CN105575723B - The electric isolation of intelligences combination and ground interconnection device on a kind of post - Google Patents
The electric isolation of intelligences combination and ground interconnection device on a kind of post Download PDFInfo
- Publication number
- CN105575723B CN105575723B CN201610122616.5A CN201610122616A CN105575723B CN 105575723 B CN105575723 B CN 105575723B CN 201610122616 A CN201610122616 A CN 201610122616A CN 105575723 B CN105575723 B CN 105575723B
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- Prior art keywords
- guide plate
- plate
- insulating bar
- hole
- buffer spring
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- 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.)
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Classifications
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- H—ELECTRICITY
- H01—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
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
Abstract
The electric isolation of intelligences combination and ground interconnection device on a kind of post, including being connected respectively in lead-in line joint, the inlet wire guide plate of outlet joint and body side, outlet guide plate and earth plate, first through hole and the second through hole are offered on outlet guide plate and earth plate respectively, a conducting rod for passing through first through hole is provided between inlet wire guide plate and earth plate, the upper end of conducting rod is provided with a conductive contact ring, an insulating bar for passing through the second through hole is additionally provided with below outlet guide plate, the grounding contact ring of a connection conducting rod and insulating bar is additionally provided between outlet guide plate and earth plate, the lower end of insulating bar is additionally provided with the actuating unit that the driving insulating bar and conducting rod move up and down.The power-off of the present invention and ground interconnection device, it can be achieved to be grounded while disconnection and the user that intelligences combination is electric on post, the operation of easy access personnel, ensure that the personal safety of maintainer.
Description
Technical field
The present invention relates to electrical control equipment technical field, more specifically refer to that intelligences combination on a kind of post is electric
Isolation and ground interconnection device.
Background technology
Vacuum circuit breaker on outdoor lamppost is usually used in rural power grids and city net system, as point, close load current, overload current and
Short circuit current is used.Vacuum circuit breaker on outdoor lamppost mainly includes upper insulating cylinder, lower insulating cylinder, vacuum interrupter, operation transmission
Mechanism and casing, vacuum interrupter are arranged in insulating cylinder, and operation transmission mechanism is arranged in casing, in vacuum extinction room
Contact of breaker is set, lead-in line joint is provided with the upper surface of upper insulating cylinder, the side wall of lower insulating cylinder is provided with outlet joint.So
And traditional vacuum circuit breaker on outdoor lamppost is all not provided with earth terminal mostly, cause branch road and the vacuum circuit breaker of device power supply (DPS) side
Device switch can not be grounded after pulling open, and forcing needs to be grounded after pulling open upper level vacuum circuit breaker, cause the area having a power failure
Expand, have impact on the electricity consumption of user.
To solve problem above, Authorization Notice No. is that CN 204760308U Chinese utility model patent discloses one kind
Pvs (pole-mounted vacuum switch) ground terminal, it includes：One support insulator, its upper end are provided with an earth terminal, and the earth terminal is with connecing
Ground rod connection, the support insulator lower end are fixed on mounting bracket, and the mounting bracket is fixed on vacuum switch lateral surface side；
One end of one wire is connected and fixed to the support insulator upper end, the other end and vacuum switch load side with the earth terminal
Cable connection.When the patent solves power failure although, pulling open after branch road and device power supply (DPS) side vacuum switch can not hanging earthing conductor
Problem, but the operation of the ground connection of the pvs (pole-mounted vacuum switch) of the utility model needs to be distributed and carried out, i.e., first closes vacuum switch, so
Drop bar is clipped in the earth terminal of vacuum switch ground terminal afterwards, the operation to maintainer is made troubles.
The content of the invention
The present invention provides the isolation and ground interconnection device that intelligences combination is electric on a kind of post, to solve existing pole vacuum
The shortcomings of ground connection operation of breaker, which needs to be distributed, to be carried out, and the operation to maintainer is made troubles.
