Replacing a Legacy Variable Frequency Drive: What to Check
A checklist for replacing an older variable frequency drive with an identical used spare or a current-generation model, beyond the HP or kW rating.
Harmoniques (énergie électrique)
Harmonics are currents and voltages at multiples of the supply frequency, produced by drives, rectifiers and electronic loads. Learn how THD is defined and measured.
Effet des harmoniques
Harmonics from drives and electronic loads overheat transformers, neutrals and motors, stress capacitor banks and cause nuisance trips. Here is what happens and how plants reduce...
