Study of anode-liquid interface in transformer oil under high DC non uniform field

It is evident from experimental studies that the anode-liquid interface played an important role on conduction current vis time and field as well as breakdown probabily. The influence was shown on i-E characteristics which modify Nikuradse´ ideal characteristic. The experimental data deals with insulating film, space charge, and charge carrier formed due to anode-liquid interface under influence of high DC non-uniform field. Analysis of the nature of this insulating film and space charge reaction will be presented.