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This paper analyses the feasibility of Flywheel UPS systems as a replacement for the existing Battery Based UPS systems within the IT infrastructure. Although it warrants further analysis, this paper does not address backing up other critical branch loads or the critical branch in its entirety. This effort will be completed as part of the Kaiser Template Hospital project. The flywheel UPS system is less costly in both initial capital and ongoing maintenance expense. The flywheel system uses less space and generates less heat than comparable sized battery operated system. However, the flywheel system will only provide power for about thirty seconds after a failure of the normal power source.
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