C60 as flow electrification inhibitor in mineral insulating oil

The paper presents the concept of using C60 fullerenes as streaming electrification process inhibitor in mineral insulating oil. For the research, 20 samples of oil were prepared; one pure and 19 containing from 1 mg/l to 512 mg/l of C60. The electrification current was measured using a wireless electrometer spinning disk system for rotational speeds from 0 rpm to 400 rpm. The research revealed the C60 ability to significantly reduce the constant component of streaming electrification current in mineral transformer oil. The C60 additive causes also the significant change in flow electrification mechanism as indicated by current versus flow velocity relations.