CN110211839A - A kind of three-phase box type vacuum breaker - Google Patents
A kind of three-phase box type vacuum breaker Download PDFInfo
- Publication number
- CN110211839A CN110211839A CN201910616416.9A CN201910616416A CN110211839A CN 110211839 A CN110211839 A CN 110211839A CN 201910616416 A CN201910616416 A CN 201910616416A CN 110211839 A CN110211839 A CN 110211839A
- Authority
- CN
- China
- Prior art keywords
- contact
- armature card
- insulating frame
- box type
- yoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims description 33
- 239000000919 ceramic Substances 0.000 claims description 24
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 19
- 238000000034 method Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- -1 carbonic acid diformazan Ester Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a kind of three-phase box type vacuum breakers, include Insulating frame, conductive plate, vacuum interrupter, contact screw rod, excess of stroke spring, insulation arm, armature card, travel switch, yoke, shunt opening coil, closing coil, retaining hook and controller are provided in Insulating frame；Insulation arm is laterally arranged, the bottom of one end connection armature card of insulation arm, idler wheel is provided at the top of armature card, the side of armature card is arranged in yoke, shunt opening coil, closing coil and retaining hook are arranged at yoke towards on the side of armature card, and the position of retaining hook and idler wheel cooperation is provided with U-lag.Vacuum circuit breaker of the invention eliminates no-voltage trip device, while also having taken away separating brake turning engine hook, belongs to level-one tripping mechanism.To simplifying mechanism, the amount of parts used is less, and the permanent magnet for also overcoming permanent magnet mechanism circuit-breaker demagnetizes after a period of use, and the phenomenon of the failure refused to close, refused point, thus it can compare favourably with permanent-magnet breaker.
Description
Technical field
The invention belongs to release unit technical fields, and in particular to a kind of three-phase box type vacuum breaker.
Background technique
Vacuum circuit breaker is gained the name due to the dielectric of contact gap is all high vacuum after its arc-extinguishing medium and arc extinguishing,
Have the advantages that it is small in size, light-weight, be suitable for frequent operation, arc extinguishing does not have to maintenance, using more universal in power distribution network.Very
Empty breaker is 3~10kV, the indoor distribution in 50Hz three-phase alternating current system, for industrial and mining enterprises, power plant, substation
Middle protection and control as electrical equipment is used, especially suitable for requiring the use field of non-oil ultra high vacuum system, few maintenance and frequent operation
Institute, breaker are configurable on middle-placed switch cabinet, double-layer cabinet, fix in cabinet and use as control and protection high voltage electric equipment.
Vacuum circuit breaker in the prior art, not only part is more for electromagnetic operating mechanism, but also frictional resistance is larger, thus
Keep its fault point more, affects vacuum circuit breaker service life.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of three-phase box type vacuum breaker
Problem.
To achieve the above object, the invention provides the following technical scheme: a kind of three-phase box type vacuum breaker, includes exhausted
Edge frame, be provided in the Insulating frame conductive plate, vacuum interrupter, contact screw rod, excess of stroke spring, insulation arm, armature card,
Travel switch, yoke, shunt opening coil, closing coil, retaining hook and controller, the conductive plate, vacuum interrupter, contact screw rod
It is located at side in Insulating frame, the armature card, travel switch, yoke, shunt opening coil, closing coil, holding with excess of stroke spring
Hook and controller are located at the other side in Insulating frame；
The upper end of the conductive plate is stretched out outside Insulating frame, is connected at the top of the lower end of the conductive plate and vacuum interrupter
It connects, the top of the bottom connection contact screw rod of the vacuum interrupter, the contact screw rod runs through one end of insulation arm, the touching
Head screw jacket is equipped with excess of stroke spring, and the top of the excess of stroke spring is connect with the top of contact screw rod, the excess of stroke spring
Bottom and the top of insulation arm connect, and the insulation arm is laterally arranged, the bottom of the other end connection armature card of the insulation arm,
The bottom of the travel switch and armature card is cooperatively connected, and idler wheel is provided at the top of the armature card, and the yoke setting exists
The side of armature card, the shunt opening coil, closing coil and retaining hook are arranged at yoke towards on the side of armature card, described
The position of retaining hook and idler wheel cooperation is provided with U-lag, and the controller is located at the top of yoke.
