Variable Output Solid State Frequency Converter allows adjustment of output voltage and frequency over wide range. Models available from 500W to 60KVA at Single Phase output and 3KVA to 150KVA at three phase output. Accepts input frequencies from 47-63Hz, (optional 400Hz input), and most standard input voltages. Produces output voltages from 1.0VAC to 300VAC L-N (0-346V L-N optional) at both single phase and three phase. Includes overload, short circuit, over/under voltage, temperature and surge protection. The unit comes with LED digital display for output voltage, frequency and Current.