Key Specifications Parameter Value Model US11R-0030 Capacity 3 kVA / 2.7 kW (power factor 0.9) UPS Type Single-phase Online / Double-conversion Input Input Voltage 220/230/240 VAC (Single phase) Input Voltage Range 120 - 288 VAC Input Frequency Range 45 - 65 Hz Input Power Factor >0.95 Input Connection IEC-320-C14 Output Output Voltage 220/230/240 VAC (Single phase, selectable) Output Voltage Regulation ±2% (Battery mode) Output Frequency 50/60 Hz ±0.2% (auto-sensing, battery mode) Output Waveform Pure Sine wave Transfer Time 0 ms (Online mode) Output Connections (4) IEC-320-C13 Crest Factor 3:1 Battery Battery Type Internal maintenance-free sealed lead-acid (VRLA) Typical Backup Time Approx. 15-20 minutes at half load (8-10 minutes at full load) Recharge Time <4 hours to 90% capacity Battery Voltage 72 VDC (6 x 12V batteries in series) System Efficiency (AC mode) Up to 89% Efficiency (ECO mode) Up to 98% Noise Level <50 dBA Physical Form Factor Rack-mount (2U height) Dimensions (W x D x H) 430 x 400 x 88 mm (16.9 x 15.7 x 3.46 in) Net Weight Approx. 28 kg (61.7 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 smart fan control Management & Communication Display Multi-function LCD with status indicators and control buttons Interface Ports USB, RS-232 Smart Slot 1 slot for optional SNMP card Software Emerson Power Insight for monitoring and shutdown Features Bypass Automatic static bypass Generator Compatibility Yes, with adjustable frequency tracking Battery Cold Start Cold start capability from battery without utility power ECO Mode Energy-saving ECO mode for non-critical loads Remote Monitoring Optional remote monitoring via SNMP card Auto Restart Automatic restart after battery discharge (configurable) Certifications Compliance CE, UL, RoHS compliant Standards IEC 62040-3 (VFI-SS-111 classification), IEC 62040-2