CN102347174A - Shunting method of circuit breaker - Google Patents
Shunting method of circuit breaker Download PDFInfo
- Publication number
- CN102347174A CN102347174A CN2011102774130A CN201110277413A CN102347174A CN 102347174 A CN102347174 A CN 102347174A CN 2011102774130 A CN2011102774130 A CN 2011102774130A CN 201110277413 A CN201110277413 A CN 201110277413A CN 102347174 A CN102347174 A CN 102347174A
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- China
- Prior art keywords
- shunt
- circuit breaker
- electromagnet
- bimetallic element
- bimetallic
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Abstract
The invention relates to a shunting method of a circuit breaker. When a short circuit does not occur, a current enters a shunt through a wire outlet end, a wire at the upper end of the shunt is connected with a bimetallic element and then passes through the wire outlet end, an instantaneous protective electromagnet is not electrified and does not work at the time; when the short circuit occurs and the circuit breaker withstands the current, a closed loop of an inverse U-shaped shunt generates a very large electro-dynamic repulsion force under a heavy current, the lower part of a U-shaped conductor moves downwards so that a contact head below the U-shaped conductor is switched on with a contact head of the electromagnet, the short circuit current passes through an electromagnet coil instead of the bimetallic element, thereby avoiding the damage caused by the short circuit current passing through the bimetallic element or a heating element. The normal use of the circuit breaker can be ensured, and meanwhile the service life is prolonged.
Description
Technical field
The present invention relates to a kind of shunt method of circuit breaker.
Background technology
Bimetallic element is one of circuit breaker critical elements when carrying out overload protection, and bimetallic element is by the double layer of metal of the different heat expansion coefficient combined material of strong bonded each other.One deck that thermal coefficient of expansion is high is called active layers, and one deck that thermal coefficient of expansion is low is called passive layer.When the short circuit current of circuit surpasses the electric current of bimetallic element permission, will make bimetallic element distortion even fusing.Influence the normal use of circuit breaker, and shortened the useful life of circuit breaker.
Summary of the invention
The technical problem that the present invention will solve provides a kind of shunt method of circuit breaker of simple in structure, long service life.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: when not being short-circuited, electric current gets into shunt via the end of incoming cables, and the upper end of shunt has single line to link to each other with bimetallic element; Through leading-out terminal, wink this moment is moved protection electromagnet no power and is not worked again; When line short takes place; When circuit breaker stands this electric current; The loop of inverted U-shaped shunt produces very big electrodynamic repulsion force under big electric current, U-shaped conductor bottom moves downward, and its following contact and the contact of electromagnet are connected; Short circuit current does not pass through bimetallic element through electromagnet coil, and this just avoids the infringement that short circuit current causes through bimetallic or heater element.
Further, said shunt is an inverted U-shaped conductor, and two contacts are equipped with in the bottom, just often contact and last end in contact, and the electric current into U conductor of flowing through forms a loop.
Further, when being short-circuited, the impedance of bimetallic or heater element is greater than electromagnet coil.
The shunt method of circuit breaker of the present invention, owing to adopted the method for shunting, when short circuit, short circuit current does not pass through bimetallic element through electromagnet coil, this just avoids the infringement that short circuit current causes through bimetallic or heater element.The normal use of circuit breaker can be guaranteed, its useful life can be increased simultaneously.
Description of drawings
Fig. 1 is the sketch map of the shunt method of circuit breaker of the present invention.
Embodiment
In the present embodiment, with reference to shown in Figure 1, the part flow arrangement of this circuit breaker comprises shunt 2, and is arranged on the end of incoming cables 1 of shunt 2 ends, and the bimetallic element 3 that is connected with shunt 2, and the leading-out terminal 4 that is connected with bimetallic element 3; Said leading-out terminal 4 also is connected with moving protection of wink electromagnet 5, and moving protection of said wink electromagnet 5 also is provided with and the corresponding contact 50 in bimetallic element 3 lower ends.The shunt method of this circuit breaker, when not being short-circuited, electric current gets into shunt 2 via end of incoming cables 1, and the upper end of shunt 2 has single line to link to each other with bimetallic element 3, and again through leading-out terminal 4, wink this moment is moved protection electromagnet 5 no powers and is not worked; When line short takes place; When circuit breaker stood this electric current, the loop of inverted U-shaped shunt 2 produced very big electrodynamic repulsion force under big electric current, and U-shaped conductor bottom moves downward; Its following contact and the contact 50 of moving protection of wink electromagnet 5 are connected; This moment, the impedance of bimetallic element 3 was protected electromagnet 5 greater than moving in wink, and short circuit current is through moving protection electromagnet 5 wink and not passing through bimetallic element 3, and this just avoids the infringement that short circuit current causes through bimetallic element 3.
Wherein, said shunt 2 is an inverted U-shaped conductor, and two contacts are equipped with in the bottom, just often contact and last end in contact, and the electric current into U conductor of flowing through forms a loop.
