Operating Voltage Range 380/400/415Vac (－25%/＋20% ), (3Ph＋PE), Operating Frequency Range 50/60Hz (±5%,Power Factor ≥0.97 *, Output Voltage 380/400/415Vac (±1%), (3Ph+N+PE), Output frequency 50/60Hz (±0.05%), Battery Voltage 384Vdc (360~384Vdc ), Overload Load≤110%/60min; ≤125%/10mins; ≤150%/1 min, to Bypass, built-in galvanic isolation transformer, Efficiency up to 94%, Anti-corosive PCB, Multi Protection: Self Diagnosis function, AC input under/over voltage, overload, short circuit, over-current, over bus voltage, over temperature, fan failure, auxiliary power failure, battery under voltage, battery over charge etc.