ANIL AHUJA, P.E., Director, New Products and Services Exelon Services, Inc., Westchester, Ill.

Problems with POWER

The concept of load and source compatibility is not new. In fact, the need to provide power with steady voltage and frequency has been recognized since the inception of the electric utility industry. However, the definition of "steady" has changed over the years, with increasingly sophisticated electronic equipment that is much more susceptible to departures from steady conditions.