CN105185667B - One kind energy-conservation high breaking type control and protective switch - Google Patents
One kind energy-conservation high breaking type control and protective switch Download PDFInfo
- Publication number
- CN105185667B CN105185667B CN201510642760.7A CN201510642760A CN105185667B CN 105185667 B CN105185667 B CN 105185667B CN 201510642760 A CN201510642760 A CN 201510642760A CN 105185667 B CN105185667 B CN 105185667B
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- bearing pin
- contact
- component
- electromagnet
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1072—Release mechanisms which are reset by opening movement of contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
Abstract
High breaking type control and protective switch is saved the invention discloses one kind; belong to technical field of electric equipment; solve Traditional control and protection switch structure design is unreasonable, the easy adhesion in contact, contact are easily lost, contact mechanism intensity requirement is high and the problem of aging fast short life；Mainly include failure disjunction mechanism, adhesive electromagnet, fixed support and contact system；Action executing speed of the present invention is fast, and high efficient and reliable, service life is long, and no eddy-current loss, energy consumption and temperature rise are all greatly lowered, and the present invention is widely used, with very high practical value and application prospect.
Description
Technical field
The invention belongs to technical field of electric equipment, specifically, more particularly to a kind of energy-conservation high breaking type control is with protecting
Shield switch.
Background technology
Control and protective switch be it is a kind of by the functions such as short-circuiting device, contactor, electrothermal relay roll into one it is intelligent
Device for switching, is mainly used in the occasion for needing to protect motor, and major function has：Short-circuit protection, open-phase protection, stall
Protection, overcurrent protection, overvoltage/undervoltage protection and earth leakage protective.The structure of this kind of switch of existing in the market mainly includes following portion
Part：Major loop contact terminal system, electromagnetism adhesive system, fault trip system, signal acquiring and processing system.Switch on and off is to pass through
What the adhesive of alternating electromagnet was completed with release, when occurring in that short circuit current flow in running, instantaneous coil produces enough
The driving lever that big magnetic field pulls iron core and makes mechanism be transformed into trip positions, mechanism makes the contact disconnection of electromagnetism pull-in winding make it
Power-off, electromagnet release, disconnects major loop contact terminal.There is following defect in the switch of this structure of tradition：
1. occurring to major loop to disconnect from short circuit current flow, middle link is relatively more, and the time is long.Because short circuit current flow
Very big, longer break will produce very big damage to contact, or even cause the adhesion of contact；
2. the instantaneous coil of the short-circuit instantaneous trip mechanism of driving, adds the length of switch internal current-carrying part, becomes
The main pyrotoxin of one of switch internal, reduces the electrical efficiency of switch, and the inductive load characteristic of coil is unfavorable for out
The extinguishing of electric arc, adds the loss of contact when closing disjunction；
3. the electromagnet of electromagnetism adhesive system uses alternating electromagnet, electric current when adhesive is maintained is higher, the hair of coil
Heat is high, and iron core has eddy-current loss, and the heating of iron core produces higher electric energy loss, while also accelerating week than more serious
Enclose the aging of plastic items；
4. three groups of contacts of contact system are self-movements, three groups of moving contacts are promoted by the stage clip of itself respectively during adhesive
Moving contact is contacted with static contact, if wherein there is one group of contact motion obstruction, switch phase shortage is will result in, to protected load
Damage.When contact disconnects, the release spring of electromagnet or the energy-stored spring of mechanism will overcome the resistance of three groups of contact stage clips
Power simultaneously depresses three groups of contacts, and the power of the energy-stored spring of this release spring for requiring electromagnet and mechanism is significantly larger than three groups
The summation of the power of contact stage clip, just can guarantee that contact reliably rapidly disconnects.The release spring of electromagnet and the energy storage bullet of mechanism
The power and energy consumption of the bigger electromagnet of power of spring are bigger, and the intensity requirement to mechanism is also higher.
