CN203645554U - Solar photovoltaic power generation system and inverter thereof - Google Patents

Solar photovoltaic power generation system and inverter thereof Download PDF

Info

Publication number
CN203645554U
CN203645554U CN201320751066.5U CN201320751066U CN203645554U CN 203645554 U CN203645554 U CN 203645554U CN 201320751066 U CN201320751066 U CN 201320751066U CN 203645554 U CN203645554 U CN 203645554U
Authority
CN
China
Prior art keywords
inverter
connector
casing
cabinet
casings
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.)
Expired - Lifetime
Application number
CN201320751066.5U
Other languages
Chinese (zh)
Inventor
陶高周
李永红
胡孔红
蔡曲娥
王家明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sungrow Power Supply Co Ltd
Original Assignee
Sungrow Power Supply Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sungrow Power Supply Co Ltd filed Critical Sungrow Power Supply Co Ltd
Priority to CN201320751066.5U priority Critical patent/CN203645554U/en
Application granted granted Critical
Publication of CN203645554U publication Critical patent/CN203645554U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers

Landscapes

  • Casings For Electric Apparatus (AREA)

Abstract

The utility model discloses a solar photovoltaic power generation system and an inverter thereof. The inverter comprises at least two cabinets, and/or at least one group of first fastening mechanisms, and/or at least one group of second fastening mechanisms. Each cabinet comprises a cabinet body and a cabinet cover. The opposite outer walls of two adjacent cabinet bodies cling to each other. Each first fastening mechanism comprises a first fastening member and two first connecting members. The two first connecting members are respectively and fixedly connected with the outer surface of each of the two cabinets and are detachably connected together through the first fastening member. Each second fastening mechanism comprises a second fastening member and a second connecting member. A groove is disposed on the outer surface of one of the two cabinets. The second connecting member is fixedly connected with the groove and is detachably connected with the other cabinet through the second fastening member. Compared with a product in the prior art, the inverter has the two cabinet bodies connected through the fastening mechanisms with the above structure. Therefore, an installing and uninstalling tool is prevented from contacting an electronic functional element. Thus, installing and uninstalling efficiency is obviously improved and installing and uninstalling difficulty is obviously lowered.

