CN103426670B - Breaker contact arc extinguishing system - Google Patents
Breaker contact arc extinguishing system Download PDFInfo
- Publication number
- CN103426670B CN103426670B CN201310391769.6A CN201310391769A CN103426670B CN 103426670 B CN103426670 B CN 103426670B CN 201310391769 A CN201310391769 A CN 201310391769A CN 103426670 B CN103426670 B CN 103426670B
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- dividing plate
- plug
- contact
- 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
Abstract
The invention discloses a breaker contact arc extinguishing system which comprises a shell body and an arc extinguishing part located in the shell body. The arc extinguishing part comprises a plurality of arc extinguishing grid sheets and partition plates. The partition plates are made of insulation materials and are arranged on the two sides of the arc extinguishing grid sheets and enable the arc extinguishing grid sheets to be arranged in parallel and at intervals. Through holes communicated with two adjacent arc extinguishing spaces are formed in the partition plates. Blocking parts are arranged between the partition plates and the shell body. The through holes are communicated with cavities, where movable contacts and static contacts are located, through clearance between the partition plates and the shell body and are separated from an exhaust end through the blocking parts between the partition plates and the shell body. High-pressure gas located on the two sides of the arc extinguishing space enters the cavities, where the movable contact and the static contacts are located, through the through holes in the partition plates and clearance between the partition plates and the shell body so as to reduce the pressure of gas in the arc extinguishing space, improve the pressure of the cavities where the movable contacts and the static contacts are located, and quicken the moving speed of an electric arc in a running path. Consequently, the electric arc is made to be extinguished quickly.
Description
Technical field
The present invention relates to breaker arc extinguishing technical field, particularly relate to a kind of contact of breaker arc quenching system.
Background technology
When the dynamic/static contact in circuit breaker is separated because of faults such as circuit are short-circuited, can produce electric arc between dynamic/static contact, this electric arc has delayed the opening time of switch, reduces the break performance of switch, even can cause the serious scaling loss of the load in circuit.The metal vapors that electric arc is produced by scaling loss race arc passage and grid, the phenomenon of back commutation can be there is, namely electric arc just extinguishes after circuit breaker internal there will be repeatedly transfer repeatedly, which results in the repeatedly bust of arc voltage, extend the arcing time, reduce further the break performance of switch.For this reason, to improve the break performance of switch, the burning time shortening electric arc is crucial.
As Chinese patent document CN101047083A discloses a kind of contact of breaker arc quenching system and hybrid arc control device thereof, it comprises one group of arc extinguishing grid pieces, the fixed head for fixing arc extinguishing grid pieces position is respectively equipped with in the both sides of arc extinguishing grid pieces, also be provided with in the both sides of arc extinguishing grid pieces and make with insulating material, be heated and can produce the dividing plate of gas, to promote arc extinction.The direction of the arc channel of this invention only has one, after namely electric arc causes burning from dynamic/static contact, enters arc extinguishing grid pieces, after arc extinguishing grid pieces arc extinguishing, then discharges from the steam vent of grid afterbody.Although the insulating gas that the dividing plate of this invention produces can by acting on arc root and arc column, to improve the suppression to Arc Back Strike Phenomena, but in the process that electric arc burns at arc control device, the insulating gas that dividing plate produces can improve the pressure in arc control device, this pressure reduces the flowing velocity attracting the electric arc of coming from dynamic/static contact direction, and then make the RT of electric arc in space, dynamic/static contact place longer, impel in space, dynamic/static contact place and produce more metal vapors, Shi Paohu is more easily short-circuited in road, produce new electric arc, thus greatly reduce the break performance of switch.
Summary of the invention
For this reason, the technical problem to be solved in the present invention is to provide one can improve arc motion speed, shortens the burning time of electric arc, and then substantially increases the arc quenching system of switch break performance.
For achieving the above object, the present invention is by the following technical solutions:
A kind of contact of breaker arc quenching system, comprise housing, and be positioned at the arc-extinguishing unit of described housing, described arc-extinguishing unit comprises some arc extinguishing grid pieces, the gap-forming arc extinguishing space described in adjacent two between arc extinguishing grid pieces; Described arc extinguishing grid pieces is arc end close to one end of dynamic/static contact, and its relative other end is exhaust end; Also comprise dividing plate, described dividing plate is made up of insulating material, and described dividing plate is arranged on the both sides of described arc extinguishing grid pieces, and described arc extinguishing grid pieces parallel interval arranges by described dividing plate; Described dividing plate forms the through hole in arc extinguishing space described in through adjacent two, be provided with barrier portion between described dividing plate and described housing, described barrier portion is positioned between described through hole and described exhaust end, is suitable for isolating described through hole and described exhaust end; Described through hole is by the chamber at gap between described dividing plate and described housing and dynamic/static contact place.。
Described barrier portion is that the strip be arranged on described shell wall side is protruding, and described strip is protruding to be sealed and matched with described dividing plate, and the gap between described dividing plate with described housing is cut off into left and right two parts.
