CN102938354A - Contact and arc extinction system of mold case circuit breaker - Google Patents
Contact and arc extinction system of mold case circuit breaker Download PDFInfo
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- CN102938354A CN102938354A CN2012104618875A CN201210461887A CN102938354A CN 102938354 A CN102938354 A CN 102938354A CN 2012104618875 A CN2012104618875 A CN 2012104618875A CN 201210461887 A CN201210461887 A CN 201210461887A CN 102938354 A CN102938354 A CN 102938354A
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Abstract
The invention relates to a contact and arc extinction system of a mold case circuit breaker. The system comprises an arc extinction gate slice group, a static conducting rod, a movable conducting rod, a movable conducting rod support, a movable conducting rod insulation sleeve and a multifunction insulation plugging piece. The front end of the multifunction insulation plugging piece covers a leg portion of the arc extinction gate slice group, and the rear end of the multifunction insulation plugging piece is an arc platform; the movable conducting rod insulation sleeve covers two side surfaces and the lower portion of the movable conducting rod, only a movable contact of the movable conducting rod is exposed, and the rear end of the movable conducting rod insulation sleeve is provided with an arc wing panel; the lower end of the movable conducting rod support is an arc portion which is matched with the arc platform at the rear end of the multifunction insulation plugging piece, and hot current generated in the breaking process can be prevented from diffusing towards the rear area of the breaker through a gap below the movable conducting rod support; and a slot is opened at the lower end of the movable conducting rod support, and when the movable conducting rod is detached, the arc wing panel of the movable conducting rod insulation sleeve can slide on the movable conducting rod to seal an opening between the movable conducting rod and the movable conducting rod support. According to the contact and arc extinction system, rear air current is sealed, air-blowing functions on an electric arc are enhanced, and breaking performances of the mold case circuit breaker are improved.
Description
[technical field]
The present invention relates to breaker technical field, particularly a kind of low-pressure plastic shell circuit breaker, it can prevent the slipstream that interrupting process electric arc produces, and strengthens gas blast arc-quenching, improves the break performance of circuit breaker.
[background technology]
Breaker of plastic casing is a kind of low-voltage circuit breaker of current-limiting type, is used for industrial low-voltage power distribution system and motor or other power consumption equipment circuit.In these systems, breaker of plastic casing can be guaranteed switching on and off under the desired nominal load of various users, automatic shutoff circuit under any abnormality (for example overload and short circuit), and make load fully and isolated from power by dynamic and static contact is separated.
It is the electrodynamic repulsion force that relies on the contact loop to produce at short circuit current that the current limliting of breaker of plastic casing disjunction short circuit current is cut-off function, make, fixed contact is before the operating mechanism action, scold out in advance and separate, after contact system separates, be added in moving, voltage between the fixed contact causes the air dielectric discharge and forms electric arc, electric arc is under magnetic field and airflow field driving, enter grating arc-extinguishing chamber, the grating arc-extinguishing chamber of circuit breaker is comprised of multi-disc iron railings sheet, after electric arc enters grating arc-extinguishing chamber, be divided into a series of short electric arcs, rely on the proximal pole pressure drop of each short electric arc, total arc voltage is significantly risen, outside surpassing, arc voltage executes supply voltage, the rising of electric current is pressed, and electric current reduces to zero under the effect of arc voltage, and makes electric arc blow-out before power supply process prerequisite.To drive the power that electric arc enters the grid sheet from the magnetic blow-out of above-mentioned blow-out process and air-blowing.Magnetic blow-out is to rely on the contact galvanic circle to form by the magnetic field that electric current produces, and air-blowing is because the high temperature of electric arc rises arc suppression chamber pressure, causes arc control device and extraneous mineralization pressure poor and produce.Traditional circuit breaker, except the arc control device front end has venthole, and its rear end is and mechanism, release and rear binding post link to each other gas channel are also arranged, thereby the interrupting process arc suppression chamber pressure forms forward and two strands of air-flows backward, air-flow promotes electric arc and moves forward into arc control device forward, and slipstream can stop electric arc to travel forward, and slipstream can pass metallic particles and high temperature free gas rearward, make operating mechanism block akinesia because of metallic particles, pass rearward with the free gas of metallic vapour, also can affect the circuit breaker insulation property, thereby how to eliminate and weaken the interrupting process slipstream be the key that improves the circuit breaker break performance.
