User’s Manual WM3M4 &WM3M4C
5.3.6 Energy counters
Two different variants of displaying Energy counters are available:
by individual counter,
by tariffs for each counter separately.
5.3.7 Harmonic distortion
The WM3M4 & WM3M4C energy meters calculate THD for phase currents and phase voltages and are
expressed as percent of high harmonic components regarding to fundamental harmonic.
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