Preferably, the vacuum interrupter includes ceramic tube, upper cover plate, lower cover plate, static conductive rod and moving conductive rod, institute
State the top that upper cover plate is mounted on ceramic tube, the lower cover plate is mounted on the bottom of ceramic tube, the top of the static conductive rod with
The bottom of conductive plate connection, the static conductive rod through upper cover plate and stretches in ceramic tube, and the bottom of the static conductive rod is set
It is equipped with static contact, the top of the moving conductive rod through lower cover plate and stretches in ceramic tube, sets at the top of the moving conductive rod
It is equipped with moving contact, the bottom of the moving conductive rod is connect with contact screw rod, static contact adaptation corresponding with above and below moving contact.
Preferably, it is provided with contact base on the static contact and moving contact, the contact base is the cup for being provided with helicla flute
Shape contact base.
Preferably, bellows is sealed between the moving conductive rod and ceramic tube.
Preferably, shielding case is both provided with around the static contact, moving contact and bellows.
Preferably, the making material of the static contact and moving contact is CuCr.
Preferably, the making material of the ceramic tube is aluminium oxide electronic ceramics.
Preferably, the Insulating frame is closed box formula structure, and the making material of the Insulating frame is carbonic acid diformazan
Ester.
The utility model has the advantages that
(1) a kind of three-phase box type vacuum breaker of the invention, it is exactly in armature that retaining hook, which is designed as rolling friction mode,
Plate upper end is equipped with an idler wheel, is rotated by a certain angle by closing coil energization Attraction strap moving armature plate, rolls idler wheel thereon
Move in the U-lag of retaining hook and it is self-locking clasp, realize mechanical keep.The other end of retaining hook is by shunt opening coil and manual brake separating
Device controls, and makes retaining hook rotation tripping, reaches separating brake purpose.Vacuum circuit breaker of the invention eliminates no-voltage trip dress
It sets, while also having taken away separating brake turning engine hook, belong to level-one tripping mechanism.To simplifying mechanism, the amount of parts used compared with
Few, the permanent magnet for also overcoming permanent magnet mechanism circuit-breaker demagnetizes after a period of use, and refuse to close, the failure refused point shows
As, thus it can compare favourably with permanent-magnet breaker.
(2) the dynamic/static contact material of a kind of three-phase box type vacuum breaker of the invention, vacuum interrupter uses CuCr50,
Its mechanical strength with higher, inoxidizability, corrosion resistance and electric conductivity.It has also been rationally designed on structure of contact terminal and has been provided with spiral shell
The cup-shaped contact base of spin slot, when contact has electric current to pass through, contact base will generate longitudinal magnetic field, and this electromagnetic field, distribution is
It is even reasonable, stable, greatly improve its connecting-disconnecting function.
(3) a kind of three-phase box type vacuum breaker of the invention, Insulating frame are designed to closed box formula structure, can be by portion
Part all encapsulates inside it, to improve the insulation performance of breaker.Insulating frame is with high-intensitive DMC plastic material pressure
Type is made, there is very high mechanical strength and compressive resistance.Not only appearance is beautiful for the breaker of this seal case formula structure, and
And also can effectively prevent the intrusion of different sundries, to improve the stability and reliability of breaker splitting or integrating lock.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of three-phase box type vacuum breaker of the present invention.
Fig. 2 is the structural schematic diagram of vacuum interrupter in the present invention.
In figure: 1- Insulating frame, 2- conductive plate, 3- vacuum interrupter, 31- ceramic tube, 32- upper cover plate, 33- lower cover plate,
34- static conductive rod, 35- moving conductive rod, 36- static contact, 37- moving contact, 38- contact base, 39- bellows, 4- contact screw rod, 5-
Insulation arm, 6- armature card, 7- travel switch, 8- yoke, 9- shunt opening coil, 10- closing coil, 11- retaining hook, 12- controller,
13- idler wheel, 14-U shape slot, 15- excess of stroke spring.
Specific embodiment
Embodiments of the present invention will be further described below with reference to the accompanying drawings.
