UPS images
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
Three UPS Types
All UPS systems switch to battery when the power fails. The difference is how they handle the power under normal circumstances. Standby units provide limited attenuation whereas line interactive systems will adjust the voltage and smooth out bad harmonics. Online systems are constantly regenerating clean power. (Diagrams courtesy of MGE UPS SYSTEMS.)
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
Size Does Matter
When the power goes off, the unit on the right will keep more equipment running for a longer time than the one on the left, because the battery is larger. Battery size is an important criterion when selecting UPS systems.
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
Backing Up the Backup
In APC's Symmetra Power Array, all modules share in the total load; thus, any unit can fail and be replaced without jeopardizing the security the UPS was intended to provide in the first place. (Image courtesy of American Power Conversion Corporation.)
Computer Desktop Encyclopedia THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.Copyright © 1981-2010 by Computer Language Company Inc. All rights reserved.
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