1)STC Three Phase Alternator 2)New desigh,Competitive price 3)Short delivery time 4)Best workmanship.. STC Three Phase Alternator1.Widely used in ... and adopt harmonic excitation system, easy operation and maintenance.3. three-phase, four-wire type, adopted star connection with neutral point ... . The rated line voltage is 380V,phase voltage 220V,frequency 50Hz, power factor 0.8(lag). ...