CN109273332B - Leakage module of circuit breaker and circuit breaker - Google Patents
Leakage module of circuit breaker and circuit breaker Download PDFInfo
- Publication number
- CN109273332B CN109273332B CN201811324497.7A CN201811324497A CN109273332B CN 109273332 B CN109273332 B CN 109273332B CN 201811324497 A CN201811324497 A CN 201811324497A CN 109273332 B CN109273332 B CN 109273332B
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- CN
- China
- Prior art keywords
- wiring board
- circuit breaker
- sequence transformer
- coil
- zero
- 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.)
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 230000005611 electricity Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention relates to the technical field of circuit breakers, in particular to a leakage module of a circuit breaker and the circuit breaker. The invention directly adopts the coil to pass through the zero-sequence transformer and is directly and fixedly connected with the live wire wiring board, and the zero-sequence wiring board passes through the zero-sequence transformer and is connected with the leakage tripping assembly in the circuit breaker, so that the process of passing through the zero-sequence transformer is simplified, the mode of using soft wires to pass through is eliminated, the resources and the cost are saved, the structure of the leakage module is compact and simple, and the occupied space of the zero-sequence transformer, the circuit board and the coil assembly is reduced.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a leakage module of a circuit breaker and the circuit breaker.
Background
A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The addition of the leakage function is extremely difficult for small circuit breakers, mainly because of space constraints, especially for small circuit breakers with a module of 18mm wide. At present, a miniature circuit breaker with an electric leakage function occupies a large space on a zero sequence transformer and a core penetrating wire, and soft connecting wires are adopted to penetrate through the zero sequence transformer. In addition, if the leakage circuit, the zero sequence transformer and the through wire occupy excessive space, the space of the arc extinguishing system of the circuit breaker is squeezed, and the breaking capacity of the circuit breaker, the temperature rise electromagnetic compatibility and other performances are affected.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the leakage module of the circuit breaker and the circuit breaker, which simplify the process of penetrating the zero sequence transformer, eliminate the way of using soft wires to penetrate, save resources and cost, ensure that the leakage module has compact and simple structure, reduce the occupied space of the zero sequence transformer, a circuit board and a coil assembly, avoid the space of an arc extinguishing system of the circuit breaker from being squeezed, ensure that the breaking capacity, the temperature rise electromagnetic compatibility and other performances of the circuit breaker are not affected, and reduce the volume of the circuit breaker.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a leakage module of circuit breaker, its includes zero sequence transformer, zero line wiring board, live wire wiring board, coil pack and the circuit board of being connected with the zero sequence transformer electricity, the coil pack is including setting up in the iron core of one side of zero sequence transformer, suit in the coil former of iron core, winding in the coil of coil former, connect in the magnetic conductive sheet of iron core and install in the stationary contact of magnetic conductive sheet, zero line wiring board and live wire wiring board all are located the opposite side that the coil pack was kept away from to the zero sequence transformer, the one end of live wire wiring board is protruding to in the zero sequence transformer, the one end of zero line wiring board runs through the zero sequence transformer and is used for being connected with external leakage tripping device, a free end of coil is protruding to in the zero sequence transformer and is connected with the live wire wiring board, another free end of coil is connected with the magnetic conductive sheet.
Further, the live wire wiring board and the zero line wiring board are symmetrically arranged about the central axis of the zero sequence transformer, an insulating piece is arranged between the live wire wiring board and the zero line wiring board, and the insulating piece is located in the zero sequence transformer.
Further, the one end that the coil former is close to the stationary contact is provided with the buckle groove, the one end of magnetic conduction piece is provided with the buckle ring with buckle groove buckle, buckle ring and iron core conflict.
Further, the magnetic conduction sheet is U-shaped structure, the one end that the coil former kept away from the stationary contact is provided with the holding ring, the other end of magnetic conduction sheet is provided with holding ring complex constant head tank.
Further, the magnetic conduction piece is provided with an extension part, the extension part is in a hook shape, and the stationary contact is arranged on the extension part.
Further, a free end of the coil is welded to the live wire terminal block.
Further, the zero line wiring board is provided with a fixing hole for being connected with an external leakage tripping assembly.
