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https://dspace.zcu.cz/items/f4cfca4c-b3b0-41c1-ac37-d80516b71a57 Selectivity of inductive coupling for partial discharge measurement in MV cables inductive couplingpartial dischargemeasurementmvcables https://en.wikipedia.org/wiki/Resonant_inductive_coupling Resonant inductive coupling - Wikipedia inductive couplingresonantwikipedia