When designing dense 120V power distribution systems, it's important to take into consideration harmonics and their resulting voltage drop and I 2 R heating effects, which can affect step-down ...
The S-PRO 4000 relay provides real-time processing of voltage and current signals with sub-harmonic monitoring at 1 Hz intervals between 5 Hz and 25 Hz (5 Hz, 6 Hz, 7 Hz… 23 Hz, 24 Hz and 25 Hz).