FIELD: electric measurement technology. SUBSTANCE: current pickup has current transformer incorporating ferromagnetic core that carries primary and secondary windings, amplifier, recording instrument, n short-circuited windings, where n n≥ 1 1. EFFECT: improved noise immunity of pickup in case of random noise initiating emf that causes current flow in short-circuited winding where electromagnetic field opposing main field is built up. 1 dwg
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