W

Walk-In-Time The time that the rectifier takes to reach rated output current after the Start Up Delay. The slope is fixed so that a lower output current will have a shorter walk in period.

Walk-In The process of gradually ramping up rectifier output voltage (and current) at start up to prevent a large input current surge.

Watt (W) The unit of measure for true power. Watts = VA x Power Factor

Wye Connection A three-phase source of load connection, with a single common junction and three phase lines out or in