CN107069525A - Isolate lower earthed switch cabinet in one kind - Google Patents
Isolate lower earthed switch cabinet in one kind Download PDFInfo
- Publication number
- CN107069525A CN107069525A CN201710218139.7A CN201710218139A CN107069525A CN 107069525 A CN107069525 A CN 107069525A CN 201710218139 A CN201710218139 A CN 201710218139A CN 107069525 A CN107069525 A CN 107069525A
- Authority
- CN
- China
- Prior art keywords
- contact
- arc
- cabinet
- chutes
- connection
- 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
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/075—Earthing arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses isolate lower earthed switch cabinet in one kind, including cabinet, isolation circuit breakers, lower earthing and cable vault are provided with cabinet, upper isolation circuit breakers include arc-chutes and disconnecting switch, disconnecting switch is located at the top of cabinet, disconnecting switch is connected with isolated operation mechanism, and arc-chutes side is connected with arc extinguishing operating mechanism；Lower earthing is located at below arc-chutes and is connected by pull bar with disconnecting switch；Cable vault is connected with upper isolation circuit breakers.Isolate lower earthed switch cabinet in sheet arc-chutes, disconnecting switch and lower earthing are fully sealed by cabinet, reduce the volume of switch cubicle, and make it that electrical body is no longer exposed, no longer influenceed by the erosion of air, dust, so as to improve the life-span of switch cubicle, in addition, lower earthing has making capability, improve equipment performance, it is ensured that personal security, simple in construction, connection and reasonable arrangement of the invention, small volume and high reliability.
Description
Technical field
The present invention relates to loop networks switch technical field, more particularly, to earthed switch cabinet under isolating in one kind.
Background technology
At present, external looped network switch apparatus, switch cubicle under lower isolation by the way of being grounded.As country is to distribution net equipment
Intellectuality, variation, reliability, life makes safely the continuous improvement of new requirement, in particular life property claims.To prevent
There is residual charge in electrical equipment after deenergization, jeopardize the safety of maintenance electrician；Circuit breaker internal failure is prevented, it is endless
Electrical equipment is still powered after full separating brake, sub-switching operation, jeopardizes the safety of maintenance electrician.Need to make conventional switch cubicle and change
It is dynamic, the big isolation fracture of air is reserved, so as to play a part of protecting personal safety.Therefore, a kind of simple in construction, connection and reasonable arrangement,
The switch cubicle of small volume, high reliability.
The content of the invention
In view of the above-mentioned problems, the invention provides isolating lower earthed switch cabinet in one kind, its simple in construction, connection and reasonable arrangement,
Small volume, high reliability.
The present invention is for the technical scheme that is used of its technical problem of solution：
Isolate lower earthed switch cabinet, including cabinet in one kind, the cabinet upper and lower end is provided with inlet-outlet sleeve, the cabinet
It is provided with body
Upper isolation circuit breakers, the upper isolation circuit breakers include arc-chutes and are connected to the disconnecting switch of arc-chutes upper end, described
Disconnecting switch is located at the top of cabinet, and disconnecting switch is connected with isolated operation mechanism, and the arc-chutes side is connected with arc extinguishing operation
Mechanism；
Lower earthing, the lower earthing is located at below arc-chutes and is connected by pull bar with disconnecting switch；
Cable vault, the cable vault is connected with upper isolation circuit breakers.
As the further improvement of such scheme, the upper isolation circuit breakers also include the breaker peace being arranged on cabinet
Shelve and busbar, the arc-chutes be arranged on breaker mounting bracket on and arc-chutes static side upward, moved end down, it is described every
Leave pass to be arranged on breaker mounting bracket and be connected with arc-chutes static side, the movable end of arc extinguishing chamber passes through coupling mechanism and busbar
Connection, the breaker mounting bracket is provided with the rotating mechanism that can coordinate with the coupling mechanism, the rotating mechanism and arc extinguishing
Operating mechanism is connected.
As the further improvement of such scheme, the disconnecting switch includes being arranged on upper tactile at the top of breaker mounting bracket
Head mechanism, the lower contact mechanism and drive mechanism for being arranged on arc-chutes static side, the drive mechanism connect with isolated operation mechanism
Connect, the lower contact mechanism is connected or separated by drive mechanism with upper contact head mechanism.
As the further improvement of such scheme, the upper contact head mechanism includes being arranged on upper at the top of breaker mounting bracket
Long contact is provided with contact base, the upper contact head seat, the upper contact head seat lower end is provided with the upper contact head extended downwardly, described
Upper contact head and the connection of long contact, the lower contact mechanism include lower contact, and the lower contact is fixedly installed by contact holder
In the static side of the arc-chutes, lower contact is upwardly extended, and the contact holder two ends are fixed on the breaker mounting bracket,
The lower contact upper end is hinged with moving contact.