The present invention adopts the following technical scheme that：
The electric isolation of intelligences combination and ground interconnection device on a kind of post, including be connected respectively in lead-in line joint,
The inlet wire guide plate of outlet joint and body side, outlet guide plate and earth plate, on the outlet guide plate and earth plate
First through hole and the second through hole are offered respectively, and the first through hole is passed through provided with one between the inlet wire guide plate and earth plate
Conducting rod, the upper end of the conducting rod is provided with a conductive contact ring, and one is additionally provided with below the outlet guide plate through described
The insulating bar of second through hole, is additionally provided with a connection conducting rod between the outlet guide plate and earth plate and the ground connection of insulating bar is touched
Headring, the lower end of the insulating bar are additionally provided with the actuating unit that the driving insulating bar and conducting rod move up and down, when conduction is touched
The upper surface of headring is connected with inlet wire guide plate, and grounding contact ring upper surface is then connected with outlet guide plate；When under conductive contact ring
End face is connected with outlet guide plate, and grounding contact ring lower surface is then connected with earth plate.
Further, the inlet wire guide plate, outlet guide plate and earth plate are in same perpendicular.
Preferred embodiment one, the actuating unit include a motor, a reduction box, a power transmission shaft and a plurality of songs
Handle, the motor connect the power transmission shaft by the reduction box, and the power transmission shaft is horizontally set on the side of casing, a plurality of
Crank is disposed on the power transmission shaft, and the upper end of each crank is corresponding with the lower end of the insulating bar be hinged respectively.
Preferred embodiment two, the actuating unit include a motor, a reduction box, a power transmission shaft and plurality of pins
Wheel and rack, the motor connect the power transmission shaft by the reduction box, and the power transmission shaft is horizontally set on the side of casing,
A plurality of gears are disposed on the power transmission shaft, and a rack is engaged in the side of each gear respectively, each rack it is upper
Termination is connected respectively the lower end of the insulating bar.
Preferred embodiment three, the actuating unit include a motor, a reduction box, a worm shaft and a plurality of snails
Wheel and screw mandrel, the motor connect the worm-wheel shaft by the reduction box, and the worm-wheel shaft is horizontally set on the side of casing,
Plural thread segment is interval with the worm-wheel shaft, the side per thread segment is engaged one worm gear of connection respectively, each worm gear
Center opens up an internal thread hole, connects a screw mandrel in the internal thread hole respectively, and the upper end of each screw mandrel correspondingly connects
Connect the lower end of the insulating bar.
Further, the side of vacuum circuit breaker casing is further fixed on being respectively used to sense insulating bar rising highest order
Put and decline the first of extreme lower position close to inductive switch and second close to inductive switch.
Further, the device also includes a controller, and the controller is respectively with motor, first close to inductive switch and
Two control connection close to inductive switch.
Further, the lower surface of the inlet wire guide plate is provided with the first buffer spring, and first buffer spring is by being connected to
The first conductive support plate on inlet wire guide plate is fixed；The upper surface and lower surface of the first through hole are respectively equipped with the second buffer spring
With the 3rd buffer spring, the second buffer spring and the 3rd buffer spring are respectively by the be connected on outlet guide plate second conductive support plate
Fixed with the 3rd conductive support plate；The upper surface of second through hole is provided with the 4th buffer spring, and the 4th buffer spring is by connecting
The 4th conductive support plate on earth plate is fixed.
Further, the conducting rod by sequentially passing through the 3rd conductive support plate, the 3rd buffering elastic upwards below outlet guide plate
Spring, first through hole, the second buffer spring and the second conductive support plate, the conductive contact ring of its upper end are connected to the first conductive branch
Plate, the insulating bar sequentially pass through the second through hole, the 4th buffer spring and the 4th conductive support plate upwards by earth plate lower section,
The grounding contact ring of its upper end connection conducting rod is connected to the 3rd conductive support plate.
From the above-mentioned description to structure of the present invention, compared to the prior art, the invention has the advantages that：
1st, power-off of the invention and ground interconnection device, the intelligences combination electrically side of insulating cylinder and lower insulating cylinder on post
Face is provided with the conducting rod and insulating bar being connected with each other, and grounding contact ring has been provided with conducting rod, when conducting rod and inlet wire
When joint is connected, grounding contact ring is then connected with outlet joint, makes user end normal power supply；And work as intelligences combination on post and electrically break
When opening, i.e., conducting rod is pulled down disconnects with lead-in line joint, until conducting rod and outlet joint are connected, grounding contact ring then with
Earth plate is connected, and is grounded while realizing the disconnection and user that intelligences combination is electric on post, the operation of easy access personnel, is protected
The personal safety of maintainer is demonstrate,proved.
