CN109687333A - High-voltage Incoming Cabinet and its working method - Google Patents
High-voltage Incoming Cabinet and its working method Download PDFInfo
- Publication number
- CN109687333A CN109687333A CN201811652183.XA CN201811652183A CN109687333A CN 109687333 A CN109687333 A CN 109687333A CN 201811652183 A CN201811652183 A CN 201811652183A CN 109687333 A CN109687333 A CN 109687333A
- Authority
- CN
- China
- Prior art keywords
- block piece
- hole
- rotating member
- wing
- handle
- 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
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
- H02B11/04—Isolating-contacts, e.g. mountings or shieldings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Abstract
The present invention provides a kind of High-voltage Incoming Cabinet and its working method, the High-voltage Incoming Cabinet includes cabinet door and breaker chamber, and the cabinet door has handle hole, and the High-voltage Incoming Cabinet further comprises: load-bearing part, in the fixed cabinet door of the load-bearing part；The load-bearing part has first wing and second wing being arranged from left to right, and first wing and second wing are respectively provided with through-hole；Block piece, the diameter of the block piece are less than the diameter of the through-hole；The end of the block piece has protrusion, and the diameter of the protrusion is greater than the diameter of the through-hole；The block piece has lock- receiving aperture, and the distance of the end of the separate protrusion of the lock- receiving aperture to block piece is not less than the distance at center of first wing to the handle hole；Lock, the lock is across the lock- receiving aperture.The present invention has many advantages, such as that structure is simple, reliable operation, protecting effect are good.
Description
Technical field
The present invention relates to High-voltage Incoming Cabinets, in particular to the High-voltage Incoming Cabinet and its working method of defencive function.
Background technique
Currently, the basic structure of High-voltage Incoming Cabinet are as follows: cabinet body, handcart, the ground connection of handcart be by fixed cabinet body,
Handcart enters, pulls out in cabinet body, and the earthing or grounding means of cart cooperates with the earthing or grounding means of handcart, separates.When handcart exits, high pressure
High-tension apparatus in incoming line cabinet is exposed, and operator easily accidentally touches, and then leads to personal injury.
Summary of the invention
To solve the deficiency in above-mentioned prior art, the present invention provides it is a kind of have a safety feature, reliable operation
High-voltage Incoming Cabinet.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of High-voltage Incoming Cabinet, the High-voltage Incoming Cabinet include cabinet door and breaker chamber, and the cabinet door has handle hole, institute
Stating has rear wall, left side wall and right side wall in breaker chamber, and the rear wall has the second sets of contacts setting up and down and the
One sets of contacts；The High-voltage Incoming Cabinet further comprises:
Load-bearing part, in the fixed cabinet door of the load-bearing part；The load-bearing part has first wing being arranged from left to right
With second wing, the handle hole, second wing and first wing are set gradually；First wing and second wing are respectively provided with through-hole, institute
The central axis for stating through-hole is less than the radius of the handle hole at a distance from the central axis of the handle hole；
Block piece, the diameter of the block piece are less than the diameter of the through-hole；The end of the block piece has along vertical
The diameter of the protrusion directly extended in the direction of the central axis of the block piece, the protrusion is greater than the straight of the through-hole
Diameter；The block piece has lock- receiving aperture, and the distance of the end of the separate protrusion of the lock- receiving aperture to block piece is not less than described
Distance of first wing to the center of the handle hole；
Lock, the lock is across the lock- receiving aperture.
The object of the invention is also to provide the working method of above-mentioned High-voltage Incoming Cabinet, which is by following
What technical solution was achieved:
According to the working method of above-mentioned High-voltage Incoming Cabinet, the working method the following steps are included:
(A1) block piece is pushed to the right, and block piece passes through the through-hole on first wing and second wing；
(A2) when lock- receiving aperture is between first wing and second wing, lock across the lock- receiving aperture and is locked.
