CN210778184U - Bus bar for large-current transformer - Google Patents
Bus bar for large-current transformer Download PDFInfo
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- CN210778184U CN210778184U CN201922114738.1U CN201922114738U CN210778184U CN 210778184 U CN210778184 U CN 210778184U CN 201922114738 U CN201922114738 U CN 201922114738U CN 210778184 U CN210778184 U CN 210778184U
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- contact surface
- bus bar
- current transformer
- cylindrical
- bottom part
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Abstract
The utility model discloses a bus bar for a large current transformer, which comprises an integrally formed L-shaped main body, wherein the main body comprises a bottom part, one end of the bottom part is provided with a first contact surface vertical to the bottom part, and the other end is provided with a second contact surface vertical to the bottom part and positioned at the same surface as the first contact surface; the end part of the first contact surface is cylindrical and is externally provided with threads; the second contact surface is cylindrical, the middle of the second contact surface is provided with a screw hole, the bus bar is manufactured in an integrated mode, the design mode of the sectional bus bar in the front is changed, the connection point generated by the segmentation is not formed due to the absence of the segmentation, the resistance of the whole bus bar cannot be increased due to discontinuity of the connection point, the power consumption of the bus bar is effectively reduced, the heat is reduced, the integrated design is not required to be connected with the segments through threads, the loosening hidden danger cannot exist, and the bus bar is safer and more reliable when being applied to a large-current transformer.
Description
Technical Field
The utility model relates to a mutual-inductor technical field, specific theory is a busbar for large current transformer.
Background
A bus bar, also called a laminated bus bar, is a power module electrical connection member of a multilayer laminated structure, which can connect power distribution points of a plurality of circuits. The bus bar has the characteristics of repeatable electrical performance, low inductive reactance, interference resistance, good reliability, space saving, simple and quick assembly and the like, is used as a power conversion device component, and is widely applied to the fields of aviation power systems, communication base stations, war industry, traffic transportation systems, energy sources and the like
The mutual inductor bus bar structure adopts sectional type structural design due to the assembly process problem, and a screw fastening connection mode is used between every two sections for subsequent convenience in installation of mutual inductor coils, so that the bus bar power consumption is overlarge and the heating is serious when the large current is caused due to overlarge contact resistance. Meanwhile, the hidden trouble of loosening exists in the fixed connection of the screws, so that the reliability of the mutual inductor is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a busbar for heavy current transformer for solve the problem that the busbar adopted the connected mode of screw-up among the prior art.
The utility model discloses a following technical scheme solves above-mentioned problem:
a bus bar for a large-current transformer comprises an integrally formed L-shaped main body, wherein the main body comprises a bottom, one end of the bottom is provided with a first contact surface vertical to the bottom, and the other end of the bottom is provided with a second contact surface vertical to the bottom and positioned on the same surface as the first contact surface; the end part of the first contact surface is cylindrical and is externally provided with threads; the second contact surface is cylindrical, the middle of the second contact surface is provided with a screw hole, the bus bar is manufactured in an integrated mode, the design mode of the sectional bus bar in the front is changed, the connection point generated by the segmentation is not formed due to the absence of the segmentation, the resistance of the whole bus bar cannot be increased due to discontinuity of the connection point, the power consumption of the bus bar is effectively reduced, the heat is reduced, the integrated design is not required to be connected with the segments through threads, the loosening hidden danger cannot exist, and the bus bar is safer and more reliable when being applied to a large-current transformer.
Preferably, the bottom is prismatic.
Preferably, the first contact surface is prism-shaped, the width of the first contact surface is smaller than that of the bottom connection surface, and the bent part is provided with a smooth transition of an arc surface.
Preferably, the cylindrical cross section of the end of the first contact surface is smaller than the cross section of the first contact surface.
Preferably, the body is made of T2 red copper.
Preferably, the surface of the body is silvered.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model discloses wholly adopt the integrated design, avoided current busbar because a plurality of concatenations department leads to the too big condition of contact resistance, also eliminated the hidden danger that the pine takes off, reduced the busbar consumption and generated heat, promoted the reliability.
(2) The utility model discloses corresponding optimization has also been made to the material and the surface treatment of busbar, has selected the relatively comparatively better T2 red copper of electric conductive property in the material, and its IACS electric conductivity is 98%, is inferior to silver and anaerobic copper only, and T2 red copper has good heat conductivility simultaneously, can play better radiating effect.