2nd, power-off and ground interconnection device, the conducting rod and insulating bar of multiple interconnections of the invention pass through same power
Mechanism driving moves up and down, and not only saves cost, simple operation, and can realize the simultaneously operating of multiple conducting rods.
3rd, each guide plate end face of power-off of the invention and ground interconnection device, conductive contact ring and the contact of grounding contact ring
On set up buffer spring, make the contact of conductive contact ring and grounding contact ring with guide plate that there is certain cushion space, extend this hair
Bright service life.
Brief description of the drawings
Fig. 1 is the front view of the embodiment of the present invention one.
Fig. 2 is the right view of the embodiment of the present invention one.
Fig. 3 is Fig. 2 sectional view.
Fig. 4 is the schematic diagram of user terminal ground state of the present invention.
Fig. 5 is the front view of the embodiment of the present invention two.
Fig. 6 is the right view of the embodiment of the present invention two.
Fig. 7 is the front view of the embodiment of the present invention three.
Fig. 8 is the right view of the embodiment of the present invention three.
Embodiment
Illustrate the embodiment of the present invention with reference to the accompanying drawings.For the comprehensive understanding present invention, it is described to below perhaps
More details, but to those skilled in the art, the present invention can be also realized without these details.
Embodiment one
Intelligences combination is electric on a kind of post, and referring to Figures 1 and 2, including a casing 10, casing 10 are provided with three upper insulation
Cylinder 20 and three lower insulating cylinders 30, the top of upper insulating cylinder 20 are provided with a lead-in line joint 21, and the lower side wall of insulating cylinder 30 is provided with outlet
Joint 31.Intelligences combination electrically also includes a power-off and ground interconnection device, the power-off on the post includes with ground interconnection device
Be connected respectively in lead-in line joint 21, the inlet wire guide plate 22 of outlet joint 31 and the side of casing 10, outlet guide plate 32 and
Earth plate 12, inlet wire guide plate 22, outlet guide plate 32 and earth plate 12 are in same perpendicular.
It is logical to offer first through hole 33 and second to Fig. 4 respectively for reference picture 2 on the outlet guide plate 32 and earth plate 12
Hole 13, a conducting rod 41 for passing through the first through hole 33 is provided between the inlet wire guide plate 22 and earth plate 12, it is described to lead
The upper end of electric pole 41 is provided with a conductive contact ring 411, and the lower section of outlet guide plate 32 is additionally provided with one and passes through second through hole
13 insulating bar 42, connecing for a connection conducting rod 41 and insulating bar 42 is additionally provided between the outlet guide plate 32 and earth plate 12
Ground contact ring 421, the lower end of the insulating bar 42 are additionally provided with the power that the driving insulating bar 42 and conducting rod 41 move up and down
Mechanism, when upper surface and the inlet wire guide plate 22 of conductive contact ring 411 are connected, the upper surface of grounding contact ring 421 then with outlet guide plate
32 connect, i.e., intelligences combination is electrically in normal power supply state on post of the invention；When conductive contact ring 411 lower surface with
Outlet guide plate 32 is connected, and the lower surface of grounding contact ring 421 is then connected with earth plate 12, i.e., intelligences combination electricity on post of the invention
Gas is off, meanwhile, user terminal side ground connection.
Reference picture 2 and Fig. 3, the actuating unit of the present embodiment include a motor 51, a reduction box 52, a power transmission shaft 53 and
Three cranks 54, the motor 51 connect the power transmission shaft 53 by reduction box 52, and the power transmission shaft 53 is horizontally set on casing
10 side, three cranks 54 are disposed on power transmission shaft 53, the upper end of each crank 54 respectively with the insulating bar 42
Lower end is corresponding be hinged.When motor 51 works, its output shaft makes power transmission shaft 53 be rotated in horizontal plane in the presence of reduction box 52,
So that crank 54 is pulled up or bounced back downwards, insulating bar 42 and conducting rod 41 then with stretching and the retraction of crank 54 and on
Lower lifting.