Description

A kind of solar photovoltaic generation system and inverter thereof
Technical field
The utility model relates to inverter technology field, particularly a kind of solar photovoltaic generation system and inverter thereof.
Background technology
The power adjusting device that inverter is made up of semiconductor device, is mainly used in converting direct-current power into alternating-current power.The cabinet of inverter comprises mainframe box and header box, mainframe box and header box are respectively arranged with suitable male and female binding post, in installation process by public, binding post to inserting to realize the electrical connection of respective electric function element in two casings, and then by bolt assembly, mainframe box is fixedly connected with header box.
The inverter of said structure, 2 deficiencies below existing in practical set and maintenance process:
1, the threaded mounting hole coordinating with bolt assembly, be opened in respectively mainframe box and header box opposing sidewalls on, the disassembly process of bolt assembly all need be carried out in casing, and after mounting electrical function element, in casing, can be not easy to operation for the narrow space of assembling-disassembling bolt assembly, have large, the inefficient problem of dismounting difficulty.
2, in addition, mainframe box and header box are realized electrical connection by suitable male and female binding post, in practical set process, first need after the port adjustment alignment of male and female binding post, can to peg graft, and it is comparatively consuming time to adjust port this process of aliging, thereby further increase assembly difficulty, reduced efficiency of assembling.In addition, male and female binding post is expensive, makes the integral manufacturing cost of inverter high.
In view of this, those skilled in the art urgently provide a kind of inverter, to solve two problems that cabinet disassembly process difficulty is large, efficiency is low and manufacturing cost is high in existing inverter.
Utility model content
For above-mentioned defect, core object of the present utility model is, a kind of inverter is provided, to solve the problem that in existing inverter, cabinet disassembly process difficulty is large, efficiency is low and manufacturing cost is high.On this basis, the utility model also provides a kind of solar photovoltaic generation system that comprises above-mentioned inverter.
A kind of inverter provided by the utility model, comprise at least two cabinets, each described cabinet comprises the casing and the case lid that removably connect, the relative lateral wall of adjacent two described casings fits, also comprise at least one group of retention mechanism and/or at least one group of the second retention mechanism, described the first retention mechanism comprises the first securing member and two the first connectors, and two described the first connectors are fixed on respectively the outer surface of two described casings, and removably connects by described the first securing member.
Described the second retention mechanism comprises the second securing member and the second connector, and in two described casings, the outer surface of one has groove, and described the second connector is fixedly connected in described groove, and by described the second securing member and described in another casing removably connect.
Preferably, each described the first connector be shaped as " L " font, described the first connector is fixedly connected on corresponding described casing by a side arm, another side arm has the installing hole suitable with described the first securing member.
Preferably, described the first connector also comprises at least one reinforcement, and described reinforcement is fixedly connected with the two side of described the first connector respectively.
Preferably, described casing has an openend, and described case lid is covered on described openend and removably connects with described casing, and described the first connector is connected in described openend, described case lid has the space of accommodating described the first connector, and described groove is located at the lateral wall of corresponding described casing.
Preferably, be installed on respectively two electric function elements in described casing and be electrically connected by cable, relatively described sidewall all has the opening passing for described cable.
Preferably, in two described cabinets, one is placed in the top of another one, and lower box has periphery wall, and upper box has internal perisporium, and described internal perisporium is set on described periphery wall; Described periphery wall is extended to form to described lower box outside by the edge of corresponding described opening, and described internal perisporium is extended to form to the inside of described upper box by the edge of corresponding described opening.
Preferably, the outer surface of described periphery wall is guiding surface, and to lead, described internal perisporium is set on described periphery wall.
Preferably, also comprise seal member, described seal member is between two described casings, and described seal member has the through hole passing for described cable.
Preferably, in two described casings, one is placed in the top of another one, and described groove is located at lower box.
Inverter provided by the utility model, comprise at least two cabinets, each cabinet comprises the casing and the case lid that removably connect, the relative lateral wall of adjacent two casings fits, also comprise at least one group of retention mechanism and/or at least one group of the second retention mechanism, the first retention mechanism comprises the first securing member and two the first connectors, and two described the first connectors are fixed on respectively the outer surface of two described casings, and removably connects by described the first securing member; Described the second retention mechanism comprises the second securing member and the second connector, and in two described casings, the outer surface of one has groove, and described the second connector is fixedly connected in described groove, and by described the second securing member and described in another casing removably connect.
Compared with prior art, the first retention mechanism and the second retention mechanism that in this programme, connect two casings are all positioned at casing outside, in dismounting cabinet process, avoided and the interference problem of box house electric function element, therefore dismounting efficiency is significantly improved, dismounting difficulty obviously reduces.In addition, the second retention mechanism is hidden in the groove of casing, avoided retention mechanism to protrude from the lofty sense of cabinet outer surface, thereby can improve the aesthetics of inverter profile.
