Exeltech’s XP series power inverters provide the cleanest, best regulated sine wave output over the widest DC input of any inverter on the market today. They are extremely low in Total Distortion; specified to 2%, and typically better than 1.5%. Total Harmonic Distortion is typically 0.8% to 0.9%. Remaining distortion is a result of residual switching noise,which amounts to a very clean 25 KHZ sine wave superimposed on the fundamental output. No significant harmonics of 25 KHZ exist. This spectral purity will exist over the inverter’s entire operating envelope, including non-linear and reactive loads. As long as peak output current remains less than 300% of rated current, total harmonic distortion will remain within the 2% specification. Peak current capability of the inverter is key to understanding its operational envelope. As long as the inverter is supplying less than this amount, it will function properly and operate virtually any load.