[summary of the invention]
The object of the present invention is to provide a kind of breaker of plastic casing contact and arc quenching system, can effectively seal slipstream.
For achieving the above object, the present invention is achieved by the following technical solutions.
A kind of breaker of plastic casing contact and arc quenching system comprise: the arc extinguishing grid pieces group that multi-disc iron railings sheet forms; Be fixed on the fixed contact on the static conductive rod; Be fixed on the moving contact on the moving conductive rod; The moving conductive rod support of device moving conductive rod; Moving conductive rod insulating case with arcuated fin piece; The multifunction insulating plug-in unit; Multifunction insulating plug-in unit front end encases the shank of arc extinguishing grid pieces group, and the rear end is an arc platform; Insulating case is housed on the moving conductive rod, and moving conductive rod insulating case front end encases moving conductive rod two sides and bottom, only exposes moving contact, and the rear end is with an arcuated fin piece; The curved portions of moving conductive rod support lower end for matching with the arc platform of insulative inserts rear end, because both closely cooperate, the thermal current that can prevent interrupting process spreads to the circuit breaker rear area by the space of moving conductive rod support below, moving conductive rod support lower end also has a groove, when moving conductive rod is scolded out with moving contact, the arcuated fin piece of insulating case can slide thereon, seal the opening that moving conductive rod and moving conductive rod support occur, prevent that thermal current from passing through moving conductive rod support cavity and leaking backward.
The curved portions tolerance fit of the arc platform of multifunction insulating plug-in unit rear end and moving conductive rod support lower end; The groove tolerance fit of the arcuated fin piece of moving conductive rod insulating case and moving conductive rod support lower end.
The multifunction insulating plug-in unit is made by insulating material, its front end both sides form the flash barrier that encases arc extinguishing grid pieces group both sides shank inner surface, when circuit breaker cut-offs, move in the gap that moving contact forms in the middle of flash barrier, the electric arc that produces on the contact produces metallic vapour owing to the flash barrier effect makes electric arc can directly not corrode arc extinguishing grid pieces group shank, affects break performance; Narrow slit is squeezed electric arc on the other hand, is conducive to blow-out.
Gap between the curved portions of the arc platform of insulative inserts rear end and moving conductive rod support lower end is very little, can stop slipstream to flow to the arc control device rear.
The multifunction insulating plug-in unit by the are-tight gas exhausted material of insulation or not gas exhausted material be made.
Insulating case by the are-tight gas exhausted material of insulation or not gas exhausted material be made.
With respect to prior art, the present invention has the following advantages: the present invention not only has the effect of sealing rear air-flow; And and multifunction insulating plug-in unit first part energy shield grid sheet group shank, reduce metallic vapour And electric arc is had the narrow slit suppression, the insulating case upper end that the moving conductive rod insulating material is made can be limited electric arc and be stretched backward along moving conductive rod, if make of gas exhausted material, then behind arc erosion, produce hydrogeneous gas, can cool off and suppress electric arc, comprehensively these effects adopt the present invention can increase substantially the current limliting break performance of breaker of plastic casing.
[description of drawings]
Fig. 1 is breaker of plastic casing structural representation of the present invention.
Fig. 2 is three-phase moving conductive rod support schematic diagram.
Fig. 3 is the assembling schematic diagram of moving conductive rod and moving conductive rod support, and wherein 3a is graphics; 3b is the front view of Fig. 3 a; Fig. 3 c is the profile along A-A line among Fig. 3 b.
Fig. 4 is the structure chart of multifunction insulating plug-in unit.
Fig. 5 is the moving conductive rod insulating case schematic diagram with the circular arc fin, and wherein 5a is graphics; 5b is the installation diagram of Dao Dian Defend and insulating case.
Fig. 6 is moving conductive rod, multifunction insulating plug-in unit, moving conductive rod support, arc extinguishing grid pieces group and with the part assembling drawing of the front apron of gas outlet.
Fig. 7 is arc extinguishing grid pieces, and wherein 8a is the arc cutting part, becomes short electric arc in order to arc cutting; 8b is grid sheet shank, in order to increase contact regions magnetic field.
Fig. 8 is the model arc control device of doing contrast test.Wherein Fig. 8 a is narrow slit structure; Fig. 8 b is stop block structure; Fig. 8 c is the cross-sectional schematic of Fig. 8 a.