As the further improvement of such scheme, the drive mechanism include be rotatably arranged on breaker mounting bracket and with
Cursor, the cursor and one are fixedly installed in the isolation rotary shaft of isolated operation mechanism connection, the isolation rotary shaft
One end of gusset piece is hinged, and the gusset piece other end is hinged with a moving contact coupling block, and the moving contact coupling block is touched with dynamic
Head is fixedly connected.
As the further improvement of such scheme, the coupling mechanism includes connecting rod, and the busbar passes through connecting rod and arc extinguishing
Connection is developed in room moved end, and the connecting rod extends straight down and its lower end is provided with coupling spindle, and the rotating mechanism includes peace
Rotating shaft locating rack on breaker mounting bracket and rotating be located in the rotating shaft locating rack and with arc extinguishing operating mechanism
Be provided with the breaker rotating axis of connection, the breaker rotating axis can with coupling spindle coordinate cut-off cam.
As the further improvement of such scheme, the cable vault is connected with busbar, and the busbar is unilateral soft busbar.
As the further improvement of such scheme, the lower earthing includes the earthing mounting bracket being arranged on cabinet,
Link gear and contact mechanism are provided with the earthing mounting bracket, the contact mechanism includes U-shaped contact and ground connection is touched
Head, described pull bar one end is connected with link gear, and the other end is with isolating rotary shaft connection.
As the further improvement of such scheme, the earthing mounting bracket offers vertical guide groove and S type guide grooves, described
Link gear includes being slidably arranged in the vertical guide groove and the first sliding block and the second sliding block in S type guide grooves respectively, in addition to
Connect the first connecting rod and the second connecting rod of the second sliding block of connection and contact mechanism of the first sliding block and the second sliding block, the pull bar
One end is connected with first connecting rod, and the other end is with isolating rotary shaft connection.
As the further improvement of such scheme, the contact mechanism also includes being rotatably arranged on the earthing mounting bracket
On contact rotary shaft and the rotating shaft coupling block that is fixedly connected with the contact rotary shaft, be provided with the contact rotary shaft
Grounding copper bar, the U-shaped contact and grounding contact are arranged on the grounding copper bar.
The beneficial effects of the invention are as follows：Isolate in sheet lower earthed switch cabinet by cabinet by arc-chutes, disconnecting switch with
Earthing is fully sealed, and reduces the volume of switch cubicle, and make it that electrical body is no longer exposed, is no longer invaded by air, dust
The influence of erosion, so as to improve the life-span of switch cubicle, in addition, lower earthing has making capability, improves equipment performance, it is ensured that
Personal security, simple in construction, connection and reasonable arrangement of the invention, small volume and high reliability.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention, rather than is all implemented
Example, on the premise of not paying creative work, other that can also be obtained according to these accompanying drawings are set those skilled in the art
Meter scheme and accompanying drawing：
Fig. 1 is the front view of present pre-ferred embodiments；
Fig. 2 is the side view of present pre-ferred embodiments；
Fig. 3 is the side view of upper isolation circuit breakers in present pre-ferred embodiments；
Fig. 4 is the structural representation of lower earthing in present pre-ferred embodiments.
Embodiment
The technique effect of the design of the present invention, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing clear
Chu, it is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of embodiment, rather than whole embodiments, based on embodiments of the invention, those skilled in the art is not paying
The other embodiment obtained on the premise of creative work, belongs to the scope of protection of the invention.
Referring to figs. 1 to Fig. 4, lower earthed switch cabinet, including cabinet 1 are isolated in one kind, the upper and lower end of cabinet 1 is respectively provided with
There is inlet-outlet sleeve, it is characterised in that：Isolation circuit breakers 2, lower earthing 5 and cable vault 6 are provided with the cabinet 1,
The cable vault 6 is connected with upper isolation circuit breakers 2.
