Abstract:
The principle of operation, implementation and performance of a three phase, programmable,
multi-rate ,electronic energy meter is discussed in this dissertation. In this design, the accuracy is
increased by the use of a current shunt instead of a current transformer for current measurement.
Built in counters of a programmable logic controller (PLC) record the energy consumption during
the peak and non-peak hours. The power required for the PLC is taken directly from mains while
that for the integrated circuits is taken through a capacitor divider circuit. The PLC that has a
built in real time clock provides flexibility to the meter since it is easily programmable.
