CN204088904U - A kind of multi-functional photovoltaic exchanges header box - Google Patents
A kind of multi-functional photovoltaic exchanges header box Download PDFInfo
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- CN204088904U CN204088904U CN201420539536.6U CN201420539536U CN204088904U CN 204088904 U CN204088904 U CN 204088904U CN 201420539536 U CN201420539536 U CN 201420539536U CN 204088904 U CN204088904 U CN 204088904U
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- plastic casing
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- branch road
- fuse
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Abstract
A kind of multi-functional photovoltaic exchanges header box, belongs to solar energy power generating technical field of auxiliary equipment.Comprise housing, wiring board, branch road breaker of plastic casing, fuse, lightning arrester, binding post, ground connection breaker of plastic casing, bus-bar and fuse, described wiring board is arranged in housing by binding post, described branch road breaker of plastic casing has multiple, multiple branch road breaker of plastic casing arranges in the circuit board and is arranged in array, accessed one end of fuse by bus-bar after each branch road breaker of plastic casing is confluxed by bus-bar, the other end of fuse connects leading-out terminal, one end of described ground connection breaker of plastic casing connects lightning arrester, the other end is connected to bus-bar by connecting row, described branch road breaker of plastic casing and ground connection breaker of plastic casing are for exchanging breaker of plastic casing.Can adapt to conflux the operational environment of alternating current, and compact conformation, arrangement rationally, is convenient to safeguard.
Description
Technical field
The utility model belongs to solar energy power generating technical field of auxiliary equipment, is specifically related to a kind of multi-functional photovoltaic and exchanges header box.
Background technology
Along with the development of photovoltaic power generation technology, the particularly development of photovoltaic plant technology, photovoltaic power station power generation system schema alters a great deal.
The scheme of main flow was in the past: after some groups of photovoltaic tandem parallel connection access photovoltaic DC header boxs, then support the use with controller, DC power distribution cabinet, photovoltaic DC-to-AC converter, AC power distribution cabinet/AC distribution panel, thus form complete photovoltaic generating system, realize with civil power grid-connected.
Now along with the development of photovoltaic power generation technology, there is another kind of photovoltaic power station power generation system schema: be exactly that some groups of photovoltaic tandem parallel connections are directly accessed the small-sized inverter matched, direct current is converted to low-voltage AC by inverter, then access photovoltaic interchange header box to conflux, and after multiple interchange header box is concentrated the low-voltage cabinet in the change of access rear class case, boosted by transformer again, access electrical network by high-voltage board.
The maximum characteristics and advantages of above-mentioned first scheme is: first, eliminate photovoltaic DC header box, large-scale inversion room (being used for DC cabinet and large-scale inverter are installed), small-sized inverter is arranged in dispersion near photovoltaic module to install, the rated voltage of defeated AC480V.The benefit thereupon brought: save power plant construction total cost, simplied system structure, improves reliability and maintainability etc.Need not must allow the front stage power-off of whole inversion room, the instead single little inverter loop of Zhi Xu local excision when it is time for repair as in the past, thus greatly can reduce the loss of generating efficiency in maintenance process.Secondly, inverter as needs changes time, can accomplish to respond fast more efficient, simple to operate, with low cost.
Given this, for first scheme, need a kind of header box badly and to conflux alternating current, can meet the operational environment confluxing and exchange, technical scheme described below produces under this background.
Summary of the invention
The purpose of this utility model to provide a kind of multi-functional photovoltaic to exchange header box, and the operational environment of its alternating current that can adapt to conflux, and compact conformation, arrangement rationally, is convenient to safeguard.
