CN207320691U - A kind of current limliting vacuum circuit breaker ring main unit - Google Patents
A kind of current limliting vacuum circuit breaker ring main unit Download PDFInfo
- Publication number
- CN207320691U CN207320691U CN201720889077.8U CN201720889077U CN207320691U CN 207320691 U CN207320691 U CN 207320691U CN 201720889077 U CN201720889077 U CN 201720889077U CN 207320691 U CN207320691 U CN 207320691U
- Authority
- CN
- China
- Prior art keywords
- current limliting
- circuit breaker
- ring main
- main unit
- drive link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
A kind of current limliting vacuum circuit breaker ring main unit, including cabinet are the utility model is related to, pole, the vacuum interrupter being arranged in pole, and current limliting permanent-magnet operating mechanism are provided with cabinet；Current limliting permanent-magnet operating mechanism includes drive link, thrust disc, coil and close/open machine；Drive link movement is driven when close/open machine is run, drive link drives the moving conductive rod of vacuum interrupter to complete divide-shut brake movement；Make vacuum interrupter quick disjunction short-circuit current in 2ms, it also can timely and effectively recover power grid power supply at the same time, identification electric network fault property can be gone using its reclosing function again to recover power grid power supply, and disjunction short-circuit current is greatly and reusable, and the normal folding load current of vacuum circuit breaker, overload current, the function of short circuit current flow and reclosing all have, also solve ring main unit should timely and effectively disjunction short-circuit current, timely and effectively recover the technical barrier of power grid power supply again.
Description
Technical field
Ring main unit technical field is the utility model is related to, more specifically to a kind of current limliting vacuum circuit breaker ring main unit.
Background technology
With the development of domestic economy, the capacity requirement of ring network power supply system constantly increases, and ring main unit is used in power grid
Quantity is also increasing, this depends primarily upon the outstanding advantage of ring main unit, it is with simple in structure and compact, small, behaviour
Make flexibly, interlocking is reliable, cabinet type expands the features such as facilitating, suitable for switching station, box-type substation, residential quarters, industrial and mining enterprises,
The places such as megastore, airport, subway, railway, chemical industry, while can also meet the requirement of user's different technologies scheme.However, with
The capacity for ring network power supply system continues to increase, and short trouble happens occasionally in power grid, and short-circuit current gives power equipment band
Come impact harm increased, when in power grid occur short trouble when, ring main unit should timely and effectively disjunction short trouble electricity
Stream and the timely and effectively power supply of recovery power grid, at present, it is big that the inlet-outlet line ring main unit used in domestic ring network power supply system is divided into two
Class：One kind is vacuum circuit breaker ring main unit, it can timely and effectively disjunction short-circuit current and timely and effectively utilization coincidence
Lock function goes identification electric network fault property to recover power grid power supply, but the time length of vacuum circuit breaker disjunction short-circuit current
Some power equipments (such as transformer's type) in power grid so cannot timely and effectively be provided protection by (being more than 25ms)；Two classes are
Vacuum load switch+limiting fuse ring main unit, its using limiting fuse can in 2ms disjunction short-circuit current spy
Property, all power equipments in power grid can be timely and effectively protected, but after each disjunction short-circuit current of limiting fuse, all need
Want manual reversion, this is outdated under the situation of current intensive electricity consumption, should timely and effectively disjunction short-circuit current, again
Timely and effectively to recover power grid power supply, this is a technical barrier of ring main unit, annoyings the two of ring network power supply system always
Secondary distribution equipment industry.
Utility model content
The technical problems to be solved in the utility model is, for the drawbacks described above of the prior art, there is provided a kind of current limliting is true
Empty breaker ring main unit, with solve in the prior art vacuum circuit breaker cannot in 2ms the technology of disjunction short-circuit current it is difficult
Topic, also solve ring main unit should timely and effectively disjunction short-circuit current, timely and effectively recover the skill of power grid power supply again
Art problem.
