Magnet Wire Insulation Systems

Approximately eighty percent of all electrical failures begin as copper-to-copper faults. We recognize that manufacturing excellent coils starts during the planning stage. Customer needs and requirements are identified, and coil designs are optimized to deliver the industry's most reliable windings.

At CMI, our inventory of high-grade quad film magnet wire is the result of strong supplier relationships that enable us to incorporate the best turn-and-strand insulation materials for all our projects. The outcome is a reliable coil system with optimal surge protection.

‍The CMI Turn and Strand Insulation Process‍

In applications where film-coated magnet wire is appropriate, we use only the best materials in the industry. A quad film-coated magnet wire is our standard whenever possible, delivering a breakdown voltage of almost twice that of heavy film.

For machines with higher operating turn-to-turn stress, a history of transient surge occurrences, or application duty that inflicts severe mechanical stress on the winding, film-coated magnet wire may not be sufficient. In these situations, CMI uses a combination of quad-film-coated magnet wire reinforced with either one or two layers of fused dacron-glass yarn.

CMI specializes in producing reliable coils for the most severe of applications. When either one or two layers of mica turn tape is required, there is no substitute for experienced personnel equipped with state-of-the-art machinery. Our custom-built turn-taping machinery works with the looping machine to minimize production time while maintaining constant tension and optimal lapping.

Rigorous turn-and-strand insulation selection is the foundation of quality winding. Our versatile and rugged ground insulation systems build on this foundation to deliver maximum uptime by enhancing surge protection and optimizing operating conditions.