Power shedding device
US5534734A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1993 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Dec 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S20/248
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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. P…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.