Three-phase off-grid inverter has the function of segmented charging and discharging,working without batery underspecial conditions.lithium batery activation function, which can be triggered by mains or solar.4 charging modes: SolarOnly, Mains Priority, Solar Priority and Solar&Mains hybrid charging.2 output modes: mains bypass and inverter outputwith UPS function.Adopting fulldigital double closed loop control, combined with advanced SPWM.Advanced MPPTtechnology with efficiency of 99.9%.LCD screen and three LED lights can clearly indicate the status and data.intelligentand variable-speed fan, eficiently dissipate heat and extend system life.Multiple safety protection functions: short circuitprotection, overoad protection, reverse polarity protection and so on.