CN107958812A - A kind of self-shield high voltage direct current relay - Google Patents
A kind of self-shield high voltage direct current relay Download PDFInfo
- Publication number
- CN107958812A CN107958812A CN201711275620.6A CN201711275620A CN107958812A CN 107958812 A CN107958812 A CN 107958812A CN 201711275620 A CN201711275620 A CN 201711275620A CN 107958812 A CN107958812 A CN 107958812A
- Authority
- CN
- China
- Prior art keywords
- conductive sheet
- self
- high voltage
- spring plate
- direct current
- 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.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 230000003068 static effect Effects 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 230000000670 limiting effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims 1
- 230000005520 electrodynamics Effects 0.000 abstract description 13
- 229920003266 Leaf® Polymers 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 5
- 238000002679 ablation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention discloses a kind of self-shield high voltage direct current relay, including：Dead point component, including the multiple stationary contacts being fixedly installed on ceramic shell；Dynamic point component, the movable inside for being arranged at ceramic shell, including multiple movable contacts, multiple spring plate groups for fixing movable contact, the conductive sheet for connecting multiple spring plate groups and the resettable fuse being arranged between conductive sheet and spring plate group that corresponding stationary contact is set；Driving device, for driving the movable contact selectivity on dynamic point component and the stationary contact point contact on dead point component conductive；Arc extinguishing component, for forming arc extinguishing magnetic field between dead point component and dynamic point component, by setting resettable fuse, disconnecting circuit when can be excessive in the electric current in circuit or peak current occur, current value in circuit recovers normal work after recovering normal, the setting of spring plate group can cancellation current flow through movable contact, spring plate group and electrodynamic repulsion force caused by conductive sheet.
Description
Technical field
The present invention relates to relay technology neighborhood, more particularly to a kind of self-shield high voltage direct current relay.
Background technology
Existing low current (below 100A) high voltage direct current relay is possible in use can be because go out in circuit
Existing peak current causes to damage to relay.Existing relay is without self-protection function, it is impossible to protective relay from
There is the damage brought during peak current, therefore common practice is, by setting the exterior measures to protect relay, with
Prevent peak current and relay is caused to damage.Common way has following two：1st, by inline fuse, in electricity
Fuse will be blown when flowing through big, so that cut-off loop, but needed using this method relay after blowout
The fuse more renewed can be continuing with, and fuse uses and replace the use cost that will bring higher；2nd, use
Sensor is monitored the electric current in circuit, passes through the control electricity of control system block system relay when there is peak current
Stream, but realize that the protection to relay needs to design corresponding control system using this method so that operation difficulty increase, and
And control circuit is complicated, does not utilize operation and maintenance.
The content of the invention
It is an object of the present invention to：A kind of self-shield high voltage direct current relay is provided, it can be in current loop
There is the control circuit of block system relay during peak current.
It is another object of the present invention to：A kind of self-shield high voltage direct current relay is provided, it can be in peak current
Resume work after disappearance.
For this purpose, the present invention uses following technical scheme：
A kind of self-shield high voltage direct current relay is provided, including：
Dead point component, including the multiple stationary contacts being fixedly installed on ceramic shell；
Dynamic point component, the movable inside for being arranged at the ceramic shell, including the correspondence stationary contact set multiple
Movable contact, multiple spring plate groups for fixing the movable contact, the conductive sheet for connecting multiple spring plate groups and set
The resettable fuse being placed between the conductive sheet and the spring plate group；
Driving device, for driving the movable contact selectivity on the dynamic component and the institute on the dead point component
State stationary contact point contact conduction；
Arc extinguishing component, for forming arc extinguishing magnetic field between the dead point component and the dynamic component.
, can or appearance excessive in the electric current in circuit by setting resettable fuse between spring plate group and conductive sheet
Timely disconnecting circuit during peak current, avoids great electric current and peak current from causing to damage to relay, even results in dynamic
Contact and stationary contact sintering are integrated, so that relay loss of function, causes danger, while the current value in circuit recovers
Resettable fuse can recover normally to work after normal, and replacing fuse without staff can just be continuing with,
It can be reduced while protective relay and usually need replacing time loss caused by fuse.Movable contact passes through spring leaf
Group be connected with conductive sheet, in the course of normal operation of relay, spring plate group can cancellation current flow through movable contact, spring plate group
With conductive sheet caused by electrodynamic repulsion force, avoid relay during the work time movable contact and stationary contact due to the work of electrodynamic repulsion force
Opened with and by reprimand so that occur electric arc and ablation contact at contact gap, while can be buffered when movable contact is connected with stationary contact
Impact force when movable contact and stationary contact point contact, reduces the abrasion between movable contact and stationary contact, and that improves relay uses the longevity
Life.
