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Lead structure of triangular iron roll core transformer

A technology of transformer and coiled iron core, which is applied in the field of lead wire structure of triangular coiled iron core transformer, which can solve the problems of large difference in copper bar length and excessive DC resistance unbalance rate of transformer winding, etc., so as to reduce consumption and improve DC resistance The effect of unbalance rate and saving production cost

Inactive Publication Date: 2015-02-25
何达江
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the two secondary winding lead taps of the winding adjacent to the primary winding terminal are also set on the side of the phase winding adjacent to the primary winding terminal, however the secondary winding lead taps of the other two-phase windings connected to the secondary winding terminal are all set The two-phase winding is close to the side of the secondary winding terminal, which causes a large difference in the length of the copper bar connected to the secondary winding lead wire tap and the secondary winding terminal of the other two phases, and the resistance value of each phase copper bar has difference, causing the DC resistance unbalance rate of the transformer winding to exceed the standard

Method used

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  • Lead structure of triangular iron roll core transformer
  • Lead structure of triangular iron roll core transformer
  • Lead structure of triangular iron roll core transformer

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Embodiment Construction

[0012] Such as figure 1 , 2 , 3, a lead wire structure of a triangular wound iron core transformer, the three-phase windings A, B, and C of the transformer are respectively composed of primary windings and secondary windings, and the transformer is facing the one-phase winding B One end of the transformer is provided with the primary winding terminals 11, 12, 13, and the secondary winding terminals 21, 22, 23, 24. The phase-to-phase taps of the windings A, B, and C of each phase are connected, and the lead wire taps of the windings A, B, and C of each phase are respectively connected to the corresponding terminals through copper bars, and are adjacent to the primary winding terminals 11, The two secondary winding lead taps 31, 32 of the winding B of 12, 13 are all arranged on the side of the phase winding away from the primary winding terminals 11, 12, 13, and the two secondary winding lead taps 31, 32 are connected to The connecting copper bars 41 and 42 of the correspondin...

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Abstract

The invention provides a lead structure capable of improving direct-current resistance unbalance of a triangular iron roll core transformer. Distance between a winding, away from a secondary winding wiring terminal, of the transformer and a secondary winding wiring terminal is shortened, and a secondary lead tap of the winding is arranged on a side away from a primary wiring terminal, so that difference in length of copper bars of each phase is reduced, and direct-current resistance unbalance of the winding of the triangular iron roll core transformer is improved, copper consumption is reduced, and production cost is saved.

Description

technical field [0001] The invention belongs to the technical field of electric equipment, and in particular relates to a lead wire structure of a triangular wound core transformer. Background technique [0002] The unbalanced DC resistance of the three-phase transformer winding is an important performance parameter of the transformer. The lead wire structure of the transformer is an important reason for the excessive unbalance rate. The secondary terminals are located on opposite sides of the transformer. Since the two secondary winding lead taps of the winding adjacent to the primary winding terminal are also set on the side of the phase winding adjacent to the primary winding terminal, however the secondary winding lead taps of the other two-phase windings connected to the secondary winding terminal are all set The two-phase winding is close to the side of the secondary winding terminal, which causes a large difference in the length of the copper bar connected to the sec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/29H01F27/30
Inventor 何达江
Owner 何达江
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