Technical solution is used by the utility model solves its technical problem：
Construct a kind of current limliting vacuum circuit breaker ring main unit, including cabinet；Wherein, be provided with the cabinet pole,
The vacuum interrupter being arranged in the pole, and current limliting permanent-magnet operating mechanism；The current limliting permanent-magnet operating mechanism includes
The drive link for driving the moving conductive rod divide-shut brake of the vacuum interrupter, the thrust disc being fixedly connected with the drive link, control
The coil of the thrust disc operation, and close/open machine；The drive link is driven to move during the close/open machine operation, institute
Stating drive link drives the moving conductive rod of the vacuum interrupter to complete divide-shut brake movement；There is short circuit event in power grid in the coil
By electricity during barrier, make to induce vortex in the thrust disc and produce electromagnetic repulsion force, so as to drive the drive link to move.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the close/open machine includes and the biography
Dynamic iron core that lever is fixedly connected, the lower coil of the control dynamic iron core movement, keep the dilute of the vacuum interrupter divide-shut brake
Native permanent magnet.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the current limliting permanent-magnet operating mechanism further includes
Mounting shell；The the first installation chamber for installing the coil and the thrust disc is provided with the mounting shell, and described in installation
Second installation chamber of dynamic iron core, the lower coil and the rare-earth permanent magnet；The drive link runs through first installation cavity
Room and the second installation chamber.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the drive link deviates from the vacuum extinction
Room one end is provided with spring retainer block；Drive link section surface between the mounting shell lower end and the spring retainer block
It is arranged with tripping spring；The tripping spring keeps the separating brake of the vacuum interrupter with the rare-earth permanent magnet collective effect.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, it is provided with mounting bracket in the cabinet；It is described
The multiple fixed columns being fixedly connected with the mounting bracket are provided with mounting shell.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the drive link and the vacuum interrupter
Moving conductive rod connected by insulated tension pole；The insulated tension pole surface is arranged with full skirt；The pole inner wall is provided with
Anti-tracking full skirt corresponding with the full skirt.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the current limliting vacuum circuit breaker ring main unit is also
Including upper cable vault, lower cable vault, capacitance storing up electricity room and control room；Set in the capacitance storing up electricity room the promising coil by
Electricity and the capacitance first of storing up electricity, and for the lower coil by electricity and the capacitance second of storing up electricity；It is provided with the control room described in control
Coil and the powered intelligent controller of the lower coil.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the pole includes powering on described
The upper wire outlet seat that cable house cable annex is electrically connected, and the lower wire outlet seat coordinated with the lower cable vault；The lower wire outlet seat leads to
Docking casing is crossed to be electrically connected with the lower cable house cable annex.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, the moving conductive rod of the vacuum interrupter with
The lower wire outlet seat is electrically connected by being flexible coupling；The docking casing includes insulation sleeve, the cable in the insulation sleeve, and
The contact being electrically connected with the cable outside the insulation sleeve；The lower wire outlet seat is provided with matched with the contact shape
Link slot；The link slot inner wall is provided with canted coil spring fingertip, and the annular groove of the installation canted coil spring fingertip.
Current limliting vacuum circuit breaker ring main unit described in the utility model, wherein, it is provided with the insulation sleeve described in covering
The insulation cover plate of lower wire outlet seat, the insulation cover plate and the pole screw interlocking.
The beneficial effects of the utility model are：Control drive link to run by close/open machine, and then drive vacuum to go out
The moving conductive rod operation of arc chamber, completes divide-shut brake action, keeps gate-dividing state or "on" position by rare-earth permanent magnet, works as power grid
When there is short trouble, coil is made to induce vortex in thrust disc and produces electromagnetic repulsion force, so as to drive drive link to transport by electricity
It is dynamic, and then make vacuum interrupter quick disjunction short-circuit current in 2ms, while also can timely and effectively recover power grid confession
Electricity, and identification electric network fault property can be gone using its reclosing function to recover power grid power supply, and disjunction short-circuit current is big
With it is reusable, and the normal folding load current of vacuum circuit breaker, overload current, the function of short circuit current flow and reclosing all have
Have, therefore current limliting vacuum circuit breaker ring main unit combines the defencive function of conventional multiple types ring main unit, its characteristic, which meets, works as front ring
The technical requirements of net electric power system, also solve ring main unit should timely and effectively disjunction short-circuit current, have in time again
The technical barrier for recovering power grid power supply of effect.