Reference picture 2 and Fig. 4, the side of the casing 10 are further fixed on being respectively used to sense the rising of insulating bar 42 extreme higher position
With decline the first of extreme lower position close to inductive switch 61 and second close to inductive switch 62.The vacuum circuit breaker of the present invention
Also include a controller, the controller is controlled with motor 51, first close to inductive switch 61 and second close to inductive switch 62 respectively
System connection.
With continued reference to Fig. 2 and Fig. 3, the lower surface of the inlet wire guide plate 22 is provided with the first buffer spring 23, first buffering
Spring 23 is fixed by the be connected on inlet wire guide plate 22 first conductive support plate 24；The upper surface and lower surface of the first through hole 33
The second buffer spring 34 and the 3rd buffer spring 35 are respectively equipped with, the second buffer spring 34 and the 3rd buffer spring 35 are respectively by even
The second conductive 36 and the 3rd conductive support plate 37 of support plate being connected on outlet guide plate 32 is fixed；The upper surface of second through hole 13 is set
There is the 4th buffer spring 14, the 4th buffer spring 14 is fixed by the be connected on earth plate 12 the 4th conductive support plate 15.Institute
State conducting rod 41 and the 3rd conductive support plate 37, the 3rd buffer spring 35, first through hole are sequentially passed through by the lower section of outlet guide plate 32 upwards
33rd, the second buffer spring 34 and the second conductive support plate 36, the conductive contact ring 411 of its upper end are connected to the first conductive support plate
24, the insulating bar 42 sequentially passes through the second through hole 13, the 4th buffer spring 14 and the 4th upwards by the lower section of earth plate 12
Conductive support plate 15, the grounding contact ring 421 of its upper end connection conducting rod 41 are connected to the 3rd conductive support plate 37.Conductive contact ring
411 and grounding contact ring 421 contact each guide plate end face on set up buffer spring, make conductive contact ring 411 and grounding contact
Contact of the ring 421 with guide plate has certain cushion space, extends the service life of the present invention.
Embodiment two
Reference picture 5 and Fig. 6, the present embodiment and embodiment one are essentially identical, and its difference is the structure of actuating unit,
The actuating unit of the present embodiment includes a motor 51, a reduction box 52, a power transmission shaft 53 and a plurality of gears 54 and rack 55,
The motor 51 connects the power transmission shaft 53 by the reduction box 52, and the power transmission shaft 53 is horizontally set on the side of casing 10
Face, a plurality of gears are disposed on the power transmission shaft 53, and a rack 55 is engaged in the side of each gear 54 respectively, each
The upper end of rack 55 is connected respectively the lower end of the insulating bar 42.When motor 51 works, its output shaft is in reduction box 52
In the presence of make power transmission shaft 53 horizontal plane rotate so that gear 54 rotates upwardly and downwardly, and rack is in the engagement of gear 54
Under oscilaltion therewith, and then move up and down insulating bar 42 and conducting rod 41.
Embodiment three
Reference picture 7 and Fig. 8, the present embodiment is also essentially identical with embodiment one, and its difference is the knot of actuating unit
Structure, the actuating unit of the present embodiment include a motor 51, a reduction box 52, a worm shaft 53 and a plurality of worm gears 54 and screw mandrel
55, the motor 51 connects the worm-wheel shaft 53 by the reduction box 52, and the worm-wheel shaft 53 is horizontally set on casing 10
Side, plural thread segment 531 is interval with the worm-wheel shaft 53, the side per thread segment 531 is engaged one snail of connection respectively
Wheel 54, the center of each worm gear 54 opens up an internal thread hole, connects a screw mandrel 55 in the internal thread hole respectively, each
The upper end of screw mandrel 55 correspondingly connects the lower end of the insulating bar 42.When motor 51 works, work of its output shaft in reduction box 52
Worm-wheel shaft 53 is set to be rotated in horizontal plane under, the rotation of worm-wheel shaft 53 rotates its in the vertical direction of side worm screw 54, due to
The center of worm screw 54 is provided with screwed hole, and screw mandrel 55 is located in screwed hole, and therefore, the rotation of worm screw 54 can drive the upper of screw mandrel 55
Underdrive, and then move up and down insulating bar 42 and conducting rod 41.
