CN102915887A - Circuit device and drawer type circuit breaker comprising same - Google Patents
Circuit device and drawer type circuit breaker comprising same Download PDFInfo
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- CN102915887A CN102915887A CN2011102238650A CN201110223865A CN102915887A CN 102915887 A CN102915887 A CN 102915887A CN 2011102238650 A CN2011102238650 A CN 2011102238650A CN 201110223865 A CN201110223865 A CN 201110223865A CN 102915887 A CN102915887 A CN 102915887A
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- terminal
- circuit breaker
- outgoing
- circuit
- incoming
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- 238000004891 communication Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 7
- 239000010949 copper Substances 0.000 abstract description 7
- 229910052709 silver Inorganic materials 0.000 abstract description 5
- 239000004332 silver Substances 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The invention provides a circuit device and a drawer type circuit breaker. The breaker comprises a drawer type frame and a circuit breaker main body, wherein a current loop is arranged on the circuit breaker main body; the current loop comprises an incoming terminal chuck, an incoming terminal chuck bracket, a circuit module in the breaker main body, an incoming terminal contact pad, an outgoing terminal chuck, an outgoing terminal chuck bracket and an outgoing terminal contact pad; the incoming terminal chuck bracket and the outgoing terminal chuck bracket are respectively mounted on the incoming terminal contact pad and the outgoing terminal contact pad, and connected with the circuit module in the circuit breaker main body through the corresponding contact pads; and the incoming terminal chuck and the outgoing terminal chuck are respectively mounted on the incoming terminal chuck bracket and the outgoing terminal chuck bracket. The client terminals and plugs are saved; the length of the circuit is reduced; the contact points are reduced, so that the size of the product is reduced; and the power consumption and the consumption of copper and silver are also reduced.
Description
Technical Field
The present invention relates to a circuit device and a circuit breaker including the same, and more particularly, to a circuit device in a withdrawable circuit breaker and a withdrawable circuit breaker including the same.
Background
The withdrawable circuit breaker is a circuit breaker commonly used in low-voltage power distribution equipment at present, and a schematic diagram of the withdrawable circuit breaker is shown in fig. 1. In fig. 1, 1 denotes the entire circuit breaker, which is composed of a drawer frame 10 and a circuit breaker body 20. The breaker body 20 is pulled out or pushed in from the drawer frame 10 through a guide rail installed on the drawer frame, so that disconnection and communication between the breaker and the inlet and outlet end busbars are realized. Fig. 1 represents the state in which the breaker body 20 is drawn out from the drawer 10.
In the related art, as shown in fig. 2, a circuit device of a drawer type circuit breaker includes a portion provided on a breaker body 20 and a portion provided on a drawer frame 10. Among them, the portion provided on the breaker body 20 includes: a circuit module 206 in the breaker body 20, a line inlet plug 204 mounted on a line inlet contact pad 205 of the breaker body 20, and a line outlet plug 204 'mounted on a line outlet contact pad 205' of the breaker body 20. The two ends of the circuit module 206 in the breaker body 20 are connected to the inlet terminal plug 204 and the outlet terminal plug 204 'through the inlet terminal contact pad 205 and the outlet terminal contact pad 205', respectively. The part arranged on the drawer frame 10 comprises: a line end cartridge 203, a line end cartridge 203 ', a line end cartridge holder bracket 202 ', a line end customer terminal 101, and a line end customer terminal 101 '. The incoming terminal collet 203 and the outgoing terminal collet 203 'are respectively mounted on the incoming terminal collet holder 202 and the outgoing terminal collet holder 202', and the incoming terminal collet holder 202 and the outgoing terminal collet holder 202 'are respectively connected with the incoming terminal customer terminal 101 and the outgoing terminal customer terminal 101'. Each part in the circuit device can be provided with 3 groups or 4 groups according to the requirements of the application occasion, and the 3-pole circuit breaker or the 4-pole circuit breaker corresponds to the part. In each circuit device, a plurality of sets of the inlet terminal chuck 203 and the outlet terminal chuck 203' are provided, respectively, depending on the magnitude of the current.
