Key Specifications Parameter Value Series Liebert EXL S1 Capacity 500 kVA / 500 kW (unity power factor) UPS Type Three-phase Online / Double-conversion Input Input Voltage 380/400/415 VAC (3-phase, 3-wire + ground or 4-wire) Input Voltage Range 300 - 520 VAC (full performance, adjustable) Input Frequency 45 - 66 Hz Input Power Factor >0.99 Input THDI <2.5% (with internal filter) Output Output Voltage 380/400/415 VAC (3-phase, 4-wire + ground, adjustable) Output Voltage Regulation ±1% (Static load) / ±3% (Dynamic load) Output Frequency 50/60 Hz ±0.1% (Battery mode) Output Waveform Pure Sine wave Overload Capacity 110% for 60 minutes / 125% for 10 minutes / 150% for 60 seconds Crest Factor 3:1 System Efficiency (AC mode) Up to 97.5% (Double-conversion) / Up to 99% (ECO mode) Parallel Capability Up to 8 units in parallel for redundancy or capacity (up to 4 MW) Topology Transformer-free with three-level IGBT technology Redundancy N+1, N+X configurations supported Battery Battery Type VRLA, lithium-ion, NiCd compatible Battery Voltage Configurable: 480-576 VDC (optimized for lithium-ion) Battery Management Advanced battery monitoring, temperature compensation, automatic testing, cell-level monitoring Charger High-capacity intelligent charger with temperature compensation Physical Form Factor Floor-standing modular cabinet Dimensions (W x D x H) 2000 x 1050 x 2000 mm (78.7 x 41.3 x 78.7 in) typical Net Weight Approx. 2200 kg (4850 lbs) depending on configuration Protection Rating IP20 (standard) / IP21 or higher optional Environment Operating Temperature 0°C to +40°C (32°F to 104°F) Storage Temperature -25°C to +55°C (-13°F to 131°F) Operating Humidity 0% to 95% (non-condensing) Altitude Up to 1000m without derating / Derated above 1000m Cooling Forced air ventilation with redundant, variable speed fans Management & Communication Display 10-inch multi-language graphical color touchscreen Interface Ports RS-232, RS-485, USB, Ethernet (standard) Communication Protocols SNMP, Modbus RTU, Modbus TCP/IP, BACnet IP, BACnet MS/TP, Profibus Communication Slots Multiple expansion slots for additional communication cards Software Vertiv Power Insight, Trellis DCIM integration, Liebert Nform Features Bypass Static bypass switch with manual maintenance bypass Generator Compatibility Advanced generator interface with soft start Energy Storage Optimized for lithium-ion with cell-level monitoring Remote Monitoring Cloud-based monitoring capability Cybersecurity Enhanced cybersecurity features for network-connected environments Serviceability Front-access design for reduced footprint and easier maintenance Certifications Compliance CE, UL, IEC, RoHS, ISO 9001 Standards IEC 62040-3, IEC 62040-2, IEC 62443 (cybersecurity)