Compared with prior art, the device have the advantages that are as follows:
Using the combination of load-bearing part, block piece, lock- receiving aperture and lock, so that block piece stops illegal operation；In legal behaviour
When making, needs to open and lock and remove, a left side pushes away block piece；
With automatic locking and open function: block piece is stuck between the first protruding portion and the second protruding portion, prevents first
The rotation of rotating member and the second rotating member, namely the unsceptered of the first covering members and the second covering members is prevented, it ensure that contact
The covering of group, improves safety；
Only when handcart enters, driving handle rotation, driving block piece is mobile, so that the first rotating member and the second rotation
Part rotation, so that the first covering members of dragging and the second covering members moving down or moving up, the first sets of contacts and the second sets of contacts be exposed
And matched with handcart, realize automatic opening function；
When handcart exits, the first covering members and the second covering members rely on torsional spring and gravity, automatically move up and down
And playback, cover sets of contacts；Handle return under the action of the spring, blocks the rotation of rotating member, realizes automatic locking function；
First assembly and the second component are the mechanical mechanism mutually to link, are not introduced into electrical components, reliable working performance.
Detailed description of the invention
Referring to attached drawing, the disclosure of the present invention will become more readily understood.Skilled addressee readily understands that: this
It is only used to illustrate the technical scheme of the present invention for a little attached drawings, and is not intended to limit the scope of protection of the present invention.
In figure:
Fig. 1 is the structure diagram of according to embodiments of the present invention 1 High-voltage Incoming Cabinet；
Fig. 2 is another structure diagram of according to embodiments of the present invention 1 High-voltage Incoming Cabinet.
Specific embodiment
Fig. 1-2 and following description describe optional embodiments of the invention to instruct how those skilled in the art implement
It is of the invention with reproducing.In order to teach the technical scheme of the invention, it has simplified or omitted some conventional aspects.Those skilled in the art
It should be understood that the variation or replacement from these embodiments will within the scope of the invention.Those skilled in the art should understand that
The following features can be combined in various ways to form multiple variations of the present invention.As a result, the invention is not limited to it is following can
Embodiment is selected, and is only limited by the claims and their equivalents.
Embodiment 1:
Fig. 1-2 schematically illustrates the structure diagram of the High-voltage Incoming Cabinet of the embodiment of the present invention, as shown in Figs. 1-2, institute
Stating High-voltage Incoming Cabinet includes:
Breaker chamber, the breaker chamber is interior to have rear wall, left side wall and right side wall；
First sets of contacts and the second sets of contacts, second sets of contacts and the first sets of contacts are arranged in described from top to down
Rear wall；
Cabinet door, the cabinet door have handle hole；
Load-bearing part, in the fixed cabinet door of the load-bearing part；The load-bearing part has first wing being arranged from left to right
With second wing, the handle hole, second wing and first wing are set gradually；First wing and second wing are respectively provided with through-hole, institute
The central axis for stating through-hole is less than the radius of the handle hole at a distance from the central axis of the handle hole；
Block piece, the diameter of the block piece are less than the diameter of the through-hole；The end of the block piece has along vertical
The diameter of the protrusion directly extended in the direction of the central axis of the block piece, the protrusion is greater than the straight of the through-hole
Diameter；The block piece has lock- receiving aperture, and the distance of the end of the separate protrusion of the lock- receiving aperture to block piece is not less than described
Distance of first wing to the center of the handle hole；
Lock, the lock is across the lock- receiving aperture；
In order to improve block piece to the blocking effect of handle hole, further, the end of the separate protrusion of the block piece
Portion has the epitaxy part radially extended along block piece.
In order to reduce the complexity and cost of component, further, the load-bearing part includes:
Ontology, the left and right sides outward bending of the ontology are respectively formed first wing and second wing.