The content of the invention
To solve the above problems, the present invention provides a kind of energy-conservation high breaking type control and protective switch.
The present invention is achieved by the following technical solutions：
One kind energy-conservation high breaking type control and protective switch, including failure disjunction mechanism, adhesive electromagnet, fixed support with
And contact system, the failure disjunction mechanism, adhesive electromagnet and contact system are fixedly connected with fixed support, described former
Barrier disjunction mechanism is connected with adhesive electromagnet, contact system respectively.
The failure disjunction mechanism includes left plate, the right plate being connected with each other, and is set between the left plate and right plate
There are Handleset, the catch assembly with hasp return spring, dropout connecting plate component, electromagnet connecting plate component, the catch assembly
It is connected respectively with magnetictrip, dropout connecting plate component, the dropout connecting plate component is also connected with resetting trace, the handle
Energy storage component is provided between component and the dropout connecting plate component.
The Handleset includes handle main body, puies forward arm, bearing pin first, and the handle main body is fixedly connected with carrying arm；It is described
Catch assembly is fixed with baffle plate；The electromagnet connecting plate component is placed in dropout connecting plate component through bearing pin second, the company of dropout
Board component is provided with wins in succession the groove that the bearing pin penta of component matches with the electromagnet；The bearing pin third of the dropout connecting plate component with
Trace connection is resetted, the upper end of trace is resetted and is stuck in left plate, in the vertical slot on right plate through bearing pin；The energy storage component
Upper end is fixed in the Handleset bearing pin first, and lower end is fixed in the bearing pin fourth of the dropout connecting plate component.
The energy storage component is helical spring.
The side of the dropout connecting plate component provided with forcing driving lever, pressure driving lever bearing pin connection be arranged on left plate with
Between right plate.
The contact system includes static contact, current transformer and the moving contact being fixedly connected with moving contact guide rod, institute
State static contact to be fixed on the fixed support, the upper end of the moving contact guide rod connects with the electromagnet connecting plate component bearing pin
Connect.
The moving contact guide rod is provided with neck, and moving contact is close to plane on neck using contact stage clip.
The adhesive electromagnet uses DC electromagnet.
Compared with prior art, the beneficial effects of the invention are as follows：
1. failure disjunction mechanism of the present invention and electromagnetism adhesive mechanism are worked independently from each other, failure disjunction mechanism during normal work
Energy storage ready state is constantly in, the closed and disconnected of contact is controlled by the adhesive and disconnection of electromagnetism completely, once it is faulty
Occur, magnetictrip works rapidly, dropout connecting plate component is pushed rapidly and open contact reprimand, complete the disjunction of major loop, this
The mode of kind is directly rapider than traditional mode, preferably protects electrical equipment and the contact system of itself；
2. the failure disjunction mechanism in the present invention is more efficient more reliable, the heat of the short-circuit protection in traditional structure is eliminated
Magnetic coil, significantly reduces the temperature rise in major loop conducting system, greatly improves the service life of switch；
3. adhesive electromagnet of the present invention uses DC electromagnet, high voltage adhesive, low-voltage is maintained, with conventional AC electromagnetism
Iron phase ratio, the eddy-current loss without iron core, energy consumption and temperature rise are all greatly lowered；Avoid alternating electromagnet adhesive face one simultaneously
Denier is stained with dust, and noise and vibration are increased, and coil temperature is steeply risen to the hidden danger for burning failure；
4. three groups of moving contacts are fixed on same contact guide rod in the contact system of the present invention, driven by adhesive electromagnet
Contact guide rod completes closed and disconnected while three groups of contacts, it is to avoid the generation of phase shortage, also reduces the suction of adhesive electromagnet
Require with joint efforts, energy consumption is reduced；
5. present inventive concept is ingenious, flexibly, practical value is very high, can with good market application foreground for action executing
It is widely used in industry, business and civilian installation field.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is explosive view of the present invention；
Fig. 3 is failure disjunction mechanism explosive view of the present invention；
Fig. 4 is Handleset structural representation of the present invention；
Fig. 5 is mechanism structure schematic diagram of winning in succession of the invention of threading off；
Fig. 6 is contact system structure schematic diagram of the present invention；
Fig. 7 is that electromagnet of the present invention is won in succession modular construction schematic diagram；
Fig. 8 is structural representation when switch is off under normal work of the present invention；
Fig. 9 is structural representation when switch is in closure state under normal work of the present invention；
Figure 10 is structural representation when the present invention breaks down；
Figure 11 is structural representation when the present invention is in buckle-like state again.
