Looking Where It Counts

摘要

When Most People Think Of The Source And Effects of power quality problems, they think of voltage interruptions, harmonics, transients, sags, swells and even flicker, all of which are phenomena that occur on the alternating current (AC) voltage system. In fact, harmonics and flicker can only be calculated on AC systems, but problems aren't unique to AC. Most electronic equipment today runs internally on direct current (DC) voltage, and some new programs have the goal of powering the entire data center from DC.