Behavior of transformer mineral oil mixtures submitted to isothermal charging currents

Effect of electrodes material on transient currents in dielectric liquid

“…For constituting the different metal/dielectric liquid interfaces, the studied oil is associated with different sets of metal electrodes (stainless steel, aluminium and brass). The liquid is a naphthenic mineral oil (technically called Borak22); its principal characteristics are given in [32]. The main properties of the electrode materials are given in Table 1, their front face is of circular geometry with a planar area of 12.5 cm 2 (Fig.…”