In order to improve safety so that sets of contacts is only exposed when handcart enters, further, the High-voltage Incoming Cabinet into
One step includes:
First covering members and the second covering members, such as rectangular sheet structure, first covering members are for covering described first
Sets of contacts, and be separately positioned on guide rail at left and right sides of the first covering members；Second covering members are for covering described second
Sets of contacts, and be separately positioned on guide rail at left and right sides of the second covering members；First covering members and the second covering members are on guide rail
It moves up and down；
First locating part and the second locating part, first locating part is for limiting moving up for first covering members；Institute
The second locating part is stated for limiting moving down for second covering members；
First assembly and the second component, the first assembly and the second component are symmetrically disposed in the right side wall and left side
In right side wall, the second component is arranged in left side wall for wall namely first assembly setting；The first assembly includes:
First rotating member, first rotating member are rotated around first rotating shaft, and the first rotating shaft is fixed on the right side
On wall；The side back to the rear wall of first rotating member has the first protruding portion；The central axis of first rotating shaft is
Horizontal direction；
Second rotating member, second rotating member are rotated around the first rotating shaft, are such as arranged on the first rotating member and the right side
Between side wall；The side back to the rear wall of second rotating member has the second protruding portion；Second protruding portion
The position of bottom end is higher than the position on the top of first protruding portion；
First connector and the second connector, first connector is for connecting first covering members and the first rotation
Part, if both ends rotationally connects with the first covering members, the first rotating member respectively, second connector is used to connect described the
Two covering members and the second rotating member, as both ends are rotationally connect with the second covering members, the second rotating member respectively；
First spanner and the second spanner, first spanner are fixed on first rotating member, and in the first rotation
Axis top, when so that pushing the first spanner backward, first rotating member rotates counterclockwise；Second spanner is fixed on described
On second rotating member, and it is in the first rotation axis lower part, when so that pushing the second spanner backward, second rotating member is clockwise
Rotation；
Block piece, the end of the block piece are stuck between first protruding portion and the second protruding portion, stop first turn
The rotation of moving part and the second rotating member；The block piece is arranged over the guide and can be moved forward and backward；Column is fixed on the resistance
On block piece；
Handle, the handle are rotated around the second shaft, and the central axis of the second shaft is vertical direction, and described second turn
Axis is fixed on the guide part；Have on the handle and be suitable for column mobile through-hole or slot, when the rotatable handle, drives
Dynamic column relatively moves in the through-hole or slot, namely realizes the back-and-forth motion of column, and then before the driving block piece
After move；
One end of spring, the spring is fixed, and the other end is arranged on the handle, the tie point and hand of spring and handle
The operation portion of handle is respectively at the two sides of second shaft, so that handle is under the action of the spring when without external force driving handle
Return realizes the block piece and stops to the rotation of the first rotating member and the second rotating member；
Torsional spring, first rotating member connect torsional spring, and the torsion spring set is in the first rotating shaft.
In order to reduce structure complexity and improve the mobile convenience of covering members, further, first covering members and
The left side of second covering members is arranged on the first guide rail, and the right side setting of first covering members and the second covering members is led second
On rail.
In order to adapt to the back-and-forth motion of block piece and the rotation of handle, further, the guide part includes:
Platform part, having for the platform part are suitable for groove or through-hole that the column is moved forward and backward, have standardized column
It is moved forward and backward；
The top of first bending part, first bending part is connect with the rear end of the platform part；First bending part
With rear end through-hole；
The top of second bending part, second bending part is connect with the front end of the platform part；Second bending part
With front end through-hole, the both ends of the block piece are each passed through the front end through-hole and rear end through-hole.
In order to reduce the occupancy volume of connector and improve the regularity of structure, further, first rotating member
With first rotating arm, the first rotating arm is flexibly connected with first connector；Second rotating member has second
Rotating arm, second rotating arm are flexibly connected with second connector；First connector and/or the second connector are perpendicular
Straight setting.