Described arc end forms striking mouth, and described housing is being provided with some arc end both sides from described arc extinguishing grid pieces close to described arc end place, and along the projection that described arc extinguishing space extends to described striking mouth, described projection is made up of insulating material.
Described projection extends to and stretches in described striking mouth.
Described projection is removably disposed in described inner walls.
Described housing is provided with some plugs at the described exhaust end close to described arc extinguishing grid pieces, described plug has Plug Division and guide portion, described Plug Division is plugged in described arc extinguishing space, described guide portion is positioned at outside described arc extinguishing space, and described plug is crisscross arranged along the vertical direction center line of described exhaust end place end face; Described in adjacent two, a described plug is set, described arc extinguishing space, one, interval between plug described in upper and lower two between arc extinguishing grid pieces.
Described plug is shaped to " T " character form structure, and the vertical portion in the middle of described " T " character form structure is described Plug Division, and the horizontal component of described " T " character form structure is described guide portion.
Described guide portion forms the exhaust guide surface extended outside described arc extinguishing space along described exhaust end, and described guide surface is obliquely installed up or down.
Preferably, the described plug being positioned at more than the horizontal central line of described exhaust end has described exhaust guide surface obliquely, and the described plug below the horizontal central line being positioned at described exhaust end has described exhaust guide surface obliquely.
Described housing comprises the pedestal and end cap that mutual clamping is sealed and matched, protruding, the described protruding one-body molded relevant position at described pedestal and end cap respectively of described plug, described strip.
Beneficial effect of the present invention:
1. the dividing plate of arc-extinguishing unit of the present invention is provided with the through hole in through adjacent two arc extinguishing spaces, and this through hole is by the chamber at the gap between dividing plate and housing and dynamic/static contact place; And the gap between dividing plate and housing, the position between through hole and arc extinguishing grid pieces exhaust end cuts off.In burning in the arc extinguishing space of electric arc between arc extinguishing grid pieces, can make in arc extinguishing space that when gases are heated, they expand, pressure becomes large, these gases at high pressure expand to surrounding, and the chamber at dynamic/static contact place is entered by the through hole on dividing plate and the gap between dividing plate and housing, improve the pressure of dynamic/static contact place chamber further, accelerate the movement velocity of electric arc to arc control device, thus greatly shorten the time of staying of electric arc in race arc passage, thus electric arc is extinguished rapidly.
2. housing of the present invention is provided with some both sides from arc extinguishing grid pieces, along arc extinguishing space to the projection that the axle center of arc extinguishing grid pieces extends, this projection is made up of insulating material, this projection is arranged on the striking mouth place of arc extinguishing grid pieces, and projection is extended to protrude from the arc extinguishing grid pieces at striking mouth place.After electric arc ignites from dynamic/static contact, under the attraction of arc extinguishing grid pieces, enter in arc extinguishing grid pieces carry out arc extinguishing from striking mouth, the striking grid being so located at striking mouth place is more easily subject to the scaling loss of high-temperature electric arc.By arranging the projection be made up of insulating material at striking mouth place, and make this projection give prominence to the arc extinguishing grid pieces with striking mouth place, so, what first electric arc touched is that insulation is protruding, and insulation projection is heated, insulation is protruding can produce plasticity gas in the process of being heated, and this plasticity gas is attached at arc extinguishing grid pieces surface on the one hand, effectively alleviates the scaling loss of irony grid; On the other hand, this plasticity gas can increase the pressure of dynamic/static contact place chamber, improves the movement velocity of electric arc to arc control device, shortens the time of staying of electric arc, thus improve the break performance of switch.
3. the plug being positioned at exhaust end of the present invention has the exhaust guide surface of inclination, compare existing gas in the horizontal direction and discharge mode, the present invention extends the cooling time of Exhaust Gas in exhaust passage, further reduce the possibility producing arc short circuit in exhaust ports, thus improve the break performance of switch.Further, the plug in the present invention more than horizontal central line, has exhaust guide surface obliquely, and the described plug below the horizontal central line being positioned at described exhaust end has exhaust guide surface obliquely.A gas part of discharging from exhaust end is discharged obliquely, and another part obliquely, makes whole arc control device be vented evenly, and make exhaust passage be vented steadily cooling fast, switch reliability obtains and improves further.
