谐波滤波器适合于含有3相6脉整流装置电源端的高次谐波电流（特征波5th、7th、11th、13th）的治理，

例如变频器、整流电源等,以达到相关标准要求（IEEE519，IEC61000-3-12，GB17625）

Harmonic filter is widely used in 3-phase 6 pulse rectifying device such as inverter,

DC power etc.Reduce  higher harmonics to meet the standards IEEE519 or IEC61000-3-12 or GB17625.