Brief description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below in conjunction with attached drawing
And the utility model is described in further detail for embodiment, drawings in the following description are only that the part of the utility model is implemented
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other accompanying drawings：
Fig. 1 is the current limliting vacuum circuit breaker ring main unit side structure schematic diagram of the utility model preferred embodiment；
Fig. 2 is the current limliting vacuum circuit breaker ring main unit positive structure schematic of the utility model preferred embodiment；
Fig. 3 is that the current limliting vacuum circuit breaker ring main unit pole of the utility model preferred embodiment docks casing with abnormal shape
Junction enlarged drawing；
Fig. 4 is the current limliting vacuum circuit breaker ring main unit current limliting permanent magnet mechanism structure amplification of the utility model preferred embodiment
Figure；
Fig. 5 is the current limliting vacuum circuit breaker ring main unit electrical principle block diagram of the utility model preferred embodiment.
Embodiment
In order to make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality
Technical solution in new embodiment carries out clear, complete description, it is clear that described embodiment is the portion of the utility model
Divide embodiment, rather than whole embodiments.Embodiment based on the utility model, those of ordinary skill in the art are not paying
All other embodiments obtained on the premise of creative work, belong to the scope of protection of the utility model.
The current limliting vacuum circuit breaker ring main unit of the utility model preferred embodiment as shown in Figure 1, at the same time refering to Fig. 2, Fig. 3,
Fig. 4 and Fig. 5, including cabinet 1, are provided with pole 10, the vacuum interrupter being arranged in pole 10 11 in cabinet 1,
With current limliting permanent-magnet operating mechanism 12；Current limliting permanent-magnet operating mechanism 12 includes the moving conductive rod divide-shut brake for driving vacuum interrupter 11
Drive link 120, be fixedly connected with drive link 120 thrust disc 121, control thrust disc 121 run coil 122, and point
Switching-on mechanism 13；Driving drive link 120 moves when close/open machine 13 is run, and drive link 120 drives the dynamic of vacuum interrupter 11
Conducting rod completes divide-shut brake movement；Coil 122, by electricity, makes to induce whirlpool in thrust disc 121 when short trouble occurs in power grid
Flow and produce electromagnetic repulsion force, so as to drive drive link 120 to move；Drive link 120 is controlled to run by close/open machine 13, and then
The moving conductive rod operation of vacuum interrupter 11 is driven, completes divide-shut brake action, when short trouble occurs in power grid, coil 122
By electricity, make to induce vortex in thrust disc 121 and produce electromagnetic repulsion force, so as to drive drive link 120 to move, complete fast in 2ms
Fast separating brake action, and then make the quick disjunction short-circuit current in 2ms of vacuum interrupter 11, while also can be timely and effectively extensive
Telegram in reply nets power supply, and identification electric network fault property can be gone using its reclosing function to recover power grid power supply, and disjunction short circuit event
Hinder that electric current is greatly and reusable, and the normal folding load current of vacuum circuit breaker, overload current, short circuit current flow and reclosing
Function all has, therefore current limliting vacuum circuit breaker ring main unit combines the defencive function of conventional multiple types ring main unit, its characteristic symbol
The technical requirements of looped network electric power system before being fated, also solve ring main unit should timely and effectively disjunction short-circuit current, again
Timely and effectively to recover the technical barrier of power grid power supply.
As shown in Figure 1, Figure 2 and Figure 4, close/open machine 13 includes dynamic iron core 130, the control being fixedly connected with drive link 120
Brake lower coil 131, the rare-earth permanent magnet 132 of holding 11 divide-shut brake of vacuum interrupter that iron core 130 moves；Work as vacuum circuit breaker
During normal divide-shut brake, lower coil 131 is driven drive link 120 to make 11 normal division of vacuum interrupter by electric drive dynamic iron core 130
Lock, while opening and closing state is kept by rare-earth permanent magnet 132, ensure the normal divide-shut brake work of vacuum circuit breaker.
