DEVICE FOR VERIFICATION OF ELECTRICITY METERING BY INDUCTION ELECTRICITY METERS Russian patent published in 2015 - IPC G01R11/24 

FIELD: electricity.

SUBSTANCE: device for verification of electricity metering by induction electricity meters consists of in-series assembly of pulse power diode and electrolytic capacitor with active loaded permitting operation at direct current connected in parallel to the capacitor, at that the assembly is placed downstream the verified electric meter. Capacitance value C of the electrolytic capacitor is calculated as per the formula C≈T/2η(1+η)R, where T is alternating current cycle in the mains provided that ratio of charge time η to discharge time of the electrolytic capacitor is many times less than one, for example of about 0.01, where R is active resistance of the load connected in parallel to the electrolytic capacitor and the pulse power diode should be rated for pulse current of I_PULSE≈2I_R/η, where I_R is rated current in the load with resistance R.

EFFECT: simplified design of the device for verification of electricity metering by induction electricity meters in comparison with the known devices intended for the same purpose at operation with active loads permitting operation at direct current.

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