Fig. 9 is arc voltage and the current waveform of model arc control device result of the test.Wherein Fig. 9 a is narrow slit structure; Fig. 9 b is stop block structure.
Symbol represents respectively in the accompanying drawing: 1, breaker operator handle; 2, operating mechanism; 3, moving conductive rod support; 4, moving conductive rod; 5, moving conductive rod insulating case; 6, multifunction insulating plug-in unit; 7, static conductive rod; 8, arc extinguishing grid pieces; 9, terminals; 10, terminals; 11, release; 12 front aprons with the gas outlet; 13 moving contacts.101 is housing among Fig. 8 a and Fig. 8 c; 102 is the arc extinguishing grid pieces group; 103 are the baffle plate of giving vent to anger; 104 is the static conductive rod binding post; 105 is fixed contact; 106 is moving conductive rod; 107 for turning uranium; 108 is fixing pin; 109 is soft connection; 1010 is moving conductive rod lead-out wire binding post; 1011 is vertical convex; 1012 is block; 1013 is convex.
[embodiment]
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Referring to Fig. 1 and Fig. 3 a, the present invention is used for contact and the arc quenching system of low-pressure plastic shell circuit breaker, moving contact 13 is fixed on the moving conductive rod 4 among the figure, it and the contact system that is fixed on fixed contact on the static conductive rod 7 (among the figure No have draw) and has formed circuit breaker, moving conductive rod support 3 is rotating shafts of moving contact and moving conductive rod, it can be under operating mechanism 2 drives and rotate, realize separating brake and the combined floodgate of circuit breaker, cover has the insulating case 5 made from the insulating material of circular arc fin on the moving conductive rod 4, multi-disc iron railings sheet 8 forms the arc extinguishing grid pieces group in the arc control device, when electric arc under magnetic blow-out and air-blowing effect, when entering the arc extinguishing grid pieces group, be used for subdividing the arc and become the short electric arc of multistage, arc voltage is raise and realize that current limliting cut-offs, the multifunction insulating plug-in unit 6 of being made by insulating material and insulating case 5 match with the moving conductive rod support and work in the present invention to stop the behind air-flow.Among Fig. 1,1 is operating grip, and 9 and 10 is leading-out terminal, and 11 is release, and 12 are the front apron with the gas outlet.Moving contact rack 3 inside are a cavity 3d, as shown in Figure 2, moving conductive rod 4 inserts into the inner that (Fig. 3 a), Fig. 3 c is its profile, moving electric guide rod 4 is flexible fastening with support 3, when breaker closing, touch spring provides contact pressure by rotating shaft 3g, when short circuit current passes through, before operating mechanism not yet drives moving contact rack 3 rotation, with the moving contact of fixed contact closure under the electrodynamic repulsion force effect that short circuit current produces, overcome spring pressure, moving conductive rod 4 is counterclockwise rotated around axle 3g, and contact is scolded out, and the lower block 3f on the moving contact rack 3 is as the lower limit of moving conductive rod 4, and upper block 3e is the upper limit when scolding out as moving conductive rod 4, when moving contact 13 was scolded out, an opening appearred in 3 of moving conductive rod 4 and moving contact racks.