As shown in Figure 1, Figure 2 and Figure 4, current limliting permanent-magnet operating mechanism 12 further includes mounting shell 123；Set in mounting shell 123
There is the first installation chamber 124 of installation coil 122 and thrust disc 121, and installation dynamic iron core 130, lower coil 131 and rare earth are forever
Second installation chamber 125 of magnet 132；Drive link 120 installs chamber 125 through the first installation chamber 124 and second；It is so that anti-
Short circuit and normal divide-shut brake are independent of each other between each other, while compact-sized, and globality is strong, and assembling is very convenient, easy to criticize
Amount production.
As shown in Figure 1, Figure 2 and Figure 4, drive link 120 is provided with spring retainer block 126 away from 11 one end of vacuum interrupter；
Drive link 120 is located at section surface between 123 lower end of mounting shell and spring retainer block 126 and is arranged with tripping spring 127；Tripping spring
127 keep the separating brake of vacuum interrupter 11 with 132 collective effect of rare-earth permanent magnet；Ensure occurring by tripping spring 127
It can more quickly cause 11 separating brake of vacuum interrupter when short-circuit, while can also accelerate opening velocity during normal separating brake, be not powered on shape
Vacuum interrupter 11 remains off-state under state, improves assembling security, compact-sized in addition, good integrity, assembling side
Just, easy to mass production.
As depicted in figs. 1 and 2, mounting bracket 14 is provided with cabinet 1；It is provided with mounting shell 123 and is fixed with mounting bracket 14
Multiple fixed columns 128 of connection；Easy to assembling and setting, good integrity.
As depicted in figs. 1 and 2, drive link 120 is connected with the moving conductive rod of vacuum interrupter 11 by insulated tension pole 110；
110 surface of insulated tension pole is arranged with full skirt 111；10 inner wall of pole is provided with anti-tracking full skirt corresponding with full skirt 111
100；By having larger insulation clear distance between 110 vacuum interrupter 11 of insulated tension pole and current limliting permanent-magnet operating mechanism 12；
By full skirt 111 and anti-tracking full skirt 100, avoid and occur climbing electric situation.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, current limliting vacuum circuit breaker ring main unit further includes cable vault 2, lower cable
Room 3, capacitance storing up electricity room 4 and control room 5；The interior promising coil 122 of setting in capacitance storing up electricity room 4 capacitance first 41 of storing up electricity by electricity,
With for lower coil 131 by electricity and the capacitance second 40 of storing up electricity；Control coil 122 and lower coil 131 are provided with control room 5 by electricity
Intelligent controller 50；When short trouble occurs for power grid, sampling current transformer rises fault current instantaneous value and electric current
Rate value is transmitted to intelligent controller 50 and is detected, and more than just pulse signal is sent to driving first after setting, driving first passes through pre-
The capacitance first 41 of charging, discharges to coil 122, to produce a duration as several milliseconds of pulse current；Work as vacuum
During the normal divide-shut brake of breaker, intelligent controller 50 sends pulse signal to driving second, drives capacitance second of the second by precharge
40, discharge to lower coil 131, to produce pulse current of the duration as several ms；Herein, its other party can also be passed through
Formula is carried out to being monitored respectively when normal divide-shut brake and short trouble, and controls coil by electricity and lower coil by electricity.
As shown in Figure 1, Figure 2 and Figure 3, pole 10 on being electrically connected with upper 2 inner cable annex 20 of cable vault including going out
Line seat 101, and the lower wire outlet seat 102 coordinated with lower cable vault 3；Lower wire outlet seat 102 is by docking in casing 6 and lower cable vault 3
Cable accessory 30 is electrically connected；It is compact-sized, and overall width is smaller so that cabinet can accomplish smaller size smaller.