The busbars of the customer (including the incoming busbar 30 and the outgoing busbar 30 ') are connected to the incoming customer terminal 101 and the outgoing customer terminal 101', respectively. When the breaker body 20 is pushed into the cradle 10, the incoming terminal plug 204 and the outgoing terminal plug 204 'are respectively inserted into the incoming terminal clamp 203 and the outgoing terminal clamp 203' on the cradle 10, and the incoming terminal busbar 30 and the outgoing terminal busbar 30 'are connected to the customer terminals 101 and 101', the breaker is communicated with the incoming terminal busbar and the outgoing terminal busbar, and the elasticity of the clamps ensures reliable contact. The current passes from the inlet terminal busbar 30 through the inlet terminal customer terminal 101 → the inlet terminal cartridge holder 202 → the inlet terminal cartridge 203 → the inlet terminal plug 204 → the breaker body internal circuit module 206 → the outlet terminal plug 204 ' → the outlet terminal cartridge holder 203 ' → the outlet terminal cartridge holder 202 ' → the outlet terminal customer terminal 101 ' → the outlet terminal busbar 30 ' (wherein the wiring can be reversed, and the inlet terminal and the outlet terminal can be interchanged).
Such a structure has the disadvantages of long current path, many contact points, large contact resistance, high power consumption, complex structure and large product size. In addition, because all the conductive parts in the circuit device are made of pure copper, the plating layer is silver plating, and the structure of the circuit breaker is 3 poles or 4 poles, a large amount of copper and silver materials are needed, and the price of the metal materials is increased, so that the product with the structure has the defect of high cost.
Therefore, there is a need to solve these problems.
Disclosure of Invention
The present invention has been made in view of the above problems, and an object of the present invention is to provide a circuit device which can be simple in structure, small in size, less in contact points, low in power consumption, and less in copper and silver consumption.
The invention provides a circuit device, which is used in a drawer type circuit breaker, wherein the circuit breaker comprises a drawing frame and a body, the circuit breaker body can be drawn out or pushed in from the drawing frame, so that the circuit breaker and a bus bar at a wire inlet end and a wire outlet end are in a disconnected or connected state, the current device is arranged on the circuit breaker body, and the current device comprises: the incoming line terminal chuck support and the outgoing line terminal chuck support are respectively installed on the incoming line terminal contact liner and the outgoing line terminal contact liner and are respectively connected with a circuit device in the breaker body through corresponding contact liners, the incoming line terminal chuck and the outgoing line terminal chuck are respectively installed on the incoming line terminal chuck support and the outgoing line terminal chuck support and are used for respectively clamping the incoming line terminal busbar and the outgoing line terminal busbar installed on the breaker drawing frame when the breaker body is pushed into the drawing frame, so that the breaker is communicated with the incoming line terminal busbar and the outgoing line terminal busbar, and the breaker body is respectively separated from the corresponding busbars when the breaker body is drawn out of the drawing frame, so that the breaker is disconnected from the incoming line terminal busbar and the outgoing line terminal busbar.
The invention also provides a drawer type circuit breaker comprising the circuit device.
The circuit device of the invention reduces the length of the circuit device and reduces the contact points by optimizing the structure of the existing circuit device, thereby reducing the size of the product, reducing the power consumption and reducing the consumption of copper and silver.
Drawings
Other aspects, features and advantages will be readily appreciated, as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings.
Fig. 1 is a perspective view of a withdrawable circuit-breaker;
fig. 2 is a schematic diagram of a circuit arrangement in a prior art withdrawable circuit breaker;
FIG. 3 is a schematic diagram of a circuit arrangement of an embodiment of the present invention;
figure 4 is a schematic diagram of a prior art circuit breaker body;
figure 5 is a schematic view of a circuit breaker body (with the cartridge mounted horizontally) in an embodiment of the invention;
figure 6 is a schematic view of a circuit breaker body (with the clamp vertically mounted) in an embodiment of the present invention;
FIG. 7 is a schematic view of a locator card slot in an embodiment of the present invention;
FIG. 8 is an example of a parallel mounting of the busbars with respect to the backplane in an embodiment of the present invention;
fig. 9 is an example of the vertical mounting of the busbars with respect to the backplane in an embodiment of the present invention.
