The Vertiv (formerly Emerson/Liebert) 600 kVA UPS is part of Vertiv’s high‑capacity, three‑phase critical power portfolio, designed specifically for large-scale enterprise, data center, and industrial applications. Models rated around 600 kVA include the Liebert EXL S1, the Liebert NX, and the Liebert APM2 series—each offering robust online double‑conversion architecture, transformer‑free designs, and exceptional operational efficiency of up to ~97–99% depending on configuration and load conditions Key highlights across these platforms: Liebert EXL S1 (250–600 kVA): Monolithic, high‑power density UPS with transformer‑free topology, unity power factor output, scalable paralleling, fast servicing access, and remote diagnostics via Vertiv LIFE services Liebert NX (225–600 kVA): Modular, soft‑scalable from 225 to full 600 kVA without expanding footprint; unity output power factor, intelligent eco‑mode for up to ~98% efficiency, touchscreen control and remote monitoring via Life.net Liebert APM2 (300–600 kVA): Modular row‑based system using Flex Power technology with IGBT-based three‑level converter topology; achieves up to ~97.5% base, rising to 98.8% in dynamic eco‑mode, with efficient cooling and parallel operation support