Interview with Dr Jelena Lukić, CEO of the Nikola Tesla Institute, for Electrical Oil Services: elemental sulphur in synthetic ester fluids

Electrical Oil Services (EOS) has published an interview with Dr. Jelena Lukić, CEO of the Nikola Tesla Institute of Electrical Engineering. The topic is elemental sulphur in synthetic ester insulating fluids. Dr Lukić has convened two CIGRE working groups, one on copper corrosion and one on silver corrosion.

Even low concentrations of elemental sulphur can lead to silver sulphide forming on silver-plated contacts inside a transformer, which is especially relevant for on-load tap changers. Reliable quantification below 1 ppm remains a challenge, and international work is under way on more sensitive test methods.

The Institute offers a comprehensive approach to this challenge, from testing and risk assessment to mitigation and remedial actions. Its patented TeslaSorb® technology has been validated with two OEMs in on-site treatments. The first commercial delivery covered 50 tonnes of recycled, non-corrosive ester, and further scale-up is planned through a partnership with EOS.

Read the full interview: https://www.electricaloilservices.com/blog/elemental-sulphur-in-synthetic-esters-what-does-research-say