The drawings are intended to depict example embodiments of the disclosure, and should not be interpreted as limiting the scope thereof. The drawings are not to be considered as drawn to scale unless explicitly indicated.
Detailed Description
The present invention will now be described in detail with reference to the drawings and detailed description.
Fig. 3 is a schematic diagram of a circuit arrangement according to an embodiment of the invention. The circuit module 206 in the breaker body 20 is the same as that in the conventional breaker 1, except that the inlet terminal cartridge holder 202 and the outlet terminal cartridge holder 202 ' provided in the drawer frame 10 in the conventional breaker 1 are respectively mounted on the inlet terminal contact pad 205 and the outlet terminal contact pad 205 ' of the breaker body 20 in the present embodiment, and the inlet terminal cartridge 203 and the outlet terminal cartridge 203 ' are respectively mounted on the inlet terminal cartridge holder 202 and the outlet terminal cartridge holder 202 ' for directly clamping the inlet terminal busbar 30 and the outlet terminal busbar 30 '. The line end customer terminal 101, the line end customer terminal 101 ', the line end plug 204, and the line end plug 204' of the prior art circuit breaker are omitted and no current carrying components are mounted on the draw frame 10.
After the busbars 30 and 30 'are mounted on the rack 10, when the breaker body 20 is pushed into the rack 10, the inlet terminal clamp 203 and the outlet terminal clamp 203' clamp the inlet terminal busbar 30 and the outlet terminal busbar 30 'fixed to the rack, respectively, so that current flows from the inlet terminal busbar 30 through the inlet terminal clamp 203 → the inlet terminal clamp holder 202 → the breaker body internal circuit device 206 → the outlet terminal clamp holder 202' → the outlet terminal clamp 203 '→ the outlet terminal busbar 30' (wherein reverse wiring is possible, and the inlet terminal and the outlet terminal are interchanged).
Fig. 4 is a schematic view of a circuit breaker body 20 in a related art circuit breaker. In the breaker body shown in fig. 4, 3 sets of devices of the inlet terminal and the outlet terminal are provided. As can be seen from the figure, there are 3 sets of inlet end plugs 204 and outlet end plugs 204' provided on the body 20 for insertion into corresponding collets provided in the drawer frame 10. Fig. 5 and 6 are schematic diagrams of the breaker body 20 according to the embodiment of the present invention. The breaker body shown in fig. 5 and 6 is also provided with 3 sets of devices of a wire inlet end and a wire outlet end. As can be seen in the figures, the body 20 is not provided with a plug, but is provided with a line end clamp 203 and a line end clamp 203' directly. Meanwhile, it can be seen that, through four equidistant screw holes on the incoming terminal contact pad 205 and the outgoing terminal contact pad 205 ', the incoming terminal chuck bracket 202 and the outgoing terminal chuck bracket 202 ' can be installed in two directions of 90 ° relatively, so that the incoming terminal chuck 203 and the outgoing terminal chuck 203 ' clamped thereon can also be installed in two directions of 90 ° relatively, as in fig. 5, the incoming terminal chuck 203 and the outgoing terminal chuck 203 ' are installed horizontally (the circuit breaker is placed according to the use state), and the installation manner of the chucks enables the busbar to be installed vertically (the circuit breaker is placed according to the use state) in fig. 6 by the incoming terminal chuck 203 and the outgoing terminal chuck 203 '. The arrangement realizes the field selection of parallel installation of the busbar relative to the backboard and vertical installation of the busbar relative to the backboard.
As shown in fig. 7, the back plate of the drawer has a slot (102, 103, 102 ', 103') for mounting the busbar, so that the customer can conveniently and accurately mount the busbar on the drawer 10. In fig. 7, 102 and 102 'are card slots for mounting the busbar perpendicularly to the backplane, and 103' are card slots for mounting the busbar parallel to the backplane. In order to fix the busbar to the back plate, it is necessary to fix the busbar by using a fastener (not shown) such as a screw. Of course, the method of fixing it is not limited to screws, and any fixing method commonly used by those skilled in the art is also used in this case.
