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Insulated wire and coil using the same

A technology of insulating wires and insulating resins, which is used in insulated cables, insulators, insulated conductors, etc.

Inactive Publication Date: 2014-03-26
HITACHI METALS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in motors, transformers, etc., electromagnetic vibrations and mechanical vibrations are applied during operation, and due to these vibrations, the accumulated inorganic materials are peeled off from the surface of the insulating layer, and the effect of suppressing the erosion of the insulating layer may not be sufficiently obtained.
Therefore, there is a limit to suppressing erosion of the insulating layer caused by partial discharge only by filling the insulating layer with an inorganic material or the like.

Method used

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  • Insulated wire and coil using the same
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  • Insulated wire and coil using the same

Examples

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Effect test

Embodiment approach

[0033] Hereinafter, embodiments of the insulated wire and the coil using the same according to the present invention will be specifically described with reference to the drawings.

[0034] (insulated wire)

[0035] Figure 1A It is a sectional view showing the first embodiment of the insulated electric wire of the present invention. like Figure 1A As shown, the insulated electric wire of the present embodiment is configured to include: a conductor 1; and a first resin layer 2 formed on the outer periphery of the conductor 1 and containing inorganic fine particles and unreacted organometallics in an insulating resin.

[0036] In addition, the "unreacted state" refers to a state in which the organometallics are present in a state not reacted with the resin or the inorganic fine particles in the resin layer, and can react with the inorganic fine particles when the organometallics are exposed or the like.

[0037] in addition, Figure 1B It is a cross-sectional view showing a s...

Embodiment 1）

[0068] Disperse organic silica sol (benzyl alcohol / naphtha-based mixed Dispersion medium, the average particle size of silica is 12nm), so that the silica component of the silicone sol becomes 20 parts by mass with respect to 100 parts by mass of the resin component of the coating material, and the organometallic (Matsumoto Seiki Co., Ltd.) is further mixed in an unreacted state Matsu moto Fine Chemical Co., Ltd. (manufactured by Matsu moto Fine Chemical Co., Ltd., trade name: ORGATIX TC-750), thus obtained coating for insulated wires (coating for partial discharge-resistant polyesterimide enameled wire), using the obtained The paint is applied on the copper conductor and fired to form the first resin layer to obtain an insulated wire with a one-layer structure (the film thickness of the insulating layer is 30 μm).

Embodiment 2～3）

[0070] In Example 1, the organosilicon sol as inorganic microparticles was dispersed so that the silicon dioxide component of the organosilicon sol became 5 parts by mass and 100 parts by mass respectively with respect to 100 parts by mass of the above-mentioned resin component. Example 1 was carried out in the same manner.

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Abstract

The present invention provides an insulated wire with voltage endurance remarkably increased by improving partial discharge resistance, as well as a coil using the insulated wire. The insulated wire includes a conductor (1), and a first resin layer (2) formed on an outer periphery of the conductor (1), wherein the first resin layer includes an insulating resin including inorganic fine particles and an unreacted organic metal.

Description

technical field [0001] The present invention relates to an insulated electric wire and a coil using the insulated electric wire. More specifically, it relates to an insulated wire used in electrical equipment such as a motor, and a coil using the insulated wire. Background technique [0002] In electrical equipment with a high applicable voltage, such as a motor used under high voltage, a high voltage is applied to the insulated wires constituting the electrical equipment. When there is a small gap between adjacent insulated wires or in the insulating layer, the In some parts, the electric field is concentrated, and partial discharge is prone to occur. Deterioration of the insulating layer due to such partial discharge causes insulation breakdown to occur early, and there is a problem that the life of the electrical equipment is shortened. Therefore, as an insulated wire constituting a coil of a motor or the like used at a high voltage, the insulating layer covering the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B3/30
CPCH01B3/308H01F27/2823H02K3/30Y10T428/294Y10T428/2947Y10T428/2924H01B7/0225H01B7/02H01B7/0216
Inventor 菊池英行花轮秀仁锅岛秀太本田祐树荒井才志
Owner HITACHI METALS LTD
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