FIELD: electric measurement technology; electricity meters. SUBSTANCE: meter serviceability is estimated by difference in reactive and active power and danger of phase shift between current and voltage in supply mains. Device has set of supply mains phase current and voltage transformers. active and reactive power sensors, unit for measuring phase shift between supply mains current and voltage, computer, main and read-only storage units, calendar clock, meter-to-regional-information-system communication system. EFFECT: provision for serviceability check of electricity meter. 3 cl, 1 dwg
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