*Input Voltage	Three-phase four-line system *Voltage:380±20%, phase voltage:220±20% 
*Voltage: 380±30%or phase voltage:220±30% ( Can be selected. Please specify when ordering)
Output Voltage	Phase voltage:220V Single-phase:220V Line voltage:380V
*Output Voltage accuracy	1-5%(Can be adjusted)
*Frequency:	50HZ/60HZ
*Efficiency	≥98%(Power grade is over 50KVA)
*Ambient Temperature	-10~+40℃  
*Insulation Resistance	≥5MΩ
*Electric Intensity	The voltage for electrical strength and power frequency sinusoidal is 2000V without breakdown and flicker over when it lasts 1minute.
*Overload Capacity	It can last 1 minute at twice rated current.
*Wave form Distortion	No additional waveform distortion
*Protective Function	It offers the protection against over voltage, over current, phase shortage and phase-sequence(The single-phase offers no protection against the phase shortage and phase-sequence)and mechanical failure
*Response Speed	≤1s (When the external voltage change is 10%).