Uninterruptible power supply system

Vertiv's Liebert EXL S1 UPS reduces footprint and increases power density.

By Vertiv June 23, 2017

Vertiv introduced the high-efficiency Liebert EXL S1, a large-scale uninterruptible power supply (UPS) system with a significantly smaller physical footprint and high power density. The Liebert EXL S1 is a 60hz, UL-listed UPS available in 1000, 1100 and 1200 kVA/kW capacities. It is available in a distributed parallel configuration allowing users to parallel up to eight units for a total capacity of up to 9600 kW. The system operates at 97% efficiency in double conversion mode and 99% in economization mode, and is compatible with lithium-ion batteries. OSHA safety approved access is provided for control wiring and communication inputs and outputs. The Liebert EXL S1 is seismic certified (CBC, IBC 2015, ASCE 7-05) and has high-impedence DC ground fault detection for 2014 NEC compliance. It has a transformer-free, three-level insulated-gate bipolar transistor (IGBT) on both the rectifier and inverter. The system’s dual simultaneous communications protocols provide compatibility with multiple data center infrastructure management, IT monitoring, and building management systems.