(3) The utility model discloses silver-plating is made on the surface and is handled, and silver hardness is lower, and screw thread pair contact is better under the effect of pretension, can further reduce with input-output line's contact resistance, and then reduces the busbar consumption and the temperature that generates heat, and can further promote the electric conductivity of busbar owing to the good electric conductive property of silvering.
Drawings
Fig. 1 is a schematic perspective view of a bus bar according to the present invention;
1-end; 2-a second contact surface; 3-bottom; 4-first contact surface.
Detailed Description
The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.
Example 1:
referring to fig. 1, a bus bar for a large current transformer comprises an integrally formed L-shaped main body, wherein the main body comprises a bottom 3, one end of the bottom 3 is provided with a first contact surface 4 perpendicular to the bottom, and the other end of the bottom 3 is provided with a second contact surface 2 perpendicular to the bottom 3 and located on the same plane as the first contact surface 4; the end part 1 of the first contact surface 4 is cylindrical and is externally provided with threads; the second contact surface 2 is cylindrical, and a screw hole is formed in the middle of the second contact surface.
For better conductivity and heat dissipation effect, the embodiment adopts T2 red copper with relatively good conductivity as the material of the bus bar, the IACS conductivity of T2 red copper is 98%, which is second only to silver and oxygen-free copper, and meanwhile, T2 red copper has good heat conductivity, and can play a better heat dissipation effect.
In addition, silver plating is carried out on the outer surface of the bus bar, due to the fact that silver hardness is low, contact of the thread pair is good under the action of a pre-tightening force, contact resistance between the thread pair and an input/output line can be further reduced, power consumption and heating temperature of the bus bar are further reduced, silver plating has good conductivity, and overall conductivity of the bus bar can be further improved.
In order to facilitate installation in use, the bottom 3 of the bus bar is prismatic, the first contact surface 4 is also prismatic, the width of the first contact surface is smaller than that of the connection surface of the bottom 3, and the cylindrical cross section of the end portion 1 of the first contact surface 4 is smaller than that of the first contact surface 4, so that connection and fixation are facilitated. Design into so the appearance when being convenient for the installation, the outward flange design at the position that the contact surface of busbar is connected with bottom 3 becomes same shape size, makes it at the coplanar, and sets up cambered surface smooth transition in the department of buckling, can promote electric conductivity under the prerequisite of the installation of being convenient for, reduces the consumption and generates heat.
Although the present invention has been described herein with reference to the illustrated embodiments thereof, which are merely preferred embodiments of the present invention, it is to be understood that the present invention is not limited thereto, and that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (6)
1. A busbar for a high current transformer, characterized in that: the L-shaped body is integrally formed and comprises a bottom, wherein one end of the bottom is provided with a first contact surface vertical to the bottom, and the other end of the bottom is provided with a second contact surface vertical to the bottom and positioned on the same surface as the first contact surface; the end part of the first contact surface is cylindrical and is externally provided with threads; the second contact surface is cylindrical, and a screw hole is formed in the middle of the second contact surface.
2. The bus bar for a large current transformer as claimed in claim 1, wherein: the bottom is prismatic.
3. The bus bar for a large current transformer according to claim 2, wherein: the first contact surface is prismatic, the width of the first contact surface is smaller than that of the bottom connection surface, and the bent part is provided with a cambered surface for smooth transition.
4. The bus bar for a large current transformer according to claim 3, wherein: the cylindrical cross section of the end part of the first contact surface is smaller than the cross section area of the first contact surface.
5. The bus bar for a large current transformer as claimed in claim 1, wherein: the main body is made of T2 red copper.
6. The bus bar for a large current transformer according to claim 5, wherein: the surface of the main body is plated with silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114738.1U CN210778184U (en) | 2019-11-29 | 2019-11-29 | Bus bar for large-current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922114738.1U CN210778184U (en) | 2019-11-29 | 2019-11-29 | Bus bar for large-current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210778184U true CN210778184U (en) | 2020-06-16 |
Family
ID=71066680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922114738.1U Active CN210778184U (en) | 2019-11-29 | 2019-11-29 | Bus bar for large-current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210778184U (en) |
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2019
- 2019-11-29 CN CN201922114738.1U patent/CN210778184U/en active Active
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