CN106571266A - Pole-mounted vacuum circuit breaker and control method of voltage tripper - Google Patents
Pole-mounted vacuum circuit breaker and control method of voltage tripper Download PDFInfo
- Publication number
- CN106571266A CN106571266A CN201610979798.8A CN201610979798A CN106571266A CN 106571266 A CN106571266 A CN 106571266A CN 201610979798 A CN201610979798 A CN 201610979798A CN 106571266 A CN106571266 A CN 106571266A
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- voltage
- type
- electrical apparatus
- apparatus release
- type electrical
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention discloses a pole-mounted vacuum circuit breaker. A voltage tripper is arranged inside a circuit breaker body. The voltage type of the voltage tripper is a first voltage type or a second voltage type. When the voltage type of the voltage tripper is the second voltage type, the voltage tripper abuts on an opening mechanism of an operating mechanism of the circuit breaker and drives the opening mechanism to act. Through the technical scheme of the invention, when the primary or secondary loop of a power distribution system is in an over-voltage, under-voltage or no-voltage state, especially in a power-off state, the voltage tripper drives the circuit breaker to be opened reliably. Thus, the safety and reliability of the circuit breaker are improved. The invention further discloses a control method of a voltage tripper.
Description
Technical field
The present invention relates to electroporation field, more particularly to a kind of vacuum circuit breaker, while the invention further relates to
Plant the control method of voltage-type electrical apparatus release.
Background technology
Vacuum circuit breaker is gained the name because the dielectric of contact gap after its arc-extinguishing medium and arc extinguishing is all fine vacuum；Vacuum
Chopper have the advantages that small volume, it is lightweight, suitable for frequent operation, arc extinguishing without maintenance, using more in power distribution network
Popularization.At present, mainly or for traditional grid equipment upgraded in upgrade of rural power grids and changed, whole rural area
About 2/3 investment in electric network reconstruction is on low-pressure end distribution power transmission and transforming equipment.
Present inventor has found that vacuum circuit breaker of the prior art is all powered during the present invention is realized
Work, if distribution system once, secondary circuit is when there is over-pressed, under-voltage or decompression state, particularly dead electricity, may result in true
Empty chopper is unable to automatic brake separating.
Therefore, the security reliability for how improving vacuum circuit breaker is just particularly important.
The content of the invention
The control method of a kind of vacuum circuit breaker and voltage-type electrical apparatus release is embodiments provided, is true on post
A kind of device of empty chopper additional designs so that voltage not in the working range of vacuum circuit breaker, vacuum circuit breaker
Directly separating brake, solves the problems, such as that vacuum circuit breaker security reliability is low in prior art, and the vacuum circuit breaker includes disconnected
Road device body, breaker operation mechanism and the voltage-type electrical apparatus release arranged inside the breaker body, the voltage-type
The voltage type of electrical apparatus release includes first voltage type and second voltage type, wherein：
The voltage-type electrical apparatus release is used for when the voltage type of the voltage-type electrical apparatus release is the second voltage type,
The voltage-type electrical apparatus release contradicts and drives the brake separating mechanism action with the brake separating mechanism of the breaker operation mechanism.
In some embodiments, spring is provided with heretofore described voltage-type electrical apparatus release, for making the voltage
The attracted position of the voltage-type electrical apparatus release is moved and departed to the dynamic iron core of type electrical apparatus release, contradicts to described point in the dynamic iron core
The brake separating mechanism action is driven after brake mechanism.
In some embodiments, heretofore described voltage-type electrical apparatus release is additionally operable to the electricity when the voltage-type electrical apparatus release
When pressure type is the first voltage type, the dynamic iron core of the voltage-type electrical apparatus release separates and is maintained at the brake separating mechanism
The attracted position.
In some embodiments, travel switch is provided with heretofore described voltage-type electrical apparatus release, is divided for providing
Lock signal.
In some embodiments, heretofore described first voltage type is the work electricity in the voltage-type electrical apparatus release
Voltage in the range of pressure, the second voltage type is the voltage in the operating voltage range of the voltage-type electrical apparatus release.
