LED online UPS 6-20kva True online double conversion technology IGBT PFC technology. Wide input range. Zero transfer time. 6-20KVA LED Online UPS, CPU control ,IGBT , High Reliability Comprehensive Self-Protection Design, Audible AlarmHT series online UPS 6-20kVA characteristics:1. True online double conversion technology2. IGBT PFC technology.3. Wide input range.4. Zero transfer time.5. Compete ...