The embodiment of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Conceive the change that unsubstantiality is carried out to the present invention, the behavior for invading the scope of the present invention all should be belonged to.
Claims (7)
1. the electric isolation of intelligences combination and ground interconnection device on a kind of post, it is characterised in that：Including be connected respectively in
Lead-in line joint, the inlet wire guide plate of outlet joint and body side, outlet guide plate and earth plate, the outlet guide plate and connect
First through hole and the second through hole are offered on ground guide plate respectively, one is provided between the inlet wire guide plate and earth plate described in
The conducting rod of first through hole, the upper end of the conducting rod are provided with a conductive contact ring, one are additionally provided with below the outlet guide plate
Through the insulating bar of second through hole, a connection conducting rod and insulating bar are additionally provided between the outlet guide plate and earth plate
Grounding contact ring, the lower end of the insulating bar is additionally provided with the actuating unit that the driving insulating bar and conducting rod move up and down,
When the upper surface of conductive contact ring is connected with inlet wire guide plate, grounding contact ring upper surface is then connected with outlet guide plate；When conduction is touched
The lower surface of headring is connected with outlet guide plate, and grounding contact ring lower surface is then connected with earth plate, the inlet wire guide plate, outlet
Guide plate and earth plate are in same perpendicular, and the lower surface of the inlet wire guide plate is provided with the first buffer spring, and this
One buffer spring is fixed by the be connected on inlet wire guide plate first conductive support plate；The upper surface and lower surface of the first through hole point
Not She You the second buffer spring and the 3rd buffer spring, the second buffer spring and the 3rd buffer spring are led by being connected to outlet respectively
The second conductive support plate and the 3rd conductive support plate on plate are fixed；The upper surface of second through hole is provided with the 4th buffer spring, should
4th buffer spring is fixed by the 4th conductive support plate being connected on earth plate.
2. the electric isolation of intelligences combination and ground interconnection device on a kind of post as claimed in claim 1, it is characterised in that：Institute
Stating actuating unit includes a motor, a reduction box, a power transmission shaft and a plurality of cranks, and the motor is connected by the reduction box
The power transmission shaft is connect, the power transmission shaft is horizontally set on the side of casing, and a plurality of cranks are disposed on the power transmission shaft,
The upper end of each crank is corresponding with the lower end of the insulating bar be hinged respectively.
3. the electric isolation of intelligences combination and ground interconnection device on a kind of post as claimed in claim 1, it is characterised in that：Institute
Actuating unit is stated including a motor, a reduction box, a power transmission shaft and a plurality of gears and rack, the motor by described to subtract
Fast case connects the power transmission shaft, and the power transmission shaft is horizontally set on the side of casing, and a plurality of gears are disposed on the biography
On moving axis, a rack is engaged in the side of each gear respectively, and the upper end of each rack is connected respectively the insulating bar
Lower end.
4. the electric isolation of intelligences combination and ground interconnection device on a kind of post as claimed in claim 1, it is characterised in that：Institute
Actuating unit is stated including a motor, a reduction box, a worm shaft and a plurality of worm gears and screw mandrel, the motor by described to subtract
Fast case connects the worm-wheel shaft, and the worm-wheel shaft is horizontally set on the side of casing, plural screw thread is interval with the worm-wheel shaft
Section, the side per thread segment are engaged one worm gear of connection respectively, and the center of each worm gear opens up an internal thread hole, the interior spiral shell
A screw mandrel is connected in pit respectively, the upper end of each screw mandrel correspondingly connects the lower end of the insulating bar.
5. the electric isolation of intelligences combination and ground interconnection device, its feature on a kind of post as described in claim 2-4 is any
It is：The side of casing is further fixed on being respectively used to sense insulating bar rising extreme higher position and decline the first of extreme lower position to approach
Inductive switch and second is close to inductive switch.