In figure：1. failure disjunction mechanism；2. adhesive electromagnet；3. fixed support；4. contact system；5. left plate；6. it is right
Side plate；7. Handleset；8. hasp return spring；9. catch assembly；10. dropout connecting plate component；11. electromagnet connecting plate component；12.
Magnetictrip；13. reset trace；14. energy storage component；15. handle main body；16. carry arm；17. bearing pin first；18. contact pressure
Spring；19. bearing pin second；20. groove；21. neck；22. vertical slot；23. force driving lever；24. static contact；25. current transformer；26.
Moving contact guide rod；27. moving contact；28. bearing pin fourth；29. bearing pin penta；30. bearing pin third；31. baffle plate.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：
One kind energy-conservation high breaking type control and protective switch, including failure disjunction mechanism 1, adhesive electromagnet 2, fixed support
3 and contact system 4, the failure disjunction mechanism 1, adhesive electromagnet 2 and contact system 4 are fixed with fixed support 3 to be connected
Connect, the failure disjunction mechanism 1 is connected with adhesive electromagnet 2, contact system 4 respectively.
The failure disjunction mechanism 1 includes left plate 5, the right plate 6 being connected with each other, the left plate 5 and right plate 6 it
Between be provided with Handleset 7, the catch assembly 9 with hasp return spring 8, dropout connecting plate component 10, electromagnet connecting plate component 11, institute
State catch assembly 9 to be connected with magnetictrip 12, dropout connecting plate component 10 respectively, the dropout connecting plate component 10 also connects with resetting
Lever 13 is connected, and energy storage component 14 is provided between the Handleset 7 and the dropout connecting plate component 10.
The Handleset 7 includes handle main body 15, puies forward arm 16, bearing pin first 17, and the handle main body 15 is consolidated with carrying arm 16
Fixed connection；The catch assembly 9 is fixed with baffle plate；The electromagnet connecting plate component 11 is placed on dropout connecting plate group through bearing pin second 19
In part 10, the dropout connecting plate component 10 is provided with wins in succession the groove that the bearing pin penta 29 of component 11 matches with the electromagnet
20；The bearing pin of the dropout connecting plate component 10 the third 30 is connected with resetting trace 13, resets the upper end of trace 13 through bearing pin card
In in the vertical slot 22 on left plate 5, right plate 6；The upper end of energy storage component 14 is fixed on the bearing pin first 17 of Handleset 7
On, lower end is fixed in the bearing pin fourth 28 of the dropout connecting plate component 10.
The energy storage component 14 is helical spring.
The side of the dropout connecting plate component 10 is provided with driving lever 23 is forced, and the pressure driving lever 23 bearing pin connection is arranged on a left side
Between side plate 5 and right plate 6.
The contact system 4 include static contact 24, current transformer 25 and be fixedly connected with moving contact guide rod 26 it is dynamic
Contact 27, the static contact 24 is fixed on the fixed support 3, and upper end and the electromagnet of the moving contact guide rod 26 connect
The bearing pin of board component 11 is connected.
The moving contact guide rod 26 is provided with neck 21, and moving contact 27 is close to the upper flat of neck 21 using contact stage clip 18
Face.
The adhesive electromagnet 2 uses DC electromagnet.