As a kind of perferred technical scheme, the spring plate group includes first and second, described first and institute
It is of an L-shaped structure between stating second, described first is fixedly connected on the conductive sheet side.
As a kind of perferred technical scheme, the conductive sheet is in door type structure, and described first is fixedly installed on institute
State on the bending part of conductive sheet, the second position is arranged in close to the side of the conductive sheet, the resettable fuse
Described first between the bending part.
As a kind of perferred technical scheme, described first by rivet on the bending part, the rivet
With being provided with insulation sleeve between described first.
As a kind of perferred technical scheme, the spring plate group is formed by stacking by multiple spring leafs.
As a kind of perferred technical scheme, the driving device includes the connecting shaft being connected with the conductive sheet and wears
In the static iron core in the connecting shaft, resetting spring, dynamic iron core, sealing drum and coil, the static iron core, the resetting spring and
The dynamic iron core is located in the sealing drum, and the coil is arranged at outside the sealing drum.
As a kind of perferred technical scheme, the bottom of the ceramic shell is provided with connected unit, right in the connecting shaft
The connected unit movable sleeve is answered to be equipped with the fixed plate being fixedly connected with the connected unit.
As a kind of perferred technical scheme, compression spring is provided between the fixed plate and the conductive sheet, it is described
The compression spring is corresponded in connecting shaft and is convexly equipped with limiting section, the compression spring be located at the limiting section and the conductive sheet it
Between.
As a kind of perferred technical scheme, the arc extinguishing component includes being arranged at the fixed branch of the ceramic shell circumference
Frame and the magnet being fixedly installed in the fixing bracket.
As a kind of perferred technical scheme, the resettable fuse is patch type resettable fuse, its two poles of the earth is divided
It is not connected with the conductive sheet and the spring plate group.
Beneficial effects of the present invention are：, can be in electricity by setting resettable fuse between spring plate group and conductive sheet
Flow through big or occur cutting off circuit during peak current, play the role of protecting circuit and relay, avoid burning out equipment and burn out
The movable contact and stationary contact of relay, and movable contact and the stationary contact sintering being likely to occur are integrated, and ensure that relay can
Normal work, ensures safe to use；By setting spring plate group and conductive sheet, movable contact, spring leaf can be flowed through in cancellation current
Group and conductive sheet caused by electrodynamic repulsion force, avoid relay during the work time movable contact and stationary contact due to electrodynamic repulsion force
Act on and opened by reprimand so that occur electric arc and ablation contact at contact gap, ensure well connecing between movable contact and stationary contact
Touch.
Brief description of the drawings
The present invention is described in further detail below according to drawings and examples.
Fig. 1 is the explosive view of self-shield high voltage direct current relay described in embodiment.
In figure：
1st, stationary contact；2nd, movable contact；3rd, spring plate group；31st, first；32nd, second；4th, conductive sheet；41st, bending part；
5th, resettable fuse；6th, rivet；7th, insulation sleeve；8th, ceramic shell；9th, connecting shaft；10th, static iron core；11st, resetting spring；12、
Dynamic iron core；13rd, sealing drum；14th, coil；15th, connected unit；16th, fixed plate；17th, spring is compressed；18th, fixing bracket；19th, magnet.
Embodiment
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, in this present embodiment, a kind of self-shield high voltage direct current relay of the present invention, including：
Dead point component, including the multiple stationary contacts 1 being fixedly installed on ceramic shell 8；
Dynamic point component, the movable inside for being arranged at the ceramic shell 8, including the correspondence stationary contact 1 set more
A movable contact 2, multiple spring plate groups 3 for fixing the movable contact 2, the conduction for connecting multiple spring plate groups 3
Piece 4 and the resettable fuse 5 being arranged between the conductive sheet 4 and the spring plate group 3；
Driving device, for driving on the selectivity of the movable contact 2 and the dead point component on the dynamic component
The stationary contact 1 contacts conduction；
Arc extinguishing component, for forming arc extinguishing magnetic field between the dead point component and the dynamic component.
By between spring plate group 3 and conductive sheet 4 set resettable fuse 5, can it is excessive in the electric current in circuit or
There is timely disconnecting circuit during peak current, avoid great electric current and peak current from causing to damage to relay, or even lead
Actuating contact 2 and the sintering of stationary contact 1 are integrated, so that relay loss of function, or even cause danger, while in circuit
After size of current recovers normal, resettable fuse 5 recovers normally to work, and fuse ability is replaced without staff
It is continuing with, can be reduced while protective relay and replace time loss caused by fuse.
