CN205666157U - Isolator and earthing switch structure - Google Patents
Isolator and earthing switch structure Download PDFInfo
- Publication number
- CN205666157U CN205666157U CN201620484857.XU CN201620484857U CN205666157U CN 205666157 U CN205666157 U CN 205666157U CN 201620484857 U CN201620484857 U CN 201620484857U CN 205666157 U CN205666157 U CN 205666157U
- Authority
- CN
- China
- Prior art keywords
- assembling
- static contact
- station
- moving contact
- grounding
- 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
- 230000003068 static effect Effects 0.000 claims abstract description 58
- 238000002955 isolation Methods 0.000 claims abstract description 23
- 239000012212 insulator Substances 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 27
- 210000003371 toe Anatomy 0.000 claims description 7
- 229910018503 SF6 Inorganic materials 0.000 claims description 5
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Landscapes
- Elimination Of Static Electricity (AREA)
Abstract
The utility model discloses an isolator and earthing switch structure, include three station casings, install three station institutions in the three station casings outside, three station casings in be equipped with and keep apart static contact assembly, grounding static contact assembly, moving contact, isolation static contact assembly through the one end of disk insulator fixed mounting at three station casings, grounding static contact assembly through the other end of ground connection seat assembly fixed mounting at three station casings, the moving contact setting at the moving contact fit on of fixed mounting in three station casings, the moving contact be located the middle part that keeps apart static contact assembly and grounding static contact assembly line axle, three station institutions drive moving contact keeping apart the axial displacement of static contact assembly with grounding static contact assembly line axle to the realization is moved contact connection and is kept apart static contact assembly or grounding static contact assembly. The utility model discloses novel structure can effectively prevent the maloperation, guarantees through -flow safety.
Description
Technical field
This utility model belongs to electric switch equipment field, specifically, relates to a kind of disconnecting switch and earthed switch
Structure.
Background technology
In 252kV high voltage power transmission and transforming system, as one of element the most frequently used in equipment, disconnecting switch and earthed switch
General employing is all split-phase type two station structure, relies on mechanical interlocking and electric interlock, although can meet through-flow requirement,
But having that running environment is severe, service life is short, assembling and manufacturing cost are high, the problem that maintenance workload is big, simultaneously machinery connection
Unreliability and the electric interlock of lock are easily slipped up factor and artificial maloperation, cause the reliability and safety of power system
It is substantially reduced, causes immeasurable loss.
Along with the fast development of power system, transformer station's 252kV combined electric appliance equipment has begun to widely used, combination electricity
Disconnecting switch and earthed switch in device use split-phase type two station structure can not meet the requirement of user.
In view of this special proposition this utility model.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, it is provided that a kind of disconnecting switch and
Earthed switch structure, uses mechanical latching structure, disconnecting switch and earthed switch to share moving contact, and when a switch is through-flow, another is opened
Close disconnection, can effectively anti-misoperation, it is ensured that through-flow safety.
For solving above-mentioned technical problem, the basic conception of this utility model employing technical scheme is:
A kind of disconnecting switch and earthed switch structure, including three station housings, be arranged on the three of three station hull outside
Station mechanism, is provided with isolation static contact assembling, grounding static contact assembling, moving contact in three described station housings, described every
Fitting through disk insulator from static contact and be fixedly mounted on one end of three station housings, described grounding static contact fits through
Grounding base assembling is fixedly mounted on the other end of three station housings, and described moving contact is arranged on and is fixedly installed in three station housings
Moving contact fit on, described moving contact be positioned at isolation static contact assembling with grounding static contact assembling line axle middle part, institute
The three position mechanism stated drives moving contact to assemble the moving axially, with reality of line axle at isolation static contact assembling and grounding static contact
Existing moving contact connects isolation static contact assembling or grounding static contact assembling.
Further, described moving contact includes tooth bar and the gear of tooth bar engaged transmission, and described gear passes through three works
Position mechanism driving is to realize tooth bar and isolation static contact assembling or the connection of grounding static contact assembling.
Further, described moving contact also includes the worm screw of travelling gear, described worm screw and three position mechanism spline
Connect.
Further, described three position mechanism is assembled and worm screw by the bearing block being fixedly mounted on three station housings
Being in transmission connection, described bearing block assembling is connected with worm screw spline.
Further, described bearing block assembling is provided with square toes, and described three position mechanism is provided with and is connected with square toes
Square hole.
