CN102426996A - Overload protecting circuit connecting device of circuit breaker - Google Patents
Overload protecting circuit connecting device of circuit breaker Download PDFInfo
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- CN102426996A CN102426996A CN2011102133199A CN201110213319A CN102426996A CN 102426996 A CN102426996 A CN 102426996A CN 2011102133199 A CN2011102133199 A CN 2011102133199A CN 201110213319 A CN201110213319 A CN 201110213319A CN 102426996 A CN102426996 A CN 102426996A
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- circuit
- circuit breaker
- overload protecting
- board
- lead
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Abstract
The invention discloses an overload protecting circuit connecting device of a circuit breaker, wherein the overload protecting circuit connecting device comprises a wiring board, a connecting board, a double-metal board, a static electric conducting board and a first connection conducting wire, wherein the wiring board and the double-metal board are connected and fixed through the connecting board; and simultaneously the double-metal board and the static electric conducting board are connected through the first connection conducting wire. The overload protecting circuit connecting device is characterized by also comprising a second connection conducting wire, wherein the wiring board and the static electric conducting board are connected through the second connection conducting wire. Compared with the prior art, because a connecting branch circuit of the wiring board and the static electric conducting board is added, when extremely high short-circuit current passes through the main circuit of the circuit breaker, bypass flow is provided, and the thermal stability of the main circuit is ensured, thus the double-metal plate can not be fused because of extremely high short-circuit current, and guarantee is provided for high breaking of the circuit breaker.
Description
Technical field
the present invention relates to a kind of circuit breaker overload protecting circuit jockey.
Background technology
in recent years, some domestic and international enterprises are such as ABB, positive Thailand etc. all is devoted to improve the more research and development of high breaking capacity of miniature circuit breaker, and has obtained some phasic results.Mainly be to cut-off like 20KA even higher short circuit current for the high breaking miniature circuit breaker, this just requires each element (particularly bimetallic plates) in the overload protection unit, circuit breaker inner conductive loop to come to have enough temperature capacities in short-term at short circuit current temporarily.
bimetallic plates require to have certain resistance and sectional area as the critical elements in the overload protecting circuit; Guarantee when overload current appears in circuit, to have certain caloric value to realize protection with this, certain temperature capacity in short-term will be arranged when short circuit current appears in circuit simultaneously to drive the action of miniature circuit breaker trip unit.Yet the short circuit current in the overload protecting circuit of present above-mentioned circuit breaker often all passes through bimetallic plates; Bimetallic plates may fuse under so high electric current; Thereby influence the function of cut-offfing of circuit breaker, be born so just need a kind of device that can effectively address the above problem.
Summary of the invention
the present invention seeks to: provide a kind of thermal stability can better the circuit breaker overload protection arrangement, in order to solve the problem that bimetallic plates fuse under high short circuit current, guarantee the high breaking capacity of circuit breaker with this.
technical scheme of the present invention is: a kind of circuit breaker overload protecting circuit jockey; Comprise that terminal block, connecting plate, bimetallic plates, quiet conductive plate are connected lead with first; Wherein be connected fixingly between terminal block and the bimetallic plates through connecting plate, connect lead through first between bimetallic plates and the quiet conductive plate simultaneously and link to each other; It is characterized in that also comprising that second connects lead, connect lead through second between said terminal block and the quiet conductive plate and link to each other.
are preferred, and terminal block described in the present invention and bimetallic plates are all fixing with the connecting plate welding.
are preferred, and the two ends of the first connection lead described in the present invention are fixing with bimetallic plates and the welding of quiet conductive plate respectively, and the two ends of the second connection lead are then fixed with terminal block and the welding of quiet conductive plate respectively.
are the same with routine techniques; Terminal block among the present invention is used to connect the outer lead of circuit breaker; This terminal block is connected lead and quiet conductive plate and together links to each other and constitute a branch circuit of circuit breaker main circuit with connecting plate, bimetallic plates, first, terminal block, second connects lead and quiet conductive plate is formed another branch circuit parallelly connected with the aforementioned branches circuit again simultaneously.The present invention has realized parallelly connected shunting through the foregoing circuit syndeton in same circuit breaker main circuit; Thereby reduced the thermal effect of the electric current in the circuit breaker main circuit effectively; Especially when high short circuit current passes through main circuit, can guarantee the thermal stability of main circuit.And in operate as normal,, help the reduction of temperature rise because two-way props up line parallel and makes the main circuit internal resistance of this circuit breaker reduce.
are further; Connecting plate described in the present invention is processed by the tin-phosphor bronze plate of high conductivity; Specifically be that to select thickness for use be 0.6mm, the trade mark is that the tin-phosphor bronze plate of QSn6.5-0.1Y is made, and adopts certain technology to make it have certain elasticity.
are the same with routine techniques; Wherein first connects lead according to slide rheostat principle and bimetallic plates welding, and specifically the welding position is got by the internal resistance value Theoretical Calculation of the current specification of two branch roads in the circuit breaker and the material of bimetallic plates own.
same routine techniques, the bimetallic plates among the present invention itself have a fixing internal resistance value, specifically can select the bimetallic plates of German moral nickel company for use.
are further, and the first connection lead described in the present invention is connected lead with second and all selects special annealed copper strand wire for use.