As shown in Figs. 1-2, a kind of three-phase box type vacuum breaker includes Insulating frame 1, is set in the Insulating frame 1
Be equipped with conductive plate 2, vacuum interrupter 3, contact screw rod 4, excess of stroke spring 15, insulation arm 5, armature card 6, travel switch 7, yoke 8,
Shunt opening coil 9, closing coil 10, retaining hook 11 and controller 12, the conductive plate 2, vacuum interrupter 3, contact screw rod 4 and super
Journey spring 15 is located at side in Insulating frame 1, the armature card 6, travel switch 7, yoke 8, shunt opening coil 9, closing coil 10,
Retaining hook 11 and controller 12 are located at the other side in Insulating frame 1；
The upper end of the conductive plate 2 is stretched out outside Insulating frame 1, the lower end of the conductive plate 2 and the top of vacuum interrupter 3
Connection, the top of the bottom connection contact screw rod 4 of the vacuum interrupter 3, the contact screw rod 4 run through one end of insulation arm 5,
It is arranged with excess of stroke spring 15 outside the contact screw rod 4, the top of the excess of stroke spring 15 is connect with the top of contact screw rod 4, institute
The bottom for stating excess of stroke spring 15 is connect with the top of insulation arm 5, the laterally setting of insulation arm 5, the other end of the insulation arm 5
The bottom of armature card 6 is connected, the bottom of the travel switch 7 and armature card 6 is cooperatively connected, the top setting of the armature card 6
There is idler wheel 13, the side of armature card 6 is arranged in the yoke 8, and the shunt opening coil 9, closing coil 10 and retaining hook 11 are all provided with
It sets in yoke 8 towards on the side of armature card 6, the position that the retaining hook 11 cooperates with idler wheel 13 is provided with U-lag 14, described
Controller 12 is located at the top of yoke 8.
The vacuum interrupter 3 includes ceramic tube 31, upper cover plate 32, lower cover plate 33, static conductive rod 34 and moving conductive rod
35, the upper cover plate 32 is mounted on the top of ceramic tube 31, and the lower cover plate 33 is mounted on the bottom of ceramic tube 31, described quiet to lead
The top of electric pole 34 is connect with conductive plate 2, and the bottom of the static conductive rod 34 through upper cover plate 32 and stretches in ceramic tube 31,
The bottom of the static conductive rod 34 is provided with static contact 36, and the top of the moving conductive rod 35 through lower cover plate 33 and stretches to pottery
In porcelain tube 31, the top of the moving conductive rod 35 is provided with moving contact 37, and the bottom of the moving conductive rod 34 and contact screw rod 4 connect
It connects, the adaptation corresponding with about 37 moving contact of static contact 36.
Contact base 38 is provided on the static contact 36 and moving contact 37, the contact base 38 is the cup for being provided with helicla flute
Shape contact base；The cup-shaped contact base for being provided with helicla flute, when contact has electric current to pass through, contact have been rationally designed on structure of contact terminal
Seat will generate longitudinal magnetic field, and this electromagnetic field is evenly distributed reasonable, stable, greatly improves its connecting-disconnecting function.
Bellows 39 is sealed between the moving conductive rod 35 and upper cover plate 32.
Shielding case is both provided with around the static contact 36, moving contact 37 and bellows 39.
The making material of the static contact 36 and moving contact 37 be CuCr50, mechanical strength with higher, inoxidizability,
Corrosion resistance and electric conductivity.
The making material of the ceramic tube 31 is aluminium oxide electronic ceramics, and aluminium oxide electronic ceramics can adapt to meet true completely
All requirements of empty arc-chutes, it has good bending strength, vacuum compactness, the stringent coefficient of expansion and high reliability,
Metallizing temperature is not needed very high, antioxygenic property is good.
The Insulating frame 1 is closed box formula structure, and the making material of the Insulating frame 1 is dimethyl carbonate.
Original Insulating frame 1 is designed by still open type, so that the portion of moveable conduction flexible cord and operating mechanism
Divide part exposed outside, if flexible cord touches other auxiliary products, it is easy to cause short trouble.Different sundries also can be very
It easily invades inside operating mechanism, the component of movement is made to be obstructed or stuck, cause breaker to refuse to close, the failure refused point shows
As.The Insulating frame 1 of the present embodiment is designed to closed box formula structure, can all encapsulate component inside it, to improve
The insulation performance of breaker.Insulating frame 1 is to use high-intensitive DMC plastic material compression moulding, has very high mechanical strength
And compressive resistance.Not only appearance is beautiful for the breaker of this seal case formula structure, but also can effectively prevent invading for different sundries
Enter, to improve the stability and reliability of breaker splitting or integrating lock.
