... conversion IGBT inverter isolated transformer Low frequency 220v AC Three Phase inverter 10kva 15kva 20kva 1. Features1. ... , short circuit, over temperature etc9. Cold start10. Generator compatible11. With RS232 and RS485 standard collocate,12. ... series is three phase in and out online UPS, mainly for the IT device, date center, precision Instrument, bank ,Intelligent equipment, Securities electric ...