Accordingly, the embodiment of the present invention additionally provides a kind of control method of voltage-type electrical apparatus release, is applied to comprising as above
In described vacuum circuit breaker, the method includes：
When the voltage type of the voltage-type electrical apparatus release is first voltage type, the dynamic iron core of the voltage-type electrical apparatus release
It is maintained at the attracted position of the voltage-type electrical apparatus release；
When the voltage type of the voltage-type electrical apparatus release is second voltage type, the dynamic iron core is moved and departs from described
Attracted position, the dynamic iron core drives the brake separating mechanism action of the breaker operation mechanism.
In some embodiments, the present invention is provided with spring on the voltage-type electrical apparatus release, when the voltage-type takes off
When the voltage type of button device is second voltage type, the method is specially：
The spring drives the dynamic iron core motion, drives after the dynamic iron core is contradicted to the brake separating mechanism described
Brake separating mechanism action.
In some embodiments, the present invention is provided with travel switch on the voltage-type electrical apparatus release, when the voltage
When the voltage type of type electrical apparatus release is first voltage type, the method is specially：
The dynamic iron core moves to the attracted position and is maintained at the attracted position, and the dynamic iron core drives described dynamic
Bindiny mechanism's motion on iron core, the bindiny mechanism makes the travel switch action to after the travel switch in conflict.
In some embodiments, heretofore described travel switch provides the sub-gate signal of the chopper.
In some embodiments, heretofore described first voltage type is the work electricity in the voltage-type electrical apparatus release
Voltage in the range of pressure, the second voltage type is the voltage in the operating voltage range of the voltage-type electrical apparatus release.
Compared with prior art, the Advantageous Effects of the technical scheme that the embodiment of the present invention is proposed include：
Voltage-type electrical apparatus release is internally provided with the breaker body, the voltage type of the voltage-type electrical apparatus release includes
First voltage type and second voltage type, wherein：The voltage-type electrical apparatus release is used for the voltage when the voltage-type electrical apparatus release
When type is the second voltage type, the voltage-type electrical apparatus release is contradicted simultaneously with the brake separating mechanism of the breaker operation mechanism
Drive the brake separating mechanism action.By applying technical scheme, when distribution system once, secondary circuit occurred
When pressure, under-voltage or decompression state, particularly dead electricity when, chopper reliability separating brake is driven by voltage-type electrical apparatus release, raising resolves
The security reliability of road device.
Other features and advantages of the present invention will be illustrated in the following description, also, the partly change from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realizing and obtain in book, claims and accompanying drawing.
Below by drawings and Examples, technical scheme is described in further detail.
Description of the drawings
In order to be illustrated more clearly that technical scheme, embodiment will be described below needed for the accompanying drawing to be used
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, general for this area
For logical technical staff, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
A kind of structural representation of vacuum circuit breaker that Fig. 1 is proposed by the embodiment of the present invention；
A kind of structural representation of voltage-type electrical apparatus release that Fig. 2 is proposed by the embodiment of the present invention；
A kind of workflow diagram of vacuum circuit breaker that Fig. 3 is proposed by the embodiment of the present invention；
A kind of structural representation of the state of vacuum circuit breaker one that Fig. 4 is proposed by the embodiment of the present invention；
A kind of structural representation of another state of vacuum circuit breaker that Fig. 5 is proposed by the embodiment of the present invention.
Marginal data
1：Breaker body 31：Dynamic iron core
2：Breaker operation mechanism 32：Spring
3：Voltage-type electrical apparatus release 33：Closing coil
21：The push pedal 34 being connected with separating brake semiaxis system：Hold-in winding
22：Separating brake semiaxis in breaker operation mechanism are 35：Plate
36：Travel switch
Specific embodiment
In view of the problem being previously mentioned in the application background technology, the invention provides a kind of vacuum circuit breaker,
A voltage-type electrical apparatus release being connected with brake separating mechanism is provided with inside breaker body, when external voltage does not take off in the voltage-type
When in the operating voltage range of button device, the action of voltage-type electrical apparatus release simultaneously drives brake separating mechanism action, so as to vacuum circuit breaker
Reliable separating brake, to solve prior art in distribution system once, secondary circuit there is over-pressed, under-voltage or decompression state when, it is special
When being not dead electricity, the low problem of the security reliability of vacuum circuit breaker.
