Range of magnet wire enamels

Citation

(2002), "Range of magnet wire enamels", Anti-Corrosion Methods and Materials, Vol. 49 No. 5. https://doi.org/10.1108/acmm.2002.12849ead.003

Range of magnet wire enamels

Range of magnet wire enamelsKeywords: Enamels, Insulators, Voltron, Coatings

At the recent Wire 2002 Exhibition, the trade fair staged every two years in Düsseldorf, Du Pont Performance Coatings (DPC) presented its complete state-of-the-art range of electrical insulation enamels. One of the highlights for the coatings company was the presentation of Voltron, introduced for the first time two years ago and since developed to meet all market requirements. The benefits claimed of the new Voltron enamels are best measured under real-life conditions: Voltron is said to considerably extend the life of inverter-fed electrical motors.

Partial discharges are a specific problem of inverter-fed motors. They damage the electrical insulation, resulting in short circuits and hence early failure of the complete unit. Voltron reportedly affords high resistance to partial discharges. Magnet wires insulated with Voltron are said to have excellent flexibility and retain their corona resistance, even when stretched. As a result, Voltron claims to extend the life of the motor by several orders of magnitude. Liquid Voltron wire enamel is described as a homogeneous resin solution, which can be applied to the wire using all standard techniques. The mechanical, chemical resistance and thermal properties are stated to be identical to conventional magnet wires.

The Voltron family is available for application to all sizes of wire from fine to heavy round to rectangular and can be applied by all methods including felts, rollers or dies. Given that Voltron claims to extend the useful life of electrical components, it may also be used for applications other than inverter-fed motors in the future.

Magnet wire windings are at the core of any electrical motor, generator or transformer. The successful insulation of the individual electrical conductors using superior wire enamels is a crucial factor in the performance and long-term reliability of the complete system.

The electrical industry continuously develops ever more compact and higher performing machines and components requiring continuously increased thermal resistivity. High speed winding techniques for the production of motors, coils and transformers require magnet wires with superior mechanical characteristics.

For more than 60 years, Du Pont Electro has been at the forefront of the development of wire enamels, which are tailor-made to the requirements of the electrical industry. Du Pont Herberts Electro is a specialist supplier of liquid insulating materials such as wire enamels, impregnating resins and core sheet varnishes. These complement the Du Pont range of solid insulating materials such as Mylar, Nomex and Kapton. Customers, therefore, can obtain the complete range of electrical insulation products from one supplier and benefit from the international technology transfer among specialists.

Further details are available from: Du Pont Performance Coatings GmbH & Co. KG. Tel: +49 (0) 202 529 2696; Fax: +49 (0) 529 2811.