Variable Frequency Drive (VFD) Panels use in AC motor speed control applications. VFD Panels control motor speed by changing the motor input frequency . VFD Panel control the consumption of electricity in AC motors to reduce cost. They find application wherever there are AC motors. Like centrifugal pumps, compressor units, and fans used. Hence variable frequency drives often seen in paper mills and metal rolling. Extrusion plants, tube mills, and cable drawing processes. Other industries include pharmaceuticals, chemicals, cement, steel, rubber, automotive and heavy electrical unites.