In order to adapt to the difference of the height of sets of contacts in high-voltage connection cabinet, further, the left side of first covering members
Interconnecting piece is respectively provided with right side；The interconnecting piece covers on guide rail, and has the multiple connecting holes set gradually up and down, and first
One end of connector can be rotatably set on connecting hole；
The left and right side of second covering members is respectively provided with interconnecting piece；The interconnecting piece covers on guide rail, and has
The multiple connecting holes set gradually up and down, one end of the second connector can be rotatably set on connecting hole.
The working method of the High-voltage Incoming Cabinet of the embodiment of the present invention, the working method the following steps are included:
(A1) block piece is pushed to the right, and block piece passes through the through-hole on first wing and second wing；
(A2) when lock- receiving aperture is between first wing and second wing, lock across the lock- receiving aperture and is locked.
Above-mentioned High-voltage Incoming Cabinet has automatic locking and open function, specific implementation are as follows:
(B1) handcart enters in breaker chamber and mobile towards rear wall；
(B2) handcart driving handle rotates clockwise, and handle drives block piece is far from rear wall, the first rotating member and second
The unobstructed part of rotating member stops；
Handcart pushes the first spanner mobile towards rear wall, and the first rotating member rotates counterclockwise, the first connector of driving to
Lower movement, the first covering members move down, and the first exposed sets of contacts is matched with handcart；
Handcart pushes the second spanner mobile towards rear wall, and the second rotating member rotates clockwise, the second connector of driving to
Upper movement, the second covering members move up, and the second exposed sets of contacts is matched with handcart；
(B3) handcart is retracted；
(B4) under the effect of torsion spring, the first rotating member rotates clockwise, and the first covering members move up, to cover the first contact
Group；
Under the effect of gravity, the second covering members move down, to cover the second sets of contacts
Under the action of the spring, handle rotates counterclockwise, and block piece is mobile towards rear wall, and is stuck in the first protruding portion and the
Between two protruding portions, stop the rotation of the first rotating member and the second rotating member.
Embodiment 2:
The application examples of High-voltage Incoming Cabinet according to an embodiment of the present invention and its working method.
In the application examples, the end of the separate protrusion of block piece has the epitaxy part institute radially extended along block piece
Stating load-bearing part includes: ontology, and the left and right sides outward bending of the ontology is respectively formed first wing and second wing；First pulls
Hand, handle and the second spanner are set gradually up and down；Guide part is set, by the back-and-forth motion for being converted to block piece of handle,
In the external force driving handle such as handcart, block piece is offed normal, and realizes automatic opening function；It is exited and the effect of spring in handcart
Under, block piece return realizes automatic locking function；Connection is all had at left and right sides of first covering members and the second covering members
Portion, cylindrical guide rail pass through interconnecting piece, realize moving up and down for covering members, the section of interconnecting piece in the horizontal plane in "] "
Shape；First rotating member and the second rotating member are arranged in first rotating shaft, and second rotating member is arranged at described first turn
Between moving part and right side wall；When block piece is stuck between the first protruding portion and the second protruding portion, the distance of handle to rear wall
Greater than the distance of the first spanner and the second spanner to rear wall.
The working method of the High-voltage Incoming Cabinet of the embodiment of the present invention, wherein the working method of block piece are as follows:
When handcart enters, firstly, simultaneously driving handle moves backward namely handle rotates clockwise for handcart contact, driving
Column relatively moves in the through-hole or slot of handle, meanwhile, column moves in the through-hole or slot of guide part, and after being gradually distance from
Side wall namely block piece are offed normal, and the rotation of the first rotating member and the second rotating member is no longer stopped；Later, handcart is contacted and is driven again
Wrench, the first rotating member and the second rotating member the moving up and down with follower link of rotation, thus dragging the first covering members and
Second covering members move up and down, exposed sets of contacts and handcart matching；
When handcart exits, firstly, under torsional spring and gravity, the first covering members and the second covering members return；Later,
Under the action of the spring, handle automatically rotates in the counterclockwise, and driving column relatively moves in the through-hole or slot of handle, meanwhile,
Column moves in the through-hole or slot of guide part, and moves closer to rear wall namely block piece return, be stuck in the first protruding portion and
Between second protruding portion, stop the rotation of the first rotating member and the second rotating member.