Accompanying drawing explanation
In order to make the content of invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of arc-extinguishing unit of the present invention;
Fig. 2 is the structural representation of pedestal of the present invention;
Fig. 3 is the structural representation of end cap of the present invention;
Fig. 4 is the structural representation that projection of the present invention coordinates with housing with plug;
Fig. 5 be projection on striking mouth place of the present invention housing with arc extinguishing grid pieces coordinate schematic diagram;
Fig. 6 be plug and the arc extinguishing space of exhaust end of the present invention coordinate schematic diagram;
Fig. 7 is the partial enlarged drawing at A position in Fig. 2;
In figure, Reference numeral is expressed as:
1-arc extinguishing grid pieces; 11-arc extinguishing space; 12-striking mouth; 2-dividing plate; 21-through hole; 3-housing; 31-strip is protruding; 32-is protruding; 33-pedestal; 34-end cap; 4-plug; 41,42-is vented guide surface; 43-Plug Division; 44-guide portion.
Embodiment
See Fig. 1, Fig. 2, contact of breaker arc quenching system of the present invention, comprises housing 3, and is positioned at the arc-extinguishing unit of described housing 3, and described arc-extinguishing unit comprises, some arc extinguishing grid pieces 1, the gap-forming arc extinguishing space 11 described in adjacent two between arc extinguishing grid pieces 1; One end close to dynamic/static contact of described arc extinguishing grid pieces 1 is arc end, and its relative other end is exhaust end; And dividing plate 2, described dividing plate 2 is made up of insulating material, and described dividing plate 2 is arranged on the both sides of described arc extinguishing grid pieces 1, and described arc extinguishing grid pieces 1 parallel interval arranges by described dividing plate 2; Described dividing plate 2 forms the through hole 21 in arc extinguishing space 11 described in through adjacent two, between described dividing plate 2 and described housing 3, be provided with barrier portion; Described through hole 21 is by the chamber at the gap between described dividing plate 2 and described housing 3 and dynamic/static contact place, and described through hole 21 is cut off with described exhaust end between described dividing plate 2 and described housing 3 by described barrier portion.
Described through hole 21 in the present embodiment is by strip through hole through for all arc extinguishing spaces, and described through hole 21 is arranged along the short transverse of described dividing plate 2, and described through hole 21 is arranged on the middle part of described dividing plate 2.Because described through hole 21 is the through hole of strip, described arc extinguishing space 11 is conducive to be discharged rapidly near the gases at high pressure of dividing plate 2, and reached the chamber at dynamic/static contact place in time rapidly by the gap between dividing plate 2 and housing 3, thus the pressure that effectively prevent in arc extinguishing space is excessive.Certainly, according to the size of the rated power of concrete circuit breaker, described through hole 21 of the present invention also can be arranged to other form, such as, can be set to be communicated with two or more arc extinguishing space 11 respectively by multiple described through hole 21 form, described multiple through hole 21 is all communicated with by the space of the interval between described dividing plate 2 and described housing 3 with described dynamic/static contact place, and is cut off by described barrier portion and described exhaust end.When the electric arc in described arc extinguishing space 11 expands because of burning time, described through hole 21 can will guide to rapidly the chamber at dynamic/static contact place by the gap between described dividing plate 2 and described housing 3 near the gases at high pressure of both sides dividing plate in the middle part of described arc extinguishing space 11, can prevent inside, described arc extinguishing space 11 from hindering the electric arc in space, dynamic/static contact place to arc extinguishing indoor sport because of hypertonia on the one hand, the pressure in space, dynamic/static contact place can also be improved on the other hand further, promote that electric arc is from striking mouth 12 to arc extinguishing indoor sport, to shorten the time of staying of electric arc, thus raising arc quenching effect.
The size of described through hole 21 should be determined according to the rated power size of concrete switch, can not only discharge in time and by the excess pressure gas of both sides, described arc extinguishing space like this, can also keep there is suitable pressure to promote that electric arc is discharged to exhaust end in arc extinguishing space simultaneously
See Fig. 2-3, in the present embodiment, described barrier portion is arranged at the strip projection 31 on described housing 3 wall, described strip protruding 31 is sealed and matched with described dividing plate 2, and the gap between described dividing plate 2 with described housing 3 is cut off into left and right two parts, namely also described strip 31 has cut off described through hole 21 and has been communicated with described exhaust end.As the mode that other can be implemented, through hole 21 and exhaust end also can, for being arranged at the projection on described dividing plate 2, as long as it can realize being sealed and matched with described housing 3, carry out isolating by described barrier portion.
