Multi-layer insulated electrical wire

Abstract

The invention discloses a multi-layer insulating wire which is formed by a conductor and at least two insulating layers which coats the conductor; it uses heat plasticity with fluorine to form the insulating layers; any two adjacent layers are formed by the heat plasticity with different fluorine so as to form inter-strip insulating layers.

Description

technical field [0001] The invention relates to a multi-layer insulated wire, in particular to a multi-layer insulated wire that meets safety standards. Background technique [0002] The structure of the transformer has the following provisions for the coil in the IEC (International Electrotechnical Communication Standard) standard 60950: [0003] 1. At least three insulating layers must be formed between the primary coil and the secondary coil (but the paint film covering the conductor is not considered an insulating layer) or the thickness of the insulating layer must be more than 0.44mm. [0004] 2. The distance between the primary coil and the secondary coil surface must be kept at least 5mm, although it varies according to the applied voltage. [0005] 3. When a voltage of 3000 volts (v) is applied to the side of the primary coil and the secondary coil, it must be able to withstand more than 1 minute. [0006] For this reason, most of the current transformers are insu...

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Problems solved by technology

[0003] 1. At least three insulating layers must be formed between the primary coil and the secondary coil (but the paint film covering the conductor is not considered an insulating layer) or the thickness of the insulating layer must be more than 0.44mm

[0004] 2. The distance between the primary coil and the secondary coil surface, although it varies according to the applied voltage, must be kept above 5mm

[0007] However, in the method of the above-mentioned prior art, when the insulating tape is wound, the problem of cumbersome work will occur. In addition, if the insulating tape is broken or the quality is not good, it will inevitably cause things such as poor insulation effect or electric shock, and the production Slow speed, high manufacturing cost, and consuming human resources, the above problems have become urgent problems to be solved

[0008] Therefore, a proposal to use a three-layer wire as a multi-layer insulated wire that meets safety standards is proposed, as described in US Patent No. Polyamide resin (PA resin) and other materials are made of three-layer insulating layers that meet safety regulations, but these materials have a low temperature resistance level, are easy to support combustion, and produce toxic gases. If used in transformer coils, they are prone to damage due to high temperature. cause poor insulation

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