Movable contact 2 is connected by spring plate group 3 with conductive sheet 4, and in relay work, spring plate group 3 can be offset
Electric current flows through movable contact 2, spring plate group 3 and electrodynamic repulsion force caused by conductive sheet 4, avoids relay from moving during the work time and touches
Point 2 and stationary contact 1 are opened due to the effect of electrodynamic repulsion force by reprimand so that occur electric arc and ablation contact at contact gap, at the same time
It can buffer movable contact 2 when movable contact 2 is connected with stationary contact 1 and impact force when stationary contact 1 contacts, reduce movable contact 2 and quiet
Abrasion between contact 1, improves the service life of relay.
Preferably, the spring plate group 3 is including first 31 and second 32, described first 31 and second 32 described
Between be of an L-shaped structure, described first 31 is fixedly connected on 4 side of conductive sheet.
Further, the conductive sheet 4 is in door type structure, and described first 31 is fixedly installed on the conductive sheet 4
On bending part 41, described second 32 is located at close to the side of the conductive sheet 4, and the resettable fuse 5 is arranged at described
Between first 31 and the bending part 41.
Specifically, described first 31 is riveted on the bending part 41 by rivet 6, the rivet 6 and described first
Insulation sleeve 7 is provided between portion 31.
When movable contact 2 and the closure of stationary contact 1 are connected, electric current flows to movable contact 2 by stationary contact 1, and movable contact 2 will be subject to
The electrodynamic repulsion force that electric current flowing produces, the direction of electrodynamic repulsion force is to be directed toward movable contact 2 by stationary contact 1, when electrodynamic repulsion force is excessive,
Movable contact 2 will be separated with stationary contact 1, and the simply arc current flowed through between contact, its value is smaller, therefore contact again can be
Re-closed under contact pressure effect, then denounce out again, simultaneously because the effect of arc current can produce high temperature on contact, make
Obtain and melting welding occurs between moving contact and static contact.Moving contact is connected on conductive sheet 4 by this programme by spring plate group 3, in work
During work, when electrodynamic repulsion force separates moving contact with static contact, the presence of spring plate group 3 can apply moving contact in reverse work
Firmly, and then the electrodynamic repulsion force between contact is offset, ensures the pressure between contact, avoid moving contact from being separated with static contact and cause height
Together with the arc current of temperature causes moving contact to be fusion welded to static contact, avoid relay cannot normally open situation occur,
The service life of relay is enhanced at the same time.
Further, the spring plate group 3 is formed by stacking by multiple spring leafs.Spring plate group 3 is overlapped by multiple spring leafs
Into the elasticity that can increase spring plate group 3, electrodynamic repulsion force can be offset all the time by ensureing the work of spring plate group 3, ensure movable contact 2
Bonding strength between stationary contact 1.
Preferably, the driving device includes the connecting shaft 9 being connected with the conductive sheet 4 and is arranged in the connecting shaft 9
On static iron core 10, resetting spring 11, dynamic iron core 12, sealing drum 13 and coil 14, the static iron core 10, the resetting spring 11
It is located at the dynamic iron core 12 in the sealing drum 13, the coil 14 is arranged at outside the sealing drum 13.
Specifically, the bottom of the ceramic shell 8 is provided with connected unit 15, the connected unit is corresponded in the connecting shaft 9
15 movable sleeves are equipped with the fixed plate 16 being fixedly connected with the connected unit 15.
Further, it is provided between the fixed plate 16 and the conductive sheet 4 and compresses spring 17, in the connecting shaft 9
The corresponding compression spring 17 is convexly equipped with limiting section, and the compression spring 17 is between the limiting section and the conductive sheet 4.
The connecting shaft 9 being connected with conductive sheet 4 and the static iron core 10 being arranged in connecting shaft 9, resetting spring 11, dynamic iron are set
The driving device that core 12, sealing drum 13 and coil 14 form, can drive conductive when needing to close movable contact 2 and stationary contact 1
Piece 4 drives spring plate group 3 and then drives movable contact 2 to be close to stationary contact 1.The phase of static iron core 10, resetting spring 11 and dynamic iron core 12
Mutually coordinate, it can be achieved that when needing disconnecting circuit, the decrement of resetting spring 11, which is released, divides static iron core 10 and dynamic iron core 12
Open, and then drive conductive sheet 4 to separate movable contact 2 and stationary contact 1.
