The AS3U series features an AS3 adjustable speed drive with an integrated passive harmonic filter in a UL® Type 1 free‑standing enclosure. This factory-integrated solution significantly reduces upstream harmonic distortion and simplifies installation by eliminating the need for external filters.
By limiting total harmonic current distortion to 5% or less at full load, the AS3U helps support overall system compliance with IEEE
519 standards. In addition, its integrated approach reduces system footprint, wiring complexity, and commissioning time.