The potential of thermoanalysis techniques in testing winding treatment materials

Recent trends in the electrical industry have posed a problem in rating the performance properties of differing types of winding treatment materials. A technical program directed to the development of 100% reactive polyesters for insulating applications made this quite apparent. Thus, the study under discussion represents an attempt to establish a relatively fast but reliable screening technique to rate thermal stability, one of the prime requisites of insulating materials. More specifically, it is an approach to a method which would rate the comparative thermal stability of 100% reactive polyesters and relate this to the stability of solution varnishes with their considerable performance background in the area of electrical insulation.