CN107768184A - A kind of pole type outlet terminal - Google Patents
A kind of pole type outlet terminal Download PDFInfo
- Publication number
- CN107768184A CN107768184A CN201710967120.2A CN201710967120A CN107768184A CN 107768184 A CN107768184 A CN 107768184A CN 201710967120 A CN201710967120 A CN 201710967120A CN 107768184 A CN107768184 A CN 107768184A
- Authority
- CN
- China
- Prior art keywords
- outlet terminal
- conducting rod
- vacuum interrupter
- pole type
- type outlet
- 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.)
- Pending
Links
- 239000003822 epoxy resin Substances 0.000 claims abstract description 17
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 9
- 229920000260 silastic Polymers 0.000 claims abstract description 4
- 230000003068 static Effects 0.000 claims description 15
- 238000009413 insulation Methods 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 150000002632 lipids Chemical class 0.000 claims 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 230000005684 electric field Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000001808 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 210000000078 Claw Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 241000194386 Coelosis Species 0.000 description 1
- 241001124569 Lycaenidae Species 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 101700050571 SUOX Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 235000014987 copper Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 235000005035 ginseng Nutrition 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010338 mechanical breakdown Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
-
- H—ELECTRICITY
- H01—BASIC ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66223—Details relating to the sealing of vacuum switch housings
Abstract
The invention discloses a kind of pole type outlet terminal to include successively from top to bottom：The flat copper (21) that is connected with power grid cables, the conducting rod (22) connected with flat copper (21), with radome (26), the vacuum interrupter (27) integrated with conducting rod (22) and the dielectric by the element one castable below the conducting rod (22) leading-out terminal that conducting rod (22) is coaxial.The dielectric extends downwardly, and in the vacuum interrupter (27) chamber formed below, and inserts (28) is sealed with the dielectric of the extension.The dielectric is that epoxy resin adds silastic structure, include the epoxy resin layer (24) of sealing conducting rod (22), radome (26), vacuum interrupter (27) and inserts (28), and be cast in the silicon rubber cluster parachute (23) on the epoxy resin layer (24) surface.
Description
Technical field
The present invention relates to post load switch product, and in particular to a kind of pole type outlet terminal.
Background technology
With the development of society, people are to the reliability of power supply and the requirement more and more higher of power off time, so as to distribution
The requirement of equipment also more and more higher.In order to improve the reliability of supplying power allocation, strengthen the safety management of power distribution network, national grid is public
Department proposed in 2016 promotes one or two convergence projects of controller switching equipment.In the project, national grid transport inspection department discloses proposition
It is the supporting disconnecting switch of switch or breaker of line sectionalizing and contact point, to match somebody with somebody disconnecting switch should meet electric switching operation
In hot standby requirement.
In recent years, 10kV on-pole switch is extensive and is used heavily in distribution network systems, right in order to ensure the safety of power network
The requirement more and more higher of its reliability and maintenance-free.At present, claw type outlet terminal is widely used in the one of on-pole switch
Secondary disengaging line side, existing part claw type outlet terminal structure is that vacuum interrupter is arranged on inside outlet terminal, with leading
Electric pole connects outlet terminal and vacuum interrupter, usually packaging structure.Many skills be present in this packaging structure
Art problem：Such as, outlet terminal mounting portion is weak, has electric discharge phenomena to fixed case, causes shelf depreciation value bigger than normal；Parts
Species is more, causes production cost height and efficiency of assembling is low；Mechanical parameter is unstable, and adjustment difficulty is big etc..
The content of the invention
For above-mentioned deficiency of the prior art, the present invention provides a kind of pole type outlet terminal, and it is by leading-out terminal
Together with son is integrated with vacuum interrupter, phase spacing can be increased to greatest extent, effectively avoid that alternate electric discharge occurs
Phenomenon, to realize the minimizing of equipment, non-maintaining, high reliability request.
The present invention, which adopts, provides a kind of pole type outlet terminal, including：The pole type outlet terminal is from upper
Include successively under：The flat copper that is connected with power grid cables, the conducting rod being connected with flat copper, the radome coaxial with conducting rod, with
The vacuum interrupter of conducting rod integration and insulation Jie by the element one castable below the conducting rod leading-out terminal
Matter.
Preferably, the dielectric extends downwardly, in vacuum interrupter chamber formed below, and in the extension
Dielectric in be sealed with inserts.
Preferably, the insulation crust includes epoxy resin layer, and the dielectric is that epoxy resin adds silastic structure,
Include the epoxy resin layer of sealing conducting rod, radome, vacuum interrupter and inserts, and be cast in the epoxy resin layer
The silicon rubber cluster parachute on surface.
Preferably, the opening of the dielectric of the extension is provided with the guide plate of inserts fixation, insulated tension pole
Component is embedded in the guide plate, and is conductively connected by the moved end of adjusting rod and the vacuum interrupter.
