C6F12O has excellent insulation performance, is environmentally safe, and has suitable phase change latent heat, making it a potential medium for phase change cooling technology research. However, the phase change cooling technology using C6F12O is still in its early stages, requiring preliminary exploratory work. Based on this, the complex coupling effect of electric, flow, thermal, and phase fields within the equipment during the actual operation of electrical equipment are analyzed by this paper and a full-scale simulation model is constructed by the paper. The study investigates the effects of electric field direction and electric field strength on bubble movement during the boiling of C6F12O medium under a uniform electric field, obtaining typical characteristic parameters of bubble movement. Simulation results show that bubble movement can be effectively promoted when the value of BoE is between 1180.84 and 10621.28, and 295.04 and 2655.32. Compared to a horizontal electric field, a vertical electric field promotes bubble release more effectively at higher BoE values, reducing the cycle parameter from 3.89 to 2.06. The horizontal electric field is more likely to encourage the construction of bubble channels, which may lead to a decrease in insulation performance in the resulting gas phase regions.