As shown in figure 1, a kind of structural representation of the vacuum circuit breaker proposed by the embodiment of the present invention, main bag
Include breaker body 1, breaker operation mechanism 2 and the voltage-type electrical apparatus release 3 being arranged on inside breaker body 1.
Just as described in background the invention, in prior art, vacuum circuit breaker is all live line work, if distribution system
Once, when over-pressed, under-voltage or decompression state, particularly dead electricity occurs in secondary circuit, may result in vacuum circuit breaker can not be automatic
, there is potential safety hazard in separating brake, reduce the security reliability of vacuum circuit breaker.
In view of above the problems of the prior art, present applicant proposes a kind of vacuum circuit breaker.For pole vacuum
A kind of device of chopper additional designs so that voltage is not in the working range of vacuum circuit breaker, vacuum circuit breaker is straight
Separating brake is connect, solves the problems, such as that vacuum circuit breaker security reliability is low in prior art.Specifically inside the breaker body 1
Voltage-type electrical apparatus release 3 is provided with, the voltage-type electrical apparatus release 3 is connected with the brake separating mechanism of breaker operation mechanism 2, works as external voltage
When cannot meet voltage-type electrical apparatus release 3 and working, the action of voltage-type electrical apparatus release 3 simultaneously drives the brake separating mechanism of breaker operation mechanism 2
Action, makes vacuum circuit breaker reliability separating brake, so, even if voltage-type electrical apparatus release 3 can still make vacuum in uncharged situation
Chopper efficiently accomplishes sub-switching operation, improves the security reliability of chopper.
In an embodiment of the present invention, the voltage type of voltage-type electrical apparatus release 3 includes first voltage type and second voltage
Type, wherein：When the voltage type of voltage-type electrical apparatus release 3 is second voltage type, voltage-type electrical apparatus release 3 and chopper actuating
The brake separating mechanism of mechanism contradicts and drives brake separating mechanism action.
It should be noted that for defect present in prior art, the present invention is when the voltage class of voltage-type electrical apparatus release 3
When type is first voltage type, the dynamic iron core 31 of voltage-type electrical apparatus release 3 separates and is maintained at attracted position with brake separating mechanism.
Specifically, the first voltage type of voltage-type electrical apparatus release 3 of the invention is the running voltage in voltage-type electrical apparatus release 3
In the range of voltage, that is, when voltage is in the operating voltage range of voltage-type electrical apparatus release 3 (during including power-off)；Voltage-type is threaded off
The second voltage type of device 3 is the voltage in the operating voltage range of voltage-type electrical apparatus release 3, that is, voltage is not in voltage
(including during power-off) when in the operating voltage range of type electrical apparatus release 3.So, when distribution system once, secondary circuit occur it is over-pressed, deficient
When pressure or decompression state, chopper reliability separating brake can be driven by voltage-type electrical apparatus release 3.
In a preferred embodiment of the invention, spring 32 is additionally provided with voltage-type electrical apparatus release 3, for taking off voltage-type
The motion of dynamic iron core 31 of button device 3 and the attracted position of out-off voltage type electrical apparatus release 3, after dynamic iron core 31 contradicts brake separating mechanism
Drive brake separating mechanism action.Specifically, first it is voltage when the voltage type of voltage-type electrical apparatus release 3 is second voltage type
The dead electricity of hold-in winding 34 of type electrical apparatus release 3, causes magnetic field and retentivity to disappear, and spring 32 is moved and drives dynamic iron core 31 1 to start shipment
It is dynamic, after being 22 push pedals 21 being connected to the separating brake semiaxis with brake separating mechanism in conflict, continue to drive push pedal 21 to move, now, push away
It is 22 motions that plate 21 drives separating brake semiaxis, so as to complete the sub-switching operation of vacuum circuit breaker.
