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Production process of polyester-imide axially combined lead

A polyesterimide, production process technology, applied in the direction of conductor/cable insulation, organic insulator, plastic/resin/wax insulator, etc., can solve the problem of poor reliability, safety, low thermal shock ability, poor heat resistance, etc. problems, to achieve the effect of strong short-circuit resistance, strong thermal shock resistance, and good tear resistance

Inactive Publication Date: 2011-08-17
JIANGSU ZHONGRONG ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, epoxy resin vacuum casting dry-type transformers are widely used. There are dozens of transformer factories producing them, with a market share of 95%. The disadvantages of this kind of transformers are: low insulation level, poor heat resistance; low ability to withstand thermal shock , partial amplification; poor reliability and security

Method used

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Embodiment Construction

[0027] A production process of polyesterimide axial combined wire according to the present invention, the production process comprises the following steps:

[0028] 1) The bare copper flat wire that is extruded once is used as the raw material;

[0029] 2) Coating 0.09-0.15mm polyesterimide paint on a single bare copper flat wire to obtain a polyesterimide enamelled flat wire;

[0030] 3) Winding DuPont Nomex insulating paper on a single polyesterimide enamelled flat wire;

[0031] 4) Connect 2-4 polyesterimide enamelled flat wires wrapped with Nomex paper in parallel, and combine the narrow sides of the enamelled flat wires side by side, and use DuPont's Nomex insulating paper as a package to obtain polyesterimide axial Combine wires.

[0032] The invention not only meets the standard requirements but also meets the expected requirements in the safe operation environment of the transformer in terms of partial discharge, short-circuit resistance capability, eddy current loss...

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Abstract

The invention discloses a production process of polyester-imide axially combined lead, wherein the production process comprises the following steps: adopting bare copper flat wire extrusion moulded at one time to be as the raw materials; cladding 0.09-0.15mm of polyester-imide paint on a single bare copper flat wire to obtain a polyester-imide enamelled rectangular wire; winding Nomex paper on the single polyester-imide enamelled rectangular wire; parallel connecting 2-4 polyester-imide enamelled rectangular wires winded with the Nomex paper, wherein the narrow faces of the enamelled rectangular wires are combined in parallel; and adopting Nomex paper to wrap the enamelled rectangular wires uniformly, so as to obtain the polyester-imide axially combined lead. The polyester-imide axially combined lead of the invention can satisfy standard requirements on the properties of partial discharge, short circuit resistance and eddy-current loss, and can satisfy requirements under safety running environment of transformers.

Description

technical field [0001] The invention relates to a composite wire, in particular to a production process of polyesterimide axial composite wire. Background technique [0002] As terminal energy-consuming equipment, transformers have great energy-saving potential in many links of national production, especially in power transmission and distribution. At present, epoxy resin vacuum casting dry-type transformers are widely used. There are dozens of transformer factories producing them, with a market share of 95%. The disadvantages of this kind of transformers are: low insulation level, poor heat resistance; low ability to withstand thermal shock , Local amplification; poor reliability and security. With the continuous upgrading of the quality of dry-type transformers, such as partial discharge, short-circuit resistance, eddy current loss, and high current and large capacity requirements. Contents of the invention [0003] In order to overcome the problems existing in the pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/06H01B3/30
Inventor 孙国平冯四平宋宝韫
Owner JIANGSU ZHONGRONG ELECTRIC
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