Uninterruptible power system
Finalist in Emergency, On-site, Standby Power in Consulting-Specifying Engineer's 2011 Product of the Year competition
Edited by Amanda McLeman, Consulting-Specifying Engineer
Tos
hiba’s G9000 uninterruptible power systems are designed for stand-alone or parallel use in up to eight-unit configurations, without requiring a special switchgear cabinet. The double-conversion topology provides an ac/dc/ac efficiency of 97% at loads from 50% to 100%. The insulated-gate bipolar transistor (IGBT) design eliminates the need for a front-end harmonic filter and produces less than 3% input current total harmonic distortion. The product does not need an output transformer, thus improving efficiency and reducing weight, noise, and total footprint. It supports 100% unbalanced loads and 100% step-load changes without battery discharge.
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