Abstract
It has been understood that the deterioration of electrical properties was caused by the amount of dissolved water in liquid dielectrics. Moreover, it is believed that such dissolved water molecules diffuse into free space in liquid dielectrics uniformly, because the behavior of water molecule can not be observed by Karlfisher's method, though only the amount of water has been observed. But recently, by using FT-IR method, it is published that the almost dissolved water molecules behave as binding water bound by the polar bases of dielectrics. The binding force was caused by hydrogen bonds between the water and dielectric molecules. In this paper, the relation between the conductivity and the binding force is considered by calculating the hydrogen bonding energy among the molecules. As the result, it is seen that the conductivity of hydrated dielectrics can be determined by the strength of hydrogen bonding energy and the amount of water, and experimental equation for conductivity is derived from this relations.