Further, described bearing block fits through transmission insulating bar and assembles the worm screw that is in transmission connection, and described transmission is exhausted
Edge bar assembling two ends are connected with bearing block assembling, worm screw spline respectively.
Further, described disk insulator is fixedly mounted on three station hull outside by screw.
Further, described disk insulator is made up of epoxy resin.
Further, described transmission insulating bar assembling is made up of vacuum-latexed pipe.
Further, sulfur hexafluoride gas is sealed in the cavity of three described station housings.Further, described dynamic touch
Head assembling include tooth bar and the gear of tooth bar engaged transmission, described gear by three position mechanism transmission with realize tooth bar with
Isolation static contact assembling (or connection of grounding static contact assembling).
After using technique scheme, the present invention compared with prior art has the advantages that.
This utility model has and carries mechanical latching function, anti-misoperation function, and solving that isolating/grounding switch runs can
By a property difficult problem, in SF6 gas, running and do not affected by external environment, insulating properties are high, and reliability is greatly enhanced, and radiating condition is good,
There is not problem of oxidation and pollution problem in contact, the non-maintaining cycle is long, and operating cost is substantially reduced, and uses three station structures, from
So realize the logic blocking between DS/ES, stop the probability of maloperation.This utility model novel structure, simple structure, can have
Effect anti-misoperation, it is ensured that through-flow safety.
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing, as the part of the application, is used for providing being further understood from of the present utility model, this utility model
Schematic description and description be used for explaining this utility model, but do not constitute improper restriction of the present utility model.Obviously,
Accompanying drawing in describing below is only some embodiments, to those skilled in the art, is not paying creative labor
On the premise of Dong, it is also possible to obtain other accompanying drawings according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is assembling schematic diagram of the present utility model；
Fig. 3 is schematic diagram during this utility model isolation combined floodgate；
Fig. 4 is schematic diagram during this utility model contact of earth；
In figure: 1-disk insulator；2-isolation static contact assembling；3-moving contact assembles；4-grounding static contact assembles；5-connects
Ground seat assembling；6-supports seat assembling；7-tri-station housing；8-transmission insulating bar assembles；9-bearing block assembles；10-tri-station machine
Structure.
It should be noted that these accompanying drawings and word describe and are not intended as limiting design of the present utility model by any way
Scope, but be that those skilled in the art illustrate concept of the present utility model by reference specific embodiment.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in embodiment, and following example are used for illustrating this
Utility model, but it is not limited to scope of the present utility model.
In description of the present utility model, it should be noted that term " on ", D score, "front", "rear", "left", "right",
Orientation or the position relationship of the instruction such as " vertically ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
It is easy to describe this utility model and simplification description rather than instruction or the device of hint indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " being connected ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be mechanically connected, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.
For the ordinary skill in the art, above-mentioned term specifically containing in this utility model can be understood with concrete condition
Justice.
Such as 1, shown in Fig. 2, Fig. 3, Fig. 4, this utility model one disconnecting switch and earthed switch structure, including three stations
Housing 7, it is arranged on the three position mechanism 10 outside three station housings 7, in three described station housings 7, is provided with isolation static contact dress
Join 2, grounding static contact assembling 4, moving contact, described isolation static contact assembling 2 is fixedly mounted on three works by disk insulator 1
One end of position housing 7, described grounding static contact assembling 4 is fixedly mounted on another of three station housings 7 by grounding base assembling 5
End, described moving contact be arranged on be fixedly installed in three station housings 7 moving contact assembling 3 on, described moving contact be positioned at every
Assemble the middle part of 4 line axles from static contact assembling 2 and grounding static contact, described three position mechanism 10 drives moving contact in isolation
Static contact assembling 2 assembles moving axially of 4 line axles with grounding static contact, to realize moving contact connection isolation static contact assembling 2
Or grounding static contact assembling 4.
Specifically, described moving contact includes tooth bar and the gear of tooth bar engaged transmission, and described gear passes through three stations
Mechanism 10 transmission is to realize tooth bar and isolation static contact assembling 2 or the connection of grounding static contact assembling 4, and described moving contact also wraps
Including the worm screw of travelling gear, described worm screw is connected with three position mechanism 10 spline, and described three position mechanism 10 is by fixing
The bearing block assembling being arranged on three station housings 7 is connected with worm-drive, and described bearing block assembling is connected with worm screw spline,
Described bearing block assembling is provided with square toes, and described three position mechanism 10 is provided with the square hole being connected with square toes, described axle
Bearing fits through transmission insulating bar assembling 8 and is in transmission connection worm screw, described transmission insulating bar assemble 8 two ends respectively with bearing block
Assembling, worm screw spline connect.
