1-20KVA PL3 Series High Frequency Online UPS 1KVA/2KVA/3KVA/6KVA/10KVA/15KVA/20KVA module, 208/220/230/240 VAC, 1:1 PL3 series power supply adopts online double conversion design and digital control technology and it features high input and output power factor, self-adaptive output frequency according to input frequency,intelligent battery management and excellent network management.