Preferably, the arc extinguishing component includes fixing bracket 18 and the fixed setting for being arranged at 8 circumference of ceramic shell
Magnet 19 in the fixing bracket 18.The magnet 19 being fixed on fixing bracket 18 is attached in ceramic shell 8
The magnetic field in portion can effectively reduce the generation of electric arc when movable contact 2 is separated with stationary contact 1, and protection moving contact is avoided with static contact
Due to electric arc presence and melting welding is integrated.
Preferably, the resettable fuse 5 is patch type resettable fuse 5, its two poles of the earth respectively with the conductive sheet 4
Connected with the spring plate group 3.
Set patch type resettable fuse can be effectively by conductive sheet 4 and spring between conductive sheet 4 and spring plate group 3
Piece group 3 separates so that only connected between the two by resettable fuse 5, avoid the occurrence of conductive sheet 4 and spring plate group 3 it
Between directly connect and so that resettable fuse 5 can not play the role of isolation circuitry, while patch type resettable fuse
It can be easy to the installation of relay, beneficial to the quality of production for ensureing relay.
In description herein, it is to be understood that term " first ", " second " are only used for being distinguish between in description,
Without particular meaning.
It is to be understood that above-mentioned embodiment is only that presently preferred embodiments of the present invention and institute's application technology are former
Reason, in technical scope disclosed in this invention, change that any one skilled in the art is readily apparent that or
Replace, should all cover within the scope of the present invention.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations
Example.It will be understood by those skilled in the art that various modifications, equivalent substitution, change etc. can also be done to the present invention.But this
A little conversion, all should be within protection scope of the present invention without departing from the spirit of the present invention.In addition, present specification and power
Some terms used in sharp claim are not limitation, it is only for easy to describe.In addition, " one described in above many places
A embodiment ", " another embodiment " etc. represent different embodiments, naturally it is also possible to which its all or part is incorporated in one
In embodiment.
Claims (10)
- A kind of 1. self-shield high voltage direct current relay, it is characterised in that including：Dead point component, including the multiple stationary contacts being fixedly installed on ceramic shell；Dynamic point component, the movable inside for being arranged at the ceramic shell, including the correspondence stationary contact are set multiple dynamic tactile Select, multiple spring plate groups for fixing the movable contact, the conductive sheet for connecting multiple spring plate groups and be arranged at Resettable fuse between the conductive sheet and the spring plate group；Driving device, for drive on the dynamic component the movable contact selectivity with it is described quiet on the dead point component Contact is conductive；Arc extinguishing component, for forming arc extinguishing magnetic field between the dead point component and the dynamic component.
- 2. self-shield high voltage direct current relay according to claim 1, it is characterised in that the spring plate group includes first Portion and second, described first and it is second described between be of an L-shaped structure, described first is fixedly connected on the conductive sheet On side.
- 3. self-shield high voltage direct current relay according to claim 2, it is characterised in that the conductive sheet is in door type knot Structure, described first is fixedly installed on the bending part of the conductive sheet, and the second position is in close to the one of the conductive sheet Side, the resettable fuse are arranged at described first between the bending part.
- 4. self-shield high voltage direct current relay according to claim 3, it is characterised in that described first passes through rivet riveting Be connected on the bending part, the rivet and it is first described between be provided with insulation sleeve.
- 5. self-shield high voltage direct current relay according to claim 1, it is characterised in that the spring plate group is by multiple bullets Reed is formed by stacking.
- 6. self-shield high voltage direct current relay according to claim 1, it is characterised in that the driving device includes and institute Static iron core, resetting spring, dynamic iron core, sealing drum and the line stated the connecting shaft of conductive sheet connection and be arranged in the connecting shaft Circle, the static iron core, the resetting spring and the dynamic iron core are located in the sealing drum, and the coil is arranged at the sealing Cylinder is outer.
- 7. self-shield high voltage direct current relay according to claim 6, it is characterised in that the bottom of the ceramic shell is set Connected unit is equipped with, the connected unit movable sleeve is corresponded in the connecting shaft and is equipped with the fixed plate being fixedly connected with the connected unit.
- 8. self-shield high voltage direct current relay according to claim 7, it is characterised in that the fixed plate and the conduction Compression spring is provided between piece, the compression spring is corresponded in the connecting shaft and is convexly equipped with limiting section, the compression spring position Between the limiting section and the conductive sheet.
- 9. self-shield high voltage direct current relay according to claim 1, it is characterised in that the arc extinguishing component includes setting Fixing bracket and the magnet that is fixedly installed in the fixing bracket in the ceramic shell circumference.
