Delta PQC series power quality solution consists of the Active Power Filter (APF) which provide an active compensation solution based on power electronics technology. Compared with conventional passive compensation solutions such as capacitor banks, an active compensation solution improves the reliability and quality of the power distribution system. The Power Module eliminate 2nd–50th harmonics (selectable). Steplessly compensate both inductive and capacitive reactive power. Also available Fast, can track dynamic harmonic & reactive loads (<0.1ms). Active compensation technology avoids harmonic resonance from the principle. Actual output capacity is the same as rated capacity.