Magnetictrip 12 is connected with the catch assembly 9 with hasp return spring 8, and the catch assembly 9 is provided with baffle plate, uses
Arm 16 is carried in keep out Handleset 7, the catch assembly 9 is also connected with the hasp of dropout connecting plate component 10, electromagnet connecting plate group
Part 11 is placed in dropout connecting plate component 10 through bearing pin second 19, the bearing pin of electromagnet connecting plate component 11 penta 29 and dropout connecting plate component 11
Groove 20 match, the notch size of groove 20 slightly larger than bearing pin penta 29 overall diameter size, when dropout connecting plate component 11 is inverse
When needle movement when bearing pin penta 29 can be entangled, and with the counterclockwise movement of motor magnet connecting plate component 11；The dropout connecting plate component
10 bearing pin the third 30 is connected with resetting trace 13, and the upper end for resetting trace 13 is stuck in vertical slot 22 through bearing pin, and bearing pin can edge
The track of vertical slot 22 moves up and down, and the bearing pin fourth 28 of dropout connecting plate component 10 is provided with spiral with the bearing pin first 17 of Handleset 7
Spring, described one end of dropout connecting plate component 10 is additionally provided with pressure driving lever 23, and it is that, when switching failure, can promote to force driving lever 23
Helical spring is set to recover the active force of nature, it is ensured that Handleset 7 is in trip status, if being not provided with forcing driving lever certainly
23, the energy storage component 14 of apparatus of the present invention can also make Handleset 7 be in trip status.
Embodiment 1：
Under normal work, when switching off：
As shown in Figure of description Fig. 8, Handleset 7 is in ready position, and magnetictrip 12 is in reset state, storage
Energy component 14 is in compressed energy-storage state, and adhesive electromagnet 2 electric must not be in 24 points of release conditions, moving contact 27 and static contact
From now switch is off.
Embodiment 2：
Under normal work, during switch closure：
As shown in Figure of description Fig. 9, Handleset 7 is in ready position, and magnetictrip 12 is in reset state, taken
Buckle assembly 9 is in snap-in position with dropout connecting plate component 10, and energy storage component 14 is in compressed energy-storage state, and adhesive electromagnet 2 is obtained
Electricity is in attracting state, and moving contact 27 and static contact 24 are closed, and now switch is in attracting state.
Embodiment 3：
Malfunction：
As shown in Figure of description Figure 10, when the control section of switch detect in current supply circuit it is faulty in the presence of, electricity
The magnet coil of magnetic release 12 is powered, and the iron core of magnetictrip 12 promotes catch assembly 9 to turn counterclockwise under magneticaction
Dynamic so that catch assembly 9 is separated with dropout connecting plate component 10, dropout connecting plate component 10 is counterclockwise in the presence of energy storage component 14
Rotate, dropout connecting plate component 10 promotes electromagnet connecting plate component 11 that moving contact guide rod 26 is moved downward so that moving contact 27
Separated with static contact 24, while dropout connecting plate component 10 forces driving lever 23 to cause Handleset 7 to turn over one counterclockwise by promoting
Determine angle, Handleset 7 is in trip status.
Embodiment 4：
Buckle-like state again：
The Handleset 7 in position shown in Figure of description Figure 10 is rotated counterclockwise into certain angle with hand, reach as
Position shown in Figure of description Figure 11.When Handleset 7 is rotated counterclockwise, restoring link 13 is pulled to move up, restoring link 13
Drive dropout connecting plate component 10 to rotate clockwise certain angle, arm 16 is carried by the baffle plate 31 of catch assembly 9 until Handleset 7
It is forced to stop when blocking, now dropout connecting plate component 10 is in hasp state with catch assembly 9, finally with palm fixed handle component
Rotate clockwise certain angle and reach position as shown in Figure of description Fig. 8, switch is at energy storage ready state, now opened
Off status normal operating conditions, the closed and disconnected of contact is controlled through adhesive electromagnet 2.
