CN102347175A - Electronic releaser for molded case circuit breaker - Google Patents
Electronic releaser for molded case circuit breaker Download PDFInfo
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- CN102347175A CN102347175A CN2010102417336A CN201010241733A CN102347175A CN 102347175 A CN102347175 A CN 102347175A CN 2010102417336 A CN2010102417336 A CN 2010102417336A CN 201010241733 A CN201010241733 A CN 201010241733A CN 102347175 A CN102347175 A CN 102347175A
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- armature
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Abstract
The invention discloses an electronic releaser for a molded case circuit breaker. The electronic releaser comprises a casing, a busbar (4), a mutual inductor (5), an armature (7), a magnetic yoke (6), a traction rod (15) and a magnetic flux converter (13); the busbar (4) passes through a mutual inductor through hole (23) and an armature through hole (25); the armature (7) is connected with the casing by a tension spring (14); the magnetic yoke (6) is positioned on the busbar (4) and opposite to the armature (7); the traction rod (15) on which a first bump (51) and a second bump (52) are arranged can be rotatably connected on the casing; the first bump (51) is in contact with the magnetic flux converter (13); and the second bump (52) is in contact with the armature (7). The armature action of the electronic releaser provided by the invention can be accomplished within only a few milliseconds with high reaction speed; the burnouts of the equipment and the circuit, caused by a higher current in a short circuit fault, for a long time can be effectively avoided; and the securities of the equipment and workers are ensured.
Description
Technical field
The present invention relates to a kind of electronic trip unit, particularly a kind of electronic trip unit that is used for the rotating dual-breakpoint electronic type molded case circuit breaker.
Background technology
Be applied in the electronic trip unit in the breaker of plastic casing, can play good protection overload and short circuit, but and the many communications of function, intellectuality, be applied to field of circuit breakers more and more widely.Breaker of plastic casing has single-break and two kinds of patterns of double break electricity, and the electronic trip unit structure of single-breakpoint molded case circuit breaker nearly all has the quick electromagnetic iron construction, and the electronic trip unit of rotating dual-breakpoint breaker of plastic casing does not almost have the quick electromagnetic iron construction.If electronic molded case circuit breakers does not have flash electromagnet; When big short circuit current occurring, lean on time that wiring board triggers the magnetic flux action about twenties milliseconds, this short circuit current might burn out equipment and circuit in this operate time; Make the breaker of plastic casing blast when serious, jeopardize life safety.
Summary of the invention
To the deficiency of above-mentioned prior art, the technical problem that the present invention will solve provide a kind of can be when big short circuit current takes place the electronic trip unit of fast cut-off circuit.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of electronic trip unit that is used for breaker of plastic casing; Comprise housing, bus, instrument transformer and magnetic flow convertor; Said instrument transformer is provided with an instrument transformer through hole; Said bus passes said instrument transformer through hole, and said instrument transformer, magnetic flow convertor are positioned on the said housing, and said magnetic flow convertor is connected with said instrument transformer; It also comprises: armature; Said armature is provided with an armature through hole, and said bus passes said armature through hole, and said armature is connected with said housing through an extension spring; Yoke, said yoke are positioned on the said bus, and said yoke is relative with said armature; Draw bar; Said draw bar is rotating to be connected on the said housing, and said draw bar is provided with first convexity, second convexity, and said first convexity contacts with said magnetic flow convertor; Said second convexity contacts with said armature, also is provided with a reduction torsion spring on the said draw bar.
Preferably, said bus is " Z " font, and said armature through hole is passed in the upper end of said bus, and said instrument transformer through hole is passed in the lower end of said bus.
Preferably, said draw bar is provided with the 3rd convexity, and an end of said reduction torsion spring acts on the said housing, and the other end of said torsion spring acts on said the 3rd convexity.
Preferably, the lower end of said armature is connected with said housing, and the upper end of said armature is provided with the 4th protruding and the 5th convexity, and said the 4th convexity is connected with said housing through said extension spring, the said the 5th protruding and said second protruding the contact.
Preferably, said yoke is riveted on the said bus.
Preferably, said housing comprises base, loam cake and middle cover, and said loam cake is connected with said middle cover, base, and said middle cover is connected with said base.
Preferably, the two ends of said loam cake are provided with circular groove, and the two ends of said draw bar are rotating to be placed in the said circular groove, and said circular groove is provided with gland.
