FIELD: check of content of acetylene in closed and open spaces, as well as in vapor of transformer oil which is indicative of defects in high-voltage transformers. SUBSTANCE: used as working electrode is porous carbon matrix with chemical nickel applied over entire volume. Powder-like nickel oxide is used as comparison electrode and proton-conducting solid electrolyte is used as electrolyte. EFFECT: enhanced efficiency; low cost. 2 dwg
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