Vertiv Liebert EXL S1 1200kVA UPS

The Vertiv Liebert EXL S1 1200kVA represents the pinnacle of utility-scale uninterruptible power protection, engineered specifically for hyperscale data centers, large enterprise colocation facilities, and the rapidly expanding AI/ML training cluster market. Built around a true online double-conversion architecture with an integrated IGBT-based active front end, the system achieves a best-in-class efficiency of up to 99% in ECO mode and maintains 97% or higher even in full double-conversion mode, dramatically reducing heat load and operational energy expenditure across multi-megawatt deployments. The modular internal design allows incremental capacity scaling in significant kVA steps without system shutdown, enabling facilities to precisely match installed UPS capacity to actual IT load growth rather than over-provisioning from day one.

At 1200kVA/1200kW (unity power factor output), the EXL S1 is purpose-built to serve as the backbone of critical power infrastructure where a single UPS frame must protect entire rows of high-density GPU compute racks, large-scale storage arrays, or entire power distribution zones. The system supports a wide input voltage range and accepts non-linear loads typical of modern switch-mode power supplies without deration, making it directly compatible with the dense, power-hungry server configurations found in AI inference and training environments. An advanced battery management system extends battery service life through intelligent charge control, cell monitoring, and predictive replacement scheduling, while lithium-ion battery compatibility offers reduced footprint and improved cycle endurance compared to traditional VRLA options.

The EXL S1 integrates deeply with Vertiv's Environet and Liebert IntelliSlot communication ecosystem, enabling real-time SNMP, Modbus TCP, BACnet, and native DCIM integration for unified power monitoring across the entire critical infrastructure stack. Its transformerless topology reduces system weight and physical footprint compared to legacy transformer-based equivalents, a significant advantage in high-density build-outs where floor loading and white-space efficiency are paramount. Designed for N+1 and 2N parallel redundancy configurations, up to eight units can be paralleled to deliver protection capacity exceeding 9.6MW within a single logical UPS system, making the EXL S1 one of the most scalable single-frame UPS platforms available for next-generation AI data center construction.

Ideal for

• Hyperscale AI training clusters requiring sustained multi-megawatt power protection for dense GPU server aisles with near-zero efficiency penalty
• Colocation data center critical power zones demanding paralleled N+1 or 2N redundancy at scale with unified DCIM-integrated monitoring
• Large enterprise owned data centers undergoing power infrastructure modernization from legacy transformer-based UPS systems to high-efficiency transformerless architecture
• High-performance computing (HPC) facilities running continuous simulation workloads where input power quality and zero-transfer-time failover are non-negotiable
• Edge hyperscale nodes and large regional data centers adopting lithium-ion battery technology to reduce battery footprint and extend maintenance intervals
• Financial services and healthcare tier-IV data centers requiring paralleled megawatt-class UPS redundancy to meet stringent uptime and regulatory compliance mandates

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.