Preferably, said instrument transformer places said base rear end, and said magnetic flow convertor places said covering, and said armature places on the said base.
Preferably, cover on said and be provided with label and transparency cover.
Technique scheme has following beneficial effect: this electronic trip unit is provided with armature on the basis of original release; Yoke; When big short circuit current occurs; Producing electromagnetic attraction between yoke and the armature is enough to overcome the pulling force of extension spring and makes armature movement; The action of armature movement rear drive draw bar; Triping of draw bar action rear drive mechanism; Cut off circuit; This armature movement only needs in several milliseconds, can accomplish; Very fast of reaction speed; Can effectively avoid long-time bigger short-circuit current burning apparatus and circuit, improve the fail safe and the reliability of breaker of plastic casing.
Description of drawings
Fig. 1 is the general assembly drawing of the embodiment of the invention.
Fig. 2 is the explosive view of the embodiment of the invention.
Fig. 3 is the structural representation of embodiment of the invention loam cake.
Fig. 4 is the structural representation of embodiment of the invention middle cover.
Fig. 5 is the structural representation of embodiment of the invention base.
Fig. 6 is the structural representation of embodiment of the invention armature.
Fig. 7 is the assembling sketch map of embodiment of the invention armature.
Fig. 8 is the structural representation of embodiment of the invention bus.
Fig. 9 is the part sketch map of embodiment of the invention instrument transformer.
Figure 10 is the structural representation of embodiment of the invention circuit parts.
Figure 11 is the structural representation of embodiment of the invention long transmission line plate.
Embodiment
Below in conjunction with accompanying drawing, be that example describes in detail to the preferred embodiments of the present invention with one four utmost point electronic type release.
Like Fig. 1, shown in 2, this four utmost points electronic type release comprises four buses 4, four instrument transformers 5, four yokes 6, four armature 7, a draw bar 15 and a magnetic flow convertor 13, and above-mentioned part all is positioned on the housing.This housing is made up of loam cake 2, middle cover 11 and base 3, on cover and be provided with hole 43,44,45 (as shown in Figure 3), also be provided with label 18 and transparency cover 1 on the loam cake 2, transparency cover 1 covers label 18; Middle cover 11 is provided with hole 37,38,39,40,41, groove 28,29, cylinder 32,33 (as shown in Figure 4); Base is provided with boss 19, location notch 21, hole 24,26, platform 34,35,36,42 (as shown in Figure 5). Step 34,35,36 hasps of hole 37,38,39 on the middle cover 11 and base 3 are fastening, and platform 40,41 hasps of the hole 43,44,45 on the loam cake 2 and the platform 42 of base 3 and middle cover 11 are fastening.Adopt this structure can make the structure of release more compact.
Also be provided with 8,9, one short-term road plates 10 of two long transmission line plates and electric leakage drive rod 16, compressing tablet 17 on the middle cover 11.As shown in figure 10, short-term road plate 10 is inserted in the middle cover 11, and long transmission line plate 8,9 connects through plug-in unit, and be inserted in the round platform 32,33 of middle cover 11 in the hole 30,31 (as shown in figure 11) on the long transmission line plate 9.Electric leakage drive rod 16 places the groove 28 of middle cover 11, and compressing tablet 17 is fastening with middle cover 11.Magnetic flow convertor 13 is inserted in the groove 29 of middle cover 11.
As shown in Figure 6; The upper end that armature 7 is provided with step 22, armature through hole 25, this armature is provided with the 4th the protruding the 27 and the 5th protruding 54; Step 22 on the armature 7 inserts in the location notch 21 of base 3; On the armature 7 the 4th protruding 27 passes through an extension spring 14 and is connected with base 3, and an end of extension spring 14 places in the hole 26 on the base.
As shown in Figure 9, instrument transformer 5 is provided with an instrument transformer through hole 23 and a jack 20, and this instrument transformer 5 is positioned at the rear end of base 3, and the boss 19 on the base 3 is inserted in instrument transformer 5 is fixed on the base 3.Instrument transformer 5 is connected with magnetic flow convertor 13.
