Polyester composite double-insulating enamelled wire for transformer

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...

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

Images