Double Conversion Online UPS with Large LCD Display Model: High Frequency Online UPS Queen Star Series 1-20 Kva (1ph in / 1ph out) (3ph in / 1ph out) Key Features: 1)True online double conversion technology, Pure Sine Wave Output 2)N + X Redundantcy Parallel Function for UPS 6-20Kva capacity 3)Automatic battery charging on/ off mode 4)Equipped with maintenance bypass switch 5)Active input power factor correction (PFC) 6)Protection against Overload, overcharge, high voltage, low votage, short circuit, power surges, power sags, brownouts etc 7)DSP & IGBT Technology, compact design 8)Active Load Management, cold start function 9)Sufficient Expansion Slots for USB,AS400,CMC monitoring,SNMP,RS485 and EMD environmen monitoring 10)External SNMP ,CMC or Dry contacts (optional) 11)Available to work with generators 12)220Vac / 230Vac / 240Vac or 380Vac / 400Vac / 415Vac Input, 220Vac / 230Vac / 240Vac output, 50/60Hz 13)Sealed lead acid, maintenance free battery Applications; Data center, Industrial equipment, Financial and Securities, Large Data rooms, Postal and Telecommunications,Micro Processor Based Office Machines, Energy and Electricity, Industrial and Commercial tax affair,Control Equipment,railway stations, airports and seaports etc.