In a preferred embodiment of the invention, when the voltage type of voltage-type electrical apparatus release 3 is first voltage type, protect
Hold coil 34 it is electric after produce magnetic field and make dynamic iron core 31 be maintained at attracting state (if voltage-type electrical apparatus release 3 is initial powered
When, being that closing coil 33 is powered moves dynamic iron core 31, and finally by hold-in winding 34 makes dynamic iron core 31 be maintained at adhesive shape
State).
In a preferred embodiment of the invention, travel switch 36 is additionally provided with voltage-type electrical apparatus release 3, for providing
Sub-gate signal, specifically, the trip switch 36 can provide under-voltage signal.
Compared with prior art, the Advantageous Effects of the technical scheme that the embodiment of the present invention is proposed include：
Voltage-type electrical apparatus release is internally provided with the breaker body, the voltage type of the voltage-type electrical apparatus release includes
First voltage type and second voltage type, wherein：The voltage-type electrical apparatus release is used for the voltage when the voltage-type electrical apparatus release
When type is the second voltage type, the voltage-type electrical apparatus release is contradicted simultaneously with the brake separating mechanism of the breaker operation mechanism
Drive the brake separating mechanism action.By applying technical scheme, when distribution system once, secondary circuit occurred
When pressure, under-voltage or decompression state, particularly dead electricity when, chopper reliability separating brake is driven by voltage-type electrical apparatus release, raising resolves
The security reliability of road device.
Specifically used scene in below in conjunction with the present invention, is carried out clear, complete to the technical scheme in the present invention
Description, it is clear that described embodiment is a part of embodiment of the present invention, rather than the embodiment of whole.Based on the present invention
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belongs to the scope of protection of the invention.
The structural representation of a kind of voltage-type electrical apparatus release proposed in conjunction with the embodiment of the present invention shown in Fig. 2, to this
The technical scheme of invention is illustrated.As shown in figure 3, a kind of work of the vacuum circuit breaker proposed by the embodiment of the present invention
Make flow chart, specifically, the embodiment is comprised the steps of：
Step 301, when the voltage-type electrical apparatus release voltage type be first voltage type when, the voltage-type electrical apparatus release
Dynamic iron core be maintained at the attracted position of the voltage-type electrical apparatus release.
In this step, be mainly consider the external world voltage in the operating voltage range of voltage-type electrical apparatus release 3 when, move ferrum
Core 31 is maintained at attracting state, will not trigger the brake separating mechanism action of chopper, when external voltage cannot not thread off in voltage-type
When in the operating voltage range of device 3, dynamic iron core 31 departs from attracted position and effectively makes breaker open operation.
In specific implement scene, the present invention is also provided with travel switch 36 on voltage-type electrical apparatus release 3, and the trip is opened
36 sub-gate signals for being mainly to provide chopper are closed, specifically, attracted position is moved in dynamic iron core 31 and is maintained at adhesive position
Put, dynamic iron core 31 drives the plate 35 being connected with dynamic iron core 31 to move, when plate 35 makes travel switch in conflict to after travel switch 36
36 actions, and keep fitting with travel switch 36, the voltage type for being illustrated in figure 4 voltage-type electrical apparatus release 3 is first voltage class
Working condition during type.
Step 302, when the voltage type of the voltage-type electrical apparatus release is second voltage type, the dynamic iron core is moved simultaneously
Depart from the attracted position, the dynamic iron core drives the brake separating mechanism action of the breaker operation mechanism.
In this step, it is (bag when mainly considering extraneous voltage not in the operating voltage range of voltage-type electrical apparatus release 3
When including voltage-type 3 power-off of electrical apparatus release), attracted position is moved and departed to dynamic iron core 31, and dynamic iron core 31 drives breaker operation mechanism
Brake separating mechanism action.