As shown in Figure 1, Figure 2 and Figure 3, the moving conductive rod of vacuum interrupter 11 passes through 112 electricity that are flexible coupling with lower wire outlet seat 102
Connection；Docking casing 6 includes insulation sleeve 60, the cable (not shown) in insulation sleeve 60, and (is not shown in figure with cable
Show) it is electrically connected the contact 61 outside insulation sleeve 60；Lower wire outlet seat 102 is provided with the link slot 103 with 61 form fit of contact；
103 inner wall of link slot is provided with canted coil spring fingertip 104, and the annular groove 105 of installation canted coil spring fingertip 104；Structure is tight
Gather, and overall width is smaller so that cabinet can accomplish smaller size smaller；Pass through canted coil spring fingertip 104 so that lower wire outlet seat is with touching
There are multiple contact points during head connection, add conductivity, reduce contact resistance resistance value, temperature rise is relatively low, enhances current capacity,
Rated current, dynamic and thermal stability electric current can be carried, meanwhile, can reduce lower wire outlet seat structural volume.
As shown in Figure 1, Figure 2 and Figure 3, the insulation cover plate 62 for covering lower wire outlet seat 102, insulating cover are provided with insulation sleeve 60
Plate 62 and 10 screw interlocking of pole；Abnormity docks the tightness of casing after ensureing connection, while it also avoid occurring climbing electricity
Situation.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Claims (10)
1. a kind of current limliting vacuum circuit breaker ring main unit, including cabinet；It is characterized in that, be provided with the cabinet pole,
The vacuum interrupter being arranged in the pole, and current limliting permanent-magnet operating mechanism；The current limliting permanent-magnet operating mechanism includes
The drive link for driving the moving conductive rod divide-shut brake of the vacuum interrupter, the thrust disc being fixedly connected with the drive link, control
The coil of the thrust disc operation, and close/open machine；The drive link is driven to move during the close/open machine operation, institute
Stating drive link drives the moving conductive rod of the vacuum interrupter to complete divide-shut brake movement；There is short circuit event in power grid in the coil
By electricity during barrier, make to induce vortex in the thrust disc and produce electromagnetic repulsion force, so as to drive the drive link to move.
2. current limliting vacuum circuit breaker ring main unit according to claim 1, it is characterised in that the close/open machine include with
Dynamic iron core that the drive link is fixedly connected, the lower coil of the control dynamic iron core movement, keep the vacuum interrupter division
The rare-earth permanent magnet of lock.
3. current limliting vacuum circuit breaker ring main unit according to claim 2, it is characterised in that the current limliting permanent-magnet operating mechanism
Further include mounting shell；The the first installation chamber for installing the coil and the thrust disc, and peace are provided with the mounting shell
Fill the second installation chamber of the dynamic iron core, the lower coil and the rare-earth permanent magnet；The drive link runs through described first
Chamber and the second installation chamber are installed.
4. current limliting vacuum circuit breaker ring main unit according to claim 3, it is characterised in that the drive link is away from described true
Empty arc-chutes one end is provided with spring retainer block；The drive link is between the mounting shell lower end and the spring retainer block
Section surface is arranged with tripping spring；The tripping spring keeps the vacuum interrupter with the rare-earth permanent magnet collective effect
Separating brake.
5. current limliting vacuum circuit breaker ring main unit according to claim 3, it is characterised in that installation is provided with the cabinet
Frame；The multiple fixed columns being fixedly connected with the mounting bracket are provided with the mounting shell.
6. according to any current limliting vacuum circuit breaker ring main units of claim 1-5, it is characterised in that the drive link and institute
The moving conductive rod for stating vacuum interrupter is connected by insulated tension pole；The insulated tension pole surface is arranged with full skirt；The sealing pole
Column wall is provided with anti-tracking full skirt corresponding with the full skirt.
7. current limliting vacuum circuit breaker ring main unit according to claim 2, it is characterised in that the current limliting vacuum circuit breaker ring
Net cabinet further includes cable vault, lower cable vault, capacitance storing up electricity room and control room；In the capacitance storing up electricity room set it is promising it is described on
Coil by electricity and the capacitance first of storing up electricity, and for the lower coil by electricity and the capacitance second of storing up electricity；Control is provided with the control room
Make the coil and the powered intelligent controller of the lower coil.