In a preferred version of the present utility model, above-mentioned cabinet comprises casing and case lid, and casing has an openend, and case lid is covered on described openend and removably connects with cabinet, and the first connector is connected in openend, and case lid has the space of accommodating the first connector.In assembling process, first will connect two casings by retention mechanism, then case lid is covered and is connected on casing.
Obviously, this programme, by the space offer accommodating the first connector on case lid, hides in case lid retention mechanism, has avoided retention mechanism to protrude from the lofty sense of cabinet outer surface, thereby can improve the aesthetics of inverter profile.
In another preferred version of the present utility model, be installed on respectively two electric function elements in casing and be electrically connected by cable, in the opposing sidewalls of two casings, all there is the opening passing for cable.
This programme connects two casings by the retention mechanism of said structure, and offer hatch frame on two casings, make to be electrically connected inverter circuit module and heating function element cable is passed by this opening, save male and female binding post of the prior art, thereby not only reduce the manufacturing cost of inverter, and avoided the alignment issues in assembling process, further improve dismounting efficiency.
The utility model also provides a kind of solar photovoltaic generation system, comprise solar photovoltaic assembly, terminal box and inverter, wherein, terminal box is installed on the backboard of solar photovoltaic assembly, the electric signal input end of inverter is connected with the electrical signal of terminal box, and inverter is the inverter of structure as detailed above.
Because above-mentioned inverter has technique effect as above, therefore, comprise that the solar photovoltaic generation system of this inverter also should have identical technique effect, do not repeat them here.
Brief description of the drawings
Fig. 1 shows the structural representation of inverter provided by the utility model;
Fig. 2 shows the local enlarged diagram in A place of Fig. 1;
Fig. 3 shows the structural representation of inverter shown in Fig. 1 (not containing case lid);
Fig. 4 shows the structural representation of the cabinet (not containing case lid) of inverter shown in Fig. 1;
Fig. 5 shows the local enlarged diagram in B place in Fig. 4;
Fig. 6 shows the decomposition texture schematic diagram of cabinet described in Fig. 4;
Fig. 7 shows the perspective view of upper box shown in Fig. 4;
Fig. 8 shows the perspective view of lower box shown in Fig. 4;
Fig. 9 shows the main TV structure schematic diagram of two dimension of lower box shown in Fig. 8;
Figure 10 shows the right TV structure schematic diagram of lower box shown in Fig. 9.
Corresponding relation in Fig. 1 to Fig. 6 between Reference numeral and all parts title:
11 upper boxes, 111 upper sheds, 112 internal perisporiums, 12 upper box lids, 13 lower boxes, 131 under sheds, 132 periphery walls, 133 grooves, 14 times case lids, 2 first connectors, 21 installing holes, 22 reinforcements, 3 first bolt assemblies, 4 second connectors, 5 second bolt assemblies, 6 inverter circuit modules, 7 heating function elements, 8 cables, 9 seal members, 91 through holes.
Embodiment
Core of the present utility model is, a kind of inverter is provided, by being arranged at the retention mechanism of cabinet outside two cabinets that removably connect, avoided in disassembly process with cabinet in the touching problem of electronic devices and components, thereby improved dismounting efficiency, reduced dismounting difficulty.On this basis, the utility model also provides a kind of solar photovoltaic generation system that comprises above-mentioned inverter.
The concrete structure schematic diagram of inverter provided by the utility model is described now by reference to the accompanying drawings.It should be noted that, herein the related noun of locality " on ", D score sets taking Figure of description as benchmark, therefore the appearance of the above-mentioned noun of locality does not limit protection range of the present utility model.
Refer to Fig. 1 to Fig. 5, wherein, Fig. 1 shows the structural representation of inverter provided by the utility model, Fig. 2 shows the local enlarged diagram in A place of Fig. 1, Fig. 3 shows the structural representation of inverter shown in Fig. 1 (not containing case lid), Fig. 4 shows the structural representation of the cabinet (not containing case lid) of inverter shown in Fig. 1, and Fig. 5 shows the local enlarged diagram in B place in Fig. 4.
As shown in Figure 4, the inverter providing in this programme comprises two cabinets, and in two cabinets, one is placed in the top of another one, for convenience of explanation, with upper case and lower case, two cabinets is distinguished herein.Upper case and lower case include the casing and the case lid that removably connect, and the relative lateral wall of upper box 11 and lower box 13 fits, and also comprise two group of first retention mechanism and two group of second retention mechanism.
Wherein, the first retention mechanism comprises that two the first connectors 2 and 3, two the first connectors 2 of the first bolt assembly lay respectively at the outer surface of upper box 11 and lower box 13, and removably connects by the first bolt assembly 3; The first connector 2 be shaped as " L " font, one side arm is welded to connect on corresponding casing, another side arm is stretched and is had the installing hole 21 suitable with the first bolt assembly 3.
The second retention mechanism comprises the second securing member 5 and the second connector 4, the outer surface of lower box 13 has the groove 133 of vertically offering, the upper open end of groove 133 is fixedly connected with horizontally disposed the second connecting plate 4, the second connecting plates 4 and is connected by the second bolt assembly 5 with upper box 11.For the ease of understanding the concrete structure of cabinet, please also refer to Fig. 5 and Fig. 6, wherein, Fig. 6 shows the decomposition texture schematic diagram of cabinet described in Fig. 4.
