Nigerian Journal of Technology

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A Comparison of Performances of Electronic and Electromechanical Energy Meters

JA Enokela


The Ferraris (electromechanical) energy meter has had predominance in the metering of energy consumption using the alternating current supply system. Electronic energy meters are gaining popularity because of the possibility of remote reading and controllable non uniform rate of billing. In this work, an electronic energy meter which does not use a multiplier circuit but uses a voltage to frequency converter with frequency to voltage converter in the feedback loop was designed and built. The performances of this electronic meter were compared with those of the Ferraris meter. It is shown that at light loads, the errors of the electromechanical meter are greater than those of the electronic meter.

AJOL African Journals Online