Preferably, the connection end of the conducting rod and the static side face of vacuum interrupter are that the twin fixed guide-vane in point and face contacts.
Preferably, after the static side stud of vacuum interrupter and the swivel nut of conducting rod are connected through a screw thread fixation, sealing is passed through
Circle is in close contact the static side face of vacuum interrupter and the end face of conducting rod.
Preferably, the radome is the internal diameter one of endless metal ring cover, the circular inside diameters and the vacuum interrupter
Cause, the opening of annular upper and lower ends radially outward turns on one's side volume to being contacted with annular profile wall, and lower ending opening crimping is outer with being arranged on
Tab on perisporium is tangent, and the tab radially outward draws insulation crust.
Preferably, the radome is arranged at the sealing ring, is connected around the static side face of vacuum interrupter and conducting rod
Connect the junction at end.
Preferably, the pole type outlet terminal shelf depreciation value is less than 5pc.
Preferably, the opening of the dielectric of the extension is provided with the guide plate of inserts fixation, insulated tension pole
Component is embedded in the guide plate, and is conductively connected by the moved end of adjusting rod and the vacuum interrupter.
Preferably, connect the flat copper and the conducting rod of the vacuum interrupter static side is arranged to straight.
Beneficial effects of the present invention are：Above-mentioned pole type structure adds silastic structure using epoxy resin, and inside will
Vacuum interrupter connects sealing in outlet terminal with outlet conductive pole, outside cast silicon rubber cluster parachute.Meanwhile internally
Install radome additional, effectively solve the problem of outlet terminal electric discharge for a long time, reduce shelf depreciation value, improve Product Safety.
In addition, pole type structure greatly reduces the difficulty of shop assembled assembling, workshop efficiency of assembling is improved.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, embodiment will be described below
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is a kind of profile of the embodiment of pole type outlet terminal one provided in the present invention；
Fig. 2 is the amplification profile of radome in Fig. 1；
Fig. 3 and Fig. 4 is respectively voltage and field strength analysis number of Fig. 2 shielding case structures in pole outlet terminal electric field
According to figure；
Fig. 5 is a kind of profile of another embodiment of pole type outlet terminal provided in the present invention；
Fig. 6 is pole type outlet terminal and the sectional view of an embodiment of insulated tension pole assembling components in Fig. 1；
Fig. 7 is pole type outlet terminal and the sectional view of an embodiment of insulated tension pole assembling components in Fig. 5.
Description of reference numerals：
21- flat coppers；22- conducting rods；23- silicon rubber cluster parachutes；24- epoxy resin layers；25- sealing rings；26- radomes；27-
Vacuum interrupter；28- inserts；3- insulated tension pole components；51- guide plates；52- spring washers；53- big flat washer；54- is flexible coupling.
Embodiment
Technical scheme is clearly and completely described below in conjunction with accompanying drawing, it is clear that described implementation
Example is part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that instruction or hint relative importance.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It is be combined with each other into conflict can.
The invention provides a kind of pole type outlet terminal, solves current outlet terminal mounting portion weakness, right
Fixed case has electric discharge phenomena, and shelf depreciation value is bigger than normal；Parts species is more, cost is high, and efficiency of assembling is low；Machinery ginseng
Unstable, the technical problems such as adjustment difficulty is big of number.
As shown in figure 1, in an a kind of embodiment of pole type outlet terminal of the present invention, including：The sealing
Pole type outlet terminal includes successively from top to bottom：The flat copper 21 that is connected with power grid cables, the conducting rod 22 being connected with flat copper 21,
With radome 26 that conducting rod 22 is coaxial, the vacuum interrupter 27 integrated with conducting rod 22 and by the outlet of conducting rod 22
Hold the dielectric of following element one castable.The dielectric extends downwardly, under the vacuum interrupter 27
Square coelosis, and inserts 28 is sealed with the dielectric of the extension.The dielectric is that epoxy resin adds silicon rubber
Plastic structure, including sealing conducting rod 22, radome 26, the epoxy resin layer 24 of vacuum interrupter 27 and inserts 28, and pour
Note the silicon rubber cluster parachute 23 on the surface of epoxy resin layer 24.
Said structure has many advantages：First, the parts of the pole type outlet terminal, conductor overlap joint
Face, the quantity of connection fastener greatly reduce, and can simplify the assembling link of major loop, reduce major loop resistance, improve
The reliability of main conductive circuit connection；Second, vacuum interrupter is embedded into after epoxy resin solids material plus silicon rubber so that
Influence of the external environment of pole to vacuum interrupter is reduced to minimum, improves insulating capacity；3rd, made using epoxy resin
For dielectric, the volume of the structure is considerably reduced, while sufficient protection can be provided for vacuum interrupter again, is made
It is in assembling or transport from unexpected collision；4th, there is silicon rubber cluster parachute in the surface casting of the epoxy resin layer, its energy
The inner body of the pole type outlet terminal is more fully protected, and it is not-easy-to-freeze, safety, weatherability are strong.
