Technical Features of GK600 series Power input Rated voltage 3-phase AC220V/AC230V/AC380V/AC400V/AC415V/AC440V/AC460V/AC480V 1-phase AC220V/AC230V Rated input current See Section 2.3 in user manual Frequency 50Hz/60Hz, acceptable fluctuation range ¡¨¤5% Allowable range of voltage Continuous voltage fluctuation ¡¨¤10%, short fluctuation -15%~+10%, i.e. 323V~528V; Voltage out-of-balance rate