Insulation systems in heavy duty electrical equipment

The insulation user is waiting patiently for the perfect insulation - a material that has the dielectric of synthetic films; that will withstand temperatures of mica; that is as resilient and flexible as silicone rubber; that is as tough as epoxies or polyesters. An insulation in the form of a liquid or semi-liquid with an infinite pot life, that a component can be dipped into and will air-dry in fifteen minutes and be ready for installation into a motor or generator. There is no such insulating material available today, and it is very doubtful that there will be one in the near future. However, there are materials available that will fill all of these requirements, and it is the responsibility of the design engineer to know these materials, test and evaluate these materials, and fit them into an insulating system that will do the job in a machine for a particular application for which the machine was designed. This then becomes the over-all insulation system.