TY JOUR TI Development of Stationary Device for Diagnostics of Low-Maintenance Grounding System of Catenary Poles Being on Alternating Current KW Low-maintenance system KW grounding system KW diagnostics and monitoring KW alternating current KW catenary pole JO Proceedings of Petersburg Transport University AU Agunov, A.V. AU Terehin, I.A. AU Lavruhin, D.D. AU Baranov, I.A. PY 2022 IS 19 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"