DC Output Power: 1800W Voltage: - 40 to - 65V Current: 30Amax Phase-shift topology ( ZVS ) AC Input Voltage: 187V-253V (nominal) 154V-286V (operating) Frequency: 45-65Hz Efficiency: >88% Power factor: > > 0.99 Current T.H.D.: <5% Self diagnostic abnormal functioning Natural convection cooling design Plug & Play AC input, DC output and control signals Compact design, four modules for standard 19" rack width Protected against input fuse over current, over voltage, low voltage and surge Protected against output over voltage, over temperature, over current, current limit and short circuit Meet VDE 0871 Class A for conducted and radiated noise standard Comply with ANSI/IEEE C62.41-1991 for surge test safety standard LCD and LED operation status and warning messages display RS-485 communication interface