The improvement of the electromagnetic operating mechanism part of the present embodiment vacuum circuit breaker is done primarily directed to 11 device of retaining hook
One biggish change.Pervious breaker uses two-stage tripping mechanism, is attracted when closing coil is powered, make armature with thereon
Insulation connecting lever turns an angle, and by super-travel spring, contact screw rod drives the contact closure of vacuum interrupter.At this point,
The cutter head of armature upper end has slid into the hook groove of retaining hook, and the other end of retaining hook is clasped by separating brake shaft, realizes mechanical holding,
Separating brake shaft is controlled by shunt opening coil, under-voltage coil and manual tripping device, is made the rotation tripping of separating brake shaft, is reached the mesh of separating brake
's.Not only part is more for this electromagnetic operating mechanism, but also frictional resistance is larger, to keep its fault point more, affecting makes
Use the service life.The retaining hook 11 of the present embodiment is designed as rolling friction mode, is exactly equipped with an idler wheel in 6 upper end of armature card
13, it is rotated by a certain angle by 10 energization Attraction strap moving armature plate 6 of closing coil, idler wheel 13 thereon is made to be rolled to retaining hook 11
It is self-locking in U-lag 14 to clasp, realize mechanical keep.The other end of retaining hook 11 by shunt opening coil 9 and manual switching-off device Lai
Control makes the rotation tripping of retaining hook 11, reaches separating brake purpose.The breaker of the present embodiment eliminates no-voltage trip device, simultaneously
Separating brake turning engine hook has also been taken away, level-one tripping mechanism is belonged to.To simplify mechanism, the amount of parts used is less, improves
Breaker afterwards not only has all features of original electromagnetic operating mechanism, but also has the characteristics that permanent magnet mechanism part is few,
The permanent magnet for also overcoming permanent magnet mechanism circuit-breaker demagnetizes after a period of use, and the phenomenon of the failure refused to close, refused point, because
And it can compare favourably with permanent-magnet breaker.
The controller 12 is used to control the closing coil 10 of this breaker and the on-off of opening coil electric current, using microcomputer
Control mode.
Vacuum interrupter 3, it is the core component of breaker main circuit, makes vacuum extinction by the operating mechanism of breaker
The closure of dynamic/static contact in room 3 completes the conducting and disjunction of the main circuit current of breaker with separating.When static contact 36 exists
When closing a floodgate under operating mechanism effect, the conducting of dynamic/static contact closed path, otherwise when dynamic/static contact charges separating brake, it is generated between contact
Vacuum arc, vacuum arc are maintained by the metallic vapour being evaporated on contact, and when electric current is close to zero, metallic vapour will
It is spread around quickly close to stopping evaporation, while plus the plasma of vacuum arc, electric arc is just off, and contact gap is very
Become insulator fastly, then electric current is just broken.
The vacuum interrupter 3 of the present embodiment uses more advanced complete one-step seal-exhaust production method, by vacuum interrupter 3
All part direct-assemblings are then primary in a vacuum furnace to complete exhaust, toast, the process of soldered seal, technique at one integral piece
Process: envelope row-technique is seasoned in cleaning plating-homogeneous tube assembly-furnace-and it stores and dries dress.
Specific embodiments of the present invention are described in detail above, but it is merely an example, the present invention is simultaneously unlimited
It is formed on above description specific embodiment.To those skilled in the art, the equivalent modifications and replace that any couple of present invention carries out
In generation, is also all among scope of the invention.Therefore, without departing from the spirit and scope of the invention made by equal transformation and repair
Change, all covers within the scope of the present invention.
Claims (8)
1. a kind of three-phase box type vacuum breaker, it is characterised in that:
Include Insulating frame (1), is provided with conductive plate (2), vacuum interrupter (3), contact screw rod in the Insulating frame (1)
(4), excess of stroke spring (15), insulation arm (5), armature card (6), travel switch (7), yoke (8), shunt opening coil (9), closing coil
(10), retaining hook (11) and controller (12), the conductive plate (2), vacuum interrupter (3), contact screw rod (4) and excess of stroke spring
(15) it is located at Insulating frame (1) interior side, the armature card (6), yoke (8), shunt opening coil (9), is closed a floodgate at travel switch (7)
Coil (10), retaining hook (11) and controller (12) are located at Insulating frame (1) interior other side；
Insulating frame (1) is stretched out outside in the upper end of the conductive plate (2), lower end and vacuum interrupter (3) of the conductive plate (2)
Top connection, the top of bottom connection contact screw rod (4) of the vacuum interrupter (3), the contact screw rod (4) is through insulation
One end of arm (5), the contact screw rod (4) are arranged with excess of stroke spring (15) outside, the top of the excess of stroke spring (15) and contact
The top of screw rod (4) connects, and the bottom of the excess of stroke spring (15) is connect with the top of insulation arm (5), and the insulation arm (5) is horizontal
To setting, the bottom of the other end of the insulation arm (5) connection armature card (6), the travel switch (7) and armature card (6)
Bottom is cooperatively connected, and is provided with idler wheel (13) at the top of the armature card (6), and the yoke (8) is arranged the one of armature card (6)
Side, the shunt opening coil (9), closing coil (10) and retaining hook (11) are arranged at side of the yoke (8) towards armature card (6)
On, the position of the retaining hook (11) and idler wheel (13) cooperation is provided with U-lag (14), and the controller (12) is located at yoke
(8) top.