Wherein, disk insulator 1 is fixedly mounted on three station housings 7 outsides by screw.Disk insulator 1 is by asphalt mixtures modified by epoxy resin
Fat is constituted.Transmission insulating bar assembling 8 is made up of vacuum-latexed pipe.Sulfur hexafluoride gas is sealed in the cavity of three station housings 7.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3, Figure 4, this utility model one disconnecting switch and earthed switch structure, including disc type
Insulator 1, isolation static contact assembling 2, moving contact assembling 3, moving contact, grounding static contact assembling 4, grounding base assemble 5, support seat
Assembling 6, three station housings 7, transmission insulating bar assembling 8, bearing block assembling 9, three position mechanism 10, moving contact includes gear, tooth
Bar, worm screw, isolation static contact assembling 2, moving contact assembling 3, grounding static contact assembling 4 be provided with isolated insulation protection, disc type insulate
It is outside that son 1 is fixed on three station housings 7 by housing screw, and moving contact assembling 3 is fixed on support seat assembling 6 by rigging screw
On, grounding static contact assembling 4 is bolted on grounding base assembling 5, and transmission insulating bar assembles 8 two ends splined holes respectively with three
Individual moving contact assembles the rotating shaft spline fitted of 3 one end, and the rotating shaft other end spline of moving contact assembling 3 turns with bearing block assembling 9
Axle spline fitted, bearing block assembling 9 is bolted on three station housings 7, the square hole of three position mechanism 10 and bearing block
The square toes of assembling 9 are connected, and are linked together by outer bolt and three station housings 7, and described moving contact assembling 3 is arranged
There is the moving contact of moving contact assembling 3.
Three position mechanism 10 is straight by the moving contact of bearing block assembling 9 and transmission insulating bar assembling 8 drive moving contact assembling
Line transmission, when three position mechanism 10 turns clockwise, the moving contact of moving contact assembling 3 is to grounding static contact assembling 4 motion, directly
To earthed switch "on" position.Owing to disconnecting switch and earthed switch have shared the moving contact of moving contact assembling 3, earthed switch closes
During lock, the moving contact of moving contact assembling 3 is directly controlled by mechanism, and disconnecting switch does not has moving contact to use, and therefore meets electric power
The anti-error requirement of " when earthed switch closes a floodgate, disconnecting switch can not be closed a floodgate " of system；It is in the earthed switch of closing position, three
Under the driving of station mechanism 10, rotating counterclockwise, the moving contact of moving contact assembling 3 arrives intermediate orientation；In centre position
Time moving contact assembling 3 moving contact can to grounding static contact assemble 4 Linear transmissions or to isolation static contact assemble 2 straight-line transmitting
Dynamic, transmission direction performs according to operational order；The moving contact of moving contact assembling 3 in an intermediate position is inverse at three position mechanism 10
When hour hands rotate, trend isolation static contact assembling 2 motion, until disconnecting switch "on" position；Owing to disconnecting switch and ground connection are opened
Pass has shared the moving contact of moving contact assembling 3, and when disconnecting switch is closed a floodgate, the moving contact of moving contact assembling 3 is directly controlled by mechanism,
Earthed switch does not has movable touch knife to use, and therefore meets " when disconnecting switch is closed a floodgate, earthed switch can not close a floodgate " of power system
Anti-error requirement.
This utility model has and carries mechanical latching function, anti-misoperation function, and solving that isolating/grounding switch runs can
By a property difficult problem, in SF6 gas, running and do not affected by external environment, insulating properties are high, and reliability is greatly enhanced, and radiating condition is good,
There is not problem of oxidation and pollution problem in contact, the non-maintaining cycle is long, and operating cost is substantially reduced, and uses three station structures, from
So realize the logic blocking between DS/ES, stop the probability of maloperation.This utility model novel structure, simple structure, can have
Effect anti-misoperation, it is ensured that through-flow safety.
The above is only preferred embodiment of the present utility model, not makees this utility model any pro forma
Limit, although this utility model is disclosed above with preferred embodiment, but is not limited to this utility model, any familiar
The technical staff of this patent is in the range of without departing from technical solutions of the utility model, when the technology contents of available above-mentioned prompting is made
Go out a little change or be modified to the Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solutions of the utility model,
Any simple modification, equivalent variations and the modification made above example according to technical spirit of the present utility model, the most still belongs to
In the range of this utility model scheme.