In summary, only presently preferred embodiments of the present invention, not for limiting the scope that the present invention is implemented, it is all according to
The equivalent changes and modifications carried out by shape, construction, feature and spirit described in scope of the invention as claimed, all should be included in this
In the right of invention.
Claims (6)
1. one kind energy-conservation high breaking type control and protective switch, it is characterised in that：Including failure disjunction mechanism (1), adhesive electromagnetism
Iron (2), fixed support (3) and contact system (4), the failure disjunction mechanism (1), adhesive electromagnet (2) and contact system
System (4) be fixedly connected with fixed support (3), the failure disjunction mechanism (1) respectively with adhesive electromagnet (2), contact system
(4) connect, the failure disjunction mechanism (1) include be connected with each other left plate (5), right plate (6), the left plate (5) with
Between right plate (6) provided with Handleset (7), the catch assembly (9) with hasp return spring (8), dropout connecting plate component (10),
Electromagnet connecting plate component (11), the catch assembly (9) is connected with magnetictrip (12), dropout connecting plate component (10) respectively,
The dropout connecting plate component (10) is also connected with resetting trace (13), the Handleset (7) and the dropout connecting plate component
(10) energy storage component (14) is provided between, the Handleset (7) includes handle main body (15), puies forward arm (16), bearing pin first (17),
The handle main body (15) is fixedly connected with carrying arm (16)；The catch assembly (9) is fixed with baffle plate；The electromagnet connecting plate
Component (11) is placed in dropout connecting plate component (10) through bearing pin second (19), and the dropout connecting plate component (10) is provided with and the electromagnetism
Iron is won in succession the groove (20) that the bearing pin penta (29) of component (11) matches；The bearing pin third (30) of the dropout connecting plate component (10) with
Trace (13) connection is resetted, the upper end for resetting trace (13) is stuck in left plate (5), the vertical slot on right plate (6) through bearing pin
(22) in；Energy storage component (14) upper end is fixed in the bearing pin first (17) of the Handleset (7), and lower end is fixed on described
In the bearing pin fourth (28) of dropout connecting plate component (10).
2. a kind of energy-conservation high breaking type control and protective switch according to claim 1, it is characterised in that：The energy storage group
Part (14) is helical spring.
3. a kind of energy-conservation high breaking type control and protective switch according to claim 2, it is characterised in that：The company of dropout
The side of board component (10) is provided with driving lever (23) is forced, and pressure driving lever (23) bearing pin connection is arranged on left plate (5) and right
Between side plate (6).
4. a kind of energy-conservation high breaking type control and protective switch according to claim 1, it is characterised in that：The contact system
System (4) includes static contact (24), current transformer (25) and the moving contact (27) being fixedly connected with moving contact guide rod (26), institute
State static contact (24) to be fixed on the fixed support (3), upper end and the electromagnet connecting plate of the moving contact guide rod (26)
Component (11) bearing pin is connected.
5. a kind of energy-conservation high breaking type control and protective switch according to claim 4, it is characterised in that：The moving contact
Guide rod (26) is provided with neck (21), and moving contact (27) is close to plane on neck (21) using contact stage clip (18).
