... and support.Specifications Input voltageThree-phases,four-line,phase voltage:170-270V,line phase:304-450V Output voltageThree phases: 380VOutput deviance1- 5 ... current ,one minWaveform distortionNon-lack fidelity waveformProtectOvervoltage ,overcurrent,feed phasesGeneralThis series large power voltage stabilizer is an energy-saving new product ...