The shunt method of circuit breaker of the present invention, owing to adopted the method for shunting, when short circuit, short circuit current does not pass through bimetallic element through electromagnet coil, this just avoids the infringement that short circuit current causes through bimetallic or heater element.The normal use of circuit breaker can be guaranteed, its useful life can be increased simultaneously.
Below the present invention is done a detailed description, the above is merely the present invention's preferred embodiment, when can not limiting practical range of the present invention, promptly allly does impartially to change and modify according to the application's scope, all should still belong in the covering scope of the present invention.
Claims (3)
1. the shunt method of a circuit breaker, the part flow arrangement of this circuit breaker comprise moving protection of shunt, end of incoming cables, bimetallic element, leading-out terminal and wink electromagnet; Moving protection of said wink electromagnet also is provided with and the corresponding contact in bimetallic element lower end; It is characterized in that shunt method is: when not being short-circuited, electric current gets into shunt via the end of incoming cables, and the upper end of shunt has single line to link to each other with bimetallic element, and again through leading-out terminal, wink this moment is moved protection electromagnet no power and do not work; When line short takes place; When circuit breaker stands this electric current; The loop of inverted U-shaped shunt produces very big electrodynamic repulsion force under big electric current, U-shaped conductor bottom moves downward, and its following contact and the contact of electromagnet are connected; Short circuit current does not pass through bimetallic element through electromagnet coil, and this just avoids the infringement that short circuit current causes through bimetallic or heater element.
2. the shunt method of circuit breaker according to claim 1, it is characterized in that: said shunt is an inverted U-shaped conductor, and two contacts are equipped with in the bottom, just often contact and last end in contact, the electric current into U conductor of flowing through forms a loop.
3. the shunt method of circuit breaker according to claim 1, it is characterized in that: when being short-circuited, the impedance of bimetallic or heater element is greater than electromagnet coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102774130A CN102347174A (en) | 2011-09-19 | 2011-09-19 | Shunting method of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102774130A CN102347174A (en) | 2011-09-19 | 2011-09-19 | Shunting method of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102347174A true CN102347174A (en) | 2012-02-08 |
Family
ID=45545746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102774130A Pending CN102347174A (en) | 2011-09-19 | 2011-09-19 | Shunting method of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102347174A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211158A (en) * | 1924-02-11 | 1924-09-11 | Voigt & Haeffner Aktiengesellschaft | |
| JP2000294109A (en) * | 1999-04-09 | 2000-10-20 | Tempearl Ind Co Ltd | Wiring breaker |
| US6388553B1 (en) * | 2000-03-02 | 2002-05-14 | Eaton Corproation | Conductive polymer current-limiting fuse |
| CN1577688A (en) * | 2003-07-17 | 2005-02-09 | 三菱电机株式会社 | Multipolar circuit breaker |
| CN101136293A (en) * | 2006-09-01 | 2008-03-05 | 西门子公司 | A current limiter |
| CN101432835A (en) * | 2006-04-28 | 2009-05-13 | 西门子能量及自动化公司 | Devices, systems, and methods for shunting a circuit breaker |
| CN201927560U (en) * | 2011-01-26 | 2011-08-10 | 北京人民电器厂有限公司 | Circuit breaker with selective protection function |
-
2011
- 2011-09-19 CN CN2011102774130A patent/CN102347174A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB211158A (en) * | 1924-02-11 | 1924-09-11 | Voigt & Haeffner Aktiengesellschaft | |
| JP2000294109A (en) * | 1999-04-09 | 2000-10-20 | Tempearl Ind Co Ltd | Wiring breaker |
| US6388553B1 (en) * | 2000-03-02 | 2002-05-14 | Eaton Corproation | Conductive polymer current-limiting fuse |
| CN1577688A (en) * | 2003-07-17 | 2005-02-09 | 三菱电机株式会社 | Multipolar circuit breaker |
| CN101432835A (en) * | 2006-04-28 | 2009-05-13 | 西门子能量及自动化公司 | Devices, systems, and methods for shunting a circuit breaker |
| CN101136293A (en) * | 2006-09-01 | 2008-03-05 | 西门子公司 | A current limiter |
| CN201927560U (en) * | 2011-01-26 | 2011-08-10 | 北京人民电器厂有限公司 | Circuit breaker with selective protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 528437 B building, No. 53 West Jiangling Road, torch hi tech Development Zone, Guangdong, Zhongshan Applicant after: GUANGDONG TECCO ELECTRIC CO., LTD. Address before: 528437 B building, No. 53 West Jiangling Road, torch hi tech Development Zone, Guangdong, Zhongshan Applicant before: Guangdong Tenfo Electrical Group Co., Ltd. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: GUANGDONG TIANFU ELECTRIC GROUP CO., LTD. TO: GUANGDONG TECCO ELECTRIC CO., LTD. |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120208 |