Transformer iron core grounding lead structure

A grounding lead, transformer technology, applied in the direction of transformer/inductor coil/winding/connection, transformer/inductor parts, electrical components, etc., can solve problems such as damage to the porcelain sleeve, high manufacturing cost, damage to the solid insulation of the transformer, etc.

Inactive Publication Date: 2018-06-15
TIANWEI BAOBIAN HEFEI TRANSFORMER
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  • Abstract
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  • Claims
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Problems solved by technology

During the operation of the transformer, the electric field formed between the charged winding and the lead wire and the oil tank is an inhomogeneous electric field, and the iron core and other metal components are in this electric field. Because the positions of the iron core and other metal components are different, the potentials are also different. When When the potential difference between two points reaches the insulation breakdown between them, spark discharge will be generated, which will gradually damage the solid

Method used

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  • Transformer iron core grounding lead structure
  • Transformer iron core grounding lead structure

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Example Embodiment

[0016] Such as Figure 1 to Figure 2 As shown, the present invention provides a transformer core grounding lead structure, including: a base 2 provided on the transformer body 1, an insulated terminal board 10 provided on the base 2, and an insulated terminal board 10 provided on the base 2 and covered by the insulated terminal board 10. External shield 4. The mounting flange 3 is used to press the insulating terminal board 10, the insulating terminal board 10 is between the end cover 8 and the mounting flange 3. The insulating terminal board 10 is made of epoxy resin injection molding, and the terminals are directly poured on the insulating terminal On the plate 10, it can be ensured that the seal does not leak oil.

[0017] The base 2 includes a side wall 7 connected to the transformer body 1, and an end cover 8 arranged on the side wall 7. The area of ​​the insulating terminal plate 10 is smaller than that of the end cover 8; the insulating terminal plate 10 is provided with ...

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Abstract

The invention relates to the technical field of a power transformer, and particularly relates to a transformer iron core grounding lead structure. The transformer iron core grounding lead structure comprises a base, an insulating terminal plate and a protection cover; the base comprises side walls and an end cover; multiple terminals are arranged on the insulating terminal plate; a grounding wireand a lead are arranged in the base; and a measurement cable is arranged in the protection cover. The transformer iron core grounding lead structure does not need a sleeve and a copper bar, so that the manufacturing cost is lowered; the insulating terminal plate can be sealed conveniently, without causing oil seepage and leakage easily; and by virtue of the protection cover, complete protection performance is provided, and damage caused by external force can be avoided effectively, so that the transformer iron core grounding lead structure can be widely applicable to various power transformers.

Description

technical field [0001] The invention relates to the technical field of power transformers, in particular to a transformer core grounding lead structure. Background technique [0002] In a transformer, windings and iron cores are the main components for transmitting and transforming electromagnetic energy. Therefore, the safety of windings and iron cores is the key to ensure the reliable operation of transformers. During the operation of the transformer, the electric field formed between the charged winding and the lead wire and the oil tank is an inhomogeneous electric field, and the iron core and other metal components are in this electric field. Because the positions of the iron core and other metal components are different, the potentials are also different. When When the potential difference between the two points reaches the point where the insulation between them can be broken down, a spark discharge will be generated. Over time, the solid insulating parts of the trans...

Claims

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Application Information

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IPC IPC(8): H01F27/29H01F27/04H01F27/28
CPCH01F27/28H01F27/04H01F27/2828H01F27/29
Inventor 王长连霍建坤方囡囡刘波王丽辉成花王新新张燕
Owner TIANWEI BAOBIAN HEFEI TRANSFORMER
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