TCI’s harmonic filters keep harmonics from variable frequency drives away from a plant’s electrical grid.
By Russ Gager
The variable frequency drive has been a boon to manufacturing plants, wastewater treatment plants and other industrial users. For example, a wastewater plant’s pump motors used to run at a single speed dictated by the frequency of the electrical power they received. That necessitated use of a choke valve to slow the flow of water to the desired level. Now pumps have variable speed drives and can slow or speed up their motors to achieve the correct flow or pressure.