In specific implement scene, the present invention is also provided with spring 32 on voltage-type electrical apparatus release 3, specifically, works as electricity
When the voltage type of die mould electrical apparatus release 3 is second voltage type, spring 32 drives dynamic iron core 31 to move, and contradicts in dynamic iron core 31 and arrives
It is after 22 push pedals 21 being connected, to continue to press on push pedal 21 and move with the separating brake semiaxis of brake separating mechanism, now, push pedal 21 will band
Dynamic separating brake semiaxis are 22 motions, are finally completed separating brake action, and the voltage type for being illustrated in figure 5 voltage-type electrical apparatus release 3 is second
Working condition during voltage type.
Compared with prior art, the Advantageous Effects of the technical scheme that the embodiment of the present invention is proposed include：
Voltage-type electrical apparatus release is internally provided with the breaker body, the voltage type of the voltage-type electrical apparatus release includes
First voltage type and second voltage type, wherein：The voltage-type electrical apparatus release is used for the voltage when the voltage-type electrical apparatus release
When type is the second voltage type, the voltage-type electrical apparatus release is contradicted simultaneously with the brake separating mechanism of the breaker operation mechanism
Drive the brake separating mechanism action.By applying technical scheme, when distribution system once, secondary circuit occurred
When pressure, under-voltage or decompression state, particularly dead electricity when, chopper reliability separating brake is driven by voltage-type electrical apparatus release, raising resolves
The security reliability of road device.
It should be noted that above-mentioned specific embodiment simply represents a kind of specific implement scene, this can not be represented
The scheme of invention is only restricted in this, any those skilled in the art in the case of without creative work it is conceivable that it is excellent
Change scheme should all fall into the protection domain of the present embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that the embodiment of the present invention
Can be realized by hardware, it is also possible to realize by the mode of software plus necessary general hardware platform.Based on such reason
Solution, the technical scheme of the embodiment of the present invention can be embodied in the form of software product, and the software product can be stored in one
Individual non-volatile memory medium (can be CD-ROM, USB flash disk, portable hard drive etc.) in, including some instructions are used so that a meter
Calculate machine equipment (can be personal computer, server, or network equipment etc.) and perform the embodiment of the present invention each implement scene
Described method.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow process is not necessarily implemented necessary to the embodiment of the present invention.
It will be appreciated by those skilled in the art that the module in the device in implement scene can according to implement scene describe into
Row is distributed in the device of implement scene, it is also possible to carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can merge into a module, it is also possible to be further split into multiple submodule.
The embodiments of the present invention are for illustration only, do not represent the quality of implement scene.
Disclosed above is only that the several of the embodiment of the present invention are embodied as scene, but, the embodiment of the present invention not office
It is limited to this, the changes that any person skilled in the art can think of should all fall into the business of the embodiment of the present invention and limit scope.
Claims (10)
1. a kind of vacuum circuit breaker, including breaker body, breaker operation mechanism, it is characterised in that in the open circuit
Device body interior is provided with voltage-type electrical apparatus release, and the voltage type of the voltage-type electrical apparatus release includes first voltage type and second
Voltage type, wherein：
The voltage-type electrical apparatus release is used for when the voltage type of the voltage-type electrical apparatus release is the second voltage type, described
Voltage-type electrical apparatus release contradicts and drives the brake separating mechanism action with the brake separating mechanism of the breaker operation mechanism.
2. vacuum circuit breaker as claimed in claim 1, it is characterised in that be provided with bullet on the voltage-type electrical apparatus release
Spring, the dynamic iron core for making the voltage-type electrical apparatus release is moved and departs from the attracted position of the voltage-type electrical apparatus release, described
Dynamic iron core contradicts and the brake separating mechanism action is driven to after the brake separating mechanism.
3. vacuum circuit breaker as claimed in claim 1, it is characterised in that the voltage-type electrical apparatus release is additionally operable to when described
When the voltage type of voltage-type electrical apparatus release is the first voltage type, dynamic iron core and the separating brake of the voltage-type electrical apparatus release
Mechanism separates and is maintained at the attracted position.
4. the vacuum circuit breaker as described in any one of claim 1-3, it is characterised in that set on the voltage-type electrical apparatus release
Travel switch is equipped with, for providing sub-gate signal.
