Lead wire arrangement structure capable of controlling direct current resistance unbalance

Abstract

The present invention discloses a lead wire arrangement structure capable of controlling direct current resistance unbalance, pertaining to the field of transformers. The structure comprises a head copper bar and a tail copper bar. The head copper bar comprises an A phase copper bar, a B phase copper bar and a C phase copper bar. The tail copper bar is a low-voltage neutral point copper bar. The low-voltage neutral point copper bar is provided with a slot. An A phase wire is led from the A phase copper bar, and a tail x of the A phase wire is connected to the left end of the low-voltage neutral point copper bar. A B phase wire is led from the B phase copper bar, and a tail y of the B phase wire is connected to the upper side of the slot. A C phase wire is led from the C phase copper bar, and a tail z of the C phase wire is connected to the right end of the low-voltage neutral point copper bar. A neutral point lead-out wire zero tail is connected to the lower side of the slot. Accordingto the structure, the direct current resistance unbalance can be well controlled. The structure has the advantages of simple process, easiness for operation, reduced cost, safety, reliability, nice appearance of line shape and improved transformer operation performance.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a lead arrangement structure for controlling unbalanced DC resistance. Background technique [0002] In the prior art, it is a common phenomenon that the resistance unbalance rate caused by low voltage and high current exceeds the requirements of national standards, and this problem has always troubled transformer manufacturers and users. [0003] At this stage, in order to ensure that the resistance unbalance rate reaches a reasonable value, it is necessary to increase the size of the low-voltage copper bar, thereby increasing material consumption and occupying space, increasing the overall weight and volume, which not only wastes materials, increases costs, but also wastes space. [0004] It is an urgent problem to develop an effective solution to the DC resistance unbalance problem. Contents of the invention [0005] In order to make up for the deficiencies of the prior art, imp...

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Problems solved by technology

[0002] In the existing technology, it is a common phenomenon that the resistance unbalance rate caused by low voltage and high current exceeds the national standard, and this problem has always troubled transformer manufacturers and users

[0003] At this stage, in order to ensure that the resistance unbalance rate reaches a reasonable value, it is necessary to increase the size of the low-voltage copper bar, thereby increasing material consumption and occupying space, increasing the overall weight and volume, which not only wastes materials, increases costs, but also wastes space

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