6. the electric isolation of intelligences combination and ground interconnection device on a kind of post as claimed in claim 5, it is characterised in that：Also
Including a controller, the controller controls close to inductive switch close to inductive switch and second with motor, first connect respectively.
7. the electric isolation of intelligences combination and ground interconnection device on a kind of post as claimed in claim 1, it is characterised in that：Institute
Conducting rod is stated by sequentially passing through the 3rd conductive support plate, the 3rd buffer spring, first through hole, the second buffering below outlet guide plate upwards
Spring and the second conductive support plate, the conductive contact ring of its upper end are connected to the first conductive support plate, and the insulating bar is led by being grounded
The second through hole, the 4th buffer spring and the 4th conductive support plate are sequentially passed through below plate upwards, its upper end connection conducting rod
Grounding contact ring is connected to the 3rd conductive support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122616.5A CN105575723B (en) | 2016-03-04 | 2016-03-04 | The electric isolation of intelligences combination and ground interconnection device on a kind of post |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610122616.5A CN105575723B (en) | 2016-03-04 | 2016-03-04 | The electric isolation of intelligences combination and ground interconnection device on a kind of post |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105575723A CN105575723A (en) | 2016-05-11 |
| CN105575723B true CN105575723B (en) | 2018-01-02 |
Family
ID=55885745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610122616.5A Active CN105575723B (en) | 2016-03-04 | 2016-03-04 | The electric isolation of intelligences combination and ground interconnection device on a kind of post |
Country Status (1)
| Country | Link |
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| CN (1) | CN105575723B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111952113B (en) * | 2020-06-23 | 2022-05-31 | 祥兴电气有限公司 | Vacuum circuit breaker on post |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060794Y (en) * | 2007-07-13 | 2008-05-14 | 宁波鑫鑫鑫寅电气有限公司 | Vacuum breaker |
| CN202189724U (en) * | 2011-08-30 | 2012-04-11 | 温州新机电器有限公司 | High-voltage vacuum switch |
| US20130292358A1 (en) * | 2011-04-14 | 2013-11-07 | Impact Power, Inc. | Three-phase, multi-way vacuum interrupter switchgear with internal ground switches |
| CN205376383U (en) * | 2016-03-04 | 2016-07-06 | 福建省宏科电力科技有限公司 | Intelligent combination electric isolation and ground connection interconnection device on convenient post |
| CN205376381U (en) * | 2016-03-04 | 2016-07-06 | 福建省宏科电力科技有限公司 | Electric isolation and ground connection interconnection device of intelligent combination on post |
| CN205508670U (en) * | 2016-03-04 | 2016-08-24 | 福建省宏科电力科技有限公司 | Intelligent combination electric isolation and ground connection interconnection device on post convenient to use |
-
2016
- 2016-03-04 CN CN201610122616.5A patent/CN105575723B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201060794Y (en) * | 2007-07-13 | 2008-05-14 | 宁波鑫鑫鑫寅电气有限公司 | Vacuum breaker |
| US20130292358A1 (en) * | 2011-04-14 | 2013-11-07 | Impact Power, Inc. | Three-phase, multi-way vacuum interrupter switchgear with internal ground switches |
| CN202189724U (en) * | 2011-08-30 | 2012-04-11 | 温州新机电器有限公司 | High-voltage vacuum switch |
| CN205376383U (en) * | 2016-03-04 | 2016-07-06 | 福建省宏科电力科技有限公司 | Intelligent combination electric isolation and ground connection interconnection device on convenient post |
| CN205376381U (en) * | 2016-03-04 | 2016-07-06 | 福建省宏科电力科技有限公司 | Electric isolation and ground connection interconnection device of intelligent combination on post |
| CN205508670U (en) * | 2016-03-04 | 2016-08-24 | 福建省宏科电力科技有限公司 | Intelligent combination electric isolation and ground connection interconnection device on post convenient to use |
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| Publication number | Publication date |
|---|---|
| CN105575723A (en) | 2016-05-11 |
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