Liebert® EXL S1 is a monolithic product that features a transformer-free design with a full IGBT three-level topology, providing extraordinary features including a double conversion efficiency of up to 97% plus intelligent paralleling to optimize efficiency at partial load, thus achieving superior running cost savings. Dynamic Online mode enables operating efficiency up to 99% without sacrificing availability. Furthermore, its higher power density in a minimum footprint optimizes the availability of IT space and reduces related costs. This product is approved by the ETL (Energy Technology List) for UK customers. Under the Enhanced Capital Allowance (ECA) scheme, ETL listed products can claim back 100% first year capital allowance.