The heat energy that the branch circuit that terminal block, connecting plate, bimetallic plates, the first connection lead and quiet conductive plate are formed among
the present invention is produced in operate as normal should satisfy the operate as normal load of bimetallic plates, and the concrete internal resistance value of another branch circuit of terminal block, the second connection lead and quiet conductive plate composition is also confirmed thus simultaneously.Certain first connects after lead is connected lead with second two branch road parallel connections of selection needs foundation of sectional area the internal resistance value of gained confirms, concrete select for use and computational methods all are well known to those skilled in the art, detailed description no longer among the present invention.
Advantage of the present invention is:
this circuit breaker overload protecting circuit jockey 1. provided by the invention overcomes the limitation that has circuit breaker segmentation ability now, for the high sublevel of realizing miniature circuit breaker is given security.
this circuit breaker overload protecting circuit jockey 2. provided by the invention has guaranteed the thermal stability of main circuit, and the bimetallic plates in the main circuit can not fused because of high short circuit current.
this circuit breaker overload protecting circuit jockey 3. provided by the invention; This is connected the branch branch road owing to increased terminal block and quiet conductive plate; The parallel connection of two branch roads makes effective internal resistance value of whole circuit breaker main circuit reduce, under normal operation circumstances; Reduce temperature rise effectively, reduced power consumption.
this circuit breaker overload protecting circuit jockey 4. provided by the invention is because for the circuit breaker high breaking capacity provides assurance, so in the very suitable small-sized DC circuit breaker that is applied to arc extinguishing is had relatively high expectations.
this circuit breaker overload protecting circuit jockey 5. provided by the invention, suitable equally on the photovoltaic string circuit breaker in intelligent grid.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is a structural representation of the present invention.
wherein: 1, terminal block; 2, connecting plate; 3, bimetallic plates; 4, first connects lead; 5, quiet conductive plate; 6, second connects lead.
Embodiment
embodiment: as shown in Figure 1, this circuit breaker overload protecting circuit jockey that present embodiment provides is connected 6 in lead and is formed by terminal block 1, connecting plate 2, bimetallic plates 3, the first connection lead 4, quiet conductive plate 5 with second.Be weldingly connected fixing through connecting plate 2 between wherein said terminal block 1 and the bimetallic plates 3; The two ends of the said first connection lead 4 are fixing with quiet conductive plate 5 welding with bimetallic plates 3 respectively, and the two ends of the second connection lead 6 are then fixing with terminal block 1 and 5 welding of quiet conductive plate respectively.
Connecting plate 2 is selected thickness 0.6mm for use described in
present embodiment, and the tin-phosphor bronze plate of trade mark QSn6.5-0.1Y is processed, and the said first connection lead 4 is connected lead 6 with second and is special annealed copper strand wire.Bimetallic plates 3 in the present embodiment itself have a fixing internal resistance value, specifically select the bimetallic plates of German moral nickel company for use.
are the same with routine techniques; Terminal block 1 in the present embodiment is used to connect the outer lead of circuit breaker; This terminal block 1 is connected lead 4 and quiet conductive plate 5 and together links to each other and constitute a branch circuit of circuit breaker main circuit with connecting plate 2, bimetallic plates 3, first, terminal block 1, second connects lead 6 and quiet conductive plate 5 is formed another branch circuit parallelly connected with the aforementioned branches circuit again simultaneously.Present embodiment has been realized parallelly connected shunting through the foregoing circuit syndeton in same circuit breaker main circuit; Thereby reduced the thermal effect of the electric current in the circuit breaker main circuit effectively; Especially when high short circuit current passes through main circuit, can guarantee the thermal stability of main circuit.