When circuit breaker cut-offs short circuit current, the electric arc that presents on the contact, because its high temperature causes the arc control device internal pressure suddenly to increase, the arc control device external and internal pressure can form two strands of outside air-flows.One is gas outlet 12 forwards, helps to drive electric arc and enters arc control device, and one not only can stop arc motion to the arc control device rear, and free gas diffuses to the rear, can affect the medium recovery after the arc current zero passage.In order to stop the rear air-flow, the present invention proposes a kind of multifunction insulating plug-in unit 6 of being made by insulating material, as shown in Figure 4, these insulative inserts 6 front ends are two flat boards with certain interval, be inserted between the both sides shank of arc extinguishing grid pieces group, form the flash barrier of shank, flash barrier encases the both sides shank of the arc extinguishing grid pieces group of arc extinguishing grid pieces 8 compositions, form a narrow slit 6c that can allow moving contact and moving conductive rod activity between two flash barrier 6b, its effect prevents on the one hand arc erosion grid sheet shank and produces the metallic vapour that is unfavorable for blow-out, narrow slit can allow electric arc be squeezed on the other hand, help blow-out, multifunction insulating plug-in unit 6 rears form an arc platform 6a, this arc platform 6a sees Fig. 2 with the arcwall face 3b(that moving conductive rod support 3 lower ends form) just in time cooperate, form a small gap (seeing Fig. 6) that only can allow moving conductive rod support 3 rotate, stop slipstream.Prevent another measure of slipstream; that cover has the insulating case 5 (seeing Fig. 5) of being made by insulating material on the moving conductive rod 4; there is an arcuated fin piece 5a at the rear portion of insulating case 5; after fixedly the moving conductive rod 4 of moving contact is scolded out in interrupting process; can seal the opening of moving conductive rod 4 and 3 appearance of moving conductive rod support; stop thermal current backward to enter the rear by the cavity of moving conductive rod support 3, and protection is arranged on the touch spring (seeing Fig. 3 c) in the cavity.When moving contact was scolded out, fin 5a slided (seeing Fig. 2) in the groove 3c of support 3 bottoms, and its surface is mutually smooth with the curved surface of support lower end, to keep the little gap between support and the multi-functional plug-in unit.The previous section 5b of insulating case 5 entangles two sides and the bottom of moving conductive rod 4, only expose moving contact 13, to prevent that electric arc from prolonging moving conductive rod at moving contact and extending back, insulating case 5 can be with rivet by hole 5c and moving conductive rod 4 fixing (seeing Fig. 5 b), and Fig. 6 is moving conductive rod, multifunction insulating plug-in unit, moving conductive rod support, arc extinguishing grid pieces group and with the part assembling drawing of the front apron of gas outlet; Multifunction insulating plug-in unit 6 previous sections are covered arc extinguishing grid pieces 8 shank 8b (seeing Fig. 7) as can be seen from Figure 6, the close-fitting situation of aft section arc platform and moving conductive rod support 3 bottoms.
Multifunction insulating plug-in unit 6 can be strengthened air-blowing cooling blast driving effect with the gas exhausted material making, but can increase arc suppression chamber pressure with are-tight aerogenesis and not gas exhausted material making with the moving conductive rod insulating case 5 with arcuated fin piece, requires shell that sufficient intensity is arranged.
In order to verify the effect that seals the rear air-flow, two kinds of single-break arc control device model structures such as Fig. 8 (a) have been designed and produced (b), its operation principle is scolded by electrodynamic repulsion force and is started contact, scolded at moving contact by fixing pin 108 and to pin moving conductive rod when reaching maximum position, make moving contact remain in large opening.Mode shape size 90 * 130 * 50(unit: mm), arc control device are of a size of 50 * 50 * 30(unit: mm), its middle shell 101 and block 1012 are unsaturated polyester (UP) mold materials (DMC), dynamic and static conducting rod and be flexible coupling and 109 be copper product, dynamic and static contact material is respectively AgC and AgW, grid sheet 102 is ferromagnetic materials surface nickel plating, and model is equipped with 12 sheet grating sheets and is staggered structure, and rotating shaft 107 and fixing pin 108 are Steel material.103 are the baffle plate of giving vent to anger among Fig. 8 a and Fig. 8 c; 104 is the static conductive rod binding post; 1010 is moving conductive rod lead-out wire binding post.
The characteristics of two kinds of structure arc control device are: the narrow slit structure that Fig. 8 (a) provides has vertical convex 1011 of 25mm below arc control device, shown in sectional view.Convex gap, both sides is that 5mm is as the moving conductive rod movement clearance, moving conductive rod thickness is 3mm, the middle slit that is formed by the both sides convex, can guarantee that fixedly the moving conductive rod 106 of moving contact can freely rotate in slit, although narrow slit structure has significantly been placed restrictions on air-flow behind, also there is certain gas leak phenomenon.The stop block structure that Fig. 8 (b) provides is on the narrow slit structure basis, be positioned at convex below, at the fixing block shown in the figure 1012 of moving conductive rod, block 1012 tops are circular-arc, have identical curvature with convex 1013 times along arc structure, and keep the gap of 1mm.The employing of stop block structure further increases the closure at arc control device rear, and the block quality is compared moving conductive rod and occupied very little ratio with the arm of force, not obvious to cut-offfing rate.
