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Method of connecting sheet to connect low-voltage copper bar and water-cooling terminal of transformer

A water-cooled terminal and connecting piece technology, which is applied in the manufacture of inductors/transformers/magnets, transformer/inductor coils/windings/connections, electrical components, etc., can solve problems such as fatigue fracture of connecting pieces

Inactive Publication Date: 2009-11-18
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for connecting the connecting piece to the low-voltage copper bar of the transformer and the water-cooled terminal, which effectively solves the problem of fatigue fracture of the connecting piece when the transformer has a low-voltage output short circuit or a short-term working short circuit

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  • Method of connecting sheet to connect low-voltage copper bar and water-cooling terminal of transformer
  • Method of connecting sheet to connect low-voltage copper bar and water-cooling terminal of transformer
  • Method of connecting sheet to connect low-voltage copper bar and water-cooling terminal of transformer

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Embodiment Construction

[0034] The method for connecting the connecting piece to the low-voltage copper bar of the transformer and the water-cooling terminal includes the low-voltage copper bar of the transformer, two connecting pieces and the water-cooling terminal. The method includes the following steps,

[0035] Step 1. The two connecting pieces are connected to the water-cooling terminal, and the two connecting pieces form a first current branch and a second current branch. According to the current flowing through each water-cooling sub-terminal, the current flowing through each water-cooling sub-terminal is calculated by the following formula current per connection piece,

[0036] I 1 = I 2 =I / 2

[0037] where I 1 and I 2 are the currents flowing through the first current branch and the second current branch respectively, and I is the current flowing through each water-cooled sub-terminal;

[0038] Step 2, calculate the geometric dimensions of the connecting pieces and the mutual distance ...

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Abstract

The invention discloses a method of connecting sheets to connect a low-voltage copper bar and a water-cooling terminal of a transformer, and the low-voltage copper bar of the transformer is connected with the water-cooling terminal through two connecting sheets. The connection method of the low-voltage copper bar and the water-cooling terminal of the transformer is obtained through the calculation of electromagnetic force received by the two connecting sheets in a circuit under the condition of rated power of the large transformer, and the spacing between the two connecting sheets and the physical dimension of the two connecting sheets are determined. The invention ensures the normal operation of the transformer, and effectively solves the problem that the connecting sheets produce repeated stress failure when the transformer has low-voltage short circuit output or short working short circuit.

Description

technical field [0001] The invention relates to a connection method of a large-scale transformer low-voltage copper bar and a water-cooling terminal, in particular to a method for connecting a large-scale electric furnace transformer or a rectifier transformer low-voltage copper bar and a water-cooling terminal by using a connecting piece. Background technique [0002] The low-voltage current of a large electric furnace transformer or rectifier transformer can reach thousands to hundreds of thousands of amperes. At this time, the low-voltage outlet terminals often use several water-cooled terminals in parallel to lead the low-voltage current from the oil tank. In order to facilitate transformer assembly and eliminate transformer vibration during transformer operation For the impact on the outgoing terminal, use a soft connection piece made of thin copper laminates to connect between the low-voltage copper bar of the large electric furnace transformer or rectifier transformer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/28H01F41/00
Inventor 杨兴隆
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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