Design method for power transformer low voltage side outlet apparatus

A technology for power transformers and design methods, applied in the directions of transformer/inductor coil/winding/connection, multi-conductor connector, clamping/spring connection, etc. Discharge consumption and other issues, to achieve the effect of reducing current density, reducing consumption, and saving resources

Inactive Publication Date: 2016-10-26
龚柱
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And increasing the overlap length will increase the amount of busbars, thereby increasing the manufacturing cost
The bolts used for fastening will reduce the electrical clearance or safety distance between conductive parts and non-conductive parts. Large spacing will inevitably cause the transformer to take up more space

Method used

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  • Design method for power transformer low voltage side outlet apparatus
  • Design method for power transformer low voltage side outlet apparatus
  • Design method for power transformer low voltage side outlet apparatus

Examples

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Embodiment 2

[0067] In the first embodiment, the material of the first columnar part 1 is changed to a copper alloy, and the material of the second columnar part 2 is changed to an aluminum alloy. Since the hardness of the alloy is relatively high, the second columnar part 2 can be placed in a low temperature environment ( 5 degrees) for a period of time (5 minutes), while the first columnar part 1 is stored for a period of time (5 minutes) in a high temperature environment (80 degrees), with the help of the effect of thermal expansion and contraction, the inner diameter of the first columnar part 1 Slightly larger, while the outer diameter of the first columnar part 1 is slightly smaller, and then the second columnar part 2 can be easily assembled into the first columnar part 1. After the assembled connecting column returns to normal temperature, the first columnar part 1 Interference fit with the second columnar part 2 can be realized. The diameter and length of the connecting column dis...

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PUM

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Abstract

The invention discloses a design method for a power transformer low voltage side outlet apparatus, and belongs to the field of power equipment. The design method for the outlet apparatus, disclosed by the invention, comprises the steps of providing a clamping end matched with a low-voltage connection pole and a connecting end matched with a power busbar, and enabling the clamping end and the connecting end to be integrally formed; and arranging a connecting column at the connecting end, enabling the connecting column to be partially embedded in the connecting end and to be in interference fit with the connecting end, arranging a first conductive columnar part in interference fit with the power busbar on the connecting column, coaxially arranging a second conductive columnar part in the first columnar part, enabling the first columnar part to be in interference fit with the second columnar part, and enabling a thermal expansion coefficient of the second columnar part to be greater than that of the first columnar part. The design method disclosed by the invention has the following beneficial effects: 1, more conductive areas are generated under the same lap length, so that the current density is reduced and low temperature rise of the connecting end is realized; 2, the busbar consumption is reduced and resources are saved; and 3, an electric clearance is expanded or a safety distance is increased, and the electric safety of the equipment is improved.

Description

technical field [0001] The invention relates to the field of power equipment, in particular to a design method for a low-voltage side outlet device of a power transformer. Background technique [0002] In the power distribution room of the factory, the connection end of the low-voltage side of the power transformer is usually directly connected with the power busbar, and the power busbar is directly connected to the connection end. Fasten with bolts. Such as Figure 8 In the upper half of the upper section, this connection method needs to overlap the busbar and the output end by a certain length, so that the current density of the contact surface can be maintained within a certain range, so that the temperature rise at the connection can meet the relevant standards. In order to reduce the temperature rise at the joint, it is usually necessary to increase the overlapping length of the busbar and the terminal to increase the contact area, thereby reducing the current density ...

Claims

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Application Information

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IPC IPC(8): H01F27/28H01R11/05H01R4/42
CPCH01F27/28H01R4/42H01R11/05
Inventor 龚柱
Owner 龚柱
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