Importance

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Abstract

A power shedding device controls the application of power from an uninterruptible power supply (UPS). It includes circuitry for detecting an alarm signal indicative of a condition requiring the rationing of power from the UPS, and a plurality of power outlets for connection to a plurality of loads such as computers, printers, and other associated devices. A microprocessor controls the application of power to each power outlet pursuant to program control such that the application of power to a first power output is independent of the application of power to a second power output. Manually operable switches are provides for presetting shedding profiles for the power outlets during a shutdown procedure. The processor is responsive to receipt of an alarm signal to shed each power output in accordance with its corresponding manually preset shedding profile. A low UPS battery alarm results in an override of the shedding profiles if the remaining time to shutdown for an outlet exceeds a predetermined limit. The processor is responsive to alarms from the UPS as well as to an auxiliary alarm. The power shedding device may be used with existing UPS monitoring software without modification. Power outlets are also manually selectable or deselectable by the user if desired. In addition provision is made for power recycling of all power outlets regardless of when power returns.

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First Claim