Glossary: W

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W

Watt: The unit of measure for true power. Watts = VA x Power Factor

Walk-In

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

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.

Watt

Unit of power. Power is the rate of using energy to do work. One watt is the power developed or dissipated in a one volt circuit in which there is a current of one ampere (6.28 million million electrons per second). Watts = amps X volts.

Watt (W)

The unit of measure for true power. Watts = VA x Power Factor

Watt-Hour

A unit of measurement quantifying an amount of energy used or generated. A load that consumes 1 watt for 10 hours uses 10 watt-hours.

Wye Connection

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