*Full intelligent electronic: single chip controlled, full digital control and high reliability; *Non-contact:Non-brush and machinery wearing, it can work more than 100,000 hours and continues operation 11 years; *High precision:The percentage of output reaches 1%; *High efficiency:above Load efficiency reaches 99%; *Three-phase automatic balance and rapid adjustment; *Non-lack fidelity in wave distortion, no harmonious interfere; *Rapid response and speed:«3 weeks «0.06 seconds *Safety:Over Voltage, under voltage, over current, lacking phase, bypass and over current protection. *Strong protection:With advanced design and strong capacity in equipment protection; Specifications: No.