Further, the connection end of the conducting rod 22 and the static side face of vacuum interrupter 27 are point and the twin fixed guide-vane in face
Contact.Wherein in one embodiment, the static side stud of vacuum interrupter 27 and the swivel nut of the connection end of conducting rod 22 are connected by screw thread
Connect after fixing, the static side face for making vacuum interrupter 27 by sealing ring 25 contacts with the end face seal of the connection end of conducting rod 2.In addition
The cast of overall sealing, eliminate middle plus be flexible coupling and the connection of other conductive pieces, overall electrical resistance significantly reduce.
Analyzed by electric field strength, internally install radome additional, effectively solve the problem of outlet terminal electric discharge for a long time, drop
Low partial discharge, there is provided high product security.As shown in Fig. 2 the radome 26 is endless metal ring cover, the circular inside diameters and institute
State that the internal diameter of vacuum interrupter 27 is consistent, the openings of annular upper and lower ends radially outward turns on one's side volume to being contacted with annular profile wall,
Lower ending opening crimping and the tab being arranged on periphery wall are tangent, and the tab radially outward draws insulation crust.The shielding
Cover 26 is arranged at the sealing ring 25, around the junction in the static side face of vacuum interrupter 27 and the connection end of conducting rod 22.It is logical
Cross electric-field intensity analysis and simulate repeatedly, sunykatuib analysis datagram determines design, the position of metal annular cover referring to Fig. 3 and Fig. 4
And layout type, this final structure is simulated by electric Field Calculation and partial discharge quantity test result in kind is that shelf depreciation value is less than
5pc.According to product structure feature, processing technology and former outlet terminal processing technology with reference to pole, the priority of mould are adjusted
It is whole etc., so as to ensure that production go out after stable performance, and efficiently solve that former shelf depreciation is bigger than normal, and parameter is unstable
The problems such as, product reliability is improved, overall parts are few in addition, and cost reduces, and efficiency of assembling greatly promotes.
As shown in figure 5, in a kind of another embodiment of pole type outlet terminal of the present invention.Actually using
In, using, as B phases, different curved formula outlet terminals is as A/C (that is, vacuum interrupters 27 with the straight outlet terminal of Fig. 1 embodiments
Static side be connected by curved conducting rod 2 with terminal 1), phase spacing can be increased to greatest extent, effectively avoid occurring alternate
Electric discharge phenomena.
Fig. 6 shows the section view of an embodiment of the pole type outlet terminal and insulated tension pole assembling components in Fig. 1
Figure, the end of the pole type outlet terminal 2 are provided with guide plate 51, and the insulated tension pole component 3 is embedded in described lead
Into plate 51, and the moved end by the adjusting rod 31 and the movable end of vacuum arc extinguishing chamber of the pole type outlet terminal 2
It is conductively connected.Preferably, the guide plate 51 is fixed to the rubber of the end of the pole type outlet terminal 2 by inserts
In shell, spring washer 52, big flat washer for buffering are additionally provided between insulated tension pole component 3 and pole type outlet terminal 2
53 and it is flexible coupling 54.Most of mechanical connecting element between the mechanism and vacuum interrupter is all omitted, so as to move
Part and transmission link are most simplified in current all operating mechanisms, therefore can reduce to the abrasion of mechanical part and power consumption most
Small, fault rate is preferably minimized, and can meet the high reliability request for switching mechanical performance.Meanwhile in complete linear motion, almost
Completely eliminate the possibility for producing mechanical breakdown.Fig. 6 another kind pole type outlet terminals and insulated tension pole assembling components
Another embodiment sectional view.Its operation principle is identical.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
- A kind of 1. pole type outlet terminal, it is characterised in that including：The pole type outlet terminal includes successively：The flat copper (21) that is connected with power grid cables, it is connected with flat copper (21) Conducting rod (22), with radome (26) that conducting rod (22) is coaxial, the vacuum interrupter (27) integrated with conducting rod (22) with And the dielectric by the element one castable below the conducting rod (22) leading-out terminal.
- 2. pole type outlet terminal according to claim 1, it is characterised in that the dielectric extends downwardly, In the vacuum interrupter (27) chamber formed below, and inserts (28) is sealed with the dielectric of the extension.
- 3. pole type outlet terminal according to claim 1 or 2, it is characterised in that the dielectric is epoxy Resin adds silastic structure, including sealing conducting rod (22), radome (26), the ring of vacuum interrupter (27) and inserts (28) Oxygen tree lipid layer (24), and it is cast in the silicon rubber cluster parachute (23) on the epoxy resin layer (24) surface.