Further, the zero line wiring board comprises a wiring part with an L-shaped structure, a bending part connected with the wiring part and a fixing part connected with the bending part, wherein the bending part is of a U-shaped structure, the bending part penetrates through the zero sequence transformer, the fixing hole is formed in the fixing part, the fixing part is located at one side, close to the coil assembly, of the zero sequence transformer, and the wiring part and the fixing part are respectively located at two sides of the zero sequence transformer.
Further, the coil is an enameled wire.
The invention also provides a circuit breaker, which comprises a shell and the leakage module, wherein the leakage module is arranged in the shell.
The invention has the beneficial effects that: in the actual use process, when the circuit is normal, no leakage current except working current passes through the circuit breaker, at the moment, the current passing through the zero sequence transformer is equal in size and opposite in direction, the sum is zero, no zero sequence current is generated in the zero sequence transformer, no output signal is generated in the zero sequence transformer, and the circuit breaker works normally and keeps a connected state; when the leakage current reaches a set current value, the vector sum of the currents flowing through the zero sequence transformer is not zero, the zero sequence transformer generates zero sequence current, once the set value is reached, the zero sequence transformer generates output signals to the circuit board, and at the moment, the coil assembly generates magnetic force, so that the static contact in the coil assembly is disconnected with the movable contact in the circuit breaker, and the leakage protection is achieved. The leakage module of the circuit breaker directly adopts the coil of the coil assembly to pass through the zero sequence transformer and is directly and fixedly connected with the live wire wiring board, and the zero wire wiring board is connected with the leakage tripping assembly in the circuit breaker after passing through the zero sequence transformer, so that the process of passing through the zero sequence transformer is simplified, the mode of using soft wires to pass through is eliminated, resources and cost are saved, the structure of the leakage module is compact and simple, the occupied space of the zero sequence transformer, the circuit board and the coil assembly is reduced, the occupied space of an arc extinguishing system of the circuit breaker is avoided, the breaking capacity and the temperature rise electromagnetic compatibility of the circuit breaker are not influenced, and the volume of the circuit breaker is reduced.
Drawings
Fig. 1 is a schematic perspective view of a leakage module according to the present invention.
Fig. 2 is a schematic perspective view of another view of the leakage module according to the present invention.
Reference numerals illustrate:
1. a zero sequence transformer; 2. a zero line patch panel; 21. a fixing hole; 22. a wiring section; 23. a bending part;
24. a fixing part; 3. a fire wire wiring board; 4. a coil assembly; 41. an iron core; 42. a coil former;
421. a positioning ring; 422. a buckle groove; 43. a coil; 44. magnetic conductive sheets; 441. a positioning groove;
442. an extension; 443. a snap ring; 45. a stationary contact; 5. a circuit board; 6. an insulating member.
Detailed Description
The invention will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the leakage module of the circuit breaker provided by the invention comprises a zero-sequence transformer 1, a zero-line wiring board 2, a live-line wiring board 3, a coil assembly 4 and a circuit board 5 electrically connected with the zero-sequence transformer 1, wherein the coil assembly 4 comprises an iron core 41 arranged on one side of the zero-sequence transformer 1, an insulated coil frame 42 sleeved on the iron core 41, a coil 43 wound on the coil frame 42, a magnetic conducting sheet 44 connected with the iron core 41 and a fixed contact 45 arranged on the magnetic conducting sheet 44, the zero-line wiring board 2 and the live-line wiring board 3 are both positioned on the other side of the zero-sequence transformer 1 far from the coil assembly 4, one end of the live-line wiring board 3 protrudes into the zero-sequence transformer 1, one end of the zero-line wiring board 2 penetrates through the zero-sequence transformer 1 and is used for being connected with an external leakage tripping assembly, one free end of the coil 43 protrudes into the zero-sequence transformer 1 and is connected with the live-line wiring board 3, and the other free end of the coil 43 is connected with the magnetic conducting sheet 44. Preferably, the coil 43 is an enameled wire, and the enameled wire is spirally arranged along the length direction of the coil frame 42 to form the coil 43.