In this experiment, what the experiment electric current was provided is the single-frequency oscillation circuit, frequency of oscillation 50Hz, and prospective short circuit current the first half-wave effective value is 10kA, capacitor group charging voltage 500V.Fig. 9 is the experimental waveform that cut-offs in two kinds of arc quenching chamber structure 10kA short circuit current situations.
By Fig. 9 experimental result, two kinds of model arc control device interrupting process major parameters of table 1 contrast.Contrast two kinds of structures and cut-off the result, rear band stop block structure arc control device have obtained higher Dian Hu Dian Ya Mine value, reach 308V, improve 36V than narrow slit structure, and the simultaneously right arc time is 9.12ms only, has shortened 0.36ms.Advantageously to rise to the time of peak value be that 5.72ms has shortened 0.23ms than narrow slit structure to the arc voltage of stop block structure arc control device, this means that the stop block structure arc voltage has the higher rate of rise, has better current limiting performance.Its reason is that other structures of arc control device do not change, increase the closure at arc control device rear, can improve on the one hand the air pressure of arc control device, can keep on the other hand airflow field sensing gas outlet direction and the flow velocity that strengthens airflow field in the arc control device, thereby the effect of air-blowing power in the increase arc control device is conducive to cool off electric arc and drives electric arc enter the higher arc voltage of arc extinguishing grid pieces acquisition and cut-off effect.
Two kinds of rear structure arc control device of table 1 experimental result
The present invention not only has the effect of sealing rear air-flow; And and multifunction insulating plug-in unit first part energy shield grid sheet group shank, reduce metallic vapour And electric arc is had the narrow slit suppression, the insulating case first half that the moving conductive rod insulating material is made can limit electric arc and stretch backward along moving conductive rod, if make of gas exhausted material, then behind arc erosion, produce hydrogeneous gas, can cool off and suppress electric arc, comprehensive these effects adopt the present invention can increase substantially the current limliting break performance of breaker of plastic casing.
Use the breaker of plastic casing that the present invention also can scold out in a 250A fixed contact, on oscillation circuit, the phase electric current of giving is under the 15KA condition, and same circuit breaker adopts and do not adopt result of the test of the present invention as shown in table 2,
As seen: after same circuit breaker adopted the present invention, Dian Hu Dian Ya Mine value was brought up to 590v from 282V, and blowout voltage is brought up to 366V from 250v, and fair logical energy is reduced to 553776 from 1242472, and namely break performance increases substantially.
The same circuit breaker of table 2 adopts and does not adopt result of the test of the present invention
Above content is in conjunction with concrete preferred implementation further description made for the present invention; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of submitting to.
Claims (9)
1. a breaker of plastic casing contact and arc quenching system comprise: the arc extinguishing grid pieces group that multi-disc iron railings sheet forms, be fixed on fixed contact on the static conductive rod, be fixed on moving contact on the moving conductive rod and the moving conductive rod support of device moving conductive rod; The moving conductive rod support is driven by circuit breaker operation mechanism, can realize the breaking-closing operating of circuit breaker; It is characterized in that: between arc extinguishing grid pieces group and moving conductive rod support, a multifunction insulating plug-in unit is set; The rear end is with the moving conductive rod insulating case of an arcuated fin piece; Structure with multi-functional plug-in unit with the close-fitting moving conductive rod support of the moving conductive rod insulating case of fin, prevents slipstream that interrupting process form with realization with in shape.
2. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system, it is characterized in that: described multifunction insulating plug-in unit rear end is an arc platform.
3. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system, it is characterized in that: described multifunction insulating plug-in unit front end is two flat boards with certain interval, be inserted between the both sides shank of arc extinguishing grid pieces group, form the flash barrier of shank, the narrow slit that forms between two flat boards can allow moving contact in intermediate active.
4. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system, it is characterized in that: the upper end of described moving conductive rod insulating case encases moving conductive rod two sides and bottom, only exposes moving contact.
5. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system, it is characterized in that: the lower end of described moving conductive rod insulating case is with an arcuated fin piece.
6. a kind of breaker of plastic casing contact according to claim 2 and arc quenching system, it is characterized in that: there is the curved portions that matches with the arc platform of multifunction insulating plug-in unit rear end described moving conductive rod support lower end.
7. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system, it is characterized in that: described moving conductive rod support lower end has a groove, and the arcuated fin piece of moving conductive rod insulating case can slide thereon.
8. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system is characterized in that: described multifunction insulating plug-in unit by the are-tight gas exhausted material of insulation or not gas exhausted material be made.
9. a kind of breaker of plastic casing contact according to claim 1 and arc quenching system is characterized in that: described moving conductive rod insulating case by the are-tight gas exhausted material of insulation or not gas exhausted material be made.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210461887.5A CN102938354B (en) | 2012-11-15 | 2012-11-15 | Contact and arc extinction system of mold case circuit breaker |
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| CN201210461887.5A CN102938354B (en) | 2012-11-15 | 2012-11-15 | Contact and arc extinction system of mold case circuit breaker |
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| CN102938354B CN102938354B (en) | 2015-05-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500692A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Arc extinguishing device of circuit breaker |
| CN104538221A (en) * | 2014-11-17 | 2015-04-22 | 浙江天正电气股份有限公司 | Circuit breaker arc-control device and circuit breaker therewith |
| CN105206478A (en) * | 2015-08-05 | 2015-12-30 | 浙江凯发电气股份有限公司 | Device for accelerating repulsion of contacts of circuit breaker |
| CN107808806A (en) * | 2017-11-03 | 2018-03-16 | 浙江正泰电器股份有限公司 | Moving contact component and device for switching may be reversed |
| CN109036907A (en) * | 2018-09-30 | 2018-12-18 | 无锡新宏泰电器科技股份有限公司 | A kind of insulation flash barrier and the arc-chutes with it |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743961Y (en) * | 2004-11-11 | 2005-11-30 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing device for circuit breaker |
| CZ298548B6 (en) * | 2006-02-01 | 2007-10-31 | Oez, S. R. O. | Electroinsulating cover of moving contact carrier of electric appliance, particularly of power circuit breaker |
| CN201689852U (en) * | 2010-04-16 | 2010-12-29 | 江苏辉能电气有限公司 | Low-voltage circuit breaker movable contact structure with protecting part |
| CN102184814A (en) * | 2011-05-03 | 2011-09-14 | 江苏辉能电气有限公司 | Arc extinguishing equipment of moulded case circuit breaker |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
-
2012
- 2012-11-15 CN CN201210461887.5A patent/CN102938354B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2743961Y (en) * | 2004-11-11 | 2005-11-30 | 常熟开关制造有限公司(原常熟开关厂） | Arc extinguishing device for circuit breaker |
| CZ298548B6 (en) * | 2006-02-01 | 2007-10-31 | Oez, S. R. O. | Electroinsulating cover of moving contact carrier of electric appliance, particularly of power circuit breaker |
| CN201689852U (en) * | 2010-04-16 | 2010-12-29 | 江苏辉能电气有限公司 | Low-voltage circuit breaker movable contact structure with protecting part |
| CN102184814A (en) * | 2011-05-03 | 2011-09-14 | 江苏辉能电气有限公司 | Arc extinguishing equipment of moulded case circuit breaker |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500692A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Arc extinguishing device of circuit breaker |
| CN104538221A (en) * | 2014-11-17 | 2015-04-22 | 浙江天正电气股份有限公司 | Circuit breaker arc-control device and circuit breaker therewith |
| CN104538221B (en) * | 2014-11-17 | 2017-07-07 | 浙江天正电气股份有限公司 | Arc Distinguishing Device for Circuit Breakers and it is provided with the breaker of the Arc Distinguishing Device for Circuit Breakers |
| CN105206478A (en) * | 2015-08-05 | 2015-12-30 | 浙江凯发电气股份有限公司 | Device for accelerating repulsion of contacts of circuit breaker |
| CN107808806A (en) * | 2017-11-03 | 2018-03-16 | 浙江正泰电器股份有限公司 | Moving contact component and device for switching may be reversed |
| CN107808806B (en) * | 2017-11-03 | 2020-04-17 | 浙江正泰电器股份有限公司 | Turnable movable contact component and switching device |
| CN109036907A (en) * | 2018-09-30 | 2018-12-18 | 无锡新宏泰电器科技股份有限公司 | A kind of insulation flash barrier and the arc-chutes with it |
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|---|---|
| CN102938354B (en) | 2015-05-27 |
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