High-withstand voltage rectangular wires are effective in motors with a higher design voltage than that of existing motors, and are applicable to drive motors for electric and hybrid vehicles. They have been invented as wires that will help to miniaturize such drive motors.
As shown in the diagram, the wire is composed of a rectangular conductor, an enamel layer and an extruded resin layer.
Relationship between film thickness and electric characteristics
- Conventional enamel wires were subject to limitations on coat thickness due to baking coating process quality. The insulation film thickness was not able to exceed around 50 micrometers.
- This product incorporates a highly heat-resistant enamel wire as a base, over which an extruded resin layer is formed so as to provide a high degree of flexibility to the insulating layer. It supports a high dielectric breakdown voltage according to requirements.
- It is suitable for the automotive drive motors from which a high level of insulation performance and reliability is required.
Features and advantages
- Advanced insulation characteristics open the way for application to high voltage drive purposes. By omitting the inter-layer insulation paper, they contribute to the shortening of the process and the downsizing of equipment.
- A rectangular shape means a high space fill. It leads to enhanced efficiency and reduced weight.
- A highly heat-resistant enamel layer provides the wires with excellent heat resistance and reliability.
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