See Fig. 4-5, described arc end in the present embodiment forms striking mouth 12, described housing 3 is being provided with some arc end both sides from described arc extinguishing grid pieces 1 close to described arc end place, along the projection 32 that described arc extinguishing space 11 extends to described striking mouth 12, described protruding 32 are made up of insulating material, and make described protruding 32 to extend to stretch in described striking mouth 12, when so just can ensure that electric arc enters described striking mouth 12, what first touch is protruding 32, thus effectively reduce the scaling loss degree of described electric arc grid 1, extend its useful life.
Due to long use, described protruding 32 will be damaged at first, and for the ease of changing, described protruding 32 are removably disposed on described housing 3 inwall, so then only need change protruding 32, and without the need to changing whole housing 3, so just can be cost-saving.
See Fig. 4, Fig. 6-7, described housing in the present embodiment is provided with some plugs 4 at the described exhaust end close to described arc extinguishing grid pieces 1, described plug 4 has Plug Division 43 and guide portion 44, described Plug Division 43 is plugged in described arc extinguishing space 11, described guide portion 44 is positioned at outside described arc extinguishing space 11, and described plug 4 is crisscross arranged along the vertical direction center line of described exhaust end place end face; A described plug 4 is set between arc extinguishing grid pieces described in adjacent two, described arc extinguishing space 11, one, interval between plug 4 described in upper and lower two.
In the present embodiment, described plug 4 is shaped to " T " character form structure, and the vertical portion in the middle of described " T " character form structure is described Plug Division 43, and the horizontal component of described " T " character form structure is described guide portion 44.Described guide portion 43 forms the exhaust guide surface extended outside described arc extinguishing space 11 along described exhaust end, described guide surface is obliquely installed up or down, after described arc extinguishing end enters exhaust passage, stroke is cooled to extend described electric arc, reduce the possibility that exhaust end electric arc causes short circuit again, and then improve the break performance of switch.Further, in order to improve the exhaust efficiency of exhaust end, the described plug 4 being positioned at more than the horizontal central line of described exhaust end has described exhaust guide surface 41 obliquely, and the described plug 4 below the horizontal central line being positioned at described exhaust end has described exhaust guide surface 42 obliquely.
See Fig. 2-3, described housing 3 comprises the pedestal 33 and end cap 34 that mutual clamping is sealed and matched.And when casting described housing 3 in order to enhance productivity, also be convenient to the assembling of whole circuit breaker, the described plug 4 in the present invention, described strip projection 31, described protruding 32 can the one-body molded relevant positions at described pedestal 33 and end cap 34 respectively simultaneously.Certainly, for the ease of maintain and replace etc., described plug 4 in the present embodiment, described protruding 32 also can be dismountable being arranged on described housing 3 inwall.And above-mentioned two kinds of modes all belong to protection scope of the present invention.。
Above-mentioned embodiment is just explained in detail technical scheme of the present invention, and the present invention has more than and is only confined to above-described embodiment.It will be understood by those skilled in the art that every improvement on basis of the present invention according to above-mentioned principle and spirit, substitute, all should within protection scope of the present invention.
Claims (10)
1. a contact of breaker arc quenching system, comprise housing (3), and be positioned at the arc-extinguishing unit of described housing (3), described arc-extinguishing unit comprises,
Some arc extinguishing grid pieces (1), the gap-forming arc extinguishing space (11) described in adjacent two between arc extinguishing grid pieces (1); Described arc extinguishing grid pieces (1) is arc end close to one end of dynamic/static contact, and its relative other end is exhaust end;
Dividing plate (2), described dividing plate (2) is made up of insulating material, and described dividing plate (2) is arranged on the both sides of described arc extinguishing grid pieces (1), and described arc extinguishing grid pieces (1) parallel interval arranges by described dividing plate (2);
It is characterized in that: the through hole (21) described dividing plate (2) forming arc extinguishing space (11) described in through adjacent two, barrier portion is provided with between described dividing plate (2) and described housing (3), described barrier portion is positioned between described through hole (21) and described exhaust end, is suitable for isolating described through hole (21) and described exhaust end; Described through hole (21) is by the chamber at the gap between described dividing plate (2) and described housing (3) and dynamic/static contact place.
