FIELD: diagnostics of power transformers. SUBSTANCE: at time moments $$$, where n is the number of transformer windings, the values and phases of voltages and currents of each winding are measured, and, according to the measured values, impedance $$$ and short-circuit loss Psh., current $$$ and idling loss Po are determined. The transformer technical condition and serviceability are determined according to the excess of values $$$ over the respective standard values. EFFECT: facilitated procedure. 1 dwg
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