In order to evaluate the insulation of two-phase immersion cooling in the HV power electronic package. the insulation degradation of the dielectric interface induced by bubbles is investigated. In this paper. a test strategy with 50 Hz unipolar DC and AC combined voltage for partial discharge (PD) at boiling interface of AIN ceramic is proposed. https://www.jmannino.com/super-save-NFL-Chicago-Bears-Blast-iPhone-14-Plus-Skin-p41373-big-savings/