Yueqing Sandi Electric Co.,Ltd is one of the leading China voltage converters manufacturers,Website:http://www.cnsandi.com, welcome to wholesale cheap voltage converters from our professional factory. Technical Parameters  Model SDT-5KW 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) 22.7A AC Output Rated AC output power 5KW   AC output waveform Pure sine wave   Phases Three phase, 4 wires   Output rated voltage 380VAC ±3%   Output voltage range 380/400/415/440/480Vac optional   Output Frequency 50Hz/60Hz±0.05Hz   Output rated current(A) 7.58A (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 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