Claims (10)
1. a kind of High-voltage Incoming Cabinet, the High-voltage Incoming Cabinet includes cabinet door and breaker chamber, and the cabinet door has handle hole, described
There is rear wall, left side wall and right side wall, the rear wall has the second sets of contacts and first setting up and down in breaker chamber
Sets of contacts；It is characterized by: the High-voltage Incoming Cabinet further comprises:
Load-bearing part, in the fixed cabinet door of the load-bearing part；The load-bearing part has first wing that is arranged from left to right and the
Two wings, the handle hole, second wing and first wing are set gradually；First wing and second wing are respectively provided with through-hole, described logical
The central axis in hole is less than the radius of the handle hole at a distance from the central axis of the handle hole；
Block piece, the diameter of the block piece are less than the diameter of the through-hole；The end of the block piece have along perpendicular to
The protrusion that the direction of the central axis of the block piece extends, the diameter of the protrusion are greater than the diameter of the through-hole；Institute
Block piece is stated with lock- receiving aperture, the distance of the end of the separate protrusion of the lock- receiving aperture to block piece is not less than first wing
To the distance at the center of the handle hole；
Lock, the lock is across the lock- receiving aperture.
2. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the end of the separate protrusion of the block piece has
There is the epitaxy part radially extended along block piece.
3. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the load-bearing part includes:
Ontology, the left and right sides outward bending of the ontology are respectively formed first wing and second wing.
4. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the High-voltage Incoming Cabinet further comprises:
First covering members and the second covering members, first covering members are for covering first sets of contacts, and the first covering members
The left and right sides be separately positioned on guide rail；Second covering members are for covering second sets of contacts, and the second covering members
The left and right sides be separately positioned on guide rail；
First locating part and the second locating part, first locating part is for limiting moving up for first covering members；Described
Two locating parts are for limiting moving down for second covering members；
First assembly and the second component, the first assembly and the second component are symmetrically disposed in the right side wall and left side wall；
The first assembly includes:
First rotating member, first rotating member are rotated around first rotating shaft, and the first rotating shaft is fixed on the right side wall；
The side back to the rear wall of first rotating member has the first protruding portion；
Second rotating member, second rotating member are rotated around the first rotating shaft；Second rotating member back to after described
The side of side wall has the second protruding portion；The position of the bottom end of second protruding portion is higher than the top of first protruding portion
Position；
First connector and the second connector, first connector are used to connect first covering members and the first rotating member,
Second connector is for connecting second covering members and the second rotating member；
First spanner and the second spanner, first spanner are fixed on first rotating member, and in the first rotation axis
Portion；Second spanner is fixed on second rotating member, and is in the first rotation axis lower part；
Block piece, the end of the block piece are stuck between first protruding portion and the second protruding portion, stop the first rotating member
With the rotation of the second rotating member；The block piece setting is over the guide；Column is fixed on the block piece；
Handle, the handle are rotated around the second shaft, and second shaft is fixed on the guide part；Have on the handle
Have and be suitable for column mobile through-hole or slot, when the rotatable handle, the block piece is driven to be moved forward and backward；
One end of spring, the spring is fixed, and the other end is arranged on the handle, the tie point and handle of spring and handle
Operation portion is respectively at the two sides of second shaft；
Torsional spring, first rotating member connect torsional spring, and the torsion spring set is in the first rotating shaft.
5. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the second rotating member is in a rotating member and the right side
Between side wall.
6. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the guide part includes:
Platform part, having for the platform part are suitable for groove or through-hole that the column is moved forward and backward；
The top of first bending part, first bending part is connect with the rear end of the platform part；First bending part has
Rear end through-hole；
The top of second bending part, second bending part is connect with the front end of the platform part；Second bending part has
Front end through-hole, the both ends of the block piece are each passed through the front end through-hole and rear end through-hole.
7. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: first rotating member has first rotating arm,
The first rotating arm is flexibly connected with first connector；Second rotating member have the second rotating arm, described second
Rotating arm is flexibly connected with second connector.
8. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: on first spanner, handle and the second spanner
Under set gradually.
9. High-voltage Incoming Cabinet according to claim 1, it is characterised in that: the left and right side of first covering members is distinguished
With interconnecting piece；The interconnecting piece covers on guide rail, and has the multiple connecting holes set gradually up and down, and the one of the first connector
End can be rotatably set on connecting hole.
10. the working method of -9 any High-voltage Incoming Cabinets according to claim 1, the working method includes following step
It is rapid:
(A1) block piece is pushed to the right, and block piece passes through the through-hole on first wing and second wing；
(A2) when lock- receiving aperture is between first wing and second wing, lock across the lock- receiving aperture and is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652183.XA CN109687333A (en) | 2018-12-31 | 2018-12-31 | High-voltage Incoming Cabinet and its working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652183.XA CN109687333A (en) | 2018-12-31 | 2018-12-31 | High-voltage Incoming Cabinet and its working method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687333A true CN109687333A (en) | 2019-04-26 |
Family
ID=66191720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811652183.XA Pending CN109687333A (en) | 2018-12-31 | 2018-12-31 | High-voltage Incoming Cabinet and its working method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687333A (en) |
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| CN206004197U (en) * | 2016-08-31 | 2017-03-08 | 扬州北辰电气设备有限公司 | High-voltage switch cubicle handcart anti-misoperation locking device |
| CN206432576U (en) * | 2017-01-13 | 2017-08-22 | 山东泰开真空开关有限公司 | A kind of switch cabinet panel door interlock |
| CN207021579U (en) * | 2017-05-27 | 2018-02-16 | 平高集团有限公司 | Ring main unit and its cabinet |
| US20180152007A1 (en) * | 2016-11-29 | 2018-05-31 | Eaton Corporation | Motor control center units with multi-purpose shutter cams and related units |
| CN109066362A (en) * | 2018-09-13 | 2018-12-21 | 河南中和电气有限公司 | A kind of power distribution cabinet and its application method |
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|---|---|---|---|---|
| CN201315412Y (en) * | 2008-12-12 | 2009-09-23 | 上海纳杰电气成套有限公司 | High voltage switch cabinet with ground switch padlock device |
| CN203452495U (en) * | 2013-07-15 | 2014-02-26 | 湖南雁能森源电力设备有限公司 | Device for improving protection level of switching operation hole of switch cabinet |
| CN203966883U (en) * | 2014-07-12 | 2014-11-26 | 长城电器集团有限公司 | A kind of ground connection valve interlocking |
| CN104167682A (en) * | 2014-08-06 | 2014-11-26 | 安徽龙波电气有限公司 | Circuit breaker handcart and earthing switch interlocking device |
| CN105513859A (en) * | 2016-01-21 | 2016-04-20 | 浙江临高电气实业有限公司 | Protective structure and switch cabinet with same |
| CN205583492U (en) * | 2016-04-25 | 2016-09-14 | 国家电网公司 | Cubical switchboard handcart handle hole keeper type anti -misoperation device |
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| US20180152007A1 (en) * | 2016-11-29 | 2018-05-31 | Eaton Corporation | Motor control center units with multi-purpose shutter cams and related units |
| CN206432576U (en) * | 2017-01-13 | 2017-08-22 | 山东泰开真空开关有限公司 | A kind of switch cabinet panel door interlock |
| CN207021579U (en) * | 2017-05-27 | 2018-02-16 | 平高集团有限公司 | Ring main unit and its cabinet |
| CN109066362A (en) * | 2018-09-13 | 2018-12-21 | 河南中和电气有限公司 | A kind of power distribution cabinet and its application method |
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