Like Fig. 7, shown in 8, bus 4 is " Z " font structure, and riveted joint has yoke 6 on the bus 4, and yoke 6 is relative with armature 7.The hole 24 of base 3 and the instrument transformer through hole 23 of instrument transformer 5 are passed in the lower end of bus 4, and the armature through hole 25 of armature 7 is passed in the upper end of bus 4, and bus adopts " Z " font structure can make the structure of this release more compact.
For another example Fig. 1, shown in 3, the two ends of loam cake 2 respectively are provided with a circular groove 46, the two ends of draw bar 15 lay respectively in two circular grooves 46, circular groove 46 is provided with gland 47 and pushes down draw bar 15, gland 47 is connected with loam cake 2 through screw 48, draw bar 15 can rotate in circular groove.Draw bar 15 is provided with first protruding 51, second the protruding the 52 and the 3rd protruding 53, the first protruding 51 and contact with magnetic flow convertor 13, and the 5th convexity 54 contacts on second convexity 52 and the armature 7.Also be with a reduction torsion spring 12 on the draw bar 15, an end of reduction torsion spring 12 is resisted against on the loam cake 2, and the other end is resisted against on the 3rd protruding 53.
During this electronic trip unit work; When overload current appears or the wink streaming current adjusted (smaller or equal to 15Inm; Inm is a shell frame electric current) time; The electromagnetic attraction that produces between armature preface 7 and the yoke 6 is not enough to overcome the power of extension spring 14; And the power that the electric current of instrument transformer 5 output produces is enough to overcome the attraction power of magnetic flow convertor, so magnetic flow convertor 13 actions and acting on first protruding 51, promotes draw bar 15 and rotates; And then protection circuit and equipment are triped by the mechanism that promotes breaker of plastic casing.When draw bar 15 rotated, reduction torsion spring 12 was stressed, and after outage was triped by mechanism, the magnetic force between armature 7 and the yoke 6 disappeared, and armature 7 resets under the effect of extension spring 14, resetted in this draw bar 15 automatic revolution under the effect of reduction torsion spring 12 simultaneously.
When bigger short-circuit current (more than or equal to 20Inm, Inm is a shell frame electric current) occurring, the power that the electric current of instrument transformer 5 outputs produces overcomes the attraction power of magnetic flow convertor 13, the magnetic flow convertor action.Meanwhile; The electromagnetic attraction that this electric current produces between armature 7 and yoke 6 enough overcomes the power of extension spring 14; Armature 7 actions; On the armature 7 the 5th protruding 54 acts on and drives draw bar 15 rotations on second on the drive rod 15 protruding 52; Protection circuit and equipment are triped by the mechanism that promotes breaker of plastic casing.Because the time of armature movement just can accomplish in several milliseconds; And need accomplish in tens milliseconds the operate time of magnetic flow convertor; Therefore this armature ratio magnetic flow convertor can make the circuit breaker tripping outage more fast; The safety of protection equipment, circuit has improved the fail safe and the reliability of breaker of plastic casing.
More than the electronic trip unit that is used for breaker of plastic casing that the embodiment of the invention provided has been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the embodiment of the invention; Part all can change on embodiment and range of application; In sum; This description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (9)
1. electronic trip unit that is used for breaker of plastic casing; Comprise housing, bus (4), instrument transformer (5) and magnetic flow convertor (13); Said instrument transformer (5) is provided with an instrument transformer through hole (23); Said bus (4) passes said instrument transformer through hole (23); Said instrument transformer (5), magnetic flow convertor (13) are positioned on the said housing; Said magnetic flow convertor (13) is connected with said instrument transformer (5), it is characterized in that it also comprises:
Armature (7), said armature (7) are provided with an armature through hole (25), and said bus (4) passes said armature through hole (25), and said armature (7) is connected with said housing through an extension spring (14);
Yoke (6), said yoke (6) are positioned on the said bus (4), and said yoke (6) is relative with said armature (7);
Draw bar (15); Said draw bar (15) is rotating to be connected on the said housing; Said draw bar is provided with first convexity (51), second convexity (52); Said first convexity (51) contacts with said magnetic flow convertor (13); Said second convexity (52) contacts with said armature (7), also is provided with a reduction torsion spring (12) on the said draw bar (15).
2. the electronic trip unit that is used for breaker of plastic casing according to claim 1; It is characterized in that: said bus (4) is " Z " font; Said armature through hole (25) is passed in the upper end of said bus (4), and said instrument transformer through hole (23) is passed in the lower end of said bus (4).
