Yueqing Sandi Electric Co.,Ltd is one of the leading China ac converters manufacturers,Website:http://www.cnsandi.com, welcome to wholesale cheap ac converters from our professional factory. Technical Parameters Model SDT-20KW Isolation Low Frequency Transformer AC Input Input rated voltage(VAC) Single phase 220V Input voltage range 110/120/220/230/240Vac optional Input rated current(A) 90.9A AC Output Rated AC output power 20KW AC output waveform Pure sine wave Phases Three phase, 4 wires Output rated voltage 380VAC±3% Output voltage range 220/240/380/400/415/440/480Vac optional Output Frequency 50Hz/60Hz±0.05Hz Output rated current(A) 30.35A (per phase) Power Factor(PF) 0.95 Overload Ability 150%, 10s Efficiency >94% Waveform distortion rate (THD) <3%(Linear load) Crest Factor (CF) 3:1 Display LCD Electrical insulation properties 2500Vac, 1 Minute Ambient temperature -15~+55℃ Using environment humidity 0~90%,No condensation Protection Input under voltage, overvoltage, output over-current, short circuit, overheating etc. Structure Cooling method Fan-cooled Noise <40dB Degree of protection IP20(indoor) Using altitude(m) ≤3000 Dimensions (mm) 600x700x1200mm Weight (Kg) 185Kg CE Standard EN60950-1:2006+A11:2009, EN61000-6-4:2007+A1:2001, EN61000-6-2:2005, EN61000-3-12:2005, EN61000-3-11:2000