CN204760203U - Dry -type on -load voltage -regulating transformer with wiring copper bar - Google Patents
Dry -type on -load voltage -regulating transformer with wiring copper bar Download PDFInfo
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- CN204760203U CN204760203U CN201520453609.4U CN201520453609U CN204760203U CN 204760203 U CN204760203 U CN 204760203U CN 201520453609 U CN201520453609 U CN 201520453609U CN 204760203 U CN204760203 U CN 204760203U
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Abstract
The utility model discloses a dry -type on -load voltage -regulating transformer with wiring copper bar, dry -type on -load voltage -regulating transformer is including (3) unshakable in one's determination, around high -pressure coil (1) and low voltage coil and folder (2) on (3) unshakable in one's determination, the binding post of high -pressure coil (1) is connected through the wiring copper bar (8) and the one end electricity of connecting cable (4), and the bend radius of connecting cable (4) is not less than the quadruple of the outside diameter of cable, wiring copper bar (8) is " L " type structure, the other end and on -load voltage regulating switch (5) the electricity of connecting cable (4) are connected. This patent is equipped with wiring copper bar (8) that are " L " type structure on the transformer wiring terminal, accomplish the rotary arc length of the planar conversion of wiring, cancellation connecting cable (4) with wiring copper bar (8). So not only can solve transformer and on -load voltage regulating switch (5) when being connected, the problem of alternate cable, looks cable and inlet wire cable frogging, length that can also effective reducing coupling cable (4).
Description
Technical field
The utility model relates to Dry-Transformer Technology field, particularly relates to a kind of dry type on-load tap-changing transformer with copper busbar.
Background technology
The places such as dry-type transformer is widely used in localized lighting, skyscraper, airport, harbour CNC plant equipment, briefly dry-type transformer just refers to that iron core and winding are not immersed in the transformer in insulating oil.The type of cooling is divided into natural air cool (AN) and force Air flow (AF).During natural air cooling, transformer can run continuously for a long time under rated capacity.During forced air cooling, transformer output capacity can improve 50%.Be applicable to interrupted running overload, or emergent accident running overload; Because load loss during overload and impedance voltage amplification are comparatively large, are in non-economy running status, therefore it should not made to be in long-time continuous running overload.Dry-type transformer is mainly divided into open type, closed, cast-type three kinds of forms.
Be directed to the dry-type transformer of cast-type, dry-type transformer is owing to being subject to the restriction of existing mold and resin-cast technique, as shown in Figure 1, binding post is all planar structures, the connector lug of cable is connected with transformer connecting terminal must at grade, then could be connected with loaded switch through a larger revolution arc length.Due to loaded switch compact conformation, the close together of every phase shunting switch, when transformer is connected with on-load voltage regulating switch, causes alternate cable, phase cable intersects with inlet wire cable outlet.Problem is there will not be in the cable cross-cutting issue short time, but aging along with cable insulation, will transformer short circuit fault be caused, burn transformer, loaded switch and stube cable thereof.
Utility model content
The technical problems to be solved in the utility model is: the copper busbar using a kind of bending structure, realize dry-type transformer to be connected with the reliable of on-load voltage regulating switch, reduce cable radius bend, solve the problem that in field-mounted process, alternate cable, phase cable intersect with inlet wire cable.
The technical scheme that the utility model is taked for the technical problem existed in solution known technology is:
With a dry type on-load tap-changing transformer for copper busbar, described dry type on-load tap-changing transformer comprises iron core (3), be around in high-tension coil (1) on described iron core (3) and low-voltage coil and folder (2); It is characterized in that: the binding post of described high-tension coil (1) is electrically connected with one end of stube cable (4) by copper busbar (8), and the bending radius of described stube cable (4) is not less than four times of the outside diameter of cable; Described copper busbar (8) is in " L " type structure; The other end of described stube cable (4) is electrically connected with on-load voltage regulating switch (5).
The advantage that the utility model has and good effect are:
By adopting technique scheme, this patent is equipped with the copper busbar (8) in " L " type structure on transformer connecting terminal, complete the conversion of wiring plane with copper busbar (8), cancel the revolution arc length of stube cable (4).So not only can solve transformer when being connected with on-load voltage regulating switch (5), the problem that alternate cable, phase cable intersect with inlet wire cable, effectively can also reduce the length of stube cable (4).