2. a kind of three-phase box type vacuum breaker according to claim 1, it is characterised in that:
The vacuum interrupter (3) includes ceramic tube (31), upper cover plate (32), lower cover plate (33), static conductive rod (34) and moves
Conducting rod (35), the upper cover plate (32) are mounted on the top of ceramic tube (31), and the lower cover plate (33) is mounted on ceramic tube
(31) top of bottom, the static conductive rod (34) is connect with conductive plate (2), and the bottom of the static conductive rod (34) is through upper
Cover board (32) simultaneously stretches in ceramic tube (31), and the bottom of the static conductive rod (34) is provided with static contact (36), and described move is led
The top of electric pole (35) is through lower cover plate (33) and stretches in ceramic tube (31), is provided at the top of the moving conductive rod (35)
The bottom of moving contact (37), the moving conductive rod (34) is connect with contact screw rod (4), the static contact (36) and moving contact (37)
Corresponding adaptation up and down.
3. a kind of three-phase box type vacuum breaker according to claim 2, it is characterised in that:
It is provided with contact base (38) on the static contact (36) and moving contact (37), the contact base (38) is to be provided with helicla flute
Cup-shaped contact base.
4. a kind of three-phase box type vacuum breaker according to claim 2, it is characterised in that:
Bellows (39) are sealed between the moving conductive rod (35) and ceramic tube (31).
5. a kind of three-phase box type vacuum breaker according to claim 4, it is characterised in that:
Shielding case is both provided with around the static contact (36), moving contact (37) and bellows (39).
6. a kind of three-phase box type vacuum breaker according to claim 2, it is characterised in that:
The making material of the static contact (36) and moving contact (37) is CuCr50.
7. a kind of three-phase box type vacuum breaker according to claim 2, it is characterised in that:
The making material of the ceramic tube (31) is aluminium oxide electronic ceramics.
8. a kind of three-phase box type vacuum breaker according to claim 1, it is characterised in that:
The Insulating frame (1) is closed box formula structure, and the making material of the Insulating frame (1) is dimethyl carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616416.9A CN110211839A (en) | 2019-07-09 | 2019-07-09 | A kind of three-phase box type vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910616416.9A CN110211839A (en) | 2019-07-09 | 2019-07-09 | A kind of three-phase box type vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110211839A true CN110211839A (en) | 2019-09-06 |
Family
ID=67797009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910616416.9A Pending CN110211839A (en) | 2019-07-09 | 2019-07-09 | A kind of three-phase box type vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110211839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477519A (en) * | 2020-04-27 | 2020-07-31 | 李凤玲 | Vacuum circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392767Y (en) * | 2009-04-22 | 2010-01-27 | 无锡市蓝虹电子有限公司 | Permanent magnet high-current vacuum contactor |
| CN202332712U (en) * | 2011-11-24 | 2012-07-11 | 浙江新安江开关有限公司 | Opening mechanism for vacuum contactor |
| CN203536287U (en) * | 2013-11-22 | 2014-04-09 | 平高集团智能电气有限公司 | Low-voltage permanent magnetic vacuum contactor |
| CN209785830U (en) * | 2019-07-09 | 2019-12-13 | 景德镇永鑫真空电器有限公司 | Three-phase box type vacuum circuit breaker |
-
2019
- 2019-07-09 CN CN201910616416.9A patent/CN110211839A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201392767Y (en) * | 2009-04-22 | 2010-01-27 | 无锡市蓝虹电子有限公司 | Permanent magnet high-current vacuum contactor |
| CN202332712U (en) * | 2011-11-24 | 2012-07-11 | 浙江新安江开关有限公司 | Opening mechanism for vacuum contactor |
| CN203536287U (en) * | 2013-11-22 | 2014-04-09 | 平高集团智能电气有限公司 | Low-voltage permanent magnetic vacuum contactor |
| CN209785830U (en) * | 2019-07-09 | 2019-12-13 | 景德镇永鑫真空电器有限公司 | Three-phase box type vacuum circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111477519A (en) * | 2020-04-27 | 2020-07-31 | 李凤玲 | Vacuum circuit breaker |
| CN111477519B (en) * | 2020-04-27 | 2022-03-04 | 上海振能信息科技有限公司 | Vacuum circuit breaker |
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