In the actual use process, when the circuit is normal, no leakage current except working current passes through the circuit breaker, at the moment, the current passing through the zero-sequence transformer 1 is equal in size, opposite in direction and zero in total, no zero-sequence current is generated in the zero-sequence transformer 1, no output signal is generated in the zero-sequence transformer 1, and the circuit breaker works normally and keeps a connected state; when the leakage current reaches a set current value, the vector sum of the currents flowing through the zero sequence transformer 1 is not zero, the zero sequence transformer 1 generates zero sequence current, once the set value is reached, the zero sequence transformer 1 generates an output signal to the circuit board 5, and the coil assembly 4 generates magnetic force at the moment, so that the fixed contact 45 in the coil assembly 4 is disconnected with the movable contact in the circuit breaker, and the leakage protection is achieved. The leakage module of the circuit breaker directly adopts the coil 43 of the coil assembly 4 to pass through the zero sequence transformer 1 and is directly and fixedly connected with the live wire wiring board 3, and the zero wire wiring board 2 passes through the zero sequence transformer 1 and is connected with a leakage tripping assembly in the circuit breaker, so that the process of passing through the zero sequence transformer 1 is simplified, the mode of using flexible wires to pass through is eliminated, resources and cost are saved, the structure of the leakage module is compact and simple, the occupied space of the zero sequence transformer 1, the circuit board 5 and the coil assembly 4 is reduced, the space of an arc extinguishing system of the circuit breaker is prevented from being occupied, the breaking capacity, the temperature rise electromagnetic compatibility and other performances of the circuit breaker are ensured not to be influenced, and the volume of the circuit breaker is reduced.
In this embodiment, the live wire wiring board 3 and the neutral wire wiring board 2 are symmetrically arranged about the central axis of the zero sequence transformer 1, so that the structure of the leakage module is stable and compact, an insulating piece 6 is arranged between the live wire wiring board 3 and the neutral wire wiring board 2, the insulating piece 6 is positioned in the zero sequence transformer 1, the live wire wiring board 3 and the neutral wire wiring board 2 are spaced apart by the insulating piece 6, and the live wire wiring board 3 and the neutral wire wiring board 2 are prevented from being in contact conduction; preferably, the insulating piece 6 is a plastic piece, and the plastic piece has certain elasticity, so that the insulating piece 6 is convenient to install in the zero sequence transformer 1 on one hand, and on the other hand, due to the elastic restoring force of the insulating piece 6, the insulating piece not only can play a role in buffering the live wire wiring board 3 and the zero line wiring board 2, but also can fix the live wire wiring board 3 and the zero line wiring board 2 in the zero sequence transformer 1, and the live wire wiring board 3 and the zero line wiring board 2 are prevented from swinging or shifting.
In this embodiment, a fastening groove 422 is disposed at one end of the coil frame 42 near the stationary contact 45, and a fastening ring 443 fastened with the fastening groove 422 is disposed at one end of the magnetic conductive sheet 44, where the fastening ring 443 abuts against the iron core 41. When the coil frame 42 and the magnetic conductive sheet 44 are assembled, the buckling ring 443 of the magnetic conductive sheet 44 is buckled in the buckling groove 422 of the coil frame 42, and is matched with the buckling groove 422 through the buckling ring 443, so that the coil frame 42 and the magnetic conductive sheet 44 are assembled conveniently, and the coil 43 and the magnetic conductive sheet 44 can be firmly connected.
In this embodiment, the magnetic conductive sheet 44 has a U-shaped structure, a positioning ring 421 is disposed at one end of the coil frame 42 away from the stationary contact 45, the positioning ring 421 is arc-shaped, a positioning groove 441 matched with the positioning ring 421 is disposed at the other end of the magnetic conductive sheet 44, and the positioning groove 441 is an arc groove. When the coil frame 42 and the magnetic conductive sheet 44 are assembled, the positioning ring 421 of the coil frame 42 is accommodated in the positioning groove 441 of the magnetic conductive sheet 44, and the positioning groove 441 positions the positioning ring 421, so that the magnetic conductive sheet 44 and the coil frame 42 are assembled conveniently, and the position degree between the magnetic conductive sheet 44 and the coil frame 42 is ensured.