Wherein, referring to figs. 1 to Fig. 3, the upper isolation circuit breakers 2 include arc-chutes 21 and are connected to the upper end of arc-chutes 21
Disconnecting switch 22, the disconnecting switch 22 is located at the top of cabinet 1, and disconnecting switch 22 is connected with isolated operation mechanism 3, the arc extinguishing
The side of room 21 is connected with arc extinguishing operating mechanism 4.The breaker that the upper isolation circuit breakers 2 also include being arranged on cabinet 1 is installed
Frame 23 and busbar 25, it is preferred that the cable vault 6 is connected with busbar 25, the busbar 25 are unilateral soft busbar.The arc extinguishing
Room 21 be arranged on breaker mounting bracket 23 on and the static side of arc-chutes 21 upward, down, the disconnecting switch 22 is arranged on for moved end
It is connected on breaker mounting bracket 23 and with the static side of arc-chutes 21, the moved end of arc-chutes 21 is connected by coupling mechanism 24 with busbar 25
Connect, the breaker mounting bracket 23 is provided with the rotating mechanism 26 that can coordinate with the coupling mechanism 24, the rotating mechanism 26
It is connected with arc extinguishing operating mechanism 4, the rotating mechanism 26 drives institute under the driving of arc extinguishing operating mechanism 4 by coupling mechanism 24
State the up and down motion of the moved end of arc-chutes 21.
Further, the disconnecting switch 22 includes being arranged on the upper contact head mechanism 221 at the top of breaker mounting bracket 23, set
Put the lower contact mechanism 222 and drive mechanism 223 in the static side of arc-chutes 21, the drive mechanism 223 and isolated operation mechanism 3
Connection, the lower contact mechanism 222 is connected or separated by drive mechanism 223 with upper contact head mechanism 221.
Further, the upper contact head mechanism 221 includes being arranged on the upper contact head seat 2211 at the top of breaker mounting bracket 23,
Long contact is provided with the upper contact head seat 2211,2211 lower ends of upper contact head seat are provided with the upper contact head extended downwardly
2212, upper contact head 2212 and long the contact connection, the lower contact mechanism 222 includes lower contact 2221, the lower contact
2221 are fixedly installed on the static side of the arc-chutes 21 by contact holder 2222, and lower contact 2221 is upwardly extended, described to touch
The two ends of head frame 2222 are fixed on the breaker mounting bracket 23, and the lower upper end of contact 2221 is hinged with moving contact
2223, the moving contact 2223 is rotated under the driving of drive mechanism 223 around the lower upper end of contact 2221 to be used for and upper contact head 2212
Connect or separate.
Specifically, the drive mechanism 223 include be rotatably arranged on breaker mounting bracket 23 and with isolated operation mechanism 3
Cursor 2232, the cursor 2232 are fixedly installed in the isolation rotary shaft 2231 of connection, the isolation rotary shaft 2231
It is hinged with one end of a gusset piece 2233, the other end of gusset piece 2233 is hinged with a moving contact coupling block 2234, it is described dynamic
Contact coupling block 2234 is fixedly connected with moving contact 2223.
In addition, the coupling mechanism 24 includes connecting rod, the busbar 25 is developed with the moved end of arc-chutes 21 by connecting rod and is connected,
The connecting rod extends straight down and its lower end is provided with coupling spindle 241, and the rotating mechanism 26 includes being arranged on breaker
Rotating shaft locating rack 261 and rotation on mounting bracket 23 are located in the rotating shaft locating rack 261 and connected with arc extinguishing operating mechanism 4
Be provided with the breaker rotating axis 262 connect, the breaker rotating axis 262 can with coupling spindle 241 coordinate cut-off cam 263, break
The drive link under coupling spindle 241 and the cooperation for cut-offfing cam 263 of road device rotating shaft 262 moves up and down to drive arc-chutes 21 to move
End moves up and down.
Reference picture 1, Fig. 2 and Fig. 4, the lower earthing 5 are located at the lower section of arc-chutes 21 and pass through pull bar and disconnecting switch 22
Connection, the lower earthing 5 includes setting on the earthing mounting bracket 51 being arranged on cabinet 1, the earthing mounting bracket 51
There are link gear 52 and contact mechanism 53, the contact mechanism 53 includes U-shaped contact 531 and grounding contact 532, the pull bar
One end is connected with link gear 52, and the other end is connected with isolating rotary shaft 2231, it is described isolation rotary shaft 2231 drive pull bar to
Lower motion, so as to drive the contact mechanism 53 to close componental movement by link gear 52.
Further, the earthing mounting bracket 51 offers vertical guide groove 511 and S types guide groove 512, the link gear
52 include being slidably arranged in the vertical guide groove 511 and the first sliding block and the second sliding block in S types guide groove 512 respectively, in addition to
The first connecting rod 521 and the second connecting rod 522 of the second sliding block of connection and contact mechanism 53 of the first sliding block and the second sliding block are connected,
Described pull bar one end is connected with first connecting rod 521, and the other end is connected with isolating rotary shaft 2231.
