In the USA roughly 50% of the total electrical energy generated is consumed by AC Inductive motor equipment. VFD control panels are available in a wide variety of power ratings, and are used across large-scale industrial applications like pumping, drilling and to control other heavy-duty equipment such as elevators, rock crushing machines, and water & sewer treatment plants and water conservation for agricultural systems. A VFD control panel typically houses a selection of control panel components including a VFD, harmonic filters, line reactors, surge protectors, a bypass, circuit breakers, motor starters, soft starters and some kind of cooling unit, as VFD’s tend to produce a lot of heat. The most common NEMA ratings for VFD control panel enclosures are NEMA 12, NEMA 3R, and NEMA 4x. A VFD Control System consist on an AC control panel housing the VFD and any associated motor control or circuit protection devices in an enclosure, protecting them from electrical shocks, fires, moisture, corrosion, dust, and other conditions. VFD Control System Basics What is a VFD Control System?Ī VFD, short for variable frequency drive, is a type of a motor control electrical device for starting and controlling an AC inductive motor and its speed with varying frequency (Hz) and voltage.
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