... power,unbalanced load.3DSP+CPLD full digital control,efficiency>97%. Active Harmonic Filter 25AHigh efficiency Three level topology, reduce power components ... , users can be aware of more information and set the system.ReliableChips, Semiconductors, Capacitors are from Germany, USA and Japan.Can ... protection, internal short circuit protection and so on. . 415V/25A Active Harmonic Filter