The purpose of this utility model reaches like this, a kind of multi-functional photovoltaic exchanges header box, it is characterized in that: comprise housing, wiring board, branch road breaker of plastic casing, fuse, lightning arrester, binding post, ground connection breaker of plastic casing, bus-bar and fuse, described wiring board is arranged in housing by binding post, described branch road breaker of plastic casing has multiple, multiple branch road breaker of plastic casing arranges in the circuit board and is arranged in array, accessed one end of fuse by bus-bar after each branch road breaker of plastic casing is confluxed by bus-bar, the other end of fuse connects leading-out terminal, one end of described ground connection breaker of plastic casing connects lightning arrester, the other end is connected to bus-bar by connecting row, described branch road breaker of plastic casing and ground connection breaker of plastic casing are for exchanging breaker of plastic casing.
In a specific embodiment of the present utility model, described fuse is three-phase, corresponding to three-phase branch road.
In another specific embodiment of the present utility model, described housing is outside equipped with water joint in the below of short transverse court.
In another specific embodiment of the present utility model, multiple branch road breaker of plastic casing is that two row three arrange horizontally set in the circuit board.
The utility model owing to adopting after said structure, the beneficial effect had: the operational environment of the alternating current that can adapt to conflux, and compact conformation, arrangement is reasonable, is convenient to maintenance.
Accompanying drawing explanation
Fig. 1 is header box schematic internal view of the present utility model.
Fig. 2 is header box inner side schematic diagram of the present utility model.
In figure: 1. housing; 2. wiring board; 3. branch road breaker of plastic casing; 4. fuse; 5. lightning arrester; 6. binding post; 7. ground connection breaker of plastic casing; 8. bus-bar; 9. line bank; 100. water joint.
Embodiment
Technical spirit of the present utility model and beneficial effect can be fully understood in order to make the public; applicant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to the utility model design all should be considered as protection range of the present utility model.
Refer to Fig. 1, Fig. 2, the utility model relates to a kind of multi-functional photovoltaic and exchanges header box, is applicable to the alternating current that confluxes.It comprises housing 1, wiring board 2, branch road breaker of plastic casing 3, fuse 4, lightning arrester 5, binding post 6, ground connection breaker of plastic casing 7, bus-bar 8 and fuse 9.The material of described housing 1 is unrestricted, usually adopts sheet metal to process, has waterproof coating layer at the outer surface of housing.Described wiring board 2 is arranged on the inside of housing 1, as the mounting panel of other device, specifically wiring board 2 is arranged on the inner side of housing 1 die cavity by binding post 6, owing to have employed binding post 6, make wiring board 2 and housing 1 opposing insulation, ensure that photovoltaic exchanges the class of safety protection of header box.Usual wiring board 2 is rectangle, and binding post 6 has four, and four binding posts 6 are positioned on four angles of rectilinear line plate 2.
Described wiring board 2 is provided with branch road breaker of plastic casing 3, fuse 4, lightning arrester 5, ground connection breaker of plastic casing 7.
Described branch road breaker of plastic casing 3 is for exchanging breaker of plastic casing, and its quantity has multiple, and multiple branch road breaker of plastic casing 3 are arranged on the top of wiring board 2 short transverse, is arranged in array.Preferably, described array is that two row three are arranged and horizontally set, after adopting horizontally set, bus-bar 8 between each branch road breaker of plastic casing 3 adopts and in linely can complete task of confluxing, simultaneously horizontally set the layout adopting two row three to arrange effectively can save the installing space of described branch road breaker of plastic casing 3, and due to this kind of arrangement, line clear, easy access, replacing.The circuit of same phase is overlapped by bus-bar 8, thus is confluxed by the electric current of same phase.Concrete bus-bar 8 overlaps the same phase leading-out terminal of each branch road breaker of plastic casing 3, to realize confluxing.
Described fuse 4 is positioned at the below of each branch road breaker of plastic casing 3 short transverse.Be generally three, corresponding to the three-phase circuit after confluxing.
Described lightning arrester 5 is positioned at the side of fuse 4, is ground connection breaker of plastic casing 7 above it, and described lightning arrester 4 is similarly three, corresponding to three-phase current.Described ground connection breaker of plastic casing 7 is for exchanging breaker of plastic casing, and it is arranged in vertical on wiring board 2.