Fig. 8 is an example of the parallel mounting of the busbars with respect to the backplane in an embodiment of the present invention. The busbar 31, 31' mounted in this way has an L-shaped configuration as shown in fig. 8. Fig. 9 is an example of a vertical mounting of the busbars with respect to the backplane in an embodiment of the invention, the structure of the busbars 30, 30' mounted in this manner being elongated without the bent portions of the busbars in fig. 8.
As can be seen from the above description, the formed circuit arrangement, compared to the circuit arrangement in the existing circuit breaker, omits two parts, namely the plug and the customer terminal, greatly simplifies the structure, reduces the contact points, reduces the contact resistance, and reduces the volume, enabling a more flexible layout in the power distribution cabinet. Since both parts need to be made of copper, omitting both parts also saves copper consumption, reducing costs. Moreover, the improvement fully utilizes the devices in the existing circuit breaker, and no additional design and any processing part are needed, and no modification is needed to be carried out on other parts of the existing circuit breaker.
In describing the embodiments illustrated in the drawings, specific terminology is employed for the sake of clarity. However, the disclosure of this patent specification is not intended to be limited to the specific terminology so selected, and it is to be understood that each specific element includes all technical equivalents that operate in a similar manner and achieve a similar result.
It will be obvious that the same may be varied in many ways with respect to some embodiments of the invention that have been thus described. Such variations are not to be regarded as a departure from the scope of the invention, and all such modifications are intended to be included within the scope of the invention.
Claims (9)
1. A circuit device is used in a drawer type circuit breaker comprising a drawing frame and a circuit breaker body, wherein the circuit breaker body can be drawn out or pushed in from the drawing frame to ensure that the circuit breaker is in a disconnected or connected state with a bus bar at an inlet end and an outlet end,
it is characterized in that the preparation method is characterized in that,
the circuit device is arranged on the circuit breaker body and comprises: a wire inlet end chuck, a wire inlet end chuck bracket, a circuit module in the breaker body, a wire inlet end contact liner, a wire outlet end chuck bracket and a wire outlet end contact liner,
wherein,
the incoming line end chuck support and the outgoing line end chuck support are respectively arranged on the incoming line end contact liner and the outgoing line end contact liner and are respectively connected with the circuit module in the breaker body through the corresponding contact liners,
the incoming line end chuck and the outgoing line end chuck are respectively arranged on the incoming line end chuck support and the outgoing line end chuck support and are used for respectively clamping an incoming line end busbar and an outgoing line end busbar arranged on the circuit breaker drawing frame when the circuit breaker body is pushed into the drawing frame, so that the circuit breaker is in a communication state with the incoming line end busbar and the outgoing line end busbar, and the circuit breaker body is respectively separated from the corresponding busbars when the circuit breaker body is drawn out of the drawing frame, so that the circuit breaker is in a disconnection state with the incoming line end busbar and the outgoing line end busbar.
2. The circuit device of claim 1 wherein four equidistant threaded holes are provided in the inlet terminal contact pad and the outlet terminal contact pad for allowing the inlet terminal clamp and the outlet terminal clamp to be installed in two directions that are 90 ° relative to each other.
3. The circuit device of claim 2 wherein said incoming and outgoing terminal clamps are mounted in a horizontal orientation.
4. The circuit device of claim 2 wherein said incoming and outgoing terminal clamps are mounted in a vertical orientation.
5. A drawer type circuit breaker comprises a circuit breaker body and a drawing frame, wherein the circuit breaker body can be drawn out or pushed in from the drawing frame to ensure that the circuit breaker and a bus bar at a wire inlet end and a wire outlet end are in a disconnected or connected state,
it is characterized in that the preparation method is characterized in that,
the circuit breaker body includes: a wire inlet end chuck, a wire inlet end chuck bracket, a circuit module in the breaker body, a wire inlet end contact liner, a wire outlet end chuck bracket and a wire outlet end contact liner,
wherein,
the incoming line end chuck support and the outgoing line end chuck support are respectively arranged on the incoming line end contact liner and the outgoing line end contact liner and are respectively connected with the circuit module in the breaker body through the corresponding contact liners,
the incoming line terminal chuck and the outgoing line terminal chuck are respectively arranged on the incoming line terminal chuck support and the outgoing line terminal chuck support and are used for respectively clamping an incoming line terminal busbar and an outgoing line terminal busbar arranged on the circuit breaker drawing frame when the circuit breaker body is pushed into the drawing frame, so that the circuit breaker is in a communication state with the incoming line terminal busbar and the outgoing line terminal busbar, and the circuit breaker body is respectively separated from the corresponding busbars when the circuit breaker body is drawn out of the drawing frame, so that the circuit breaker is in a disconnection state.