8. current limliting vacuum circuit breaker ring main unit according to claim 7, it is characterised in that the pole includes and institute
State the upper wire outlet seat of cable house cable annex electrical connection, and the lower wire outlet seat coordinated with the lower cable vault；Go out under described
Line seat is electrically connected by docking casing with the lower cable house cable annex.
9. current limliting vacuum circuit breaker ring main unit according to claim 8, it is characterised in that the dynamic of the vacuum interrupter is led
Electric pole is electrically connected with the lower wire outlet seat by being flexible coupling；The docking casing includes insulation sleeve, in the insulation sleeve
Cable, and the contact outside the insulation sleeve is electrically connected with the cable；The lower wire outlet seat is provided with and the contact shape
The matched link slot of shape；The link slot inner wall is provided with canted coil spring fingertip, and the annular of the installation canted coil spring fingertip
Groove.
10. current limliting vacuum circuit breaker ring main unit according to claim 9, it is characterised in that be provided with the insulation sleeve
Cover the insulation cover plate of the lower wire outlet seat, the insulation cover plate and the pole screw interlocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720889077.8U CN207320691U (en) | 2017-07-21 | 2017-07-21 | A kind of current limliting vacuum circuit breaker ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720889077.8U CN207320691U (en) | 2017-07-21 | 2017-07-21 | A kind of current limliting vacuum circuit breaker ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207320691U true CN207320691U (en) | 2018-05-04 |
Family
ID=62433839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720889077.8U Active CN207320691U (en) | 2017-07-21 | 2017-07-21 | A kind of current limliting vacuum circuit breaker ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207320691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293988A (en) * | 2017-07-21 | 2017-10-24 | 深圳市赛斯电气技术有限公司 | A kind of current limliting vacuum circuit breaker ring main unit |
-
2017
- 2017-07-21 CN CN201720889077.8U patent/CN207320691U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293988A (en) * | 2017-07-21 | 2017-10-24 | 深圳市赛斯电气技术有限公司 | A kind of current limliting vacuum circuit breaker ring main unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102243957B (en) | Moulded case circuit breaker with residual current protection | |
| CN107293988A (en) | A kind of current limliting vacuum circuit breaker ring main unit | |
| CN105280430A (en) | 10kV solar intelligent pole-mounted vacuum circuit breaker | |
| CN207320691U (en) | A kind of current limliting vacuum circuit breaker ring main unit | |
| CN204966375U (en) | Vacuum circuit breaker on intelligence post | |
| CN201562961U (en) | AC generator neutral point integrated cabinet | |
| CN201725755U (en) | Molded case circuit breaker with residual current protection | |
| CN204270998U (en) | Be applied to the combination circuit breaker equipment in intelligent grid | |
| CN111200272A (en) | Intelligent plastic shell type circuit breaker and control method thereof | |
| CN206991977U (en) | A kind of blocking device for preventing power transformation operation back brake maloperation | |
| CN101984539B (en) | Magnetic blow-out switch operation controller | |
| CN205723423U (en) | A kind of Mobile vacuum load switch and fuse combined electric apparatus | |
| CN201717604U (en) | Intelligent vacuum feeder switch control system with bistable double-coil permanent magnet mechanism | |
| CN201860175U (en) | Operation controller for field suppression switch | |
| CN204760332U (en) | Circuit breaker operating device controlgear and control box thereof | |
| CN207165485U (en) | A kind of small size vacuum contactor for ring main unit | |
| CN205911828U (en) | Circuit breaker control circuit | |
| CN203911453U (en) | An inlet wire cabinet control system | |
| CN106410741A (en) | Self-power transmission device of universal circuit breaker | |
| CN201860057U (en) | Circuit control device of low voltage distribution cabinet | |
| CN202996684U (en) | Permanent magnet vacuum feeder switch used in mining explosion suppression type mobile transformer station | |
| CN101699682B (en) | Breaker for preventing wire break | |
| CN206060167U (en) | A kind of controller of intelligent leakage circuit breaker | |
| CN105788951A (en) | Protection apparatus and protection method for solid-closure indoor high-voltage vacuum circuit breaker | |
| CN204407860U (en) | The control circuit of circuit breaker Undertension shunt opening integrated electrical apparatus release |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |