A new approach to compatibility of magnet wire and varnish using dielectrometry

摘要

This paper presents an experimental results which show that the regular pattern of chemical aging process of insulating materials under sealed heating condition can be monitored and characterized by dielectrometry or dielectric analysis with higher degree of sensitivity, efficiency and resolution in comparision with the usual method in which the compatibility is assessed by the drooping characteristic of breakdown voltage according to UL-1446 [1]. It is also found a prediction of new prospect that may be feasible to accelerate the aging test of an insulation system associated with functional factors by dielectrometry.