FIELD: electrical engineering. SUBSTANCE: liquid metal contact for current pick-off includes mobile and immobile parts separated with gap filled with metallic liquid. Metallic liquid is injected with component electrically negative with reference to basic components of liquid and free surface of metallic liquid is covered with layer of electrolyte presenting solution of mineral salt of injected component in mixture of water and high-molecular organic fluid. EFFECT: increased operational reliability. 4 cl, 1 dwg
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