... ,Single phase input and Single phase output UPSLong backup time Tower 15K-20K,Three phase input and Single phase ... : Over voltage, Short circuit, Unbalanced loadsWave Form: Sine WaveTransfer Time: 0ms Battery Type: Lead Acid BatteryOutput Frequency: 50Hz/60HzCertification: ... LED load indicators allow IT professionals to manage backup time and balance power loads.Low Battery indicators: The low ...