Non-encapsulated dry type power transformer

A power transformer, dry-type technology, applied in the direction of transformer/inductor coil/winding/connection, etc., can solve the problems of poor insulation performance, shortened service life of transformer, high noise, etc., and achieve the best electrical performance and mechanical performance, environmental protection effect Good, good insulation performance

Inactive Publication Date: 2013-09-25
JIANGSU YUEN TONG ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the design of dry-type power transformers in the prior art is unreasonable, with poor insulation performance, high loss, high noise, and poor env

Method used

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Embodiment Construction

[0008] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0009] Such as figure 1 , figure 2 As shown, the non-encapsulated dry-type power transformer includes a winding assembly 1, an upper fixing member 2 arranged at the top end of the winding assembly 1, and a lower fixing member 3 arranged at the bottom end of the winding assembly 1, and the winding assembly 1 includes Iron core 4, low-voltage winding 5 and high-voltage winding 6 wound on the iron core 4, Nomex insulating paper 7 is arranged between the low-voltage winding 5 and high-voltage winding 6, and the low-voltage winding 5 and high-voltage winding 6 are both Vacuum pressure impregnation with class H solvent-free insulating varnish. In this embodiment, because the high-voltage and low-voltage windings are all subjected to vacuum pressure impregnation with H-class solvent-free insulating varnish and high-temperature solid treatment, they maintain extre...

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PUM

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Abstract

The invention relates to the technical field of power transformer equipment, and in particular relates to a non-encapsulated dry type power transformer which comprises a winding component, an upper fixed part and a lower fixed part, wherein the upper fixed part is arranged on the top of the winding component; the lower fixed part is arranged at the bottom of the winding component; the winding component comprises an iron core, as well as a low-voltage winding and a high-voltage winding which are wound on the iron core; Nomex insulation paper is arranged between the low-voltage winding and the high-voltage winding; both the low-voltage winding and the high-voltage winding are subjected to vacuum pressure impregnation through H-grade solvent-free insulation paint. By adopting the structure, the non-encapsulated dry type power transformer disclosed by the invention has good insulation performance; extremely good electrical performance and mechanical performance of the transformer are kept during the whole service life period; the empty loss and negative loss of the non-encapsulated dry type power transformer are 20% and 25% less than traditional specified requirements; the non-encapsulated dry type power transformer is low in loss and noise and good in environmentally-friendly effect; furthermore, the non-encapsulated dry type power transformer disclosed by the invention is widely used in places having intensive people and high fireproof requirements, such as metros, high-rise buildings, mines and airports, and moist, high-temperature and load fluctuation severe environments.

Description

technical field [0001] The invention relates to the technical field of power transformer equipment, in particular to a non-encapsulated dry-type power transformer. Background technique [0002] At present, the design of dry-type power transformers in the prior art is unreasonable, with poor insulation performance, high loss, high noise, and poor environmental protection effect, which affects the electrical and mechanical properties of the transformer during use and shortens the service life of the transformer. . Contents of the invention [0003] The purpose of the present invention is to provide a non-encapsulated dry-type power transformer with good insulation performance, low loss, low noise, good environmental protection effect and prolonged service life. [0004] In order to solve the problems existing in the background technology, the present invention adopts the following technical solution: a non-encapsulated dry-type power transformer, including a winding assemb...

Claims

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Application Information

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IPC IPC(8): H01F27/28H01F27/32
Inventor 夏鹏
Owner JIANGSU YUEN TONG ELECTRIC
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