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Polyester composite double-insulating enamelled wire for transformer

A double insulation and transformer technology, applied in the direction of transformer/inductor coil/winding/connection, insulated cable, insulated conductor, etc., can solve the problems of reduced performance and service life, reduced insulation performance of enameled wire, damage to enameled wire of transformer coil, etc. Achieve the effects of improving insulation resistance and short circuit resistance, improving performance and service life, and reasonable design

Inactive Publication Date: 2013-09-11
JIANGSU YAWEI TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a sudden short circuit occurs during the use of the transformer, not only will the transformer be damaged and burned, but also other circuit components will be damaged.
From the analysis of the cause of the short-circuit fault of the transformer, the most important reason is the damage of the enameled wire of the transformer coil, which causes the sudden short-circuit of the transformer.
The enameled wire in the prior art is usually coated with a layer of insulating varnish on the outside of the wire, and the thickness of the insulating varnish is 0.02-0.06mm. During the winding process of the transformer coil, due to improper operation, the enameled wire is prone to peeling, damage, or long After a long time of use, the insulation performance of the enameled wire is reduced, which eventually causes a sudden short circuit, thereby reducing the performance and service life of the product

Method used

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  • Polyester composite double-insulating enamelled wire for transformer

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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 As shown, the polyester composite double-insulated enameled wire for a transformer includes a copper wire conductor 1, the outside of the copper wire conductor 1 is coated with a layer of insulating varnish 2, and the outside of the insulating varnish 2 is provided with a PET polyester film 3; wherein, The thickness of the PET polyester film 3 is 0.03-1mm. In this embodiment, the copper wire conductor coated with insulating varnish is covered by PET polyester film. Since PET polyester film has high temperature resistance, good voltage resistance and insulation performance, and is thinner, it can make the short circuit resistance of enameled wire Strong ability, effectively improve the service life of the product. The transformer made of polyester composite double-insulated enameled wire has effectively solved the technical problem of...

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Abstract

The invention relates to the technical field of enamelled wires for transformers, in particular to a polyester composite double-insulating enamelled wire for a transformer. The polyester composite double-insulating enamelled wire for the transformer comprises a copper wire conductor, wherein a layer of insulating paint is coated on the copper wire conductor, and a polyethylene terephthalate (PET) polyester film is arranged outside the insulating paint. By adopting the structure, the enamelled wire has polyester composite double-insulating performance and can resist 180-200 DEG C of high temperature, accordingly the insulating performance and the short-circuit capacity are effectively improved, decrustation and damage phenomena of the enamelled wire are avoided in the wire winding process, and the using performance and the service life of the enamelled wire are improved and prolonged. In addition, the polyester composite double-insulating enamelled wire has the advantages of being reasonable in design, simple in structure, low in cost and the like and can be applied to a small power transformer winding with voltage lower than 315kVA and applied in the electrical field of motors with high requirements of high-temperature resistance and the like.

Description

technical field [0001] The invention relates to the technical field of enameled wires for transformers, in particular to polyester composite double-insulated enameled wires for transformers. Background technique [0002] At present, in the field of transformer technology, people are eager to solve the problem of sudden short circuit. If a sudden short circuit occurs during the use of the transformer, it will not only cause damage and burnout of the transformer, but also damage other circuit components. From the analysis of the cause of the transformer short circuit fault, the most important reason is the damage of the enameled wire of the transformer coil, which causes the sudden short circuit of the transformer. The enameled wire in the prior art is usually coated with a layer of insulating varnish on the outside of the wire, and the thickness of the insulating varnish is 0.02-0.06mm. During the winding process of the transformer coil, due to improper operation, the enamel...

Claims

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Application Information

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IPC IPC(8): H01B7/02H01B7/29H01F27/28
Inventor 杨立稳
Owner JIANGSU YAWEI TRANSFORMER
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