Compared with prior art, the first retention mechanism and the second retention mechanism that in this programme, connect two casings are all positioned at casing outside, in dismounting cabinet process, avoided and the touching problem of box house electric function element, therefore dismounting efficiency is significantly improved, dismounting difficulty obviously reduces.In addition, the second connector of the second retention mechanism and the second bolt assembly 5 are all hidden in groove 133, thereby are strengthening on the basis of connection reliability between cabinet, have improved the aesthetic property of cabinet profile.
It should be noted that, in two cabinets in this programme, one is placed in another one top, and this arrangement can reduce the requirement to space, erecting bed, is appreciated that and removably connects on the basis of relation meeting both, and two cabinets also can be arranged in juxtaposition left and right.In addition, concrete " L " font of the first connector 2 shapes in this programme, has advantages of simple in structure, low cost of manufacture, certainly, removably connects on two cabinet bases satisfied, and this first connector 2 also can adopt other versions.Further, the securing member in this programme is specially the first bolt assembly 3, is meeting on the basis that connects the first connector 2 functions, processing and assembly technology requirement, and this securing member also can be detachable bearing pin or the usual structure of other those skilled in the art.
As shown in Figure 5, above-mentioned the first connector 2 also comprises that 21, two reinforcements 21 of two reinforcements are placed in respectively the two ends of the first connector 2 and are fixedly connected with two madial walls of the first connector 2 respectively.Obviously, the setting of reinforcement 21 can strengthen the non-deformability of the first connector 2, thereby has ensured the connection fixing of cabinet.Be appreciated that and strengthen on the basis that function, processing and the assembly technology of the first connector 2 non-deformabilities require meeting, the number of above-mentioned reinforcement 21 is specifically as follows other numerical value such as 1,3.
As previously mentioned, upper case comprises upper box 11 and upper box lid 12, and upper box 11 has an openend, and upper box lid 12 is covered on this openend and is connected on upper box 11 by bolt assembly is dismountable.Wherein, the first connector 2 is fixedly connected on openend, and upper box lid 12 has the space of accommodating this first connector 2.Lower case also comprises lower box 13 and lower case lid 14, does not repeat them here.This programme is by being fixedly connected on respectively the openend of upper box 11 and lower box 13 by two the first connectors 2 and the first connector 2 being hidden in case lid, hide in case lid, avoid retention mechanism to protrude from the lofty sense of cabinet outer surface, thereby not only make inverter monnolithic case structure attractive in appearance, and avoided in installation process because retention mechanism protrudes the problem that touching occurs.
As shown in Figure 3, the electric function element being installed on respectively in upper box 11 and lower box 13 is electrically connected by cable 8, particularly, in this programme, in the opposing sidewalls of upper box 11 and lower box 13, offer respectively the upper shed 111 and the under shed 131 that pass for cable 8.
This programme connects two casings by the retention mechanism of said structure, and offer hatch frame on two casings, the cable 8 of connecting electronic function element is passed by this upper and lower opening, save male and female binding post of the prior art, thereby not only reduce the manufacturing cost of inverter, and avoided the alignment issues in assembling process, improved dismounting efficiency further.For the ease of understanding the concrete structure of upper box and lower box, please also refer to Fig. 7 and Fig. 8, wherein, Fig. 7 shows the perspective view of upper box shown in Fig. 4, and Fig. 8 shows the perspective view of lower box shown in Fig. 4.
In order to improve the IP degree of protection of cabinet, in this programme, in two casings, lower box 13 has periphery wall 132, and upper box 11 has internal perisporium 112, and internal perisporium 112 is set on periphery wall 132; Periphery wall 132 is extended to form to lower box 13 outsides by the edge of under shed 131, and internal perisporium 112 is extended to form to the inside of upper box 11 by the edge of upper shed 111.Obviously, the peripheral wall structure of said structure can play dash effect, in the time that inverter is installed on open air, can avoids rainwater to flow into cabinet inside and damage accommodating electronic devices and components in the inner, thereby can improve functional reliability and the fail safe of inverter.
In addition, as shown in Figure 9, the figure shows the main TV structure schematic diagram of two dimension of lower box shown in Fig. 8, the outer surface of above-mentioned periphery wall 132 is guiding surface, is set on described periphery wall with the internal perisporium that leads.In installation process, make the internal perisporium 112 of upper box 11 be easy to be set on the periphery wall 132 of lower box 13, the assembling process that completes lower box 13 that can quickness and high efficiency.For the ease of understanding the concrete structure of periphery wall 132, please also refer to Figure 10, the figure shows the right TV structure schematic diagram of lower box shown in Fig. 9.Certainly, meeting on the basis of water-proof function, processing and assembly technology requirement, the outer surface of this periphery wall 132 also can be perpendicular to the setting of cabinet lateral wall.
In order to improve the IP degree of protection of above-mentioned cabinet, in this programme, also comprise that seal member 9, sealing parts 9 are arranged between two casings, and there is the through hole 91 passing through for cable 8.
Except above-mentioned inverter, the utility model also provides a kind of solar photovoltaic generation system, this system comprises solar photovoltaic assembly, terminal box and inverter, wherein, terminal box is installed on the backboard of solar photovoltaic assembly, the electric signal input end of inverter is connected with the electrical signal of terminal box, and inverter is the inverter of structure as detailed above.Be appreciated that this solar photovoltaic generation system internal functional elements of formation is identical with prior art, those skilled in the art can realize based on prior art, therefore do not repeat them here.
The foregoing is only preferred implementation of the present utility model, do not form the restriction to the utility model protection range.Any any amendment of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection range of the present utility model.