2. a kind of contact of breaker arc quenching system according to claim 1, it is characterized in that: described barrier portion is for being arranged at the strip projection (31) on described housing (3) wall, described strip projection (31) and described dividing plate (2) are sealed and matched, and the gap between described dividing plate (2) with described housing (3) is cut off into left and right two parts.
3. a kind of contact of breaker arc quenching system according to claim 2, it is characterized in that: described arc end forms striking mouth (12), described housing (3) is being provided with some arc end both sides from described arc extinguishing grid pieces (1) close to described arc end place, along the projection (32) that described arc extinguishing space (11) extends to described striking mouth (12), described projection (32) is made up of insulating material.
4. a kind of contact of breaker arc quenching system according to claim 3, is characterized in that: described projection (32) extends to and stretches in described striking mouth (12).
5. a kind of contact of breaker arc quenching system according to claim 3, is characterized in that: described projection (32) is removably disposed on described housing (3) inwall.
6. a kind of contact of breaker arc quenching system according to claim 3, it is characterized in that: described housing is provided with some plugs (4) at the described exhaust end close to described arc extinguishing grid pieces (1), described plug (4) has Plug Division (43) and guide portion (44), described Plug Division (43) is plugged in described arc extinguishing space (11), described guide portion (44) is positioned at described arc extinguishing space (11) outside, and described plug (4) is crisscross arranged along the vertical direction center line of described exhaust end place end face; A described plug (4) is set between arc extinguishing grid pieces described in adjacent two, the described arc extinguishing space (11) in one, interval between plug (4) described in upper and lower two.
7. a kind of contact of breaker arc quenching system according to claim 6, it is characterized in that: described plug (4) is shaped to " T " character form structure, vertical portion in the middle of described " T " character form structure is described Plug Division (43), and the horizontal component of described " T " character form structure is described guide portion (44).
8. a kind of contact of breaker arc quenching system according to claim 7, it is characterized in that: described guide portion (44) forms the exhaust guide surface extended to described arc extinguishing space (11) outside along described exhaust end, and described exhaust guide surface is obliquely installed up or down.
9. a kind of contact of breaker arc quenching system according to claim 8, it is characterized in that: the described plug (4) being positioned at more than the horizontal central line of described exhaust end has described exhaust guide surface (41) obliquely, the described plug (4) below the horizontal central line being positioned at described exhaust end has described exhaust guide surface (42) obliquely.
10. according to the arbitrary described a kind of contact of breaker arc quenching system of claim 6-9, it is characterized in that: described housing (3) comprises the pedestal (33) and end cap (34) that mutual clamping is sealed and matched, described plug (4), described strip projection (31), described projection (32) be the one-body molded relevant position at described pedestal (33) and end cap (34) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391769.6A CN103426670B (en) | 2013-09-02 | 2013-09-02 | Breaker contact arc extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310391769.6A CN103426670B (en) | 2013-09-02 | 2013-09-02 | Breaker contact arc extinguishing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103426670A CN103426670A (en) | 2013-12-04 |
| CN103426670B true CN103426670B (en) | 2015-06-24 |
Family
ID=49651268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310391769.6A Expired - Fee Related CN103426670B (en) | 2013-09-02 | 2013-09-02 | Breaker contact arc extinguishing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103426670B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609387B (en) * | 2016-03-09 | 2018-07-27 | 苏州未来电器股份有限公司 | A kind of miniature circuit breaker and its arc-control device |
| CN105845524B (en) * | 2016-05-31 | 2018-09-07 | 乐清市也为电气有限公司 | A kind of arc extinguishing exhaust system of miniature circuit breaker |
