... bypass 4. UPS, ECO, EPS Mode Three Phase Double Conversion AC power uninterruptible power supplies (UPS) 1.Brief ... repairingLow noise generationSmall volumeLong life expectancyMCU control for reduction of components and simplified control circuitsImproved reliability ... Production Range: UPS, three phase (10kva~800kva), single phase(300va~20kva), three phase in and single phase out(6kva~80kva), online ...