Claims (10)

1. an inverter, comprise at least two cabinets, each described cabinet comprises the casing and the case lid that removably connect, and the relative lateral wall of adjacent two described casings fits, it is characterized in that, also comprise at least one group of the first retention mechanism and/or at least one group of the second retention mechanism;
Described the first retention mechanism comprises the first securing member (3) and two the first connectors (2), two described the first connectors (2) are fixed on respectively the outer surface of two described casings, and removably connect by described the first securing member (3);
Described the second retention mechanism comprises the second securing member (5) and the second connector (4), in two described casings, the outer surface of one has groove (133), described the second connector (4) is fixedly connected in described groove (133), and removably connects by described the second securing member (5) and casing described in another.
2. inverter according to claim 1, it is characterized in that, each described the first connector (2) be shaped as " L " font, described the first connector (2) is fixedly connected on corresponding described casing by a side arm, and another side arm has the installing hole (21) suitable with described the first securing member (3).
3. inverter according to claim 2, it is characterized in that, described the first connector (2) also comprises at least one reinforcement (22), and described reinforcement (22) is fixedly connected with the two side of described the first connector (2) respectively.
4. according to the inverter described in any one in claims 1 to 3, it is characterized in that, described casing has an openend, described case lid is covered on described openend and removably connects with described casing, described the first connector (2) is connected in described openend, described case lid has the space of accommodating described the first connector (2), and described groove (133) is located at the lateral wall of corresponding described casing.
5. according to the inverter described in any one in claims 1 to 3, it is characterized in that, be installed on respectively two electric function elements in described casing by cable (8) electrical connection, relatively described sidewall all has the opening passing for described cable (8).
6. inverter according to claim 5, it is characterized in that, in two described cabinets, one is placed in the top of another one, lower box (13) has periphery wall (132), upper box (11) has internal perisporium (112), and described internal perisporium (112) is set on described periphery wall (132); Described periphery wall (132) is extended to form to described lower box (13) outside by the edge of corresponding described opening (131), and described internal perisporium (112) is extended to form to the inside of described upper box (11) by the edge of corresponding described opening (111).
7. inverter according to claim 6, is characterized in that, the outer surface of described periphery wall (132) is guiding surface, and to lead, described internal perisporium (112) is set on described periphery wall (132).
8. inverter according to claim 6, it is characterized in that, also comprise seal member (9), described seal member (9) is between two described casings, and described seal member (9) has the through hole (91) passing for described cable (8).
9. according to the inverter described in claim 4 or 5, it is characterized in that, in two described casings, one is placed in the top of another one, and described groove (133) is located at lower box.
10. a solar photovoltaic generation system, comprise solar photovoltaic assembly, terminal box and inverter, described terminal box is fixedly connected on the backboard of described solar photovoltaic assembly, the electric signal input end of described inverter is connected with the electrical signal of described terminal box, it is characterized in that, described inverter is specially inverter as claimed in any one of claims 1-9 wherein.
CN201320751066.5U 2013-11-22 2013-11-22 Solar photovoltaic power generation system and inverter thereof Expired - Lifetime CN203645554U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320751066.5U CN203645554U (en) 2013-11-22 2013-11-22 Solar photovoltaic power generation system and inverter thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320751066.5U CN203645554U (en) 2013-11-22 2013-11-22 Solar photovoltaic power generation system and inverter thereof