6. The withdrawable circuit-breaker according to claim 5, wherein a card slot for mounting the busbar is provided on a back plate of the withdrawable rack.
7. The withdrawable circuit breaker according to claim 5, characterized in that four equidistant screw holes are provided on the inlet terminal contact pad and the outlet terminal contact pad for allowing the inlet terminal cartridge and the outlet terminal cartridge to be installed in two directions opposite to 90 °.
8. The withdrawable circuit breaker according to claim 7, wherein the incoming terminal holder and the outgoing terminal holder are installed in a horizontal direction.
9. The withdrawable circuit breaker according to claim 7, wherein the incoming terminal holder and the outgoing terminal holder are installed in a vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223865.0A CN102915887B (en) | 2011-08-05 | 2011-08-05 | Circuit arrangement and comprise the withdrawable circuit breaker of this circuit arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223865.0A CN102915887B (en) | 2011-08-05 | 2011-08-05 | Circuit arrangement and comprise the withdrawable circuit breaker of this circuit arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102915887A true CN102915887A (en) | 2013-02-06 |
| CN102915887B CN102915887B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110223865.0A Active CN102915887B (en) | 2011-08-05 | 2011-08-05 | Circuit arrangement and comprise the withdrawable circuit breaker of this circuit arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102915887B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535643A (en) * | 2018-06-22 | 2018-09-14 | 杭州之江开关股份有限公司 | A kind of breaker three-phase high-current detector and its operating method |
| CN109494570A (en) * | 2017-09-11 | 2019-03-19 | Abb股份公司 | Low-tension distribution board |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108985A (en) * | 1984-12-12 | 1986-08-06 | 西屋电气公司 | The drawout switchgear apparatus that has extensible track |
| US6244891B1 (en) * | 1999-11-05 | 2001-06-12 | Siemens Energy & Automation, Inc. | Circuit breaker movement structure with snap-on draw bracket assembly |
| CN2511025Y (en) * | 2001-10-21 | 2002-09-11 | 无锡市新一代电力电器有限公司 | Dual-power-supply hand-cart type high-voltage switch cabinet |
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN202206054U (en) * | 2011-08-05 | 2012-04-25 | 施耐德电器工业公司 | Circuit arrangement and drawer type breaker having the same |
-
2011
- 2011-08-05 CN CN201110223865.0A patent/CN102915887B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108985A (en) * | 1984-12-12 | 1986-08-06 | 西屋电气公司 | The drawout switchgear apparatus that has extensible track |
| US6244891B1 (en) * | 1999-11-05 | 2001-06-12 | Siemens Energy & Automation, Inc. | Circuit breaker movement structure with snap-on draw bracket assembly |
| CN2511025Y (en) * | 2001-10-21 | 2002-09-11 | 无锡市新一代电力电器有限公司 | Dual-power-supply hand-cart type high-voltage switch cabinet |
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN202206054U (en) * | 2011-08-05 | 2012-04-25 | 施耐德电器工业公司 | Circuit arrangement and drawer type breaker having the same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109494570A (en) * | 2017-09-11 | 2019-03-19 | Abb股份公司 | Low-tension distribution board |
| CN109494570B (en) * | 2017-09-11 | 2022-03-18 | Abb股份公司 | Low-voltage distribution board |
| CN108535643A (en) * | 2018-06-22 | 2018-09-14 | 杭州之江开关股份有限公司 | A kind of breaker three-phase high-current detector and its operating method |
| CN108535643B (en) * | 2018-06-22 | 2023-06-27 | 杭州之江开关股份有限公司 | Three-phase heavy current detection device of circuit breaker and operation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102915887B (en) | 2016-03-02 |
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