In this embodiment, the magnetic conductive sheet 44 is provided with an extension portion 442, the extension portion 442 is in a hook shape, and the stationary contact 45 is mounted on the extension portion 442, so that the stationary contact 45 is conveniently connected or disconnected with a moving contact in the circuit breaker, and maintenance or replacement of the stationary contact 45 is also facilitated.
In this embodiment, a free end of the coil 43 is welded to the fire wire connection board 3, so that stability of connection between the free end of the coil 43 and the fire wire connection board 3 is improved, and loosening of the coil 43 and the fire wire connection board 3 is avoided.
In this embodiment, the neutral connection board 2 is provided with a fixing hole 21 for connecting with an external leakage tripping assembly, and preferably, the fixing hole 21 is a threaded hole. After one end of the zero line wiring board 2 passes through the zero sequence transformer 1, the zero line wiring board 2 is in threaded connection with a leakage tripping assembly in the circuit breaker through a fixing hole 21, and the assembly is convenient and quick.
In this embodiment, zero line wiring board 2 is integrated into one piece structure, has improved the structural stability and the intensity of zero line wiring board 2, zero line wiring board 2 is including being the wiring portion 22 of L column structure, connect in the kink 23 of wiring portion 22 and connect in the fixed part 24 of kink 23, kink 23 is U column structure, kink 23 runs through zero sequence transformer 1, fixed orifices 21 set up in fixed part 24, fixed part 24 is located one side that zero sequence transformer 1 is close to coil block 4, wiring portion 22, fixed part 24 are located the both sides of zero sequence transformer 1 respectively, and the structural design of this zero line wiring board 2 is ingenious for zero line wiring board 2 and the required occupation space of zero sequence transformer 1 have been saved to the structural compact of zero line wiring board 2.
The invention also provides a circuit breaker, which comprises a shell and the leakage module, wherein the leakage module is arranged in the shell. The circuit breaker has the beneficial effects of the leakage module and is not described in detail herein.
All technical features in the embodiment can be freely combined according to actual needs.
The foregoing embodiments are preferred embodiments of the present invention, and in addition, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (10)
1. A leakage module for a circuit breaker, characterized by: including zero sequence transformer, zero line wiring board, live wire wiring board, coil pack and the circuit board of being connected with the zero sequence transformer electricity, the coil pack is including setting up in the iron core of one side of zero sequence transformer, suit in the coil former of iron core, winding in the coil of coil former, connect in the magnetic conductive sheet of iron core and install in the stationary contact of magnetic conductive sheet, zero line wiring board and live wire wiring board all are located the opposite side that the coil pack was kept away from to the zero sequence transformer, the one end of live wire wiring board is stretched out to the zero sequence transformer in, the one end of zero line wiring board runs through the zero sequence transformer and is used for being connected with external electric leakage tripping device, a free end of coil is stretched out to the zero sequence transformer in and is connected with the live wire wiring board, another free end of coil is connected with the magnetic conductive sheet.
2. The leakage module of a circuit breaker according to claim 1, wherein: the live wire wiring board and the zero line wiring board are symmetrically arranged about the central axis of the zero sequence transformer, an insulating piece is arranged between the live wire wiring board and the zero line wiring board, and the insulating piece is positioned in the zero sequence transformer.
3. The leakage module of a circuit breaker according to claim 1, wherein: the coil former is close to the one end of stationary contact and is provided with the buckle groove, the one end of magnetic conduction piece is provided with the buckle ring of buckle with the buckle groove buckle, buckle ring is contradicted with the iron core.
4. A leakage module for a circuit breaker according to claim 3, wherein: the magnetic conduction sheet is U-shaped structure, the one end that the coil former kept away from the stationary contact is provided with the holding ring, the other end of magnetic conduction sheet is provided with holding ring complex constant head tank.
5. The leakage module of a circuit breaker according to claim 1, wherein: the magnetic conduction piece is provided with an extension part, the extension part is in a hook shape, and the stationary contact is arranged on the extension part.
6. The leakage module of a circuit breaker according to claim 1, wherein: a free end of the coil is welded to the live wire terminal block.
