| Feature Security of high credibility and realization of large power control by adopting the next generation semiconducting device, IGBT Operation and manipulation are convenient to any users by the measurement due to 7 segments FND and display panel describing the action state using LED. Excellent response characteristic guarantees the great stability and reliability against the overloaded transfer, transient response and synchronized transfer. Especially, it has the outstanding sine wave characteristic to the rectification type load such as SMPS. On-line system consistently supplies the constant-voltage and constan-frequecy(CVCF)power. It has the function of thorough protect against the various power supply noise introduced from the input power source. The supply of true sine wave due to high frequency (20kHz)real-time PWM control method.No-break transfer is realized such that in-rush current or noise are removed in case of fransfer by synchronized transfer part adopting pure semiconductor. Low noise, small size and light weight (inverter switch has the frequency of 20kHz which exceeds audible range). Protection of overload at each step(120% - after 10sec, 150% - immediately, 300% - inverter return lock after transfer.) Interference of the electromagnetic waves due to the load or nearby equipments is eliminated by installing built-in EMI filters at input, output and switching parts.(Even at the bypass supply, EMI filter strengthens the power supply noise protect at the output). Built-in alarm function at the power outage (Built-in automatic battery recharging function at the power recovery).IGBT-insulated gate bipolar transistor | 