Further, the contact that the contact mechanism 53 also includes being rotatably arranged on the earthing mounting bracket 51 is rotated
It is provided with axle 533 and the rotating shaft coupling block 534 being fixedly connected with the contact rotary shaft 533, the contact rotary shaft 533
Grounding copper bar 535, the U-shaped contact 531 and grounding contact 532 are arranged on the grounding copper bar 535.
Isolate lower earthed switch cabinet in sheet by cabinet 1 that arc-chutes 21, disconnecting switch 22 and lower earthing 5 is completely close
Envelope, and arc-chutes 21 reduce the height of cabinet 1 using upside down, therefore the volume of switch cubicle is reduced, in addition, lower ground connection
Knife 5 has making capability, improves equipment performance, it is ensured that personal security.
Described above-described embodiment is that the above of the present invention is further described, but this should not be interpreted as into this hair
The scope of bright above-mentioned theme is only limitted to above-described embodiment, all models that the present invention is belonged to based on the technology that the above is realized
Enclose.
Claims (10)
1. isolate lower earthed switch cabinet in one kind, including cabinet（1）, the cabinet（1）Upper and lower end is provided with inlet-outlet line set
Pipe, it is characterised in that：The cabinet（1）In be provided with isolation circuit breakers（2）, the upper isolation circuit breakers（2）Including arc extinguishing
Room（21）Be connected to arc-chutes（21）The disconnecting switch of upper end（22）, the disconnecting switch（22）Positioned at cabinet（1）Top, every
Leave pass（22）It is connected with isolated operation mechanism（3）, the arc-chutes（21）Side is connected with arc extinguishing operating mechanism（4）；Under connect
Earthing knife-switch（5）, the lower earthing（5）Positioned at arc-chutes（21）Lower section simultaneously passes through pull bar and disconnecting switch（22）Connection；Cable vault
（6）, the cable vault（6）With upper isolation circuit breakers（2）Connection.
2. the lower earthed switch cabinet of isolation in one kind according to claim 1, it is characterised in that：The upper isolation circuit breakers
（2）Also include being arranged on cabinet（1）On breaker mounting bracket（23）And busbar（25）, the arc-chutes（21）Installed in disconnected
Road device mounting bracket（23）Upper and arc-chutes（21）Static side upward, moved end down, the disconnecting switch（22）Installed in breaker
Mounting bracket（23）Upper and and arc-chutes（21）Static side is connected, the arc-chutes（21）Moved end passes through coupling mechanism（24）With busbar
（25）Connection, the breaker mounting bracket（23）Being provided with can be with the coupling mechanism（24）The rotating mechanism of cooperation（26）, institute
State rotating mechanism（26）With arc extinguishing operating mechanism（4）Connection.
3. the lower earthed switch cabinet of isolation in one kind according to claim 2, it is characterised in that：The disconnecting switch（22）Bag
Include and be arranged on breaker mounting bracket（23）The upper contact head mechanism at top（221）, be arranged on arc-chutes（21）The lower contact machine of static side
Structure（222）And drive mechanism（223）, the drive mechanism（223）With isolated operation mechanism（3）Connection, the lower contact machine
Structure（222）Pass through drive mechanism（223）With upper contact head mechanism（221）Connect or separate.
4. the lower earthed switch cabinet of isolation in one kind according to claim 3, it is characterised in that：The upper contact head mechanism
（221）Including installed in breaker mounting bracket（23）The upper contact head seat at top（2211）, the upper contact head seat（2211）It is middle to set
There are long contact, the upper contact head seat（2211）Lower end is provided with the upper contact head extended downwardly（2212）, the upper contact head（2212）
With the connection of long contact, the lower contact mechanism（222）Including lower contact（2221）, the lower contact（2221）Fixed by contact
Frame（2222）It is fixedly installed on the arc-chutes（21）Static side, lower contact（2221）Upwardly extend, the contact holder
（2222）Two ends are fixed on the breaker mounting bracket（23）On, the lower contact（2221）Upper end is hinged with moving contact
（2223）.
5. the lower earthed switch cabinet of isolation in one kind according to claim 4, it is characterised in that：The drive mechanism（223）
Including being rotatably arranged on breaker mounting bracket（23）It is upper and with isolated operation mechanism（3）The isolation rotary shaft of connection（2231）, institute
State isolation rotary shaft（2231）On be fixedly installed cursor（2232）, the cursor（2232）With a gusset piece（2233）'s
One end is hinged, the gusset piece（2233）The other end and a moving contact coupling block（2234）It is hinged, the moving contact coupling block
（2234）With moving contact（2223）It is fixedly connected.
