CN110061485A - Protective device is used in a kind of inhibition of transformer DC magnetic bias - Google Patents
Protective device is used in a kind of inhibition of transformer DC magnetic bias Download PDFInfo
- Publication number
- CN110061485A CN110061485A CN201810495777.8A CN201810495777A CN110061485A CN 110061485 A CN110061485 A CN 110061485A CN 201810495777 A CN201810495777 A CN 201810495777A CN 110061485 A CN110061485 A CN 110061485A
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- plate
- shell
- fixedly connected
- sand
- glass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Earth Drilling (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a kind of transformer DC magnetic bias inhibition protective devices, belong to overvoltage protection field.A kind of transformer DC magnetic bias inhibition protective device; including shell and zinc oxide valve plate; the zinc oxide valve plate is fixedly connected on outer casing inner wall; fixed bottom plate is fixedly connected in the shell; thermal sensitive piece is connected on the fixed bottom plate, the zinc oxide valve plate is located at the upper right side of thermal sensitive piece, is fixedly connected with static contact on the fixed bottom plate; it is fixedly connected with moving contact corresponding with static contact on the thermal sensitive piece, slidably connects movable plate in the shell.Kelly may be implemented far from card slot in it; to which lifter plate moves up under the action of tension spring; to which lifter plate drives limit sliding sleeve to move up; to which movable plate moves right under the action of rigid reset item; to between the partition panel insertion static contact and moving contact of movable plate right end; to effectively be separated, overvoltage protection is effectively protected.
Description
Technical field
The present invention relates to overvoltage protection fields, inhibit more specifically to a kind of transformer DC magnetic bias with protection
Device.
Background technique
Transformer DC magnetic bias inhibits the master control unit of device, by high speed, sampling with high precision device, extensive computation processing
Chip and high-sensitive DC voltage-current sensor part are constituted, and algorithm is accurate, strict logic, and processing is real-time, criteria parameter
It is adjustable, facilitate adjusting.
Transformer DC magnetic bias inhibits device to inhibit DC current inflow transformer by the method for series capacitor, when
After the failures such as single-phase earthing occurs in system, capacitor both ends will appear high overvoltage, to reduce the resistance to compacting of capacitor,
It then must have corresponding measure and effective protection realized to capacitor, pass through high energy ZnO valve block and high speed by-pass switch conduct
Press down the duplicate protection of straight capacitor.
But existing high energy ZnO valve block, when circuit breaks down, high energy ZnO valve block bears larger current, temperature
Degree is easy to increase, and temperature can continue to increase if fault persistently carries out, and be easy to cause high energy ZnO valve block is impaired to damage,
It may cause the safety accidents such as explosion when serious, need to be effectively isolated at this time and close contact point, close circuit and stop working, and show
Lack the isolating device under such situation in some protective devices.
Summary of the invention
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of transformer DC magnetic bias to inhibit with protection
Device, it may be implemented effectively to close isolation contact point, it is ensured that guarantor is effectively protected in high energy ZnO valve block normal use
Protection unit.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of transformer DC magnetic bias inhibition protective device, including shell and zinc oxide valve plate, the zinc oxide valve plate
It is fixedly connected on outer casing inner wall, fixed bottom plate is fixedly connected in the shell, is connected with thermal sensitive piece on the fixed bottom plate,
The zinc oxide valve plate is located at the upper right side of thermal sensitive piece, is fixedly connected with static contact on the fixed bottom plate, on the thermal sensitive piece
It is fixedly connected with moving contact corresponding with static contact, movable plate is slidably connected in the shell, the movable plate right end is fixed
It is connected with partition panel, multiple rigid reset items are fixedly connected on the movable plate, are fixedly connected with gear on the outer casing inner wall
Bar, the rigid reset left end offset with bar, are equipped with the first mounting groove in the upper shell, in first mounting groove
Lifter plate is slidably connected, the rigid reset right end sliding sleeve has limit sliding sleeve, and the lifter plate right end passes through connection
Bar is fixedly linked with limit sliding sleeve, and the lifter plate upper end is fixedly linked by tension spring and outer casing inner wall, interts on the shell
Be connected with button, the button lower end is fixedly linked with lifter plate upper end, opened up on the shell it is fluted, in the groove lead to
It crosses spring and is connected with kelly, card slot corresponding with kelly is offered on the lifter plate, kelly is far from card slot, so that lifter plate exists
It is moved up under the action of tension spring, so that lifter plate drives limit sliding sleeve to move up, thus under the action of rigid reset item
Movable plate moves right, thus movable plate right end partition panel insertion static contact and moving contact between, thus carry out effectively every
It is disconnected, it is effective to close isolation contact point, it is ensured that protective device is effectively protected in high energy ZnO valve block normal use.
Preferably, lever is rotatably connected in the shell, the long end of lever is fixedly connected with promotion ball, the promotion
Ball offsets with thermal sensitive piece upper left side, and the second mounting groove is offered on the shell, is fixedly connected in second mounting groove
Drift sand glass marble and lower drift sand glass marble, the upper drift sand glass marble lower end is by adjusting glass tube and lower drift sand glass marble phase
Even, the lower drift sand glass marble lower end is connected with recovery tube, slidably connects drift sand adjustable plate on the adjusting glass tube, described
It is fixedly connected with fixed plate on shell, is connected by reset spring with drift sand adjustable plate on the left of the fixed plate, in the shell
The first fixed pulley and the second fixed pulley are connected on wall, the drift sand adjustable plate right end is fixedly connected with traction rope, the traction
Restrict one end far from drift sand adjustable plate pass through fixed plate and successively bypass the first fixed pulley and the second fixed pulley and with lever short end
It is connected, elevating glass ball is slidably connected in the lower drift sand glass marble, the lower end of the elevating glass ball is connected with sand output line,
The diameter of the sand output line is less than the diameter for adjusting glass tube, is fixedly connected on the left of the elevating glass ball by fixed link
Triangle pushing block, the kelly upper right side are fixedly connected with lower triangle pushing block corresponding with upper triangle pushing block.
Preferably, be fixedly connected with sand pump in second mounting groove, the sand pump go out husky end by sandline with
Upper drift sand glass marble is fixedly linked, and the sand pump lower end is connected by taking out sand tube with recovery tube, bottom side inside the recovery tube
It is connected with weighing balance, and weighing balance is electrical connected with sand pump.
Preferably, the movable plate lower end is connected with guide wheel, and guide rail corresponding with guide wheel is fixedly connected in the shell.
Preferably, the rigid reset item is by elastic steel strip, U-shaped steel item, firm steel bar and limit sliding steel bar composition, institute
It states U-shaped steel one end to be fixedly linked with elastic steel strip upper end, the elastic steel strip lower end offsets with bar lower end, the U-shaped steel
The other end is fixedly linked with firm steel bar and limit sliding steel bar, and the firm steel bar and limit sliding steel bar lower end are fixed
It is connected on movable plate, the limit sliding sleeve is slidably connected on limit sliding steel bar.
3. beneficial effect
Compared with the prior art, the present invention has the advantages that
(1) this programme when electrical break down, kelly is far from card slot, so that lifter plate is under the action of tension spring to moving up
It is dynamic, so that lifter plate drives limit sliding sleeve to move up, so that movable plate moves right under the action of rigid reset item, thus
Between the partition panel insertion static contact and moving contact of movable plate right end, to effectively be separated, effective closing isolation is connect
Contact, it is ensured that protective device is effectively protected in high energy ZnO valve block normal use.
(2) when circuit breaks down, thermal sensitive piece incudes zinc oxide valve plate temperature, and when the temperature is excessively high, thermal sensitive piece passes through
Spherical zone is pushed to move lever rotation, so that lever pulls drift sand adjustable plate by traction rope, thus the drift sand in upper drift sand glass marble
Weight in elevating glass ball is flowed into increase so that elevating glass ball moves down, thus elevating glass ball pass through it is upper
Triangle pushing block and lower triangle pushing block drive kelly to be detached from card slot, so that lifter plate moves up.
Detailed description of the invention
Fig. 1 is one of the schematic diagram of the section structure of the invention；
Fig. 2 is one of the schematic diagram of the section structure of the invention；
Fig. 3 is the structural schematic diagram that A goes out in Fig. 2；
Fig. 4 is adjusting glass tube big opening size adjustment structure schematic diagram of the invention；
Fig. 5 is the attachment structure schematic diagram of rigid reset item and lifter plate of the invention；
Fig. 6 is rigid reset structural schematic diagram of the invention；
Fig. 7 is operating circuit schematic diagram of the invention.
Figure label explanation:
1. shell, 2. bars, 3. guide wheels, 4. guide rails, 5. limit sliding sleeves, 6. connecting rods, 7. movable plates, 8. partition panels, 9. quiet
Contact, 10. thermal sensitive pieces, 11. fixed bottom plates, 12. push ball, 13. levers, 14. second mounting grooves, 15. first mounting grooves, 16.
Button, 17. tension springs, 18. lifter plates, 19. rigid reset items, 19-1. elastic steel strip, 19-2.U section steel bar, 19-3. consolidate steel
Item, 19-4. limit sliding steel bar, 20. sandlines, 21. sand pumps, 22. fixed plates, 23. first fixed pulleys, 24. reset springs,
25. sand tube, 28. weighing balances, 29. recovery tubes, 30. sand output lines, 31. elevating glass are taken out in the second fixed pulley, 26. traction ropes, 27.
Ball, 32. grooves, 33. springs, 34. kellies, 35. card slots, 36. lower triangle pushing blocks, triangle pushing block on 37., 38. fixed links,
39. lower drift sand glass marble 40. drift sand adjustable plates, 41. adjusts glass tubes, drift sand glass marble, 43. zinc oxide valve plates on 42..
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention；Technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description；Obviously；Described embodiments are only a part of the embodiments of the present invention；Instead of all the embodiments.It is based on
Embodiment in the present invention；It is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment；It shall fall within the protection scope of the present invention.
Embodiment 1:
Please refer to Fig. 1-6, a kind of transformer DC magnetic bias inhibition protective device, including shell 1 and zinc oxide valve plate 43, oxidation
Zinc valve block 43 is fixedly connected on 1 inner wall of shell, and fixed bottom plate 11 is fixedly connected in shell 1, is connected on fixed bottom plate 11
Thermal sensitive piece 10, zinc oxide valve plate 43 are located at the upper right side of thermal sensitive piece 10, are fixedly connected with static contact 9, temperature-sensitive on fixed bottom plate 11
It is fixedly connected with moving contact 42 corresponding with static contact 9 on piece 10, movable plate 7,7 right end of movable plate are slidably connected in shell 1
It is fixedly connected with partition panel 8, multiple rigid reset items 19 are fixedly connected on movable plate 7, are fixedly connected with gear on 1 inner wall of shell
Bar 2,19 left end of rigid reset item offset with bar 2, and the first mounting groove 15 is equipped in 1 upper end of shell, is slided in the first mounting groove 15
Dynamic to be connected with lifter plate 18,19 right end sliding sleeve of rigid reset item has limit sliding sleeve 5, and 18 right end of lifter plate passes through connecting rod 6
It is fixedly linked with limit sliding sleeve 5,18 upper end of lifter plate is fixedly linked by tension spring 17 and 1 inner wall of shell, and connection is interted on shell 1
There is button 16,16 lower end of button is fixedly linked with 18 upper end of lifter plate, and fluted 32 are opened up on shell 1, passes through bullet in groove 32
Spring 33 is connected with kelly 34, and card slot 35 corresponding with kelly 34 is offered on lifter plate 18, and kelly 34 is far from card slot 35, to rise
Drop plate 18 moves up under the action of tension spring 17, so that lifter plate 18 drives limit sliding sleeve 5 to move up, thus rigidly multiple
Movable plate 7 moves right under the action of the item 19 of position, thus the partition panel 8 of 7 right end of movable plate be inserted into static contact 9 and moving contact it
Between, thus effectively separated, it is effective to close isolation contact point, it is ensured that 43 normal use of high energy ZnO valve block has
The protection protective device of effect.
Lever 13 is rotatably connected in shell 1, the long end of lever 13, which is fixedly connected with, pushes ball 12, pushes ball 12 and thermal sensitive piece
10 upper left sides offset, and the second mounting groove 14 is offered on shell 1, is fixedly connected with drift sand glass marble 42 in the second mounting groove 14
With lower drift sand glass marble 39, upper 42 lower end of drift sand glass marble is connected by adjusting glass tube 41 with lower drift sand glass marble 39, is flowed down
Husky 39 lower end of glass marble is connected with recovery tube 29, adjusts and slidably connects drift sand adjustable plate 40 on glass tube 41, fixed on shell 1
It is connected with fixed plate 22, is connected by reset spring 24 with drift sand adjustable plate 40 on the left of fixed plate 22, is connected on 1 inner wall of shell
First fixed pulley 23 and the second fixed pulley 25,40 right end of drift sand adjustable plate are fixedly connected with traction rope 26, and traction rope 26 is far from stream
One end of husky adjustable plate 40 passes through fixed plate 22 and successively bypasses the first fixed pulley 23 and the second fixed pulley 25 and short with lever 13
End is connected, and slidably connects elevating glass ball 31 in lower drift sand glass marble 39, the lower end of elevating glass ball 31 is connected with sand output line
30, the diameter of sand output line 30 is less than the diameter for adjusting glass tube 41, is fixedly connected on the left of elevating glass ball 31 by fixed link 38
There is upper triangle pushing block 27,34 upper right side of kelly is fixedly connected with lower triangle pushing block 36 corresponding with upper triangle pushing block 27,
When circuit breaks down, thermal sensitive piece 10 is by pushing ball 12 that lever 13 is driven to rotate, so that lever 13 is drawn by traction rope 26
Dynamic drift sand adjustable plate 40, so that the drift sand in upper drift sand glass marble 42 is flowed into the increase of the weight in elevating glass ball 31, thus
So that elevating glass ball 31 moves down, so that elevating glass ball 31 passes through upper triangle pushing block 37 and lower 36 band of triangle pushing block
Dynamic kelly 34 is detached from card slot 35, so that lifter plate 18 moves up.
Sand pump 21 is fixedly connected in second mounting groove 14, sand pump 21 goes out husky end and passes through sandline 20 and upper drift sand glass
Glass ball 42 is fixedly linked, and 21 lower end of sand pump is connected by taking out sand tube 27 with recovery tube 29, and 29 inside bottom side of recovery tube is connected with
Weighing balance 28, and weighing balance 28 is electrical connected with sand pump 21, when the quicksand volume in recovery tube 29 is excessive, weighing balance 28 is measured
Weight, so that suction pump 21 works, drift sand under the action of taking out sand tube 27 and sandline 20 in recovery tube 29 is recovered to upstream
In husky glass marble 42, realizes and be recycled.
7 lower end of movable plate is connected with guide wheel 3, and guide rail 4 corresponding with guide wheel 3 is fixedly connected in shell 1, passes through guide wheel 3
The sliding for making movable plate 7 stable with guide rail 4.
Rigid reset item 19 is by elastic steel strip 19-1, U-shaped steel 19-2, firm steel bar 19-3 and limit sliding steel bar 19-4
Composition, the one end U-shaped steel 19-2 are fixedly linked with the upper end elastic steel strip 19-1, the lower end elastic steel strip 19-1 and 2 lower end phase of bar
It supports, the U-shaped steel 19-2 other end is fixedly linked with firm steel bar 19-3 and limit sliding steel bar 19-4, consolidates steel bar 19-3 and limit
The position lower end sliding steel bar 19-4 is fixedly connected on movable plate 7, and limit sliding sleeve 5 is slidably connected at limit sliding steel bar 19-4
On, elastic steel strip 19-1 has certain elastic restoring force, consequently facilitating pushing movable plate 7, U-shaped steel 19-2 and firm steel bar
19-3 ensures that rigid reset item 19 is firm and is connected on movable plate 7 that limit sliding steel bar 19-4 ensures that limit sliding sleeve 5 is steady
Fixed is slidably connected on limit sliding steel bar 19-4.
Working principle: under normal condition, the passage opening diameter for adjusting glass tube 11 is less than the diameter of sand output line 30, works as electricity
When road is broken down, thermal sensitive piece 10 incudes 43 temperature of zinc oxide valve plate, and when the temperature is excessively high, thermal sensitive piece 10 is by pushing spherical zone dynamic
Lever rotation, thermal sensitive piece 10 is by pushing ball 12 that lever 13 is driven to rotate, so that lever 13 pulls drift sand tune by traction rope 26
Plate 40 is saved, the opening diameter of glass tube 11 is adjusted, adjusts the diameter that 11 flow openings diameter of glass tube is greater than sand output line 30, thus
Drift sand in elevating glass ball 31 increases, so that the drift sand in upper drift sand glass marble 42 is flowed into the weight in elevating glass ball 31
Increase, so that elevating glass ball 31 moves down, so that elevating glass ball 31 passes through upper triangle pushing block 37 and lower triangle
Pushing block 36 drives kelly 34 to be detached from card slot 35, so that lifter plate 18 moves up, kelly 34 is far from card slot 35, to rise
Drop plate 18 moves up under the action of tension spring 17, so that lifter plate 18 drives limit sliding sleeve 5 to move up, in limit sliding sleeve 5
Under the collective effect of limit sliding steel bar 19-4, rigid reset item 19 moves right, in addition in the effect of elastic steel strip 19-1
Under further help in rigid reset item 19 and move right, so that movable plate 7 moves right under the action of rigid reset item 19,
To which the partition panel 8 of 7 right end of movable plate is inserted between static contact 9 and moving contact, thus effectively separated, it is effective to close
Contact point is isolated, it is ensured that protective device is effectively protected in 43 normal use of high energy ZnO valve block.
It is described above；It is merely preferred embodiments of the present invention；But scope of protection of the present invention is not limited thereto；
Anyone skilled in the art is in the technical scope disclosed by the present invention；According to the technique and scheme of the present invention and its
It improves design and is subject to equivalent substitution or change；It should be covered by the scope of protection of the present invention.
Claims (5)
1. a kind of transformer DC magnetic bias inhibits to use protective device, including shell (1) and zinc oxide valve plate (43), feature exists
In: the zinc oxide valve plate (43) is fixedly connected on shell (1) inner wall, is fixedly connected with fixed bottom plate in the shell (1)
(11), it is connected with thermal sensitive piece (10) on the fixed bottom plate (11), the zinc oxide valve plate (43) is located at the right side of thermal sensitive piece (10)
Top is fixedly connected with static contact (9) on the fixed bottom plate (11), is fixedly connected on the thermal sensitive piece (10) and static contact
(9) corresponding moving contact (42), the shell (1) is interior to be slidably connected movable plate (7), and movable plate (7) right end is fixed to be connected
It is connected to partition panel (8), multiple rigid reset items (19) is fixedly connected on the movable plate (7), are consolidated on shell (1) inner wall
Surely it is connected with bar (2), rigid reset item (19) left end offsets with bar (2), and first is equipped in shell (1) upper end
Mounting groove (15), first mounting groove (15) is interior to be slidably connected lifter plate (18), and rigid reset item (19) right end is sliding
Dynamic to be cased with limit sliding sleeve (5), lifter plate (18) right end is fixedly linked by connecting rod (6) and limit sliding sleeve (5), described
Lifter plate (18) upper end is fixedly linked by tension spring (17) and shell (1) inner wall, is interted on the shell (1) and is connected with button
(16), button (16) lower end is fixedly linked with lifter plate (18) upper end, opens up fluted (32), institute on the shell (1)
It states in groove (32) and is connected with kelly (34) by spring (33), offered on the lifter plate (18) corresponding with kelly (34)
Card slot (35).
2. a kind of transformer DC magnetic bias according to claim 1 inhibits to use protective device, it is characterised in that: the shell
(1) in be rotatably connected to lever (13), the long end of the lever (13) be fixedly connected with push ball (12), the promotions ball (12) and
Thermal sensitive piece (10) upper left side offsets, and offers the second mounting groove (14) on the shell (1), solid in second mounting groove (14)
Surely it is connected with drift sand glass marble (42) and lower drift sand glass marble (39), upper drift sand glass marble (42) lower end is by adjusting glass
Glass pipe (41) is connected with lower drift sand glass marble (39), and lower drift sand glass marble (39) lower end is connected with recovery tube (29), described
It adjusts and is slidably connected drift sand adjustable plate (40) on glass tube (41), be fixedly connected with fixed plate (22), institute on the shell (1)
It states and is connected by reset spring (24) with drift sand adjustable plate (40) on the left of fixed plate (22), is connected on shell (1) inner wall
First fixed pulley (23) and the second fixed pulley (25), drift sand adjustable plate (40) right end are fixedly connected with traction rope (26), institute
State traction rope (26) far from drift sand adjustable plate (40) one end pass through fixed plate (22) and successively bypass the first fixed pulley (23) and
Second fixed pulley (25) is simultaneously connected with lever (13) short end, slidably connects elevating glass ball in the lower drift sand glass marble (39)
(31), the lower end of the elevating glass ball (31) is connected with sand output line (30), and the diameter of the sand output line (30), which is less than, adjusts glass
The diameter of glass pipe (41), elevating glass ball (31) left side are fixedly connected with triangle pushing block by fixed link (38)
(27), kelly (34) upper right side is fixedly connected with lower triangle pushing block (36) corresponding with upper triangle pushing block (27).
3. a kind of transformer DC magnetic bias according to claim 2 inhibits to use protective device, it is characterised in that: described second
It is fixedly connected with sand pump (21) in mounting groove (14), the sand pump (21) goes out husky end and passes through sandline (20) and upper drift sand glass
Glass ball (42) is fixedly linked, and sand pump (21) lower end is connected by taking out sand tube (27) with recovery tube (29), the recovery tube
(29) internal bottom side is connected with weighing balance (28), and weighing balance (28) is electrical connected with sand pump (21).
4. a kind of transformer DC magnetic bias according to claim 1 inhibits to use protective device, it is characterised in that: the movement
Plate (7) lower end is connected with guide wheel (3), is fixedly connected with guide rail (4) corresponding with guide wheel (3) in the shell (1).
5. a kind of transformer DC magnetic bias according to claim 1 inhibits to use protective device, it is characterised in that: the rigidity
Reset bar (19) is by elastic steel strip (19-1), U-shaped steel item (19-2), firm steel bar (19-3) and limit sliding steel bar (19-4) group
At, described U-shaped steel item one end (19-2) is fixedly linked with the upper end elastic steel strip (19-1), the elastic steel strip lower end (19-1) with
Bar (2) lower end offsets, and U-shaped steel item (19-2) other end and firm steel bar (19-3) and limit sliding steel bar (19-4) are admittedly
Fixed to be connected, the firm steel bar (19-3) and limit sliding lower end steel bar (19-4) are fixedly connected on movable plate (7), described
Limit sliding sleeve (5) is slidably connected in limit sliding steel bar (19-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495777.8A CN110061485B (en) | 2018-05-22 | 2018-05-22 | Protection device for transformer direct current magnetic bias suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495777.8A CN110061485B (en) | 2018-05-22 | 2018-05-22 | Protection device for transformer direct current magnetic bias suppression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110061485A true CN110061485A (en) | 2019-07-26 |
| CN110061485B CN110061485B (en) | 2021-05-04 |
Family
ID=67315012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810495777.8A Active CN110061485B (en) | 2018-05-22 | 2018-05-22 | Protection device for transformer direct current magnetic bias suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110061485B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201438446U (en) * | 2009-07-24 | 2010-04-14 | 惠州电道科技有限公司 | Current overload protector |
| US8213139B2 (en) * | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN103065894A (en) * | 2011-10-24 | 2013-04-24 | 首瑞（北京）投资管理集团有限公司 | Contact system of breaker |
| CN107946153A (en) * | 2018-01-04 | 2018-04-20 | 常安集团有限公司 | Leakage circuit breakers |
-
2018
- 2018-05-22 CN CN201810495777.8A patent/CN110061485B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8213139B2 (en) * | 2008-09-12 | 2012-07-03 | Luen Ming Electric Works Company Limited | Leakage current protection plug and interrupt protection plug contact spring structure |
| CN201438446U (en) * | 2009-07-24 | 2010-04-14 | 惠州电道科技有限公司 | Current overload protector |
| CN103065894A (en) * | 2011-10-24 | 2013-04-24 | 首瑞（北京）投资管理集团有限公司 | Contact system of breaker |
| CN107946153A (en) * | 2018-01-04 | 2018-04-20 | 常安集团有限公司 | Leakage circuit breakers |
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| Publication number | Publication date |
|---|---|
| CN110061485B (en) | 2021-05-04 |
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