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Liebert PSI Series *EOL*
Liebert® PSI by Vertiv is a feature-rich UPS system with industry leading 0.9 power factor. Its high power output delivers superior performance on power factor corrected (PFC) power supply and satisfactory backup time in the high demand environment. Matching external battery cabinets offer UPS backup time to several hours in the extended requirements (for Liebert® PSI-XR models only).
