Online UPS Rated Capacity: 50KVA Power Factor: PF=0.8 Input Voltage: 380Vac+/-20% Input Frequency: 50Hz+/-5% Output Voltage: 380Vac+/-1% Output Frequency: 50Hz+/-0.3% Wave Form: Output sine wave Dynamic load voltage transient: <+/-4% Harmonic Distortion: <3%(linear load), <5%(nonlinear load) Crest Factor: 3:1 External Batteries: 12Vdc*32pcs=384Vdc Transfer Time: Zero Overload Ability: 100% - 125% load, 10minutes; 125%-150% load, 30second Noise dB(at one meter): 53dB-65dB Display: LED - Mains input/ by pass/ inverter/battery /over load/ fault LCD - Input / Output / battery voltage / frequency / load rate / UPS condition / Temperature Interface Communication: RS-232 Temperature: 0 - 40 Celsius Degree Humidity: 205 - 90% without condensation Weight: 690kg ProductSize: 1000mm*660mm*1450mm Low frequency online technology Online double conversion design Microprocessor control Static by pass Sine wave output and zero transfer time Central and friendly control panel LED & LCD double display 100% unbalance protection design Perfect protection Adaptable with generator DC start function Remote control management (RS-232)