Publications (1)

Publication Number Publication Date
CN203645554U true CN203645554U (en) 2014-06-11

Family

ID=50876773

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320751066.5U Expired - Lifetime CN203645554U (en) 2013-11-22 2013-11-22 Solar photovoltaic power generation system and inverter thereof

Country Status (1)

Country Link
CN (1) CN203645554U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114421333A (en) * 2021-09-13 2022-04-29 江门劳士国际电气有限公司 Electric box and box-type electrical equipment
WO2023221511A1 (en) * 2022-05-16 2023-11-23 阳光电源股份有限公司 Wiring device for photovoltaic device, and photovoltaic apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114421333A (en) * 2021-09-13 2022-04-29 江门劳士国际电气有限公司 Electric box and box-type electrical equipment
CN114421333B (en) * 2021-09-13 2024-06-25 江门劳士国际电气有限公司 Electric box and box-type electric equipment
WO2023221511A1 (en) * 2022-05-16 2023-11-23 阳光电源股份有限公司 Wiring device for photovoltaic device, and photovoltaic apparatus

Similar Documents

Publication Publication Date Title
CN201260137Y (en) Photovoltaic integrated wiring box for building
US20150103496A1 (en) Power conversion and connection for photovoltaic (pv) panel arrays
CN203645554U (en) Solar photovoltaic power generation system and inverter thereof
CN205212199U (en) Prefabricated cabin formula combination secondary equipment wiring structure
CN204680910U (en) A kind of cable fast joint structure for modularization secondary unit equipment
CN203416177U (en) Photovoltaic inverter
CN201947559U (en) Detachable intelligent instrument with connection terminal boxes
CN202840914U (en) Combined-type frequency converter
CN102306672B (en) Modular junction box
CN206451944U (en) Connector fixing construction and battery modules
CN204046176U (en) A kind of SVG power cabinet
CN209460310U (en) A kind of intelligent electric meter direct current energy metering module
CN104467570A (en) Compact motor controller for electric vehicle
CN210110218U (en) LED display screen box body group and LED display screen
CN106129836A (en) A kind of power cabinet of ease of assembly
CN208093896U (en) Integral type connecting terminal through walls
CN102683451B (en) Structurally improved photovoltaic junction box
CN203015371U (en) Movable shielding box of intelligent antenna calibration plate
CN202111259U (en) Socket type connector for conducting and charging
CN220342288U (en) Inverter AC output chassis and inverter system
CN202797811U (en) Combinable built-in lighting distribution box
CN219394193U (en) Drawer and comprehensive protection cabinet
CN205665321U (en) Intelligent relay protection tester that possesses novel package assembly
CN202256433U (en) Electric energy meter junction box and electric energy meter
CN203839788U (en) Spliced structure of box-type substation and multi-segment box-type substation

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20140611

CX01 Expiry of patent term