6. the lower earthed switch cabinet of isolation in one kind according to claim 2, it is characterised in that：The coupling mechanism（24）Bag
Include connecting rod, the busbar（25）Pass through connecting rod and arc-chutes（21）Connection is developed in moved end, the connecting rod extend straight down and
Its lower end is provided with coupling spindle（241）, the rotating mechanism（26）Including installed in breaker mounting bracket（23）On rotating shaft determine
Position frame（261）And rotation is located in the rotating shaft locating rack（261）In and with arc extinguishing operating mechanism（4）The breaker of connection turns
Axle（262）, the breaker rotating axis（262）On be provided with can be with coupling spindle（241）What is coordinated cut-offs cam（263）.
7. the lower earthed switch cabinet of isolation in one kind according to claim 2, it is characterised in that：The cable vault（6）With mother
Row（25）Connection, the busbar（25）For unilateral soft busbar.
8. the lower earthed switch cabinet of isolation in one kind according to claim 5, it is characterised in that：The lower earthing（5）Bag
Include installed in cabinet（1）On earthing mounting bracket（51）, the earthing mounting bracket（51）On be provided with link gear（52）
And contact mechanism（53）, the contact mechanism（53）Including U-shaped contact（531）And grounding contact（532）, described pull bar one end
With link gear（52）Connection, the other end is with isolating rotary shaft（2231）Connection.
9. the lower earthed switch cabinet of isolation in one kind according to claim 8, it is characterised in that：The earthing mounting bracket
（51）Offer vertical guide groove（511）With S type guide grooves（512）, the link gear（52）It is described including being slidably arranged in respectively
Vertical guide groove（511）With S type guide grooves（512）In the first sliding block and the second sliding block, in addition to connection the first sliding block and second slide
The first connecting rod of block（521）And the second sliding block of connection and contact mechanism（53）Second connecting rod（522）, described pull bar one end with
First connecting rod（521）Connection, the other end is with isolating rotary shaft（2231）Connection.
10. the lower earthed switch cabinet of isolation in one kind according to claim 9, it is characterised in that：The contact mechanism（53）
Also include being rotatably arranged on the earthing mounting bracket（51）On contact rotary shaft（533）And with the contact rotary shaft
（533）The rotating shaft coupling block being fixedly connected（534）, the contact rotary shaft（533）On be provided with grounding copper bar（535）, the U
Type contact（531）And grounding contact（532）Installed in the grounding copper bar（535）On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218139.7A CN107069525A (en) | 2017-04-05 | 2017-04-05 | Isolate lower earthed switch cabinet in one kind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710218139.7A CN107069525A (en) | 2017-04-05 | 2017-04-05 | Isolate lower earthed switch cabinet in one kind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107069525A true CN107069525A (en) | 2017-08-18 |
Family
ID=59602169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710218139.7A Pending CN107069525A (en) | 2017-04-05 | 2017-04-05 | Isolate lower earthed switch cabinet in one kind |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107069525A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599102A (en) * | 2018-01-03 | 2018-09-28 | 长园电力技术有限公司 | A kind of transformer neutral point ground protection switch |
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| CN2772076Y (en) * | 2004-12-28 | 2006-04-12 | 汕头市德通开关有限公司 | Sulfur hexafluoride switch cubicle earthing device |
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2017
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| CN2772076Y (en) * | 2004-12-28 | 2006-04-12 | 汕头市德通开关有限公司 | Sulfur hexafluoride switch cubicle earthing device |
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| CN202276085U (en) * | 2011-11-01 | 2012-06-13 | 大亚电器集团有限公司 | Fully-insulated metal ring net cabinet |
| CN204290152U (en) * | 2014-12-01 | 2015-04-22 | 珠海沃顿电气有限公司 | The switch cubicle of ground structure under a kind of upper isolation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108599102A (en) * | 2018-01-03 | 2018-09-28 | 长园电力技术有限公司 | A kind of transformer neutral point ground protection switch |
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Address after: 519040 middle main building, 6 building, Jin Wan Street, Hongqi Town, Jin Wan District, Zhuhai, Guangdong. Applicant after: Spaceflight Yinshan Electric Co., Ltd. Address before: 519040 middle main building, 6 building, Jin Wan Street, Hongqi Town, Jin Wan District, Zhuhai, Guangdong. Applicant before: ZHUHAI AEROSPACE SCIENCE & TECHNOLOGY INNOVATION INDUSTRIAL CO., LTD. |
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Application publication date: 20170818 |
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