | High-low voltage switch cabinet convenient to install |
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| CN112736694A true CN112736694A (en) | 2021-04-30 |
| CN112736694B CN112736694B (en) | 2024-04-23 |
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| CN210669208U (en) * | 2019-09-12 | 2020-06-02 | 雷朋电气集团有限公司 | Switch cabinet convenient to overhaul |
| CN210838523U (en) * | 2019-12-02 | 2020-06-23 | 镇江市欧菱电气自动化系统设备有限公司 | Fire pump switch board convenient to overhaul |
| CN111509589A (en) * | 2020-03-13 | 2020-08-07 | 浙江城电电气有限公司 | High-voltage switch equipment |
| CN211929976U (en) * | 2020-05-25 | 2020-11-13 | 安徽中申电力科技有限公司 | Photovoltaic inverter cabinet |
| CN212210108U (en) * | 2020-06-18 | 2020-12-22 | 深圳市奥斯特电气技术有限公司 | Insulating protection type high tension switchgear case |
| CN112234457A (en) * | 2020-10-26 | 2021-01-15 | 滁州市朝友精密制造有限公司 | Low-voltage power distribution cabinet |
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| CN112736694B (en) | 2024-04-23 |
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Application publication date: 20210430 Assignee: Ningbo Gongsheng Energy Technology Co.,Ltd. Assignor: Ningbo Gongsheng Electric Technology Co.,Ltd. Contract record no.: X2024980019223 Denomination of invention: A convenient high and low voltage switchgear for installation Granted publication date: 20240423 License type: Common License Record date: 20241018 |
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Application publication date: 20210430 Assignee: Zhejiang Gongsheng Electric Power Equipment Co.,Ltd. Assignor: Ningbo Gongsheng Electric Technology Co.,Ltd. Contract record no.: X2024980021262 Denomination of invention: A convenient high and low voltage switchgear for installation Granted publication date: 20240423 License type: Common License Record date: 20241031 |