Accompanying drawing explanation
Fig. 1 is the vertical view that conventional dry on-load tap-changing transformer is connected with on load tap changer;
Fig. 2 is the front view with the dry type on-load tap-changing transformer high-tension coil of copper busbar in this patent preferred embodiment;
Fig. 3 is the end view with the dry type on-load tap-changing transformer high-tension coil of copper busbar in this patent preferred embodiment;
Fig. 4 is connected vertical view with the dry type on-load tap-changing transformer of copper busbar with on load tap changer;
In figure: 1, high-tension coil; 2, folder; 3, unshakable in one's determination; 4, stube cable; 5, on-load voltage regulating switch; 6, inlet wire cable; 7, binding post; 8, copper busbar; Distance between the alternate cable of L, AB; Distance between the alternate cable of M, BC.
Embodiment
For utility model content of the present utility model, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 2 to Fig. 4, with a dry type on-load tap-changing transformer for copper busbar, the technical characteristic identical with conventional dry on-load tap-changing transformer has: described dry type on-load tap-changing transformer comprise unshakable in one's determination 3, be around in high-tension coil 1 on described unshakable in one's determination 3 and low-voltage coil and folder 2; The technical characteristic not identical with conventional dry on-load tap-changing transformer has: the binding post of described high-tension coil 1 is electrically connected with one end of stube cable 4 by copper busbar 8, and the bending radius of described stube cable (4) is not less than four times of the outside diameter of cable; Described copper busbar 8 is in " L " type structure; The other end of described stube cable 4 is electrically connected with on-load voltage regulating switch 5.
Fig. 1 is the vertical view that conventional dry on-load tap-changing transformer is connected with on load tap changer, wherein: transformer coil binding post and loaded switch binding post 7 are all at grade, because stube cable 4 hardness is large, transformer and loaded switch terminal 7 are interconnected can only by the adjustment of cable travel direction, and therefore radius bend will strengthen.Distance M between the distance L cable alternate with BC caused between the alternate cable of AB reduces by this, subscriber's drop cable 6 and stube cable 4 are apart from reduction, for transformer capacity at 1250kVA and following transformer, by the problem that there will be alternate cable, phase cable intersects with inlet wire cable;
Fig. 4 is connected vertical view with the dry type on-load tap-changing transformer of copper busbar with on load tap changer; The binding post 7 of transformer high-voltage coil 1 and on-load voltage regulating switch 5 is equipped with copper busbar 8, and copper busbar 8 is in " L " type structure; Replaced the arc fold bending of old anatomical connectivity cable 4 by this copper busbar 8, not only increase the alternate cable distance of A, B, C three-phase, also shorten the actual use length of cable simultaneously.
Adopt the method to improve the make efficiency of on-site cable, simple to operate, product appearance is significantly improved.Consider from security standpoint, evaded alternate cable, problem that phase cable intersects with inlet wire cable, prevent the accident causing transformer short-circuit because cable insulation is aging from occurring.
Above embodiment of the present utility model has been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (1)
1., with a dry type on-load tap-changing transformer for copper busbar, described dry type on-load tap-changing transformer comprises iron core (3), be around in high-tension coil (1) on described iron core (3) and low-voltage coil and folder (2); It is characterized in that: the binding post of described high-tension coil (1) is electrically connected with one end of stube cable (4) by copper busbar (8), and the bending radius of described stube cable (4) is not less than four times of the outside diameter of cable; Described copper busbar (8) is in " L " type structure; The other end of described stube cable (4) is electrically connected with on-load voltage regulating switch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453609.4U CN204760203U (en) | 2015-06-26 | 2015-06-26 | Dry -type on -load voltage -regulating transformer with wiring copper bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520453609.4U CN204760203U (en) | 2015-06-26 | 2015-06-26 | Dry -type on -load voltage -regulating transformer with wiring copper bar |
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|---|---|
| CN204760203U true CN204760203U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520453609.4U Active CN204760203U (en) | 2015-06-26 | 2015-06-26 | Dry -type on -load voltage -regulating transformer with wiring copper bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916414A (en) * | 2015-07-03 | 2015-09-16 | 江苏容天机电科技有限公司 | Lead wire structure of transformer on-load voltage-regulating nine-shift tapping-off switch |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
-
2015
- 2015-06-26 CN CN201520453609.4U patent/CN204760203U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104916414A (en) * | 2015-07-03 | 2015-09-16 | 江苏容天机电科技有限公司 | Lead wire structure of transformer on-load voltage-regulating nine-shift tapping-off switch |
| CN114156070A (en) * | 2021-12-30 | 2022-03-08 | 济南清河电气有限公司 | Oil-immersed transformer |
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| C14 | Grant of patent or utility model | ||
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