FIELD: operational control of indices of quality of electric energy in power and weak-current networks. SUBSTANCE: proposed gear provides for control over coefficient of nth harmonic component of voltage, coefficient of distortion of sinusoidal signal and coefficient of voltage asymmetry by reverse and zero sequences. Gear incorporates switch, analog-to-digital converter, signal processor, computer and peripheral devices. EFFECT: increased number of parameters measured in real time. 3 dwg
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