- 4. pole type outlet terminal according to claim 1, it is characterised in that the connection end of the conducting rod (22) Static side face with vacuum interrupter (27) is that point and the twin fixed guide-vane in face contact.
- 5. pole type outlet terminal according to claim 4, it is characterised in that the static side spiral shell of vacuum interrupter (27) Post and the swivel nut of conducting rod (22) connection end are connected through a screw thread after fixing, and make vacuum interrupter (27) by sealing ring (25) Static side face contacts with the end face seal of conducting rod (2) connection end.
- 6. pole type outlet terminal according to claim 1, it is characterised in that the radome (26) is annular gold Belong to ring cover, the circular inside diameters are consistent with the internal diameter of the vacuum interrupter (27), and the opening of annular upper and lower ends is radially outward For rollover volume to being contacted with annular profile wall, lower ending opening crimping and the tab being arranged on periphery wall are tangent, and the tab is radially Outwards draw insulation crust.
- 7. pole type outlet terminal according to claim 6, it is characterised in that the radome (26) is arranged on institute Sealing ring (25) place is stated, around the junction in the static side face of vacuum interrupter (27) and conducting rod (22) connection end.
- 8. pole type outlet terminal according to claim 7, it is characterised in that the pole type outlet terminal Shelf depreciation value is less than 5pc.
- 9. pole type outlet terminal according to claim 2, it is characterised in that the dielectric of the extension is opened The fixed guide plate (51) of inserts (28) is provided with mouthful, insulated tension pole component (3) is embedded in the guide plate (51), And it is conductively connected by the moved end of adjusting rod (31) and the vacuum interrupter (27).
- 10. pole type outlet terminal according to claim 1, it is characterised in that connect the flat copper (21) and institute The conducting rod (22) for stating vacuum interrupter (27) static side is arranged to straight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967120.2A CN107768184A (en) | 2017-10-17 | 2017-10-17 | A kind of pole type outlet terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967120.2A CN107768184A (en) | 2017-10-17 | 2017-10-17 | A kind of pole type outlet terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107768184A true CN107768184A (en) | 2018-03-06 |
Family
ID=61268820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710967120.2A Pending CN107768184A (en) | 2017-10-17 | 2017-10-17 | A kind of pole type outlet terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107768184A (en) |
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| CN203312144U (en) * | 2013-06-28 | 2013-11-27 | 浙江天润电力科技有限公司 | Ultra-short-type solid encapsulation pole column |
| CN204230141U (en) * | 2014-10-20 | 2015-03-25 | 上海东自电气有限公司 | A kind of major loop structure of vacuum circuit-breaker |
| CN105529208A (en) * | 2014-10-27 | 2016-04-27 | 江苏华厦电力成套设备有限公司 | Novel embedded pole |
| CN204289234U (en) * | 2014-11-11 | 2015-04-22 | 厦门理工学院 | Epoxy resin sealing vacuum switch |
| CN204905145U (en) * | 2015-09-19 | 2015-12-23 | 宁波铭德电气科技有限公司 | Reduce vacuum circuit breaker of spiro union |
| CN105261517A (en) * | 2015-10-20 | 2016-01-20 | 珠海许继电气有限公司 | Seal pole for PT cabinet |
| CN205692753U (en) * | 2015-12-31 | 2016-11-16 | 宝鸡市晨光真空电器有限责任公司 | Fixed sealing type pole module for outdoor high-voltage vacuum breaker |
| CN205609429U (en) * | 2016-03-25 | 2016-09-28 | 天津平高智能电气有限公司 | Aerify for cabinet heavy current and seal utmost point post admittedly |
| CN205451943U (en) * | 2016-03-30 | 2016-08-10 | 乐清市伟益高压电器有限公司 | High voltage insulating tube |
| CN205789689U (en) * | 2016-07-08 | 2016-12-07 | 许昌永新电气股份有限公司 | A kind of silica gel solid sealed pole for high voltage switch |
| CN206098273U (en) * | 2016-08-31 | 2017-04-12 | 河南森源电气股份有限公司 | Gu seal utmost point post and casting mold thereof |
| CN206340479U (en) * | 2016-08-31 | 2017-07-18 | 华仪电气股份有限公司 | A kind of pole of integral moulding by casting |
| CN206271608U (en) * | 2016-12-14 | 2017-06-20 | 江苏南瑞帕威尔电气有限公司 | The vacuum circuit breaker monopole of integrated casting |
| CN207489747U (en) * | 2017-10-17 | 2018-06-12 | 珠海许继电气有限公司 | A kind of pole type outlet terminal |
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Application publication date: 20180306 |