| CN109741998B (en) * | 2019-02-27 | 2024-01-09 | 武汉司德宝电气有限公司 | Circuit breaker |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251533A1 (en) * | 2001-04-19 | 2002-10-23 | Schneider Electric Industries SAS | Integral diffuser for an electrical switching device |
| CN1734692A (en) * | 2004-08-13 | 2006-02-15 | 上海电器科学研究所（集团）有限公司 | Screen plate for deionization gas, deionization gas apparatus equipped with the same and arc extinguishing chamber |
| CN101320663A (en) * | 2008-07-16 | 2008-12-10 | 乐星产电(无锡)有限公司 | Arc extinguishing chamber for breaker |
| CN102290300A (en) * | 2011-07-07 | 2011-12-21 | 西安交通大学 | Grid arc extinguish chamber for low voltage circuit breaker |
| CN102368451A (en) * | 2011-10-28 | 2012-03-07 | 法泰电器（江苏）股份有限公司 | Arc extinguish chamber device for circuit breaker |
| CN102446642A (en) * | 2011-10-28 | 2012-05-09 | 常熟市瑞特电器有限责任公司 | Zero arc extinguishing device |
| CN203397967U (en) * | 2013-09-02 | 2014-01-15 | 浙江大华开关厂 | Arc extinguishing system of breaker contact |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009070601A (en) * | 2007-09-11 | 2009-04-02 | Mitsubishi Electric Corp | Circuit breaker |
-
2013
- 2013-09-02 CN CN201310391769.6A patent/CN103426670B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1251533A1 (en) * | 2001-04-19 | 2002-10-23 | Schneider Electric Industries SAS | Integral diffuser for an electrical switching device |
| CN1734692A (en) * | 2004-08-13 | 2006-02-15 | 上海电器科学研究所（集团）有限公司 | Screen plate for deionization gas, deionization gas apparatus equipped with the same and arc extinguishing chamber |
| CN101320663A (en) * | 2008-07-16 | 2008-12-10 | 乐星产电(无锡)有限公司 | Arc extinguishing chamber for breaker |
| CN102290300A (en) * | 2011-07-07 | 2011-12-21 | 西安交通大学 | Grid arc extinguish chamber for low voltage circuit breaker |
| CN102368451A (en) * | 2011-10-28 | 2012-03-07 | 法泰电器（江苏）股份有限公司 | Arc extinguish chamber device for circuit breaker |
| CN102446642A (en) * | 2011-10-28 | 2012-05-09 | 常熟市瑞特电器有限责任公司 | Zero arc extinguishing device |
| CN203397967U (en) * | 2013-09-02 | 2014-01-15 | 浙江大华开关厂 | Arc extinguishing system of breaker contact |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103426670A (en) | 2013-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206401213U (en) | Contact of breaker arc initiation device | |
| CN103426670B (en) | Breaker contact arc extinguishing system | |
| CN201532915U (en) | Arc extinguish chamber used for low-voltage circuit breaker | |
| CN104810222B (en) | The arc-chutes of a kind of fast arc extinction and apply the miniaturization chopper of these arc-chutes | |
| CN203397967U (en) | Arc extinguishing system of breaker contact | |
| CN205081084U (en) | Good miniature circuit breaker of arc extinguishing performance | |
| CN204257458U (en) | Arc extinguishing system of circuit breaker | |
| CN106098438A (en) | One has high breaking capacity arc quenching system | |
| CN206179719U (en) | Take explosion chamber of free device that disappears | |
| CN202977343U (en) | Mixed grating-sheet explosion chamber of breaker and low-voltage breaker | |
| CN203644715U (en) | Improved arc-quenching chamber for circuit breaker | |
| CN216084776U (en) | Arc extinguishing system and circuit breaker | |
| CN206672869U (en) | Open type high-voltage DC relay | |
| CN205081028U (en) | Conventional circuit -breaker arc control device | |
| CN108010769A (en) | A kind of arc-extinguishing chamber of circuit breaker | |
| CN202917419U (en) | Direct current breaker with double arc-isolating plates | |
| CN110957195B (en) | Contact arc extinguishing device of circuit breaker | |
| CN208460609U (en) | A kind of arc-chutes of breaker | |
| CN208848784U (en) | A kind of Arc Distinguishing Device for Circuit Breakers | |
| CN205645728U (en) | Miniature circuit breaker's arc extinguishing structure | |
| CN206040582U (en) | Arc extinguishing device and contains this device for moulded case circuit breaker | |
| CN105742135A (en) | Exhaust arc extinguishing system for leakage current breaker | |
| CN203205287U (en) | Arc extinguishing device | |
| CN207149504U (en) | A kind of Minitype electrical leakage breaker N poles arc quenching system | |
| CN207966905U (en) | A kind of miniature circuit breaker arc-chutes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 325604 No. 86 long march road, Liushi Town, Zhejiang, Yueqing Applicant after: Zhejiang Dahua Electric Co., Ltd. Address before: 325604, No. 9, Temple Road, Xinguang industrial district, Liushi Town, Zhejiang, Yueqing Applicant before: Zhejiang Dahua Switchgear Factory |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: ZHEJIANG DAHUA SWITCH FACTORY TO: ZHEJIANG DAHUA ELECTRIC CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20190902 |