- 10. self-shield high voltage direct current relay according to claim 1, it is characterised in that the resettable fuse is Patch type resettable fuse, its two poles of the earth are connected with the conductive sheet and the spring plate group respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275620.6A CN107958812B (en) | 2017-12-06 | 2017-12-06 | Self-protection high-voltage direct-current relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711275620.6A CN107958812B (en) | 2017-12-06 | 2017-12-06 | Self-protection high-voltage direct-current relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107958812A true CN107958812A (en) | 2018-04-24 |
| CN107958812B CN107958812B (en) | 2020-04-10 |
Family
ID=61958088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711275620.6A Active CN107958812B (en) | 2017-12-06 | 2017-12-06 | Self-protection high-voltage direct-current relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107958812B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205723356U (en) * | 2016-05-31 | 2016-11-23 | 比亚迪股份有限公司 | Relay |
| CN205984821U (en) * | 2016-05-31 | 2017-02-22 | 比亚迪股份有限公司 | Relay |
| CN206040548U (en) * | 2016-05-31 | 2017-03-22 | 比亚迪股份有限公司 | Relay |
| CN107045955A (en) * | 2017-04-27 | 2017-08-15 | 厦门宏发电声股份有限公司 | A kind of electromagnetic relay of high pressure resistant large current load |
| CN107204250A (en) * | 2016-03-18 | 2017-09-26 | 比亚迪股份有限公司 | Relay |
-
2017
- 2017-12-06 CN CN201711275620.6A patent/CN107958812B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204250A (en) * | 2016-03-18 | 2017-09-26 | 比亚迪股份有限公司 | Relay |
| CN205723356U (en) * | 2016-05-31 | 2016-11-23 | 比亚迪股份有限公司 | Relay |
| CN205984821U (en) * | 2016-05-31 | 2017-02-22 | 比亚迪股份有限公司 | Relay |
| CN206040548U (en) * | 2016-05-31 | 2017-03-22 | 比亚迪股份有限公司 | Relay |
| CN107045955A (en) * | 2017-04-27 | 2017-08-15 | 厦门宏发电声股份有限公司 | A kind of electromagnetic relay of high pressure resistant large current load |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107958812B (en) | 2020-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104835700B (en) | Control and protective switch | |
| US20120307409A1 (en) | Alternating current contactor with mechanical short circuit self-locking function | |
| CN107359093B (en) | A kind of shielding arc-suppressing method of contact of breaker | |
| CN107359068A (en) | A kind of breaker of plastic casing with compound arc extinction performance | |
| KR101918237B1 (en) | High-speed switch | |
| CN205428834U (en) | Take high -voltage direct -current relay of auxiliary switch device | |
| CN102436976B (en) | High-voltage direct-current contactor | |
| CN106098477A (en) | A kind of high-voltage DC contactor of band magnetic coil arc extinguishing | |
| CN208336119U (en) | The two poles of the earth leakage circuit breakers | |
| CN107958812A (en) | A kind of self-shield high voltage direct current relay | |
| CN107342178A (en) | A kind of high-breaking miniature breaker | |
| CN107342198A (en) | A kind of breaker of plastic casing with powerful disjunction short circuit current ability | |
| CN209104052U (en) | A kind of high voltage isolator | |
| US11694856B2 (en) | High voltage relay resistant to instantaneous high-current impact | |
| CN107706055B (en) | High-voltage relay resistant to instantaneous large current impact | |
| CN207542152U (en) | A kind of high-voltage relay of resistance to transient high-current impact | |
| CN209658102U (en) | A kind of electromagnetic relay of the contact structure with quick blow-out | |
| CN107527773A (en) | A kind of omnipotent breaker with powerful arc extinction performance | |
| CN207302929U (en) | A kind of breaker of plastic casing with compound arc extinction performance | |
| CN204966438U (en) | Drop out fuse carries and melts piece | |
| CN202259056U (en) | High-voltage DC contactor | |
| CN102623219A (en) | Disconnecting switch and vacuum circuit breaker composite system | |
| CN207134318U (en) | Plastic shell miniature circuit breaker | |
| CN206340463U (en) | Electric major loop cut-offs isolating closing lock system | |
| CN205303326U (en) | Middling pressure vacuum circuit breaker structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240717 Address after: 516000 Factory Building at Plot ZKD-005-02, Sanhe Village, Tonghu Town, Zhongkai High tech Zone, Huizhou City, Guangdong Province Patentee after: Huizhou Yiwei Hydrogen Energy Co.,Ltd. Country or region after: China Address before: 516006 Room 401, 4th floor, R & D building, No. 36, Huifeng Road, Zhongkai high tech Zone, Huizhou City, Guangdong Province Patentee before: HUIZHOU YIWEI NEW ENERGY Research Institute Country or region before: China |
|
| TR01 | Transfer of patent right |