Be more than the layout scenarios of electric elements, set forth operation principle of the present utility model according to current path below:
In photovoltaic system, first the alternating current of each road after inverter inversion enter the end of incoming cables of branch road breaker of plastic casing 3, confluxed, access the input of fuse 4 after confluxing after branch road breaker of plastic casing 3 outlet by bus-bar 8.The leading-out terminal of the output access header box of fuse 4, for external cabling.
On bus-bar 8, one point of route connection row 9 flows into ground connection breaker of plastic casing 7, connect by another section the end of incoming cables that row 9 flows into lightning arrester 5 after flowing out ground connection breaker of plastic casing 7, if outlet is struck by lightning or is exceeded the surge generation of threshold values, then electric current enters earth terminal through the leading-out terminal of lightning arrester 5, thus enters the earth.
Exchange header box to make photovoltaic of the present utility model and there is more perfect function, adapt to actual operational environment.Described housing 1 is in the below of short transverse towards being outside equipped with water joint 100, and external cabling is electrically connected with the line terminal of header box inside by after water joint 100, can prevent rainwater from entering header box inside from this tapping.
Claims (4)
1. a multi-functional photovoltaic exchanges header box, it is characterized in that: comprise housing (1), wiring board (2), branch road breaker of plastic casing (3), fuse (4), lightning arrester (5), binding post (6), ground connection breaker of plastic casing (7), bus-bar (8) and fuse (9), described wiring board (2) is arranged in housing (1) by binding post (6), described branch road breaker of plastic casing (3) has multiple, multiple branch road breaker of plastic casing (3) is arranged on wiring board (2) and goes up and be arranged in array, each branch road breaker of plastic casing (3) confluxed by bus-bar (8) after by bus-bar (8) access fuse (4) one end, the other end of fuse (4) connects leading-out terminal, one end of described ground connection breaker of plastic casing (7) connects lightning arrester (5), the other end is connected to bus-bar (8) by connecting row (9), described branch road breaker of plastic casing (3) and ground connection breaker of plastic casing (7) are for exchanging breaker of plastic casing.
2. the multi-functional photovoltaic of one according to claim 1 exchanges header box, it is characterized in that described fuse (4) is three-phase, corresponding to three-phase branch road.
3. the multi-functional photovoltaic of one according to claim 1 exchanges header box, it is characterized in that described housing (1) in the below of short transverse towards being outside equipped with water joint (100).
4. the multi-functional photovoltaic of one according to claim 1 exchanges header box, it is characterized in that multiple branch road breaker of plastic casing (3) is horizontally installed on wiring board (2) in two row three rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539536.6U CN204088904U (en) | 2014-09-19 | 2014-09-19 | A kind of multi-functional photovoltaic exchanges header box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539536.6U CN204088904U (en) | 2014-09-19 | 2014-09-19 | A kind of multi-functional photovoltaic exchanges header box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204088904U true CN204088904U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539536.6U Active CN204088904U (en) | 2014-09-19 | 2014-09-19 | A kind of multi-functional photovoltaic exchanges header box |
Country Status (1)
| Country | Link |
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| CN (1) | CN204088904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953946A (en) * | 2015-06-12 | 2015-09-30 | 内蒙古电力勘测设计院有限责任公司 | Alternating-current header box adopting carrier communication and photovoltaic power station |
| CN105071439A (en) * | 2015-08-14 | 2015-11-18 | 国家电网公司 | Photovoltaic inversion single-phase AC grid-connected box |
-
2014
- 2014-09-19 CN CN201420539536.6U patent/CN204088904U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953946A (en) * | 2015-06-12 | 2015-09-30 | 内蒙古电力勘测设计院有限责任公司 | Alternating-current header box adopting carrier communication and photovoltaic power station |
| CN105071439A (en) * | 2015-08-14 | 2015-11-18 | 国家电网公司 | Photovoltaic inversion single-phase AC grid-connected box |
| CN105071439B (en) * | 2015-08-14 | 2017-08-15 | 国家电网公司 | Photovoltaic inversion single phase ac grid connection box |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |