CN109036992A - A kind of shielding arc-suppressing method of breaker - Google Patents
A kind of shielding arc-suppressing method of breaker Download PDFInfo
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- CN109036992A CN109036992A CN201810897495.0A CN201810897495A CN109036992A CN 109036992 A CN109036992 A CN 109036992A CN 201810897495 A CN201810897495 A CN 201810897495A CN 109036992 A CN109036992 A CN 109036992A
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- breaker
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- shielding plate
- energy
- shielding
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009413 insulation Methods 0.000 claims abstract description 30
- 230000003068 static effect Effects 0.000 claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims abstract description 24
- 238000010891 electric arc Methods 0.000 claims abstract description 14
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 3
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 101000581533 Homo sapiens Methylcrotonoyl-CoA carboxylase beta chain, mitochondrial Proteins 0.000 description 5
- 102100027320 Methylcrotonoyl-CoA carboxylase beta chain, mitochondrial Human genes 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
A kind of shielding arc-suppressing method of breaker, the method is to install the shielding arc-control device with energy-stored spring additional in circuit breaker internal, when there is overload, short trouble or normal disjunction any load current value in route, shielding arc-control device movement is driven by energy-stored spring, insulation shielding plate is inserted between the static contact and moving contact of breaker, dynamic and static contact is reliably isolated by insulation shielding plate, so that electric arc be made to extinguish at the initial stage of generation；When breaker closes a floodgate again, energy-stored spring energy storage again is resetted and made by operation handle and corresponding transmission mechanism driving shielding arc-control device, is prepared to enter into subsequent work circulation.The present invention is acted using energy-stored spring driving shielding arc-control device, the dynamic and static contact of breaker is isolated at the initial stage that electric arc generates, electric arc is forced to extinguish rapidly, the amplification of arc energy is limited in this way, the reliable disjunction of breaker is realized, to improve the ability of breaker disjunction short circuit current and DC threshold load current.
Description
Technical field
When can effectively prevent breaker breaking current (including short circuit current) the present invention relates to one kind, dynamic and static contact it
Between generate the method for larger electric arc, belong to emergency protective device technical field.
Background technique
Miniature circuit breaker, moulded case circuit breaker (MCB, MCCB) be industry with it is important in civilian low-voltage distribution apparatus
Electric elements protect the overload and short trouble of distribution line mostly applied to the end of low-voltage distribution system or branch
And infrequently disjunction usually is carried out as switch.Wherein short trouble protection is its most important function, due to short trouble
When route short circuit current it is very big, it is very big that breaker can generate energy between its dynamic and static contact in disjunction short circuit current
Plasma arc (electric arc is conductive).In addition, in photovoltaic generating system or a variety of direct-flow distribution systems in application, except short circuit
Outside fault current, critical load current (although current value is little) is also not easy disjunction, only quick by certain technical measures
By arc extinction, breaker could complete the task of disjunction short circuit current or critical load current.
Currently, generated high temperature and high pressure electrical when MCB, MCCB are all made of arc-chutes technology to disjunction short circuit current both at home and abroad
Arc is cooled down and is extinguished, and the arc quenching principle of this technology is: when disjunction short circuit current, to generate electric arc between dynamic and static contact
And after elongation is accordingly amplified to certain length, energy, arc extinguishing is entered using magnetic field electro-dynamic force or other means driving high energy arc
Room makes to extinguish under the cooling effect of its metal grid in arc-chutes.The arc quenching effect of this method is by such as arc-chutes material
Material, contact cut-off the influences of the factors such as speed, clearance between open contacts, contact material, especially for the breaker of single-break structure,
The ability of disjunction short circuit current or DC threshold load current is poor, if it is desired to improving these performance parameters, manufacturing cost will
It greatly improves, and in the new energy such as tributaries such as photovoltaic DC system and rail traffic distribution system, direct-current short circuit electric current
Due to there is no the disjunction of zero passage process and its critical load current also extremely difficult, so that realizing these technical goal difficulty more
Greatly.
As the construction and generation of electricity by new energy and people of power distribution network especially DC distribution net are to electric network reliability requirement
Raising, need a kind of new breaker arc extinguishing method, objectively to greatly improve MCB, MCCB disjunction short circuit current or critical
The ability of load current, and realize product in the generalization of AC and DC field of power distribution.
Summary of the invention
It is an object of the invention to aiming at the disadvantages of the prior art, provide a kind of shielding arc-suppressing method of breaker, to mention
The ability of high breaker disjunction short circuit current and DC threshold load current.
Problem of the present invention is realized with following technical proposals:
A kind of shielding arc-suppressing method of breaker, the method are to install the shielding interrupter cartridge with energy-stored spring additional in circuit breaker internal
It sets, when overload, short trouble or normal disjunction any load current value occurs in route, shielding interrupter cartridge is driven by energy-stored spring
Movement is set, insulation shielding plate is inserted between the static contact and moving contact of breaker, it is by insulation shielding plate that dynamic and static contact is reliable
Isolation, so that electric arc be made to extinguish at the initial stage of generation；When breaker closes a floodgate again, pass through operation handle and corresponding driver
Structure driving shielding arc-control device resets and makes energy-stored spring energy storage again, is prepared to enter into subsequent work circulation.
The shielding arc-suppressing method of above-mentioned breaker, the shielding arc-control device includes dielectric shield, lock, tripping and company
Bar, the dielectric shield include insulation shielding plate, turning handle and hammerlock, and the centre of gyration of the turning handle is equipped with shaft, shaft branch
It holds on case for circuit breaker, energy storage torsional spring, the centre of gyration and movable contact of the turning handle, stationary contact place is additionally provided in shaft
Vertical line intersection；Insulation shielding plate part is corresponding with the sliding rail A being located on case for circuit breaker and can the left and right limit in sliding rail A
Between swing；One end of the insulation shielding plate is connected as one with hammerlock；The lock is turned by pivot pin and case for circuit breaker
Dynamic connection, is equipped with reduction torsion spring between lock and case for circuit breaker, and the tripping is connected by pin shaft H and case for circuit breaker rotation
It connects, the both ends of the connecting rod are rotatablely connected with the operation handle of tripping and breaker respectively, and when breaker closing, operation handle is logical
Connecting rod driving tripping rotation is crossed, tripping stirs the hook of hammerlock end, insulation shielding plate and turning handle is driven to overcome energy storage torsional spring
Resistance rotation, makes insulation shielding plate turn to the side of circuit breaker static contact, while latching in reduction torsion spring and acting on lower stuck lock
The halfpace G of arm side prevents insulation shielding plate from reversely rotating；When route appearance overload, short trouble or normal disjunction are any negative
When set current value, the actuating mechanism or magnetictrip mandril of breaker push lock rotation, make lock release hammerlock, insulation screen
Turning handle, hammerlock, insulation shielding plate in shield rotate under the driving of energy storage torsional spring, and insulation shielding plate is inserted into static contact and moving contact
Between gap, separate electric arc.
The shielding arc-suppressing method of above-mentioned breaker, the insulation shielding plate are equipped with sliding rail, and the sliding rail is arranged in breaker
On shell.
The present invention is acted using energy-stored spring driving shielding arc-control device, the initial stage that electric arc generates make breaker it is dynamic,
Static contact isolation, forces electric arc to extinguish rapidly, limits the amplification of arc energy in this way, realizes reliable point of breaker
It is disconnected, to improve the ability of breaker disjunction short circuit current and DC threshold load current.
Detailed description of the invention
Fig. 1 is MCB overall structure diagram (non-shielding state when dynamic and static contact closes a floodgate)；
Fig. 2 is MCB shielding arc-control device and schematic illustration (non-shielding state when dynamic and static contact closes a floodgate)；
Fig. 3 is MCB shielding arc-control device and schematic illustration (masked state when dynamic and static contact separating brake)；
Fig. 4 is the partial enlarged view in Fig. 2；
Fig. 5 is the partial enlarged view in Fig. 3；
Fig. 6 is dielectric shield schematic diagram；
Fig. 7 is the left view of Fig. 6；
Fig. 8 is buckle structure schematic diagram；
Fig. 9 is tripping structural schematic diagram.
Each label respectively indicates in figure are as follows: 1, case for circuit breaker；2, static contact；3, moving contact；4, dielectric shield；4-1,
Insulation shielding plate；4-2, turning handle；4-3, hammerlock；5, it latches；5-1, tapered end；5-2, upper unlocking arm；5-3, lower unlocking arm；6, it jumps
Button；6-1, slave arm；6-2, master arm；7, connecting rod；8, operation handle；9, actuating mechanism；10, magnetictrip；10-1, electricity
Magnetic release mandril；11, overlond trip element；12, arc-chutes；13, mechanism rod；14, tension spring；15, energy storage torsional spring；16, multiple
Position torsional spring；A, sliding rail；B, shaft；C, pivot pin；D, hook；E, axis；F, actuating mechanism hanging buckle point；G, halfpace；H, pin shaft.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
Attached drawing in being described below is the present invention in one of MCB embodiment, and those of ordinary skill in the art are come
It says, without creative efforts, can also be obtained according to these attached drawings other structure types.
Contact of breaker proposed by the present invention shields arc-suppressing method, its biggest characteristic is that one shielding arc-control device of setting,
When breaker is in "on" position, after receiving sub-gate signal, promptly insulation shielding plate can be inserted into dynamic and static
Between contact.
When breaker is closed a floodgate by switch knob or other modes, can while operational motion mechanism completes to close a floodgate,
The shielding arc-control device is driven to reset simultaneously energy storage, shielding when completing next separating brake prepares.
The sub-gate signal includes: any load that overload current, short-circuit current and normal disjunction occurs in route
Current value.
The embodiment of the present invention is that a shielding arc-control device by spring power drive is installed between the dynamic and static contact of MCB,
When overload current, short-circuit current occurs in route, and when normal disjunction any load current value, shielding arc-control device can be
It is acted rapidly under energy-stored spring power drive, insulation shielding plate is inserted between the static contact and moving contact of MCB, by insulation shielding plate
Dynamic and static contact is reliably isolated, so that electric arc be made to extinguish at the initial stage of generation.
When MCB closes a floodgate again by operation handle, shielding arc extinguishing is pulled by operation handle and corresponding transmission mechanism
Device resets and makes energy-stored spring (the energy storage torsional spring 15 i.e. in figure) energy storage again, is prepared to enter into subsequent work circulation.
Referring to Fig. 1-Fig. 5, shield arc-control device mainly include dielectric shield 4, energy storage torsional spring 15, lock 5, reduction torsion spring 16,
Tripping 6, connecting rod 7, sliding rail A, shaft B and pivot pin C.Wherein, dielectric shield 4 is by insulation shielding plate 4-1, turning handle 4-2 and hammerlock
4-3 is constituted.
Dielectric shield 4 and energy storage torsional spring 15 are mounted on the lower section of static contact 2 by shaft B, and dielectric shield 4 is exhausted
It is just swung counterclockwise in the sliding rail A that edge barricade 4-1 can be arranged on case for circuit breaker 1, when swing is at the end counterclockwise, before
End is inserted into the closed pockets being arranged in front of sliding rail A, is limited when clockwise oscillation is at the end by sliding rail A.Lock 5 and reset are turned round
Spring 16 is mounted on the right side of static contact 2 and the lower section of actuating mechanism 9 by pivot pin C, and the tapered end 5-1 and hammerlock 4-3 on lock 5 are right
The halfpace G of side is corresponding.
In MCB "on" position, dielectric shield 4 is in non-shielding state, and energy storage torsional spring 15 is in energy storage state, this
The halfpace G hanging buckle of the tapered end 5-1 and hammerlock 4-3 for being held against lock 5 of state are realized.When MCB due to circuit overload, short circuit or
When person realizes separating brake normal through 8 disjunction any load electric current of operation handle, actuating mechanism 9 and magnetictrip 10 can be triggered
Lock 5 overcomes its reduction torsion spring power counterclockwise, realizes the rapid tripping of lock 5 with dielectric shield 4, dielectric shield 4
The counterclockwise under the effect of energy storage torsional spring 15 will shield completely between the moving contact 3 opened simultaneously, static contact 2 be isolated rapidly,
Achieve the purpose that extinguish electric arc and reliable disjunction rapidly.
Wherein, operation handle 8 is rotated clockwise to open position under the action of therein torsional spring, while passing through connecting rod
7 push the master arm 6-2 of tripping 6, rotate clockwise tripping 6, the end slave arm 6-1 of tripping 6 reaches and the end hammerlock 4-3
The opposite position hook D (needing to have slight flexible deformation backward at the hook D of hammerlock 4-3 during this), be MCB next time
The reset of dielectric shield 4 is stirred when combined floodgate to be ready.
The method of several realizations shielding when breaker open operation is as follows:
1. when MCB needs separating brake since overload current occurs in route, overlond trip element 11(bimetallic material is heated backward
The bending of low bulk plane materiel material direction) in overload current effect thermal flexure is issued, by the pull rod pulling action mechanism 9 on the left of it,
So that it is threaded off at actuating mechanism hanging buckle point F and lose stabilization, actuating mechanism 9 is under the action of tension spring 14, centered on axis E rapidly
It rotates clockwise, drives 3 separating brake of moving contact.
When actuating mechanism 9 rotates clockwise, the upper unlocking arm 5-2 of its front end touching lock 5, makes lock 5 that reset be overcome to turn round
The halfpace G of the elastic force counterclockwise of spring 16, tapered end 5-1 and hammerlock 4-3 thread off, to make dielectric shield 4 in energy storage torsional spring
15 act on lower counterclockwise, realize shielding isolation processes completely；
2. the magnetictrip mandril 10-1 when MCB needs separating brake since short circuit current occurs in route, in magnetictrip 10
It is moved rapidly upward under electromagnetic field effect, pushes the lower unlocking arm 5-3 of lock 5,5 counterclockwises of lock make tapered end 5-1
It threads off with the halfpace G of hammerlock 4-3, to make the counterclockwise under the effect of energy storage torsional spring 15 of dielectric shield 4, realizes screen completely
Cover isolation processes.
Buckle releaser mandril 10-1 pushes actuating mechanism 9 simultaneously and rotates clockwise, it is made to thread off at actuating mechanism hanging buckle point F
Stabilization is lost, actuating mechanism 9 is rotated clockwise rapidly centered on axis E under the action of tension spring 14, drives 3 separating brake of moving contact；
3. operation handle 8 rotates clockwise, and works as attended operation when MCB is normal through operation handle disjunction any load electric current
Mechanism rod 13 among handle 8 and actuating mechanism 9 is rotated clockwise in the junction of operation handle 8 has passed through operation handle 8
After the line of 9 supporting point of the centre of gyration and actuating mechanism, actuating mechanism 9 is suitable rapidly centered on axis E under the action of tension spring 14
Hour hands rotation, drives 3 separating brake of moving contact.
When actuating mechanism 9 rotates clockwise, the upper unlocking arm 5-2 of its front end touching lock 5, makes lock 5 that reset be overcome to turn round
The halfpace G of the elastic force counterclockwise of spring 16, tapered end 5-1 and hammerlock 4-3 thread off, to make dielectric shield 4 in energy storage torsional spring
The lower rotation rapidly counterclockwise of 15 effects, realizes shielding isolation processes completely.
In MCB gate-dividing state, dielectric shield 4 is in masked state, and energy storage torsional spring 15 is in de-energized state.Work as MCB
When being closed a floodgate by operation handle 8, operation handle 8 passes through the active with tripping 6 while operational motion mechanism 9 completes to close a floodgate
The connecting rod 7 of arm 6-2 connection pulls tripping 6 using pin shaft H as center counterclockwise, the slave arm 6-1's and hammerlock 4-3 of tripping 6
Hook D overlap joint stirs dielectric shield 4 and rotates clockwise reset and energy storage, after the reset energy storage of dielectric shield 4 is stirred in tripping 6
Continuing a small amount of rotation makes the hook D of itself and hammerlock 4-3 break off relations, and shielding when completing MCB separating brake next time prepares.
The parts such as dielectric shield 4 and lock 5, tripping 6 are using high-intensitive, engineering plastic materials resistant to high temperature.It can guarantee
Technical requirements as defined in product standard.
It should be evident that method of the invention can be used for the breaker of diversified forms, as multiple structural forms MCB,
The products such as MCCB.
By shielding arc-suppressing method described in this application after various forms of MCB, MCCB products applications, it can obtain such as
Under technological progress:
1. the ability of product disjunction AC and DC short-circuit current can be greatly improved；
2. the problem of can solve effective disjunction critical load current difficult (especially DC threshold load current)；
3. being further amplified for arc energy can be limited in disjunction short-circuit current, fly so as to shorten product outward
Arc distance from or realize zero arcing；
4. the amplification of arc energy when due to can effectively limit disjunction short-circuit current, to may make part original deisgn product
In not recyclable thermoset plastic material substitute (thermosetting plastics material with recyclable thermoplastic material
Expect that intensity is greater than thermoplastic material), meet the related request of environment protection field.
Claims (3)
1. a kind of shielding arc-suppressing method of breaker, characterized in that the method is to install band energy-stored spring additional in circuit breaker internal
Shielding arc-control device, when overload, short trouble occurs in route or when normal disjunction load current value, is driven and is shielded by energy-stored spring
Arc-control device movement is covered, insulation shielding plate is inserted between the static contact (2) and moving contact (3) of breaker, by insulation shielding plate
Dynamic and static contact is reliably isolated, so that electric arc be made to extinguish at the initial stage of generation；When breaker closes a floodgate again, pass through manipulator
Handle (8) and corresponding transmission mechanism driving shielding arc-control device reset and make energy-stored spring energy storage again, are prepared to enter into next work
It recycles.
2. the shielding arc-suppressing method of breaker according to claim 1, characterized in that the shielding arc-control device includes exhausted
Edge shielding part (4), lock (5), tripping (6) and connecting rod (7), the dielectric shield (4) include insulation shielding plate (4-1), turn
Handle (4-2) and hammerlock (4-3), the centre of gyration of the turning handle (4-2) are equipped with shaft, shaft support on case for circuit breaker,
It is additionally provided in shaft energy storage torsional spring (15), the centre of gyration and the vertical line phase where movable contact, stationary contact of the turning handle (4-2)
It hands over；Insulation shielding plate (4-1) is corresponding with the sliding rail A of (1) is located on case for circuit breaker and can be between left and right limits in sliding rail A
It swings；One end of the insulation shielding plate (4-1) is connected as one with hammerlock (4-3)；The lock (5) by pivot pin (C) with
Case for circuit breaker (1) rotation connection, is equipped with reduction torsion spring (16) between lock (5) and case for circuit breaker (1), the tripping
(6) be rotatablely connected by pin shaft (H) and case for circuit breaker (1), the both ends of the connecting rod (7) respectively with tripping (6) and breaker
Operation handle (8) rotation connection, when breaker closing, operation handle (8) passes through connecting rod (7) driving tripping (6) rotation, tripping
(6) hook of the end hammerlock (4-3) is stirred, so that insulation shielding plate (4-1) and turning handle (4-2) be driven to overcome energy storage torsional spring (15)
Resistance rotation, so that insulation shielding plate (4-1) is turned to the side of circuit breaker static contact (2), while latching (5) in reduction torsion spring
(16) halfpace (G) that the side hammerlock (4-3) is blocked under acting on prevents insulation shielding plate (4-1) from reversely rotating；When route occurred
When load, short trouble or normal disjunction any load current value, the actuating mechanism (9) or magnetictrip mandril (10- of breaker
1) lock (5) rotation is pushed, makes to latch (5) release hammerlock (4-3), dielectric shield (4) includes turning handle (4-2), hammerlock (4-
3), insulation shielding plate (4-1) rotates under energy storage torsional spring (15) driving, and insulation shielding plate (4-1) is inserted into static contact (2) and dynamic touching
Gap between head (3) separates electric arc.
3. the shielding arc-suppressing method of breaker according to claim 2, characterized in that the insulation shielding plate (4-1) sets
Have corresponding sliding rail (A), the sliding rail (A) is fixed on case for circuit breaker (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897495.0A CN109036992B (en) | 2018-08-08 | 2018-08-08 | Shielding arc extinguishing method of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897495.0A CN109036992B (en) | 2018-08-08 | 2018-08-08 | Shielding arc extinguishing method of circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109036992A true CN109036992A (en) | 2018-12-18 |
| CN109036992B CN109036992B (en) | 2024-07-05 |
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ID=64632358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810897495.0A Active CN109036992B (en) | 2018-08-08 | 2018-08-08 | Shielding arc extinguishing method of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109036992B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718856A (en) * | 2019-09-20 | 2020-01-21 | 陆红阳 | Join in marriage net automatic arc control device |
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| CN204271021U (en) * | 2014-12-19 | 2015-04-15 | 常熟开关制造有限公司(原常熟开关厂） | With the breaker with double breaks and plastic case of disjunction screening arrangement |
| CN104637744A (en) * | 2015-03-05 | 2015-05-20 | 台安科技(无锡)有限公司 | Quick tripping mechanism for short-circuit of miniature circuit breaker |
| CN107359093A (en) * | 2017-08-23 | 2017-11-17 | 张珂 | A kind of shielding arc-suppressing method of contact of breaker |
| CN107359067A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of miniature circuit breaker with stronger arc extinguishing ability |
| CN107393780A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of miniature circuit breaker of strong breaking capacity |
| CN207529897U (en) * | 2017-11-10 | 2018-06-22 | 白真文 | Electric arc separating mechanism and breaker of plastic casing |
-
2018
- 2018-08-08 CN CN201810897495.0A patent/CN109036992B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102034617A (en) * | 2009-09-28 | 2011-04-27 | 伊顿公司 | Shield apparatus for circuit breaker |
| CN201812769U (en) * | 2010-09-29 | 2011-04-27 | 温州罗格朗电器有限公司 | Breaker with contact isolating device |
| CN103887124A (en) * | 2014-03-12 | 2014-06-25 | 科都电气有限公司 | Micro breaker |
| CN204271021U (en) * | 2014-12-19 | 2015-04-15 | 常熟开关制造有限公司(原常熟开关厂） | With the breaker with double breaks and plastic case of disjunction screening arrangement |
| CN104637744A (en) * | 2015-03-05 | 2015-05-20 | 台安科技(无锡)有限公司 | Quick tripping mechanism for short-circuit of miniature circuit breaker |
| CN107359093A (en) * | 2017-08-23 | 2017-11-17 | 张珂 | A kind of shielding arc-suppressing method of contact of breaker |
| CN107359067A (en) * | 2017-08-23 | 2017-11-17 | 河北宝凯电气股份有限公司 | A kind of miniature circuit breaker with stronger arc extinguishing ability |
| CN107393780A (en) * | 2017-08-23 | 2017-11-24 | 河北宝凯电气股份有限公司 | A kind of miniature circuit breaker of strong breaking capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110718856A (en) * | 2019-09-20 | 2020-01-21 | 陆红阳 | Join in marriage net automatic arc control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109036992B (en) | 2024-07-05 |
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