7. The leakage module of a circuit breaker according to claim 1, wherein: the zero line wiring board is provided with a fixed hole for being connected with an external leakage tripping assembly.
8. The leakage module of a circuit breaker of claim 7, wherein: the zero line wiring board is including being the wiring portion of L column structure, connect in the kink of wiring portion and connect in the fixed part of kink, the kink is U column structure, and the kink runs through zero sequence transformer, the fixed orifices sets up in the fixed part, the fixed part is located one side that zero sequence transformer is close to the coil assembly, wiring portion, fixed part are located the both sides of zero sequence transformer respectively.
9. The leakage module of a circuit breaker according to claim 1, wherein: the coil is an enameled wire.
10. A circuit breaker, characterized in that: comprising a housing and the leakage module according to any one of claims 1 to 9, said leakage module being provided in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324497.7A CN109273332B (en) | 2018-11-08 | 2018-11-08 | Leakage module of circuit breaker and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324497.7A CN109273332B (en) | 2018-11-08 | 2018-11-08 | Leakage module of circuit breaker and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109273332A CN109273332A (en) | 2019-01-25 |
| CN109273332B true CN109273332B (en) | 2023-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811324497.7A Active CN109273332B (en) | 2018-11-08 | 2018-11-08 | Leakage module of circuit breaker and circuit breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN109273332B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110120327A (en) * | 2019-05-23 | 2019-08-13 | 厦门安达兴电气集团有限公司 | The detection of electrical leakage tripping attachment and leakage circuit breakers of preposition zero sequence current mutual inductor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000149757A (en) * | 1998-11-04 | 2000-05-30 | Fuji Electric Co Ltd | Earth leakage circuit breaker |
| KR20070093498A (en) * | 2006-03-14 | 2007-09-19 | 상도전기통신 주식회사 | Compact leakage breaker having over current and short protection |
| CN101399418A (en) * | 2007-09-30 | 2009-04-01 | 黄华道 | Novel leakage protection socket |
| CN201820720U (en) * | 2010-10-11 | 2011-05-04 | 大江控股集团有限公司 | Residual current circuit breaker |
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN204966436U (en) * | 2015-06-19 | 2016-01-13 | 浙江正泰电器股份有限公司 | Circuit breaker |
| CN209000849U (en) * | 2018-11-08 | 2019-06-18 | 东莞基业电气设备有限公司 | A kind of electric leakage module and breaker of breaker |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102780205B (en) * | 2011-05-11 | 2015-01-14 | 黄华道 | Electric leakage detecting protection circuit |
-
2018
- 2018-11-08 CN CN201811324497.7A patent/CN109273332B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000149757A (en) * | 1998-11-04 | 2000-05-30 | Fuji Electric Co Ltd | Earth leakage circuit breaker |
| KR20070093498A (en) * | 2006-03-14 | 2007-09-19 | 상도전기통신 주식회사 | Compact leakage breaker having over current and short protection |
| CN101399418A (en) * | 2007-09-30 | 2009-04-01 | 黄华道 | Novel leakage protection socket |
| CN201820720U (en) * | 2010-10-11 | 2011-05-04 | 大江控股集团有限公司 | Residual current circuit breaker |
| WO2013013415A1 (en) * | 2011-07-28 | 2013-01-31 | 深圳市良辉科技有限公司 | Ground wire safe voltage control system |
| CN204966436U (en) * | 2015-06-19 | 2016-01-13 | 浙江正泰电器股份有限公司 | Circuit breaker |
| CN209000849U (en) * | 2018-11-08 | 2019-06-18 | 东莞基业电气设备有限公司 | A kind of electric leakage module and breaker of breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109273332A (en) | 2019-01-25 |
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Address after: 523042 No. 37, Fenxi Road, Wanjiang street, Dongguan City, Guangdong Province Patentee after: DONGGUAN KEIYIP ELECTRICAL EQUIPMENT Co.,Ltd. Address before: No.360 Fenxi Road, Yanwu community, Wanjiang District, Dongguan City, Guangdong Province, 523042 Patentee before: DONGGUAN KEIYIP ELECTRICAL EQUIPMENT Co.,Ltd. |
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