Claims (10)
1. a disconnecting switch and earthed switch structure, it is characterised in that: include three station housings (7), be arranged on three stations
The three position mechanism (10) in housing (7) outside, is provided with isolation static contact assembling (2), ground connection quiet in three described station housings (7)
Contact assembling (4), moving contact, described isolation static contact assembling (2) is fixedly mounted on three station shells by disk insulator (1)
One end of body (7), described grounding static contact assembling (4) is fixedly mounted on three station housings (7) by grounding base assembling (5)
The other end, described moving contact is arranged on moving contact assembling (3) being fixedly installed in three station housings (7), and described is dynamic tactile
Head is positioned at the middle part of isolation static contact assembling (2) and grounding static contact assembling (4) line axle, and described three position mechanism (10) drives
Dynamic moving contact assembles moving axially of (4) line axle in isolation static contact assembling (2) with grounding static contact, to realize moving contact even
Connect isolation static contact assembling (2) or grounding static contact assembling (4).
A kind of disconnecting switch the most according to claim 1 and earthed switch structure, it is characterised in that described moving contact
Including tooth bar and the gear of tooth bar engaged transmission, described gear by three position mechanism (10) transmission with realize tooth bar with every
From static contact assembling (2) or the connection of grounding static contact assembling (4).
A kind of disconnecting switch the most according to claim 2 and earthed switch structure, it is characterised in that described moving contact
Also include that the worm screw of travelling gear, described worm screw are connected with three position mechanism (10) spline.
A kind of disconnecting switch the most according to claim 3 and earthed switch structure, it is characterised in that three described stations
Mechanism (10) is connected with worm-drive by the bearing block assembling being fixedly mounted on three station housings (7), described bearing block
Assembling is connected with worm screw spline.
A kind of disconnecting switch the most according to claim 4 and earthed switch structure, it is characterised in that described bearing block
Assembling is provided with square toes, and described three position mechanism (10) is provided with the square hole being connected with square toes.
A kind of disconnecting switch the most according to claim 4 and earthed switch structure, it is characterised in that described bearing block
Fit through transmission insulating bar assembling (8) to be in transmission connection worm screw, described transmission insulating bar assembling (8) two ends respectively with bearing block
Assembling, worm screw spline connect.
A kind of disconnecting switch the most according to claim 1 and earthed switch structure, it is characterised in that described disc type is exhausted
It is outside that edge (1) is fixedly mounted on three station housings (7) by screw.
A kind of disconnecting switch the most according to claim 1 and earthed switch structure, it is characterised in that described disc type is exhausted
Edge (1) is made up of epoxy resin.
A kind of disconnecting switch the most according to claim 6 and earthed switch structure, it is characterised in that described transmission is exhausted
Edge bar assembling (8) is made up of vacuum-latexed pipe.
10. according to a kind of disconnecting switch described in claim 1 and earthed switch structure, it is characterised in that three described stations
Sulfur hexafluoride gas is sealed in the cavity of housing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484857.XU CN205666157U (en) | 2016-05-25 | 2016-05-25 | Isolator and earthing switch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620484857.XU CN205666157U (en) | 2016-05-25 | 2016-05-25 | Isolator and earthing switch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666157U true CN205666157U (en) | 2016-10-26 |
Family
ID=57161288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620484857.XU Active CN205666157U (en) | 2016-05-25 | 2016-05-25 | Isolator and earthing switch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666157U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373821A (en) * | 2016-11-17 | 2017-02-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break disconnector switch module |
| CN106847579A (en) * | 2017-02-28 | 2017-06-13 | 山东达驰高压开关有限公司 | A kind of 252kV three-stations |
| CN108831788A (en) * | 2018-05-08 | 2018-11-16 | 河南平高电气股份有限公司 | A kind of three-station isolating grounding switch and its cylinder |