The advantage of present embodiment is following:
are this circuit breaker overload protecting circuit jockey that provides of present embodiment 1., overcomes the limitation of existing circuit breaker segmentation ability, for the high sublevel of realizing miniature circuit breaker is given security.
are this circuit breaker overload protecting circuit jockey that provides of present embodiment 2., has guaranteed the thermal stability of main circuit, and the bimetallic plates 3 in the main circuit can not fused because of high short circuit current.
are this circuit breaker overload protecting circuit jockey that provides of present embodiment 3.; This is connected the branch branch road owing to increased terminal block and quiet conductive plate; The parallel connection of two branch roads makes effective internal resistance value of whole circuit breaker main circuit reduce, under normal operation circumstances; Reduce temperature rise effectively, reduced power consumption.
are this circuit breaker overload protecting circuit jockey that provides of present embodiment 4., because for the circuit breaker high breaking capacity provides assurance, so in the small-sized DC circuit breaker that suits very much to be applied to arc extinguishing is had relatively high expectations.
are this circuit breaker overload protecting circuit jockey that provides of present embodiment 5., and are suitable equally on the photovoltaic string circuit breaker in intelligent grid.
the foregoing description certainly only are explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.The all spirit of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (6)
1. circuit breaker overload protecting circuit jockey; Comprise that terminal block (1), connecting plate (2), bimetallic plates (3), quiet conductive plate (5) are connected lead (4) with first; Wherein be connected fixingly between terminal block (1) and the bimetallic plates (3) through connecting plate (2), it is continuous to connect lead (4) through first between bimetallic plates (3) and the quiet conductive plate (5) simultaneously; It is characterized in that also comprising that second connects lead (6), connect lead (6) through second between said terminal block (1) and the quiet conductive plate (5) and link to each other.
2. circuit breaker overload protecting circuit jockey according to claim 1 is characterized in that said terminal block (1) and bimetallic plates (3) are all fixing with connecting plate (2) welding.
3. circuit breaker overload protecting circuit jockey according to claim 1; The two ends that it is characterized in that the said first connection lead (4) are fixing with bimetallic plates (3) and quiet conductive plate (5) welding respectively, and the two ends of the second connection lead (6) are then fixed with terminal block (1) and quiet conductive plate (5) welding respectively.
4. circuit breaker overload protecting circuit jockey according to claim 1 is characterized in that said connecting plate (2) is the tin-phosphor bronze plate.
5. circuit breaker overload protecting circuit jockey according to claim 4 is characterized in that said tin-phosphor bronze plate is thickness 0.6mm, the tin-phosphor bronze plate of trade mark QSn6.5-0.1Y.
6. circuit breaker overload protecting circuit jockey according to claim 1 is characterized in that the said first connection lead (4) is connected lead (6) and is special annealed copper strand wire with second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102133199A CN102426996A (en) | 2011-07-28 | 2011-07-28 | Overload protecting circuit connecting device of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102133199A CN102426996A (en) | 2011-07-28 | 2011-07-28 | Overload protecting circuit connecting device of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102426996A true CN102426996A (en) | 2012-04-25 |
Family
ID=45960963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102133199A Pending CN102426996A (en) | 2011-07-28 | 2011-07-28 | Overload protecting circuit connecting device of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102426996A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219206A (en) * | 2012-01-19 | 2013-07-24 | 西门子公司 | Electric switch |
| CN108831807A (en) * | 2018-08-23 | 2018-11-16 | 无锡新宏泰电器科技股份有限公司 | A kind of bimetal leaf connection structure of breaker of plastic casing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19516723A1 (en) * | 1995-05-06 | 1996-11-14 | Kloeckner Moeller Gmbh | Thermomagnetic release for protection switches of motors, lines, generators and transformers |
| CN1360327A (en) * | 2000-12-18 | 2002-07-24 | 尹顿公司 | Circuit breaker with bypass conductor and method for changeover of current in bimetal sheet |
| CN202150421U (en) * | 2011-07-28 | 2012-02-22 | 法泰电器（江苏）股份有限公司 | Breaker overload protecting circuit connecting device |
-
2011
- 2011-07-28 CN CN2011102133199A patent/CN102426996A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19516723A1 (en) * | 1995-05-06 | 1996-11-14 | Kloeckner Moeller Gmbh | Thermomagnetic release for protection switches of motors, lines, generators and transformers |
| CN1360327A (en) * | 2000-12-18 | 2002-07-24 | 尹顿公司 | Circuit breaker with bypass conductor and method for changeover of current in bimetal sheet |
| CN202150421U (en) * | 2011-07-28 | 2012-02-22 | 法泰电器（江苏）股份有限公司 | Breaker overload protecting circuit connecting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103219206A (en) * | 2012-01-19 | 2013-07-24 | 西门子公司 | Electric switch |
| CN103219206B (en) * | 2012-01-19 | 2016-05-18 | 西门子公司 | Electric switch |
| CN108831807A (en) * | 2018-08-23 | 2018-11-16 | 无锡新宏泰电器科技股份有限公司 | A kind of bimetal leaf connection structure of breaker of plastic casing |
| CN108831807B (en) * | 2018-08-23 | 2024-05-10 | 无锡新宏泰电器科技股份有限公司 | Bimetal sheet connection structure of molded case circuit breaker |
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Application publication date: 20120425 |