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Overview:

Traditionally, data center managers and facilities managers could choose from three UPS topologies: standby, line-interactive and double-conversion—offering widely varying levels of efficiency, performance and protection.

The latest generation of double-conversion UPSs offers unique multi-mode capabilities. The UPS operates in a very high-efficiency mode unless power conditions warrant a switch to the higher protective level typical of double-conversion mode.

This white paper describes how various UPS topologies work and looks at the impact of operating mode on five key factors of UPS performance: • Maintaining voltage within tolerances • Transferring among modes without locking up IT equipment • Transitioning gracefully to and from generator power • Reliability and availability • Energy efficiency

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Format:PDF
Date:Sep 2009

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