6. a kind of energy-conservation high breaking type control and protective switch according to claim 1, it is characterised in that：The adhesive electricity
Magnet (2) uses DC electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642760.7A CN105185667B (en) | 2015-10-06 | 2015-10-06 | One kind energy-conservation high breaking type control and protective switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510642760.7A CN105185667B (en) | 2015-10-06 | 2015-10-06 | One kind energy-conservation high breaking type control and protective switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105185667A CN105185667A (en) | 2015-12-23 |
| CN105185667B true CN105185667B (en) | 2017-09-26 |
Family
ID=54907677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510642760.7A Expired - Fee Related CN105185667B (en) | 2015-10-06 | 2015-10-06 | One kind energy-conservation high breaking type control and protective switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105185667B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448612B (en) * | 2015-12-30 | 2017-09-29 | 雷顿电气科技有限公司 | Control and protective switch |
| CN107968023B (en) * | 2017-11-30 | 2019-05-14 | 天津航空机电有限公司 | A kind of base member for multi-phase circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817052Y (en) * | 2005-09-13 | 2006-09-13 | 上海良信电器有限公司 | Action mechanism for current leaking breaker |
| CN201655694U (en) * | 2009-09-21 | 2010-11-24 | 浙江中凯科技股份有限公司 | Contact system with short circuit protection function |
| CN202749316U (en) * | 2012-04-17 | 2013-02-20 | 温州控保电气有限公司 | Over-current tripping breaker for control and protective switching device |
| CN104835694A (en) * | 2015-05-27 | 2015-08-12 | 科都电气有限公司 | Intelligent circuit breaker |
| CN205028867U (en) * | 2015-10-06 | 2016-02-10 | 江苏新晨电气有限公司 | Novel disconnected type control of energy -conserving high score and protection switch |
-
2015
- 2015-10-06 CN CN201510642760.7A patent/CN105185667B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2817052Y (en) * | 2005-09-13 | 2006-09-13 | 上海良信电器有限公司 | Action mechanism for current leaking breaker |
| CN201655694U (en) * | 2009-09-21 | 2010-11-24 | 浙江中凯科技股份有限公司 | Contact system with short circuit protection function |
| CN202749316U (en) * | 2012-04-17 | 2013-02-20 | 温州控保电气有限公司 | Over-current tripping breaker for control and protective switching device |
| CN104835694A (en) * | 2015-05-27 | 2015-08-12 | 科都电气有限公司 | Intelligent circuit breaker |
| CN205028867U (en) * | 2015-10-06 | 2016-02-10 | 江苏新晨电气有限公司 | Novel disconnected type control of energy -conserving high score and protection switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105185667A (en) | 2015-12-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9203232B2 (en) | Leakage detection protective circuit | |
| CN105185667B (en) | One kind energy-conservation high breaking type control and protective switch | |
| CN105977907B (en) | Electricity-saving type ground-fault interrupter | |
| CN102074930B (en) | Electric leakage detection protective circuit | |
| CN205028867U (en) | Novel disconnected type control of energy -conserving high score and protection switch | |
| CN102768919B (en) | Soft-start circuit | |
| CN203368014U (en) | Soft start protection device and compressor diagnosis protection device comprising same | |
| CN104538251A (en) | Contactor driven by capacitive stored energy | |
| CN105261530A (en) | Multi-stroke realizing circuit and multi-stroke control method for circuit breakers | |
| CN102339686A (en) | Low-consumption and high-efficiency electromagnetic system | |
| CN203134729U (en) | Shunt release circuit control system of low-power consumption molded case circuit breaker | |
| CN203746700U (en) | Contactor de-excitation device | |
| CN203607351U (en) | A low-voltage circuit breaker automatic closing apparatus | |
| CN203553052U (en) | Closing contactor | |
| CN110600338A (en) | Low-voltage intelligent charge control switch | |
| CN207261169U (en) | The electromagnetic brake driver of wind generating set pitch control system and pitch motor | |
| CN201138748Y (en) | Protecting equipment for electric power secondary circuit tripping and closing coil | |
| CN205680643U (en) | A kind of intelligent universal circuit breaker | |
| CN204167205U (en) | Three-winding magnetic suck cut-offs A.C. contactor circuit | |
| CN211088171U (en) | AC contactor for solving second flash | |
| CN205050794U (en) | Realize control circuit of many strokes of circuit breaker | |
| CN204167204U (en) | Energy saving ac contactor circuit structure system | |
| CN204167210U (en) | A.C. contactor flash device | |
| CN106301141B (en) | Anti-interference electricity device and method for control loop of asynchronous motor | |
| CN219937942U (en) | Under-voltage tripping device for high-voltage circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170926 Termination date: 20211006 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |