Dissipation factor an in process tool for magnet wire coating applications

The inherent properties (chemical, physical, thermal and electrical) of magnet wire enamels depend to a great extent on the degree of cure these enamels undergo during tower application. In the past, relatively simple tests such as solvent resistance and flexibility existed to determine the parameters of application versus degree of curing. These tests, being of short duration, allowed little copper scrap to generate during start up of production equipment. Today a host of new complex polymers are being applied as magnet wire coatings. The markets they are serving are more complex and demanding and require a greater degree of sophistication in establishing an optimum degree of cure. Existing tests that define these qualities are quite often refined and time consuming. Due to these factors and higher material application costs in today´s magnet wire industry, increasing emphasis is being placed on application knowledge. A definite need exists to control enamelling conditions and subsequently insure that satisfactory enamelled magnet wire is being produced at all times.