5. the vacuum circuit breaker as described in any one of claim 1-3, it is characterised in that the first voltage type be
Voltage in the operating voltage range of the voltage-type electrical apparatus release, the second voltage type is beyond the voltage-type electrical apparatus release
Operating voltage range in voltage.
6. a kind of control method of voltage-type electrical apparatus release, is applied to break comprising the pole vacuum described in any one of claim 1-3
Road device, it is characterised in that the method includes：
When the voltage type of the voltage-type electrical apparatus release is first voltage type, the dynamic iron core of the voltage-type electrical apparatus release keeps
In the attracted position of the voltage-type electrical apparatus release；
When the voltage type of the voltage-type electrical apparatus release is second voltage type, the adhesive is moved and departed to the dynamic iron core
Position, the dynamic iron core drives the brake separating mechanism action of the breaker operation mechanism.
7. control method as claimed in claim 6, it is characterised in that be provided with spring on the voltage-type electrical apparatus release, when
When the voltage type of the voltage-type electrical apparatus release is second voltage type, the method is specially：
The spring drives the dynamic iron core motion, contradicts in the dynamic iron core and drives the separating brake to after the brake separating mechanism
Mechanism action.
8. control method as claimed in claim 6, it is characterised in that be provided with stroke on the voltage-type electrical apparatus release and open
Close, when the voltage type of the voltage-type electrical apparatus release is first voltage type, the method is specially：
The dynamic iron core moves to the attracted position and is maintained at the attracted position, and the dynamic iron core drives the dynamic iron core
On bindiny mechanism motion, the bindiny mechanism contradict the travel switch action is made to after the travel switch.
9. control method as claimed in claim 8, it is characterised in that the travel switch provides the separating brake letter of the chopper
Number.
10. the control method as described in any one of claim 6-8, it is characterised in that the first voltage type is described
Voltage in the operating voltage range of voltage-type electrical apparatus release, the second voltage type is the work beyond the voltage-type electrical apparatus release
Make the voltage in voltage range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979798.8A CN106571266B (en) | 2016-11-08 | 2016-11-08 | Control method of vacuum circuit breaker on column and voltage type release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610979798.8A CN106571266B (en) | 2016-11-08 | 2016-11-08 | Control method of vacuum circuit breaker on column and voltage type release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571266A true CN106571266A (en) | 2017-04-19 |
| CN106571266B CN106571266B (en) | 2020-08-04 |
Family
ID=58540400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610979798.8A Active CN106571266B (en) | 2016-11-08 | 2016-11-08 | Control method of vacuum circuit breaker on column and voltage type release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106571266B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994008348A1 (en) * | 1992-09-25 | 1994-04-14 | Siemens Aktiengesellschaft | Electromagnetically operated switching device |
| CN201134387Y (en) * | 2007-12-20 | 2008-10-15 | 林建平 | Trip mechanism for vacuum switch |
| CN203553028U (en) * | 2013-06-07 | 2014-04-16 | 安徽鑫龙电器股份有限公司 | Under-voltage and no-voltage protection device for vacuum circuit breaker |
-
2016
- 2016-11-08 CN CN201610979798.8A patent/CN106571266B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994008348A1 (en) * | 1992-09-25 | 1994-04-14 | Siemens Aktiengesellschaft | Electromagnetically operated switching device |
| CN201134387Y (en) * | 2007-12-20 | 2008-10-15 | 林建平 | Trip mechanism for vacuum switch |
| CN203553028U (en) * | 2013-06-07 | 2014-04-16 | 安徽鑫龙电器股份有限公司 | Under-voltage and no-voltage protection device for vacuum circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN106571266B (en) | 2020-08-04 |
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Address after: No. 5, Leyuan South First Street, Yanqi Economic Development Zone, Huairou District, Beijing 101407 Patentee after: Jebet Electric Co.,Ltd. Address before: No. 5, Leyuan South First Street, Yanqi Economic Development Zone, Huairou District, Beijing 101407 Patentee before: BEIJING JIEYUAN ELECTRIC Co.,Ltd. |