... and output isolation transformer, EPO & ECO, manual maintenance bypassFeatures:Three phase in and out system, compatible with utility of 380/400 ... +N+PEPower factor>0.99Input cuurent THD(Total Harmonic Distortion)<3%Input voltage window+20%~-20%, full load-20%~-40%, ... strengh(input,output to PE)2820Vdc, leakage current lower than 3.5mA, no flashover in 1 minuteSurge protectionComply with IEC60664- ...