Glass-fiber and film wrapped all-insulated squared aluminum strand wire

Abstract

The invention provides a glass-fiber and film wrapped all-insulated squared aluminum strand wire with small overall dimension change. The glass-fiber and film wrapped all-insulated squared aluminum strand wire comprises a rectangular strand wire, an insulating layer and a glass fiber yarn wrapping layer, wherein the rectangular strand wire is formed by layered arrangement and transposition of a plurality of round aluminum wires; aluminum wire insulating films coat outer layers of the round aluminum wires; the insulating layer comprises a first insulating film layer and a second insulating film layer; the first insulating film layer coats the outer side of the rectangular strand wire; the second insulating film layer coats the outer side of the first insulating film layer; the glass fiber yarn wrapping layer coats the outer side of the second insulating film layer, and comprises a first insulating paint layer, a first glass fiber yarn layer, a second insulating paint layer, a second glass fiber yarn layer and a third insulating paint layer; the first insulating paint layer coats the outer side of the second insulating film layer; the first glass fiber yarn layer coats the outer side of the first insulating paint layer; the second insulating paint layer coats the outer side of the first glass fiber yarn layer; the second glass fiber yarn layer coats the outer side of the second insulating paint layer; the third insulating paint layer coats the outer side of the second glass fiber yarn layer; and the wrapping direction of the first glass fiber yarn layer is opposite to that of the second glass fiber yarn layer.

Description

technical field [0001] The invention relates to a fully insulated compressed square aluminum stranded wire wrapped with a glass fiber-wrapped film. Background technique [0002] At present, in the power transmission and transformation project of the State Grid, the reactor is an indispensable equipment. The reactor is used to limit and filter the power transmission line, that is, the reactor is used to reduce the short-circuit current and make the short-circuit instantaneous system The voltage remains unchanged to protect the power equipment. In addition, the harmonic circuit is formed through the reactor to filter the circuit. [0003] Reactors include dry-type air-core reactors, whose windings are composed of aluminum wires, which are usually formed by transposition of single-strand film-wrapped round aluminum wires or single mutually insulated round aluminum wires. However, in the process of producing such an aluminum wire, due to the rebound effect of the wire, stranded...

AI Technical Summary

Problems solved by technology

However, in the process of producing such aluminum wires, due to the rebound effect of the wires, stranded wires and insulating layers, the structure of the wires is relaxed, and the outer dimensions of the wires change, which increases the dimensional tolerance of the wires.

The reactor obtained by winding the winding formed by such a wire becomes louder during operation, causing pollution to the environment

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