Key Specifications Parameter Value Series Liebert NXR Capacity 120 kVA / 120 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 304 - 456 VAC (full performance) / 228 - 304 VAC (derated) Input Frequency 45 - 65 Hz Input Power Factor >0.99 Input THDI <3% (with internal filter) Output Output Voltage 380/400/415 VAC (3-phase, 4-wire + ground, adjustable) Output Voltage Regulation ±1% (Static load) Output Frequency 50/60 Hz ±0.1% (Battery mode, auto-sensing) 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 96% (Double-conversion) / Up to 99% (ECO mode) Parallel Capability Up to 4 units in parallel for redundancy or capacity (up to 480 kVA) Topology Transformer-free with three-level IGBT technology Redundancy N+1, N+X configurations supported Battery Battery Type External VRLA, lithium-ion, or NiCd compatible Battery Voltage 480 VDC (typical, 40 x 12V batteries in series) Battery Management Advanced ABM technology, temperature compensation, automatic testing Charger High-capacity intelligent charger with temperature compensation Physical Form Factor Floor-standing cabinet Dimensions (W x D x H) 600 x 850 x 1600 mm (23.6 x 33.5 x 63.0 in) Net Weight Approx. 310 kg (683 lbs) Protection Rating IP20 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 variable speed fans Management & Communication Display Multi-language graphical LCD with status indicators Interface Ports RS-232, RS-485, USB, dry contacts Communication Slots Multiple slots for optional SNMP, Modbus, BACnet, or relay cards Software Vertiv Power Insight, Liebert Nform, DCIM/BMS integration Features Bypass Static bypass switch with manual maintenance bypass Generator Compatibility Advanced generator interface with frequency tracking Battery Cold Start Cold start capability from battery ECO Mode Energy-saving ECO mode for non-critical loads Remote Monitoring Optional remote monitoring via SNMP or cloud Serviceability Front-access design for easy maintenance Certifications Compliance CE, UL, IEC, RoHS compliant Standards IEC 62040-3 (VFI-SS-111 classification), IEC 62040-2