| CN109637883A (en) * | 2018-11-19 | 2019-04-16 | 珠海许继电气有限公司 | A kind of switching device |
| CN110535057A (en) * | 2018-05-23 | 2019-12-03 | 河南平芝高压开关有限公司 | GIS equipment equipped with an isolating/grounding switch opening and closing arrival indication device |
| CN111192784A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | A three-position isolation grounding switch |
| CN112038156A (en) * | 2020-06-22 | 2020-12-04 | 平高集团有限公司 | Double-break isolating switch and high-voltage line connection structure |
| CN118538585A (en) * | 2024-07-24 | 2024-08-23 | 浙江正泰电气科技有限公司 | Combination switch structure and switch equipment |
-
2016
- 2016-05-25 CN CN201620484857.XU patent/CN205666157U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373821A (en) * | 2016-11-17 | 2017-02-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break disconnector switch module |
| WO2018090548A1 (en) * | 2016-11-17 | 2018-05-24 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Double-break isolated switch module |
| CN106847579A (en) * | 2017-02-28 | 2017-06-13 | 山东达驰高压开关有限公司 | A kind of 252kV three-stations |
| CN108831788A (en) * | 2018-05-08 | 2018-11-16 | 河南平高电气股份有限公司 | A kind of three-station isolating grounding switch and its cylinder |
| CN108831788B (en) * | 2018-05-08 | 2019-09-06 | 河南平高电气股份有限公司 | A three-position isolating grounding switch and its barrel |
| CN110535057A (en) * | 2018-05-23 | 2019-12-03 | 河南平芝高压开关有限公司 | GIS equipment equipped with an isolating/grounding switch opening and closing arrival indication device |
| CN109637883A (en) * | 2018-11-19 | 2019-04-16 | 珠海许继电气有限公司 | A kind of switching device |
| CN111192784A (en) * | 2020-02-24 | 2020-05-22 | 正泰电气股份有限公司 | A three-position isolation grounding switch |
| CN112038156A (en) * | 2020-06-22 | 2020-12-04 | 平高集团有限公司 | Double-break isolating switch and high-voltage line connection structure |
| CN112038156B (en) * | 2020-06-22 | 2023-02-17 | 平高集团有限公司 | Double-break isolating switch and high-voltage line connection structure |
| CN118538585A (en) * | 2024-07-24 | 2024-08-23 | 浙江正泰电气科技有限公司 | Combination switch structure and switch equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205666157U (en) | Isolator and earthing switch structure | |
| US7189933B2 (en) | Solid insulated disconnection switch | |
| CN110808189B (en) | Three-phase common-box isolating switch and high-voltage switch equipment | |
| CN216528683U (en) | Automatic reclosing circuit breaker for electric leakage | |
| WO2016034088A1 (en) | Composite combined electric appliance | |
| CN201639186U (en) | A new gas-insulated metal-enclosed isolating switch | |
| CN202633139U (en) | Three-station isolating grounding switch with double guiding rod and connection rod transmission structure | |
| CN114664592A (en) | Double-break isolating switch for expansion without power failure | |
| CN204760305U (en) | Pot -type is transmission structure for high voltage circuit breaker | |
| CN204537927U (en) | The logic blocking structure of a kind of New Type Isolating Switch and earthed switch | |
| CN201315254Y (en) | Five-station change-over switch | |
| CN116741565A (en) | Three-station isolating switch device and inflatable cabinet | |
| CN109004535A (en) | A kind of New Type Isolating Switch | |
| KR101702605B1 (en) | Gas circuit breaker apparatus of dual driving in gas insulated switchgear | |
| CN202167403U (en) | Transmission device applied to earthing isolators of three-phase sub-box combined electric appliance | |
| KR101390499B1 (en) | Disconnecting switch and earthing switch of gas insulated switchgear | |
| CN211670148U (en) | A moving contact device of an isolation switch | |
| CN103560059B (en) | Fuse-wire tube assembly | |
| KR101468253B1 (en) | Gas insulated switchgear with a disconnecting switch improved driving performances | |
| CN208352744U (en) | A kind of New Type Isolating Switch | |
| KR101914871B1 (en) | Driving device for isolator for gas insulated switchgear | |
| CN217159246U (en) | GIS lightning arrester installation device capable of conducting withstand voltage test | |
| CN205595222U (en) | High -voltage switch trigger device | |
| CN220306148U (en) | Three-station isolating switch device and inflatable cabinet | |
| CN217009039U (en) | A single-phase three-position switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 410600 Jinzhou Avenue 018, Jinzhou New District, Ningxiang County, Changsha City, Hunan Province Patentee after: HUNAN CHANGGAO ELECTRIC CO.,LTD. Country or region after: China Patentee after: Chang Hi-Tech New Technology Co.,Ltd. Address before: 410600 Jinzhou Avenue 018, Jinzhou New District, Ningxiang County, Changsha City, Hunan Province Patentee before: HUNAN CHANGGAO ELECTRIC CO.,LTD. Country or region before: China Patentee before: HUNAN CHANGGAO HIGH VOLTAGE SWITCHGEAR GROUP Co.,Ltd. |