3. the electronic trip unit that is used for breaker of plastic casing according to claim 1; It is characterized in that: said draw bar is provided with the 3rd convexity (53); One end of said reduction torsion spring (12) acts on the said housing, and the other end of said torsion spring acts on said the 3rd convexity (53).
4. the electronic trip unit that is used for breaker of plastic casing according to claim 1; It is characterized in that: the lower end of said armature (7) is connected with said housing; The upper end of said armature (7) is provided with the 4th convexity (27) and the 5th convexity (54); Said the 4th convexity (27) is connected with said housing through said extension spring (14), and said the 5th convexity (54) contacts with said second convexity (52).
5. the electronic trip unit that is used for breaker of plastic casing according to claim 1 is characterized in that: said yoke (6) is riveted on the said bus (4).
6. according to the described electronic trip unit that is used for breaker of plastic casing of any claim of claim 1 to 5; It is characterized in that: said housing comprises base (3), loam cake (2) and middle cover (11); Said loam cake (2) is connected with said middle cover (11), base (3), and said middle cover (11) is connected with said base (3).
7. the electronic trip unit that is used for breaker of plastic casing according to claim 6; It is characterized in that: the two ends of said loam cake (2) respectively are provided with a circular groove (46); The two ends of said draw bar (15) are rotating to be placed in the said circular groove (46), and said circular groove (46) is provided with gland (47).
8. the electronic trip unit that is used for breaker of plastic casing according to claim 6; It is characterized in that: said instrument transformer (5) places the rear end of said base (3); Said magnetic flow convertor (13) places on the said middle cover (11), and said armature (7) places on the said base (3).
9. the electronic trip unit that is used for breaker of plastic casing according to claim 6 is characterized in that: said loam cake (2) is provided with label (18) and transparency cover (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241733 CN102347175B (en) | 2010-07-30 | 2010-07-30 | Electronic releaser for molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010241733 CN102347175B (en) | 2010-07-30 | 2010-07-30 | Electronic releaser for molded case circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102347175A true CN102347175A (en) | 2012-02-08 |
| CN102347175B CN102347175B (en) | 2013-07-03 |
Family
ID=45545747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010241733 Active CN102347175B (en) | 2010-07-30 | 2010-07-30 | Electronic releaser for molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102347175B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390191A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker and its buckle releaser |
| CN109830409A (en) * | 2019-01-18 | 2019-05-31 | 杭州科丰电子股份有限公司 | A kind of breaker |
| CN113035656A (en) * | 2019-12-24 | 2021-06-25 | 上海良信电器股份有限公司 | Instantaneous backup protection device of electronic circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1511882A (en) * | 1974-04-29 | 1978-05-24 | Square D Co | Electric circuit interrupting device |
| CN2701061Y (en) * | 2004-05-18 | 2005-05-18 | 天津市百利低压电器有限公司 | Plastic casing type circuit breaker |
| CN101145475A (en) * | 2006-09-12 | 2008-03-19 | Ls产电株式会社 | Moulded case type circuit breaker instant tripping device |
| CN201084663Y (en) * | 2007-08-10 | 2008-07-09 | 上海电器股份有限公司人民电器厂 | A thermo-electro-magnetic over-current adjustable-type release |
-
2010
- 2010-07-30 CN CN 201010241733 patent/CN102347175B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1511882A (en) * | 1974-04-29 | 1978-05-24 | Square D Co | Electric circuit interrupting device |
| CN2701061Y (en) * | 2004-05-18 | 2005-05-18 | 天津市百利低压电器有限公司 | Plastic casing type circuit breaker |
| CN101145475A (en) * | 2006-09-12 | 2008-03-19 | Ls产电株式会社 | Moulded case type circuit breaker instant tripping device |
| CN201084663Y (en) * | 2007-08-10 | 2008-07-09 | 上海电器股份有限公司人民电器厂 | A thermo-electro-magnetic over-current adjustable-type release |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109390191A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker and its buckle releaser |
| CN109830409A (en) * | 2019-01-18 | 2019-05-31 | 杭州科丰电子股份有限公司 | A kind of breaker |
| CN113035656A (en) * | 2019-12-24 | 2021-06-25 | 上海良信电器股份有限公司 | Instantaneous backup protection device of electronic circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102347175B (en) | 2013-07-03 |
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